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pjs/layout/base/nsCSSFrameConstructor.cpp

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520 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// vim:cindent:ts=2:et:sw=2:
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dan Rosen <dr@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsCSSFrameConstructor.h"
#include "nsCRT.h"
#include "nsIAtom.h"
#include "nsIURL.h"
#include "nsISupportsArray.h"
#include "nsHashtable.h"
#include "nsIHTMLContent.h"
#include "nsIHTMLDocument.h"
#include "nsIStyleRule.h"
#include "nsIFrame.h"
#include "nsHTMLAtoms.h"
#include "nsIPresContext.h"
#include "nsILinkHandler.h"
#include "nsIDocument.h"
#include "nsTableFrame.h"
#include "nsTableColGroupFrame.h"
#include "nsTableColFrame.h"
#include "nsIDOMHTMLDocument.h"
#include "nsIDOMHTMLTableColElement.h"
#include "nsIDOMHTMLTableCaptionElem.h"
#include "nsTableCellFrame.h" // to get IS_CELL_FRAME
#include "nsIStyleFrameConstruction.h"
#include "nsHTMLParts.h"
#include "nsIPresShell.h"
#include "nsIStyleSet.h"
#include "nsIViewManager.h"
#include "nsIScrollableView.h"
#include "nsStyleConsts.h"
#include "nsTableOuterFrame.h"
#include "nsIDOMXULElement.h"
#include "nsIWebShell.h"
#include "nsHTMLContainerFrame.h"
#include "nsINameSpaceManager.h"
#include "nsLayoutAtoms.h"
#include "nsIDOMHTMLSelectElement.h"
#include "nsIDOMHTMLLegendElement.h"
#include "nsIComboboxControlFrame.h"
#include "nsIListControlFrame.h"
#include "nsISelectControlFrame.h"
#include "nsIRadioControlFrame.h"
#include "nsICheckboxControlFrame.h"
#include "nsIDOMCharacterData.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsITextContent.h"
#include "nsPlaceholderFrame.h"
#include "nsTableRowGroupFrame.h"
#include "nsStyleChangeList.h"
#include "nsIFormControl.h"
#include "nsCSSAnonBoxes.h"
#include "nsCSSPseudoElements.h"
#include "nsIDeviceContext.h"
#include "nsTextFragment.h"
#include "nsISupportsArray.h"
#include "nsIAnonymousContentCreator.h"
#include "nsIFrameManager.h"
#include "nsIAttributeContent.h"
#include "nsIPrefBranch.h"
#include "nsIPrefService.h"
#include "nsLegendFrame.h"
#include "nsIContentIterator.h"
#include "nsBoxLayoutState.h"
#include "nsIBindingManager.h"
#include "nsIXBLBinding.h"
#include "nsIElementFactory.h"
#include "nsITheme.h"
#include "nsContentCID.h"
#include "nsIDocShell.h"
#include "nsFormControlHelper.h"
#include "nsObjectFrame.h"
#include "nsRuleNode.h"
#include "nsIPrintPreviewContext.h"
#include "nsIDOMMutationEvent.h"
#include "nsChildIterator.h"
#include "nsCSSRendering.h"
#include "nsISelectElement.h"
#include "nsLayoutErrors.h"
#include "nsLayoutUtils.h"
#include "nsAutoPtr.h"
#include "nsScrollPortFrame.h"
#include "nsXULAtoms.h"
#include "nsBoxFrame.h"
static NS_DEFINE_CID(kTextNodeCID, NS_TEXTNODE_CID);
static NS_DEFINE_CID(kHTMLElementFactoryCID, NS_HTML_ELEMENT_FACTORY_CID);
static NS_DEFINE_CID(kAttributeContentCID, NS_ATTRIBUTECONTENT_CID);
#include "nsIDOMWindowInternal.h"
#include "nsPIDOMWindow.h"
#include "nsIMenuFrame.h"
#include "nsBox.h"
#ifdef MOZ_XUL
#include "nsIRootBox.h"
#include "nsIDOMXULCommandDispatcher.h"
#include "nsIDOMXULDocument.h"
#include "nsIXULDocument.h"
#endif
#include "nsInlineFrame.h"
#include "nsBlockFrame.h"
#include "nsIScrollableFrame.h"
#include "nsIXBLService.h"
#include "nsIStyleRuleSupplier.h"
#undef NOISY_FIRST_LETTER
#ifdef MOZ_MATHML
#include "nsMathMLAtoms.h"
#include "nsMathMLParts.h"
#endif
#ifdef MOZ_SVG
#include "nsSVGAtoms.h"
#include "nsISVGAttribute.h"
#include "nsISVGValue.h"
#include "nsISVGStyleValue.h"
nsresult
NS_NewSVGOuterSVGFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGPolylineFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGPolygonFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGCircleFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGEllipseFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGLineFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGRectFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGGFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGGenericContainerFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGForeignObjectFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
nsresult
NS_NewSVGPathFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsIFrame** aNewFrame);
#endif
#include "nsIDocument.h"
#include "nsIDOMElement.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentXBL.h"
#include "nsIScrollable.h"
#include "nsINodeInfo.h"
#include "prenv.h"
#include "nsWidgetsCID.h"
// Global object maintenance
nsIXBLService * nsCSSFrameConstructor::gXBLService = nsnull;
#ifdef DEBUG
// Set the environment variable GECKO_FRAMECTOR_DEBUG_FLAGS to one or
// more of the following flags (comma separated) for handy debug
// output.
static PRBool gNoisyContentUpdates = PR_FALSE;
static PRBool gReallyNoisyContentUpdates = PR_FALSE;
static PRBool gNoisyInlineConstruction = PR_FALSE;
static PRBool gVerifyFastFindFrame = PR_FALSE;
struct FrameCtorDebugFlags {
char* name;
PRBool* on;
};
static FrameCtorDebugFlags gFlags[] = {
{ "content-updates", &gNoisyContentUpdates },
{ "really-noisy-content-updates", &gReallyNoisyContentUpdates },
{ "noisy-inline", &gNoisyInlineConstruction },
{ "fast-find-frame", &gVerifyFastFindFrame },
};
#define NUM_DEBUG_FLAGS (sizeof(gFlags) / sizeof(gFlags[0]))
#endif
#ifdef MOZ_XUL
#include "nsMenuFrame.h"
#include "nsPopupSetFrame.h"
#include "nsTreeColFrame.h"
#include "nsIBoxObject.h"
#include "nsIListBoxObject.h"
#include "nsListBoxBodyFrame.h"
#include "nsListItemFrame.h"
//------------------------------------------------------------------
nsresult
NS_NewAutoRepeatBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewRootBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewDocElementBoxFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewThumbFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewDeckFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIBoxLayout* aLayoutManager = nsnull);
nsresult
NS_NewSpringFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewStackFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIBoxLayout* aLayoutManager = nsnull);
nsresult
NS_NewProgressMeterFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewImageBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTextBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewGroupBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewButtonBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewGrippyFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewSplitterFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewMenuPopupFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewPopupSetFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewScrollBoxFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewMenuFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRUint32 aFlags );
nsresult
NS_NewMenuBarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewListBoxScrollPortFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTreeBodyFrame (nsIPresShell* aPresShell, nsIFrame** aNewFrame);
// grid
nsresult
NS_NewGridLayout2 ( nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout );
nsresult
NS_NewGridRowLeafLayout ( nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout );
nsresult
NS_NewGridRowLeafFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot, nsIBoxLayout* aLayout);
nsresult
NS_NewGridRowGroupLayout ( nsIPresShell* aPresShell, nsIBoxLayout** aNewLayout );
nsresult
NS_NewGridRowGroupFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot, nsIBoxLayout* aLayout);
nsresult
NS_NewListBoxLayout ( nsIPresShell* aPresShell, nsCOMPtr<nsIBoxLayout>& aNewLayout );
// end grid
nsresult
NS_NewTitleBarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame);
nsresult
NS_NewResizerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame);
#endif
nsresult
NS_NewScrollPortFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewGfxScrollFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIDocument* aDocument, PRBool aIsRoot);
nsresult
NS_NewSliderFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarButtonFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewNativeScrollbarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
#ifdef NOISY_FINDFRAME
static PRInt32 FFWC_totalCount=0;
static PRInt32 FFWC_doLoop=0;
static PRInt32 FFWC_doSibling=0;
static PRInt32 FFWC_recursions=0;
static PRInt32 FFWC_nextInFlows=0;
static PRInt32 FFWC_slowSearchForText=0;
#endif
//----------------------------------------------------------------------
//
// When inline frames get weird and have block frames in them, we
// annotate them to help us respond to incremental content changes
// more easily.
static inline PRBool
IsFrameSpecial(nsIFrame* aFrame)
{
return (aFrame->GetStateBits() & NS_FRAME_IS_SPECIAL) != 0;
}
static void
GetSpecialSibling(nsIFrameManager* aFrameManager, nsIFrame* aFrame, nsIFrame** aResult)
{
// We only store the "special sibling" annotation with the first
// frame in the flow. Walk back to find that frame now.
aFrame = aFrame->GetFirstInFlow();
void* value;
aFrameManager->GetFrameProperty(aFrame, nsLayoutAtoms::IBSplitSpecialSibling, 0, &value);
*aResult = NS_STATIC_CAST(nsIFrame*, value);
}
static nsIFrame*
GetLastSpecialSibling(nsIFrameManager* aFrameManager, nsIFrame* aFrame)
{
for (nsIFrame *frame = aFrame, *next; ; frame = next) {
GetSpecialSibling(aFrameManager, frame, &next);
if (!next)
return frame;
}
NS_NOTREACHED("unreachable code");
return nsnull;
}
// Get the frame's next-in-flow, or, if it doesn't have one,
// its special sibling.
static nsIFrame*
GetNifOrSpecialSibling(nsIFrameManager *aFrameManager, nsIFrame *aFrame)
{
nsIFrame *result;
aFrame->GetNextInFlow(&result);
if (result)
return result;
if (IsFrameSpecial(aFrame))
GetSpecialSibling(aFrameManager, aFrame, &result);
return result;
}
static void
SetFrameIsSpecial(nsIFrameManager* aFrameManager, nsIFrame* aFrame, nsIFrame* aSpecialSibling)
{
NS_PRECONDITION(aFrameManager && aFrame, "bad args!");
// Mark the frame and all of its siblings as "special".
for (nsIFrame* frame = aFrame; frame != nsnull; frame->GetNextInFlow(&frame)) {
frame->AddStateBits(NS_FRAME_IS_SPECIAL);
}
if (aSpecialSibling) {
#ifdef DEBUG
// We should be the first-in-flow
nsIFrame* prev;
aFrame->GetPrevInFlow(&prev);
NS_ASSERTION(! prev, "assigning special sibling to other than first-in-flow!");
#endif
// Store the "special sibling" (if we were given one) with the
// first frame in the flow.
aFrameManager->SetFrameProperty(aFrame,
nsLayoutAtoms::IBSplitSpecialSibling,
aSpecialSibling, nsnull);
}
}
static nsIFrame*
GetIBContainingBlockFor(nsIFrame* aFrame)
{
NS_PRECONDITION(IsFrameSpecial(aFrame),
"GetIBContainingBlockFor() should only be called on known IB frames");
// Get the first "normal" ancestor of the target frame.
nsIFrame* parentFrame;
do {
parentFrame = aFrame->GetParent();
if (! parentFrame) {
NS_ERROR("no unsplit block frame in IB hierarchy");
return aFrame;
}
if (!IsFrameSpecial(parentFrame))
break;
aFrame = parentFrame;
} while (1);
// post-conditions
NS_ASSERTION(parentFrame, "no normal ancestor found for special frame in GetIBContainingBlockFor");
NS_ASSERTION(parentFrame != aFrame, "parentFrame is actually the child frame - bogus reslt");
return parentFrame;
}
//----------------------------------------------------------------------
// XXX this predicate and its cousins need to migrated to a single
// place in layout - something in nsStyleDisplay maybe?
static PRBool
IsInlineFrame(nsIFrame* aFrame)
{
// XXXwaterson why don't we use |! display->IsBlockLevel()| here?
switch (aFrame->GetStyleDisplay()->mDisplay) {
case NS_STYLE_DISPLAY_INLINE:
case NS_STYLE_DISPLAY_INLINE_BLOCK:
case NS_STYLE_DISPLAY_INLINE_TABLE:
case NS_STYLE_DISPLAY_INLINE_BOX:
case NS_STYLE_DISPLAY_INLINE_GRID:
case NS_STYLE_DISPLAY_INLINE_STACK:
case NS_STYLE_DISPLAY_DECK:
case NS_STYLE_DISPLAY_POPUP:
case NS_STYLE_DISPLAY_GROUPBOX:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
// NeedSpecialFrameReframe uses this until we decide what to do about IsInlineFrame() above
static PRBool
IsInlineFrame2(nsIFrame* aFrame)
{
return !aFrame->GetStyleDisplay()->IsBlockLevel();
}
//----------------------------------------------------------------------
// Block/inline frame construction logic. We maintain a few invariants here:
//
// 1. Block frames contain block and inline frames.
//
// 2. Inline frames only contain inline frames. If an inline parent has a block
// child then the block child is migrated upward until it lands in a block
// parent (the inline frames containing block is where it will end up).
// XXX consolidate these things
static PRBool
IsBlockFrame(nsIPresContext* aPresContext, nsIFrame* aFrame)
{
// XXXwaterson this seems wrong; see IsInlineFrame() immediately
// above, which will treat inline-block (e.g.) as an inline. Why
// don't we use display->IsBlockLevel() here?
const nsStyleDisplay* display = aFrame->GetStyleDisplay();
return NS_STYLE_DISPLAY_INLINE != display->mDisplay;
}
static nsIFrame*
FindFirstBlock(nsIPresContext* aPresContext, nsIFrame* aKid, nsIFrame** aPrevKid)
{
nsIFrame* prevKid = nsnull;
while (aKid) {
if (IsBlockFrame(aPresContext, aKid)) {
*aPrevKid = prevKid;
return aKid;
}
prevKid = aKid;
aKid = aKid->GetNextSibling();
}
*aPrevKid = nsnull;
return nsnull;
}
static nsIFrame*
FindLastBlock(nsIPresContext* aPresContext, nsIFrame* aKid)
{
nsIFrame* lastBlock = nsnull;
while (aKid) {
if (IsBlockFrame(aPresContext, aKid)) {
lastBlock = aKid;
}
aKid = aKid->GetNextSibling();
}
return lastBlock;
}
/*
* Unlike the special (next) sibling, the special previous sibling
* property points only from the anonymous block to the original
* inline that preceded it. DO NOT CHANGE THAT -- the
* GetParentStyleContextFrame code depends on it! It is useful for
* finding the "special parent" of a frame (i.e., a frame from which a
* good parent style context can be obtained), one looks at the
* special previous sibling annotation of the real parent of the frame
* (if the real parent has NS_FRAME_IS_SPECIAL).
*/
inline void
MarkIBSpecialPrevSibling(nsIPresContext* aPresContext,
nsIFrameManager *aFrameManager,
nsIFrame *aAnonymousFrame,
nsIFrame *aSpecialParent)
{
aFrameManager->SetFrameProperty(aAnonymousFrame,
nsLayoutAtoms::IBSplitSpecialPrevSibling,
aSpecialParent,
nsnull);
}
// -----------------------------------------------------------
// Structure used when constructing formatting object trees.
struct nsFrameItems {
nsIFrame* childList;
nsIFrame* lastChild;
nsFrameItems(nsIFrame* aFrame = nsnull);
// Appends the frame to the end of the list
void AddChild(nsIFrame* aChild);
};
nsFrameItems::nsFrameItems(nsIFrame* aFrame)
: childList(aFrame), lastChild(aFrame)
{
}
void
nsFrameItems::AddChild(nsIFrame* aChild)
{
if (childList == nsnull) {
childList = lastChild = aChild;
}
else
{
lastChild->SetNextSibling(aChild);
lastChild = aChild;
}
// if aChild has siblings, lastChild needs to be the last one
for (nsIFrame* sib = lastChild->GetNextSibling(); sib;
sib = sib->GetNextSibling()) {
lastChild = sib;
}
}
// -----------------------------------------------------------
// Structure used when constructing formatting object trees. Contains
// state information needed for absolutely positioned elements
struct nsAbsoluteItems : nsFrameItems {
// containing block for absolutely positioned elements
nsIFrame* containingBlock;
nsAbsoluteItems(nsIFrame* aContainingBlock = nsnull);
// Appends the frame to the end of the list
void AddChild(nsIFrame* aChild);
};
nsAbsoluteItems::nsAbsoluteItems(nsIFrame* aContainingBlock)
: containingBlock(aContainingBlock)
{
}
// Additional behavior is that it sets the frame's NS_FRAME_OUT_OF_FLOW flag
void
nsAbsoluteItems::AddChild(nsIFrame* aChild)
{
aChild->AddStateBits(NS_FRAME_OUT_OF_FLOW);
nsFrameItems::AddChild(aChild);
}
// Structures used to record the creation of pseudo table frames where
// the content belongs to some ancestor.
struct nsPseudoFrameData {
nsIFrame* mFrame;
nsFrameItems mChildList;
nsFrameItems mChildList2;
nsPseudoFrameData();
nsPseudoFrameData(nsPseudoFrameData& aOther);
void Reset();
};
struct nsPseudoFrames {
nsPseudoFrameData mTableOuter;
nsPseudoFrameData mTableInner;
nsPseudoFrameData mRowGroup;
nsPseudoFrameData mColGroup;
nsPseudoFrameData mRow;
nsPseudoFrameData mCellOuter;
nsPseudoFrameData mCellInner;
// the frame type of the most descendant pseudo frame, no AddRef
nsIAtom* mLowestType;
nsPseudoFrames();
nsPseudoFrames& operator=(const nsPseudoFrames& aOther);
void Reset(nsPseudoFrames* aSave = nsnull);
PRBool IsEmpty() { return (!mLowestType && !mColGroup.mFrame); }
};
nsPseudoFrameData::nsPseudoFrameData()
: mFrame(nsnull), mChildList(), mChildList2()
{}
nsPseudoFrameData::nsPseudoFrameData(nsPseudoFrameData& aOther)
: mFrame(aOther.mFrame), mChildList(aOther.mChildList),
mChildList2(aOther.mChildList2)
{}
void
nsPseudoFrameData::Reset()
{
mFrame = nsnull;
mChildList.childList = mChildList.lastChild = nsnull;
mChildList2.childList = mChildList2.lastChild = nsnull;
}
nsPseudoFrames::nsPseudoFrames()
: mTableOuter(), mTableInner(), mRowGroup(), mColGroup(),
mRow(), mCellOuter(), mCellInner(), mLowestType(nsnull)
{}
nsPseudoFrames& nsPseudoFrames::operator=(const nsPseudoFrames& aOther)
{
mTableOuter = aOther.mTableOuter;
mTableInner = aOther.mTableInner;
mColGroup = aOther.mColGroup;
mRowGroup = aOther.mRowGroup;
mRow = aOther.mRow;
mCellOuter = aOther.mCellOuter;
mCellInner = aOther.mCellInner;
mLowestType = aOther.mLowestType;
return *this;
}
void
nsPseudoFrames::Reset(nsPseudoFrames* aSave)
{
if (aSave) {
*aSave = *this;
}
mTableOuter.Reset();
mTableInner.Reset();
mColGroup.Reset();
mRowGroup.Reset();
mRow.Reset();
mCellOuter.Reset();
mCellInner.Reset();
mLowestType = nsnull;
}
// -----------------------------------------------------------
// Structure for saving the existing state when pushing/poping containing
// blocks. The destructor restores the state to its previous state
class nsFrameConstructorSaveState {
public:
nsFrameConstructorSaveState();
~nsFrameConstructorSaveState();
private:
nsAbsoluteItems* mItems; // pointer to struct whose data we save/restore
PRBool* mFirstLetterStyle;
PRBool* mFirstLineStyle;
nsAbsoluteItems mSavedItems; // copy of original data
PRBool mSavedFirstLetterStyle;
PRBool mSavedFirstLineStyle;
friend class nsFrameConstructorState;
};
// Structure used for maintaining state information during the
// frame construction process
class nsFrameConstructorState {
public:
nsCOMPtr<nsIPresShell> mPresShell;
nsCOMPtr<nsIFrameManager> mFrameManager;
// Containing block information for out-of-flow frammes
nsAbsoluteItems mFixedItems;
nsAbsoluteItems mAbsoluteItems;
nsAbsoluteItems mFloatedItems;
PRBool mFirstLetterStyle;
PRBool mFirstLineStyle;
nsCOMPtr<nsILayoutHistoryState> mFrameState;
nsPseudoFrames mPseudoFrames;
// Constructor
// Use the passed-in history state.
nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloatContainingBlock,
nsILayoutHistoryState* aHistoryState);
// Get the history state from the pres context's pres shell.
nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloatContainingBlock);
// Function to push the existing absolute containing block state and
// create a new scope
void PushAbsoluteContainingBlock(nsIPresContext* aPresContext,
nsIFrame* aNewAbsoluteContainingBlock,
nsFrameConstructorSaveState& aSaveState);
// Function to push the existing float containing block state and
// create a new scope
void PushFloatContainingBlock(nsIFrame* aNewFloatContainingBlock,
nsFrameConstructorSaveState& aSaveState,
PRBool aFirstLetterStyle,
PRBool aFirstLineStyle);
};
nsFrameConstructorState::nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloatContainingBlock,
nsILayoutHistoryState* aHistoryState)
: mFixedItems(aFixedContainingBlock),
mAbsoluteItems(aAbsoluteContainingBlock),
mFloatedItems(aFloatContainingBlock),
mFirstLetterStyle(PR_FALSE),
mFirstLineStyle(PR_FALSE),
mFrameState(aHistoryState),
mPseudoFrames()
{
aPresContext->GetShell(getter_AddRefs(mPresShell));
mPresShell->GetFrameManager(getter_AddRefs(mFrameManager));
}
nsFrameConstructorState::nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloatContainingBlock)
: mFixedItems(aFixedContainingBlock),
mAbsoluteItems(aAbsoluteContainingBlock),
mFloatedItems(aFloatContainingBlock),
mFirstLetterStyle(PR_FALSE),
mFirstLineStyle(PR_FALSE),
mPseudoFrames()
{
aPresContext->GetShell(getter_AddRefs(mPresShell));
mPresShell->GetFrameManager(getter_AddRefs(mFrameManager));
nsCOMPtr<nsISupports> container;
aPresContext->GetContainer(getter_AddRefs(container));
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (docShell)
docShell->GetLayoutHistoryState(getter_AddRefs(mFrameState));
}
// Use the first-in-flow of a positioned inline frame in galley mode as the
// containing block. We don't need to do this for a block, since blocks aren't
// continued in galley mode.
static nsIFrame*
AdjustAbsoluteContainingBlock(nsIPresContext* aPresContext,
nsIFrame* aContainingBlockIn)
{
nsIFrame* containingBlock = aContainingBlockIn;
PRBool paginated;
aPresContext->IsPaginated(&paginated);
if (!paginated) {
nsCOMPtr<nsIAtom> fType;
containingBlock->GetFrameType(getter_AddRefs(fType));
if (nsLayoutAtoms::positionedInlineFrame == fType) {
containingBlock = ((nsPositionedInlineFrame*)containingBlock)->GetFirstInFlow();
}
}
return containingBlock;
}
void
nsFrameConstructorState::PushAbsoluteContainingBlock(nsIPresContext* aPresContext,
nsIFrame* aNewAbsoluteContainingBlock,
nsFrameConstructorSaveState& aSaveState)
{
aSaveState.mItems = &mAbsoluteItems;
aSaveState.mSavedItems = mAbsoluteItems;
mAbsoluteItems =
nsAbsoluteItems(AdjustAbsoluteContainingBlock(aPresContext, aNewAbsoluteContainingBlock));
}
void
nsFrameConstructorState::PushFloatContainingBlock(nsIFrame* aNewFloatContainingBlock,
nsFrameConstructorSaveState& aSaveState,
PRBool aFirstLetterStyle,
PRBool aFirstLineStyle)
{
aSaveState.mItems = &mFloatedItems;
aSaveState.mFirstLetterStyle = &mFirstLetterStyle;
aSaveState.mFirstLineStyle = &mFirstLineStyle;
aSaveState.mSavedItems = mFloatedItems;
aSaveState.mSavedFirstLetterStyle = mFirstLetterStyle;
aSaveState.mSavedFirstLineStyle = mFirstLineStyle;
mFloatedItems = nsAbsoluteItems(aNewFloatContainingBlock);
mFirstLetterStyle = aFirstLetterStyle;
mFirstLineStyle = aFirstLineStyle;
}
nsFrameConstructorSaveState::nsFrameConstructorSaveState()
: mItems(nsnull), mFirstLetterStyle(nsnull), mFirstLineStyle(nsnull),
mSavedFirstLetterStyle(PR_FALSE), mSavedFirstLineStyle(PR_FALSE)
{
}
nsFrameConstructorSaveState::~nsFrameConstructorSaveState()
{
// Restore the state
if (mItems) {
*mItems = mSavedItems;
}
if (mFirstLetterStyle) {
*mFirstLetterStyle = mSavedFirstLetterStyle;
}
if (mFirstLineStyle) {
*mFirstLineStyle = mSavedFirstLineStyle;
}
}
static
PRBool IsBorderCollapse(nsIFrame* aFrame)
{
for (nsIFrame* frame = aFrame; frame; frame = frame->GetParent()) {
nsCOMPtr<nsIAtom> fType;
frame->GetFrameType(getter_AddRefs(fType));
if (nsLayoutAtoms::tableFrame == fType.get()) {
return ((nsTableFrame*)frame)->IsBorderCollapse();
}
}
NS_ASSERTION(PR_FALSE, "program error");
return PR_FALSE;
}
// a helper routine that automatically navigates placeholders.
static nsIFrame*
GetRealFrame(nsIFrame* aFrame)
{
nsIFrame* result = aFrame;
// We may be a placeholder. If we are, go to the real frame.
nsCOMPtr<nsIAtom> frameType;
// See if it's a placeholder frame for a float.
aFrame->GetFrameType(getter_AddRefs(frameType));
PRBool isPlaceholder = (nsLayoutAtoms::placeholderFrame == frameType.get());
if (isPlaceholder) {
// Get the out-of-flow frame that the placeholder points to.
// This is the real float that we should examine.
result = NS_STATIC_CAST(nsPlaceholderFrame*,aFrame)->GetOutOfFlowFrame();
NS_ASSERTION(result, "No out of flow frame found for placeholder!\n");
}
return result;
}
/**
* Utility method, called from MoveChildrenTo(), that recursively
* descends down the frame hierarchy looking for out-of-flow frames that
* need parent pointer adjustments to account for the containment block
* changes that could occur as the result of the reparenting done in
* MoveChildrenTo().
*/
static void
AdjustOutOfFlowFrameParentPtrs(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsFrameConstructorState* aState)
{
nsIFrame *outOfFlowFrame = GetRealFrame(aFrame);
if (outOfFlowFrame && outOfFlowFrame != aFrame) {
// Get the display data for the outOfFlowFrame so we can
// figure out if it is a float or absolutely positioned element.
const nsStyleDisplay* display = outOfFlowFrame->GetStyleDisplay();
// Update the parent pointer for outOfFlowFrame if it's
// containing block has changed as the result of reparenting,
if (NS_STYLE_POSITION_ABSOLUTE == display->mPosition) {
// XXX_kin: I think we'll need to add code here to handle the
// XXX_kin: reparenting that can happen in ConstructInline()?
// XXX_kin:
// XXX_kin: The case I'm thinking about here is when the inline being
// XXX_kin: constructed has a style="position: relative;" property
// XXX_kin: on it, and ConstructInline() moves/reparents all child block
// XXX_kin: frames and any inlines (including placeholders) that happen
// XXX_kin: to be between these blocks, under the new inline-block it created.
// XXX_kin: I think right now this case generates an assertion during
// XXX_kin: reflow, and as a result things fail to render since I believe
// XXX_kin: the placeholder is parented to the inline-block, and the
// XXX_kin: outOfFlowFrame is in the original inline frame's absolute list,
// XXX_kin: and is also parented to it.
}
else if (NS_STYLE_FLOAT_NONE != display->mFloats) {
nsIFrame *parent = aState->mFloatedItems.containingBlock;
outOfFlowFrame->SetParent(parent);
if (outOfFlowFrame->GetStateBits() &
(NS_FRAME_HAS_VIEW | NS_FRAME_HAS_CHILD_WITH_VIEW)) {
// We don't need to walk up the tree, since each level of
// recursion of the SplitToContainingBlock will propagate the
// bit.
parent->AddStateBits(NS_FRAME_HAS_CHILD_WITH_VIEW);
}
}
// XXX_kin: We'll need to remove the return below when we support
// XXX_kin: descending into out-of-flow frames. Here are some notes
// XXX_kin: from waterson:
// XXX_kin:
// XXX_kin: We'd want to continue to descend into placeholders
// XXX_kin: until we found an out-of-flow frame that established
// XXX_kin: a new containing block for absolutely positioned
// XXX_kin: elements. At that point, we could terminate the descent,
// XXX_kin: because any absolutely positioned frames below that frame
// XXX_kin: would be properly parented.
return;
}
// XXX_kin: Since we're only handling floats at the moment,
// XXX_kin: we don't need to cross block boundaries.
if (IsBlockFrame(aPresContext, aFrame))
return;
// Dive down into children to see if any of their
// placeholders need adjusting.
nsIFrame *childFrame = nsnull;
aFrame->FirstChild(aPresContext, nsnull, &childFrame);
while (childFrame)
{
// XXX_kin: Once we add support for adjusting absolutely positioned
// XXX_kin: frames, we will be crossing block boundaries, we/ll need
// XXX_kin: to update aState's containingBlock info to avoid incorrectly
// XXX_kin: reparenting floats, etc.
// XXX_kin:
// XXX_kin: Do we need to prevent descent into anonymous content here?
AdjustOutOfFlowFrameParentPtrs(aPresContext, childFrame, aState);
childFrame = childFrame->GetNextSibling();
}
}
/**
* Moves frames to a new parent, updating the style context and
* propagating relevant frame state bits. |aNewParentSC| may be null,
* in which case the child frames' style contexts will remain
* untouched. |aState| may be null, in which case the parent
* pointers of out-of-flow frames will remain untouched.
*/
static void
MoveChildrenTo(nsIPresContext* aPresContext,
nsStyleContext* aNewParentSC,
nsIFrame* aNewParent,
nsIFrame* aFrameList,
nsFrameConstructorState* aState)
{
PRBool setHasChildWithView = PR_FALSE;
while (aFrameList) {
if (!setHasChildWithView
&& (aFrameList->GetStateBits() & (NS_FRAME_HAS_VIEW | NS_FRAME_HAS_CHILD_WITH_VIEW))) {
setHasChildWithView = PR_TRUE;
}
aFrameList->SetParent(aNewParent);
// If aState is not null, the caller expects us to make adjustments
// so that placeholder out of flow frames point to the correct parent.
if (aState)
AdjustOutOfFlowFrameParentPtrs(aPresContext, aFrameList, aState);
#if 0
// XXX When this is used with {ib} frame hierarchies, it seems
// fine to leave the style contexts of the children of the
// anonymous block frame parented by the original inline
// frame. (In fact, one would expect some inheritance
// relationships to be broken if we reparented them to the
// anonymous block frame, but oddly they aren't -- need to
// investigate that...)
if (aNewParentSC)
aPresContext->ReParentStyleContext(aFrameList, aNewParentSC);
#endif
aFrameList = aFrameList->GetNextSibling();
}
if (setHasChildWithView) {
aNewParent->AddStateBits(NS_FRAME_HAS_CHILD_WITH_VIEW);
}
}
// -----------------------------------------------------------
// Structure used when creating table frames.
struct nsTableCreator {
virtual nsresult CreateTableOuterFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableCaptionFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableRowGroupFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableColFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableColGroupFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableRowFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableCellFrame(nsIFrame* aParentFrame, nsIFrame** aNewFrame);
virtual nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
nsTableCreator(nsIPresShell* aPresShell)
{
mPresShell = aPresShell;
}
virtual ~nsTableCreator() {};
nsCOMPtr<nsIPresShell> mPresShell;
};
nsresult
nsTableCreator::CreateTableOuterFrame(nsIFrame** aNewFrame) {
return NS_NewTableOuterFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableFrame(nsIFrame** aNewFrame) {
return NS_NewTableFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableCaptionFrame(nsIFrame** aNewFrame) {
return NS_NewTableCaptionFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableRowGroupFrame(nsIFrame** aNewFrame) {
return NS_NewTableRowGroupFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableColFrame(nsIFrame** aNewFrame) {
return NS_NewTableColFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableColGroupFrame(nsIFrame** aNewFrame) {
return NS_NewTableColGroupFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableRowFrame(nsIFrame** aNewFrame) {
return NS_NewTableRowFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableCellFrame(nsIFrame* aParentFrame,
nsIFrame** aNewFrame) {
return NS_NewTableCellFrame(mPresShell, IsBorderCollapse(aParentFrame), aNewFrame);
}
nsresult
nsTableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame) {
return NS_NewTableCellInnerFrame(mPresShell, aNewFrame);
}
//MathML Mod - RBS
#ifdef MOZ_MATHML
// Structure used when creating MathML mtable frames
struct nsMathMLmtableCreator: public nsTableCreator {
virtual nsresult CreateTableOuterFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableRowFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableCellFrame(nsIFrame* aParentFrame, nsIFrame** aNewFrame);
virtual nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
nsMathMLmtableCreator(nsIPresShell* aPresShell)
:nsTableCreator(aPresShell) {};
};
nsresult
nsMathMLmtableCreator::CreateTableOuterFrame(nsIFrame** aNewFrame)
{
return NS_NewMathMLmtableOuterFrame(mPresShell, aNewFrame);
}
nsresult
nsMathMLmtableCreator::CreateTableFrame(nsIFrame** aNewFrame)
{
return NS_NewMathMLmtableFrame(mPresShell, aNewFrame);
}
nsresult
nsMathMLmtableCreator::CreateTableRowFrame(nsIFrame** aNewFrame)
{
return NS_NewMathMLmtrFrame(mPresShell, aNewFrame);
}
nsresult
nsMathMLmtableCreator::CreateTableCellFrame(nsIFrame* aParentFrame,
nsIFrame** aNewFrame)
{
NS_ASSERTION(!IsBorderCollapse(aParentFrame), "not implemented");
return NS_NewMathMLmtdFrame(mPresShell, aNewFrame);
}
nsresult
nsMathMLmtableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame)
{
// only works if aNewFrame can take care of the lineLayout logic
return NS_NewMathMLmtdInnerFrame(mPresShell, aNewFrame);
}
#endif // MOZ_MATHML
/**
* If the parent frame is a |tableFrame| and the child is a
* |captionFrame|, then we want to insert the frames beneath the
* |tableFrame|'s parent frame. Returns |PR_TRUE| if the parent frame
* needed to be fixed up.
*/
static PRBool
GetCaptionAdjustedParent(nsIFrame* aParentFrame,
const nsIFrame* aChildFrame,
nsIFrame** aAdjParentFrame)
{
*aAdjParentFrame = aParentFrame;
PRBool haveCaption = PR_FALSE;
nsCOMPtr<nsIAtom> childFrameType;
aChildFrame->GetFrameType(getter_AddRefs(childFrameType));
if (nsLayoutAtoms::tableCaptionFrame == childFrameType.get()) {
haveCaption = PR_TRUE;
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrame->GetFrameType(getter_AddRefs(parentFrameType));
if (nsLayoutAtoms::tableFrame == parentFrameType.get()) {
*aAdjParentFrame = aParentFrame->GetParent();
}
}
return haveCaption;
}
// Helper function that determines the child list name that aChildFrame
// is contained in
static void
GetChildListNameFor(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIFrame* aChildFrame,
nsIAtom** aListName)
{
nsIAtom* listName;
// See if the frame is moved out of the flow
if (aChildFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
// Look at the style information to tell
const nsStyleDisplay* disp = aChildFrame->GetStyleDisplay();
if (NS_STYLE_POSITION_ABSOLUTE == disp->mPosition) {
listName = nsLayoutAtoms::absoluteList;
} else if (NS_STYLE_POSITION_FIXED == disp->mPosition) {
listName = nsLayoutAtoms::fixedList;
} else {
NS_ASSERTION(aChildFrame->GetStyleDisplay()->IsFloating(),
"not a floated frame");
listName = nsLayoutAtoms::floatList;
}
} else {
listName = nsnull;
}
// Verify that the frame is actually in that child list
#ifdef NS_DEBUG
nsIFrame* firstChild;
aParentFrame->FirstChild(aPresContext, listName, &firstChild);
nsFrameList frameList(firstChild);
NS_ASSERTION(frameList.ContainsFrame(aChildFrame), "not in child list");
#endif
NS_IF_ADDREF(listName);
*aListName = listName;
}
//----------------------------------------------------------------------
nsresult NS_CreateCSSFrameConstructor(nsICSSFrameConstructor **aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = nsnull;
nsCSSFrameConstructor *c = new nsCSSFrameConstructor();
if (!c)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(c);
nsresult rv = CallQueryInterface(c, aResult);
NS_RELEASE(c);
return rv;
}
nsCSSFrameConstructor::nsCSSFrameConstructor(void)
: nsIStyleFrameConstruction(),
mDocument(nsnull),
mInitialContainingBlock(nsnull),
mFixedContainingBlock(nsnull),
mDocElementContainingBlock(nsnull),
mGfxScrollFrame(nsnull)
{
#ifdef DEBUG
static PRBool gFirstTime = PR_TRUE;
if (gFirstTime) {
gFirstTime = PR_FALSE;
char* flags = PR_GetEnv("GECKO_FRAMECTOR_DEBUG_FLAGS");
if (flags) {
PRBool error = PR_FALSE;
for (;;) {
char* comma = PL_strchr(flags, ',');
if (comma)
*comma = '\0';
PRBool found = PR_FALSE;
FrameCtorDebugFlags* flag = gFlags;
FrameCtorDebugFlags* limit = gFlags + NUM_DEBUG_FLAGS;
while (flag < limit) {
if (PL_strcasecmp(flag->name, flags) == 0) {
*(flag->on) = PR_TRUE;
printf("nsCSSFrameConstructor: setting %s debug flag on\n", flag->name);
found = PR_TRUE;
break;
}
++flag;
}
if (! found)
error = PR_TRUE;
if (! comma)
break;
*comma = ',';
flags = comma + 1;
}
if (error) {
printf("Here are the available GECKO_FRAMECTOR_DEBUG_FLAGS:\n");
FrameCtorDebugFlags* flag = gFlags;
FrameCtorDebugFlags* limit = gFlags + NUM_DEBUG_FLAGS;
while (flag < limit) {
printf(" %s\n", flag->name);
++flag;
}
printf("Note: GECKO_FRAMECTOR_DEBUG_FLAGS is a comma separated list of flag\n");
printf("names (no whitespace)\n");
}
}
}
#endif
}
nsCSSFrameConstructor::~nsCSSFrameConstructor(void)
{
}
NS_IMPL_ISUPPORTS2(nsCSSFrameConstructor, nsIStyleFrameConstruction,nsICSSFrameConstructor)
NS_IMETHODIMP
nsCSSFrameConstructor::Init(nsIDocument* aDocument)
{
NS_PRECONDITION(aDocument, "null ptr");
if (! aDocument)
return NS_ERROR_NULL_POINTER;
if (mDocument)
return NS_ERROR_ALREADY_INITIALIZED;
mDocument = aDocument; // not refcounted!
// This initializes the Prefs booleans
mGotGfxPrefs = PR_FALSE;
mGotXBLFormPrefs = PR_FALSE;
mUseXBLForms = PR_FALSE;
UseXBLForms();
return NS_OK;
}
nsIXBLService * nsCSSFrameConstructor::GetXBLService()
{
if (!gXBLService) {
nsresult rv = CallGetService("@mozilla.org/xbl;1", &gXBLService);
if (NS_FAILED(rv))
gXBLService = nsnull;
}
return gXBLService;
}
nsresult
nsCSSFrameConstructor::CreateGeneratedFrameFor(nsIPresContext* aPresContext,
nsIDocument* aDocument,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsStyleContext* aStyleContext,
const nsStyleContent* aStyleContent,
PRUint32 aContentIndex,
nsIFrame** aFrame)
{
*aFrame = nsnull; // initialize OUT parameter
// Get the content value
const nsStyleContentData &data = aStyleContent->ContentAt(aContentIndex);
nsStyleContentType type = data.mType;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (eStyleContentType_URL == type) {
// Create an HTML image content object, and set the SRC.
// XXX Check if it's an image type we can handle...
nsINodeInfoManager *nimgr = aDocument->GetNodeInfoManager();
NS_ENSURE_TRUE(nimgr, NS_ERROR_FAILURE);
// XXXldb We should not be creating an |image| element, because it
// matches selectors! See bug 109216.
nsCOMPtr<nsINodeInfo> nodeInfo;
nimgr->GetNodeInfo(nsHTMLAtoms::img, nsnull, kNameSpaceID_None,
getter_AddRefs(nodeInfo));
nsresult rv;
nsCOMPtr<nsIElementFactory> ef(do_GetService(kHTMLElementFactoryCID,&rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIContent> content;
rv = ef->CreateInstanceByTag(nodeInfo,getter_AddRefs(content));
NS_ENSURE_SUCCESS(rv, rv);
nsCAutoString spec;
data.mContent.mURL->GetSpec(spec); // XXXldb Ugh.
content->SetAttr(kNameSpaceID_None, nsHTMLAtoms::src,
NS_ConvertUTF8toUCS2(spec), PR_FALSE);
// Set aContent as the parent content and set the document object. This
// way event handling works
content->SetParent(aContent);
content->SetDocument(aDocument, PR_TRUE, PR_TRUE);
// Create an image frame and initialize it
nsIFrame* imageFrame = nsnull;
rv = NS_NewImageFrame(shell, &imageFrame);
if (!imageFrame) {
return rv;
}
rv = imageFrame->Init(aPresContext, content, aParentFrame, aStyleContext, nsnull);
if (NS_FAILED(rv)) {
imageFrame->Destroy(aPresContext);
return rv == NS_ERROR_FRAME_REPLACED ? NS_OK : rv;
}
// Return the image frame
*aFrame = imageFrame;
} else {
nsAutoString contentString(data.mContent.mString);
switch (type) {
case eStyleContentType_String:
break;
case eStyleContentType_Attr:
{
nsIAtom* attrName = nsnull;
PRInt32 attrNameSpace = kNameSpaceID_None;
PRInt32 barIndex = contentString.FindChar('|'); // CSS namespace delimiter
if (-1 != barIndex) {
nsAutoString nameSpaceVal;
contentString.Left(nameSpaceVal, barIndex);
PRInt32 error;
attrNameSpace = nameSpaceVal.ToInteger(&error, 10);
contentString.Cut(0, barIndex + 1);
if (contentString.Length()) {
attrName = NS_NewAtom(contentString);
}
}
else {
attrName = NS_NewAtom(contentString);
}
// Creates the content and frame and return if successful
nsresult rv = NS_ERROR_FAILURE;
if (nsnull != attrName) {
nsIFrame* textFrame = nsnull;
nsCOMPtr<nsIContent> content(do_CreateInstance(kAttributeContentCID));
if (content) {
nsCOMPtr<nsIAttributeContent> attrContent(do_QueryInterface(content));
if (attrContent) {
attrContent->Init(aContent, attrNameSpace, attrName);
}
// Set aContent as the parent content and set the document object. This
// way event handling works
content->SetParent(aContent);
content->SetDocument(aDocument, PR_TRUE, PR_TRUE);
// Create a text frame and initialize it
NS_NewTextFrame(shell, &textFrame);
textFrame->Init(aPresContext, content, aParentFrame, aStyleContext, nsnull);
// Return the text frame
*aFrame = textFrame;
rv = NS_OK;
}
NS_RELEASE(attrName);
}
return rv;
}
break;
case eStyleContentType_Counter:
case eStyleContentType_Counters:
case eStyleContentType_URL:
return NS_ERROR_NOT_IMPLEMENTED; // XXX not supported yet...
case eStyleContentType_OpenQuote:
case eStyleContentType_CloseQuote:
{
const nsStyleQuotes* quotes = aStyleContext->GetStyleQuotes();
PRUint32 quotesCount = quotes->QuotesCount();
if (quotesCount > 0) {
nsAutoString openQuote, closeQuote;
// If the depth is greater than the number of pairs, the last pair
// is repeated
PRUint32 quoteDepth = 0; // XXX really track the nested quotes...
if (quoteDepth > quotesCount) {
quoteDepth = quotesCount - 1;
}
quotes->GetQuotesAt(quoteDepth, openQuote, closeQuote);
if (eStyleContentType_OpenQuote == type) {
contentString = openQuote;
} else {
contentString = closeQuote;
}
} else {
// XXX Don't assume default. Only use what is in 'quotes' property
contentString.Assign(PRUnichar('\"'));
}
}
break;
case eStyleContentType_NoOpenQuote:
case eStyleContentType_NoCloseQuote:
// XXX Adjust quote depth...
return NS_OK;
} // switch
// Create a text content node
nsIFrame* textFrame = nsnull;
nsCOMPtr<nsIContent> textContent = do_CreateInstance(kTextNodeCID);
if (textContent) {
// Set the text
nsCOMPtr<nsIDOMCharacterData> domData = do_QueryInterface(textContent);
if (domData)
domData->SetData(contentString);
// Set aContent as the parent content and set the document object. This
// way event handling works
textContent->SetParent(aContent);
textContent->SetDocument(aDocument, PR_TRUE, PR_TRUE);
// Create a text frame and initialize it
NS_NewTextFrame(shell, &textFrame);
textFrame->Init(aPresContext, textContent, aParentFrame, aStyleContext, nsnull);
}
// Return the text frame
*aFrame = textFrame;
}
return NS_OK;
}
/*
*
* aFrame - the frame that should be the parent of the generated
* content. For non-leaf frames, this is the frame for the
* corresponding content node. For leaf frames (those with non-null
* |aWrapperFrame|), this is the parent.
* aWrapperFrame - inout parameter, which may be null. If non-null,
* then the generated content being created is for a leaf frame so
* that the generated content requires a wrapper frame, which we must
* create if it hasn't been already.
*/
PRBool
nsCSSFrameConstructor::CreateGeneratedContentFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aFrame,
nsIContent* aContent,
nsStyleContext* aStyleContext,
nsIAtom* aPseudoElement,
nsIFrame** aWrapperFrame,
nsIFrame** aResult)
{
*aResult = nsnull; // initialize OUT parameter
if (!aContent->IsContentOfType(nsIContent::eELEMENT))
return PR_FALSE;
// Probe for the existence of the pseudo-element
nsRefPtr<nsStyleContext> pseudoStyleContext;
pseudoStyleContext = aPresContext->ProbePseudoStyleContextFor(aContent,
aPseudoElement,
aStyleContext);
if (pseudoStyleContext) {
// |ProbePseudoStyleContext| checks the 'display' property and the
// |ContentCount()| of the 'content' property for us.
if (aWrapperFrame) {
if (!*aWrapperFrame) {
nsIAtom *wrapperPseudo;
if (aStyleContext->GetStyleDisplay()->IsBlockLevel()) {
NS_NewBlockFrame(aPresShell, aWrapperFrame);
wrapperPseudo = nsCSSAnonBoxes::mozGCWrapperBlock;
} else {
NS_NewInlineFrame(aPresShell, aWrapperFrame);
wrapperPseudo = nsCSSAnonBoxes::mozGCWrapperInline;
}
nsStyleContext* parentSC = aStyleContext->GetParent();
nsRefPtr<nsStyleContext> wrapperSC;
wrapperSC = aPresContext->ResolvePseudoStyleContextFor(nsnull,
wrapperPseudo,
parentSC);
// |aFrame| is already the correct parent.
InitAndRestoreFrame(aPresContext, aState, aContent, aFrame,
wrapperSC, nsnull, *aWrapperFrame);
}
// Use the wrapper as the parent.
aFrame = *aWrapperFrame;
}
// Create a block box or an inline box depending on the value of
// the 'display' property
nsIFrame* containerFrame;
nsFrameItems childFrames;
if (NS_STYLE_DISPLAY_BLOCK ==
pseudoStyleContext->GetStyleDisplay()->mDisplay) {
NS_NewBlockFrame(aPresShell, &containerFrame);
} else {
NS_NewInlineFrame(aPresShell, &containerFrame);
}
InitAndRestoreFrame(aPresContext, aState, aContent,
aFrame, pseudoStyleContext, nsnull, containerFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(containerFrame, nsnull, PR_FALSE);
// Mark the frame as being associated with generated content
containerFrame->AddStateBits(NS_FRAME_GENERATED_CONTENT);
// Create another pseudo style context to use for all the generated child
// frames
nsRefPtr<nsStyleContext> textStyleContext;
textStyleContext = aPresContext->ResolveStyleContextForNonElement(pseudoStyleContext);
// Now create content objects (and child frames) for each value of the
// 'content' property
const nsStyleContent* styleContent = pseudoStyleContext->GetStyleContent();
PRUint32 contentCount = styleContent->ContentCount();
for (PRUint32 contentIndex = 0; contentIndex < contentCount; contentIndex++) {
nsIFrame* frame;
// Create a frame
nsresult result;
result = CreateGeneratedFrameFor(aPresContext, mDocument, containerFrame,
aContent, textStyleContext,
styleContent, contentIndex, &frame);
// Non-elements can't possibly have a view, so don't bother checking
if (NS_SUCCEEDED(result) && frame) {
// Add it to the list of child frames
childFrames.AddChild(frame);
}
}
if (childFrames.childList) {
containerFrame->SetInitialChildList(aPresContext, nsnull, childFrames.childList);
}
*aResult = containerFrame;
return PR_TRUE;
}
return PR_FALSE;
}
nsresult
nsCSSFrameConstructor::CreateInputFrame(nsIPresShell *aPresShell,
nsIPresContext *aPresContext,
nsIContent *aContent,
nsIFrame *&aFrame,
nsStyleContext *aStyleContext)
{
nsCOMPtr<nsIFormControl> control = do_QueryInterface(aContent);
NS_ASSERTION(control, "input is not an nsIFormControl!");
switch (control->GetType()) {
case NS_FORM_INPUT_SUBMIT:
case NS_FORM_INPUT_RESET:
case NS_FORM_INPUT_BUTTON:
if (UseXBLForms())
return NS_OK;
return NS_NewGfxButtonControlFrame(aPresShell, &aFrame);
case NS_FORM_INPUT_CHECKBOX:
if (UseXBLForms())
return NS_OK;
return ConstructCheckboxControlFrame(aPresShell, aPresContext, aFrame, aContent, aStyleContext);
case NS_FORM_INPUT_RADIO:
if (UseXBLForms())
return NS_OK;
return ConstructRadioControlFrame(aPresShell, aPresContext, aFrame, aContent, aStyleContext);
case NS_FORM_INPUT_FILE:
return NS_NewFileControlFrame(aPresShell, &aFrame);
case NS_FORM_INPUT_HIDDEN:
return NS_OK;
case NS_FORM_INPUT_IMAGE:
return NS_NewImageControlFrame(aPresShell, &aFrame);
case NS_FORM_INPUT_TEXT:
case NS_FORM_INPUT_PASSWORD:
return NS_NewTextControlFrame(aPresShell, &aFrame);
default:
NS_ASSERTION(0, "Unknown input type!");
return NS_ERROR_INVALID_ARG;
}
}
static PRBool
IsOnlyWhiteSpace(nsIContent* aContent)
{
PRBool onlyWhiteSpace = PR_FALSE;
if (aContent->IsContentOfType(nsIContent::eTEXT)) {
nsCOMPtr<nsITextContent> textContent = do_QueryInterface(aContent);
if (textContent) {
textContent->IsOnlyWhitespace(&onlyWhiteSpace);
}
}
return onlyWhiteSpace;
}
/****************************************************
** BEGIN TABLE SECTION
****************************************************/
// The term pseudo frame is being used instead of anonymous frame, since anonymous
// frame has been used elsewhere to refer to frames that have generated content
// aIncludeSpecial applies to captions, col groups, cols and cells.
// These do not generate pseudo frame wrappers for foreign children.
static PRBool
IsTableRelated(PRUint8 aDisplay,
PRBool aIncludeSpecial)
{
if ((aDisplay == NS_STYLE_DISPLAY_TABLE) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_HEADER_GROUP) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_ROW)) {
return PR_TRUE;
}
else if (aIncludeSpecial &&
((aDisplay == NS_STYLE_DISPLAY_TABLE_CAPTION) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_CELL))) {
return PR_TRUE;
}
else return PR_FALSE;
}
static PRBool
IsTableRelated(nsIAtom* aParentType,
PRBool aIncludeSpecial)
{
if ((nsLayoutAtoms::tableFrame == aParentType) ||
(nsLayoutAtoms::tableRowGroupFrame == aParentType) ||
(nsLayoutAtoms::tableRowFrame == aParentType)) {
return PR_TRUE;
}
else if (aIncludeSpecial &&
((nsLayoutAtoms::tableCaptionFrame == aParentType) ||
(nsLayoutAtoms::tableColGroupFrame == aParentType) ||
(nsLayoutAtoms::tableColFrame == aParentType) ||
IS_TABLE_CELL(aParentType))) {
return PR_TRUE;
}
else return PR_FALSE;
}
static nsIFrame*
GetOuterTableFrame(nsIFrame* aParentFrame)
{
nsIFrame* parent;
nsCOMPtr<nsIAtom> frameType;
aParentFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::tableOuterFrame == frameType.get()) {
parent = aParentFrame;
}
else {
parent = aParentFrame->GetParent();
}
return parent;
}
static nsresult
ProcessPseudoFrame(nsIPresContext* aPresContext,
nsPseudoFrameData& aPseudoData,
nsIFrame*& aParent)
{
nsresult rv = NS_OK;
if (!aPresContext) return rv;
aParent = aPseudoData.mFrame;
nsFrameItems* items = &aPseudoData.mChildList;
if (items && items->childList) {
rv = aParent->SetInitialChildList(aPresContext, nsnull, items->childList);
if (NS_FAILED(rv)) return rv;
}
aPseudoData.Reset();
return rv;
}
static nsresult
ProcessPseudoTableFrame(nsIPresContext* aPresContext,
nsPseudoFrames& aPseudoFrames,
nsIFrame*& aParent)
{
nsresult rv = NS_OK;
if (!aPresContext) return rv;
// process the col group frame, if it exists
if (aPseudoFrames.mColGroup.mFrame) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mColGroup, aParent);
}
// process the inner table frame
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mTableInner, aParent);
// process the outer table frame
aParent = aPseudoFrames.mTableOuter.mFrame;
nsFrameItems* items = &aPseudoFrames.mTableOuter.mChildList;
if (items && items->childList) {
rv = aParent->SetInitialChildList(aPresContext, nsnull, items->childList);
if (NS_FAILED(rv)) return rv;
}
nsFrameItems* captions = &aPseudoFrames.mTableOuter.mChildList2;
if (captions && captions->childList) {
rv = aParent->SetInitialChildList(aPresContext, nsLayoutAtoms::captionList, captions->childList);
}
aPseudoFrames.mTableOuter.Reset();
return rv;
}
static nsresult
ProcessPseudoCellFrame(nsIPresContext* aPresContext,
nsPseudoFrames& aPseudoFrames,
nsIFrame*& aParent)
{
nsresult rv = NS_OK;
if (!aPresContext) return rv;
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mCellInner, aParent);
if (NS_FAILED(rv)) return rv;
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mCellOuter, aParent);
return rv;
}
static nsresult
ProcessPseudoFrames(nsIPresContext* aPresContext,
nsPseudoFrames& aPseudoFrames,
nsIAtom* aHighestType,
nsIFrame*& aHighestFrame)
{
nsresult rv = NS_OK;
if (!aPresContext) return rv;
aHighestFrame = nsnull;
if (nsLayoutAtoms::tableFrame == aPseudoFrames.mLowestType) {
rv = ProcessPseudoTableFrame(aPresContext, aPseudoFrames, aHighestFrame);
if (nsLayoutAtoms::tableOuterFrame == aHighestType) return rv;
if (aPseudoFrames.mCellOuter.mFrame) {
rv = ProcessPseudoCellFrame(aPresContext, aPseudoFrames, aHighestFrame);
if (IS_TABLE_CELL(aHighestType)) return rv;
}
if (aPseudoFrames.mRow.mFrame) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRow, aHighestFrame);
if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv;
}
if (aPseudoFrames.mRowGroup.mFrame) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRowGroup, aHighestFrame);
if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv;
}
}
else if (nsLayoutAtoms::tableRowGroupFrame == aPseudoFrames.mLowestType) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRowGroup, aHighestFrame);
if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv;
if (aPseudoFrames.mTableOuter.mFrame) {
rv = ProcessPseudoTableFrame(aPresContext, aPseudoFrames, aHighestFrame);
if (nsLayoutAtoms::tableOuterFrame == aHighestType) return rv;
}
if (aPseudoFrames.mCellOuter.mFrame) {
rv = ProcessPseudoCellFrame(aPresContext, aPseudoFrames, aHighestFrame);
if (IS_TABLE_CELL(aHighestType)) return rv;
}
if (aPseudoFrames.mRow.mFrame) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRow, aHighestFrame);
if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv;
}
}
else if (nsLayoutAtoms::tableRowFrame == aPseudoFrames.mLowestType) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRow, aHighestFrame);
if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv;
if (aPseudoFrames.mRowGroup.mFrame) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRowGroup, aHighestFrame);
if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv;
}
if (aPseudoFrames.mTableOuter.mFrame) {
rv = ProcessPseudoTableFrame(aPresContext, aPseudoFrames, aHighestFrame);
if (nsLayoutAtoms::tableOuterFrame == aHighestType) return rv;
}
if (aPseudoFrames.mCellOuter.mFrame) {
rv = ProcessPseudoCellFrame(aPresContext, aPseudoFrames, aHighestFrame);
if (IS_TABLE_CELL(aHighestType)) return rv;
}
}
else if (IS_TABLE_CELL(aPseudoFrames.mLowestType)) {
rv = ProcessPseudoCellFrame(aPresContext, aPseudoFrames, aHighestFrame);
if (IS_TABLE_CELL(aHighestType)) return rv;
if (aPseudoFrames.mRow.mFrame) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRow, aHighestFrame);
if (nsLayoutAtoms::tableRowFrame == aHighestType) return rv;
}
if (aPseudoFrames.mRowGroup.mFrame) {
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mRowGroup, aHighestFrame);
if (nsLayoutAtoms::tableRowGroupFrame == aHighestType) return rv;
}
if (aPseudoFrames.mTableOuter.mFrame) {
rv = ProcessPseudoTableFrame(aPresContext, aPseudoFrames, aHighestFrame);
}
}
else if (aPseudoFrames.mColGroup.mFrame) {
// process the col group frame
rv = ProcessPseudoFrame(aPresContext, aPseudoFrames.mColGroup, aHighestFrame);
}
return rv;
}
static nsresult
ProcessPseudoFrames(nsIPresContext* aPresContext,
nsPseudoFrames& aPseudoFrames,
nsFrameItems& aItems)
{
nsIFrame* highestFrame;
nsresult rv = ProcessPseudoFrames(aPresContext, aPseudoFrames, nsnull, highestFrame);
if (highestFrame) {
aItems.AddChild(highestFrame);
}
aPseudoFrames.Reset();
return rv;
}
static nsresult
ProcessPseudoFrames(nsIPresContext* aPresContext,
nsPseudoFrames& aPseudoFrames,
nsIAtom* aHighestType)
{
nsIFrame* highestFrame;
nsresult rv = ProcessPseudoFrames(aPresContext, aPseudoFrames, aHighestType, highestFrame);
return rv;
}
nsresult
nsCSSFrameConstructor::CreatePseudoTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame* aParentFrameIn)
{
nsresult rv = NS_OK;
nsIFrame* parentFrame = (aState.mPseudoFrames.mCellInner.mFrame)
? aState.mPseudoFrames.mCellInner.mFrame : aParentFrameIn;
if (!parentFrame) return rv;
nsStyleContext *parentStyle;
nsRefPtr<nsStyleContext> childStyle;
parentStyle = parentFrame->GetStyleContext();
nsIContent* parentContent = parentFrame->GetContent();
// create the SC for the inner table which will be the parent of the outer table's SC
childStyle = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsCSSAnonBoxes::table,
parentStyle);
nsPseudoFrameData& pseudoOuter = aState.mPseudoFrames.mTableOuter;
nsPseudoFrameData& pseudoInner = aState.mPseudoFrames.mTableInner;
// construct the pseudo outer and inner as part of the pseudo frames
PRBool pseudoParent;
nsFrameItems items;
rv = ConstructTableFrame(aPresShell, aPresContext, aState, parentContent,
parentFrame, parentFrame, childStyle, aTableCreator,
PR_TRUE, items, pseudoOuter.mFrame,
pseudoInner.mFrame, pseudoParent);
if (NS_FAILED(rv)) return rv;
// set pseudo data for the newly created frames
pseudoOuter.mChildList.AddChild(pseudoInner.mFrame);
aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableFrame;
// set pseudo data for the parent
if (aState.mPseudoFrames.mCellInner.mFrame) {
aState.mPseudoFrames.mCellInner.mChildList.AddChild(pseudoOuter.mFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::CreatePseudoRowGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame* aParentFrameIn)
{
nsresult rv = NS_OK;
nsIFrame* parentFrame = (aState.mPseudoFrames.mTableInner.mFrame)
? aState.mPseudoFrames.mTableInner.mFrame : aParentFrameIn;
if (!parentFrame) return rv;
nsStyleContext *parentStyle;
nsRefPtr<nsStyleContext> childStyle;
parentStyle = parentFrame->GetStyleContext();
nsIContent* parentContent = parentFrame->GetContent();
childStyle = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsCSSAnonBoxes::tableRowGroup,
parentStyle);
nsPseudoFrameData& pseudo = aState.mPseudoFrames.mRowGroup;
// construct the pseudo row group as part of the pseudo frames
PRBool pseudoParent;
nsFrameItems items;
rv = ConstructTableRowGroupFrame(aPresShell, aPresContext, aState, parentContent,
parentFrame, childStyle, aTableCreator,
PR_TRUE, items, pseudo.mFrame, pseudoParent);
if (NS_FAILED(rv)) return rv;
// set pseudo data for the newly created frames
aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableRowGroupFrame;
// set pseudo data for the parent
if (aState.mPseudoFrames.mTableInner.mFrame) {
aState.mPseudoFrames.mTableInner.mChildList.AddChild(pseudo.mFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::CreatePseudoColGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame* aParentFrameIn)
{
nsresult rv = NS_OK;
nsIFrame* parentFrame = (aState.mPseudoFrames.mTableInner.mFrame)
? aState.mPseudoFrames.mTableInner.mFrame : aParentFrameIn;
if (!parentFrame) return rv;
nsStyleContext *parentStyle;
nsRefPtr<nsStyleContext> childStyle;
parentStyle = parentFrame->GetStyleContext();
nsIContent* parentContent = parentFrame->GetContent();
childStyle = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsCSSAnonBoxes::tableColGroup,
parentStyle);
nsPseudoFrameData& pseudo = aState.mPseudoFrames.mColGroup;
// construct the pseudo col group as part of the pseudo frames
PRBool pseudoParent;
nsFrameItems items;
rv = ConstructTableColGroupFrame(aPresShell, aPresContext, aState, parentContent,
parentFrame, childStyle, aTableCreator,
PR_TRUE, items, pseudo.mFrame, pseudoParent);
if (NS_FAILED(rv)) return rv;
((nsTableColGroupFrame*)pseudo.mFrame)->SetType(eColGroupAnonymousCol);
// set pseudo data for the parent
if (aState.mPseudoFrames.mTableInner.mFrame) {
aState.mPseudoFrames.mTableInner.mChildList.AddChild(pseudo.mFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::CreatePseudoRowFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame* aParentFrameIn)
{
nsresult rv = NS_OK;
nsIFrame* parentFrame = (aState.mPseudoFrames.mRowGroup.mFrame)
? aState.mPseudoFrames.mRowGroup.mFrame : aParentFrameIn;
if (!parentFrame) return rv;
nsStyleContext *parentStyle;
nsRefPtr<nsStyleContext> childStyle;
parentStyle = parentFrame->GetStyleContext();
nsIContent* parentContent = parentFrame->GetContent();
childStyle = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsCSSAnonBoxes::tableRow,
parentStyle);
nsPseudoFrameData& pseudo = aState.mPseudoFrames.mRow;
// construct the pseudo row as part of the pseudo frames
PRBool pseudoParent;
nsFrameItems items;
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, parentContent,
parentFrame, childStyle, aTableCreator,
PR_TRUE, items, pseudo.mFrame, pseudoParent);
if (NS_FAILED(rv)) return rv;
aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableRowFrame;
// set pseudo data for the parent
if (aState.mPseudoFrames.mRowGroup.mFrame) {
aState.mPseudoFrames.mRowGroup.mChildList.AddChild(pseudo.mFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::CreatePseudoCellFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame* aParentFrameIn)
{
nsresult rv = NS_OK;
nsIFrame* parentFrame = (aState.mPseudoFrames.mRow.mFrame)
? aState.mPseudoFrames.mRow.mFrame : aParentFrameIn;
if (!parentFrame) return rv;
nsStyleContext *parentStyle;
nsRefPtr<nsStyleContext> childStyle;
parentStyle = parentFrame->GetStyleContext();
nsIContent* parentContent = parentFrame->GetContent();
childStyle = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsCSSAnonBoxes::tableCell,
parentStyle);
nsPseudoFrameData& pseudoOuter = aState.mPseudoFrames.mCellOuter;
nsPseudoFrameData& pseudoInner = aState.mPseudoFrames.mCellInner;
// construct the pseudo outer and inner as part of the pseudo frames
PRBool pseudoParent;
nsFrameItems items;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, parentContent,
parentFrame, childStyle, aTableCreator,
PR_TRUE, items, pseudoOuter.mFrame,
pseudoInner.mFrame, pseudoParent);
if (NS_FAILED(rv)) return rv;
// set pseudo data for the newly created frames
pseudoOuter.mChildList.AddChild(pseudoInner.mFrame);
// give it nsLayoutAtoms::tableCellFrame, if it is really nsLayoutAtoms::bcTableCellFrame, it will match later
aState.mPseudoFrames.mLowestType = nsLayoutAtoms::tableCellFrame;
// set pseudo data for the parent
if (aState.mPseudoFrames.mRow.mFrame) {
aState.mPseudoFrames.mRow.mChildList.AddChild(pseudoOuter.mFrame);
}
return rv;
}
// called if the parent is not a table
nsresult
nsCSSFrameConstructor::GetPseudoTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame& aParentFrameIn)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext) return rv;
nsPseudoFrames& pseudoFrames = aState.mPseudoFrames;
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrameIn.GetFrameType(getter_AddRefs(parentFrameType));
if (pseudoFrames.IsEmpty()) {
PRBool created = PR_FALSE;
if (nsLayoutAtoms::tableRowGroupFrame == parentFrameType.get()) { // row group parent
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
if (NS_FAILED(rv)) return rv;
created = PR_TRUE;
}
if (created || (nsLayoutAtoms::tableRowFrame == parentFrameType.get())) { // row parent
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
if (NS_FAILED(rv)) return rv;
}
rv = CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
else {
if (!pseudoFrames.mTableInner.mFrame) {
if (pseudoFrames.mRowGroup.mFrame && !(pseudoFrames.mRow.mFrame)) {
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState);
if (NS_FAILED(rv)) return rv;
}
if (pseudoFrames.mRow.mFrame && !(pseudoFrames.mCellOuter.mFrame)) {
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState);
if (NS_FAILED(rv)) return rv;
}
CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState);
}
}
return rv;
}
// called if the parent is not a col group
nsresult
nsCSSFrameConstructor::GetPseudoColGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame& aParentFrameIn)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext) return rv;
nsPseudoFrames& pseudoFrames = aState.mPseudoFrames;
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrameIn.GetFrameType(getter_AddRefs(parentFrameType));
if (pseudoFrames.IsEmpty()) {
PRBool created = PR_FALSE;
if (nsLayoutAtoms::tableRowGroupFrame == parentFrameType.get()) { // row group parent
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
created = PR_TRUE;
}
if (created || (nsLayoutAtoms::tableRowFrame == parentFrameType.get())) { // row parent
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
created = PR_TRUE;
}
if (created || IS_TABLE_CELL(parentFrameType.get()) || // cell parent
!IsTableRelated(parentFrameType.get(), PR_TRUE)) { // block parent
rv = CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
rv = CreatePseudoColGroupFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
else {
if (!pseudoFrames.mColGroup.mFrame) {
if (pseudoFrames.mRowGroup.mFrame && !(pseudoFrames.mRow.mFrame)) {
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState);
}
if (pseudoFrames.mRow.mFrame && !(pseudoFrames.mCellOuter.mFrame)) {
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState);
}
if (pseudoFrames.mCellOuter.mFrame && !(pseudoFrames.mTableOuter.mFrame)) {
rv = CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState);
}
rv = CreatePseudoColGroupFrame(aPresShell, aPresContext, aTableCreator, aState);
}
}
return rv;
}
// called if the parent is not a row group
nsresult
nsCSSFrameConstructor::GetPseudoRowGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame& aParentFrameIn)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext) return rv;
nsPseudoFrames& pseudoFrames = aState.mPseudoFrames;
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrameIn.GetFrameType(getter_AddRefs(parentFrameType));
if (pseudoFrames.IsEmpty()) {
PRBool created = PR_FALSE;
if (nsLayoutAtoms::tableRowFrame == parentFrameType.get()) { // row parent
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
created = PR_TRUE;
}
if (created || IS_TABLE_CELL(parentFrameType.get()) || // cell parent
!IsTableRelated(parentFrameType.get(), PR_TRUE)) { // block parent
rv = CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
rv = CreatePseudoRowGroupFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
else {
if (!pseudoFrames.mRowGroup.mFrame) {
if (pseudoFrames.mRow.mFrame && !(pseudoFrames.mCellOuter.mFrame)) {
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState);
}
if (pseudoFrames.mCellOuter.mFrame && !(pseudoFrames.mTableOuter.mFrame)) {
rv = CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState);
}
rv = CreatePseudoRowGroupFrame(aPresShell, aPresContext, aTableCreator, aState);
}
}
return rv;
}
// called if the parent is not a row
nsresult
nsCSSFrameConstructor::GetPseudoRowFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame& aParentFrameIn)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext) return rv;
nsPseudoFrames& pseudoFrames = aState.mPseudoFrames;
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrameIn.GetFrameType(getter_AddRefs(parentFrameType));
if (pseudoFrames.IsEmpty()) {
PRBool created = PR_FALSE;
if (IS_TABLE_CELL(parentFrameType.get()) || // cell parent
!IsTableRelated(parentFrameType.get(), PR_TRUE)) { // block parent
rv = CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
created = PR_TRUE;
}
if (created || (nsLayoutAtoms::tableFrame == parentFrameType.get())) { // table parent
rv = CreatePseudoRowGroupFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
else {
if (!pseudoFrames.mRow.mFrame) {
if (pseudoFrames.mCellOuter.mFrame && !pseudoFrames.mTableOuter.mFrame) {
rv = CreatePseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState);
}
if (pseudoFrames.mTableInner.mFrame && !(pseudoFrames.mRowGroup.mFrame)) {
rv = CreatePseudoRowGroupFrame(aPresShell, aPresContext, aTableCreator, aState);
}
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState);
}
}
return rv;
}
// called if the parent is not a cell or block
nsresult
nsCSSFrameConstructor::GetPseudoCellFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsFrameConstructorState& aState,
nsIFrame& aParentFrameIn)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext) return rv;
nsPseudoFrames& pseudoFrames = aState.mPseudoFrames;
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrameIn.GetFrameType(getter_AddRefs(parentFrameType));
if (pseudoFrames.IsEmpty()) {
PRBool created = PR_FALSE;
if (nsLayoutAtoms::tableFrame == parentFrameType.get()) { // table parent
rv = CreatePseudoRowGroupFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
created = PR_TRUE;
}
if (created || (nsLayoutAtoms::tableRowGroupFrame == parentFrameType.get())) { // row group parent
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
created = PR_TRUE;
}
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState, &aParentFrameIn);
}
else if (!pseudoFrames.mCellOuter.mFrame) {
if (pseudoFrames.mTableInner.mFrame && !(pseudoFrames.mRowGroup.mFrame)) {
rv = CreatePseudoRowGroupFrame(aPresShell, aPresContext, aTableCreator, aState);
}
if (pseudoFrames.mRowGroup.mFrame && !(pseudoFrames.mRow.mFrame)) {
rv = CreatePseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState);
}
rv = CreatePseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState);
}
return rv;
}
nsresult
nsCSSFrameConstructor::GetParentFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsTableCreator& aTableCreator,
nsIFrame& aParentFrameIn,
nsIAtom* aChildFrameType,
nsFrameConstructorState& aState,
nsIFrame*& aParentFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext) return rv;
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrameIn.GetFrameType(getter_AddRefs(parentFrameType));
nsIFrame* pseudoParentFrame = nsnull;
nsPseudoFrames& pseudoFrames = aState.mPseudoFrames;
aParentFrame = &aParentFrameIn;
aIsPseudoParent = PR_FALSE;
if (nsLayoutAtoms::tableOuterFrame == aChildFrameType) { // table child
if (IsTableRelated(parentFrameType.get(), PR_TRUE) &&
(nsLayoutAtoms::tableCaptionFrame != parentFrameType.get()) ) { // need pseudo cell parent
rv = GetPseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mCellInner.mFrame;
}
}
else if (nsLayoutAtoms::tableCaptionFrame == aChildFrameType) { // caption child
if (nsLayoutAtoms::tableOuterFrame != parentFrameType.get()) { // need pseudo table parent
rv = GetPseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mTableOuter.mFrame;
}
}
else if (nsLayoutAtoms::tableColGroupFrame == aChildFrameType) { // col group child
if (nsLayoutAtoms::tableFrame != parentFrameType.get()) { // need pseudo table parent
rv = GetPseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mTableInner.mFrame;
}
}
else if (nsLayoutAtoms::tableColFrame == aChildFrameType) { // col child
if (nsLayoutAtoms::tableColGroupFrame != parentFrameType.get()) { // need pseudo col group parent
rv = GetPseudoColGroupFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mColGroup.mFrame;
}
}
else if (nsLayoutAtoms::tableRowGroupFrame == aChildFrameType) { // row group child
// XXX can this go away?
if (nsLayoutAtoms::tableFrame != parentFrameType.get()) {
// trees allow row groups to contain row groups, so don't create pseudo frames
rv = GetPseudoTableFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mTableInner.mFrame;
}
}
else if (nsLayoutAtoms::tableRowFrame == aChildFrameType) { // row child
if (nsLayoutAtoms::tableRowGroupFrame != parentFrameType.get()) { // need pseudo row group parent
rv = GetPseudoRowGroupFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mRowGroup.mFrame;
}
}
else if (IS_TABLE_CELL(aChildFrameType)) { // cell child
if (nsLayoutAtoms::tableRowFrame != parentFrameType.get()) { // need pseudo row parent
rv = GetPseudoRowFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mRow.mFrame;
}
}
else if (nsLayoutAtoms::tableFrame == aChildFrameType) { // invalid
NS_ASSERTION(PR_FALSE, "GetParentFrame called on nsLayoutAtoms::tableFrame child");
}
else { // foreign frame
if (IsTableRelated(parentFrameType.get(), PR_FALSE)) { // need pseudo cell parent
rv = GetPseudoCellFrame(aPresShell, aPresContext, aTableCreator, aState, aParentFrameIn);
if (NS_FAILED(rv)) return rv;
pseudoParentFrame = pseudoFrames.mCellInner.mFrame;
}
}
if (pseudoParentFrame) {
aParentFrame = pseudoParentFrame;
aIsPseudoParent = PR_TRUE;
}
return rv;
}
// Construct the outer, inner table frames and the children frames for the table.
// XXX Page break frames for pseudo table frames are not constructed to avoid the risk
// associated with revising the pseudo frame mechanism. The long term solution
// of having frames handle page-break-before/after will solve the problem.
nsresult
nsCSSFrameConstructor::ConstructTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aGeometricParent,
nsIFrame* aContentParent,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
PRBool aIsPseudo,
nsFrameItems& aChildItems,
nsIFrame*& aNewOuterFrame,
nsIFrame*& aNewInnerFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aGeometricParent) return rv;
// Create the outer table frame which holds the caption and inner table frame
aTableCreator.CreateTableOuterFrame(&aNewOuterFrame);
nsIFrame* parentFrame = aGeometricParent;
aIsPseudoParent = PR_FALSE;
if (!aIsPseudo) {
// this frame may have a pseudo parent
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aGeometricParent,
nsLayoutAtoms::tableOuterFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mTableOuter.mFrame) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, nsLayoutAtoms::tableOuterFrame);
}
}
// create the pseudo SC for the outer table as a child of the inner SC
nsRefPtr<nsStyleContext> outerStyleContext;
outerStyleContext = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::tableOuter,
aStyleContext);
// Init the table outer frame and see if we need to create a view, e.g.
// the frame is absolutely positioned
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, outerStyleContext, nsnull, aNewOuterFrame);
nsHTMLContainerFrame::CreateViewForFrame(aNewOuterFrame, aContentParent,
PR_FALSE);
// Create the inner table frame
aTableCreator.CreateTableFrame(&aNewInnerFrame);
InitAndRestoreFrame(aPresContext, aState, aContent,
aNewOuterFrame, aStyleContext, nsnull, aNewInnerFrame);
if (!aIsPseudo) {
nsFrameItems childItems;
nsIFrame* captionFrame;
rv = TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewInnerFrame,
aTableCreator, childItems, captionFrame);
if (NS_FAILED(rv)) return rv;
// if there are any anonymous children for the table, create frames for them
CreateAnonymousFrames(aPresShell, aPresContext, nsnull, aState, aContent, aNewInnerFrame,
PR_FALSE, childItems);
// Set the inner table frame's initial primary list
aNewInnerFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// Set the outer table frame's primary and option lists
aNewOuterFrame->SetInitialChildList(aPresContext, nsnull, aNewInnerFrame);
if (captionFrame) {
aNewOuterFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::captionList, captionFrame);
}
if (aIsPseudoParent) {
aState.mPseudoFrames.mCellInner.mChildList.AddChild(aNewOuterFrame);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCaptionFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrameIn,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
nsFrameItems& aChildItems,
nsIFrame*& aNewFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aParentFrameIn) return rv;
nsIFrame* parentFrame = aParentFrameIn;
aIsPseudoParent = PR_FALSE;
// this frame may have a pseudo parent
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aParentFrameIn,
nsLayoutAtoms::tableCaptionFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
rv = aTableCreator.CreateTableCaptionFrame(&aNewFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, aStyleContext, nsnull, aNewFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE);
nsFrameItems childItems;
// pass in aTableCreator so ProcessChildren will call TableProcessChildren
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewFrame,
PR_TRUE, childItems, PR_TRUE, &aTableCreator);
if (NS_FAILED(rv)) return rv;
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aIsPseudoParent) {
aState.mPseudoFrames.mTableOuter.mChildList2.AddChild(aNewFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrameIn,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
PRBool aIsPseudo,
nsFrameItems& aChildItems,
nsIFrame*& aNewFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aParentFrameIn) return rv;
nsIFrame* parentFrame = aParentFrameIn;
aIsPseudoParent = PR_FALSE;
if (!aIsPseudo) {
// this frame may have a pseudo parent
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aParentFrameIn,
nsLayoutAtoms::tableRowGroupFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mRowGroup.mFrame) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, nsLayoutAtoms::tableRowGroupFrame);
}
}
const nsStyleDisplay* styleDisplay = aStyleContext->GetStyleDisplay();
rv = aTableCreator.CreateTableRowGroupFrame(&aNewFrame);
nsIFrame* scrollFrame = nsnull;
if (IsScrollable(aPresContext, styleDisplay)) {
// Create an area container for the frame
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext,
aNewFrame, parentFrame, nsnull, scrollFrame, aStyleContext);
}
else {
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent, parentFrame,
aStyleContext, nsnull, aNewFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE);
}
if (!aIsPseudo) {
nsFrameItems childItems;
nsIFrame* captionFrame;
rv = TableProcessChildren(aPresShell, aPresContext, aState, aContent,
aNewFrame, aTableCreator, childItems, captionFrame);
if (NS_FAILED(rv)) return rv;
// if there are any anonymous children for the table, create frames for them
CreateAnonymousFrames(aPresShell, aPresContext, nsnull, aState, aContent, aNewFrame,
PR_FALSE, childItems);
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aIsPseudoParent) {
nsIFrame* child = (scrollFrame) ? scrollFrame : aNewFrame;
aState.mPseudoFrames.mTableInner.mChildList.AddChild(child);
}
}
// if there is a scroll frame, use it as the one constructed
if (scrollFrame) {
aNewFrame = scrollFrame;
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableColGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrameIn,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
PRBool aIsPseudo,
nsFrameItems& aChildItems,
nsIFrame*& aNewFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aParentFrameIn) return rv;
nsIFrame* parentFrame = aParentFrameIn;
aIsPseudoParent = PR_FALSE;
if (!aIsPseudo) {
// this frame may have a pseudo parent
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aParentFrameIn,
nsLayoutAtoms::tableColGroupFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mColGroup.mFrame) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, nsLayoutAtoms::tableColGroupFrame);
}
}
rv = aTableCreator.CreateTableColGroupFrame(&aNewFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, aStyleContext, nsnull, aNewFrame);
if (!aIsPseudo) {
nsFrameItems childItems;
nsIFrame* captionFrame;
rv = TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewFrame,
aTableCreator, childItems, captionFrame);
if (NS_FAILED(rv)) return rv;
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aIsPseudoParent) {
aState.mPseudoFrames.mTableInner.mChildList.AddChild(aNewFrame);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrameIn,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
PRBool aIsPseudo,
nsFrameItems& aChildItems,
nsIFrame*& aNewFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aParentFrameIn) return rv;
nsIFrame* parentFrame = aParentFrameIn;
aIsPseudoParent = PR_FALSE;
if (!aIsPseudo) {
// this frame may have a pseudo parent
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aParentFrameIn,
nsLayoutAtoms::tableRowFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mRow.mFrame) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, nsLayoutAtoms::tableRowFrame);
}
}
rv = aTableCreator.CreateTableRowFrame(&aNewFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, aStyleContext, nsnull, aNewFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE);
if (!aIsPseudo) {
nsFrameItems childItems;
nsIFrame* captionFrame;
rv = TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewFrame,
aTableCreator, childItems, captionFrame);
if (NS_FAILED(rv)) return rv;
// if there are any anonymous children for the table, create frames for them
CreateAnonymousFrames(aPresShell, aPresContext, nsnull, aState, aContent, aNewFrame,
PR_FALSE, childItems);
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aIsPseudoParent) {
aState.mPseudoFrames.mRowGroup.mChildList.AddChild(aNewFrame);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableColFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrameIn,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
PRBool aIsPseudo,
nsFrameItems& aChildItems,
nsIFrame*& aNewFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aParentFrameIn || !aStyleContext) return rv;
nsIFrame* parentFrame = aParentFrameIn;
aIsPseudoParent = PR_FALSE;
if (!aIsPseudo) {
// this frame may have a pseudo parent
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aParentFrameIn,
nsLayoutAtoms::tableColFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
}
rv = aTableCreator.CreateTableColFrame(&aNewFrame); if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent, parentFrame, aStyleContext, nsnull, aNewFrame);
// if the parent frame was anonymous then reparent the style context
nsStyleContext* parentStyleContext = parentFrame->GetStyleContext();
if (aIsPseudoParent) {
aPresContext->ReParentStyleContext(aNewFrame, parentStyleContext);
}
// construct additional col frames if the col frame has a span > 1
PRInt32 span = 1;
nsCOMPtr<nsIDOMHTMLTableColElement> cgContent(do_QueryInterface(aContent));
if (cgContent) {
cgContent->GetSpan(&span);
nsIFrame* lastCol = aNewFrame;
nsStyleContext* styleContext = nsnull;
for (PRInt32 spanX = 1; spanX < span; spanX++) {
// The same content node should always resolve to the same style context.
if (1 == spanX)
styleContext = aNewFrame->GetStyleContext();
nsIFrame* newCol;
rv = aTableCreator.CreateTableColFrame(&newCol); if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent, parentFrame,
styleContext, nsnull, newCol);
((nsTableColFrame*)newCol)->SetType(eColAnonymousCol);
lastCol->SetNextSibling(newCol);
lastCol = newCol;
}
}
if (!aIsPseudo) {
nsFrameItems childItems;
nsIFrame* captionFrame;
rv = TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewFrame,
aTableCreator, childItems, captionFrame);
if (NS_FAILED(rv)) return rv;
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aIsPseudoParent) {
aState.mPseudoFrames.mColGroup.mChildList.AddChild(aNewFrame);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCellFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrameIn,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
PRBool aIsPseudo,
nsFrameItems& aChildItems,
nsIFrame*& aNewCellOuterFrame,
nsIFrame*& aNewCellInnerFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aParentFrameIn) return rv;
nsIFrame* parentFrame = aParentFrameIn;
aIsPseudoParent = PR_FALSE;
if (!aIsPseudo) {
// this frame may have a pseudo parent
// use nsLayoutAtoms::tableCellFrame which will match if it is really nsLayoutAtoms::bcTableCellFrame
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aParentFrameIn,
nsLayoutAtoms::tableCellFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
if (!aIsPseudo && aIsPseudoParent && aState.mPseudoFrames.mCellOuter.mFrame) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, nsLayoutAtoms::tableCellFrame);
}
}
rv = aTableCreator.CreateTableCellFrame(parentFrame, &aNewCellOuterFrame);
if (NS_FAILED(rv)) return rv;
// Initialize the table cell frame
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, aStyleContext, nsnull, aNewCellOuterFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aNewCellOuterFrame, nsnull, PR_FALSE);
// Create a block frame that will format the cell's content
rv = aTableCreator.CreateTableCellInnerFrame(&aNewCellInnerFrame);
if (NS_FAILED(rv)) {
aNewCellOuterFrame->Destroy(aPresContext);
aNewCellOuterFrame = nsnull;
return rv;
}
// Resolve pseudo style and initialize the body cell frame
nsRefPtr<nsStyleContext> innerPseudoStyle;
innerPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::cellContent,
aStyleContext);
InitAndRestoreFrame(aPresContext, aState, aContent,
aNewCellOuterFrame, innerPseudoStyle, nsnull, aNewCellInnerFrame);
if (!aIsPseudo) {
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
// The block frame is a float container
nsFrameConstructorSaveState floatSaveState;
aState.PushFloatContainingBlock(aNewCellInnerFrame, floatSaveState,
haveFirstLetterStyle, haveFirstLineStyle);
// Process the child content
nsFrameItems childItems;
// pass in null tableCreator so ProcessChildren will not call TableProcessChildren
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewCellInnerFrame,
PR_TRUE, childItems, PR_TRUE, nsnull);
if (NS_FAILED(rv)) return rv;
aNewCellInnerFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mFloatedItems.childList) {
aNewCellInnerFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
aNewCellOuterFrame->SetInitialChildList(aPresContext, nsnull, aNewCellInnerFrame);
if (aIsPseudoParent) {
aState.mPseudoFrames.mRow.mChildList.AddChild(aNewCellOuterFrame);
}
}
return rv;
}
PRBool
nsCSSFrameConstructor::MustGeneratePseudoParent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIContent* aContent,
nsStyleContext* aStyleContext)
{
if (!aStyleContext)
return PR_FALSE;
if (NS_STYLE_DISPLAY_NONE == aStyleContext->GetStyleDisplay()->mDisplay)
return PR_FALSE;
// check tags first
if ((nsLayoutAtoms::textTagName == aTag)) {
return !IsOnlyWhiteSpace(aContent);
}
// exclude tags
if ( nsLayoutAtoms::commentTagName == aTag) {
return PR_FALSE;
}
return PR_TRUE;
}
// this is called when a non table related element is a child of a table, row group,
// or row, but not a cell.
nsresult
nsCSSFrameConstructor::ConstructTableForeignFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrameIn,
nsStyleContext* aStyleContext,
nsTableCreator& aTableCreator,
nsFrameItems& aChildItems,
nsIFrame*& aNewFrame,
PRBool& aIsPseudoParent)
{
nsresult rv = NS_OK;
aNewFrame = nsnull;
if (!aPresShell || !aPresContext || !aParentFrameIn) return rv;
nsIFrame* parentFrame = nsnull;
aIsPseudoParent = PR_FALSE;
// XXX form code needs to be fixed so that the forms can work without a frame.
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
// Do not construct pseudo frames for trees
if (MustGeneratePseudoParent(aPresContext, aParentFrameIn, tag.get(), aContent, aStyleContext)) {
// this frame may have a pseudo parent, use block frame type to trigger foreign
GetParentFrame(aPresShell, aPresContext, aTableCreator, *aParentFrameIn,
nsLayoutAtoms::blockFrame, aState, parentFrame, aIsPseudoParent);
if (!aIsPseudoParent && !aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
//char buf[256];
//sprintf(buf, "anonymous frame constructed for %s", tag.get());
//NS_WARN_IF_FALSE(PR_FALSE, buf);
}
if (!parentFrame) return rv; // if pseudo frame wasn't created
// save the pseudo frame state XXX - why
nsPseudoFrames prevPseudoFrames;
aState.mPseudoFrames.Reset(&prevPseudoFrames);
nsFrameItems items;
rv = ConstructFrame(aPresShell, aPresContext, aState, aContent, parentFrame, items);
aNewFrame = items.childList;
// restore the pseudo frame state XXX - why
aState.mPseudoFrames = prevPseudoFrames;
if (aIsPseudoParent) {
aState.mPseudoFrames.mCellInner.mChildList.AddChild(aNewFrame);
}
return rv;
}
static PRBool
NeedFrameFor(nsIFrame* aParentFrame,
nsIContent* aChildContent)
{
// don't create a whitespace frame if aParentFrame doesn't want it
if ((NS_FRAME_EXCLUDE_IGNORABLE_WHITESPACE & aParentFrame->GetStateBits())
&& IsOnlyWhiteSpace(aChildContent)) {
return PR_FALSE;
}
return PR_TRUE;
}
nsresult
nsCSSFrameConstructor::TableProcessChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsTableCreator& aTableCreator,
nsFrameItems& aChildItems,
nsIFrame*& aCaption)
{
nsresult rv = NS_OK;
if (!aPresShell || !aPresContext || !aContent || !aParentFrame) return rv;
aCaption = nsnull;
// save the incoming pseudo frame state
nsPseudoFrames priorPseudoFrames;
aState.mPseudoFrames.Reset(&priorPseudoFrames);
nsCOMPtr<nsIAtom> parentFrameType;
aParentFrame->GetFrameType(getter_AddRefs(parentFrameType));
nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext();
ChildIterator iter, last;
for (ChildIterator::Init(aContent, &iter, &last);
iter != last;
++iter) {
nsCOMPtr<nsIContent> childContent = *iter;
if (childContent &&
(childContent->IsContentOfType(nsIContent::eELEMENT) ||
childContent->IsContentOfType(nsIContent::eTEXT)) &&
NeedFrameFor(aParentFrame, childContent)) {
rv = TableProcessChild(aPresShell, aPresContext, aState, childContent,
aContent, aParentFrame,
parentFrameType, parentStyleContext,
aTableCreator, aChildItems, aCaption);
}
if (NS_FAILED(rv)) return rv;
}
// process the current pseudo frame state
if (!aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aChildItems);
}
// restore the incoming pseudo frame state
aState.mPseudoFrames = priorPseudoFrames;
return rv;
}
nsresult
nsCSSFrameConstructor::TableProcessChild(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aChildContent,
nsIContent* aParentContent,
nsIFrame* aParentFrame,
nsIAtom* aParentFrameType,
nsStyleContext* aParentStyleContext,
nsTableCreator& aTableCreator,
nsFrameItems& aChildItems,
nsIFrame*& aCaption)
{
nsresult rv = NS_OK;
PRBool childIsCaption = PR_FALSE;
PRBool isPseudoParent = PR_FALSE;
nsIFrame* childFrame = nsnull;
nsRefPtr<nsStyleContext> childStyleContext;
// Resolve the style context and get its display
childStyleContext = ResolveStyleContext(aPresContext, aParentFrame,
aChildContent);
switch (childStyleContext->GetStyleDisplay()->mDisplay) {
case NS_STYLE_DISPLAY_TABLE:
{
PRBool pageBreakAfter = PR_FALSE;
PRBool paginated;
aPresContext->IsPaginated(&paginated);
if (paginated) {
// See if there is a page break before, if so construct one. Also see if there is one after
pageBreakAfter = PageBreakBefore(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aChildItems);
}
// construct the table frame
nsIFrame* innerTableFrame;
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, aParentFrame, childStyleContext,
aTableCreator, PR_FALSE, aChildItems,
childFrame, innerTableFrame, isPseudoParent);
if (NS_SUCCEEDED(rv) && pageBreakAfter) {
// Construct the page break after
ConstructPageBreakFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aChildItems);
}
}
break;
case NS_STYLE_DISPLAY_TABLE_CAPTION:
if (!aCaption) { // only allow one caption
nsIFrame* parentFrame = GetOuterTableFrame(aParentFrame);
rv = ConstructTableCaptionFrame(aPresShell, aPresContext, aState, aChildContent,
parentFrame, childStyleContext, aTableCreator,
aChildItems, aCaption, isPseudoParent);
}
childIsCaption = PR_TRUE;
break;
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
rv = ConstructTableColGroupFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aTableCreator,
PR_FALSE, aChildItems, childFrame, isPseudoParent);
break;
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP:
rv = ConstructTableRowGroupFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aTableCreator,
PR_FALSE, aChildItems, childFrame, isPseudoParent);
break;
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aTableCreator,
PR_FALSE, aChildItems, childFrame, isPseudoParent);
break;
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aTableCreator,
PR_FALSE, aChildItems, childFrame, isPseudoParent);
break;
case NS_STYLE_DISPLAY_TABLE_CELL:
nsIFrame* innerCell;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aTableCreator, PR_FALSE,
aChildItems, childFrame, innerCell, isPseudoParent);
break;
case NS_STYLE_DISPLAY_NONE:
aState.mFrameManager->SetUndisplayedContent(aChildContent,
childStyleContext);
break;
default:
{
// if <form>'s parent is <tr>/<table>/<tbody>/<thead>/<tfoot> in html,
// NOT create psuedoframe for it.
// see bug 159359
nsINodeInfo *childNodeInfo = aChildContent->GetNodeInfo();
// Sometimes aChildContent is a #text node. In those cases it
// does not have a nodeinfo, and in those cases we want to
// construct a foreign frame for it in any case. So we can just
// null-check the nodeinfo here.
NS_ASSERTION(childNodeInfo ||
aChildContent->IsContentOfType(nsIContent::eTEXT),
"Non-#text nodes should have a nodeinfo here!");
if (aChildContent->IsContentOfType(nsIContent::eHTML) &&
childNodeInfo->Equals(nsHTMLAtoms::form) &&
aParentContent->IsContentOfType(nsIContent::eHTML)) {
nsINodeInfo *parentNodeInfo = aParentContent->GetNodeInfo();
if (parentNodeInfo->Equals(nsHTMLAtoms::table) ||
parentNodeInfo->Equals(nsHTMLAtoms::tr) ||
parentNodeInfo->Equals(nsHTMLAtoms::tbody) ||
parentNodeInfo->Equals(nsHTMLAtoms::thead) ||
parentNodeInfo->Equals(nsHTMLAtoms::tfoot)) {
break;
}
}
rv = ConstructTableForeignFrame(aPresShell, aPresContext, aState, aChildContent,
aParentFrame, childStyleContext, aTableCreator,
aChildItems, childFrame, isPseudoParent);
}
break;
}
// for every table related frame except captions and ones with pseudo parents,
// link into the child list
if (childFrame && !childIsCaption && !isPseudoParent) {
aChildItems.AddChild(childFrame);
}
return rv;
}
const nsStyleDisplay*
nsCSSFrameConstructor::GetDisplay(nsIFrame* aFrame)
{
if (nsnull == aFrame) {
return nsnull;
}
return aFrame->GetStyleContext()->GetStyleDisplay();
}
/***********************************************
* END TABLE SECTION
***********************************************/
nsresult
nsCSSFrameConstructor::ConstructDocElementTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aDocElement,
nsIFrame* aParentFrame,
nsIFrame*& aNewTableFrame,
nsILayoutHistoryState* aFrameState)
{
nsFrameConstructorState state(aPresContext, nsnull, nsnull, nsnull, aFrameState);
nsFrameItems frameItems;
ConstructFrame(aPresShell, aPresContext, state, aDocElement, aParentFrame, frameItems);
aNewTableFrame = frameItems.childList;
if (!aNewTableFrame) {
NS_WARNING("cannot get table contentFrame");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
/**
* New one
*/
nsresult
nsCSSFrameConstructor::ConstructDocElementFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aDocElement,
nsIFrame* aParentFrame,
nsStyleContext* aParentStyleContext,
nsIFrame*& aNewFrame)
{
// how the root frame hierarchy should look
/*
---------------No Scrollbars------
AreaFrame or BoxFrame (InitialContainingBlock)
---------------Gfx Scrollbars ------
GfxScrollFrame
^
|
ScrollPort
^
|
AreaFrame or BoxFrame (InitialContainingBlock)
*/
aNewFrame = nsnull;
if (!mTempFrameTreeState)
aPresShell->CaptureHistoryState(getter_AddRefs(mTempFrameTreeState));
// ----- reattach gfx scrollbars ------
// Gfx scrollframes were created in the root frame but the primary frame map may have been destroyed if a
// new style sheet was loaded so lets reattach the frames to their content.
if (mGfxScrollFrame) {
nsIFrame* scrollPort = nsnull;
mGfxScrollFrame->FirstChild(aPresContext, nsnull, &scrollPort);
nsIFrame* gfxScrollbarFrame1 = nsnull;
nsIFrame* gfxScrollbarFrame2 = nsnull;
gfxScrollbarFrame1 = scrollPort->GetNextSibling();
if (gfxScrollbarFrame1) {
// XXX This works, but why?
aState.mFrameManager->
SetPrimaryFrameFor(gfxScrollbarFrame1->GetContent(), gfxScrollbarFrame1);
gfxScrollbarFrame2 = gfxScrollbarFrame1->GetNextSibling();
if (gfxScrollbarFrame2) {
// XXX This works, but why?
aState.mFrameManager->
SetPrimaryFrameFor(gfxScrollbarFrame2->GetContent(), gfxScrollbarFrame2);
}
}
}
// --------- CREATE AREA OR BOX FRAME -------
nsRefPtr<nsStyleContext> styleContext;
styleContext = aPresContext->ResolveStyleContextFor(aDocElement,
aParentStyleContext);
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
// Ensure that our XBL bindings are installed.
if (display->mBinding) {
// Get the XBL loader.
nsresult rv;
PRBool resolveStyle;
nsCOMPtr<nsIXBLBinding> binding;
nsIXBLService * xblService = GetXBLService();
if (!xblService)
return NS_ERROR_FAILURE;
rv = xblService->LoadBindings(aDocElement, display->mBinding, PR_FALSE, getter_AddRefs(binding), &resolveStyle);
if (NS_FAILED(rv))
return NS_OK; // Binding will load asynchronously.
if (binding) {
nsIBindingManager *bm = mDocument->GetBindingManager();
if (bm)
bm->AddToAttachedQueue(binding);
}
if (resolveStyle) {
styleContext = ResolveStyleContext(aPresContext, aParentFrame,
aDocElement);
}
}
PRBool docElemIsTable = IsTableRelated(display->mDisplay, PR_FALSE);
// --------- IF SCROLLABLE WRAP IN SCROLLFRAME --------
PRBool isScrollable = IsScrollable(aPresContext, display);
PRBool isPaginated = PR_FALSE;
aPresContext->IsPaginated(&isPaginated);
nsCOMPtr<nsIPrintPreviewContext> printPreviewContext(do_QueryInterface(aPresContext));
nsIFrame* scrollFrame = nsnull;
// build a scrollframe
if ((!isPaginated || (isPaginated && printPreviewContext)) && isScrollable) {
nsIFrame* newScrollFrame = nsnull;
nsRefPtr<nsStyleContext> newContext;
newContext = BeginBuildingScrollFrame( aPresShell, aPresContext,
aState,
aDocElement,
styleContext,
aParentFrame,
nsnull,
nsCSSAnonBoxes::scrolledContent,
mDocument,
PR_FALSE,
scrollFrame,
newScrollFrame);
styleContext = newContext;
aParentFrame = newScrollFrame;
}
nsIFrame* contentFrame = nsnull;
PRBool isBlockFrame = PR_FALSE;
nsresult rv;
if (docElemIsTable) {
// if the document is a table then just populate it.
rv = ConstructDocElementTableFrame(aPresShell, aPresContext, aDocElement,
aParentFrame, contentFrame,
aState.mFrameState);
if (NS_FAILED(rv)) {
return rv;
}
styleContext = contentFrame->GetStyleContext();
} else {
// otherwise build a box or a block
#if defined(MOZ_SVG)
PRInt32 nameSpaceID;
#endif
#ifdef MOZ_XUL
if (aDocElement->IsContentOfType(nsIContent::eXUL)) {
rv = NS_NewDocElementBoxFrame(aPresShell, &contentFrame);
if (NS_FAILED(rv)) {
return rv;
}
}
else
#endif
#ifdef MOZ_SVG
if (NS_SUCCEEDED(aDocElement->GetNameSpaceID(&nameSpaceID)) &&
(nameSpaceID == kNameSpaceID_SVG)) {
rv = NS_NewSVGOuterSVGFrame(aPresShell, aDocElement, &contentFrame);
if (NS_FAILED(rv)) {
return rv;
}
isBlockFrame = PR_TRUE;
}
else
#endif
{
rv = NS_NewDocumentElementFrame(aPresShell, &contentFrame);
if (NS_FAILED(rv)) {
return rv;
}
isBlockFrame = PR_TRUE;
}
// initialize the child
InitAndRestoreFrame(aPresContext, aState, aDocElement,
aParentFrame, styleContext, nsnull, contentFrame);
}
// set the primary frame
aState.mFrameManager->SetPrimaryFrameFor(aDocElement, contentFrame);
// Finish building the scrollframe
if (isScrollable) {
FinishBuildingScrollFrame(aPresContext,
aState,
aDocElement,
aParentFrame,
contentFrame,
styleContext);
// primary is set above (to the contentFrame)
aNewFrame = scrollFrame;
} else {
// if not scrollable the new frame is the content frame.
aNewFrame = contentFrame;
}
mInitialContainingBlock = contentFrame;
// if it was a table then we don't need to process our children.
if (!docElemIsTable) {
// Process the child content
nsFrameConstructorSaveState absoluteSaveState;
nsFrameConstructorSaveState floatSaveState;
nsFrameItems childItems;
if (isBlockFrame) {
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aDocElement, styleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
aState.PushAbsoluteContainingBlock(aPresContext, contentFrame, absoluteSaveState);
aState.PushFloatContainingBlock(contentFrame, floatSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
}
// Create any anonymous frames the doc element frame requires
// This must happen before ProcessChildren to ensure that popups are
// never constructed before the popupset.
CreateAnonymousFrames(aPresShell, aPresContext, nsnull, aState, aDocElement, contentFrame,
PR_FALSE, childItems, PR_TRUE);
ProcessChildren(aPresShell, aPresContext, aState, aDocElement, contentFrame,
PR_TRUE, childItems, isBlockFrame);
// Set the initial child lists
contentFrame->SetInitialChildList(aPresContext, nsnull,
childItems.childList);
// only support absolute positioning if we are a block.
// if we are a box don't do it.
if (isBlockFrame) {
if (aState.mAbsoluteItems.childList) {
contentFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
contentFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ConstructRootFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aDocElement,
nsIFrame*& aNewFrame)
{
// how the root frame hierarchy should look
/*
---------------No Scrollbars------
ViewPortFrame (FixedContainingBlock) <---- RootView
^
|
RootFrame(DocElementContainingBlock)
---------------Gfx Scrollbars ------
ViewPortFrame (FixedContainingBlock) <---- RootView
^
|
GfxScrollFrame
^
|
ScrollPort <--- RootScrollableView
^
|
RootFrame(DocElementContainingBlock)
*/
// Set up our style rule observer.
nsIBindingManager *bindingManager = mDocument->GetBindingManager();
if (bindingManager) {
nsCOMPtr<nsIStyleRuleSupplier> ruleSupplier(do_QueryInterface(bindingManager));
nsCOMPtr<nsIStyleSet> set;
aPresShell->GetStyleSet(getter_AddRefs(set));
set->SetStyleRuleSupplier(ruleSupplier);
}
// --------- BUILD VIEWPORT -----------
nsIFrame* viewportFrame = nsnull;
nsRefPtr<nsStyleContext> viewportPseudoStyle;
viewportPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsCSSAnonBoxes::viewport,
nsnull);
NS_NewViewportFrame(aPresShell, &viewportFrame);
viewportFrame->Init(aPresContext, nsnull, nsnull, viewportPseudoStyle, nsnull);
// Bind the viewport frame to the root view
nsIViewManager* viewManager = aPresContext->GetViewManager();
nsIView* rootView;
viewManager->GetRootView(rootView);
viewportFrame->SetView(rootView);
nsContainerFrame::SyncFrameViewProperties(aPresContext, viewportFrame,
viewportPseudoStyle, rootView);
// The viewport is the containing block for 'fixed' elements
mFixedContainingBlock = viewportFrame;
// --------- CREATE ROOT FRAME -------
// Create the root frame. The document element's frame is a child of the
// root frame.
//
// The root frame serves two purposes:
// - reserves space for any margins needed for the document element's frame
// - renders the document element's background. This ensures the background covers
// the entire canvas as specified by the CSS2 spec
PRBool isPaginated = PR_FALSE;
aPresContext->IsPaginated(&isPaginated);
nsCOMPtr<nsIPrintPreviewContext> printPreviewContext(do_QueryInterface(aPresContext));
nsIFrame* rootFrame = nsnull;
nsIAtom* rootPseudo;
if (!isPaginated) {
#ifdef MOZ_XUL
if (aDocElement->IsContentOfType(nsIContent::eXUL))
{
NS_NewRootBoxFrame(aPresShell, &rootFrame);
} else
#endif
{
NS_NewCanvasFrame(aPresShell, &rootFrame);
}
rootPseudo = nsCSSAnonBoxes::canvas;
mDocElementContainingBlock = rootFrame;
} else {
// Create a page sequence frame
NS_NewSimplePageSequenceFrame(aPresShell, &rootFrame);
rootPseudo = nsCSSAnonBoxes::pageSequence;
}
// --------- IF SCROLLABLE WRAP IN SCROLLFRAME --------
// If the device supports scrolling (e.g., in galley mode on the screen and
// for print-preview, but not when printing), then create a scroll frame that
// will act as the scrolling mechanism for the viewport.
// XXX Do we even need a viewport when printing to a printer?
PRBool isScrollable = PR_TRUE;
//isScrollable = PR_FALSE;
// As long as the webshell doesn't prohibit it, and the device supports
// it, create a scroll frame that will act as the scolling mechanism for
// the viewport.
//
// Threre are three possible values stored in the docshell:
// 1) NS_STYLE_OVERFLOW_HIDDEN = no scrollbars
// 2) NS_STYLE_OVERFLOW_AUTO = scrollbars appear if needed
// 3) NS_STYLE_OVERFLOW_SCROLL = scrollbars always
// Only need to create a scroll frame/view for cases 2 and 3.
// Currently OVERFLOW_SCROLL isn't honored, as
// scrollportview::SetScrollPref is not implemented.
PRBool isHTML = aDocElement->IsContentOfType(nsIContent::eHTML);
PRBool isXUL = PR_FALSE;
if (!isHTML) {
isXUL = aDocElement->IsContentOfType(nsIContent::eXUL);
}
// Never create scrollbars for XUL documents
#ifdef MOZ_XUL
if (isXUL) {
isScrollable = PR_FALSE;
} else
#endif
{
nsresult rv;
nsCOMPtr<nsISupports> container;
if (nsnull != aPresContext) {
aPresContext->GetContainer(getter_AddRefs(container));
if (nsnull != container) {
nsCOMPtr<nsIScrollable> scrollableContainer = do_QueryInterface(container, &rv);
if (NS_SUCCEEDED(rv) && scrollableContainer) {
PRInt32 scrolling = -1;
// XXX We should get prefs for X and Y and deal with these independently!
scrollableContainer->GetCurrentScrollbarPreferences(nsIScrollable::ScrollOrientation_Y,&scrolling);
if (NS_STYLE_OVERFLOW_HIDDEN == scrolling) {
isScrollable = PR_FALSE;
}
// XXX NS_STYLE_OVERFLOW_SCROLL should create 'always on' scrollbars
}
}
}
}
if (isPaginated) {
if (printPreviewContext) { // print preview
aPresContext->GetPaginatedScrolling(&isScrollable);
} else {
isScrollable = PR_FALSE; // we are printing
}
}
// if scrolling is still supported, check for the style data on the HTML and BODY
// NOTE: the docElement in HTML will have a BODY child, and we have to check for
// no scrolling on that element as well as the docElement. Outside of HTML,
// we will not check the children of the docElement
if (isScrollable) {
NS_ASSERTION(!isXUL, "XUL documents should never be scrollable - see above");
// see if the style is overflow: hidden, first on the document element
nsRefPtr<nsStyleContext> styleContext;
styleContext = aPresContext->ResolveStyleContextFor(aDocElement, nsnull);
if (styleContext) {
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
if (display->mOverflow == NS_STYLE_OVERFLOW_HIDDEN ||
display->mOverflow == NS_STYLE_OVERFLOW_SCROLLBARS_NONE) {
isScrollable = PR_FALSE;
}
}
// if still scrollable, check the BODY element, but only if we are in an HTML document
if (isScrollable && isHTML) {
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc(do_QueryInterface(mDocument));
nsCOMPtr<nsIContent> bodyElement;
if (htmlDoc) {
nsCOMPtr<nsIDOMHTMLElement> body;
htmlDoc->GetBody(getter_AddRefs(body));
bodyElement = do_QueryInterface(body);
if (bodyElement &&
!bodyElement->GetNodeInfo()->Equals(nsHTMLAtoms::body)) {
// The body is not a <body> tag, it's a <frameset>.
bodyElement = nsnull;
}
}
if (bodyElement) {
nsRefPtr<nsStyleContext> bodyContext;
bodyContext = aPresContext->ResolveStyleContextFor(bodyElement,
styleContext);
if (bodyContext) {
const nsStyleDisplay* display = bodyContext->GetStyleDisplay();
if (display->mOverflow == NS_STYLE_OVERFLOW_HIDDEN ||
display->mOverflow == NS_STYLE_OVERFLOW_SCROLLBARS_NONE) {
isScrollable = PR_FALSE;
}
}
}
}
}
nsIFrame* newFrame = rootFrame;
nsRefPtr<nsStyleContext> rootPseudoStyle;
// we must create a state because if the scrollbars are GFX it needs the
// state to build the scrollbar frames.
nsFrameConstructorState state(aPresContext,
nsnull,
nsnull,
nsnull);
nsIFrame* parentFrame = viewportFrame;
// If paginated, make sure we don't put scrollbars in
if (isPaginated && !printPreviewContext)
rootPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
rootPseudo,
viewportPseudoStyle);
else if (isScrollable) {
// Build the frame. We give it the content we are wrapping which is the document,
// the root frame, the parent view port frame, and we should get back the new
// frame and the scrollable view if one was created.
// resolve a context for the scrollframe
nsRefPtr<nsStyleContext> styleContext;
styleContext = aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsCSSAnonBoxes::viewportScroll,
viewportPseudoStyle);
nsIFrame* newScrollableFrame = nsnull;
newFrame = nsnull;
rootPseudoStyle = BeginBuildingScrollFrame( aPresShell,
aPresContext,
state,
aDocElement,
styleContext,
viewportFrame,
nsnull,
rootPseudo,
mDocument,
PR_TRUE,
newFrame,
newScrollableFrame);
// Inform the view manager about the root scrollable view
nsIView* view = newScrollableFrame->GetView();
NS_ENSURE_TRUE(view, NS_ERROR_FAILURE);
nsIScrollableView* scrollableView = nsnull;
NS_ENSURE_SUCCESS(CallQueryInterface(view, &scrollableView), NS_ERROR_FAILURE);
viewManager->SetRootScrollableView(scrollableView);
parentFrame = newScrollableFrame;
mGfxScrollFrame = newFrame;
} else {
// If no scrollbars and xul, don't build a scrollframe at all.
if (isXUL) {
rootPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
rootPseudo,
viewportPseudoStyle);
} else {
// if HTML the always create a scrollframe so anchors work. That way you can scroll to
// anchors even if we don't have scrollbars.
// create a style context for the scrollport of the viewport
nsRefPtr<nsStyleContext> scrollPseudoStyle;
scrollPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsCSSAnonBoxes::scrolledContent,
viewportPseudoStyle);
// create scrollframe
nsIFrame* scrollFrame = nsnull;
NS_NewScrollPortFrame(aPresShell, &scrollFrame);
NS_ENSURE_TRUE(scrollFrame, NS_ERROR_FAILURE);
scrollFrame->Init(aPresContext, nsnull, parentFrame, scrollPseudoStyle, nsnull);
// resolve a new style for the root frame
rootPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
rootPseudo,
scrollPseudoStyle);
// Inform the view manager about the root scrollable view
nsIView* view = scrollFrame->GetView();
NS_ENSURE_TRUE(view, NS_ERROR_FAILURE);
nsIScrollableView* scrollableView = nsnull;
NS_ENSURE_SUCCESS(CallQueryInterface(view, &scrollableView), NS_ERROR_FAILURE);
viewManager->SetRootScrollableView(scrollableView);
parentFrame = scrollFrame;
newFrame = scrollFrame;
}
}
rootFrame->Init(aPresContext, aDocElement, parentFrame,
rootPseudoStyle, nsnull);
if (!isPaginated || (isPaginated && printPreviewContext)) {
if (isScrollable) {
FinishBuildingScrollFrame(aPresContext,
state,
aDocElement,
parentFrame,
rootFrame,
rootPseudoStyle);
// set the primary frame to the root frame
state.mFrameManager->SetPrimaryFrameFor(aDocElement, rootFrame);
} else { // if not scrollable
if (!isXUL) { // if not XUL
parentFrame->SetInitialChildList(aPresContext, nsnull, rootFrame);
}
}
}
if (isPaginated) { // paginated
// Create the first page
// Set the initial child lists
nsIFrame *pageFrame, *pageContentFrame;
ConstructPageFrame(aPresShell, aPresContext, rootFrame, nsnull,
pageFrame, pageContentFrame);
rootFrame->SetInitialChildList(aPresContext, nsnull, pageFrame);
// The eventual parent of the document element frame.
// XXX should this be set for every new page (in ConstructPageFrame)?
mDocElementContainingBlock = pageContentFrame;
}
viewportFrame->SetInitialChildList(aPresContext, nsnull, newFrame);
aNewFrame = viewportFrame;
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ConstructPageFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIFrame* aPrevPageFrame,
nsIFrame*& aPageFrame,
nsIFrame*& aPageContentFrame)
{
nsresult rv = NS_OK;
rv = NS_NewPageFrame(aPresShell, &aPageFrame);
if (NS_FAILED(rv))
return rv;
nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext();
nsRefPtr<nsStyleContext> pagePseudoStyle;
pagePseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsCSSAnonBoxes::page,
parentStyleContext);
// Initialize the page frame and force it to have a view. This makes printing of
// the pages easier and faster.
aPageFrame->Init(aPresContext, nsnull, aParentFrame, pagePseudoStyle, aPrevPageFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
rv = nsHTMLContainerFrame::CreateViewForFrame(aPageFrame, nsnull, PR_TRUE);
if (NS_FAILED(rv))
return NS_ERROR_NULL_POINTER;
NS_NewPageContentFrame(aPresShell, &aPageContentFrame);
nsRefPtr<nsStyleContext> pageContentPseudoStyle;
pageContentPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsCSSAnonBoxes::pageContent,
pagePseudoStyle);
// Initialize the page content frame and force it to have a view. Also make it the
// containing block for fixed elements which are repeated on every page.
aPageContentFrame->Init(aPresContext, nsnull, aPageFrame, pageContentPseudoStyle, nsnull);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aPageContentFrame, nsnull, PR_TRUE);
if (NS_FAILED(rv))
return NS_ERROR_NULL_POINTER;
mFixedContainingBlock = aPageContentFrame;
aPageFrame->SetInitialChildList(aPresContext, nsnull, aPageContentFrame);
// Fixed pos kids are taken care of directly in CreateContinuingFrame()
return rv;
}
nsresult
nsCSSFrameConstructor::CreatePlaceholderFrameFor(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIContent* aContent,
nsIFrame* aFrame,
nsStyleContext* aStyleContext,
nsIFrame* aParentFrame,
nsIFrame** aPlaceholderFrame)
{
nsPlaceholderFrame* placeholderFrame;
nsresult rv = NS_NewPlaceholderFrame(aPresShell, (nsIFrame**)&placeholderFrame);
if (NS_SUCCEEDED(rv)) {
// The placeholder frame gets a pseudo style context
nsRefPtr<nsStyleContext> placeholderStyle;
nsStyleContext* parentContext = aStyleContext->GetParent();
placeholderStyle = aPresContext->ResolveStyleContextForNonElement(parentContext);
placeholderFrame->Init(aPresContext, aContent, aParentFrame,
placeholderStyle, nsnull);
// The placeholder frame has a pointer back to the out-of-flow frame
placeholderFrame->SetOutOfFlowFrame(aFrame);
aFrame->AddStateBits(NS_FRAME_OUT_OF_FLOW);
// Add mapping from absolutely positioned frame to its placeholder frame
aFrameManager->RegisterPlaceholderFrame(placeholderFrame);
*aPlaceholderFrame = NS_STATIC_CAST(nsIFrame*, placeholderFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructRadioControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame,
nsIContent* aContent,
nsStyleContext* aStyleContext)
{
nsresult rv = NS_NewGfxRadioControlFrame(aPresShell, &aNewFrame);
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
return rv;
}
nsRefPtr<nsStyleContext> radioStyle;
radioStyle = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::radio,
aStyleContext);
nsIRadioControlFrame* radio = nsnull;
if (aNewFrame != nsnull && NS_SUCCEEDED(aNewFrame->QueryInterface(NS_GET_IID(nsIRadioControlFrame), (void**)&radio))) {
radio->SetRadioButtonFaceStyleContext(radioStyle);
NS_RELEASE(radio);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructCheckboxControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame,
nsIContent* aContent,
nsStyleContext* aStyleContext)
{
nsresult rv = NS_NewGfxCheckboxControlFrame(aPresShell, &aNewFrame);
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
return rv;
}
nsRefPtr<nsStyleContext> checkboxStyle;
checkboxStyle = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::check,
aStyleContext);
nsICheckboxControlFrame* checkbox = nsnull;
if (aNewFrame != nsnull &&
NS_SUCCEEDED(aNewFrame->QueryInterface(NS_GET_IID(nsICheckboxControlFrame), (void**)&checkbox))) {
checkbox->SetCheckboxFaceStyleContext(checkboxStyle);
NS_RELEASE(checkbox);
}
return rv;
}
PRBool
nsCSSFrameConstructor::UseXBLForms()
{
if (!mGotXBLFormPrefs) {
nsCOMPtr<nsIPrefBranch> prefBranch(do_GetService(NS_PREFSERVICE_CONTRACTID));
if (prefBranch) {
PRBool useXBLForms = PR_FALSE; // use a temp since we have a PRPackedBool
prefBranch->GetBoolPref("nglayout.debug.enable_xbl_forms", &useXBLForms);
mUseXBLForms = useXBLForms;
mGotXBLFormPrefs = PR_TRUE;
}
}
return mUseXBLForms;
}
nsresult
nsCSSFrameConstructor::ConstructSelectFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
PRBool& aProcessChildren,
PRBool aIsAbsolutelyPositioned,
PRBool& aFrameHasBeenInitialized,
PRBool aIsFixedPositioned,
nsFrameItems& aFrameItems)
{
nsresult rv = NS_OK;
const PRInt32 kNoSizeSpecified = -1;
// Construct a frame-based listbox or combobox
nsCOMPtr<nsIDOMHTMLSelectElement> sel(do_QueryInterface(aContent));
PRInt32 size = 1;
if (sel) {
sel->GetSize(&size);
PRBool multipleSelect = PR_FALSE;
sel->GetMultiple(&multipleSelect);
// Construct a combobox if size=1 or no size is specified and its multiple select
if (((1 == size || 0 == size) || (kNoSizeSpecified == size)) && (PR_FALSE == multipleSelect)) {
// Construct a frame-based combo box.
// The frame-based combo box is built out of tree parts. A display area, a button and
// a dropdown list. The display area and button are created through anonymous content.
// The drop-down list's frame is created explicitly. The combobox frame shares it's content
// with the drop-down list.
PRUint32 flags = NS_BLOCK_SHRINK_WRAP |
((aIsAbsolutelyPositioned | aIsFixedPositioned)?NS_BLOCK_SPACE_MGR:0);
nsIFrame * comboboxFrame;
rv = NS_NewComboboxControlFrame(aPresShell, &comboboxFrame, flags);
// Determine geometric parent for the combobox frame
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
// Save the history state so we don't restore during construction
// since the complete tree is required before we restore.
nsILayoutHistoryState *historyState = aState.mFrameState;
aState.mFrameState = nsnull;
// Initialize the combobox frame
InitAndRestoreFrame(aPresContext, aState, aContent, geometricParent,
aStyleContext, nsnull, comboboxFrame);
nsHTMLContainerFrame::CreateViewForFrame(comboboxFrame, aParentFrame, PR_FALSE);
///////////////////////////////////////////////////////////////////
// Combobox - Old Native Implementation
///////////////////////////////////////////////////////////////////
nsIComboboxControlFrame* comboBox = nsnull;
CallQueryInterface(comboboxFrame, &comboBox);
NS_ASSERTION(comboBox, "NS_NewComboboxControlFrame returned frame that "
"doesn't implement nsIComboboxControlFrame");
comboBox->SetFrameConstructor(this);
// Create a listbox
nsIFrame * listFrame;
rv = NS_NewListControlFrame(aPresShell, &listFrame);
// Notify the listbox that it is being used as a dropdown list.
nsIListControlFrame * listControlFrame;
rv = CallQueryInterface(listFrame, &listControlFrame);
if (NS_SUCCEEDED(rv)) {
listControlFrame->SetComboboxFrame(comboboxFrame);
}
// Notify combobox that it should use the listbox as it's popup
comboBox->SetDropDown(listFrame);
// Resolve psuedo element style for the dropdown list
nsRefPtr<nsStyleContext> listStyle;
listStyle = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::dropDownList,
aStyleContext);
// Initialize the scroll frame positioned. Note that it is NOT
// initialized as absolutely positioned.
nsIFrame* newFrame = nsnull;
nsIFrame* scrolledFrame = nsnull;
NS_NewSelectsAreaFrame(aPresShell, &scrolledFrame, flags);
// make sure any existing anonymous content is cleared out. Gfx scroll frame construction
// should reset it to just be the anonymous scrollbars, but we don't want to depend
// on that.
aPresShell->SetAnonymousContentFor(aContent, nsnull);
InitializeSelectFrame(aPresShell, aPresContext, aState, listFrame, scrolledFrame, aContent, comboboxFrame,
listStyle, PR_FALSE, PR_FALSE, PR_TRUE);
newFrame = listFrame;
// XXX Temporary for Bug 19416
{
nsIView* lstView = scrolledFrame->GetView();
if (lstView) {
lstView->IgnoreSetPosition(PR_TRUE);
}
}
// Set flag so the events go to the listFrame not child frames.
// XXX: We should replace this with a real widget manager similar
// to how the nsFormControlFrame works. Re-directing events is a temporary Kludge.
NS_ASSERTION(listFrame->GetView(), "ListFrame's view is nsnull");
//listFrame->GetView()->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN);
// Create display and button frames from the combobox's anonymous content.
// The anonymous content is appended to existing anonymous content for this
// element (the scrollbars).
nsFrameItems childItems;
CreateAnonymousFrames(aPresShell, aPresContext, nsHTMLAtoms::combobox,
aState, aContent, comboboxFrame, PR_TRUE, childItems);
comboboxFrame->SetInitialChildList(aPresContext, nsnull,
childItems.childList);
// Initialize the additional popup child list which contains the
// dropdown list frame.
nsFrameItems popupItems;
popupItems.AddChild(listFrame);
comboboxFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::popupList,
popupItems.childList);
// Don't process, the children, They are already processed by the
// InitializeScrollFrame call above.
aProcessChildren = PR_FALSE;
aNewFrame = comboboxFrame;
aFrameHasBeenInitialized = PR_TRUE;
aState.mFrameState = historyState;
if (aState.mFrameState && aState.mFrameManager) {
// Restore frame state for the entire subtree of |comboboxFrame|.
aState.mFrameManager->RestoreFrameState(comboboxFrame,
aState.mFrameState);
}
} else {
///////////////////////////////////////////////////////////////////
// ListBox - Old Native Implementation
///////////////////////////////////////////////////////////////////
nsIFrame * listFrame;
rv = NS_NewListControlFrame(aPresShell, &listFrame);
aNewFrame = listFrame;
PRUint32 flags = NS_BLOCK_SHRINK_WRAP |
((aIsAbsolutelyPositioned | aIsFixedPositioned)?NS_BLOCK_SPACE_MGR:0);
nsIFrame* scrolledFrame = nsnull;
NS_NewSelectsAreaFrame(aPresShell, &scrolledFrame, flags);
// ******* this code stolen from Initialze ScrollFrame ********
// please adjust this code to use BuildScrollFrame.
InitializeSelectFrame(aPresShell, aPresContext, aState, listFrame, scrolledFrame, aContent, aParentFrame,
aStyleContext, aIsAbsolutelyPositioned, aIsFixedPositioned, PR_FALSE);
aNewFrame = listFrame;
aFrameHasBeenInitialized = PR_TRUE;
}
}
return rv;
}
/**
* Used to be InitializeScrollFrame but now its only used for the select tag
* But the select tag should really be fixed to use GFX scrollbars that can
* be create with BuildScrollFrame.
*/
nsresult
nsCSSFrameConstructor::InitializeSelectFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* scrollFrame,
nsIFrame* scrolledFrame,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
PRBool aIsAbsolutelyPositioned,
PRBool aIsFixedPositioned,
PRBool aBuildCombobox)
{
// Initialize it
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
// We don't call InitAndRestoreFrame for scrollFrame because we can only
// restore the frame state after its parts have been created (in particular,
// the scrollable view). So we have to split Init and Restore.
// Initialize the frame
scrollFrame->Init(aPresContext, aContent, geometricParent, aStyleContext, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(scrollFrame, aParentFrame,
aBuildCombobox);
if (aBuildCombobox) {
// Give the drop-down list a popup widget
nsIView* view = scrollFrame->GetView();
NS_ASSERTION(view, "We asked for a view but didn't get one");
if (view) {
view->GetViewManager()->SetViewFloating(view, PR_TRUE);
nsWidgetInitData widgetData;
widgetData.mWindowType = eWindowType_popup;
widgetData.mBorderStyle = eBorderStyle_default;
#if defined(XP_MAC) || defined(XP_MACOSX)
static NS_DEFINE_IID(kCPopUpCID, NS_POPUP_CID);
view->CreateWidget(kCPopUpCID, &widgetData, nsnull);
#else
static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
view->CreateWidget(kCChildCID, &widgetData, nsnull);
#endif
}
}
nsStyleContext* scrolledPseudoStyle;
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext,
scrolledFrame, geometricParent, aParentFrame, scrollFrame,
scrolledPseudoStyle);
if (aState.mFrameState && aState.mFrameManager) {
// Restore frame state for the scroll frame
aState.mFrameManager->RestoreFrameStateFor(scrollFrame, aState.mFrameState);
}
// The area frame is a float container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floatSaveState;
aState.PushFloatContainingBlock(scrolledFrame, floatSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
PRBool isPositionedContainingBlock = aIsAbsolutelyPositioned ||
aIsFixedPositioned ||
display->mPosition == NS_STYLE_POSITION_RELATIVE;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(aPresContext, scrolledFrame, absoluteSaveState);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, scrolledFrame, PR_FALSE,
childItems, PR_TRUE);
// if a select is being created with zero options we need to create
// a special pseudo frame so it can be sized as best it can
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
nsresult result = aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
AddDummyFrameToSelect(aPresContext, aPresShell, aState,
scrollFrame, scrolledFrame, &childItems,
aContent, selectElement);
}
//////////////////////////////////////////////////
//////////////////////////////////////////////////
// Set the scrolled frame's initial child lists
scrolledFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (isPositionedContainingBlock && aState.mAbsoluteItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
return NS_OK;
}
nsresult
nsCSSFrameConstructor::ConstructFieldSetFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
PRBool& aProcessChildren,
PRBool aIsAbsolutelyPositioned,
PRBool& aFrameHasBeenInitialized,
PRBool aIsFixedPositioned)
{
nsIFrame * newFrame;
nsresult rv = NS_NewFieldSetFrame(aPresShell, &newFrame, NS_BLOCK_SPACE_MGR);
if (NS_FAILED(rv)) {
return rv;
}
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
// Initialize it
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// See if we need to create a view, e.g. the frame is absolutely
// positioned
nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE);
nsIFrame* areaFrame;
NS_NewAreaFrame(shell, &areaFrame, NS_BLOCK_SPACE_MGR | NS_BLOCK_SHRINK_WRAP);
// Resolve style and initialize the frame
nsRefPtr<nsStyleContext> styleContext;
styleContext = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::fieldsetContent,
aStyleContext);
InitAndRestoreFrame(aPresContext, aState, aContent,
newFrame, styleContext, nsnull, areaFrame);
// The area frame is a float container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floatSaveState;
aState.PushFloatContainingBlock(areaFrame, floatSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
PRBool isPositionedContainingBlock = aIsAbsolutelyPositioned ||
aIsFixedPositioned ||
display->mPosition == NS_STYLE_POSITION_RELATIVE;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(aPresContext, areaFrame, absoluteSaveState);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, areaFrame, PR_FALSE,
childItems, PR_TRUE);
static NS_DEFINE_IID(kLegendFrameCID, NS_LEGEND_FRAME_CID);
nsIFrame * child = childItems.childList;
nsIFrame * previous = nsnull;
nsIFrame* legendFrame = nsnull;
while (nsnull != child) {
nsresult result = child->QueryInterface(kLegendFrameCID, (void**)&legendFrame);
if (NS_SUCCEEDED(result) && legendFrame) {
if (nsnull != previous) {
previous->SetNextSibling(legendFrame->GetNextSibling());
areaFrame->SetNextSibling(legendFrame);
legendFrame->SetParent(newFrame);
legendFrame->SetNextSibling(nsnull);
break;
} else {
childItems.childList = legendFrame->GetNextSibling();
areaFrame->SetNextSibling(legendFrame);
legendFrame->SetParent(newFrame);
legendFrame->SetNextSibling(nsnull);
break;
}
}
previous = child;
child = child->GetNextSibling();
}
// Set the scrolled frame's initial child lists
areaFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (isPositionedContainingBlock && aState.mAbsoluteItems.childList) {
areaFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
areaFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
// Set the scroll frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, areaFrame);
// our new frame retured is the top frame which is the list frame.
aNewFrame = newFrame;
// yes we have already initialized our frame
aFrameHasBeenInitialized = PR_TRUE;
return NS_OK;
}
nsresult
nsCSSFrameConstructor::ConstructTextFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
// process pending pseudo frames. whitespace doesn't have an effect.
if (!aState.mPseudoFrames.IsEmpty() && !IsOnlyWhiteSpace(aContent))
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
nsIFrame* newFrame = nsnull;
nsresult rv = NS_NewTextFrame(aPresShell, &newFrame);
if (NS_FAILED(rv) || !newFrame)
return rv;
// Set the frame state bit for text frames to mark them as replaced.
// XXX kipp: temporary
newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT);
InitAndRestoreFrame(aPresContext, aState, aContent, aParentFrame,
aStyleContext, nsnull, newFrame);
// We never need to create a view for a text frame.
// Set the frame's initial child list to null.
newFrame->SetInitialChildList(aPresContext, nsnull, nsnull);
// Add the newly constructed frame to the flow
aFrameItems.AddChild(newFrame);
// Text frames don't go in the content->frame hash table, because
// they're anonymous. This keeps the hash table smaller
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructHTMLFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
PRInt32 aNameSpaceID,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
// Ignore the tag if it's not HTML content
if (!aContent->IsContentOfType(nsIContent::eHTML)) {
return NS_OK;
}
PRBool processChildren = PR_FALSE; // whether we should process child content
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isFloating = PR_FALSE;
PRBool isRelativePositioned = PR_FALSE;
PRBool canBePositioned = PR_TRUE;
PRBool frameHasBeenInitialized = PR_FALSE;
nsIFrame* newFrame = nsnull; // the frame we construct
PRBool isReplaced = PR_FALSE;
PRBool addToHashTable = PR_TRUE;
PRBool isFloatContainer = PR_FALSE;
PRBool isPositionedContainingBlock = PR_FALSE;
nsresult rv = NS_OK;
// See if the element is absolute or fixed positioned
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
if (NS_STYLE_POSITION_ABSOLUTE == display->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
}
else if (NS_STYLE_POSITION_FIXED == display->mPosition) {
isFixedPositioned = PR_TRUE;
}
else {
if (NS_STYLE_FLOAT_NONE != display->mFloats) {
isFloating = PR_TRUE;
}
if (NS_STYLE_POSITION_RELATIVE == display->mPosition) {
isRelativePositioned = PR_TRUE;
}
}
// Create a frame based on the tag
if (nsHTMLAtoms::img == aTag) {
isReplaced = PR_TRUE;
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// XXX If image display is turned off, then use ConstructAlternateFrame()
// instead...
rv = NS_NewImageFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::br == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
rv = NS_NewBRFrame(aPresShell, &newFrame);
isReplaced = PR_TRUE;
// BR frames don't go in the content->frame hash table: typically
// there are many BR content objects and this would increase the size
// of the hash table, and it's doubtful we need the mapping anyway
addToHashTable = PR_FALSE;
}
else if (nsHTMLAtoms::wbr == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
rv = NS_NewWBRFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::input == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
rv = CreateInputFrame(aPresShell, aPresContext,
aContent, newFrame, aStyleContext);
}
else if (nsHTMLAtoms::textarea == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
rv = NS_NewTextControlFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::select == aTag) {
if (!UseXBLForms()) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
rv = ConstructSelectFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aStyleContext, newFrame, processChildren,
isAbsolutelyPositioned, frameHasBeenInitialized,
isFixedPositioned, aFrameItems);
}
}
else if (nsHTMLAtoms::object == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(aPresShell, &newFrame);
processChildren = PR_FALSE;
}
else if (nsHTMLAtoms::applet == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::embed == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::fieldset == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
#define DO_NEWFIELDSET
#ifdef DO_NEWFIELDSET
rv = ConstructFieldSetFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aStyleContext, newFrame, processChildren,
isAbsolutelyPositioned, frameHasBeenInitialized,
isFixedPositioned);
processChildren = PR_FALSE;
#else
rv = NS_NewFieldSetFrame(aPresShell, &newFrame, isAbsolutelyPositioned ? NS_BLOCK_SPACE_MGR : 0);
processChildren = PR_TRUE;
#endif
}
else if (nsHTMLAtoms::legend == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
rv = NS_NewLegendFrame(aPresShell, &newFrame);
processChildren = PR_TRUE;
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::frameset == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
canBePositioned = PR_FALSE;
PRBool allowSubframes = PR_TRUE;
if (aPresContext) {
nsCOMPtr<nsISupports> container;
aPresContext->GetContainer(getter_AddRefs(container));
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (docShell) {
docShell->GetAllowSubframes(&allowSubframes);
}
}
if (allowSubframes) {
rv = NS_NewHTMLFramesetFrame(aPresShell, &newFrame);
}
}
else if (nsHTMLAtoms::iframe == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
PRBool allowSubframes = PR_TRUE;
if (aPresContext) {
nsCOMPtr<nsISupports> container;
aPresContext->GetContainer(getter_AddRefs(container));
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (docShell) {
docShell->GetAllowSubframes(&allowSubframes);
}
}
if (allowSubframes) {
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
if (newFrame) {
// the nsFrameOuterFrame needs to know about its content parent during ::Init.
// there is no reasonable way to get the value there.
// so we store it as a frame property.
nsCOMPtr<nsIAtom> contentParentAtom = do_GetAtom("contentParent");
aState.mFrameManager->SetFrameProperty(newFrame,
contentParentAtom,
aParentFrame, nsnull);
}
}
}
else if (nsHTMLAtoms::noframes == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
PRBool allowSubframes = PR_TRUE;
if (aPresContext) {
nsCOMPtr<nsISupports> container;
aPresContext->GetContainer(getter_AddRefs(container));
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (docShell) {
docShell->GetAllowSubframes(&allowSubframes);
}
}
if (allowSubframes) {
// make <noframes> be display:none if frames are enabled
nsStyleDisplay* mutdisplay = (nsStyleDisplay*)aStyleContext->GetUniqueStyleData(aPresContext, eStyleStruct_Display);
mutdisplay->mDisplay = NS_STYLE_DISPLAY_NONE;
aState.mFrameManager->SetUndisplayedContent(aContent, aStyleContext);
}
else {
processChildren = PR_TRUE;
rv = NS_NewBlockFrame(aPresShell, &newFrame);
}
}
else if (nsHTMLAtoms::spacer == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
rv = NS_NewSpacerFrame(aPresShell, &newFrame);
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::button == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
rv = NS_NewHTMLButtonControlFrame(aPresShell, &newFrame);
// the html4 button needs to act just like a
// regular button except contain html content
// so it must be replaced or html outside it will
// draw into its borders. -EDV
isReplaced = PR_TRUE;
processChildren = PR_TRUE;
}
else if (nsHTMLAtoms::isindex == aTag) {
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
isReplaced = PR_TRUE;
rv = NS_NewIsIndexFrame(aPresShell, &newFrame);
}
if (NS_FAILED(rv) || !newFrame)
return rv;
// If we succeeded in creating a frame then initialize it, process its
// children (if requested), and set the initial child list
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT);
}
if (!frameHasBeenInitialized) {
nsIFrame* geometricParent = aParentFrame;
// Makes sure we use the correct parent frame pointer when initializing
// the frame
if (isFloating) {
geometricParent = aState.mFloatedItems.containingBlock;
} else if (canBePositioned) {
if (isAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (isFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
}
rv = InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
if (rv == NS_ERROR_FRAME_REPLACED) {
// The frame called CantRenderReplacedElement from inside Init(). That
// failed to do anything useful, since the frame was not in the frame
// tree yet... Create an alternate frame ourselves
newFrame->Destroy(aPresContext);
if (aTag != nsHTMLAtoms::img && aTag != nsHTMLAtoms::input) {
// XXXbz This should really be made to work for <object> too...
return NS_OK;
}
// Try to construct the alternate frame
newFrame = nsnull;
rv = ConstructAlternateFrame(aPresShell, aPresContext, aContent,
aStyleContext, geometricParent,
aParentFrame, newFrame);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(newFrame, "ConstructAlternateFrame needs better error-checking");
} else {
NS_ASSERTION(NS_SUCCEEDED(rv), "InitAndRestoreFrame failed");
// See if we need to create a view, e.g. the frame is absolutely
// positioned
nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE);
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
nsFrameConstructorSaveState absoluteSaveState;
aState.PushAbsoluteContainingBlock(aPresContext, newFrame, absoluteSaveState);
// Process the child frames
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_TRUE, childItems, PR_FALSE);
// Set the frame's absolute list if there were any absolutely positioned children
if (aState.mAbsoluteItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
}
else if (isFloatContainer) {
// If the frame can contain floats, then push a float
// containing block
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floatSaveState;
aState.PushFloatContainingBlock(newFrame, floatSaveState,
PR_FALSE, PR_FALSE);
// Process the child frames
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_TRUE, childItems, PR_FALSE);
// Set the frame's float list if there were any floated children
if (aState.mFloatedItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
} else {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_TRUE, childItems, PR_FALSE);
}
}
// if there are any anonymous children create frames for them
CreateAnonymousFrames(aPresShell, aPresContext, aTag, aState, aContent, newFrame,
PR_FALSE, childItems);
// Set the frame's initial child list
if (childItems.childList) {
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
}
}
// If the frame is positioned, then create a placeholder frame
if (canBePositioned && (isAbsolutelyPositioned || isFixedPositioned)) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent,
newFrame, aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of
// child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else if (isFloating) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, aParentFrame, &placeholderFrame);
// Add the floating frame to its containing block's list of child frames
aState.mFloatedItems.AddChild(newFrame);
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else {
// Handle :before/:after for leaf elements. For now (XXX bug), just
// don't create any generated content if the element in question is
// floating or positioned, since that's *hard* (TM). It requires the
// display data in the style context go to the wrapper and the rest go
// to the frame inside.
// See also bug 141289.
if (!processChildren) {
nsIFrame *wrapperFrame = nsnull, *beforeFrame, *afterFrame;
if (!CreateGeneratedContentFrame(aPresShell, aPresContext,
aState, aParentFrame, aContent,
aStyleContext,
nsCSSPseudoElements::before,
&wrapperFrame, &beforeFrame)) {
beforeFrame = nsnull;
}
if (!CreateGeneratedContentFrame(aPresShell, aPresContext,
aState, aParentFrame, aContent,
aStyleContext,
nsCSSPseudoElements::after,
&wrapperFrame, &afterFrame)) {
afterFrame = nsnull;
}
NS_ASSERTION(!(beforeFrame || afterFrame) == !wrapperFrame,
"should get wrapper iff GC");
if (wrapperFrame) {
// OK, we have generated content for a leaf.
// This means |CreateGeneratedContentFrame| created a wrapper
// frame to hold the generated content and the leaf frame. We now
// need to link everything together.
NS_ASSERTION(!newFrame->GetNextSibling(),
"must not have sibling");
NS_ASSERTION(!beforeFrame || !beforeFrame->GetNextSibling(),
"must not have sibling");
NS_ASSERTION(!afterFrame || !afterFrame->GetNextSibling(),
"must not have sibling");
nsIFrame *firstChild = newFrame;
if (beforeFrame) {
beforeFrame->SetNextSibling(newFrame);
firstChild = beforeFrame;
}
newFrame->SetNextSibling(afterFrame);
newFrame->SetParent(wrapperFrame);
wrapperFrame->SetInitialChildList(aPresContext, nsnull, firstChild);
// From now on, pretend the wrapper frame is the real frame.
newFrame = wrapperFrame;
}
}
// Add the newly constructed frame to the flow
aFrameItems.AddChild(newFrame);
}
if (addToHashTable) {
// Add a mapping from content object to primary frame. Note that for
// floated and positioned frames this is the out-of-flow frame and not
// the placeholder frame
aState.mFrameManager->SetPrimaryFrameFor(aContent, newFrame);
}
return rv;
}
// after the node has been constructed and initialized create any
// anonymous content a node needs.
static void
LocateAnonymousFrame(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aTargetContent,
nsIFrame** aResult)
{
// We may be a placeholder. If we are, go to the real frame.
aParentFrame = GetRealFrame(aParentFrame);
// Check ourselves.
*aResult = nsnull;
if (aParentFrame->GetContent() == aTargetContent) {
// We must take into account if the parent is a scrollframe. If it is, we
// need to bypass the scrolling mechanics and get at the true frame.
nsCOMPtr<nsIScrollableFrame> scrollFrame ( do_QueryInterface(aParentFrame) );
if ( scrollFrame )
scrollFrame->GetScrolledFrame ( aPresContext, *aResult );
else
*aResult = aParentFrame;
return;
}
// Check our kids.
nsIFrame* currFrame;
aParentFrame->FirstChild(aPresContext, nsnull, &currFrame);
while (currFrame) {
LocateAnonymousFrame(aPresContext, currFrame, aTargetContent, aResult);
if (*aResult)
return;
currFrame = currFrame->GetNextSibling();
}
nsCOMPtr<nsIMenuFrame> menuFrame(do_QueryInterface(aParentFrame));
if (menuFrame) {
nsIFrame* popupChild;
menuFrame->GetMenuChild(&popupChild);
if (popupChild) {
LocateAnonymousFrame(aPresContext, popupChild, aTargetContent, aResult);
if (*aResult)
return;
}
}
}
nsresult
nsCSSFrameConstructor::CreateAnonymousFrames(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIAtom* aTag,
nsFrameConstructorState& aState,
nsIContent* aParent,
nsIFrame* aNewFrame,
PRBool aAppendToExisting,
nsFrameItems& aChildItems,
PRBool aIsRoot)
{
// See if we might have anonymous content
// by looking at the tag rather than doing a QueryInterface on
// the frame. Only these tags' frames can have anonymous content
// through nsIAnonymousContentCreator. We do this check for
// performance reasons. If we did a QueryInterface on every tag it
// would be inefficient.
// nsGenericElement::SetDocument ought to keep a list like this one,
// but it can't because nsGfxScrollFrames get around this.
if (!aIsRoot &&
aTag != nsHTMLAtoms::input &&
aTag != nsHTMLAtoms::textarea &&
aTag != nsHTMLAtoms::combobox &&
aTag != nsHTMLAtoms::isindex &&
aTag != nsXULAtoms::scrollbar
)
return NS_OK;
return CreateAnonymousFrames(aPresShell, aPresContext, aState, aParent,
mDocument, aNewFrame, aAppendToExisting, aChildItems);
}
// after the node has been constructed and initialized create any
// anonymous content a node needs.
nsresult
nsCSSFrameConstructor::CreateAnonymousFrames(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aParent,
nsIDocument* aDocument,
nsIFrame* aParentFrame,
PRBool aAppendToExisting,
nsFrameItems& aChildItems)
{
nsCOMPtr<nsIAnonymousContentCreator> creator(do_QueryInterface(aParentFrame));
if (!creator)
return NS_OK;
nsCOMPtr<nsISupportsArray> anonymousItems;
NS_NewISupportsArray(getter_AddRefs(anonymousItems));
creator->CreateAnonymousContent(aPresContext, *anonymousItems);
PRUint32 count = 0;
anonymousItems->Count(&count);
if (count) {
// A content element can have multiple sources of anonymous content. For example,
// SELECTs have a combobox dropdown button and also scrollbars in the list view.
// nsPresShell doesn't handle this very well. It's a problem because a reframe could
// cause anonymous content from one source to be destroyed and recreated while
// (in theory) leaving the rest intact, but the presshell doesn't have a way of tracking
// the anonymous content at that granularity.
// So what we're doing right now is wiping out existing content whenever we get new
// anonymous content, except for the one case we care about where there are multiple
// sources (SELECTs). This case is handled by having SELECT initialization tell us
// explicitly not to wipe out the scrollbars when the combobox anonymous content is
// added.
// Note that we only wipe out existing content when there is actual new content.
// Otherwise we wipe out scrollbars and other anonymous content when we check sources
// that never provide anonymous content (e.g. the call to CreateAnonymousFrames
// from ConstructBlock).
// What we SHOULD do is get rid of the presshell's need to track anonymous
// content. It's only used for cleanup as far as I can tell.
if (!aAppendToExisting) {
aPresShell->SetAnonymousContentFor(aParent, nsnull);
}
// Inform the pres shell about the anonymous content
aPresShell->SetAnonymousContentFor(aParent, anonymousItems);
for (PRUint32 i=0; i < count; i++) {
// get our child's content and set its parent to our content
nsCOMPtr<nsIContent> content;
if (NS_FAILED(anonymousItems->QueryElementAt(i, NS_GET_IID(nsIContent), getter_AddRefs(content))))
continue;
content->SetNativeAnonymous(PR_TRUE);
content->SetParent(aParent);
content->SetDocument(aDocument, PR_TRUE, PR_TRUE);
#ifdef MOZ_XUL
// Only cut XUL scrollbars off if they're not in a XUL document. This allows
// scrollbars to be styled from XUL (although not from XML or HTML).
nsCOMPtr<nsIAtom> tag;
content->GetTag(getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::scrollbar) {
nsCOMPtr<nsIDOMXULDocument> xulDoc(do_QueryInterface(aDocument));
if (xulDoc)
content->SetBindingParent(aParent);
else content->SetBindingParent(content);
}
else
#endif
content->SetBindingParent(content);
nsIFrame * newFrame = nsnull;
nsresult rv = creator->CreateFrameFor(aPresContext, content, &newFrame);
if (NS_SUCCEEDED(rv) && newFrame != nsnull) {
aChildItems.AddChild(newFrame);
}
else {
// create the frame and attach it to our frame
ConstructFrame(aPresShell, aPresContext, aState, content, aParentFrame, aChildItems);
}
creator->PostCreateFrames();
}
}
return NS_OK;
}
static
PRBool IsXULDisplayType(const nsStyleDisplay* aDisplay)
{
return (aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_BOX ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_GRID ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_INLINE_STACK ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_BOX ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_STACK ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID_GROUP ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_GRID_LINE ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_DECK ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_POPUP ||
aDisplay->mDisplay == NS_STYLE_DISPLAY_GROUPBOX
);
}
nsresult
nsCSSFrameConstructor::ConstructXULFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
PRInt32 aNameSpaceID,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems,
PRBool aXBLBaseTag,
PRBool& aHaltProcessing)
{
PRBool primaryFrameSet = PR_FALSE;
PRBool processChildren = PR_FALSE; // whether we should process child content
PRBool processAnonymousChildren = PR_FALSE; // whether or not we process anonymous content.
nsresult rv = NS_OK;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isPopup = PR_FALSE;
PRBool isReplaced = PR_FALSE;
PRBool frameHasBeenInitialized = PR_FALSE;
// this is the new frame that will be created
nsIFrame* newFrame = nsnull;
// this is the also the new frame that is created. But if a scroll frame is needed
// the content will be mapped to the scrollframe and topFrame will point to it.
// newFrame will still point to the child that we created like a "div" for example.
nsIFrame* topFrame = nsnull;
NS_ASSERTION(aTag != nsnull, "null XUL tag");
if (aTag == nsnull)
return NS_OK;
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
PRBool isXULNS = (aNameSpaceID == kNameSpaceID_XUL);
PRBool isXULDisplay = IsXULDisplayType(display);
if (isXULNS || isXULDisplay) {
// See if the element is absolutely positioned
if (NS_STYLE_POSITION_ABSOLUTE == display->mPosition)
isAbsolutelyPositioned = PR_TRUE;
if (isXULNS) {
// First try creating a frame based on the tag
#ifdef MOZ_XUL
// BUTTON CONSTRUCTION
if (aTag == nsXULAtoms::button || aTag == nsXULAtoms::checkbox || aTag == nsXULAtoms::radio) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewButtonBoxFrame(aPresShell, &newFrame);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of BUTTON CONSTRUCTION logic
// AUTOREPEATBUTTON CONSTRUCTION
else if (aTag == nsXULAtoms::autorepeatbutton) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewAutoRepeatBoxFrame(aPresShell, &newFrame);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of AUTOREPEATBUTTON CONSTRUCTION logic
// TITLEBAR CONSTRUCTION
else if (aTag == nsXULAtoms::titlebar) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTitleBarFrame(aPresShell, &newFrame);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of TITLEBAR CONSTRUCTION logic
// RESIZER CONSTRUCTION
else if (aTag == nsXULAtoms::resizer) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewResizerFrame(aPresShell, &newFrame);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of RESIZER CONSTRUCTION logic
else if (aTag == nsXULAtoms::image) {
isReplaced = PR_TRUE;
rv = NS_NewImageBoxFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::spring ||
aTag == nsHTMLAtoms::spacer) {
isReplaced = PR_TRUE;
rv = NS_NewSpringFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::treechildren) {
isReplaced = PR_TRUE;
rv = NS_NewTreeBodyFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::treecol) {
isReplaced = PR_TRUE;
processChildren = PR_TRUE;
rv = NS_NewTreeColFrame(aPresShell, &newFrame);
}
// TEXT CONSTRUCTION
else if (aTag == nsXULAtoms::text || aTag == nsHTMLAtoms::label ||
aTag == nsXULAtoms::description) {
if ((aTag == nsHTMLAtoms::label || aTag == nsXULAtoms::description) &&
(! aContent->HasAttr(kNameSpaceID_None, nsHTMLAtoms::value))) {
processChildren = PR_TRUE;
rv = NS_NewAreaFrame(aPresShell, &newFrame,
NS_BLOCK_SPACE_MGR | NS_BLOCK_SHRINK_WRAP | NS_BLOCK_MARGIN_ROOT);
}
else {
isReplaced = PR_TRUE;
rv = NS_NewTextBoxFrame(aPresShell, &newFrame);
}
}
// End of TEXT CONSTRUCTION logic
// Menu Construction
else if (aTag == nsXULAtoms::menu ||
aTag == nsXULAtoms::menuitem ||
aTag == nsXULAtoms::menubutton) {
// A derived class box frame
// that has custom reflow to prevent menu children
// from becoming part of the flow.
processChildren = PR_TRUE; // Will need this to be custom.
isReplaced = PR_TRUE;
rv = NS_NewMenuFrame(aPresShell, &newFrame, (aTag != nsXULAtoms::menuitem));
((nsMenuFrame*) newFrame)->SetFrameConstructor(this);
}
else if (aTag == nsXULAtoms::menubar) {
#if defined(XP_MAC) || defined(XP_MACOSX) // The Mac uses its native menu bar.
aHaltProcessing = PR_TRUE;
return NS_OK;
#else
processChildren = PR_TRUE;
rv = NS_NewMenuBarFrame(aPresShell, &newFrame);
#endif
}
else if (aTag == nsXULAtoms::popupgroup) {
// This frame contains child popups
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewPopupSetFrame(aPresShell, &newFrame);
((nsPopupSetFrame*) newFrame)->SetFrameConstructor(this);
}
else if (aTag == nsXULAtoms::scrollbox) {
rv = NS_NewScrollBoxFrame(aPresShell, &newFrame);
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
}
else if (aTag == nsXULAtoms::iframe || aTag == nsXULAtoms::editor ||
aTag == nsXULAtoms::browser) {
isReplaced = PR_TRUE;
// XXX should turning off frames allow XUL iframes?
PRBool allowSubframes = PR_TRUE;
if (aPresContext) {
nsCOMPtr<nsISupports> container;
aPresContext->GetContainer(getter_AddRefs(container));
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
if (docShell) {
docShell->GetAllowSubframes(&allowSubframes);
}
}
if (allowSubframes) {
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
}
// PROGRESS METER CONSTRUCTION
else if (aTag == nsXULAtoms::progressmeter) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewProgressMeterFrame(aPresShell, &newFrame);
}
// End of PROGRESS METER CONSTRUCTION logic
else
#endif
// SLIDER CONSTRUCTION
if (aTag == nsXULAtoms::slider) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewSliderFrame(aPresShell, &newFrame);
}
// End of SLIDER CONSTRUCTION logic
// SCROLLBAR CONSTRUCTION
else if (aTag == nsXULAtoms::scrollbar) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewScrollbarFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::nativescrollbar) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewNativeScrollbarFrame(aPresShell, &newFrame);
}
// End of SCROLLBAR CONSTRUCTION logic
// SCROLLBUTTON CONSTRUCTION
else if (aTag == nsXULAtoms::scrollbarbutton) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewScrollbarButtonFrame(aPresShell, &newFrame);
}
// End of SCROLLBUTTON CONSTRUCTION logic
#ifdef MOZ_XUL
// SPLITTER CONSTRUCTION
else if (aTag == nsXULAtoms::splitter) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewSplitterFrame(aPresShell, &newFrame);
}
// End of SPLITTER CONSTRUCTION logic
// GRIPPY CONSTRUCTION
else if (aTag == nsXULAtoms::grippy) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewGrippyFrame(aPresShell, &newFrame);
}
// End of GRIPPY CONSTRUCTION logic
#endif
}
// Display types for XUL start here
// First is BOX
if (!newFrame && isXULDisplay) {
if (display->mDisplay == NS_STYLE_DISPLAY_INLINE_BOX ||
display->mDisplay == NS_STYLE_DISPLAY_BOX) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewBoxFrame(aPresShell, &newFrame, PR_FALSE, nsnull);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of BOX CONSTRUCTION logic
#ifdef MOZ_XUL
// ------- Begin Grid ---------
else if ((!aXBLBaseTag && (display->mDisplay == NS_STYLE_DISPLAY_INLINE_GRID ||
display->mDisplay == NS_STYLE_DISPLAY_GRID)) ||
aTag == nsXULAtoms::grid) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
nsCOMPtr<nsIBoxLayout> layout;
NS_NewGridLayout2(aPresShell, getter_AddRefs(layout));
rv = NS_NewBoxFrame(aPresShell, &newFrame, PR_FALSE, layout);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} //------- End Grid ------
// ------- Begin Rows/Columns ---------
else if (display->mDisplay == NS_STYLE_DISPLAY_GRID_GROUP) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
nsCOMPtr<nsIBoxLayout> layout;
PRBool listboxScrollPort = PR_FALSE;
if (aTag == nsXULAtoms::listboxbody) {
NS_NewListBoxLayout(aPresShell, layout);
rv = NS_NewListBoxBodyFrame(aPresShell, &newFrame, PR_FALSE, layout);
((nsListBoxBodyFrame*)newFrame)->InitGroup(this, aPresContext);
listboxScrollPort = PR_TRUE;
processChildren = PR_FALSE;
}
else
{
NS_NewGridRowGroupLayout(aPresShell, getter_AddRefs(layout));
rv = NS_NewGridRowGroupFrame(aPresShell, &newFrame, PR_FALSE, layout);
}
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
nsIFrame* scrollPort = nsnull;
if (listboxScrollPort) {
NS_NewListBoxScrollPortFrame(aPresShell, &scrollPort);
}
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext, scrollPort);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} //------- End Grid ------
// ------- Begin Row/Column ---------
else if (display->mDisplay == NS_STYLE_DISPLAY_GRID_LINE) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
nsCOMPtr<nsIBoxLayout> layout;
NS_NewGridRowLeafLayout(aPresShell, getter_AddRefs(layout));
if (aTag == nsXULAtoms::listitem)
rv = NS_NewListItemFrame(aPresShell, &newFrame, PR_FALSE, layout);
else
rv = NS_NewGridRowLeafFrame(aPresShell, &newFrame, PR_FALSE, layout);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} //------- End Grid ------
// End of STACK CONSTRUCTION logic
// DECK CONSTRUCTION
else if (display->mDisplay == NS_STYLE_DISPLAY_DECK) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewDeckFrame(aPresShell, &newFrame);
}
// End of DECK CONSTRUCTION logic
else if (display->mDisplay == NS_STYLE_DISPLAY_GROUPBOX) {
rv = NS_NewGroupBoxFrame(aPresShell, &newFrame);
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
// STACK CONSTRUCTION
else if (display->mDisplay == NS_STYLE_DISPLAY_STACK ||
display->mDisplay == NS_STYLE_DISPLAY_INLINE_STACK) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewStackFrame(aPresShell, &newFrame);
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent,
aStyleContext, newFrame, aParentFrame, nsnull,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
aParentFrame = newFrame->GetParent();
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
else if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) {
// This is its own frame that derives from
// box.
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewMenuPopupFrame(aPresShell, &newFrame);
if (aTag == nsXULAtoms::tooltip) {
nsAutoString defaultTooltip;
aContent->GetAttr(kNameSpaceID_None, nsXULAtoms::defaultz, defaultTooltip);
if (defaultTooltip.EqualsIgnoreCase("true")) {
// Locate the root frame and tell it about the tooltip.
nsIFrame* rootFrame = nsnull;
aState.mFrameManager->GetRootFrame(&rootFrame);
if (rootFrame)
rootFrame->FirstChild(aPresContext, nsnull, &rootFrame);
nsCOMPtr<nsIRootBox> rootBox(do_QueryInterface(rootFrame));
if (rootBox)
rootBox->SetDefaultTooltip(aContent);
}
}
// If a popup is inside a menu, then the menu understands the complex
// rules/behavior governing the cascade of multiple menu popups and can handle
// having the real popup frame placed under it as a child.
// If, however, the parent is *not* a menu frame, then we need to create
// a placeholder frame for the popup, and then we add the popup frame to the
// root popup set (that manages all such "detached" popups).
nsCOMPtr<nsIMenuFrame> menuFrame(do_QueryInterface(aParentFrame));
if (!menuFrame)
isPopup = PR_TRUE;
}
#endif
}
}
// If we succeeded in creating a frame then initialize it, process its
// children (if requested), and set the initial child list
if (NS_SUCCEEDED(rv) && newFrame != nsnull) {
// if no top frame was created then the top is the new frame
if (topFrame == nsnull)
topFrame = newFrame;
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT);
}
// xul does not support absolute positioning
nsIFrame* geometricParent = aParentFrame;
/*
nsIFrame* geometricParent = isAbsolutelyPositioned
? aState.mAbsoluteItems.containingBlock
: aParentFrame;
*/
// if the new frame was already initialized to initialize it again.
if (!frameHasBeenInitialized) {
rv = InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
NS_ENSURE_SUCCESS(rv,rv);
/*
// if our parent is a block frame then do things the way html likes it
// if not then we are in a box so do what boxes like. On example is boxes
// do not support the absolute positioning of their children. While html blocks
// thats why we call different things here.
nsCOMPtr<nsIAtom> frameType;
geometricParent->GetFrameType(getter_AddRefs(frameType));
if ((frameType.get() == nsLayoutAtoms::blockFrame) ||
(frameType.get() == nsLayoutAtoms::areaFrame)) {
*/
// See if we need to create a view, e.g. the frame is absolutely positioned
nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE);
/*
} else {
// we are in a box so do the box thing.
nsBoxFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
}
*/
}
// Process the child content if requested
if (processChildren || processAnonymousChildren) {
nsFrameItems childItems;
if (processChildren) {
mDocument->GetBindingManager()->ShouldBuildChildFrames(aContent,
&processChildren);
if (processChildren)
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent,
newFrame, PR_FALSE, childItems, PR_FALSE);
}
CreateAnonymousFrames(aPresShell, aPresContext, aTag, aState, aContent,
newFrame, PR_FALSE, childItems);
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
// If the frame is absolutely positioned, then create a placeholder frame
if (isAbsolutelyPositioned || isFixedPositioned || isPopup) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent,
newFrame, aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else if (isFixedPositioned) {
aState.mFixedItems.AddChild(newFrame);
}
#ifdef MOZ_XUL
else if (isPopup) {
// Locate the root popup set and add ourselves to the popup set's list
// of popup frames.
nsIFrame* rootFrame;
aState.mFrameManager->GetRootFrame(&rootFrame);
if (rootFrame)
rootFrame->FirstChild(aPresContext, nsnull, &rootFrame);
nsCOMPtr<nsIRootBox> rootBox(do_QueryInterface(rootFrame));
NS_ASSERTION(rootBox, "unexpected null pointer");
if (rootBox) {
nsIFrame* popupSetFrame;
rootBox->GetPopupSetFrame(&popupSetFrame);
NS_ASSERTION(popupSetFrame, "unexpected null pointer");
if (popupSetFrame) {
nsCOMPtr<nsIPopupSetFrame> popupSet(do_QueryInterface(popupSetFrame));
NS_ASSERTION(popupSet, "unexpected null pointer");
if (popupSet)
popupSet->AddPopupFrame(newFrame);
}
}
}
#endif
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
}
else
// Add the new frame to our list of frame items.
aFrameItems.AddChild(topFrame);
}
#ifdef MOZ_XUL
// register tooltip support if needed
nsAutoString value;
if (aTag == nsXULAtoms::treechildren || // trees always need titletips
aContent->GetAttr(kNameSpaceID_None, nsXULAtoms::tooltiptext, value) !=
NS_CONTENT_ATTR_NOT_THERE ||
aContent->GetAttr(kNameSpaceID_None, nsXULAtoms::tooltip, value) !=
NS_CONTENT_ATTR_NOT_THERE)
{
nsIFrame* rootFrame = nsnull;
aState.mFrameManager->GetRootFrame(&rootFrame);
if (rootFrame)
rootFrame->FirstChild(aPresContext, nsnull, &rootFrame);
nsCOMPtr<nsIRootBox> rootBox(do_QueryInterface(rootFrame));
if (rootBox)
rootBox->AddTooltipSupport(aContent);
}
#endif
// addToHashTable:
if (topFrame) {
// the top frame is always what we map the content to. This is the frame that contains a pointer
// to the content node.
// Add a mapping from content object to primary frame. Note that for
// floated and positioned frames this is the out-of-flow frame and not
// the placeholder frame
if (!primaryFrameSet)
aState.mFrameManager->SetPrimaryFrameFor(aContent, topFrame);
}
return rv;
}
already_AddRefed<nsStyleContext>
nsCSSFrameConstructor::BeginBuildingScrollFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsStyleContext* aContentStyle,
nsIFrame* aParentFrame,
nsIFrame* aContentParentFrame,
nsIAtom* aScrolledPseudo,
nsIDocument* aDocument,
PRBool aIsRoot,
nsIFrame*& aNewFrame,
nsIFrame*& aScrollableFrame,
nsIFrame* aScrollPortFrame)
{
// Check to see the type of parent frame so we know whether we need to
// turn off/on scaling for the scrollbars
//
// If the parent is a viewportFrame then we are the scrollbars for the UI
// if not then we are scrollbars inside the document.
PRBool noScalingOfTwips = PR_FALSE;
nsCOMPtr<nsIPrintPreviewContext> printPreviewContext(do_QueryInterface(aPresContext));
if (printPreviewContext) {
nsCOMPtr<nsIAtom> typeAtom;
aParentFrame->GetFrameType(getter_AddRefs(typeAtom));
noScalingOfTwips = typeAtom == nsLayoutAtoms::viewportFrame;
if (noScalingOfTwips) {
printPreviewContext->SetScalingOfTwips(PR_FALSE);
}
}
nsIFrame* scrollFrame = nsnull;
nsIFrame* parentFrame = nsnull;
nsIFrame* gfxScrollFrame = aNewFrame;
nsFrameItems anonymousItems;
nsRefPtr<nsStyleContext> contentStyle = aContentStyle;
if (!gfxScrollFrame) {
NS_NewGfxScrollFrame(aPresShell, &gfxScrollFrame, aDocument, aIsRoot);
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, contentStyle, nsnull, gfxScrollFrame);
// Create a view
nsHTMLContainerFrame::CreateViewForFrame(gfxScrollFrame,
aContentParentFrame, PR_FALSE);
}
InitGfxScrollFrame(aPresShell, aPresContext, aState, aContent, aDocument,
aParentFrame, aContentParentFrame, contentStyle,
aIsRoot, gfxScrollFrame, anonymousItems, aScrollPortFrame);
scrollFrame = anonymousItems.childList; // get the scrollport from the anonymous list
parentFrame = gfxScrollFrame;
aNewFrame = gfxScrollFrame;
// we used the style that was passed in. So resolve another one.
nsRefPtr<nsStyleContext> scrollPseudoStyle;
scrollPseudoStyle = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::scrolledContent,
contentStyle);
contentStyle = scrollPseudoStyle;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, contentStyle, nsnull, scrollFrame);
nsStyleContext* aScrolledChildStyle = aPresContext->ResolvePseudoStyleContextFor(aContent,
aScrolledPseudo,
contentStyle).get();
aScrollableFrame = scrollFrame;
// set the child frame for the gfxscrollbar if the is one. This frames will be the
// 2 scrollbars and the scrolled frame.
if (gfxScrollFrame) {
gfxScrollFrame->SetInitialChildList(aPresContext, nsnull, anonymousItems.childList);
}
if (printPreviewContext && noScalingOfTwips) {
printPreviewContext->SetScalingOfTwips(PR_TRUE);
}
return aScrolledChildStyle;;
}
nsresult
nsCSSFrameConstructor::FinishBuildingScrollFrame(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aScrollFrame,
nsIFrame* aScrolledFrame,
nsStyleContext* aScrolledContentStyle)
{
// create a view
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aScrolledFrame, nsnull, PR_TRUE);
// the the scroll frames child list
aScrollFrame->SetInitialChildList(aPresContext, nsnull, aScrolledFrame);
return NS_OK;
}
/**
* Called to wrap a scrollframe or gfx scrollframe around a frame. The hierarchy will look like this
*
* ------ for native scrollbars -----
*
*
* ScrollFrame
* ^
* |
* Frame (scrolled frame you passed in)
*
*
* ------- for gfx scrollbars ------
*
*
* GfxScrollFrame
* ^
* |
* ScrollPort
* ^
* |
* Frame (scrolled frame you passed in)
*
*
*-----------------------------------
* LEGEND:
*
* ScrollFrame: This is a frame that has a view that manages native scrollbars. It implements
* nsIScrollableView. It also manages clipping and scrolling of native widgets by
* having a native scrolling window.
*
* GfxScrollFrame: This is a frame that manages gfx cross platform frame based scrollbars.
*
* ScrollPort: This is similar to the ScrollFrame above in that is clips and scrolls its children
* with a native scrolling window. But because it is contained in a GfxScrollFrame
* it does not have any code to do scrollbars so it is much simpler. Infact it only has
* 1 view attached to it. Where the ScrollFrame above has 5!
*
*
* @param aContent the content node of the child to wrap.
* @param aScrolledFrame The frame of the content to wrap. This should not be
* Initialized. This method will initialize it with a scrolled pseudo
* and no nsIContent. The content will be attached to the scrollframe
* returned.
* @param aContentStyle the style context that has already been resolved for the content being passed in.
*
* @param aParentFrame The parent to attach the scroll frame to
*
* @param aNewFrame The new scrollframe or gfx scrollframe that we create. It will contain the
* scrolled frame you passed in. (returned)
* If this is not null, we'll just use it
* @param aScrolledContentStyle the style that was resolved for the scrolled frame. (returned)
*/
nsresult
nsCSSFrameConstructor::BuildScrollFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsStyleContext* aContentStyle,
nsIFrame* aScrolledFrame,
nsIFrame* aParentFrame,
nsIFrame* aContentParentFrame,
nsIFrame*& aNewFrame,
nsStyleContext*& aScrolledContentStyle,
nsIFrame* aScrollPortFrame)
{
// Check to see the type of parent frame so we know whether we need to
// turn off/on scaling for the scrollbars
//
// If the parent is a viewportFrame then we are the scrollbars for the UI
// if not then we are scrollbars inside the document.
PRBool noScalingOfTwips = PR_FALSE;
nsCOMPtr<nsIPrintPreviewContext> printPreviewContext(do_QueryInterface(aPresContext));
if (printPreviewContext) {
nsCOMPtr<nsIAtom> typeAtom;
aParentFrame->GetFrameType(getter_AddRefs(typeAtom));
noScalingOfTwips = typeAtom == nsLayoutAtoms::viewportFrame;
if (noScalingOfTwips) {
printPreviewContext->SetScalingOfTwips(PR_FALSE);
}
}
nsIFrame *scrollFrame;
nsRefPtr<nsStyleContext> scrolledContentStyle;
scrolledContentStyle = BeginBuildingScrollFrame(aPresShell, aPresContext,
aState,
aContent,
aContentStyle,
aParentFrame,
aContentParentFrame,
nsCSSAnonBoxes::scrolledContent,
mDocument,
PR_FALSE,
aNewFrame,
scrollFrame,
aScrollPortFrame);
InitAndRestoreFrame(aPresContext, aState, aContent,
scrollFrame, scrolledContentStyle, nsnull, aScrolledFrame);
FinishBuildingScrollFrame(aPresContext,
aState,
aContent,
scrollFrame,
aScrolledFrame,
scrolledContentStyle);
aScrolledContentStyle = scrolledContentStyle;
// now set the primary frame to the ScrollFrame
aState.mFrameManager->SetPrimaryFrameFor( aContent, aNewFrame );
if (noScalingOfTwips) {
printPreviewContext->SetScalingOfTwips(PR_TRUE);
}
return NS_OK;
}
/**
* If we are building GFX scrollframes this will create one
* if aNewFrame gets a frame passed in, we'll use it instead
* of creating a new frame
*/
nsresult
nsCSSFrameConstructor::InitGfxScrollFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIDocument* aDocument,
nsIFrame* aParentFrame,
nsIFrame* aContentParentFrame,
nsStyleContext* aStyleContext,
PRBool aIsRoot,
nsIFrame*& aNewFrame,
nsFrameItems& aAnonymousFrames,
nsIFrame* aScrollPortFrame)
{
if (!aScrollPortFrame)
NS_NewScrollPortFrame(aPresShell, &aScrollPortFrame);
aAnonymousFrames.AddChild(aScrollPortFrame);
// if there are any anonymous children for the nsGfxScrollFrame create frames for them.
CreateAnonymousFrames(aPresShell, aPresContext, aState, aContent, aDocument, aNewFrame,
PR_FALSE, aAnonymousFrames);
return NS_OK;
}
nsresult
nsCSSFrameConstructor::ConstructFrameByDisplayType(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
PRInt32 aNameSpaceID,
nsIAtom* aTag,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
PRBool primaryFrameSet = PR_FALSE;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
nsIFrame* newFrame = nsnull; // the frame we construct
nsIFrame* newBlock = nsnull;
nsIFrame* nextInline = nsnull;
nsTableCreator tableCreator(aPresShell); // Used to make table frames.
PRBool addToHashTable = PR_TRUE;
PRBool pseudoParent = PR_FALSE; // is the new frame's parent anonymous
nsresult rv = NS_OK;
PRBool addNewFrameToChildList = PR_TRUE;
// The style system ensures that floated and positioned frames are
// block-level.
NS_ASSERTION(!(aDisplay->IsFloating() ||
aDisplay->IsAbsolutelyPositioned()) ||
aDisplay->IsBlockLevel(),
"Style system did not apply CSS2.1 section 9.7 fixups");
nsIFrame* adjParentFrame = aParentFrame;
// if the new frame is not table related and the parent is a table, row group, or row,
// then we need to get or create the pseudo table cell frame and use it as the parent.
if (adjParentFrame) {
nsCOMPtr<nsIAtom> parentType;
adjParentFrame->GetFrameType(getter_AddRefs(parentType));
if (!IsTableRelated(aDisplay->mDisplay, PR_TRUE) &&
IsTableRelated(parentType.get(), PR_FALSE) &&
aTag != nsHTMLAtoms::form) {
GetPseudoCellFrame(aPresShell, aPresContext, tableCreator, aState, *adjParentFrame);
if (aState.mPseudoFrames.mCellInner.mFrame) {
adjParentFrame = aState.mPseudoFrames.mCellInner.mFrame;
pseudoParent = PR_TRUE;
}
else {
return NS_ERROR_FAILURE;
}
}
}
// If the frame is a block-level frame and is scrollable, then wrap it
// in a scroll frame.
// XXX Ignore tables for the time being
if (aDisplay->IsBlockLevel() &&
aDisplay->mDisplay != NS_STYLE_DISPLAY_TABLE &&
IsScrollable(aPresContext, aDisplay)) {
if (!pseudoParent && !aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// See if it's absolute positioned or fixed positioned
if (NS_STYLE_POSITION_ABSOLUTE == aDisplay->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
} else if (NS_STYLE_POSITION_FIXED == aDisplay->mPosition) {
isFixedPositioned = PR_TRUE;
}
// Initialize it
nsIFrame* geometricParent = adjParentFrame;
if (isAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (isFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
nsIFrame* scrolledFrame = nsnull;
NS_NewAreaFrame(aPresShell, &scrolledFrame, NS_BLOCK_SPACE_MGR |
NS_BLOCK_SHRINK_WRAP | NS_BLOCK_MARGIN_ROOT);
nsStyleContext* newStyle;
// Build the scrollframe it
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext,
scrolledFrame, geometricParent, adjParentFrame, newFrame, newStyle);
// buildscrollframe sets the primary frame.
primaryFrameSet = PR_TRUE;
//-----
// The area frame is a float container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floatSaveState;
aState.PushFloatContainingBlock(scrolledFrame, floatSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
PRBool isPositionedContainingBlock = isAbsolutelyPositioned ||
isFixedPositioned ||
aDisplay->mPosition == NS_STYLE_POSITION_RELATIVE;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(aPresContext, scrolledFrame, absoluteSaveState);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, scrolledFrame, PR_TRUE,
childItems, PR_TRUE);
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
CreateAnonymousFrames(aPresShell, aPresContext, tag, aState, aContent, newFrame,
PR_FALSE, childItems);
// Set the scrolled frame's initial child lists
scrolledFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (isPositionedContainingBlock && aState.mAbsoluteItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
///------
}
// See if the frame is absolute or fixed positioned
else if (aDisplay->IsAbsolutelyPositioned() &&
(NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay ||
NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay)) {
if (!pseudoParent && !aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
if (NS_STYLE_POSITION_ABSOLUTE == aDisplay->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
} else {
isFixedPositioned = PR_TRUE;
}
// Create a frame to wrap up the absolute positioned item
NS_NewAbsoluteItemWrapperFrame(aPresShell, &newFrame);
InitAndRestoreFrame(aPresContext, aState, aContent,
(isAbsolutelyPositioned
? aState.mAbsoluteItems.containingBlock
: aState.mFixedItems.containingBlock),
aStyleContext, nsnull, newFrame);
// Create a view
nsHTMLContainerFrame::CreateViewForFrame(newFrame, adjParentFrame, PR_FALSE);
// Process the child content. The area frame becomes a container for child
// frames that are absolutely positioned
nsFrameConstructorSaveState absoluteSaveState;
nsFrameConstructorSaveState floatSaveState;
nsFrameItems childItems;
PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE;
if (aDisplay->IsBlockLevel()) {
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
}
aState.PushAbsoluteContainingBlock(aPresContext, newFrame, absoluteSaveState);
aState.PushFloatContainingBlock(newFrame, floatSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, PR_TRUE);
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
CreateAnonymousFrames(aPresShell, aPresContext, tag, aState, aContent, newFrame,
PR_FALSE, childItems);
// Set the frame's initial child list(s)
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mAbsoluteItems.childList) {
newFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
}
// See if the frame is floated and it's a block frame
else if (aDisplay->IsFloating() &&
(NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay ||
NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay)) {
if (!pseudoParent && !aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// Create an area frame
NS_NewFloatingItemWrapperFrame(aPresShell, &newFrame);
ConstructBlock(aPresShell, aPresContext, aState, aDisplay, aContent,
aState.mFloatedItems.containingBlock, adjParentFrame,
aStyleContext, newFrame,
aDisplay->mPosition == NS_STYLE_POSITION_RELATIVE);
}
// See if it's relatively positioned
else if ((NS_STYLE_POSITION_RELATIVE == aDisplay->mPosition) &&
((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) {
if (!pseudoParent && !aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// Is it block-level or inline-level?
if ((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay)) {
// Create a wrapper frame. No space manager, though
NS_NewRelativeItemWrapperFrame(aPresShell, &newFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
ConstructBlock(aPresShell, aPresContext, aState, aDisplay, aContent,
adjParentFrame, nsnull, aStyleContext, newFrame, PR_TRUE);
} else {
// Create a positioned inline frame
NS_NewPositionedInlineFrame(aPresShell, &newFrame);
ConstructInline(aPresShell, aPresContext, aState, aDisplay, aContent,
adjParentFrame, aStyleContext, PR_TRUE, newFrame,
&newBlock, &nextInline);
}
}
// See if it's a block frame of some sort
else if ((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_RUN_IN == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_COMPACT == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE_BLOCK == aDisplay->mDisplay)) {
if (!pseudoParent && !aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// Create the block frame
rv = NS_NewBlockFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) { // That worked so construct the block and its children
nsPseudoFrames savePseudo;
aState.mPseudoFrames.Reset(&savePseudo);
// XXXbz should we be passing in a non-null aContentParentFrame?
rv = ConstructBlock(aPresShell, aPresContext, aState, aDisplay, aContent,
adjParentFrame, nsnull, aStyleContext, newFrame,
PR_FALSE);
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
aState.mPseudoFrames = savePseudo;
}
}
// See if it's an inline frame of some sort
else if ((NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_MARKER == aDisplay->mDisplay)) {
if (!pseudoParent && !aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// Create the inline frame
rv = NS_NewInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) { // That worked so construct the inline and its children
nsPseudoFrames savePseudo;
aState.mPseudoFrames.Reset(&savePseudo);
rv = ConstructInline(aPresShell, aPresContext, aState, aDisplay, aContent,
adjParentFrame, aStyleContext, PR_FALSE, newFrame,
&newBlock, &nextInline);
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
aState.mPseudoFrames = savePseudo;
}
// To keep the hash table small don't add inline frames (they're
// typically things like FONT and B), because we can quickly
// find them if we need to
addToHashTable = PR_FALSE;
}
// otherwise let the display property influence the frame type to create
else {
// XXX This section now only handles table frames; should be
// factored out probably
// Use the 'display' property to choose a frame type
switch (aDisplay->mDisplay) {
case NS_STYLE_DISPLAY_TABLE:
{
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
nsIFrame* geometricParent = adjParentFrame;
// If there is no container for a fixed, absolute, or floating table because
// it is the root content frame, then ignore the positioning.
//
// XXX This could be supported either by (1) inserting a dummy block between
// the table and the canvas or (2) teaching the canvas how to reflow positioned
// elements. (1) has the usual problems when multiple frames share the same content
// (notice all the special cases in this file dealing with inner tables and outer
// tables which share the same content). (2) requires some work and possible factoring.
if ((NS_STYLE_POSITION_ABSOLUTE == aDisplay->mPosition) &&
(aState.mAbsoluteItems.containingBlock)) {
isAbsolutelyPositioned = PR_TRUE;
geometricParent = aState.mAbsoluteItems.containingBlock;
}
else if ((NS_STYLE_POSITION_FIXED == aDisplay->mPosition) &&
(aState.mFixedItems.containingBlock)) {
isFixedPositioned = PR_TRUE;
geometricParent = aState.mFixedItems.containingBlock;
}
else if (aDisplay->IsFloating() && aState.mFloatedItems.containingBlock) {
geometricParent = aState.mFloatedItems.containingBlock;
}
nsIFrame* innerTable;
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent,
geometricParent, adjParentFrame, aStyleContext,
tableCreator, PR_FALSE, aFrameItems, newFrame,
innerTable, pseudoParent);
// if there is a pseudoParent, then newFrame was added to the pseudo cell's child list
addNewFrameToChildList = !pseudoParent;
// Note: table construction function takes care of initializing
// the frame, processing children, and setting the initial child
// list
goto nearly_done;
}
// the next 5 cases are only relevant if the parent is not a table, ConstructTableFrame handles children
case NS_STYLE_DISPLAY_TABLE_CAPTION:
{
// adjParentFrame may be an inner table frame rather than an outer frame
// In this case we need to get the outer frame.
nsIFrame* parentFrame = adjParentFrame;
nsIFrame* outerFrame = adjParentFrame->GetParent();
nsCOMPtr<nsIAtom> frameType;
if (outerFrame) {
outerFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::tableOuterFrame == frameType.get()) {
parentFrame = outerFrame;
}
}
rv = ConstructTableCaptionFrame(aPresShell, aPresContext, aState, aContent,
parentFrame, aStyleContext, tableCreator,
aFrameItems, newFrame, pseudoParent);
if (!pseudoParent) {
aFrameItems.AddChild(newFrame);
}
return rv;
}
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP:
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
rv = ConstructTableRowGroupFrame(aPresShell, aPresContext, aState, aContent,
adjParentFrame, aStyleContext, tableCreator,
PR_FALSE, aFrameItems, newFrame, pseudoParent);
if (!pseudoParent) {
aFrameItems.AddChild(newFrame);
}
return rv;
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
rv = ConstructTableColGroupFrame(aPresShell, aPresContext, aState, aContent,
adjParentFrame, aStyleContext, tableCreator,
PR_FALSE, aFrameItems, newFrame, pseudoParent);
if (!pseudoParent) {
aFrameItems.AddChild(newFrame);
}
return rv;
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresShell, aPresContext, aState, aContent,
adjParentFrame, aStyleContext, tableCreator,
PR_FALSE, aFrameItems, newFrame, pseudoParent);
if (!pseudoParent) {
aFrameItems.AddChild(newFrame);
}
return rv;
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent,
adjParentFrame, aStyleContext, tableCreator,
PR_FALSE, aFrameItems, newFrame, pseudoParent);
if (!pseudoParent) {
aFrameItems.AddChild(newFrame);
}
return rv;
case NS_STYLE_DISPLAY_TABLE_CELL:
{
nsIFrame* innerTable;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent,
adjParentFrame, aStyleContext, tableCreator,
PR_FALSE, aFrameItems, newFrame, innerTable, pseudoParent);
if (!pseudoParent) {
aFrameItems.AddChild(newFrame);
}
return rv;
}
default:
// Don't create any frame for content that's not displayed...
if (!aState.mPseudoFrames.IsEmpty()) { // process pending pseudo frames
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
break;
}
}
// If the frame is absolutely positioned, then create a placeholder frame
nearly_done:
nsFrameItems& frameItems = (pseudoParent) ? aState.mPseudoFrames.mCellInner.mChildList
: aFrameItems;
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent,
newFrame, aStyleContext, adjParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
frameItems.AddChild(placeholderFrame);
} else if (aDisplay->IsFloating()) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, adjParentFrame, &placeholderFrame);
// Add the floating frame to its containing block's list of child frames
aState.mFloatedItems.AddChild(newFrame);
// Add the placeholder frame to the flow
frameItems.AddChild(placeholderFrame);
} else if (newFrame && addNewFrameToChildList) {
// Add the frame we just created to the flowed list
frameItems.AddChild(newFrame);
if (newBlock) {
frameItems.AddChild(newBlock);
if (nextInline) {
frameItems.AddChild(nextInline);
}
}
}
if (newFrame && addToHashTable) {
// Add a mapping from content object to primary frame. Note that for
// floated and positioned frames this is the out-of-flow frame and not
// the placeholder frame
if (!primaryFrameSet)
aState.mFrameManager->SetPrimaryFrameFor(aContent, newFrame);
}
return rv;
}
PRBool
nsCSSFrameConstructor::IsScrollable(nsIPresContext* aPresContext,
const nsStyleDisplay* aDisplay)
{
// For the time being it's scrollable if the overflow property is auto or
// scroll, regardless of whether the width or height is fixed in size
switch (aDisplay->mOverflow) {
case NS_STYLE_OVERFLOW_SCROLL:
case NS_STYLE_OVERFLOW_AUTO:
case NS_STYLE_OVERFLOW_SCROLLBARS_NONE:
case NS_STYLE_OVERFLOW_SCROLLBARS_HORIZONTAL:
case NS_STYLE_OVERFLOW_SCROLLBARS_VERTICAL:
return PR_TRUE;
}
return PR_FALSE;
}
nsresult
nsCSSFrameConstructor::InitAndRestoreFrame(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
nsIFrame* aPrevInFlow,
nsIFrame* aNewFrame)
{
nsresult rv = NS_OK;
NS_ASSERTION(aNewFrame, "Null frame cannot be initialized");
if (!aNewFrame)
return NS_ERROR_NULL_POINTER;
// Initialize the frame
rv = aNewFrame->Init(aPresContext, aContent, aParentFrame,
aStyleContext, aPrevInFlow);
if (aState.mFrameState && aState.mFrameManager) {
// Restore frame state for just the newly created frame.
aState.mFrameManager->RestoreFrameStateFor(aNewFrame, aState.mFrameState);
}
return rv;
}
already_AddRefed<nsStyleContext>
nsCSSFrameConstructor::ResolveStyleContext(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aContent)
{
// Resolve the style context based on the content object and the parent
// style context
nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext();
// skip past any parents that are scrolled-content. We want to inherit directly
// from the outer scroll frame.
while (parentStyleContext && parentStyleContext->GetPseudoType() ==
nsCSSAnonBoxes::scrolledContent) {
parentStyleContext = parentStyleContext->GetParent();
}
if (aContent->IsContentOfType(nsIContent::eELEMENT)) {
return aPresContext->ResolveStyleContextFor(aContent, parentStyleContext);
} else {
#ifdef DEBUG
{
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
NS_ASSERTION(tag == nsLayoutAtoms::textTagName,
"shouldn't waste time creating style contexts for "
"comments and processing instructions");
}
#endif
return aPresContext->ResolveStyleContextForNonElement(parentStyleContext);
}
}
// MathML Mod - RBS
#ifdef MOZ_MATHML
nsresult
nsCSSFrameConstructor::ConstructMathMLFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
PRInt32 aNameSpaceID,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
// Make sure that we remain confined in the MathML world
if (aNameSpaceID != kNameSpaceID_MathML)
return NS_OK;
PRBool processChildren = PR_TRUE; // Whether we should process child content.
// MathML frames are inline frames.
// processChildren = PR_TRUE for inline frames.
// see case NS_STYLE_DISPLAY_INLINE in
// ConstructFrameByDisplayType()
nsresult rv = NS_OK;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isReplaced = PR_FALSE;
PRBool ignoreInterTagWhitespace = PR_TRUE;
NS_ASSERTION(aTag != nsnull, "null MathML tag");
if (aTag == nsnull)
return NS_OK;
// Initialize the new frame
nsIFrame* newFrame = nsnull;
// See if the element is absolute or fixed positioned
const nsStyleDisplay* disp = aStyleContext->GetStyleDisplay();
if (NS_STYLE_POSITION_ABSOLUTE == disp->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
}
else if (NS_STYLE_POSITION_FIXED == disp->mPosition) {
isFixedPositioned = PR_TRUE;
}
if (aTag == nsMathMLAtoms::mi_ ||
aTag == nsMathMLAtoms::mn_ ||
aTag == nsMathMLAtoms::ms_ ||
aTag == nsMathMLAtoms::mtext_)
rv = NS_NewMathMLTokenFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mo_)
rv = NS_NewMathMLmoFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mfrac_)
rv = NS_NewMathMLmfracFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msup_)
rv = NS_NewMathMLmsupFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msub_)
rv = NS_NewMathMLmsubFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msubsup_)
rv = NS_NewMathMLmsubsupFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::munder_)
rv = NS_NewMathMLmunderFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mover_)
rv = NS_NewMathMLmoverFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::munderover_)
rv = NS_NewMathMLmunderoverFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mphantom_)
rv = NS_NewMathMLmphantomFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mpadded_)
rv = NS_NewMathMLmpaddedFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mspace_)
rv = NS_NewMathMLmspaceFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mfenced_)
rv = NS_NewMathMLmfencedFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mmultiscripts_)
rv = NS_NewMathMLmmultiscriptsFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mstyle_)
rv = NS_NewMathMLmstyleFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::msqrt_)
rv = NS_NewMathMLmsqrtFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mroot_)
rv = NS_NewMathMLmrootFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::maction_)
rv = NS_NewMathMLmactionFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mrow_ ||
aTag == nsMathMLAtoms::merror_ ||
aTag == nsMathMLAtoms::none_ ||
aTag == nsMathMLAtoms::mprescripts_ )
rv = NS_NewMathMLmrowFrame(aPresShell, &newFrame);
// CONSTRUCTION of MTABLE elements
else if (aTag == nsMathMLAtoms::mtable_ &&
disp->mDisplay == NS_STYLE_DISPLAY_TABLE) {
// <mtable> is an inline-table -- but this isn't yet supported.
// What we do here is to wrap the table in an anonymous containing
// block so that it can mix better with other surrounding MathML markups
nsStyleContext* parentContext = aParentFrame->GetStyleContext();
// first, create a MathML mrow frame that will wrap the block frame
rv = NS_NewMathMLmrowFrame(aPresShell, &newFrame);
if (NS_FAILED(rv)) return rv;
nsRefPtr<nsStyleContext> mrowContext;
mrowContext = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::mozMathInline,
parentContext);
InitAndRestoreFrame(aPresContext, aState, aContent, aParentFrame,
mrowContext, nsnull, newFrame);
// then, create a block frame that will wrap the table frame
nsIFrame* blockFrame;
rv = NS_NewBlockFrame(aPresShell, &blockFrame);
if (NS_FAILED(rv)) return rv;
nsRefPtr<nsStyleContext> blockContext;
blockContext = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSAnonBoxes::mozAnonymousBlock,
mrowContext);
InitAndRestoreFrame(aPresContext, aState, aContent, newFrame,
blockContext, nsnull, blockFrame);
// then, create the table frame itself
nsRefPtr<nsStyleContext> tableContext;
tableContext = aPresContext->ResolveStyleContextFor(aContent,
blockContext);
nsFrameItems tempItems;
nsIFrame* outerTable;
nsIFrame* innerTable;
PRBool pseudoParent;
nsMathMLmtableCreator mathTableCreator(aPresShell);
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent,
blockFrame, blockFrame, tableContext,
mathTableCreator, PR_FALSE, tempItems, outerTable,
innerTable, pseudoParent);
// Note: table construction function takes care of initializing the frame,
// processing children, and setting the initial child list
// set the outerTable as the initial child of the anonymous block
blockFrame->SetInitialChildList(aPresContext, nsnull, outerTable);
// set the block frame as the initial child of the mrow frame
newFrame->SetInitialChildList(aPresContext, nsnull, blockFrame);
// add the new frame to the flow
aFrameItems.AddChild(newFrame);
return rv;
}
// End CONSTRUCTION of MTABLE elements
else if (aTag == nsMathMLAtoms::math) {
// root <math> element
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
PRBool isBlock = (NS_STYLE_DISPLAY_BLOCK == display->mDisplay);
rv = NS_NewMathMLmathFrame(aPresShell, &newFrame, isBlock);
}
else {
return rv;
}
// If we succeeded in creating a frame then initialize it, process its
// children (if requested), and set the initial child list
if (NS_SUCCEEDED(rv) && newFrame) {
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
newFrame->AddStateBits(NS_FRAME_REPLACED_ELEMENT);
}
// record that children that are ignorable whitespace should be excluded
if (ignoreInterTagWhitespace) {
newFrame->AddStateBits(NS_FRAME_EXCLUDE_IGNORABLE_WHITESPACE);
}
nsIFrame* geometricParent = isAbsolutelyPositioned
? aState.mAbsoluteItems.containingBlock
: aParentFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// See if we need to create a view, e.g. the frame is absolutely positioned
nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, PR_FALSE);
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, PR_FALSE);
CreateAnonymousFrames(aPresShell, aPresContext, aTag, aState, aContent, newFrame,
PR_FALSE, childItems);
}
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// If the frame is absolutely positioned then create a placeholder frame
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
}
else {
// Add the new frame to our list of frame items.
aFrameItems.AddChild(newFrame);
}
}
return rv;
}
#endif // MOZ_MATHML
// SVG
#ifdef MOZ_SVG
nsresult
nsCSSFrameConstructor::ConstructSVGFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
PRInt32 aNameSpaceID,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
NS_ASSERTION(NS_SUCCEEDED(aContent->GetNameSpaceID(&aNameSpaceID)) &&
(aNameSpaceID == kNameSpaceID_SVG), "SVG frame constructed in wrong namespace");
nsresult rv = NS_OK;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool forceView = PR_FALSE;
PRBool isBlock = PR_FALSE;
PRBool processChildren = PR_FALSE;
NS_ASSERTION(aTag != nsnull, "null SVG tag");
if (aTag == nsnull)
return NS_OK;
// Initialize the new frame
nsIFrame* newFrame = nsnull;
//nsSVGTableCreator svgTableCreator(aPresShell); // Used to make table views.
// See if the element is absolute or fixed positioned
const nsStyleDisplay* disp = aStyleContext->GetStyleDisplay();
if (NS_STYLE_POSITION_ABSOLUTE == disp->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
}
else if (NS_STYLE_POSITION_FIXED == disp->mPosition) {
isFixedPositioned = PR_TRUE;
}
if (aTag == nsSVGAtoms::svg) {
forceView = PR_TRUE;
isBlock = PR_TRUE;
processChildren = PR_TRUE;
rv = NS_NewSVGOuterSVGFrame(aPresShell, aContent, &newFrame);
}
else if (aTag == nsSVGAtoms::g) {
processChildren = PR_TRUE;
rv = NS_NewSVGGFrame(aPresShell, aContent, &newFrame);
}
else if (aTag == nsSVGAtoms::polygon)
rv = NS_NewSVGPolygonFrame(aPresShell, aContent, &newFrame);
else if (aTag == nsSVGAtoms::polyline)
rv = NS_NewSVGPolylineFrame(aPresShell, aContent, &newFrame);
else if (aTag == nsSVGAtoms::circle)
rv = NS_NewSVGCircleFrame(aPresShell, aContent, &newFrame);
else if (aTag == nsSVGAtoms::ellipse)
rv = NS_NewSVGEllipseFrame(aPresShell, aContent, &newFrame);
else if (aTag == nsSVGAtoms::line)
rv = NS_NewSVGLineFrame(aPresShell, aContent, &newFrame);
else if (aTag == nsSVGAtoms::rect)
rv = NS_NewSVGRectFrame(aPresShell, aContent, &newFrame);
else if (aTag == nsSVGAtoms::foreignObject) {
processChildren = PR_TRUE;
rv = NS_NewSVGForeignObjectFrame(aPresShell, aContent, &newFrame);
}
else if (aTag == nsSVGAtoms::path)
rv = NS_NewSVGPathFrame(aPresShell, aContent, &newFrame);
if (newFrame == nsnull) {
// Either we have an unknown tag, or construction of a frame
// failed. One reason why frame construction for a known tag might
// have failed is that the content element doesn't implement all
// interfaces required by the frame. This happens e.g. when using
// 'extends' in xbl to extend an xbl binding from an svg
// element. In that case, the bound content element will always be
// a standard xml element, and not be of the right type.
// The best we can do here is to create a generic svg container frame.
#ifdef DEBUG
printf("Warning: Creating SVGGenericContainerFrame for tag <");
nsAutoString str;
aTag->ToString(str);
printf("%s>\n", NS_ConvertUCS2toUTF8(str).get());
#endif
processChildren = PR_TRUE;
rv = NS_NewSVGGenericContainerFrame(aPresShell, aContent, &newFrame);
}
// If we succeeded in creating a frame then initialize it, process its
// children (if requested), and set the initial child list
if (NS_SUCCEEDED(rv) && newFrame != nsnull) {
nsIFrame* geometricParent = isAbsolutelyPositioned
? aState.mAbsoluteItems.containingBlock
: aParentFrame;
if (aTag == nsSVGAtoms::foreignObject) {
// Claim to be relatively positioned so that we end up being the
// absolute containing block. Also, push "null" as the floater
// containing block so that we get the SPACE_MGR bit set.
nsFrameConstructorSaveState saveState;
aState.PushFloatContainingBlock(nsnull, saveState, PR_FALSE, PR_FALSE);
rv = ConstructBlock(aPresShell, aPresContext, aState, disp, aContent,
geometricParent, aParentFrame, aStyleContext,
newFrame, PR_TRUE);
} else {
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
nsHTMLContainerFrame::CreateViewForFrame(newFrame, aParentFrame, forceView);
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent,
newFrame, PR_TRUE, childItems, isBlock);
CreateAnonymousFrames(aPresShell, aPresContext, aTag, aState, aContent, newFrame,
PR_FALSE, childItems);
}
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
// If the frame is absolutely positioned then create a placeholder frame
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager, aContent, newFrame,
aStyleContext, aParentFrame, &placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aState.mAbsoluteItems.AddChild(newFrame);
} else {
aState.mFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else {
// Add the new frame to our list of frame items.
aFrameItems.AddChild(newFrame);
}
}
return rv;
}
#endif // MOZ_SVG
PRBool
nsCSSFrameConstructor::PageBreakBefore(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
// See if page-break-before is set for all elements except row groups, rows, cells
// (these are handled internally by tables) and construct a page break frame if so.
if (display && ((NS_STYLE_DISPLAY_TABLE == display->mDisplay) ||
(!IsTableRelated(display->mDisplay, PR_TRUE)))) {
if (display->mBreakBefore) {
ConstructPageBreakFrame(aPresShell, aPresContext, aState, aContent,
aParentFrame, aStyleContext, aFrameItems);
}
return display->mBreakAfter;
}
return PR_FALSE;
}
nsresult
nsCSSFrameConstructor::ConstructPageBreakFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
nsRefPtr<nsStyleContext> pseudoStyle;
pseudoStyle = aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsCSSAnonBoxes::pageBreak,
aStyleContext);
nsIFrame* pageBreakFrame;
nsresult rv = NS_NewPageBreakFrame(aPresShell, &pageBreakFrame);
if (NS_SUCCEEDED(rv)) {
InitAndRestoreFrame(aPresContext, aState, aContent, aParentFrame,
pseudoStyle, nsnull, pageBreakFrame);
aFrameItems.AddChild(pageBreakFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsFrameItems& aFrameItems)
{
NS_PRECONDITION(nsnull != aParentFrame, "no parent frame");
nsresult rv = NS_OK;
// don't create a whitespace frame if aParent doesn't want it
if (!NeedFrameFor(aParentFrame, aContent)) {
return rv;
}
// Get the element's tag
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
// never create frames for comments on PIs
if (tag == nsLayoutAtoms::commentTagName ||
tag == nsLayoutAtoms::processingInstructionTagName)
return rv;
nsRefPtr<nsStyleContext> styleContext;
styleContext = ResolveStyleContext(aPresContext, aParentFrame, aContent);
PRInt32 nameSpaceID;
aContent->GetNameSpaceID(&nameSpaceID);
PRBool pageBreakAfter = PR_FALSE;
PRBool paginated;
aPresContext->IsPaginated(&paginated);
if (paginated) {
// See if there is a page break before, if so construct one. Also see if there is one after
pageBreakAfter = PageBreakBefore(aPresShell, aPresContext, aState, aContent,
aParentFrame, styleContext, aFrameItems);
}
// construct the frame
rv = ConstructFrameInternal(aPresShell, aPresContext, aState, aContent, aParentFrame,
tag, nameSpaceID, styleContext, aFrameItems, PR_FALSE);
if (NS_SUCCEEDED(rv) && pageBreakAfter) {
// Construct the page break after
ConstructPageBreakFrame(aPresShell, aPresContext, aState, aContent,
aParentFrame, styleContext, aFrameItems);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructFrameInternal( nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
PRInt32 aNameSpaceID,
nsStyleContext* aStyleContext,
nsFrameItems& aFrameItems,
PRBool aXBLBaseTag)
{
// The following code allows the user to specify the base tag
// of an element using XBL. XUL and HTML objects (like boxes, menus, etc.)
// can then be extended arbitrarily.
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
nsRefPtr<nsStyleContext> styleContext(aStyleContext);
nsCOMPtr<nsIXBLBinding> binding;
if (!aXBLBaseTag)
{
// Ensure that our XBL bindings are installed.
if (display->mBinding) {
// Get the XBL loader.
nsresult rv;
// Load the bindings.
PRBool resolveStyle;
nsIXBLService * xblService = GetXBLService();
if (!xblService)
return NS_ERROR_FAILURE;
rv = xblService->LoadBindings(aContent, display->mBinding, PR_FALSE, getter_AddRefs(binding), &resolveStyle);
if (NS_FAILED(rv))
return NS_OK;
if (resolveStyle) {
styleContext = ResolveStyleContext(aPresContext, aParentFrame,
aContent);
}
nsCOMPtr<nsIAtom> baseTag;
PRInt32 nameSpaceID;
xblService->ResolveTag(aContent, &nameSpaceID, getter_AddRefs(baseTag));
if (baseTag.get() != aTag || aNameSpaceID != nameSpaceID) {
// Construct the frame using the XBL base tag.
rv = ConstructFrameInternal( aPresShell,
aPresContext,
aState,
aContent,
aParentFrame,
baseTag,
nameSpaceID,
styleContext,
aFrameItems,
PR_TRUE);
if (binding) {
nsIBindingManager *bm = mDocument->GetBindingManager();
if (bm)
bm->AddToAttachedQueue(binding);
}
return rv;
}
}
}
// Pre-check for display "none" - if we find that, don't create
// any frame at all
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
aState.mFrameManager->SetUndisplayedContent(aContent, styleContext);
return NS_OK;
}
if (aTag == nsLayoutAtoms::textTagName)
return ConstructTextFrame(aPresShell, aPresContext, aState,
aContent, aParentFrame, styleContext,
aFrameItems);
// Style resolution can normally happen lazily. However, getting the
// Visibility struct can cause |SetBidiEnabled| to be called on the
// pres context, and this needs to happen before we start reflow, so
// do it now, when constructing frames. See bug 115291.
{
styleContext->GetStyleVisibility();
}
nsIFrame* lastChild = aFrameItems.lastChild;
// Handle specific frame types
nsresult rv = ConstructHTMLFrame(aPresShell, aPresContext, aState,
aContent, aParentFrame, aTag,
aNameSpaceID, styleContext, aFrameItems);
// Failing to find a matching HTML frame, try creating a specialized
// XUL frame. This is temporary, pending planned factoring of this
// whole process into separate, pluggable steps.
if (NS_SUCCEEDED(rv) && ((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild))) {
PRBool haltProcessing = PR_FALSE;
rv = ConstructXULFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aNameSpaceID, styleContext, aFrameItems, aXBLBaseTag, haltProcessing);
if (haltProcessing) {
return rv;
}
}
// MathML Mod - RBS
#ifdef MOZ_MATHML
if (NS_SUCCEEDED(rv) && ((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild))) {
rv = ConstructMathMLFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aNameSpaceID, styleContext, aFrameItems);
}
#endif
// SVG
#ifdef MOZ_SVG
if (NS_SUCCEEDED(rv) &&
((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild)) &&
(aNameSpaceID == kNameSpaceID_SVG)) {
rv = ConstructSVGFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aNameSpaceID, styleContext, aFrameItems);
}
#endif
if (NS_SUCCEEDED(rv) && ((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild))) {
// When there is no explicit frame to create, assume it's a
// container and let display style dictate the rest
rv = ConstructFrameByDisplayType(aPresShell, aPresContext, aState, display,
aContent, aNameSpaceID, aTag,
aParentFrame, styleContext, aFrameItems);
}
if (binding) {
nsIBindingManager *bm = mDocument->GetBindingManager();
if (bm)
bm->AddToAttachedQueue(binding);
}
return rv;
}
inline PRBool
IsRootBoxFrame(nsIFrame *aFrame)
{
nsCOMPtr<nsIAtom> frameType;
aFrame->GetFrameType(getter_AddRefs(frameType));
return (frameType == nsLayoutAtoms::rootFrame);
}
NS_IMETHODIMP
nsCSSFrameConstructor::ReconstructDocElementHierarchy(nsIPresContext* aPresContext)
{
NS_PRECONDITION(aPresContext, "null pres context argument");
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ReconstructDocElementHierarchy\n");
}
#endif
nsresult rv = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (mDocument && shell) {
nsIContent *rootContent = mDocument->GetRootContent();
if (rootContent) {
// Before removing the frames associated with the content object, ask them to save their
// state onto a temporary state object.
CaptureStateForFramesOf(aPresContext, rootContent, mTempFrameTreeState);
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
nsnull, nsnull, mTempFrameTreeState);
nsIFrame* docElementFrame;
// Get the frame that corresponds to the document element
state.mFrameManager->GetPrimaryFrameFor(rootContent, &docElementFrame);
// Clear the hash tables that map from content to frame and out-of-flow
// frame to placeholder frame
state.mFrameManager->ClearPrimaryFrameMap();
state.mFrameManager->ClearPlaceholderFrameMap();
state.mFrameManager->ClearUndisplayedContentMap();
// Take the docElementFrame, and remove it from its parent. For
// HTML, we'll be removing the Area frame from the Canvas; for
// XUL, we'll remove the GfxScroll or Box from the RootBoxFrame.
//
// The three possible structures (at least the ones observed so
// far, see bugs 70258 and 93558) are:
//
// (HTML)
// ScrollBoxFrame(html)<
// ScrollPortFrame(html)<
// Canvas(-1)<
// Area(html)<
// (etc.)
//
// (XUL #1)
// RootBoxFrame(window)<
// GfxScroll<
// ScrollBoxFrame(window)<
// ScrollPortFrame(window)<
// (etc.)
//
// (XUL #2)
// RootBox<
// Box<
// (etc.)
//
if (docElementFrame) {
nsIFrame* docParentFrame = docElementFrame->GetParent();
#ifdef MOZ_XUL
// If we're in a XUL document, then we need to crawl up to the
// RootBoxFrame and remove _its_ child.
nsCOMPtr<nsIXULDocument> xuldoc = do_QueryInterface(mDocument);
if (xuldoc) {
nsCOMPtr<nsIAtom> frameType;
while (docParentFrame && !IsRootBoxFrame(docParentFrame)) {
docElementFrame = docParentFrame;
docParentFrame = docParentFrame->GetParent();
}
}
#endif
NS_ASSERTION(docParentFrame, "should have a parent frame");
if (docParentFrame) {
// Remove the old document element hieararchy
rv = state.mFrameManager->RemoveFrame(docParentFrame, nsnull,
docElementFrame);
if (NS_SUCCEEDED(rv)) {
// Remove any existing fixed items: they are always on the FixedContainingBlock
rv = RemoveFixedItems(aPresContext, shell, state.mFrameManager);
if (NS_SUCCEEDED(rv)) {
// Create the new document element hierarchy
nsIFrame* newChild;
nsStyleContext* rootPseudoStyle = docParentFrame->GetStyleContext();
rv = ConstructDocElementFrame(shell, aPresContext, state, rootContent,
docParentFrame, rootPseudoStyle,
newChild);
if (NS_SUCCEEDED(rv)) {
rv = state.mFrameManager->InsertFrames(docParentFrame, nsnull,
nsnull, newChild);
// Tell the fixed containing block about its 'fixed' frames
if (state.mFixedItems.childList) {
state.mFrameManager->InsertFrames(mFixedContainingBlock,
nsLayoutAtoms::fixedList,
nsnull,
state.mFixedItems.childList);
}
}
}
}
}
}
}
}
return rv;
}
nsIFrame*
nsCSSFrameConstructor::GetFrameFor(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aContent)
{
// Get the primary frame associated with the content
nsIFrame* frame;
aPresShell->GetPrimaryFrameFor(aContent, &frame);
if (nsnull != frame) {
// Check to see if the content is a select and
// then if it has a drop down (thus making it a combobox)
// The drop down is a ListControlFrame derived from a
// nsGfxScrollFrame then get the area frame and that will be the parent
// What is unclear here, is if any of this fails, should it return
// the nsComboboxControlFrame or null?
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
nsresult res = aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(res) && selectElement) {
nsIComboboxControlFrame * comboboxFrame;
res = frame->QueryInterface(NS_GET_IID(nsIComboboxControlFrame),
(void**)&comboboxFrame);
nsIFrame * listFrame;
if (NS_SUCCEEDED(res) && comboboxFrame) {
comboboxFrame->GetDropDown(&listFrame);
} else {
listFrame = frame;
}
if (listFrame != nsnull) {
nsIListControlFrame * list;
res = listFrame->QueryInterface(NS_GET_IID(nsIListControlFrame),
(void**)&list);
if (NS_SUCCEEDED(res) && list) {
list->GetOptionsContainer(aPresContext, &frame);
}
}
} else {
// If the primary frame is a scroll frame, then get the scrolled frame.
// That's the frame that gets the reflow command
const nsStyleDisplay* display = frame->GetStyleDisplay();
// If the primary frame supports IScrollableFrame, then get the scrolled frame.
// That's the frame that gets the reflow command
nsIScrollableFrame *pScrollableFrame = nsnull;
if (NS_SUCCEEDED( frame->QueryInterface(NS_GET_IID(nsIScrollableFrame),
(void **)&pScrollableFrame) ))
{
pScrollableFrame->GetScrolledFrame( aPresContext, frame );
}
// if we get an outer table frame use its 1st child which is a table inner frame
// if we get a table cell frame use its 1st child which is an area frame
else if ((NS_STYLE_DISPLAY_TABLE == display->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_CELL == display->mDisplay)) {
frame->FirstChild(aPresContext, nsnull, &frame);
}
}
}
return frame;
}
nsIFrame*
nsCSSFrameConstructor::GetAbsoluteContainingBlock(nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
NS_PRECONDITION(nsnull != mInitialContainingBlock, "no initial containing block");
// Starting with aFrame, look for a frame that is absolutely positioned or
// relatively positioned
nsIFrame* containingBlock = nsnull;
for (nsIFrame* frame = aFrame; frame; frame = frame->GetParent()) {
// Is it positioned?
// If it's a table then ignore it, because for the time being tables
// are not containers for absolutely positioned child frames
const nsStyleDisplay* disp = frame->GetStyleDisplay();
if (disp->IsPositioned() && disp->mDisplay != NS_STYLE_DISPLAY_TABLE) {
nsCOMPtr<nsIAtom> frameType;
frame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::scrollFrame == frameType) {
// We want the scrolled frame, not either of the two scroll frames
nsIFrame* scrolledFrame;
frame->FirstChild(aPresContext, nsnull, &scrolledFrame);
if (scrolledFrame) {
scrolledFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::areaFrame == frameType) {
containingBlock = scrolledFrame;
break;
} else if (nsLayoutAtoms::scrollFrame == frameType) {
scrolledFrame->FirstChild(aPresContext, nsnull, &scrolledFrame);
if (scrolledFrame) {
scrolledFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::areaFrame == frameType) {
containingBlock = scrolledFrame;
break;
}
}
}
}
} else if ((nsLayoutAtoms::areaFrame == frameType) ||
(nsLayoutAtoms::positionedInlineFrame == frameType)) {
containingBlock = frame;
break;
} else if (nsLayoutAtoms::fieldSetFrame == frameType) {
// If the positioned frame is a fieldset, use the area frame inside it
frame->FirstChild(aPresContext, nsnull, &containingBlock);
break;
}
#ifdef DEBUG
else {
NS_WARNING("Positioned frame that does not handle positioned kids; looking further up the parent chain");
}
#endif
}
}
// If we found an absolutely positioned containing block, then use the first-in-flow if
// it is a positioned inline. If we didn't find it, then use the initial containing block.
return (containingBlock) ? AdjustAbsoluteContainingBlock(aPresContext, containingBlock)
: mInitialContainingBlock;
}
nsIFrame*
nsCSSFrameConstructor::GetFloatContainingBlock(nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
NS_PRECONDITION(mInitialContainingBlock, "no initial containing block");
// Starting with aFrame, look for a frame that is a real block frame,
// or a floated inline or absolutely positioned inline frame
nsIFrame* containingBlock = aFrame;
while (nsnull != containingBlock) {
const nsStyleDisplay* display = containingBlock->GetStyleDisplay();
if ((NS_STYLE_DISPLAY_BLOCK == display->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == display->mDisplay)) {
break;
}
else if (NS_STYLE_DISPLAY_INLINE == display->mDisplay) {
if ((NS_STYLE_FLOAT_NONE != display->mFloats) ||
(display->IsAbsolutelyPositioned())) {
if (NS_STYLE_FLOAT_NONE != display->mFloats) {
nsCOMPtr<nsIAtom> frameType;
containingBlock->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::letterFrame != frameType.get()) {
break;
}
}
else {
break;
}
}
}
// Continue walking up the hierarchy
containingBlock = containingBlock->GetParent();
}
// If we didn't find a containing block, then use the initial
// containing block
if (nsnull == containingBlock) {
containingBlock = mInitialContainingBlock;
}
return containingBlock;
}
/**
* This function is called by ContentAppended() and ContentInserted()
* when appending flowed frames to a parent's principal child list. It
* handles the case where the parent frame has :after pseudo-element
* generated content.
*/
nsresult
nsCSSFrameConstructor::AppendFrames(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIContent* aContainer,
nsIFrame* aParentFrame,
nsIFrame* aFrameList)
{
// See if the parent has an :after pseudo-element. Check for the presence
// of style first, since nsLayoutUtils::GetAfterFrame is sorta expensive.
nsStyleContext* parentStyle = aParentFrame->GetStyleContext();
if (nsLayoutUtils::HasPseudoStyle(aContainer, parentStyle,
nsCSSPseudoElements::after,
aPresContext)) {
nsIFrame* afterFrame = nsLayoutUtils::GetAfterFrame(aParentFrame,
aPresContext);
if (afterFrame) {
nsIFrame* firstChild;
aParentFrame->FirstChild(aPresContext, nsnull, &firstChild);
nsFrameList frames(firstChild);
// Insert the frames before the :after pseudo-element.
return aFrameManager->InsertFrames(aParentFrame,
nsnull, frames.GetPrevSiblingFor(afterFrame),
aFrameList);
}
}
nsresult rv = NS_OK;
// a col group or col appended to a table may result in an insert rather than an append
nsCOMPtr<nsIAtom> parentType;
aParentFrame->GetFrameType(getter_AddRefs(parentType));
if (nsLayoutAtoms::tableFrame == parentType.get()) {
nsTableFrame* tableFrame = NS_REINTERPRET_CAST(nsTableFrame*, aParentFrame);
nsCOMPtr<nsIAtom> childType;
aFrameList->GetFrameType(getter_AddRefs(childType));
if (nsLayoutAtoms::tableColFrame == childType.get()) {
// table column
nsIFrame* parentFrame = aFrameList->GetParent();
rv = aFrameManager->AppendFrames(parentFrame,
nsLayoutAtoms::colGroupList, aFrameList);
}
else if (nsLayoutAtoms::tableColGroupFrame == childType) {
// table col group
nsIFrame* prevSibling;
PRBool doAppend = nsTableColGroupFrame::GetLastRealColGroup(tableFrame, &prevSibling);
if (doAppend) {
rv = aFrameManager->AppendFrames(aParentFrame,
nsLayoutAtoms::colGroupList, aFrameList);
}
else {
rv = aFrameManager->InsertFrames(aParentFrame,
nsLayoutAtoms::colGroupList, prevSibling, aFrameList);
}
}
else if (nsLayoutAtoms::tableCaptionFrame == childType) {
// table caption
rv = aFrameManager->AppendFrames(aParentFrame,
nsLayoutAtoms::captionList, aFrameList);
}
else {
rv = aFrameManager->AppendFrames(aParentFrame, nsnull, aFrameList);
}
}
else {
// Append the frames to the end of the parent's child list
// check for a table caption which goes on an additional child list with a different parent
nsIFrame* outerTableFrame;
if (GetCaptionAdjustedParent(aParentFrame, aFrameList, &outerTableFrame)) {
rv = aFrameManager->AppendFrames(outerTableFrame,
nsLayoutAtoms::captionList, aFrameList);
}
else {
rv = aFrameManager->AppendFrames(aParentFrame, nsnull, aFrameList);
}
}
return rv;
}
/**
* Find the ``rightmost'' frame for the anonymous content immediately
* preceding aChild, following continuation if necessary.
*/
static nsIFrame*
FindPreviousAnonymousSibling(nsIPresShell* aPresShell,
nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild)
{
NS_PRECONDITION(aDocument, "null document from content element in FindNextAnonymousSibling");
nsCOMPtr<nsIDOMDocumentXBL> xblDoc(do_QueryInterface(aDocument));
NS_ASSERTION(xblDoc, "null xblDoc for content element in FindNextAnonymousSibling");
if (! xblDoc)
return nsnull;
// Grovel through the anonymous elements looking for aChild. We'll
// start our search for a previous frame there.
nsCOMPtr<nsIDOMNodeList> nodeList;
nsCOMPtr<nsIDOMElement> elt(do_QueryInterface(aContainer));
xblDoc->GetAnonymousNodes(elt, getter_AddRefs(nodeList));
if (! nodeList)
return nsnull;
PRUint32 length;
nodeList->GetLength(&length);
PRInt32 index;
for (index = PRInt32(length) - 1; index >= 0; --index) {
nsCOMPtr<nsIDOMNode> node;
nodeList->Item(PRUint32(index), getter_AddRefs(node));
nsCOMPtr<nsIContent> child = do_QueryInterface(node);
if (child.get() == aChild)
break;
}
// We want the node immediately before aChild. Keep going until we
// run off the beginning of the nodeList, or we find a frame.
while (--index >= 0) {
nsCOMPtr<nsIDOMNode> node;
nodeList->Item(PRUint32(index), getter_AddRefs(node));
nsCOMPtr<nsIContent> child = do_QueryInterface(node);
// Get its frame. If it doesn't have one, continue on to the
// anonymous element that preceded it.
nsIFrame* prevSibling;
aPresShell->GetPrimaryFrameFor(child, &prevSibling);
if (prevSibling) {
// The frame may be a special frame (a split inline frame that
// contains a block). Get the last part of that split.
if (IsFrameSpecial(prevSibling)) {
nsCOMPtr<nsIFrameManager> fm;
aPresShell->GetFrameManager(getter_AddRefs(fm));
prevSibling = GetLastSpecialSibling(fm, prevSibling);
}
// The frame may have a continuation. If so, we want the
// last-in-flow as our previous sibling.
prevSibling = prevSibling->GetLastInFlow();
// If the frame is out-of-flow, GPFF() will have returned the
// out-of-flow frame; we want the placeholder.
const nsStyleDisplay* display = prevSibling->GetStyleDisplay();
if (display->IsFloating() || display->IsAbsolutelyPositioned()) {
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame);
NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame");
prevSibling = placeholderFrame;
}
// Found a previous sibling, we're done!
return prevSibling;
}
}
return nsnull;
}
/**
* Find the frame for the anonymous content immediately following
* aChild.
*/
static nsIFrame*
FindNextAnonymousSibling(nsIPresShell* aPresShell,
nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild)
{
NS_PRECONDITION(aDocument, "null document from content element in FindNextAnonymousSibling");
nsCOMPtr<nsIDOMDocumentXBL> xblDoc(do_QueryInterface(aDocument));
NS_ASSERTION(xblDoc, "null xblDoc for content element in FindNextAnonymousSibling");
if (! xblDoc)
return nsnull;
// Grovel through the anonymous elements looking for aChild
nsCOMPtr<nsIDOMNodeList> nodeList;
nsCOMPtr<nsIDOMElement> elt(do_QueryInterface(aContainer));
xblDoc->GetAnonymousNodes(elt, getter_AddRefs(nodeList));
if (! nodeList)
return nsnull;
PRUint32 length;
nodeList->GetLength(&length);
PRInt32 index;
for (index = 0; index < PRInt32(length); ++index) {
nsCOMPtr<nsIDOMNode> node;
nodeList->Item(PRUint32(index), getter_AddRefs(node));
nsCOMPtr<nsIContent> child = do_QueryInterface(node);
if (child.get() == aChild)
break;
}
// We want the node immediately after aChild. Keep going until we
// run off the end of the nodeList, or we find a next sibling.
while (++index < PRInt32(length)) {
nsCOMPtr<nsIDOMNode> node;
nodeList->Item(PRUint32(index), getter_AddRefs(node));
nsCOMPtr<nsIContent> child = do_QueryInterface(node);
// Get its frame
nsIFrame* nextSibling;
aPresShell->GetPrimaryFrameFor(child, &nextSibling);
if (nextSibling) {
#ifdef DEBUG
// The primary frame should never be a continuation
nsIFrame* prevInFlow;
nextSibling->GetPrevInFlow(&prevInFlow);
NS_ASSERTION(!prevInFlow, "primary frame is a continuation!?");
#endif
// If the frame is out-of-flow, GPFF() will have returned the
// out-of-flow frame; we want the placeholder.
const nsStyleDisplay* display = nextSibling->GetStyleDisplay();
if (display->IsFloating() || display->IsAbsolutelyPositioned()) {
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(nextSibling, &placeholderFrame);
NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame");
nextSibling = placeholderFrame;
}
// Found a next sibling, we're done!
return nextSibling;
}
}
return nsnull;
}
#define UNSET_DISPLAY 255
// This gets called to see if the frames corresponding to aSiblingDisplay and aDisplay
// should be siblings in the frame tree. Although (1) rows and cols, (2) row groups
// and col groups, (3) row groups and captions (4) legends and content inside fieldsets
// are siblings from a content perspective, they are not considered siblings in the
// frame tree.
PRBool
nsCSSFrameConstructor::IsValidSibling(nsIPresShell& aPresShell,
nsIFrame* aParentFrame,
const nsIFrame& aSibling,
PRUint8 aSiblingDisplay,
nsIContent& aContent,
PRUint8& aDisplay)
{
if ((NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == aSiblingDisplay) ||
(NS_STYLE_DISPLAY_TABLE_COLUMN == aSiblingDisplay) ||
(NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == aSiblingDisplay) ||
(NS_STYLE_DISPLAY_TABLE_ROW_GROUP == aSiblingDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == aSiblingDisplay)) {
// if we haven't already, construct a style context to find the display type of aContent
if (UNSET_DISPLAY == aDisplay) {
nsCOMPtr<nsIPresContext> context;
aPresShell.GetPresContext(getter_AddRefs(context));
nsIFrame* parent = aSibling.GetParent();
nsRefPtr<nsStyleContext> styleContext;
styleContext = ResolveStyleContext(context, parent, &aContent);
if (!styleContext) return PR_FALSE;
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
aDisplay = display->mDisplay;
}
switch (aSiblingDisplay) {
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
return (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == aDisplay);
case NS_STYLE_DISPLAY_TABLE_COLUMN:
return (NS_STYLE_DISPLAY_TABLE_COLUMN == aDisplay);
default: // all of the row group types
return (NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == aDisplay) ||
(NS_STYLE_DISPLAY_TABLE_ROW_GROUP == aDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == aDisplay) ||
(NS_STYLE_DISPLAY_TABLE_CAPTION == aDisplay);
}
}
else if (NS_STYLE_DISPLAY_TABLE_CAPTION == aSiblingDisplay) {
// Nothing can be a sibling of a caption since there can only be one caption.
// But this check is necessary since a row group and caption are siblings
// from a content perspective (they share the table content as parent)
return PR_FALSE;
}
else {
nsCOMPtr<nsIAtom> parentType;
aParentFrame->GetFrameType(getter_AddRefs(parentType));
if (nsLayoutAtoms::fieldSetFrame == parentType) {
// Legends can be sibling of legends but not of other content in the fieldset
nsCOMPtr<nsIAtom> sibType;
aSibling.GetFrameType(getter_AddRefs(sibType));
nsCOMPtr<nsIDOMHTMLLegendElement> legendContent(do_QueryInterface(&aContent));
if ((legendContent && (nsLayoutAtoms::legendFrame != sibType)) ||
(!legendContent && (nsLayoutAtoms::legendFrame == sibType)))
return PR_FALSE;
}
}
return PR_TRUE;
}
/**
* Find the ``rightmost'' frame for the content immediately preceding
* aIndexInContainer, following continuations if necessary.
*/
nsIFrame*
nsCSSFrameConstructor::FindPreviousSibling(nsIPresShell* aPresShell,
nsIContent* aContainer,
nsIFrame* aContainerFrame,
PRInt32 aIndexInContainer,
const nsIContent* aChild)
{
NS_ASSERTION(aPresShell && aContainer, "null arguments");
ChildIterator first, iter;
nsresult rv = ChildIterator::Init(aContainer, &first, &iter);
NS_ENSURE_SUCCESS(rv, nsnull);
iter.seek(aIndexInContainer);
PRUint8 childDisplay = UNSET_DISPLAY;
// Note: not all content objects are associated with a frame (e.g., if it's
// `display: hidden') so keep looking until we find a previous frame
while (iter-- != first) {
nsIFrame* prevSibling = nsnull;
aPresShell->GetPrimaryFrameFor(nsCOMPtr<nsIContent>(*iter), &prevSibling);
if (prevSibling) {
// The frame may be a special frame (a split inline frame that
// contains a block). Get the last part of that split.
if (IsFrameSpecial(prevSibling)) {
nsCOMPtr<nsIFrameManager> fm;
aPresShell->GetFrameManager(getter_AddRefs(fm));
prevSibling = GetLastSpecialSibling(fm, prevSibling);
}
// The frame may have a continuation. Get the last-in-flow
prevSibling = prevSibling->GetLastInFlow();
// If the frame is out-of-flow, GPFF() will have returned the
// out-of-flow frame; we want the placeholder.
// XXXldb Why not check NS_FRAME_OUT_OF_FLOW state bit?
const nsStyleDisplay* display = prevSibling->GetStyleDisplay();
if (aChild && !IsValidSibling(*aPresShell, aContainerFrame, *prevSibling,
display->mDisplay, (nsIContent&)*aChild, childDisplay))
continue;
if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) {
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame);
// XXXldb Was this supposed to be a null-check of placeholderFrame?
if (prevSibling)
prevSibling = placeholderFrame;
}
else if (display->IsFloating() || display->IsAbsolutelyPositioned()) {
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame);
NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame");
prevSibling = placeholderFrame;
}
#ifdef DEBUG
nsIFrame* containerFrame = nsnull;
aPresShell->GetPrimaryFrameFor(aContainer, &containerFrame);
NS_ASSERTION(prevSibling != containerFrame, "Previous Sibling is the Container's frame");
#endif
// Found a previous sibling, we're done!
return prevSibling;
}
}
return nsnull;
}
/**
* Find the frame for the content node immediately following
* aIndexInContainer.
*/
nsIFrame*
nsCSSFrameConstructor::FindNextSibling(nsIPresShell* aPresShell,
nsIContent* aContainer,
nsIFrame* aContainerFrame,
PRInt32 aIndexInContainer,
const nsIContent* aChild)
{
ChildIterator iter, last;
nsresult rv = ChildIterator::Init(aContainer, &iter, &last);
NS_ENSURE_SUCCESS(rv, nsnull);
iter.seek(aIndexInContainer);
// Catch the case where someone tries to append
if (iter == last)
return nsnull;
PRUint8 childDisplay = UNSET_DISPLAY;
while (++iter != last) {
nsIFrame* nextSibling = nsnull;
aPresShell->GetPrimaryFrameFor(nsCOMPtr<nsIContent>(*iter), &nextSibling);
if (nextSibling) {
#ifdef DEBUG
// The frame primary frame should never be a continuation
nsIFrame* prevInFlow;
nextSibling->GetPrevInFlow(&prevInFlow);
NS_ASSERTION(!prevInFlow, "primary frame is a continuation!?");
#endif
// If the frame is out-of-flow, GPFF() will have returned the
// out-of-flow frame; we want the placeholder.
const nsStyleDisplay* display = nextSibling->GetStyleDisplay();
if (aChild && !IsValidSibling(*aPresShell, aContainerFrame, *nextSibling,
display->mDisplay, (nsIContent&)*aChild, childDisplay))
continue;
if (display->IsFloating() || display->IsAbsolutelyPositioned()) {
// Nope. Get the place-holder instead
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(nextSibling, &placeholderFrame);
NS_ASSERTION(placeholderFrame, "no placeholder for out-of-flow frame");
nextSibling = placeholderFrame;
}
// We found a next sibling, we're done!
return nextSibling;
}
}
return nsnull;
}
inline PRBool
ShouldIgnoreSelectChild(nsIContent* aContainer)
{
// Ignore options and optgroups inside a select (size > 1)
nsCOMPtr<nsIAtom> containerTag;
aContainer->GetTag(getter_AddRefs(containerTag));
if (containerTag == nsHTMLAtoms::optgroup ||
containerTag == nsHTMLAtoms::select) {
nsIContent* selectContent = aContainer;
while (containerTag != nsHTMLAtoms::select) {
selectContent = selectContent->GetParent();
if (!selectContent) {
break;
}
selectContent->GetTag(getter_AddRefs(containerTag));
}
nsCOMPtr<nsISelectElement> selectElement = do_QueryInterface(selectContent);
if (selectElement) {
nsAutoString selSize;
aContainer->GetAttr(kNameSpaceID_None, nsHTMLAtoms::size, selSize);
if (!selSize.IsEmpty()) {
PRInt32 err;
return (selSize.ToInteger(&err) > 1);
}
}
}
return PR_FALSE;
}
// For tables, returns the inner table, if the child is not a caption.
// For fieldsets, returns the area frame, if the child is not a legend.
static nsIFrame*
GetAdjustedParentFrame(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIAtom* aParentFrameType,
nsIContent* aParentContent,
PRInt32 aChildIndex)
{
nsIContent *childContent = aParentContent->GetChildAt(aChildIndex);
nsIFrame* newParent = nsnull;
if (nsLayoutAtoms::tableOuterFrame == aParentFrameType) {
nsCOMPtr<nsIDOMHTMLTableCaptionElement> captionContent(do_QueryInterface(childContent));
// If the parent frame is an outer table, use the innner table
// as the parent unless the new content is a caption.
if (!captionContent)
aParentFrame->FirstChild(aPresContext, nsnull, &newParent);
}
else if (nsLayoutAtoms::fieldSetFrame == aParentFrameType) {
// If the parent is a fieldSet, use the fieldSet's area frame as the
// parent unless the new content is a legend.
nsCOMPtr<nsIDOMHTMLLegendElement> legendContent(do_QueryInterface(childContent));
if (!legendContent)
aParentFrame->FirstChild(aPresContext, nsnull, &newParent);
}
return (newParent) ? newParent : aParentFrame;
}
static nsresult InsertOutOfFlow(nsIPresContext* aPresContext,
const nsAbsoluteItems& aFrameItems,
nsIAtom* aChildListName) {
if (!aFrameItems.childList) {
return NS_OK;
}
nsIFrame* firstChild;
aFrameItems.containingBlock->FirstChild(aPresContext, aChildListName, &firstChild);
// Note that whether the frame construction context is doing an append or
// not is not helpful here, since it could be appending to some frame in
// the middle of the document, which means we're not necessarily appending
// to the children of the containing block.
//
// We need to make sure the 'append to the end of document' case is fast.
// So first test the last child of the containing block
nsIFrame* lastChild = nsLayoutUtils::GetLastSibling(firstChild);
if (lastChild) {
if (nsLayoutUtils::CompareTreePosition(lastChild->GetContent(),
aFrameItems.childList->GetContent(),
aFrameItems.containingBlock->GetContent()) < 0) {
// lastChild comes before the new children, so insert after lastChild
return aFrameItems.containingBlock->
AppendFrames(aPresContext, *aPresContext->GetPresShell(),
aChildListName, aFrameItems.childList);
}
}
nsIFrame* insertionPoint = nsnull;
// try the other children
for (nsIFrame* f = firstChild; f != lastChild; f = f->GetNextSibling()) {
if (nsLayoutUtils::CompareTreePosition(f->GetContent(),
aFrameItems.childList->GetContent(),
aFrameItems.containingBlock->GetContent()) > 0) {
// f comes after the new children, so stop here and insert after
// the previous frame
break;
}
insertionPoint = f;
}
return aFrameItems.containingBlock->
InsertFrames(aPresContext, *aPresContext->GetPresShell(),
aChildListName, insertionPoint, aFrameItems.childList);
}
static nsresult
InsertOutOfFlowFrames(const nsFrameConstructorState& aState,
nsIPresContext* aPresContext) {
// If there are new absolutely positioned child frames, then notify
// the parent
nsresult rv = InsertOutOfFlow(aPresContext, aState.mAbsoluteItems,
nsLayoutAtoms::absoluteList);
NS_ENSURE_SUCCESS(rv, rv);
// If there are new fixed positioned child frames, then notify
// the parent
rv = InsertOutOfFlow(aPresContext, aState.mFixedItems,
nsLayoutAtoms::fixedList);
NS_ENSURE_SUCCESS(rv, rv);
// If there are new floating child frames, then notify
// the parent
return InsertOutOfFlow(aPresContext, aState.mFloatedItems,
nsLayoutAtoms::floatList);
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentAppended(nsIPresContext* aPresContext,
nsIContent* aContainer,
PRInt32 aNewIndexInContainer)
{
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentAppended container=%p index=%d\n",
NS_STATIC_CAST(void*, aContainer), aNewIndexInContainer);
if (gReallyNoisyContentUpdates && aContainer) {
aContainer->List(stdout, 0);
}
}
#endif
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
#ifdef MOZ_XUL
if (aContainer) {
nsIBindingManager *bindingManager = mDocument->GetBindingManager();
nsCOMPtr<nsIAtom> tag;
PRInt32 namespaceID;
bindingManager->ResolveTag(aContainer, &namespaceID, getter_AddRefs(tag));
// Just ignore tree tags, anyway we don't create any frames for them.
if (tag == nsXULAtoms::treechildren ||
tag == nsXULAtoms::treeitem ||
tag == nsXULAtoms::treerow ||
(UseXBLForms() && ShouldIgnoreSelectChild(aContainer)))
return NS_OK;
}
#endif // MOZ_XUL
// Get the frame associated with the content
nsIFrame* parentFrame = GetFrameFor(shell, aPresContext, aContainer);
if (! parentFrame)
return NS_OK;
// See if we have an XBL insertion point. If so, then that's our
// real parent frame; if not, then the frame hasn't been built yet
// and we just bail.
//
nsIFrame* insertionPoint;
PRBool multiple = PR_FALSE;
GetInsertionPoint(shell, parentFrame, nsnull, &insertionPoint, &multiple);
if (! insertionPoint)
return NS_OK; // Don't build the frames.
PRBool hasInsertion = PR_FALSE;
if (!multiple) {
nsIBindingManager *bindingManager = nsnull;
nsIDocument* document = nsnull;
nsIContent *firstAppendedChild =
aContainer->GetChildAt(aNewIndexInContainer);
if (firstAppendedChild) {
document = firstAppendedChild->GetDocument();
}
if (document)
bindingManager = document->GetBindingManager();
if (bindingManager) {
nsCOMPtr<nsIContent> insParent;
bindingManager->GetInsertionParent(firstAppendedChild, getter_AddRefs(insParent));
if (insParent)
hasInsertion = PR_TRUE;
}
}
if (multiple || hasInsertion) {
// We have an insertion point. There are some additional tests we need to do
// in order to ensure that an append is a safe operation.
PRUint32 childCount = 0;
if (!multiple) {
// We may need to make multiple ContentInserted calls instead. A
// reasonable heuristic to employ (in order to maintain good performance)
// is to find out if the insertion point's content node contains any
// explicit children. If it does not, then it is highly likely that
// an append is occurring. (Note it is not definite, and there are insane
// cases we will not deal with by employing this heuristic, but it beats
// always falling back to multiple ContentInserted calls).
//
// In the multiple insertion point case, we know we're going to need to do
// multiple ContentInserted calls anyway.
childCount = insertionPoint->GetContent()->GetChildCount();
}
if (multiple || childCount > 0) {
// Now comes the fun part. For each appended child, we must obtain its
// insertion point and find its exact position within that insertion point.
// We then make a ContentInserted call with the correct computed index.
nsIContent* insertionContent = insertionPoint->GetContent();
PRUint32 containerCount = aContainer->GetChildCount();
for (PRUint32 i = aNewIndexInContainer; i < containerCount; i++) {
nsIContent *child = aContainer->GetChildAt(i);
if (multiple) {
// Filters are in effect, so the insertion point needs to be refetched for
// each child.
GetInsertionPoint(shell, parentFrame, child, &insertionPoint);
insertionContent = insertionPoint->GetContent();
}
// Construct an iterator to locate this child at its correct index.
ChildIterator iter, last;
for (ChildIterator::Init(insertionContent, &iter, &last);
iter != last;
++iter) {
nsIContent* item = nsCOMPtr<nsIContent>(*iter);
if (item == child)
// Call ContentInserted with this index.
ContentInserted(aPresContext, aContainer, nsnull, child,
iter.index(), mTempFrameTreeState, PR_FALSE);
}
}
return NS_OK;
}
}
parentFrame = insertionPoint;
// If the frame we are manipulating is a ``special'' frame (that
// is, one that's been created as a result of a block-in-inline
// situation) then do something different instead of just
// appending newly created frames. Note that only the
// first-in-flow is marked so we check before getting to the
// last-in-flow.
//
// We run into this situation occasionally while loading web
// pages, typically when some content generation tool has
// sprinkled invalid markup into the document. More often than
// not, we'll be able to just use the normal fast-path frame
// construction code, because the frames will be appended to the
// ``anonymous'' block that got created to parent the block
// children of the inline.
if (IsFrameSpecial(parentFrame)) {
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentAppended: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
// Since we're appending, we'll walk to the last anonymous frame
// that was created for the broken inline frame.
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
while (1) {
nsIFrame* sibling;
GetSpecialSibling(frameManager, parentFrame, &sibling);
if (! sibling)
break;
parentFrame = sibling;
}
// If this frame is the anonymous block frame, then all's well:
// just append frames as usual.
const nsStyleDisplay* display = parentFrame->GetStyleDisplay();
if (NS_STYLE_DISPLAY_BLOCK != display->mDisplay) {
// Nope, it's an inline, so just reframe the entire stinkin' mess if the
// content is a block. We _could_ do better here with a little more work...
// find out if the child is a block or inline, an inline means we don't have to reframe
nsIContent *child = aContainer->GetChildAt(aNewIndexInContainer);
PRBool needReframe = !child;
if (child && child->IsContentOfType(nsIContent::eELEMENT)) {
nsRefPtr<nsStyleContext> styleContext;
styleContext = ResolveStyleContext(aPresContext, parentFrame, child);
// XXX since the block child goes in the last inline of the sacred triad, frames would
// need to be moved into the 2nd triad (block) but that is more work, for now bail.
needReframe = styleContext->GetStyleDisplay()->IsBlockLevel();
}
if (needReframe)
return ReframeContainingBlock(aPresContext, parentFrame);
}
}
// Get the parent frame's last-in-flow
parentFrame = parentFrame->GetLastInFlow();
// If we didn't process children when we originally created the frame,
// then don't do any processing now
nsCOMPtr<nsIAtom> frameType;
parentFrame->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() == nsLayoutAtoms::objectFrame) {
// This handles APPLET, EMBED, and OBJECT
return NS_OK;
}
// Deal with inner/outer tables, fieldsets
parentFrame = ::GetAdjustedParentFrame(aPresContext, parentFrame, frameType,
aContainer, aNewIndexInContainer);
// Create some new frames
PRUint32 count;
nsIFrame* firstAppendedFrame = nsnull;
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, parentFrame),
GetFloatContainingBlock(aPresContext, parentFrame));
// See if the containing block has :first-letter style applied.
PRBool haveFirstLetterStyle, haveFirstLineStyle;
nsIFrame* containingBlock = state.mFloatedItems.containingBlock;
nsIContent* blockContent = containingBlock->GetContent();
nsStyleContext* blockSC = containingBlock->GetStyleContext();
HaveSpecialBlockStyle(aPresContext, blockContent, blockSC,
&haveFirstLetterStyle,
&haveFirstLineStyle);
if (haveFirstLetterStyle) {
// Before we get going, remove the current letter frames
RemoveLetterFrames(aPresContext, state.mPresShell,
state.mFrameManager, containingBlock);
}
// if the container is a table and a caption was appended, it needs to be put in
// the outer table frame's additional child list.
nsFrameItems captionItems;
PRUint32 i;
count = aContainer->GetChildCount();
for (i = aNewIndexInContainer; i < count; i++) {
nsIContent *childContent = aContainer->GetChildAt(i);
// construct a child of a table frame by putting it on a temporary list and then
// moving it into the appropriate list. This is more efficient than checking the display
// type of childContent. During the construction of a caption frame, the outer
// table frame will be used as its parent.
if (nsLayoutAtoms::tableFrame == frameType.get()) {
nsFrameItems tempItems;
ConstructFrame(shell, aPresContext, state, childContent, parentFrame, tempItems);
if (tempItems.childList) {
nsCOMPtr<nsIAtom> childFrameType;
tempItems.childList->GetFrameType(getter_AddRefs(childFrameType));
if (nsLayoutAtoms::tableCaptionFrame == childFrameType.get()) {
PRBool abortCaption = PR_FALSE;
// check if a caption already exists in captionItems, and if so, abort the caption
if (captionItems.childList) {
abortCaption = PR_TRUE;
}
else {
// check for a caption already appended to the outer table
nsIFrame* outerTable = parentFrame->GetParent();
if (outerTable) {
nsIFrame* existingCaption = nsnull;
outerTable->FirstChild(aPresContext, nsLayoutAtoms::captionList, &existingCaption);
if (existingCaption) {
abortCaption = PR_TRUE;
}
}
}
if (abortCaption) {
tempItems.childList->Destroy(aPresContext);
}
else {
captionItems.AddChild(tempItems.childList);
}
}
else {
frameItems.AddChild(tempItems.childList);
}
}
}
// Don't create child frames for iframes/frames, they should not
// display any content that they contain.
else if (nsLayoutAtoms::htmlFrameOuterFrame != frameType.get()) {
// Construct a child frame (that does not have a table as parent)
ConstructFrame(shell, aPresContext, state, childContent, parentFrame, frameItems);
}
}
// We built some new frames. Initialize any newly-constructed bindings.
mDocument->GetBindingManager()->ProcessAttachedQueue();
// process the current pseudo frame state
if (!state.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, state.mPseudoFrames, frameItems);
}
if (haveFirstLineStyle) {
// It's possible that some of the new frames go into a
// first-line frame. Look at them and see...
AppendFirstLineFrames(shell, aPresContext, state, aContainer, parentFrame,
frameItems);
}
nsresult result = NS_OK;
firstAppendedFrame = frameItems.childList;
if (!firstAppendedFrame) {
firstAppendedFrame = captionItems.childList;
}
// Notify the parent frame passing it the list of new frames
if (NS_SUCCEEDED(result) && firstAppendedFrame) {
// Perform special check for diddling around with the frames in
// a special inline frame.
// XXX Bug 18366
// Although select frame are inline we do not want to call
// WipeContainingBlock because it will throw away the entire selct frame and
// start over which is something we do not want to do
//
nsCOMPtr<nsIDOMHTMLSelectElement> selectContent(do_QueryInterface(aContainer));
if (!selectContent) {
if (WipeContainingBlock(aPresContext, state, blockContent, parentFrame,
frameItems.childList)) {
return NS_OK;
}
}
// Append the flowed frames to the principal child list, tables need special treatment
if (nsLayoutAtoms::tableFrame == frameType.get()) {
if (captionItems.childList) { // append the caption to the outer table
nsIFrame* outerTable = parentFrame->GetParent();
if (outerTable) {
AppendFrames(aPresContext, shell, state.mFrameManager, aContainer,
outerTable, captionItems.childList);
}
}
if (frameItems.childList) { // append children of the inner table
AppendFrames(aPresContext, shell, state.mFrameManager, aContainer,
parentFrame, frameItems.childList);
}
}
else {
AppendFrames(aPresContext, shell, state.mFrameManager, aContainer,
parentFrame, firstAppendedFrame);
}
InsertOutOfFlowFrames(state, aPresContext);
// Recover first-letter frames
if (haveFirstLetterStyle) {
RecoverLetterFrames(shell, aPresContext, state, containingBlock);
}
}
// Here we have been notified that content has been appended so if
// the select now has a single item we need to go in and removed
// the dummy frame.
nsCOMPtr<nsIDOMHTMLSelectElement> sel(do_QueryInterface(aContainer));
if (sel) {
nsIContent *childContent = aContainer->GetChildAt(aNewIndexInContainer);
if (childContent) {
RemoveDummyFrameFromSelect(aPresContext, shell, aContainer,
childContent, sel);
}
}
#ifdef DEBUG
if (gReallyNoisyContentUpdates) {
nsIFrameDebug* fdbg = nsnull;
CallQueryInterface(parentFrame, &fdbg);
if (fdbg) {
printf("nsCSSFrameConstructor::ContentAppended: resulting frame model:\n");
fdbg->List(aPresContext, stdout, 0);
}
}
#endif
return NS_OK;
}
nsresult
nsCSSFrameConstructor::AddDummyFrameToSelect(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsFrameConstructorState& aState,
nsIFrame* aListFrame,
nsIFrame* aParentFrame,
nsFrameItems* aChildItems,
nsIContent* aContainer,
nsIDOMHTMLSelectElement* aSelectElement)
{
PRUint32 numOptions = 0;
nsresult rv = aSelectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(rv) && 0 == numOptions) {
nsISelectControlFrame* listFrame = nsnull;
CallQueryInterface(aListFrame, &listFrame);
if (listFrame) {
nsIFrame* dummyFrame;
listFrame->GetDummyFrame(&dummyFrame);
if (!dummyFrame) {
nsStyleContext* styleContext = aParentFrame->GetStyleContext();
nsIFrame* generatedFrame = nsnull;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState,
aParentFrame, aContainer,
styleContext,
nsCSSAnonBoxes::dummyOption,
nsnull, &generatedFrame)) {
// Add the generated frame to the child list
if (aChildItems) {
aChildItems->AddChild(generatedFrame);
} else {
nsCOMPtr<nsIFrameManager> frameManager;
aPresShell->GetFrameManager(getter_AddRefs(frameManager));
if (frameManager) {
frameManager->AppendFrames(aParentFrame, nsnull, generatedFrame);
}
}
listFrame->SetDummyFrame(generatedFrame);
return NS_OK;
}
}
}
}
return NS_ERROR_FAILURE;
}
// defined below
static nsresult
DeletingFrameSubtree(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aFrame);
nsresult
nsCSSFrameConstructor::RemoveDummyFrameFromSelect(nsIPresContext* aPresContext,
nsIPresShell * aPresShell,
nsIContent* aContainer,
nsIContent* aChild,
nsIDOMHTMLSelectElement * aSelectElement)
{
// Check to see if this is the first thing we have added to this frame.
PRUint32 numOptions = 0;
nsresult rv = aSelectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(rv) && numOptions > 0) {
nsIFrame* frame;
aPresShell->GetPrimaryFrameFor(aContainer, &frame);
if (frame) {
nsISelectControlFrame* listFrame = nsnull;
CallQueryInterface(frame, &listFrame);
if (listFrame) {
nsIFrame* dummyFrame;
listFrame->GetDummyFrame(&dummyFrame);
if (dummyFrame) {
listFrame->SetDummyFrame(nsnull);
// get the child's parent frame (which ought to be the list frame)
nsIFrame* parentFrame = dummyFrame->GetParent();
nsCOMPtr<nsIFrameManager> frameManager;
aPresShell->GetFrameManager(getter_AddRefs(frameManager));
DeletingFrameSubtree(aPresContext, aPresShell, frameManager,
dummyFrame);
frameManager->RemoveFrame(parentFrame, nsnull, dummyFrame);
return NS_OK;
}
}
}
}
return NS_ERROR_FAILURE;
}
// Return TRUE if the insertion of aChild into aParent1,2 should force a reframe. aParent1 is
// the special inline container which contains a block. aParentFrame is approximately aParent1's
// primary frame and will be set to the correct parent of aChild if a reframe is not necessary.
// aParent2 is aParentFrame's content. aPrevSibling will be set to the correct prev sibling of
// aChild if a reframe is not necessary.
PRBool
nsCSSFrameConstructor::NeedSpecialFrameReframe(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aParent1,
nsIContent* aParent2,
nsIFrame*& aParentFrame,
nsIContent* aChild,
PRInt32 aIndexInContainer,
nsIFrame*& aPrevSibling,
nsIFrame* aNextSibling)
{
NS_ENSURE_TRUE(aPrevSibling || aNextSibling, PR_TRUE);
if (!IsInlineFrame2(aParentFrame))
return PR_FALSE;
// find out if aChild is a block or inline
PRBool childIsBlock = PR_FALSE;
if (aChild->IsContentOfType(nsIContent::eELEMENT)) {
nsRefPtr<nsStyleContext> styleContext;
styleContext = ResolveStyleContext(aPresContext, aParentFrame, aChild);
childIsBlock = styleContext->GetStyleDisplay()->IsBlockLevel();
}
nsIFrame* prevParent; // parent of prev sibling
nsIFrame* nextParent; // parent of next sibling
if (childIsBlock) {
if (aPrevSibling) {
prevParent = aPrevSibling->GetParent();
NS_ASSERTION(prevParent, "program error - null parent frame");
if (IsInlineFrame2(prevParent)) { // prevParent is an inline
// XXX we need to find out if prevParent is the 1st inline or the last. If it
// is the 1st, then aChild and the frames after aPrevSibling within the 1st inline
// need to be moved to the block(inline). If it is the last, then aChild and the
// frames before aPrevSibling within the last need to be moved to the block(inline).
return PR_TRUE; // For now, bail.
}
aParentFrame = prevParent; // prevParent is a block, put aChild there
}
else {
nsIFrame* nextSibling = (aIndexInContainer >= 0)
? FindNextSibling(aPresShell, aParent2, aParentFrame, aIndexInContainer)
: FindNextAnonymousSibling(aPresShell, mDocument, aParent1, aChild);
if (nextSibling) {
nextParent = nextSibling->GetParent();
NS_ASSERTION(nextParent, "program error - null parent frame");
if (IsInlineFrame2(nextParent)) {
// XXX we need to move aChild, aNextSibling and all the frames after aNextSibling within
// the 1st inline to the block(inline).
return PR_TRUE; // for now, bail
}
// put aChild in nextParent which is the block(inline) and leave aPrevSibling null
aParentFrame = nextParent;
}
}
}
else { // aChild is an inline
if (aPrevSibling) {
prevParent = aPrevSibling->GetParent();
NS_ASSERTION(prevParent, "program error - null parent frame");
if (IsInlineFrame2(prevParent)) { // prevParent is an inline
// aChild goes into the same inline frame as aPrevSibling
aParentFrame = aPrevSibling->GetParent();
NS_ASSERTION(aParentFrame, "program error - null parent frame");
}
else { // prevParent is a block
nsIFrame* nextSibling = (aIndexInContainer >= 0)
? FindNextSibling(aPresShell, aParent2, aParentFrame, aIndexInContainer)
: FindNextAnonymousSibling(aPresShell, mDocument, aParent1, aChild);
if (nextSibling) {
nextParent = nextSibling->GetParent();
NS_ASSERTION(nextParent, "program error - null parent frame");
if (IsInlineFrame2(nextParent)) {
// nextParent is the ending inline frame. Put aChild there and
// set aPrevSibling to null so aChild is its first element.
aParentFrame = nextSibling->GetParent();
NS_ASSERTION(aParentFrame, "program error - null parent frame");
aPrevSibling = nsnull;
}
else { // nextParent is a block
// prevParent and nextParent should be the same, and aChild goes there
NS_ASSERTION(prevParent == nextParent, "special frame error");
aParentFrame = prevParent;
}
}
else {
// there is no ending enline frame (which should never happen) but aChild needs to go
// there, so for now just bail and force a reframe.
NS_ASSERTION(PR_FALSE, "no last inline frame");
return PR_TRUE;
}
}
}
// else aChild goes into the 1st inline frame which is aParentFrame
}
return PR_FALSE;
}
#ifdef MOZ_XUL
enum content_operation
{
CONTENT_INSERTED,
CONTENT_REMOVED
};
// Helper function to lookup the listbox body frame and send a notification
// for insertion or removal of content
static
PRBool NotifyListBoxBody(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer,
nsIDocument* aDocument,
nsIFrame* aChildFrame,
PRBool aUseXBLForms,
content_operation aOperation)
{
if (!aContainer)
return PR_FALSE;
nsCOMPtr<nsIAtom> tag;
aChild->GetTag(getter_AddRefs(tag));
if (tag == nsXULAtoms::listitem) {
nsListBoxBodyFrame* listBoxBody = nsnull;
if (aChildFrame) {
// There is a frame for the removed content, so its parent frame is the listboxbody
nsIFrame* parentFrame = aChildFrame->GetParent();
if (parentFrame)
listBoxBody = (nsListBoxBodyFrame*)parentFrame;
} else {
// There is no frame for the removed/inserted content, so we need to dig
// further for the body frame. XBL insertion may not yet have taken
// place here (in the case of replacements), so our only connection
// to the listbox content is through aContainer. Use the boxObject
// to get to the listboxbody frame so we can notify it of the removal or
// insertion.
nsCOMPtr<nsIDOMXULElement> xulEl(do_QueryInterface(aContainer));
if (xulEl) {
nsCOMPtr<nsIBoxObject> boxObject;
xulEl->GetBoxObject(getter_AddRefs(boxObject));
nsCOMPtr<nsIListBoxObject> listBoxObject(do_QueryInterface(boxObject));
nsIListBoxObject* bodyBoxObject = nsnull;
listBoxObject->GetListboxBody(&bodyBoxObject);
listBoxBody = NS_STATIC_CAST(nsListBoxBodyFrame*, bodyBoxObject);
NS_IF_RELEASE(bodyBoxObject);
}
}
if (listBoxBody)
if (aOperation == CONTENT_REMOVED)
listBoxBody->OnContentRemoved(aPresContext, aChildFrame, aIndexInContainer);
else
listBoxBody->OnContentInserted(aPresContext, aChild);
return PR_TRUE;
}
PRInt32 namespaceID;
aDocument->GetBindingManager()->ResolveTag(aContainer, &namespaceID,
getter_AddRefs(tag));
// Just ignore tree tags, anyway we don't create any frames for them.
if (tag == nsXULAtoms::treechildren ||
tag == nsXULAtoms::treeitem ||
tag == nsXULAtoms::treerow ||
(aUseXBLForms && ShouldIgnoreSelectChild(aContainer)))
return PR_TRUE;
return PR_FALSE;
}
#endif // MOZ_XUL
NS_IMETHODIMP
nsCSSFrameConstructor::ContentInserted(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIFrame* aContainerFrame,
nsIContent* aChild,
PRInt32 aIndexInContainer,
nsILayoutHistoryState* aFrameState,
PRBool aInContentReplaced)
{
// XXXldb Do we need to re-resolve style to handle the CSS2 + combinator and
// the :empty pseudo-class?
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted container=%p child=%p index=%d\n",
NS_STATIC_CAST(void*, aContainer),
NS_STATIC_CAST(void*, aChild),
aIndexInContainer);
if (gReallyNoisyContentUpdates) {
(aContainer ? aContainer : aChild)->List(stdout, 0);
}
}
#endif
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
#ifdef MOZ_XUL
if (NotifyListBoxBody(aPresContext, aContainer, aChild, aIndexInContainer,
mDocument, nsnull, UseXBLForms(), CONTENT_INSERTED))
return NS_OK;
#endif // MOZ_XUL
// If we have a null parent, then this must be the document element
// being inserted
if (! aContainer) {
nsIContent *docElement = mDocument->GetRootContent();
if (aChild == docElement) {
NS_PRECONDITION(nsnull == mInitialContainingBlock, "initial containing block already created");
if (!mDocElementContainingBlock)
return NS_OK; // We get into this situation when an XBL binding is asynchronously
// applied to the root tag (e.g., <window> in XUL). It's ok. We can
// just bail here because the root will really be built later during
// InitialReflow.
// Get the style context of the containing block frame
nsStyleContext* containerStyle = mDocElementContainingBlock->GetStyleContext();
// Create frames for the document element and its child elements
nsIFrame* docElementFrame;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock, nsnull, nsnull, aFrameState);
ConstructDocElementFrame(shell, aPresContext,
state,
docElement,
mDocElementContainingBlock,
containerStyle,
docElementFrame);
// Set the initial child list for the parent
mDocElementContainingBlock->SetInitialChildList(aPresContext,
nsnull,
docElementFrame);
// Tell the fixed containing block about its 'fixed' frames
if (state.mFixedItems.childList) {
mFixedContainingBlock->SetInitialChildList(aPresContext,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
#ifdef DEBUG
if (gReallyNoisyContentUpdates && docElementFrame) {
nsIFrameDebug* fdbg = nsnull;
CallQueryInterface(docElementFrame, &fdbg);
if (fdbg) {
printf("nsCSSFrameConstructor::ContentInserted: resulting frame model:\n");
fdbg->List(aPresContext, stdout, 0);
}
}
#endif
}
mDocument->GetBindingManager()->ProcessAttachedQueue();
// otherwise this is not a child of the root element, and we
// won't let it have a frame.
return NS_OK;
}
// Otherwise, we've got parent content. Find its frame.
nsIFrame* parentFrame = aContainerFrame;
if (!parentFrame) {
parentFrame = GetFrameFor(shell, aPresContext, aContainer);
if (! parentFrame)
return NS_OK; // XXXwaterson will this break selects? (See ``Here
// we have been notified...'' below.)
}
// See if we have an XBL insertion point. If so, then that's our
// real parent frame; if not, then the frame hasn't been built yet
// and we just bail.
nsIFrame* insertionPoint;
GetInsertionPoint(shell, parentFrame, aChild, &insertionPoint);
if (! insertionPoint)
return NS_OK; // Don't build the frames.
parentFrame = insertionPoint;
// Find the frame that precedes the insertion point. Walk backwards
// from the parent frame to get the parent content, because if an
// XBL insertion point is involved, we'll need to use _that_ to find
// the preceding frame.
nsIContent* container = parentFrame->GetContent();
// XXX if the insertionPoint was different from the original
// parentFrame, then aIndexInContainer is most likely completely
// wrong. What we need to do here is remember the original index,
// then as we insert, search the child list where we're about to put
// the new frame to make sure that it appears after any siblings
// with a lower index, and before any siblings with a higher
// index. Same with FindNextSibling(), below.
nsIFrame* prevSibling = (aIndexInContainer >= 0)
? FindPreviousSibling(shell, container, parentFrame, aIndexInContainer, aChild)
: FindPreviousAnonymousSibling(shell, mDocument, aContainer, aChild);
PRBool isAppend = PR_FALSE;
nsIFrame* nextSibling = nsnull;
// If there is no previous sibling, then find the frame that follows
if (! prevSibling) {
nextSibling = (aIndexInContainer >= 0)
? FindNextSibling(shell, container, parentFrame, aIndexInContainer, aChild)
: FindNextAnonymousSibling(shell, mDocument, aContainer, aChild);
}
PRBool handleSpecialFrame = IsFrameSpecial(parentFrame) && !aInContentReplaced;
// Now, find the geometric parent so that we can handle
// continuations properly. Use the prev sibling if we have it;
// otherwise use the next sibling.
if (prevSibling) {
if (!handleSpecialFrame)
parentFrame = prevSibling->GetParent();
}
else if (nextSibling) {
if (!handleSpecialFrame)
parentFrame = nextSibling->GetParent();
}
else {
// No previous or next sibling, so treat this like an appended frame.
isAppend = PR_TRUE;
// If we didn't process children when we originally created the frame,
// then don't do any processing now
nsCOMPtr<nsIAtom> frameType;
parentFrame->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() == nsLayoutAtoms::objectFrame) {
// This handles APPLET, EMBED, and OBJECT
return NS_OK;
}
// Deal with inner/outer tables, fieldsets
parentFrame = ::GetAdjustedParentFrame(aPresContext, parentFrame, frameType,
aContainer, aIndexInContainer);
}
// If the frame we are manipulating is a special frame then see if we need to reframe
// NOTE: if we are in ContentReplaced, then don't reframe as we are already doing just that!
if (handleSpecialFrame) {
// a special inline frame has propagated some of its children upward to be children
// of the block and those frames may need to move around. Sometimes we may need to reframe
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
// if we don't need to reframe then set parentFrame and prevSibling to the correct values
if (NeedSpecialFrameReframe(shell, aPresContext, aContainer, container, parentFrame,
aChild, aIndexInContainer, prevSibling, nextSibling)) {
return ReframeContainingBlock(aPresContext, parentFrame);
}
}
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, parentFrame),
GetFloatContainingBlock(aPresContext, parentFrame),
aFrameState);
// Recover state for the containing block - we need to know if
// it has :first-letter or :first-line style applied to it. The
// reason we care is that the internal structure in these cases
// is not the normal structure and requires custom updating
// logic.
nsIFrame* containingBlock = state.mFloatedItems.containingBlock;
nsStyleContext* blockSC;
nsIContent* blockContent = nsnull;
PRBool haveFirstLetterStyle = PR_FALSE;
PRBool haveFirstLineStyle = PR_FALSE;
// In order to shave off some cycles, we only dig up the
// containing block haveFirst* flags if the parent frame where
// the insertion/append is occuring is an inline or block
// container. For other types of containers this isn't relevant.
const nsStyleDisplay* parentDisplay = parentFrame->GetStyleDisplay();
// Examine the parentFrame where the insertion is taking
// place. If its a certain kind of container then some special
// processing is done.
if ((NS_STYLE_DISPLAY_BLOCK == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE_BLOCK == parentDisplay->mDisplay)) {
// Recover the special style flags for the containing block
blockSC = containingBlock->GetStyleContext();
blockContent = containingBlock->GetContent();
HaveSpecialBlockStyle(aPresContext, blockContent, blockSC,
&haveFirstLetterStyle,
&haveFirstLineStyle);
if (haveFirstLetterStyle) {
// Get the correct parentFrame and prevSibling - if a
// letter-frame is present, use its parent.
nsCOMPtr<nsIAtom> parentFrameType;
parentFrame->GetFrameType(getter_AddRefs(parentFrameType));
if (parentFrameType.get() == nsLayoutAtoms::letterFrame) {
if (prevSibling)
prevSibling = parentFrame;
parentFrame = parentFrame->GetParent();
}
// Remove the old letter frames before doing the insertion
RemoveLetterFrames(aPresContext, state.mPresShell,
state.mFrameManager,
state.mFloatedItems.containingBlock);
// Check again to see if the frame we are manipulating is part
// of a block-in-inline hierarchy.
if (IsFrameSpecial(parentFrame)) {
nsCOMPtr<nsIContent> parentContainer = blockContent->GetParent();
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special inline\n");
printf(" ==> blockContent=%p, parentContainer=%p\n",
NS_STATIC_CAST(void*, blockContent),
NS_STATIC_CAST(void*, parentContainer));
}
#endif
if (parentContainer) {
PRInt32 ix = parentContainer->IndexOf(blockContent);
ContentReplaced(aPresContext, parentContainer, blockContent, blockContent, ix);
}
else {
// XXX uh oh. the block that needs reworking has no parent...
NS_NOTREACHED("block that needs recreation has no parent");
}
return NS_OK;
}
}
}
ConstructFrame(shell, aPresContext, state, aChild, parentFrame, frameItems);
// Now that we've created frames, run the attach queue.
//XXXwaterson should we do this after we've processed pseudos, too?
mDocument->GetBindingManager()->ProcessAttachedQueue();
// process the current pseudo frame state
if (!state.mPseudoFrames.IsEmpty())
ProcessPseudoFrames(aPresContext, state.mPseudoFrames, frameItems);
// XXX Bug 19949
// Although select frame are inline we do not want to call
// WipeContainingBlock because it will throw away the entire select frame and
// start over which is something we do not want to do
//
nsCOMPtr<nsIDOMHTMLSelectElement> selectContent = do_QueryInterface(aContainer);
if (!selectContent) {
// Perform special check for diddling around with the frames in
// a special inline frame.
if (WipeContainingBlock(aPresContext, state, blockContent, parentFrame, frameItems.childList))
return NS_OK;
}
if (haveFirstLineStyle) {
// It's possible that the new frame goes into a first-line
// frame. Look at it and see...
if (isAppend) {
// Use append logic when appending
AppendFirstLineFrames(shell, aPresContext, state, aContainer, parentFrame,
frameItems);
}
else {
// Use more complicated insert logic when inserting
InsertFirstLineFrames(aPresContext, state, aContainer,
containingBlock, &parentFrame,
prevSibling, frameItems);
}
}
nsIFrame* newFrame = frameItems.childList;
if (NS_SUCCEEDED(rv) && newFrame) {
// Notify the parent frame
if (isAppend) {
AppendFrames(aPresContext, shell, state.mFrameManager,
aContainer, parentFrame, newFrame);
}
else {
if (!prevSibling) {
// We're inserting the new frame as the first child. See if the
// parent has a :before pseudo-element
nsIFrame* firstChild;
parentFrame->FirstChild(aPresContext, nsnull, &firstChild);
if (firstChild &&
nsLayoutUtils::IsGeneratedContentFor(aContainer, firstChild,
nsCSSPseudoElements::before)) {
// Insert the new frames after the :before pseudo-element
prevSibling = firstChild;
}
}
// check for a table caption which goes on an additional child list
nsIFrame* outerTableFrame;
if (GetCaptionAdjustedParent(parentFrame, newFrame, &outerTableFrame)) {
// XXXwaterson this seems wrong; i.e., how can we assume
// that appending is the right thing to do here?
state.mFrameManager->AppendFrames(outerTableFrame,
nsLayoutAtoms::captionList, newFrame);
}
else {
state.mFrameManager->InsertFrames(parentFrame,
nsnull, prevSibling, newFrame);
}
}
InsertOutOfFlowFrames(state, aPresContext);
if (haveFirstLetterStyle) {
// Recover the letter frames for the containing block when
// it has first-letter style.
RecoverLetterFrames(shell, aPresContext, state,
state.mFloatedItems.containingBlock);
}
}
// Here we have been notified that content has been insert
// so if the select now has a single item
// we need to go in and removed the dummy frame
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement = do_QueryInterface(aContainer);
if (selectElement)
RemoveDummyFrameFromSelect(aPresContext, shell, aContainer, aChild, selectElement);
#ifdef DEBUG
if (gReallyNoisyContentUpdates && parentFrame) {
nsIFrameDebug* fdbg = nsnull;
CallQueryInterface(parentFrame, &fdbg);
if (fdbg) {
printf("nsCSSFrameConstructor::ContentInserted: resulting frame model:\n");
fdbg->List(aPresContext, stdout, 0);
}
}
#endif
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentReplaced(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aOldChild,
nsIContent* aNewChild,
PRInt32 aIndexInContainer)
{
// XXX For now, do a brute force remove and insert.
nsresult res = ContentRemoved(aPresContext, aContainer,
aOldChild, aIndexInContainer, PR_TRUE);
if (NS_SUCCEEDED(res)) {
res = ContentInserted(aPresContext, aContainer, nsnull,
aNewChild, aIndexInContainer, nsnull, PR_TRUE);
}
return res;
}
/**
* Called when a frame subtree is about to be deleted. Two important
* things happen:
*
* 1. For each frame in the subtree, we remove the mapping from the
* content object to its frame
*
* 2. For child frames that have been moved out of the flow, we
* enqueue the out-of-frame for deletion *if* the out-of-flow frame's
* geometric parent is not in |aRemovedFrame|'s hierarchy (e.g., an
* absolutely positioned element that has been promoted to be a direct
* descendant of an area frame).
*
* Note: this function should only be called by DeletingFrameSubtree()
*
* @param aRemovedFrame this is the frame that was removed from the
* content model. As we recurse we need to remember this so we
* can check if out-of-flow frames are a descendent of the frame
* being removed
* @param aFrame the local subtree that is being deleted. This is initially
* the same as aRemovedFrame, but as we recurse down the tree
* this changes
*/
static nsresult
DoDeletingFrameSubtree(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsVoidArray& aDestroyQueue,
nsIFrame* aRemovedFrame,
nsIFrame* aFrame)
{
NS_PRECONDITION(aFrameManager, "no frame manager");
// Remove the mapping from the content object to its frame
nsIContent* content = aFrame->GetContent();
if (content) {
aFrameManager->SetPrimaryFrameFor(content, nsnull);
aFrame->RemovedAsPrimaryFrame(aPresContext);
aFrameManager->ClearAllUndisplayedContentIn(content);
}
// Walk aFrame's child frames
nsCOMPtr<nsIAtom> childListName;
PRInt32 childListIndex = 0;
do {
// Walk aFrame's child frames looking for placeholder frames
nsIFrame* childFrame;
aFrame->FirstChild(aPresContext, childListName, &childFrame);
while (childFrame) {
// The subtree we need to follow to get to the children; by
// default, the childFrame.
nsIFrame* subtree = childFrame;
// See if it's a placeholder frame
nsCOMPtr<nsIAtom> frameType;
childFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::placeholderFrame == frameType.get()) {
// Get the out-of-flow frame
nsIFrame* outOfFlowFrame = ((nsPlaceholderFrame*)childFrame)->GetOutOfFlowFrame();
NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame");
// Remove the mapping from the out-of-flow frame to its placeholder
aFrameManager->UnregisterPlaceholderFrame((nsPlaceholderFrame*)childFrame);
// Destroy the out-of-flow frame only if aRemovedFrame is _not_
// one of its ancestor frames or if it is a popup frame.
// If aRemovedFrame is an ancestor of the out-of-flow frame, then
// the out-of-flow frame will be destroyed by aRemovedFrame.
const nsStyleDisplay* display = outOfFlowFrame->GetStyleDisplay();
if (display->mDisplay == NS_STYLE_DISPLAY_POPUP ||
!nsLayoutUtils::IsProperAncestorFrame(aRemovedFrame, outOfFlowFrame)) {
if (aDestroyQueue.IndexOf(outOfFlowFrame) < 0)
aDestroyQueue.AppendElement(outOfFlowFrame);
}
// We want to descend into the out-of-flow frame's subtree,
// not the placeholder frame's!
subtree = outOfFlowFrame;
}
// Recursively find and delete any of its out-of-flow frames,
// and remove the mapping from content objects to frames
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager, aDestroyQueue,
aRemovedFrame, subtree);
// Get the next sibling child frame
childFrame = childFrame->GetNextSibling();
}
aFrame->GetAdditionalChildListName(childListIndex++, getter_AddRefs(childListName));
} while (childListName);
return NS_OK;
}
/**
* Called when a frame is about to be deleted. Calls DoDeletingFrameSubtree()
* for aFrame and each of its continuing frames
*/
static nsresult
DeletingFrameSubtree(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aFrame)
{
// If there's no frame manager it's probably because the pres shell is
// being destroyed
NS_ENSURE_TRUE(aFrame, NS_OK); // XXXldb Remove this sometime in the future.
if (aFrameManager) {
nsAutoVoidArray destroyQueue;
// If it's a "special" block-in-inline frame, then we need to
// remember to delete our special siblings, too. Since every one of
// the next-in-flows has the same special sibling, just do this
// once, rather than in the loop below.
if (IsFrameSpecial(aFrame)) {
nsIFrame* specialSibling;
GetSpecialSibling(aFrameManager, aFrame, &specialSibling);
if (specialSibling)
DeletingFrameSubtree(aPresContext, aPresShell, aFrameManager,
specialSibling);
}
do {
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager,
destroyQueue, aFrame, aFrame);
// If it's split, then get the continuing frame. Note that we only do
// this for the top-most frame being deleted. Don't do it if we're
// recursing over a subtree, because those continuing frames should be
// found as part of the walk over the top-most frame's continuing frames.
// Walking them again will make this an N^2/2 algorithm
aFrame->GetNextInFlow(&aFrame);
} while (aFrame);
// Now destroy any frames that have been enqueued for destruction.
for (PRInt32 i = destroyQueue.Count() - 1; i >= 0; --i) {
nsIFrame* outOfFlowFrame = NS_STATIC_CAST(nsIFrame*, destroyQueue[i]);
#ifdef MOZ_XUL
const nsStyleDisplay* display = outOfFlowFrame->GetStyleDisplay();
if (display->mDisplay == NS_STYLE_DISPLAY_POPUP) {
// Locate the root popup set and remove ourselves from the popup set's list
// of popup frames.
nsIFrame* rootFrame;
aFrameManager->GetRootFrame(&rootFrame);
if (rootFrame)
rootFrame->FirstChild(aPresContext, nsnull, &rootFrame);
nsCOMPtr<nsIRootBox> rootBox(do_QueryInterface(rootFrame));
NS_ASSERTION(rootBox, "unexpected null pointer");
if (rootBox) {
nsIFrame* popupSetFrame;
rootBox->GetPopupSetFrame(&popupSetFrame);
NS_ASSERTION(popupSetFrame, "unexpected null pointer");
if (popupSetFrame) {
nsCOMPtr<nsIPopupSetFrame> popupSet(do_QueryInterface(popupSetFrame));
NS_ASSERTION(popupSet, "unexpected null pointer");
if (popupSet)
popupSet->RemovePopupFrame(outOfFlowFrame);
}
}
} else
#endif
{
// Get the out-of-flow frame's parent
nsIFrame* parentFrame = outOfFlowFrame->GetParent();
// Get the child list name for the out-of-flow frame
nsCOMPtr<nsIAtom> listName;
GetChildListNameFor(aPresContext, parentFrame, outOfFlowFrame,
getter_AddRefs(listName));
// Ask the parent to delete the out-of-flow frame
aFrameManager->RemoveFrame(parentFrame,
listName, outOfFlowFrame);
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::RemoveMappingsForFrameSubtree(nsIPresContext* aPresContext,
nsIFrame* aRemovedFrame,
nsILayoutHistoryState* aFrameState)
{
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
nsCOMPtr<nsIFrameManager> frameManager;
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Save the frame tree's state before deleting it
CaptureStateFor(aPresContext, aRemovedFrame, mTempFrameTreeState);
return DeletingFrameSubtree(aPresContext, presShell, frameManager, aRemovedFrame);
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentRemoved(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer,
PRBool aInContentReplaced)
{
// XXXldb Do we need to re-resolve style to handle the CSS2 + combinator and
// the :empty pseudo-class?
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentRemoved container=%p child=%p index=%d\n",
NS_STATIC_CAST(void*, aContainer),
NS_STATIC_CAST(void*, aChild),
aIndexInContainer);
if (gReallyNoisyContentUpdates) {
aContainer->List(stdout, 0);
}
}
#endif
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
nsresult rv = NS_OK;
// Find the child frame that maps the content
nsIFrame* childFrame;
shell->GetPrimaryFrameFor(aChild, &childFrame);
if (! childFrame) {
frameManager->ClearUndisplayedContentIn(aChild, aContainer);
}
// When the last item is removed from a select,
// we need to add a pseudo frame so select gets sized as the best it can
// so here we see if it is a select and then we get the number of options
if (aContainer && childFrame) {
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement = do_QueryInterface(aContainer);
if (selectElement) {
// XXX temp needed only native controls
nsIFrame* selectFrame;
// XXX temp needed only native controls
shell->GetPrimaryFrameFor(aContainer, &selectFrame);
// For "select" add the pseudo frame after the last item is deleted
nsIFrame* parentFrame = childFrame->GetParent();
if (shell && parentFrame && parentFrame != selectFrame) {
nsFrameConstructorState state(aPresContext,
nsnull, nsnull, nsnull);
AddDummyFrameToSelect(aPresContext, shell, state,
selectFrame, parentFrame, nsnull,
aContainer, selectElement);
}
}
}
#ifdef MOZ_XUL
if (NotifyListBoxBody(aPresContext, aContainer, aChild, aIndexInContainer,
mDocument, childFrame, UseXBLForms(), CONTENT_REMOVED))
return NS_OK;
#endif // MOZ_XUL
if (childFrame) {
// If the frame we are manipulating is a special frame then do
// something different instead of just inserting newly created
// frames.
// NOTE: if we are in ContentReplaced,
// then do not reframe as we are already doing just that!
if (IsFrameSpecial(childFrame) && !aInContentReplaced) {
// We are pretty harsh here (and definitely not optimal) -- we
// wipe out the entire containing block and recreate it from
// scratch. The reason is that because we know that a special
// inline frame has propagated some of its children upward to be
// children of the block and that those frames may need to move
// around. This logic guarantees a correct answer.
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentRemoved: childFrame=");
nsFrame::ListTag(stdout, childFrame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, childFrame);
}
// Get the childFrame's parent frame
nsIFrame* parentFrame = childFrame->GetParent();
// See if we have an XBL insertion point. If so, then that's our
// real parent frame; if not, then the frame hasn't been built yet
// and we just bail.
nsIFrame* insertionPoint;
GetInsertionPoint(shell, parentFrame, aChild, &insertionPoint);
if (! insertionPoint)
return NS_OK;
parentFrame = insertionPoint;
// Examine the containing-block for the removed content and see if
// :first-letter style applies.
nsIFrame* containingBlock =
GetFloatContainingBlock(aPresContext, parentFrame);
nsStyleContext* blockSC = containingBlock->GetStyleContext();
nsIContent* blockContent = containingBlock->GetContent();
PRBool haveFLS = HaveFirstLetterStyle(aPresContext, blockContent, blockSC);
if (haveFLS) {
// Trap out to special routine that handles adjusting a blocks
// frame tree when first-letter style is present.
#ifdef NOISY_FIRST_LETTER
printf("ContentRemoved: containingBlock=");
nsFrame::ListTag(stdout, containingBlock);
printf(" parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" childFrame=");
nsFrame::ListTag(stdout, childFrame);
printf("\n");
#endif
// First update the containing blocks structure by removing the
// existing letter frames. This makes the subsequent logic
// simpler.
RemoveLetterFrames(aPresContext, shell, frameManager, containingBlock);
// Recover childFrame and parentFrame
shell->GetPrimaryFrameFor(aChild, &childFrame);
if (!childFrame) {
frameManager->ClearUndisplayedContentIn(aChild, aContainer);
return NS_OK;
}
parentFrame = childFrame->GetParent();
#ifdef NOISY_FIRST_LETTER
printf(" ==> revised parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" childFrame=");
nsFrame::ListTag(stdout, childFrame);
printf("\n");
#endif
}
#ifdef DEBUG
if (gReallyNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentRemoved: childFrame=");
nsFrame::ListTag(stdout, childFrame);
printf("\n");
if (parentFrame) {
nsIFrameDebug* fdbg = nsnull;
CallQueryInterface(parentFrame, &fdbg);
if (fdbg)
fdbg->List(aPresContext, stdout, 0);
}
else
printf(" ==> no parent frame\n");
}
#endif
// Walk the frame subtree deleting any out-of-flow frames, and
// remove the mapping from content objects to frames
DeletingFrameSubtree(aPresContext, shell, frameManager, childFrame);
// See if the child frame is a floating frame
// (positioned frames are handled below in the "else" clause)
const nsStyleDisplay* display = childFrame->GetStyleDisplay();
nsPlaceholderFrame* placeholderFrame = nsnull;
if (display->mDisplay == NS_STYLE_DISPLAY_POPUP)
// Get the placeholder frame
frameManager->GetPlaceholderFrameFor(childFrame,
(nsIFrame**)&placeholderFrame);
if (placeholderFrame) {
// Remove the mapping from the frame to its placeholder
frameManager->UnregisterPlaceholderFrame(placeholderFrame);
// Locate the root popup set and remove ourselves from the popup set's list
// of popup frames.
nsIFrame* rootFrame;
frameManager->GetRootFrame(&rootFrame);
if (rootFrame)
rootFrame->FirstChild(aPresContext, nsnull, &rootFrame);
#ifdef MOZ_XUL
nsCOMPtr<nsIRootBox> rootBox(do_QueryInterface(rootFrame));
if (rootBox) {
nsIFrame* popupSetFrame;
rootBox->GetPopupSetFrame(&popupSetFrame);
if (popupSetFrame) {
nsCOMPtr<nsIPopupSetFrame> popupSet(do_QueryInterface(popupSetFrame));
if (popupSet)
popupSet->RemovePopupFrame(childFrame);
}
}
#endif
// Remove the placeholder frame first (XXX second for now) (so
// that it doesn't retain a dangling pointer to memory)
if (placeholderFrame) {
parentFrame = placeholderFrame->GetParent();
DeletingFrameSubtree(aPresContext, shell, frameManager, placeholderFrame);
frameManager->RemoveFrame(parentFrame, nsnull, placeholderFrame);
return NS_OK;
}
}
else if (display->IsFloating()) {
#ifdef NOISY_FIRST_LETTER
printf(" ==> child display is still floating!\n");
#endif
// Get the placeholder frame
nsPlaceholderFrame* placeholderFrame;
frameManager->GetPlaceholderFrameFor(childFrame,
(nsIFrame**)&placeholderFrame);
// Remove the mapping from the frame to its placeholder
if (placeholderFrame)
frameManager->UnregisterPlaceholderFrame(placeholderFrame);
// Now we remove the floating frame
// XXX has to be done first for now: the blocks line list
// contains an array of pointers to the placeholder - we have to
// remove the float first (which gets rid of the lines
// reference to the placeholder and float) and then remove the
// placeholder
rv = frameManager->RemoveFrame(parentFrame,
nsLayoutAtoms::floatList, childFrame);
// Remove the placeholder frame first (XXX second for now) (so
// that it doesn't retain a dangling pointer to memory)
if (placeholderFrame) {
parentFrame = placeholderFrame->GetParent();
DeletingFrameSubtree(aPresContext, shell, frameManager, placeholderFrame);
rv = frameManager->RemoveFrame(parentFrame,
nsnull, placeholderFrame);
}
}
// See if it's absolutely or fixed positioned
else if (display->IsAbsolutelyPositioned()) {
// Get the placeholder frame
nsPlaceholderFrame* placeholderFrame;
frameManager->GetPlaceholderFrameFor(childFrame,
(nsIFrame**)&placeholderFrame);
// Remove the mapping from the frame to its placeholder
if (placeholderFrame)
frameManager->UnregisterPlaceholderFrame(placeholderFrame);
// Generate two notifications. First for the absolutely positioned
// frame
rv = frameManager->RemoveFrame(parentFrame,
(NS_STYLE_POSITION_FIXED == display->mPosition) ?
nsLayoutAtoms::fixedList : nsLayoutAtoms::absoluteList, childFrame);
// Now the placeholder frame
if (placeholderFrame) {
parentFrame = placeholderFrame->GetParent();
rv = frameManager->RemoveFrame(parentFrame, nsnull, placeholderFrame);
}
} else {
// Notify the parent frame that it should delete the frame
// check for a table caption which goes on an additional child list with a different parent
nsIFrame* outerTableFrame;
if (GetCaptionAdjustedParent(parentFrame, childFrame, &outerTableFrame)) {
rv = frameManager->RemoveFrame(outerTableFrame,
nsLayoutAtoms::captionList, childFrame);
}
else {
rv = frameManager->RemoveFrame(insertionPoint, nsnull, childFrame);
}
}
if (mInitialContainingBlock == childFrame) {
mInitialContainingBlock = nsnull;
}
if (haveFLS && mInitialContainingBlock) {
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext,
parentFrame),
GetFloatContainingBlock(aPresContext,
parentFrame));
RecoverLetterFrames(shell, aPresContext, state, containingBlock);
}
#ifdef DEBUG
if (gReallyNoisyContentUpdates && parentFrame) {
nsIFrameDebug* fdbg = nsnull;
CallQueryInterface(parentFrame, &fdbg);
if (fdbg) {
printf("nsCSSFrameConstructor::ContentRemoved: resulting frame model:\n");
fdbg->List(aPresContext, stdout, 0);
}
}
#endif
}
return rv;
}
#ifdef DEBUG
// To ensure that the functions below are only called within
// |ApplyRenderingChangeToTree|.
static PRBool gInApplyRenderingChangeToTree = PR_FALSE;
#endif
static void
DoApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIViewManager* aViewManager,
nsIFrameManager* aFrameManager,
nsChangeHint aChange);
static void
UpdateViewsForTree(nsIPresContext* aPresContext, nsIFrame* aFrame,
nsIViewManager* aViewManager, nsIFrameManager* aFrameManager,
nsRect& aBoundsRect, nsChangeHint aChange)
{
NS_PRECONDITION(gInApplyRenderingChangeToTree,
"should only be called within ApplyRenderingChangeToTree");
nsIView* view = aFrame->GetView();
if (view) {
if (aChange & nsChangeHint_RepaintFrame) {
aViewManager->UpdateView(view, NS_VMREFRESH_NO_SYNC);
}
if (aChange & nsChangeHint_SyncFrameView) {
nsContainerFrame::SyncFrameViewProperties(aPresContext, aFrame, nsnull, view);
}
}
nsRect bounds = aFrame->GetRect();
nsPoint parentOffset(bounds.x, bounds.y);
bounds.x = 0;
bounds.y = 0;
// now do children of frame
PRInt32 listIndex = 0;
nsIAtom* childList = nsnull;
nsIAtom* frameType = nsnull;
do {
nsIFrame* child = nsnull;
aFrame->FirstChild(aPresContext, childList, &child);
while (child) {
if (!(child->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) {
// only do frames that are in flow
child->GetFrameType(&frameType);
if (nsLayoutAtoms::placeholderFrame == frameType) { // placeholder
// get out of flow frame and start over there
nsIFrame* outOfFlowFrame = ((nsPlaceholderFrame*)child)->GetOutOfFlowFrame();
NS_ASSERTION(outOfFlowFrame, "no out-of-flow frame");
DoApplyRenderingChangeToTree(aPresContext, outOfFlowFrame,
aViewManager, aFrameManager, aChange);
}
else { // regular frame
nsRect childBounds;
UpdateViewsForTree(aPresContext, child, aViewManager, aFrameManager, childBounds, aChange);
bounds.UnionRect(bounds, childBounds);
}
NS_IF_RELEASE(frameType);
}
child = child->GetNextSibling();
}
NS_IF_RELEASE(childList);
aFrame->GetAdditionalChildListName(listIndex++, &childList);
} while (childList);
NS_IF_RELEASE(childList);
aBoundsRect = bounds;
aBoundsRect += parentOffset;
}
static void
DoApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIViewManager* aViewManager,
nsIFrameManager* aFrameManager,
nsChangeHint aChange)
{
NS_PRECONDITION(gInApplyRenderingChangeToTree,
"should only be called within ApplyRenderingChangeToTree");
for ( ; aFrame; aFrame = GetNifOrSpecialSibling(aFrameManager, aFrame)) {
// Get the frame's bounding rect
nsRect invalidRect;
nsPoint viewOffset;
// Get view if this frame has one and trigger an update. If the
// frame doesn't have a view, find the nearest containing view
// (adjusting r's coordinate system to reflect the nesting) and
// update there.
nsIView* view = aFrame->GetView();
nsIView* parentView;
if (! view) { // XXX can view have children outside it?
aFrame->GetOffsetFromView(aPresContext, viewOffset, &parentView);
NS_ASSERTION(nsnull != parentView, "no view");
}
UpdateViewsForTree(aPresContext, aFrame, aViewManager, aFrameManager,
invalidRect, aChange);
if (! view && (aChange & nsChangeHint_RepaintFrame)) { // if frame has view, will already be invalidated
// XXX Instead of calling this we should really be calling
// Invalidate on on the nsFrame (which does this)
// XXX This rect inflation should be done when the rects are
// being accumulated in UpdateViewsForTree, not in
// DoApplyRenderingChangeToTree
const nsStyleOutline* outline = aFrame->GetStyleOutline();
nscoord width;
outline->GetOutlineWidth(width);
if (width > 0) {
invalidRect.Inflate(width, width);
}
invalidRect -= aFrame->GetPosition();
invalidRect += viewOffset;
aViewManager->UpdateView(parentView, invalidRect, NS_VMREFRESH_NO_SYNC);
}
}
}
static void
ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIViewManager* aViewManager,
nsChangeHint aChange)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
PRBool isPaintingSuppressed = PR_FALSE;
shell->IsPaintingSuppressed(&isPaintingSuppressed);
if (isPaintingSuppressed) {
// Don't allow synchronous rendering changes when painting is turned off.
aChange = NS_SubtractHint(aChange, nsChangeHint_RepaintFrame);
if (!aChange) {
return;
}
}
// If the frame's background is propagated to an ancestor, walk up to
// that ancestor.
const nsStyleBackground *bg;
PRBool isCanvas;
while (!nsCSSRendering::FindBackground(aPresContext, aFrame,
&bg, &isCanvas)) {
aFrame = aFrame->GetParent();
NS_ASSERTION(aFrame, "root frame must paint");
}
nsIViewManager* viewManager = aViewManager;
if (!viewManager) {
viewManager = aPresContext->GetViewManager();
}
// Trigger rendering updates by damaging this frame and any
// continuations of this frame.
// XXX this needs to detect the need for a view due to an opacity change and deal with it...
viewManager->BeginUpdateViewBatch();
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
#ifdef DEBUG
gInApplyRenderingChangeToTree = PR_TRUE;
#endif
DoApplyRenderingChangeToTree(aPresContext, aFrame, viewManager,
frameManager, aChange);
#ifdef DEBUG
gInApplyRenderingChangeToTree = PR_FALSE;
#endif
viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
}
nsresult
nsCSSFrameConstructor::StyleChangeReflow(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIAtom* aAttribute)
{
// If the frame hasn't even received an initial reflow, then don't
// send it a style-change reflow!
if (aFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW)
return NS_OK;
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::StyleChangeReflow: aFrame=");
nsFrame::ListTag(stdout, aFrame);
printf("\n");
}
#endif
// Is it a box? If so we can coelesce.
nsresult rv;
nsIBox *box;
rv = CallQueryInterface(aFrame, &box);
if (NS_SUCCEEDED(rv) && box) {
nsBoxLayoutState state(aPresContext);
box->MarkStyleChange(state);
}
else {
// If the frame is part of a split block-in-inline hierarchy, then
// target the style-change reflow at the first ``normal'' ancestor
// so we're sure that the style change will propagate to any
// anonymously created siblings.
if (IsFrameSpecial(aFrame))
aFrame = GetIBContainingBlockFor(aFrame);
// Target a style-change reflow at the frame.
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsHTMLReflowCommand *reflowCmd;
rv = NS_NewHTMLReflowCommand(&reflowCmd, aFrame,
eReflowType_StyleChanged,
nsnull,
aAttribute);
if (NS_SUCCEEDED(rv))
shell->AppendReflowCommand(reflowCmd);
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
nsISupports* aSubContent)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
// Find the child frame
nsIFrame* frame;
shell->GetPrimaryFrameFor(aContent, &frame);
// Notify the first frame that maps the content. It will generate a reflow
// command
// It's possible the frame whose content changed isn't inserted into the
// frame hierarchy yet, or that there is no frame that maps the content
if (nsnull != frame) {
#if 0
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
("nsHTMLStyleSheet::ContentChanged: content=%p[%s] subcontent=%p frame=%p",
aContent, ContentTag(aContent, 0),
aSubContent, frame));
#endif
// Special check for text content that is a child of a letter
// frame. There are two interesting cases that we have to handle
// carefully: text content that is going empty (which means we
// should select a new text node as the first-letter text) or text
// content that empty but is no longer empty (it might be the
// first-letter text but isn't currently).
//
// To deal with both of these we make a simple change: map a
// ContentChanged into a ContentReplaced when we are changing text
// that is part of a first-letter situation.
PRBool doContentChanged = PR_TRUE;
nsCOMPtr<nsITextContent> textContent(do_QueryInterface(aContent));
if (textContent) {
// Ok, it's text content. Now do some real work...
nsIFrame* block = GetFloatContainingBlock(aPresContext, frame);
if (block) {
// See if the block has first-letter style applied to it.
nsIContent* blockContent = block->GetContent();
nsStyleContext* blockSC = block->GetStyleContext();
PRBool haveFirstLetterStyle =
HaveFirstLetterStyle(aPresContext, blockContent, blockSC);
if (haveFirstLetterStyle) {
// The block has first-letter style. Use content-replaced to
// repair the blocks frame structure properly.
nsCOMPtr<nsIContent> container = aContent->GetParent();
if (container) {
PRInt32 ix = container->IndexOf(aContent);
doContentChanged = PR_FALSE;
rv = ContentReplaced(aPresContext, container,
aContent, aContent, ix);
}
}
}
}
if (doContentChanged) {
frame->ContentChanged(aPresContext, aContent, aSubContent);
}
}
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ProcessRestyledFrames(nsStyleChangeList& aChangeList,
nsIPresContext* aPresContext)
{
PRInt32 count = aChangeList.Count();
if (!count)
return NS_OK;
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
nsCOMPtr<nsIFrameManager> frameManager;
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Mark frames so that we skip frames that die along the way, bug 123049.
// A frame can be in the list multiple times with different hints. Further
// optmization is possible if nsStyleChangeList::AppendChange could coalesce
PRInt32 index = count;
while (0 <= --index) {
const nsStyleChangeData* changeData;
aChangeList.ChangeAt(index, &changeData);
if (changeData->mFrame) {
frameManager->SetFrameProperty(changeData->mFrame,
nsLayoutAtoms::changeListProperty, nsnull, nsnull);
}
}
index = count;
while (0 <= --index) {
nsIFrame* frame;
nsIContent* content;
nsChangeHint hint;
aChangeList.ChangeAt(index, frame, content, hint);
// skip any frame that has been destroyed due to a ripple effect
if (frame) {
void* dummy;
nsresult res = frameManager->GetFrameProperty(frame,
nsLayoutAtoms::changeListProperty, 0, &dummy);
if (NS_IFRAME_MGR_PROP_NOT_THERE == res)
continue;
}
if (hint & nsChangeHint_ReconstructDoc) {
NS_ERROR("This shouldn't happen");
}
if (hint & nsChangeHint_ReconstructFrame) {
RecreateFramesForContent(aPresContext, content);
} else {
NS_ASSERTION(frame, "This shouldn't happen");
if (hint & nsChangeHint_ReflowFrame) {
StyleChangeReflow(aPresContext, frame, nsnull);
}
if (hint & (nsChangeHint_RepaintFrame | nsChangeHint_SyncFrameView)) {
ApplyRenderingChangeToTree(aPresContext, frame, nsnull, hint);
}
}
#ifdef DEBUG
// reget from content since it may have been regenerated...
if (content) {
nsIFrame* frame;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
shell->GetPrimaryFrameFor(content, &frame);
if (frame) {
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
frameManager->DebugVerifyStyleTree(frame);
}
} else {
NS_WARNING("Unable to test style tree integrity -- no content node");
}
#endif
}
// cleanup references
index = count;
while (0 <= --index) {
const nsStyleChangeData* changeData;
aChangeList.ChangeAt(index, &changeData);
if (changeData->mFrame) {
frameManager->RemoveFrameProperty(changeData->mFrame,
nsLayoutAtoms::changeListProperty);
}
}
aChangeList.Clear();
return NS_OK;
}
static PRBool
IsAncestorOf(nsIContent *aAncestor, nsIContent *aDescendant)
{
for (nsIContent* n = aDescendant; n; n = n->GetParent())
if (n == aAncestor)
return PR_TRUE;
return PR_FALSE;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentStatesChanged(nsIPresContext* aPresContext,
nsIContent* aContent1,
nsIContent* aContent2,
PRInt32 aStateMask)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
NS_ASSERTION(shell, "couldn't get pres shell");
if (shell) {
nsCOMPtr<nsIStyleSet> styleSet;
shell->GetStyleSet(getter_AddRefs(styleSet));
NS_ASSERTION(styleSet, "couldn't get style set");
if (styleSet) { // test if any style rules exist which are dependent on content state
// Detect if one is the ancestor of the other, and skip if so.
if (aContent1 && aContent2) {
if (aContent1 == aContent2)
aContent2 = nsnull;
else if (IsAncestorOf(aContent1, aContent2))
aContent2 = nsnull;
else if (IsAncestorOf(aContent2, aContent1)) {
aContent1 = nsnull;
}
}
nsIFrame* primaryFrame1 = nsnull;
nsIFrame* primaryFrame2 = nsnull;
PRUint8 app1 = 0;
PRUint8 app2 = 0;
if (aContent1) {
shell->GetPrimaryFrameFor(aContent1, &primaryFrame1);
if (primaryFrame1) {
app1 = primaryFrame1->GetStyleDisplay()->mAppearance;
}
// XXXldb Why check app1 here when you could just do the code
// below |if (app1)| above and avoid the extra style reresolution?
if (!app1) {
PRBool depends = PR_FALSE;
styleSet->HasStateDependentStyle(aPresContext, aContent1,
aStateMask, &depends);
if (!depends) {
primaryFrame1 = nsnull;
aContent1 = nsnull;
}
}
}
if (aContent2) {
shell->GetPrimaryFrameFor(aContent2, &primaryFrame2);
if (primaryFrame2) {
app2 = primaryFrame2->GetStyleDisplay()->mAppearance;
}
// XXXldb Why check app2 here when you could just do the code
// below |if (app2)| above and avoid the extra style reresolution?
if (!app2) {
PRBool depends = PR_FALSE;
styleSet->HasStateDependentStyle(aPresContext, aContent2,
aStateMask, &depends);
if (!depends) {
primaryFrame2 = nsnull;
aContent2 = nsnull;
}
}
}
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
if (primaryFrame1) {
nsStyleChangeList changeList;
nsChangeHint frameChange = NS_STYLE_HINT_NONE;
frameManager->ComputeStyleChangeFor(primaryFrame1,
kNameSpaceID_Unknown, nsnull,
changeList, NS_STYLE_HINT_NONE,
frameChange);
if (app1) {
nsCOMPtr<nsITheme> theme;
aPresContext->GetTheme(getter_AddRefs(theme));
PRBool repaint = PR_FALSE;
if (theme && theme->ThemeSupportsWidget(aPresContext, primaryFrame1, app1))
theme->WidgetStateChanged(primaryFrame1, app1, nsnull, &repaint);
if (repaint)
ApplyRenderingChangeToTree(aPresContext, primaryFrame1, nsnull, nsChangeHint_RepaintFrame);
}
if (frameChange & nsChangeHint_ReconstructDoc) {
return ReconstructDocElementHierarchy(aPresContext);
// No need to worry about anything else.
}
else if (frameChange & nsChangeHint_ReconstructFrame) {
result = RecreateFramesForContent(aPresContext, aContent1);
changeList.Clear();
} else {
ProcessRestyledFrames(changeList, aPresContext);
}
}
if (primaryFrame2) {
nsStyleChangeList changeList;
nsChangeHint frameChange = NS_STYLE_HINT_NONE;
frameManager->ComputeStyleChangeFor(primaryFrame2,
kNameSpaceID_Unknown, nsnull,
changeList, NS_STYLE_HINT_NONE, frameChange);
if (app2) {
nsCOMPtr<nsITheme> theme;
aPresContext->GetTheme(getter_AddRefs(theme));
PRBool repaint = PR_FALSE;
if (theme && theme->ThemeSupportsWidget(aPresContext, primaryFrame2, app2))
theme->WidgetStateChanged(primaryFrame2, app2, nsnull, &repaint);
if (repaint)
ApplyRenderingChangeToTree(aPresContext, primaryFrame2, nsnull, nsChangeHint_RepaintFrame);
}
// max change needed for top level frames
if (frameChange & nsChangeHint_ReconstructDoc) {
result = ReconstructDocElementHierarchy(aPresContext);
changeList.Clear();
} else if (frameChange & nsChangeHint_ReconstructFrame) {
result = RecreateFramesForContent(aPresContext, aContent2);
changeList.Clear();
} else {
// process any children that need it
ProcessRestyledFrames(changeList, aPresContext);
}
}
// no frames, reconstruct for content
if (!primaryFrame1 && aContent1) {
result = MaybeRecreateFramesForContent(aPresContext, aContent1);
}
if (!primaryFrame2 && aContent2) {
result = MaybeRecreateFramesForContent(aPresContext, aContent2);
}
}
}
return result;
}
NS_IMETHODIMP
nsCSSFrameConstructor::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
nsresult result = NS_OK;
nsCOMPtr<nsIStyleFrameConstruction> kungFuDeathGrip(this);
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
// Get the frame associated with the content which is the highest in the frame tree
nsIFrame* primaryFrame;
shell->GetPrimaryFrameFor(aContent, &primaryFrame);
#if 0
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
("HTMLStyleSheet::AttributeChanged: content=%p[%s] frame=%p",
aContent, ContentTag(aContent, 0), frame));
#endif
// the style tag has its own interpretation based on aHint
nsChangeHint hint = NS_STYLE_HINT_NONE;
nsCOMPtr<nsIStyledContent> styledContent = do_QueryInterface(aContent);
if (styledContent) {
// Get style hint from HTML content object.
styledContent->GetAttributeChangeHint(aAttribute, aModType, hint);
}
PRBool reconstruct = (hint & nsChangeHint_ReconstructDoc) != 0;
PRBool reframe = (hint & (nsChangeHint_ReconstructDoc | nsChangeHint_ReconstructFrame)) != 0;
#ifdef MOZ_XUL
// The following listbox widget trap prevents offscreen listbox widget
// content from being removed and re-inserted (which is what would
// happen otherwise).
if (!primaryFrame && !reframe) {
PRInt32 namespaceID;
nsCOMPtr<nsIAtom> tag;
mDocument->GetBindingManager()->ResolveTag(aContent, &namespaceID,
getter_AddRefs(tag));
if (tag && (tag.get() == nsXULAtoms::listitem || tag.get() == nsXULAtoms::listcell))
return NS_OK;
}
if (aAttribute == nsXULAtoms::tooltiptext ||
aAttribute == nsXULAtoms::tooltip)
{
nsIFrame* rootFrame = nsnull;
shell->GetRootFrame(&rootFrame);
if (rootFrame)
rootFrame->FirstChild(aPresContext, nsnull, &rootFrame);
nsCOMPtr<nsIRootBox> rootBox(do_QueryInterface(rootFrame));
if (rootBox) {
if (aModType == nsIDOMMutationEvent::REMOVAL)
rootBox->RemoveTooltipSupport(aContent);
if (aModType == nsIDOMMutationEvent::ADDITION)
rootBox->AddTooltipSupport(aContent);
}
}
#endif // MOZ_XUL
// See if we have appearance information for a theme.
if (primaryFrame) {
const nsStyleDisplay* disp = primaryFrame->GetStyleDisplay();
if (disp->mAppearance) {
nsCOMPtr<nsITheme> theme;
aPresContext->GetTheme(getter_AddRefs(theme));
if (theme && theme->ThemeSupportsWidget(aPresContext, primaryFrame, disp->mAppearance)) {
PRBool repaint = PR_FALSE;
theme->WidgetStateChanged(primaryFrame, disp->mAppearance, aAttribute, &repaint);
if (repaint)
ApplyRenderingChangeToTree(aPresContext, primaryFrame, nsnull, nsChangeHint_RepaintFrame);
}
}
}
// apply changes
if (reconstruct) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else if (reframe) {
result = RecreateFramesForContent(aPresContext, aContent);
}
else {
if (primaryFrame) {
nsStyleChangeList changeList;
// put primary frame on list to deal with, re-resolve may update or add next in flows
changeList.AppendChange(primaryFrame, aContent, hint);
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
PRBool affects;
frameManager->HasAttributeDependentStyle(aContent,
aAttribute, aModType, &affects);
if (affects) {
// there is an effect, so compute it
frameManager->ComputeStyleChangeFor(primaryFrame,
aNameSpaceID, aAttribute,
changeList, hint, hint);
}
// hint is for primary only
if (hint & nsChangeHint_ReconstructDoc) {
result = ReconstructDocElementHierarchy(aPresContext);
changeList.Clear();
} else if (hint & nsChangeHint_ReconstructFrame) {
result = RecreateFramesForContent(aPresContext, aContent);
changeList.Clear();
} else {
// let the frame deal with it, since we don't know how to
result = primaryFrame->AttributeChanged(aPresContext, aContent,
aNameSpaceID, aAttribute,
aModType);
// XXXwaterson should probably check for special IB siblings
// here, and propagate the AttributeChanged notification to
// them, as well. Currently, inline frames don't do anything on
// this notification, so it's not that big a deal.
// handle any children (primary may be on list too)
ProcessRestyledFrames(changeList, aPresContext);
}
}
else {
result = MaybeRecreateFramesForContent(aPresContext, aContent);
}
}
return result;
}
//STATIC
void nsCSSFrameConstructor::GetAlternateTextFor(nsIContent* aContent,
nsIAtom* aTag, // content object's tag
nsString& aAltText)
{
nsresult rv;
// The "alt" attribute specifies alternate text that is rendered
// when the image can not be displayed
rv = aContent->GetAttr(kNameSpaceID_None, nsHTMLAtoms::alt, aAltText);
// If there's no "alt" attribute, and aContent is an input
// element, then use the value of the "value" attribute
if ((NS_CONTENT_ATTR_NOT_THERE == rv) && (nsHTMLAtoms::input == aTag)) {
rv = aContent->GetAttr(kNameSpaceID_None, nsHTMLAtoms::value,
aAltText);
// If there's no "value" attribute either, then use the localized string
// for "Submit" as the alternate text.
if (NS_CONTENT_ATTR_NOT_THERE == rv) {
nsFormControlHelper::GetLocalizedString(nsFormControlHelper::GetHTMLPropertiesFileName(),
NS_LITERAL_STRING("Submit").get(), aAltText);
}
}
}
// Construct an alternate frame to use when the image can't be rendered
nsresult
nsCSSFrameConstructor::ConstructAlternateFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aContent,
nsStyleContext* aStyleContext,
nsIFrame* aGeometricParent,
nsIFrame* aContentParent,
nsIFrame*& aFrame)
{
nsresult rv;
nsAutoString altText;
// Initialize OUT parameter
aFrame = nsnull;
// Get the alternate text to use
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
GetAlternateTextFor(aContent, tag, altText);
// Create a text content element for the alternate text
nsCOMPtr<nsIContent> altTextContent(do_CreateInstance(kTextNodeCID,&rv));
if (NS_FAILED(rv))
return rv;
// Set the content's text
nsCOMPtr<nsIDOMCharacterData> domData = do_QueryInterface(altTextContent);
if (domData)
domData->SetData(altText);
// Set aContent as the parent content and set the document object
altTextContent->SetParent(aContent);
altTextContent->SetDocument(mDocument, PR_TRUE, PR_TRUE);
// Create either an inline frame, block frame, or area frame
nsIFrame* containerFrame;
PRBool isOutOfFlow = PR_FALSE;
const nsStyleDisplay* display = aStyleContext->GetStyleDisplay();
if (display->IsAbsolutelyPositioned()) {
NS_NewAbsoluteItemWrapperFrame(aPresShell, &containerFrame);
isOutOfFlow = PR_TRUE;
} else if (display->IsFloating()) {
NS_NewFloatingItemWrapperFrame(aPresShell, &containerFrame);
isOutOfFlow = PR_TRUE;
} else if (NS_STYLE_DISPLAY_BLOCK == display->mDisplay) {
NS_NewBlockFrame(aPresShell, &containerFrame);
} else {
NS_NewInlineFrame(aPresShell, &containerFrame);
}
containerFrame->Init(aPresContext, aContent, aGeometricParent, aStyleContext, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(containerFrame, aContentParent,
PR_FALSE);
// If the frame is out-of-flow, then mark it as such
if (isOutOfFlow) {
containerFrame->AddStateBits(NS_FRAME_OUT_OF_FLOW);
}
// Create a text frame to display the alt-text. It gets a pseudo-element
// style context
nsIFrame* textFrame;
NS_NewTextFrame(aPresShell, &textFrame);
nsRefPtr<nsStyleContext> textStyleContext;
textStyleContext = aPresContext->ResolveStyleContextForNonElement(aStyleContext);
textFrame->Init(aPresContext, altTextContent, containerFrame,
textStyleContext, nsnull);
containerFrame->SetInitialChildList(aPresContext, nsnull, textFrame);
// Return the container frame
aFrame = containerFrame;
return NS_OK;
}
#ifdef NS_DEBUG
static PRBool
IsPlaceholderFrame(nsIFrame* aFrame)
{
nsIAtom* frameType;
PRBool result;
aFrame->GetFrameType(&frameType);
result = frameType == nsLayoutAtoms::placeholderFrame;
NS_IF_RELEASE(frameType);
return result;
}
#endif
static PRBool
HasDisplayableChildren(nsIPresContext* aPresContext, nsIFrame* aContainerFrame)
{
// Returns 'true' if there are frames within aContainerFrame that
// could be displayed in the frame list.
NS_PRECONDITION(aContainerFrame != nsnull, "null ptr");
if (! aContainerFrame)
return PR_FALSE;
nsIFrame* frame;
aContainerFrame->FirstChild(aPresContext, nsnull, &frame);
while (frame) {
// If it's not a text frame, then assume that it's displayable.
nsCOMPtr<nsIAtom> frameType;
frame->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() != nsLayoutAtoms::textFrame)
return PR_TRUE;
nsCOMPtr<nsITextContent> text = do_QueryInterface(frame->GetContent());
NS_ASSERTION(text != nsnull, "oops, not an nsITextContent");
if (! text)
return PR_TRUE;
// Is it only whitespace?
PRBool onlyWhitespace;
text->IsOnlyWhitespace(&onlyWhitespace);
// If not, then we have displayable content here.
if (! onlyWhitespace)
return PR_TRUE;
// Otherwise, on to the next frame...
frame = frame->GetNextSibling();
}
// If we get here, then we've iterated through all the child frames,
// and every one is a text frame containing whitespace. (Or, there
// weren't any frames at all!) There is nothing to diplay.
return PR_FALSE;
}
NS_IMETHODIMP
nsCSSFrameConstructor::CantRenderReplacedElement(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
nsresult rv = NS_OK;
// Get parent frame and style context
nsIFrame* parentFrame = aFrame->GetParent();
nsStyleContext* styleContext = aFrame->GetStyleContext();
// Get aFrame's content object and the tag name
PRInt32 nameSpaceID;
nsCOMPtr<nsIAtom> tag;
nsIContent* content = aFrame->GetContent();
NS_ASSERTION(content, "null content object");
content->GetNameSpaceID(&nameSpaceID);
content->GetTag(getter_AddRefs(tag));
// Get the child list name that the frame is contained in
nsCOMPtr<nsIAtom> listName;
GetChildListNameFor(aPresContext, parentFrame, aFrame, getter_AddRefs(listName));
// If the frame is out of the flow, then it has a placeholder frame.
nsPlaceholderFrame* placeholderFrame = nsnull;
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
if (listName) {
presShell->GetPlaceholderFrameFor(aFrame, (nsIFrame**)&placeholderFrame);
}
// Get the previous sibling frame
nsIFrame* firstChild;
parentFrame->FirstChild(aPresContext, listName, &firstChild);
nsFrameList frameList(firstChild);
// See whether it's an IMG or an INPUT element (for image buttons)
// or if it is an applet with no displayable children
// XXX need to check nameSpaceID in these spots
if (nsHTMLAtoms::img == tag.get() || nsHTMLAtoms::input == tag.get() ||
(nsHTMLAtoms::applet == tag.get() && !HasDisplayableChildren(aPresContext, aFrame))) {
// Try and construct an alternate frame to use when the
// image can't be rendered
nsIFrame* newFrame;
rv = ConstructAlternateFrame(aPresShell, aPresContext, content, styleContext,
parentFrame, nsnull, newFrame);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIFrameManager> frameManager;
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Replace the old frame with the new frame
DeletingFrameSubtree(aPresContext, presShell, frameManager, aFrame);
// Reset the primary frame mapping
frameManager->SetPrimaryFrameFor(content, newFrame);
// Replace the old frame with the new frame
// XXXbz If this fails, we leak the content node newFrame points to!
frameManager->ReplaceFrame(parentFrame, listName, aFrame, newFrame);
// Now that we've replaced the primary frame, if there's a placeholder
// frame then complete the transition from image frame to new frame
if (placeholderFrame) {
// Remove the association between the old frame and its placeholder
frameManager->UnregisterPlaceholderFrame(placeholderFrame);
// Placeholder frames have a pointer back to the out-of-flow frame.
// Make sure that's correct, too.
placeholderFrame->SetOutOfFlowFrame(newFrame);
// Reuse the existing placeholder frame, and add an association to the
// new frame
frameManager->RegisterPlaceholderFrame(placeholderFrame);
// XXX Work around a bug in the block code where the float won't get
// reflowed unless the line containing the placeholder frame is reflowed...
placeholderFrame->GetParent()->
ReflowDirtyChild(aPresShell, placeholderFrame);
}
}
} else if ((nsHTMLAtoms::object == tag.get()) ||
(nsHTMLAtoms::embed == tag.get()) ||
(nsHTMLAtoms::applet == tag.get())) {
// It's an OBJECT, EMBED, or APPLET, so we should display the contents
// instead
nsIFrame* absoluteContainingBlock;
nsIFrame* floatContainingBlock;
nsIFrame* inFlowParent = parentFrame;
// If the OBJECT frame is out-of-flow, then get the placeholder frame's
// parent and use that when determining the absolute containing block and
// float containing block
if (placeholderFrame) {
inFlowParent = placeholderFrame->GetParent();
}
absoluteContainingBlock = GetAbsoluteContainingBlock(aPresContext, inFlowParent);
floatContainingBlock = GetFloatContainingBlock(aPresContext, inFlowParent);
#ifdef NS_DEBUG
// Verify that we calculated the same containing block
if (listName.get() == nsLayoutAtoms::absoluteList) {
NS_ASSERTION(absoluteContainingBlock == parentFrame,
"wrong absolute containing block");
} else if (listName.get() == nsLayoutAtoms::floatList) {
NS_ASSERTION(floatContainingBlock == parentFrame,
"wrong float containing block");
}
#endif
// Now initialize the frame construction state
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
absoluteContainingBlock,
floatContainingBlock);
nsFrameItems frameItems;
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
// Create a new frame based on the display type.
// Note: if the old frame was out-of-flow, then so will the new frame
// and we'll get a new placeholder frame
rv = ConstructFrameByDisplayType(aPresShell, aPresContext, state, display,
content, nameSpaceID, tag,
inFlowParent, styleContext, frameItems);
if (NS_FAILED(rv)) return rv;
nsIFrame* newFrame = frameItems.childList;
if (NS_SUCCEEDED(rv)) {
if (placeholderFrame) {
// Remove the association between the old frame and its placeholder
// Note: ConstructFrameByDisplayType() will already have added an
// association for the new placeholder frame
state.mFrameManager->UnregisterPlaceholderFrame(placeholderFrame);
// Verify that the new frame is also a placeholder frame
NS_ASSERTION(IsPlaceholderFrame(newFrame), "unexpected frame type");
// Replace the old placeholder frame with the new placeholder frame
state.mFrameManager->ReplaceFrame(inFlowParent, nsnull,
placeholderFrame, newFrame);
}
// Replace the primary frame
if (listName == nsnull) {
if (IsInlineFrame(parentFrame) && !AreAllKidsInline(newFrame)) {
// We're in the uncomfortable position of being an inline
// that now contains a block. As in ConstructInline(), break
// the newly constructed frames into three lists: the inline
// frames before the first block frame (list1), the inline
// frames after the last block frame (list3), and all the
// frames between the first and last block frames (list2).
nsIFrame* list1 = newFrame;
nsIFrame* prevToFirstBlock;
nsIFrame* list2 = FindFirstBlock(aPresContext, list1, &prevToFirstBlock);
if (prevToFirstBlock)
prevToFirstBlock->SetNextSibling(nsnull);
else list1 = nsnull;
nsIFrame* afterFirstBlock = list2->GetNextSibling();
nsIFrame* lastBlock = FindLastBlock(aPresContext, afterFirstBlock);
if (! lastBlock)
lastBlock = list2;
nsIFrame* list3 = lastBlock->GetNextSibling();
lastBlock->SetNextSibling(nsnull);
// Create "special" inline-block linkage between the frames
// XXXldb Do we really need to do this? It doesn't seem
// consistent with the use in ConstructInline.
SetFrameIsSpecial(state.mFrameManager, list1, list2);
SetFrameIsSpecial(state.mFrameManager, list2, list3);
SetFrameIsSpecial(state.mFrameManager, list3, nsnull);
// Recursively split inlines back up to the first containing
// block frame.
SplitToContainingBlock(aPresContext, state, parentFrame, list1, list2, list3, PR_FALSE);
}
} else if (listName.get() == nsLayoutAtoms::absoluteList) {
newFrame = state.mAbsoluteItems.childList;
state.mAbsoluteItems.childList = nsnull;
} else if (listName.get() == nsLayoutAtoms::fixedList) {
newFrame = state.mFixedItems.childList;
state.mFixedItems.childList = nsnull;
} else if (listName.get() == nsLayoutAtoms::floatList) {
newFrame = state.mFloatedItems.childList;
state.mFloatedItems.childList = nsnull;
}
DeletingFrameSubtree(aPresContext, presShell,
state.mFrameManager, aFrame);
state.mFrameManager->ReplaceFrame(parentFrame, listName, aFrame,
newFrame);
// Reset the primary frame mapping. Don't assume that
// ConstructFrameByDisplayType() has done this
state.mFrameManager->SetPrimaryFrameFor(content, newFrame);
InsertOutOfFlowFrames(state, aPresContext);
}
} else if (nsHTMLAtoms::input == tag.get()) {
// XXX image INPUT elements are also image frames, but don't throw away the
// image frame, because the frame class has extra logic that is specific to
// INPUT elements
} else {
NS_ASSERTION(PR_FALSE, "unexpected tag");
}
return rv;
}
nsresult
nsCSSFrameConstructor::CreateContinuingOuterTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableOuterFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
// Create a continuing inner table frame, and if there's a caption then
// replicate the caption
nsIFrame* childFrame;
nsFrameItems newChildFrames;
aFrame->FirstChild(aPresContext, nsnull, &childFrame);
while (childFrame) {
nsIAtom* tableType;
// See if it's the inner table frame
childFrame->GetFrameType(&tableType);
if (nsLayoutAtoms::tableFrame == tableType) {
nsIFrame* continuingTableFrame;
// It's the inner table frame, so create a continuing frame
CreateContinuingFrame(aPresShell, aPresContext, childFrame, newFrame, &continuingTableFrame);
newChildFrames.AddChild(continuingTableFrame);
} else {
// XXX remove this code and the above checks. We don't want to replicate
// the caption (that is what the thead is for). This code is not executed
// anyway, because the caption was put in a different child list.
nsStyleContext* captionStyle = childFrame->GetStyleContext();
nsIContent* caption = childFrame->GetContent();
NS_ASSERTION(NS_STYLE_DISPLAY_TABLE_CAPTION ==
captionStyle->GetStyleDisplay()->mDisplay,
"expected caption");
// Replicate the caption frame
// XXX We have to do it this way instead of calling ConstructFrameByDisplayType(),
// because of a bug in the way ConstructTableFrame() handles the initial child
// list...
nsIFrame* captionFrame;
nsFrameItems childItems;
NS_NewTableCaptionFrame(aPresShell, &captionFrame);
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, newFrame),
captionFrame);
captionFrame->Init(aPresContext, caption, newFrame, captionStyle, nsnull);
ProcessChildren(aPresShell, aPresContext, state, caption, captionFrame,
PR_TRUE, childItems, PR_TRUE);
captionFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// XXX Deal with absolute and fixed frames...
if (state.mFloatedItems.childList) {
captionFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
state.mFloatedItems.childList);
}
newChildFrames.AddChild(captionFrame);
}
NS_IF_RELEASE(tableType);
childFrame = childFrame->GetNextSibling();
}
// Set the outer table's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, newChildFrames.childList);
}
*aContinuingFrame = newFrame;
return rv;
}
nsresult
nsCSSFrameConstructor::CreateContinuingTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
// Replicate any header/footer frames
nsIFrame* rowGroupFrame;
nsFrameItems childFrames;
aFrame->FirstChild(aPresContext, nsnull, &rowGroupFrame);
while (rowGroupFrame) {
// See if it's a header/footer
nsStyleContext* rowGroupStyle = rowGroupFrame->GetStyleContext();
const nsStyleDisplay* display = rowGroupStyle->GetStyleDisplay();
if ((NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == display->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == display->mDisplay)) {
// If the row group has was continued, then don't replicate it
nsIFrame* rgNextInFlow;
rowGroupFrame->GetNextInFlow(&rgNextInFlow);
if (rgNextInFlow) {
((nsTableRowGroupFrame*)rowGroupFrame)->SetRepeatable(PR_FALSE);
}
// Replicate the header/footer frame if it is not too tall
else if (((nsTableRowGroupFrame*)rowGroupFrame)->IsRepeatable()) {
nsIFrame* headerFooterFrame;
nsFrameItems childItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, newFrame),
nsnull);
NS_NewTableRowGroupFrame(aPresShell, &headerFooterFrame);
nsIContent* headerFooter = rowGroupFrame->GetContent();
headerFooterFrame->Init(aPresContext, headerFooter, newFrame,
rowGroupStyle, nsnull);
nsTableCreator tableCreator(aPresShell);
ProcessChildren(aPresShell, aPresContext, state, headerFooter, headerFooterFrame,
PR_FALSE, childItems, PR_FALSE, &tableCreator);
NS_ASSERTION(!state.mFloatedItems.childList, "unexpected floated element");
headerFooterFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
((nsTableRowGroupFrame*)headerFooterFrame)->SetRepeatable(PR_TRUE);
// Table specific initialization
((nsTableRowGroupFrame*)headerFooterFrame)->InitRepeatedFrame
(aPresContext, (nsTableRowGroupFrame*)rowGroupFrame);
// XXX Deal with absolute and fixed frames...
childFrames.AddChild(headerFooterFrame);
}
}
// Get the next row group frame
rowGroupFrame = rowGroupFrame->GetNextSibling();
}
// Set the table frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childFrames.childList);
}
*aContinuingFrame = newFrame;
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::CreateContinuingFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIFrame** aContinuingFrame)
{
nsCOMPtr<nsIAtom> frameType;
nsStyleContext* styleContext = aFrame->GetStyleContext();
nsIFrame* newFrame = nsnull;
nsresult rv = NS_OK;
// Use the frame type to determine what type of frame to create
aFrame->GetFrameType(getter_AddRefs(frameType));
nsIContent* content = aFrame->GetContent();
if (nsLayoutAtoms::textFrame == frameType) {
rv = NS_NewContinuingTextFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::inlineFrame == frameType) {
rv = NS_NewInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::blockFrame == frameType) {
rv = NS_NewBlockFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::areaFrame == frameType) {
rv = NS_NewAreaFrame(aPresShell, &newFrame, 0);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext,
aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::positionedInlineFrame == frameType) {
rv = NS_NewPositionedInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::pageFrame == frameType) {
nsIFrame* pageContentFrame;
rv = ConstructPageFrame(aPresShell, aPresContext, aParentFrame, aFrame,
newFrame, pageContentFrame);
} else if (nsLayoutAtoms::tableOuterFrame == frameType) {
rv = CreateContinuingOuterTableFrame(aPresShell, aPresContext, aFrame, aParentFrame,
content, styleContext, &newFrame);
} else if (nsLayoutAtoms::tableFrame == frameType) {
rv = CreateContinuingTableFrame(aPresShell, aPresContext, aFrame, aParentFrame,
content, styleContext, &newFrame);
} else if (nsLayoutAtoms::tableRowGroupFrame == frameType) {
rv = NS_NewTableRowGroupFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::tableRowFrame == frameType) {
rv = NS_NewTableRowFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
// Create a continuing frame for each table cell frame
nsIFrame* cellFrame;
nsFrameItems newChildList;
aFrame->FirstChild(aPresContext, nsnull, &cellFrame);
while (cellFrame) {
nsIAtom* tableType;
// See if it's a table cell frame
cellFrame->GetFrameType(&tableType);
if (IS_TABLE_CELL(tableType)) {
nsIFrame* continuingCellFrame;
CreateContinuingFrame(aPresShell, aPresContext, cellFrame, newFrame, &continuingCellFrame);
newChildList.AddChild(continuingCellFrame);
}
NS_IF_RELEASE(tableType);
cellFrame = cellFrame->GetNextSibling();
}
// Set the table cell's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, newChildList.childList);
}
} else if (IS_TABLE_CELL(frameType)) {
rv = NS_NewTableCellFrame(aPresShell, IsBorderCollapse(aParentFrame), &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
// Create a continuing area frame
nsIFrame* areaFrame;
nsIFrame* continuingAreaFrame;
aFrame->FirstChild(aPresContext, nsnull, &areaFrame);
CreateContinuingFrame(aPresShell, aPresContext, areaFrame, newFrame, &continuingAreaFrame);
// Set the table cell's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, continuingAreaFrame);
}
} else if (nsLayoutAtoms::lineFrame == frameType) {
rv = NS_NewFirstLineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::letterFrame == frameType) {
rv = NS_NewFirstLetterFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(newFrame, nsnull, PR_FALSE);
}
} else if (nsLayoutAtoms::imageFrame == frameType) {
rv = NS_NewImageFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
}
} else if (nsLayoutAtoms::placeholderFrame == frameType) {
// create a continuing out of flow frame
nsIFrame* oofFrame = ((nsPlaceholderFrame*)aFrame)->GetOutOfFlowFrame();
nsIFrame* oofContFrame;
CreateContinuingFrame(aPresShell, aPresContext, oofFrame, aParentFrame, &oofContFrame);
if (!oofContFrame)
return NS_ERROR_NULL_POINTER;
// create a continuing placeholder frame
nsCOMPtr<nsIFrameManager> frameManager;
aPresShell->GetFrameManager(getter_AddRefs(frameManager));
NS_ASSERTION(frameManager, "no frame manager");
CreatePlaceholderFrameFor(aPresShell, aPresContext, frameManager, content,
oofContFrame, styleContext, aParentFrame, &newFrame);
if (!newFrame)
return NS_ERROR_NULL_POINTER;
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
} else {
NS_ASSERTION(PR_FALSE, "unexpected frame type");
rv = NS_ERROR_UNEXPECTED;
}
*aContinuingFrame = newFrame;
if (NS_FAILED(rv)) {
return rv;
}
// Now deal with fixed-pos things.... They should appear on all pages, and
// the placeholders must be kids of a block, so we want to move over the
// placeholders when processing the child of the pageContentFrame.
if (!aParentFrame) {
return NS_OK;
}
nsCOMPtr<nsIAtom> parentType;
aParentFrame->GetFrameType(getter_AddRefs(parentType));
if (parentType != nsLayoutAtoms::pageContentFrame) {
return NS_OK;
}
// Our parent is a page content frame. Look up its page frame and
// see whether it has a prev-in-flow.
nsIFrame* pageFrame = aParentFrame->GetParent();
if (!pageFrame) {
NS_ERROR("pageContentFrame does not have parent!");
return NS_ERROR_UNEXPECTED;
}
nsIFrame* prevPage;
pageFrame->GetPrevInFlow(&prevPage);
if (!prevPage) {
return NS_OK;
}
// OK. now we need to do this fixed-pos game.
// Get prevPage's page content frame
nsIFrame* prevPageContentFrame;
prevPage->FirstChild(aPresContext, nsnull, &prevPageContentFrame);
if (!prevPageContentFrame) {
return NS_ERROR_UNEXPECTED;
}
nsFrameItems fixedPlaceholders;
nsIFrame* firstFixed;
prevPageContentFrame->FirstChild(aPresContext, nsLayoutAtoms::fixedList,
&firstFixed);
if (!firstFixed) {
return NS_OK;
}
nsFrameConstructorState state(aPresContext, aParentFrame,
mInitialContainingBlock,
mInitialContainingBlock);
// Iterate the fixed frames and replicate each
for (nsIFrame* fixed = firstFixed; fixed; fixed = fixed->GetNextSibling()) {
rv = ConstructFrame(aPresShell, aPresContext, state, fixed->GetContent(),
newFrame, fixedPlaceholders);
if (NS_FAILED(rv))
return rv;
}
// Add the placeholders to our primary child list.
// XXXbz this is a little screwed up, since the fixed frames will have the
// wrong parent block and hence auto-positioning will be broken. Oh, well.
newFrame->SetInitialChildList(aPresContext, nsnull, fixedPlaceholders.childList);
// Add the fixed frames to the fixed child list of the page content frame
aParentFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
return NS_OK;
}
// Helper function that searches the immediate child frames
// (and their children if the frames are "special")
// for a frame that maps the specified content object
nsIFrame*
nsCSSFrameConstructor::FindFrameWithContent(nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIFrame* aParentFrame,
nsIContent* aParentContent,
nsIContent* aContent,
nsFindFrameHint* aHint)
{
#ifdef NOISY_FINDFRAME
FFWC_totalCount++;
printf("looking for content=%p, given aParentFrame %p parentContent %p, hint is %s\n",
aContent, aParentFrame, aParentContent, aHint ? "set" : "NULL");
#endif
NS_ENSURE_TRUE(aParentFrame != nsnull, nsnull);
do {
// Search for the frame in each child list that aParentFrame supports
nsIAtom* listName = nsnull;
PRInt32 listIndex = 0;
do {
#ifdef NOISY_FINDFRAME
FFWC_doLoop++;
#endif
nsIFrame* kidFrame=nsnull;
// if we were given an hint, try to use it here to find a good
// previous frame to start our search (|kidFrame|).
if (aHint) {
#ifdef NOISY_FINDFRAME
printf(" hint frame is %p\n", aHint->mPrimaryFrameForPrevSibling);
#endif
// start with the primary frame for aContent's previous sibling
kidFrame = aHint->mPrimaryFrameForPrevSibling;
// But if it's out of flow, start from its placeholder.
if (kidFrame && (kidFrame->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) {
aFrameManager->GetPlaceholderFrameFor(kidFrame, &kidFrame);
}
if (kidFrame) {
// then use the next sibling frame as our starting point
kidFrame = kidFrame->GetNextSibling();
if (!kidFrame)
{ // the hint frame had no next frame. try the next-in-flow fo the parent of the hint frame
// if there is one
nsIFrame *parentFrame = aHint->mPrimaryFrameForPrevSibling->GetParent();
if (parentFrame) {
parentFrame = GetNifOrSpecialSibling(aFrameManager, parentFrame);
}
if (parentFrame)
{ // if we found the next-in-flow for the parent of the hint frame, start with it's first child
parentFrame->FirstChild(aPresContext, listName, &kidFrame);
// Leave |aParentFrame| as-is, since the only time we'll
// reuse it is if the hint fails.
NS_ASSERTION(!kidFrame || parentFrame->GetContent() == aParentContent,
"next-in-flow has different content");
}
}
#ifdef NOISY_FINDFRAME
printf(" hint gives us kidFrame=%p with parent frame %p content %p\n",
kidFrame, aParentFrame, aParentContent);
#endif
}
}
if (!kidFrame) { // we didn't have enough info to prune, start searching from the beginning
aParentFrame->FirstChild(aPresContext, listName, &kidFrame);
}
while (kidFrame) {
// See if the child frame points to the content object we're
// looking for
nsIContent* kidContent = kidFrame->GetContent();
if (kidContent == aContent) {
// We found a match. See if it's a placeholder frame
nsCOMPtr<nsIAtom> frameType;
kidFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::placeholderFrame == frameType.get()) {
// Ignore the placeholder and return the out-of-flow frame instead
return ((nsPlaceholderFrame*)kidFrame)->GetOutOfFlowFrame();
}
// Return the matching child frame
return kidFrame;
}
// only do this if there is content
if (kidContent) {
// We search the immediate children only, but if the child frame has
// the same content pointer as its parent then we need to search its
// child frames, too.
// We also need to search if the child content is anonymous and scoped
// to the parent content.
if (aParentContent == kidContent ||
(aParentContent && (aParentContent == kidContent->GetBindingParent())))
{
#ifdef NOISY_FINDFRAME
FFWC_recursions++;
printf(" recursing with new parent set to kidframe=%p, parentContent=%p\n",
kidFrame, aParentContent.get());
#endif
nsIFrame* matchingFrame =
FindFrameWithContent(aPresContext, aFrameManager, kidFrame,
aParentContent, aContent, nsnull);
if (matchingFrame) {
return matchingFrame;
}
}
}
// Get the next sibling frame
kidFrame = kidFrame->GetNextSibling();
#ifdef NOISY_FINDFRAME
FFWC_doSibling++;
if (kidFrame) {
printf(" searching sibling frame %p\n", kidFrame);
}
#endif
}
if (aHint) {
// If we get here, and we had a hint, then we didn't find a
// frame. The hint may have been a floated or absolutely
// positioned frame, in which case we'd be off in the weeds
// looking through something other than primary frame
// list. Reboot the search from scratch, without the hint, but
// using the null child list again.
aHint = nsnull;
} else {
NS_IF_RELEASE(listName);
aParentFrame->GetAdditionalChildListName(listIndex++, &listName);
}
} while(listName);
// We didn't find a matching frame. If aFrame has a next-in-flow,
// then continue looking there
aParentFrame = GetNifOrSpecialSibling(aFrameManager, aParentFrame);
#ifdef NOISY_FINDFRAME
if (aParentFrame) {
FFWC_nextInFlows++;
printf(" searching NIF frame %p\n", aParentFrame);
}
#endif
} while (aParentFrame);
// No matching frame
return nsnull;
}
// Request to find the primary frame associated with a given content object.
// This is typically called by the pres shell when there is no mapping in
// the pres shell hash table
NS_IMETHODIMP
nsCSSFrameConstructor::FindPrimaryFrameFor(nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIContent* aContent,
nsIFrame** aFrame,
nsFindFrameHint* aHint)
{
NS_ASSERTION(aPresContext && aFrameManager && aContent && aFrame, "bad arg");
*aFrame = nsnull; // initialize OUT parameter
// Get the pres shell
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
// We want to be able to quickly map from a content object to its frame,
// but we also want to keep the hash table small. Therefore, many frames
// are not added to the hash table when they're first created:
// - text frames
// - inline frames (often things like FONT and B)
// - BR frames
// - internal table frames (row-group, row, cell, col-group, col)
//
// That means we need to need to search for the frame
nsIFrame* parentFrame; // this pointer is used to iterate across all frames that map to parentContent
// Get the frame that corresponds to the parent content object.
// Note that this may recurse indirectly, because the pres shell will
// call us back if there is no mapping in the hash table
nsCOMPtr<nsIContent> parentContent = aContent->GetParent(); // Get this once
if (parentContent) {
aFrameManager->GetPrimaryFrameFor(parentContent, &parentFrame);
while (parentFrame) {
// Search the child frames for a match
*aFrame = FindFrameWithContent(aPresContext, aFrameManager, parentFrame,
parentContent.get(), aContent, aHint);
#ifdef NOISY_FINDFRAME
printf("FindFrameWithContent returned %p\n", *aFrame);
#endif
#ifdef DEBUG
// if we're given a hint and we were told to verify, then compare the resulting frame with
// the frame we get by calling FindFrameWithContent *without* the hint.
// Assert if they do not match
// Note that this makes finding frames *slower* than it was before the fix.
if (gVerifyFastFindFrame && aHint)
{
#ifdef NOISY_FINDFRAME
printf("VERIFYING...\n");
#endif
nsIFrame *verifyTestFrame =
FindFrameWithContent(aPresContext, aFrameManager, parentFrame,
parentContent.get(), aContent, nsnull);
#ifdef NOISY_FINDFRAME
printf("VERIFY returned %p\n", verifyTestFrame);
#endif
NS_ASSERTION(verifyTestFrame == *aFrame, "hint shortcut found wrong frame");
}
#endif
// If we found a match, then add a mapping to the hash table so
// next time this will be quick
if (*aFrame) {
aFrameManager->SetPrimaryFrameFor(aContent, *aFrame);
break;
}
else if (IsFrameSpecial(parentFrame)) {
// If it's a "special" frame (that is, part of an inline
// that's been split because it contained a block), we need to
// follow the out-of-flow "special sibling" link, and search
// *that* subtree as well.
nsIFrame* specialSibling = nsnull;
GetSpecialSibling(aFrameManager, parentFrame, &specialSibling);
parentFrame = specialSibling;
}
else {
break;
}
}
}
if (aHint && !*aFrame)
{ // if we had a hint, and we didn't get a frame, see if we should try the slow way
nsCOMPtr<nsIAtom>tag;
aContent->GetTag(getter_AddRefs(tag));
if (nsLayoutAtoms::textTagName == tag.get())
{
#ifdef NOISY_FINDFRAME
FFWC_slowSearchForText++;
#endif
// since we're passing in a null hint, we're guaranteed to only recurse once
return FindPrimaryFrameFor(aPresContext, aFrameManager, aContent, aFrame, nsnull);
}
}
#ifdef NOISY_FINDFRAME
printf("%10s %10s %10s %10s %10s \n",
"total", "doLoop", "doSibling", "recur", "nextIF", "slowSearch");
printf("%10d %10d %10d %10d %10d \n",
FFWC_totalCount, FFWC_doLoop, FFWC_doSibling, FFWC_recursions,
FFWC_nextInFlows, FFWC_slowSearchForText);
#endif
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::GetInsertionPoint(nsIPresShell* aPresShell,
nsIFrame* aParentFrame,
nsIContent* aChildContent,
nsIFrame** aInsertionPoint,
PRBool* aMultiple)
{
// Make the insertion point be the parent frame by default, in case
// we have to bail early.
*aInsertionPoint = aParentFrame;
nsIContent* container = aParentFrame->GetContent();
if (!container)
return NS_OK;
nsIDocument* document = container->GetDocument();
if (!document)
return NS_OK;
nsIBindingManager *bindingManager = document->GetBindingManager();
if (!bindingManager)
return NS_OK;
nsCOMPtr<nsIContent> insertionElement;
if (aChildContent) {
// We've got an explicit insertion child. Check to see if it's
// anonymous.
if (aChildContent->GetBindingParent() == container) {
// This child content is anonymous. Don't use the insertion
// point, since that's only for the explicit kids.
return NS_OK;
}
PRUint32 index;
bindingManager->GetInsertionPoint(container, aChildContent, getter_AddRefs(insertionElement), &index);
}
else {
PRBool multiple;
PRUint32 index;
bindingManager->GetSingleInsertionPoint(container, getter_AddRefs(insertionElement), &index, &multiple);
if (multiple && aMultiple)
*aMultiple = multiple; // Record the fact that filters are in use.
}
if (insertionElement) {
nsIFrame* insertionPoint = nsnull;
aPresShell->GetPrimaryFrameFor(insertionElement, &insertionPoint);
if (insertionPoint) {
// If the insertion point is a scrollable, then walk ``through''
// it to get the scrolled frame.
nsIScrollableFrame* scroll = nsnull;
CallQueryInterface(insertionPoint, &scroll);
if (scroll)
scroll->GetScrolledFrame(nsnull, insertionPoint);
if (insertionPoint != aParentFrame)
GetInsertionPoint(aPresShell, insertionPoint, aChildContent, aInsertionPoint, aMultiple);
}
else {
// There was no frame created yet for the insertion point.
*aInsertionPoint = nsnull;
}
}
return NS_OK;
}
// Capture state for the frame tree rooted at the frame associated with the
// content object, aContent
nsresult
nsCSSFrameConstructor::CaptureStateForFramesOf(nsIPresContext* aPresContext,
nsIContent* aContent,
nsILayoutHistoryState* aHistoryState)
{
nsCOMPtr<nsIPresShell> presShell;
nsresult rv = NS_OK;
rv = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_SUCCEEDED(rv) && presShell) {
nsIFrame* frame;
rv = presShell->GetPrimaryFrameFor(aContent, &frame);
if (NS_SUCCEEDED(rv) && frame) {
CaptureStateFor(aPresContext, frame, aHistoryState);
}
}
return rv;
}
// Capture state for the frame tree rooted at aFrame.
nsresult
nsCSSFrameConstructor::CaptureStateFor(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsILayoutHistoryState* aHistoryState)
{
nsresult rv = NS_OK;
if (aFrame && aPresContext && aHistoryState) {
nsCOMPtr<nsIPresShell> presShell;
rv = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_SUCCEEDED(rv) && presShell) {
nsCOMPtr<nsIFrameManager> frameManager;
rv = presShell->GetFrameManager(getter_AddRefs(frameManager));
if (NS_SUCCEEDED(rv) && frameManager) {
rv = frameManager->CaptureFrameState(aFrame, aHistoryState);
}
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::MaybeRecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
nsStyleContext *oldContext = frameManager->GetUndisplayedContent(aContent);
if (oldContext) {
// The parent has a frame, so try resolving a new context.
nsRefPtr<nsStyleContext> newContext =
aPresContext->ResolveStyleContextFor(aContent,
oldContext->GetParent());
frameManager->ChangeUndisplayedContent(aContent, newContext);
if (newContext->GetStyleDisplay()->mDisplay != NS_STYLE_DISPLAY_NONE) {
result = RecreateFramesForContent(aPresContext, aContent);
}
}
return result;
}
nsresult
nsCSSFrameConstructor::RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent)
{
// If there is no document, we don't want to recreate frames for it. (You
// shouldn't generally be giving this method content without a document
// anyway).
nsCOMPtr<nsIDocument> doc = aContent->GetDocument();
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
// Is the frame `special'? If so, we need to reframe the containing
// block *here*, rather than trying to remove and re-insert the
// content (which would otherwise result in *two* nested reframe
// containing block from ContentRemoved() and ContentInserted(),
// below!)
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* frame;
shell->GetPrimaryFrameFor(aContent, &frame);
if (frame) {
// If the background of the frame is painted on one of its ancestors,
// the frame reconstruct might not invalidate correctly.
nsIFrame *ancestor = frame;
const nsStyleBackground *bg;
PRBool isCanvas;
while (!nsCSSRendering::FindBackground(aPresContext, ancestor,
&bg, &isCanvas)) {
ancestor = ancestor->GetParent();
NS_ASSERTION(ancestor, "canvas must paint");
}
// This isn't the most efficient way to do it, but it saves code
// size and doesn't add much cost compared to the frame reconstruct.
if (ancestor != frame)
ApplyRenderingChangeToTree(aPresContext, ancestor, nsnull,
nsChangeHint_RepaintFrame);
}
if (frame && IsFrameSpecial(frame)) {
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::RecreateFramesForContent: frame=");
nsFrame::ListTag(stdout, frame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, frame);
}
nsresult rv = NS_OK;
nsCOMPtr<nsIContent> container = aContent->GetParent();
if (container) {
PRInt32 indexInContainer = container->IndexOf(aContent);
// Before removing the frames associated with the content object,
// ask them to save their state onto a temporary state object.
CaptureStateForFramesOf(aPresContext, aContent, mTempFrameTreeState);
// Save parent frame because this frame is going away. But if
// this is an out-of-flow, we want to get the _placeholder_'s
// parent.
nsIFrame* parent = nsnull;
if (frame) {
if (frame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
shell->GetPlaceholderFrameFor(frame, &frame);
NS_ASSERTION(frame, "Out-of-flow with no placeholder?");
}
frame = frame->GetParent();
}
// Remove the frames associated with the content object on which
// the attribute change occurred.
rv = ContentRemoved(aPresContext, container, aContent, indexInContainer,
PR_FALSE);
if (NS_SUCCEEDED(rv)) {
// Now, recreate the frames associated with this content object.
rv = ContentInserted(aPresContext, container, parent, aContent,
indexInContainer, mTempFrameTreeState, PR_FALSE);
}
} else {
// The content is the root node, so just rebuild the world.
// However, double check that it's really part of the document,
// since rebuilding the frame tree can have bad effects, especially
// if it's the frame tree for chrome (see bug 157322).
nsIDocument* doc = aContent->GetDocument();
NS_ASSERTION(doc, "received style change for content not in document");
if (doc)
ReconstructDocElementHierarchy(aPresContext);
}
return rv;
}
//////////////////////////////////////////////////////////////////////
// Block frame construction code
already_AddRefed<nsStyleContext>
nsCSSFrameConstructor::GetFirstLetterStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsStyleContext* aStyleContext)
{
if (aContent) {
return aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSPseudoElements::firstLetter,
aStyleContext);
}
return nsnull;
}
already_AddRefed<nsStyleContext>
nsCSSFrameConstructor::GetFirstLineStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsStyleContext* aStyleContext)
{
if (aContent) {
return aPresContext->ResolvePseudoStyleContextFor(aContent,
nsCSSPseudoElements::firstLine,
aStyleContext);
}
return nsnull;
}
// Predicate to see if a given content (block element) has
// first-letter style applied to it.
PRBool
nsCSSFrameConstructor::HaveFirstLetterStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsStyleContext* aStyleContext)
{
return nsLayoutUtils::HasPseudoStyle(aContent, aStyleContext,
nsCSSPseudoElements::firstLetter,
aPresContext);
}
PRBool
nsCSSFrameConstructor::HaveFirstLineStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsStyleContext* aStyleContext)
{
return nsLayoutUtils::HasPseudoStyle(aContent, aStyleContext,
nsCSSPseudoElements::firstLine,
aPresContext);
}
void
nsCSSFrameConstructor::HaveSpecialBlockStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsStyleContext* aStyleContext,
PRBool* aHaveFirstLetterStyle,
PRBool* aHaveFirstLineStyle)
{
*aHaveFirstLetterStyle =
HaveFirstLetterStyle(aPresContext, aContent, aStyleContext);
*aHaveFirstLineStyle =
HaveFirstLineStyle(aPresContext, aContent, aStyleContext);
}
/**
* Request to process the child content elements and create frames.
*
* @param aContent the content object whose child elements to process
* @param aFrame the the associated with aContent. This will be the
* parent frame (both content and geometric) for the flowed
* child frames
*/
nsresult
nsCSSFrameConstructor::ProcessChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
PRBool aCanHaveGeneratedContent,
nsFrameItems& aFrameItems,
PRBool aParentIsBlock,
nsTableCreator* aTableCreator)
{
nsresult rv = NS_OK;
nsStyleContext* styleContext = aFrame->GetStyleContext();
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSPseudoElements::before,
nsnull, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
if (aTableCreator) { // do special table child processing
// if there is a caption child here, it gets recorded in aState.mPseudoFrames.
nsIFrame* captionFrame;
TableProcessChildren(aPresShell, aPresContext, aState, aContent, aFrame,
*aTableCreator, aFrameItems, captionFrame);
}
else {
// save the incoming pseudo frame state
nsPseudoFrames priorPseudoFrames;
aState.mPseudoFrames.Reset(&priorPseudoFrames);
ChildIterator iter, last;
for (ChildIterator::Init(aContent, &iter, &last);
iter != last;
++iter) {
rv = ConstructFrame(aPresShell, aPresContext, aState, nsCOMPtr<nsIContent>(*iter),
aFrame, aFrameItems);
if (NS_FAILED(rv))
return rv;
}
// process the current pseudo frame state
if (!aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// restore the incoming pseudo frame state
aState.mPseudoFrames = priorPseudoFrames;
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSPseudoElements::after,
nsnull, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
if (aParentIsBlock) {
if (aState.mFirstLetterStyle) {
rv = WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState, aContent, aFrame, aFrameItems);
}
if (aState.mFirstLineStyle) {
rv = WrapFramesInFirstLineFrame(aPresShell, aPresContext, aState, aContent, aFrame, aFrameItems);
}
}
return rv;
}
//----------------------------------------------------------------------
// Support for :first-line style
static void
ReparentFrame(nsIPresContext* aPresContext,
nsIFrame* aNewParentFrame,
nsStyleContext* aParentStyleContext,
nsIFrame* aFrame)
{
aPresContext->ReParentStyleContext(aFrame, aParentStyleContext);
aFrame->SetParent(aNewParentFrame);
}
// Special routine to handle placing a list of frames into a block
// frame that has first-line style. The routine ensures that the first
// collection of inline frames end up in a first-line frame.
nsresult
nsCSSFrameConstructor::WrapFramesInFirstLineFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
nsFrameItems& aFrameItems)
{
nsresult rv = NS_OK;
// Find the first and last inline frame in aFrameItems
nsIFrame* kid = aFrameItems.childList;
nsIFrame* firstInlineFrame = nsnull;
nsIFrame* lastInlineFrame = nsnull;
while (kid) {
if (IsInlineFrame(kid)) {
if (!firstInlineFrame) firstInlineFrame = kid;
lastInlineFrame = kid;
}
else {
break;
}
kid = kid->GetNextSibling();
}
// If we don't find any inline frames, then there is nothing to do
if (!firstInlineFrame) {
return rv;
}
// Create line frame
nsStyleContext* parentStyle = aFrame->GetStyleContext();
nsRefPtr<nsStyleContext> firstLineStyle(
getter_AddRefs(GetFirstLineStyle(aPresContext, aContent, parentStyle))
);
nsIFrame* lineFrame;
rv = NS_NewFirstLineFrame(aPresShell, &lineFrame);
if (NS_SUCCEEDED(rv)) {
// Initialize the line frame
rv = InitAndRestoreFrame(aPresContext, aState, aContent,
aFrame, firstLineStyle, nsnull, lineFrame);
// Mangle the list of frames we are giving to the block: first
// chop the list in two after lastInlineFrame
nsIFrame* secondBlockFrame = lastInlineFrame->GetNextSibling();
lastInlineFrame->SetNextSibling(nsnull);
// The lineFrame will be the block's first child; the rest of the
// frame list (after lastInlineFrame) will be the second and
// subsequent children; join the list together and reset
// aFrameItems appropriately.
if (secondBlockFrame) {
lineFrame->SetNextSibling(secondBlockFrame);
}
if (aFrameItems.childList == lastInlineFrame) {
// Just in case the block had exactly one inline child
aFrameItems.lastChild = lineFrame;
}
aFrameItems.childList = lineFrame;
// Give the inline frames to the lineFrame <b>after</b> reparenting them
kid = firstInlineFrame;
while (kid) {
ReparentFrame(aPresContext, lineFrame, firstLineStyle, kid);
kid = kid->GetNextSibling();
}
lineFrame->SetInitialChildList(aPresContext, nsnull, firstInlineFrame);
}
return rv;
}
// Special routine to handle appending a new frame to a block frame's
// child list. Takes care of placing the new frame into the right
// place when first-line style is present.
nsresult
nsCSSFrameConstructor::AppendFirstLineFrames(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aBlockFrame,
nsFrameItems& aFrameItems)
{
// It's possible that aBlockFrame needs to have a first-line frame
// created because it doesn't currently have any children.
nsIFrame* blockKid;
aBlockFrame->FirstChild(aPresContext, nsnull, &blockKid);
if (!blockKid) {
return WrapFramesInFirstLineFrame(aPresShell, aPresContext, aState, aContent,
aBlockFrame, aFrameItems);
}
// Examine the last block child - if it's a first-line frame then
// appended frames need special treatment.
nsresult rv = NS_OK;
nsFrameList blockFrames(blockKid);
nsIFrame* lastBlockKid = blockFrames.LastChild();
nsCOMPtr<nsIAtom> frameType;
lastBlockKid->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() != nsLayoutAtoms::lineFrame) {
// No first-line frame at the end of the list, therefore there is
// an interveening block between any first-line frame the frames
// we are appending. Therefore, we don't need any special
// treatment of the appended frames.
return rv;
}
nsIFrame* lineFrame = lastBlockKid;
nsStyleContext* firstLineStyle = lineFrame->GetStyleContext();
// Find the first and last inline frame in aFrameItems
nsIFrame* kid = aFrameItems.childList;
nsIFrame* firstInlineFrame = nsnull;
nsIFrame* lastInlineFrame = nsnull;
while (kid) {
if (IsInlineFrame(kid)) {
if (!firstInlineFrame) firstInlineFrame = kid;
lastInlineFrame = kid;
}
else {
break;
}
kid = kid->GetNextSibling();
}
// If we don't find any inline frames, then there is nothing to do
if (!firstInlineFrame) {
return rv;
}
// The inline frames get appended to the lineFrame. Make sure they
// are reparented properly.
nsIFrame* remainingFrames = lastInlineFrame->GetNextSibling();
lastInlineFrame->SetNextSibling(nsnull);
kid = firstInlineFrame;
while (kid) {
ReparentFrame(aPresContext, lineFrame, firstLineStyle, kid);
kid = kid->GetNextSibling();
}
aState.mFrameManager->AppendFrames(lineFrame, nsnull, firstInlineFrame);
// The remaining frames get appended to the block frame
if (remainingFrames) {
aFrameItems.childList = remainingFrames;
}
else {
aFrameItems.childList = nsnull;
aFrameItems.lastChild = nsnull;
}
return rv;
}
// Special routine to handle inserting a new frame into a block
// frame's child list. Takes care of placing the new frame into the
// right place when first-line style is present.
nsresult
nsCSSFrameConstructor::InsertFirstLineFrames(
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aBlockFrame,
nsIFrame** aParentFrame,
nsIFrame* aPrevSibling,
nsFrameItems& aFrameItems)
{
nsresult rv = NS_OK;
#if 0
nsIFrame* parentFrame = *aParentFrame;
nsIFrame* newFrame = aFrameItems.childList;
PRBool isInline = IsInlineFrame(newFrame);
if (!aPrevSibling) {
// Insertion will become the first frame. Two cases: we either
// already have a first-line frame or we don't.
nsIFrame* firstBlockKid;
aBlockFrame->FirstChild(nsnull, &firstBlockKid);
nsCOMPtr<nsIAtom> frameType;
firstBlockKid->GetFrameType(getter_AddRefs(frameType));
if (frameType.get() == nsLayoutAtoms::lineFrame) {
// We already have a first-line frame
nsIFrame* lineFrame = firstBlockKid;
nsStyleContext* firstLineStyle = lineFrame->GetStyleContext();
if (isInline) {
// Easy case: the new inline frame will go into the lineFrame.
ReparentFrame(aPresContext, lineFrame, firstLineStyle, newFrame);
aState.mFrameManager->InsertFrames(lineFrame, nsnull, nsnull,
newFrame);
// Since the frame is going into the lineFrame, don't let it
// go into the block too.
aFrameItems.childList = nsnull;
aFrameItems.lastChild = nsnull;
}
else {
// Harder case: We are about to insert a block level element
// before the first-line frame.
// XXX need a method to steal away frames from the line-frame
}
}
else {
// We do not have a first-line frame
if (isInline) {
// We now need a first-line frame to contain the inline frame.
nsIFrame* lineFrame;
rv = NS_NewFirstLineFrame(&lineFrame);
if (NS_SUCCEEDED(rv)) {
// Lookup first-line style context
nsStyleContext* parentStyle = aBlockFrame->GetStyleContext();
nsRefPtr<nsStyleContext> firstLineStyle(
getter_AddRefs(GetFirstLineStyle(aPresContext, aContent,
parentStyle))
);
// Initialize the line frame
rv = InitAndRestoreFrame(aPresContext, aState, aContent,
aBlockFrame, firstLineStyle, nsnull, lineFrame);
// Make sure the caller inserts the lineFrame into the
// blocks list of children.
aFrameItems.childList = lineFrame;
aFrameItems.lastChild = lineFrame;
// Give the inline frames to the lineFrame <b>after</b>
// reparenting them
ReparentFrame(aPresContext, lineFrame, firstLineStyle, newFrame);
lineFrame->SetInitialChildList(aPresContext, nsnull, newFrame);
}
}
else {
// Easy case: the regular insertion logic can insert the new
// frame because its a block frame.
}
}
}
else {
// Insertion will not be the first frame.
nsIFrame* prevSiblingParent = aPrevSibling->GetParent();
if (prevSiblingParent == aBlockFrame) {
// Easy case: The prev-siblings parent is the block
// frame. Therefore the prev-sibling is not currently in a
// line-frame. Therefore the new frame which is going after it,
// regardless of type, is not going into a line-frame.
}
else {
// If the prevSiblingParent is not the block-frame then it must
// be a line-frame (if it were a letter-frame, that logic would
// already have adjusted the prev-sibling to be the
// letter-frame).
if (isInline) {
// Easy case: the insertion can go where the caller thinks it
// should go (which is into prevSiblingParent).
}
else {
// Block elements don't end up in line-frames, therefore
// change the insertion point to aBlockFrame. However, there
// might be more inline elements following aPrevSibling that
// need to be pulled out of the line-frame and become children
// of the block.
nsIFrame* nextSibling = aPrevSibling->GetNextSibling();
nsIFrame* nextLineFrame;
prevSiblingParent->GetNextInFlow(&nextLineFrame);
if (nextSibling || nextLineFrame) {
// Oy. We have work to do. Create a list of the new frames
// that are going into the block by stripping them away from
// the line-frame(s).
nsFrameList list(nextSibling);
if (nextSibling) {
nsLineFrame* lineFrame = (nsLineFrame*) prevSiblingParent;
lineFrame->StealFramesFrom(nextSibling);
}
nsLineFrame* nextLineFrame = (nsLineFrame*) lineFrame;
for (;;) {
nextLineFrame->GetNextInFlow(&nextLineFrame);
if (!nextLineFrame) {
break;
}
nsIFrame* kids;
nextLineFrame->FirstChild(nsnull, &kids);
}
}
else {
// We got lucky: aPrevSibling was the last inline frame in
// the line-frame.
ReparentFrame(aPresContext, aBlockFrame, firstLineStyle, newFrame);
aState.mFrameManager->InsertFrames(aPresContext, *aState.mPresShell,
aBlockFrame, nsnull,
prevSiblingParent, newFrame);
aFrameItems.childList = nsnull;
aFrameItems.lastChild = nsnull;
}
}
}
}
#endif
return rv;
}
//----------------------------------------------------------------------
// First-letter support
// Determine how many characters in the text fragment apply to the
// first letter
static PRInt32
FirstLetterCount(const nsTextFragment* aFragment)
{
PRInt32 count = 0;
PRInt32 firstLetterLength = 0;
PRBool done = PR_FALSE;
PRInt32 i, n = aFragment->GetLength();
for (i = 0; i < n; i++) {
PRUnichar ch = aFragment->CharAt(i);
if (XP_IS_SPACE(ch)) {
if (firstLetterLength) {
done = PR_TRUE;
break;
}
count++;
continue;
}
// XXX I18n
if ((ch == '\'') || (ch == '\"')) {
if (firstLetterLength) {
done = PR_TRUE;
break;
}
// keep looping
firstLetterLength = 1;
}
else {
count++;
done = PR_TRUE;
break;
}
}
return count;
}
static PRBool
NeedFirstLetterContinuation(nsIContent* aContent)
{
NS_PRECONDITION(aContent, "null ptr");
PRBool result = PR_FALSE;
if (aContent) {
nsCOMPtr<nsITextContent> tc(do_QueryInterface(aContent));
if (tc) {
const nsTextFragment* frag = nsnull;
tc->GetText(&frag);
PRInt32 flc = FirstLetterCount(frag);
PRInt32 tl = frag->GetLength();
if (flc < tl) {
result = PR_TRUE;
}
}
}
return result;
}
static PRBool IsFirstLetterContent(nsIContent* aContent)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsITextContent> textContent = do_QueryInterface(aContent);
if (textContent) {
PRInt32 textLength;
textContent->GetTextLength(&textLength);
if (textLength) {
PRBool onlyWhiteSpace;
textContent->IsOnlyWhitespace(&onlyWhiteSpace);
result = !onlyWhiteSpace;
}
}
return result;
}
/**
* Create a letter frame, only make it a floating frame.
*/
void
nsCSSFrameConstructor::CreateFloatingLetterFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aTextContent,
nsIFrame* aTextFrame,
nsIContent* aBlockContent,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
nsFrameItems& aResult)
{
// Create the first-letter-frame
nsIFrame* letterFrame;
NS_NewFirstLetterFrame(aPresShell, &letterFrame);
InitAndRestoreFrame(aPresContext, aState, aTextContent,
aParentFrame, aStyleContext, nsnull, letterFrame);
// Init the text frame to refer to the letter frame. Make sure we
// get a proper style context for it (the one passed in is for the
// letter frame and will have the float property set on it; the text
// frame shouldn't have that set).
nsRefPtr<nsStyleContext> textSC;
textSC = aPresContext->ResolveStyleContextForNonElement(aStyleContext);
InitAndRestoreFrame(aPresContext, aState, aTextContent,
letterFrame, textSC, nsnull, aTextFrame);
// And then give the text frame to the letter frame
letterFrame->SetInitialChildList(aPresContext, nsnull, aTextFrame);
// Now make the placeholder
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresShell, aPresContext, aState.mFrameManager,
aTextContent, letterFrame,
aStyleContext, aParentFrame,
&placeholderFrame);
// See if we will need to continue the text frame (does it contain
// more than just the first-letter text or not?) If it does, then we
// create (in advance) a continuation frame for it.
nsIFrame* nextTextFrame = nsnull;
if (NeedFirstLetterContinuation(aTextContent)) {
// Create continuation
CreateContinuingFrame(aPresShell, aPresContext, aTextFrame, aParentFrame,
&nextTextFrame);
// Repair the continuations style context
nsStyleContext* parentStyleContext = aStyleContext->GetParent();
if (parentStyleContext) {
nsRefPtr<nsStyleContext> newSC;
newSC = aPresContext->ResolveStyleContextForNonElement(parentStyleContext);
if (newSC) {
nextTextFrame->SetStyleContext(aPresContext, newSC);
}
}
}
// Update the child lists for the frame containing the floating first
// letter frame.
aState.mFloatedItems.AddChild(letterFrame);
aResult.childList = aResult.lastChild = placeholderFrame;
if (nextTextFrame) {
aResult.AddChild(nextTextFrame);
}
}
/**
* Create a new letter frame for aTextFrame. The letter frame will be
* a child of aParentFrame.
*/
nsresult
nsCSSFrameConstructor::CreateLetterFrame(nsIPresShell* aPresShell, nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aTextContent,
nsIFrame* aParentFrame,
nsFrameItems& aResult)
{
NS_PRECONDITION(aTextContent->IsContentOfType(nsIContent::eTEXT),
"aTextContent isn't text");
// Get style context for the first-letter-frame
nsStyleContext* parentStyleContext = aParentFrame->GetStyleContext();
if (parentStyleContext) {
// Use content from containing block so that we can actually
// find a matching style rule.
nsIContent* blockContent = aState.mFloatedItems.containingBlock->GetContent();
// Create first-letter style rule
nsRefPtr<nsStyleContext> sc = getter_AddRefs(
GetFirstLetterStyle(aPresContext, blockContent, parentStyleContext));
if (sc) {
// Create a new text frame (the original one will be discarded)
nsIFrame* textFrame;
NS_NewTextFrame(aPresShell, &textFrame);
// Create the right type of first-letter frame
const nsStyleDisplay* display = sc->GetStyleDisplay();
if (display->IsFloating()) {
// Make a floating first-letter frame
CreateFloatingLetterFrame(aPresShell, aPresContext, aState,
aTextContent, textFrame,
blockContent, aParentFrame,
sc, aResult);
}
else {
// Make an inflow first-letter frame
nsIFrame* letterFrame;
nsresult rv = NS_NewFirstLetterFrame(aPresShell, &letterFrame);
if (NS_SUCCEEDED(rv)) {
// Initialize the first-letter-frame.
letterFrame->Init(aPresContext, aTextContent, aParentFrame,
sc, nsnull);
nsRefPtr<nsStyleContext> textSC;
textSC = aPresContext->ResolveStyleContextForNonElement(sc);
InitAndRestoreFrame(aPresContext, aState, aTextContent,
letterFrame, textSC, nsnull, textFrame);
letterFrame->SetInitialChildList(aPresContext, nsnull, textFrame);
aResult.childList = aResult.lastChild = letterFrame;
}
}
}
}
return NS_OK;
}
nsresult
nsCSSFrameConstructor::WrapFramesInFirstLetterFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aBlockContent,
nsIFrame* aBlockFrame,
nsFrameItems& aBlockFrames)
{
nsresult rv = NS_OK;
nsIFrame* parentFrame = nsnull;
nsIFrame* textFrame = nsnull;
nsIFrame* prevFrame = nsnull;
nsFrameItems letterFrames;
PRBool stopLooking = PR_FALSE;
rv = WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState,
aBlockFrame, aBlockFrames.childList,
&parentFrame, &textFrame, &prevFrame,
letterFrames, &stopLooking);
if (NS_FAILED(rv)) {
return rv;
}
if (parentFrame) {
if (parentFrame == aBlockFrame) {
// Text textFrame out of the blocks frame list and substitute the
// letter frame(s) instead.
nsIFrame* nextSibling = textFrame->GetNextSibling();
textFrame->SetNextSibling(nsnull);
if (prevFrame) {
prevFrame->SetNextSibling(letterFrames.childList);
}
else {
aBlockFrames.childList = letterFrames.childList;
}
letterFrames.lastChild->SetNextSibling(nextSibling);
// Destroy the old textFrame
textFrame->Destroy(aPresContext);
// Repair lastChild; the only time this needs to happen is when
// the block had one child (the text frame).
if (!nextSibling) {
aBlockFrames.lastChild = letterFrames.lastChild;
}
}
else {
// Take the old textFrame out of the inline parents child list
DeletingFrameSubtree(aPresContext, aState.mPresShell,
aState.mFrameManager, textFrame);
parentFrame->RemoveFrame(aPresContext, *aState.mPresShell.get(),
nsnull, textFrame);
// Insert in the letter frame(s)
parentFrame->InsertFrames(aPresContext, *aState.mPresShell.get(),
nsnull, prevFrame, letterFrames.childList);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::WrapFramesInFirstLetterFrame(
nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aParentFrame,
nsIFrame* aParentFrameList,
nsIFrame** aModifiedParent,
nsIFrame** aTextFrame,
nsIFrame** aPrevFrame,
nsFrameItems& aLetterFrames,
PRBool* aStopLooking)
{
nsresult rv = NS_OK;
nsIFrame* prevFrame = nsnull;
nsIFrame* frame = aParentFrameList;
while (frame) {
nsIFrame* nextFrame = frame->GetNextSibling();
nsCOMPtr<nsIAtom> frameType;
frame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::textFrame == frameType.get()) {
// Wrap up first-letter content in a letter frame
nsIContent* textContent = frame->GetContent();
if (IsFirstLetterContent(textContent)) {
// Create letter frame to wrap up the text
rv = CreateLetterFrame(aPresShell, aPresContext, aState, textContent,
aParentFrame, aLetterFrames);
if (NS_FAILED(rv)) {
return rv;
}
// Provide adjustment information for parent
*aModifiedParent = aParentFrame;
*aTextFrame = frame;
*aPrevFrame = prevFrame;
*aStopLooking = PR_TRUE;
return NS_OK;
}
}
else if ((nsLayoutAtoms::inlineFrame == frameType.get()) ||
(nsLayoutAtoms::lineFrame == frameType.get())) {
nsIFrame* kids;
frame->FirstChild(aPresContext, nsnull, &kids);
WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState, frame, kids,
aModifiedParent, aTextFrame,
aPrevFrame, aLetterFrames, aStopLooking);
if (*aStopLooking) {
return NS_OK;
}
}
else {
// This will stop us looking to create more letter frames. For
// example, maybe the frame-type is "letterFrame" or
// "placeholderFrame". This keeps us from creating extra letter
// frames, and also prevents us from creating letter frames when
// the first real content child of a block is not text (e.g. an
// image, hr, etc.)
*aStopLooking = PR_TRUE;
break;
}
prevFrame = frame;
frame = nextFrame;
}
return rv;
}
nsresult
nsCSSFrameConstructor::RemoveFloatingFirstLetterFrames(
nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aBlockFrame,
PRBool* aStopLooking)
{
// First look for the float frame that is a letter frame
nsIFrame* floatFrame;
aBlockFrame->FirstChild(aPresContext, nsLayoutAtoms::floatList, &floatFrame);
while (floatFrame) {
// See if we found a floating letter frame
nsCOMPtr<nsIAtom> frameType;
floatFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::letterFrame == frameType.get()) {
break;
}
floatFrame = floatFrame->GetNextSibling();
}
if (!floatFrame) {
// No such frame
return NS_OK;
}
// Take the text frame away from the letter frame (so it isn't
// destroyed when we destroy the letter frame).
nsIFrame* textFrame;
floatFrame->FirstChild(aPresContext, nsnull, &textFrame);
if (!textFrame) {
return NS_OK;
}
// Discover the placeholder frame for the letter frame
nsIFrame* parentFrame;
nsPlaceholderFrame* placeholderFrame;
aFrameManager->GetPlaceholderFrameFor(floatFrame,
(nsIFrame**)&placeholderFrame);
if (!placeholderFrame) {
// Somethings really wrong
return NS_OK;
}
parentFrame = placeholderFrame->GetParent();
if (!parentFrame) {
// Somethings really wrong
return NS_OK;
}
// Create a new text frame with the right style context that maps
// all of the content that was previously part of the letter frame
// (and probably continued elsewhere).
nsStyleContext* parentSC = parentFrame->GetStyleContext();
if (!parentSC) {
return NS_OK;
}
nsIContent* textContent = textFrame->GetContent();
if (!textContent) {
return NS_OK;
}
nsRefPtr<nsStyleContext> newSC;
newSC = aPresContext->ResolveStyleContextForNonElement(parentSC);
if (!newSC) {
return NS_OK;
}
nsIFrame* newTextFrame;
nsresult rv = NS_NewTextFrame(aPresShell, &newTextFrame);
if (NS_FAILED(rv)) {
return rv;
}
newTextFrame->Init(aPresContext, textContent, parentFrame, newSC, nsnull);
// Destroy the old text frame's continuations (the old text frame
// will be destroyed when its letter frame is destroyed).
nsIFrame* nextTextFrame;
textFrame->GetNextInFlow(&nextTextFrame);
if (nextTextFrame) {
nsIFrame* nextTextParent = nextTextFrame->GetParent();
if (nextTextParent) {
nsSplittableFrame::BreakFromPrevFlow(nextTextFrame);
DeletingFrameSubtree(aPresContext, aPresShell,
aFrameManager, nextTextFrame);
aFrameManager->RemoveFrame(nextTextParent, nsnull, nextTextFrame);
}
}
// First find out where (in the content) the placeholder frames
// text is and its previous sibling frame, if any.
nsIFrame* prevSibling = nsnull;
nsIContent* container = parentFrame->GetContent();
if (container && textContent) {
PRInt32 ix = container->IndexOf(textContent);
prevSibling = FindPreviousSibling(aPresShell, container, aBlockFrame, ix);
}
// Now that everything is set...
#ifdef NOISY_FIRST_LETTER
printf("RemoveFloatingFirstLetterFrames: textContent=%p oldTextFrame=%p newTextFrame=%p\n",
textContent.get(), textFrame, newTextFrame);
#endif
// Should we call DeletingFrameSubtree on the placeholder instead
// and skip this call?
aFrameManager->UnregisterPlaceholderFrame(placeholderFrame);
// Remove the float frame
DeletingFrameSubtree(aPresContext, aPresShell, aFrameManager, floatFrame);
aFrameManager->RemoveFrame(aBlockFrame, nsLayoutAtoms::floatList,
floatFrame);
// Remove placeholder frame
aFrameManager->RemoveFrame(parentFrame, nsnull, placeholderFrame);
// Insert text frame in its place
aFrameManager->InsertFrames(parentFrame, nsnull,
prevSibling, newTextFrame);
return NS_OK;
}
nsresult
nsCSSFrameConstructor::RemoveFirstLetterFrames(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aFrame,
PRBool* aStopLooking)
{
nsIFrame* kid;
nsIFrame* prevSibling = nsnull;
aFrame->FirstChild(aPresContext, nsnull, &kid);
while (kid) {
nsCOMPtr<nsIAtom> frameType;
kid->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::letterFrame == frameType.get()) {
// Bingo. Found it. First steal away the text frame.
nsIFrame* textFrame;
kid->FirstChild(aPresContext, nsnull, &textFrame);
if (!textFrame) {
break;
}
// Create a new textframe
nsStyleContext* parentSC = aFrame->GetStyleContext();
if (!parentSC) {
break;
}
nsIContent* textContent = textFrame->GetContent();
if (!textContent) {
break;
}
nsRefPtr<nsStyleContext> newSC;
newSC = aPresContext->ResolveStyleContextForNonElement(parentSC);
if (!newSC) {
break;
}
NS_NewTextFrame(aPresShell, &textFrame);
textFrame->Init(aPresContext, textContent, aFrame, newSC, nsnull);
// Next rip out the kid and replace it with the text frame
nsIFrameManager* frameManager = aFrameManager;
DeletingFrameSubtree(aPresContext, aPresShell, frameManager, kid);
frameManager->RemoveFrame(aFrame, nsnull, kid);
// Insert text frame in its place
frameManager->InsertFrames(aFrame, nsnull,
prevSibling, textFrame);
*aStopLooking = PR_TRUE;
break;
}
else if ((nsLayoutAtoms::inlineFrame == frameType.get()) ||
(nsLayoutAtoms::lineFrame == frameType.get())) {
// Look inside child inline frame for the letter frame
RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager, kid,
aStopLooking);
if (*aStopLooking) {
break;
}
}
prevSibling = kid;
kid = kid->GetNextSibling();
}
return NS_OK;
}
nsresult
nsCSSFrameConstructor::RemoveLetterFrames(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager,
nsIFrame* aBlockFrame)
{
PRBool stopLooking = PR_FALSE;
nsresult rv = RemoveFloatingFirstLetterFrames(aPresContext, aPresShell,
aFrameManager,
aBlockFrame, &stopLooking);
if (NS_SUCCEEDED(rv) && !stopLooking) {
rv = RemoveFirstLetterFrames(aPresContext, aPresShell, aFrameManager,
aBlockFrame, &stopLooking);
}
return rv;
}
// Fixup the letter frame situation for the given block
nsresult
nsCSSFrameConstructor::RecoverLetterFrames(nsIPresShell* aPresShell, nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aBlockFrame)
{
nsresult rv = NS_OK;
nsIFrame* blockKids;
aBlockFrame->FirstChild(aPresContext, nsnull, &blockKids);
nsIFrame* parentFrame = nsnull;
nsIFrame* textFrame = nsnull;
nsIFrame* prevFrame = nsnull;
nsFrameItems letterFrames;
PRBool stopLooking = PR_FALSE;
rv = WrapFramesInFirstLetterFrame(aPresShell, aPresContext, aState,
aBlockFrame, blockKids,
&parentFrame, &textFrame, &prevFrame,
letterFrames, &stopLooking);
if (NS_FAILED(rv)) {
return rv;
}
if (parentFrame) {
// Take the old textFrame out of the parents child list
DeletingFrameSubtree(aPresContext, aState.mPresShell,
aState.mFrameManager, textFrame);
parentFrame->RemoveFrame(aPresContext, *aState.mPresShell.get(),
nsnull, textFrame);
// Insert in the letter frame(s)
parentFrame->InsertFrames(aPresContext, *aState.mPresShell.get(),
nsnull, prevFrame, letterFrames.childList);
// Insert in floats too if needed
if (aState.mFloatedItems.childList) {
aBlockFrame->AppendFrames(aPresContext, *aState.mPresShell.get(),
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
}
return rv;
}
//----------------------------------------------------------------------
// listbox Widget Routines
NS_IMETHODIMP
nsCSSFrameConstructor::CreateListBoxContent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIFrame* aPrevFrame,
nsIContent* aChild,
nsIFrame** aNewFrame,
PRBool aIsAppend,
PRBool aIsScrollbar,
nsILayoutHistoryState* aFrameState)
{
#ifdef MOZ_XUL
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
// Construct a new frame
if (nsnull != aParentFrame) {
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, aParentFrame),
GetFloatContainingBlock(aPresContext, aParentFrame),
mTempFrameTreeState);
nsRefPtr<nsStyleContext> styleContext;
styleContext = ResolveStyleContext(aPresContext, aParentFrame, aChild);
// Pre-check for display "none" - only if we find that, do we create
// any frame at all
const nsStyleDisplay* display = styleContext->GetStyleDisplay();
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
*aNewFrame = nsnull;
return NS_OK;
}
nsCOMPtr<nsIAtom> tag;
aChild->GetTag(getter_AddRefs(tag));
PRInt32 namespaceID;
aChild->GetNameSpaceID(&namespaceID);
rv = ConstructFrameInternal(shell, aPresContext, state, aChild, aParentFrame, tag, namespaceID,
styleContext, frameItems, PR_FALSE);
nsIFrame* newFrame = frameItems.childList;
*aNewFrame = newFrame;
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
mDocument->GetBindingManager()->ProcessAttachedQueue();
// Notify the parent frame
if (aIsAppend)
rv = ((nsListBoxBodyFrame*)aParentFrame)->ListBoxAppendFrames(newFrame);
else
rv = ((nsListBoxBodyFrame*)aParentFrame)->ListBoxInsertFrames(aPrevFrame, newFrame);
InsertOutOfFlowFrames(state, aPresContext);
}
}
return rv;
#else
return NS_ERROR_FAILURE;
#endif
}
//----------------------------------------
nsresult
nsCSSFrameConstructor::ConstructBlock(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIFrame* aContentParentFrame,
nsStyleContext* aStyleContext,
nsIFrame* aNewFrame,
PRBool aRelPos)
{
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
// See if we need to create a view, e.g. the frame is absolutely positioned
nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, aContentParentFrame,
PR_FALSE);
// If we're the first block to be created (e.g., because we're
// contained inside a XUL document), then make sure that we've got a
// space manager so we can handle floats...
if (! aState.mFloatedItems.containingBlock) {
aNewFrame->AddStateBits(NS_BLOCK_SPACE_MGR | NS_BLOCK_MARGIN_ROOT);
}
// ...and that we're the absolute containing block.
nsFrameConstructorSaveState absoluteSaveState;
if (aRelPos || !aState.mAbsoluteItems.containingBlock) {
NS_ASSERTION(aRelPos, "should have made area frame for this");
aState.PushAbsoluteContainingBlock(aPresContext, aNewFrame, absoluteSaveState);
}
// See if the block has first-letter style applied to it...
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
// Process the child content
nsFrameItems childItems;
nsFrameConstructorSaveState floatSaveState;
aState.PushFloatContainingBlock(aNewFrame, floatSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
nsresult rv = ProcessChildren(aPresShell, aPresContext, aState, aContent,
aNewFrame, PR_TRUE, childItems, PR_TRUE);
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
CreateAnonymousFrames(aPresShell, aPresContext, tag, aState, aContent, aNewFrame,
PR_FALSE, childItems);
// Set the frame's initial child list
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// Set the frame's float list if there were any floated children
if (aState.mFloatedItems.childList) {
aNewFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
// and the same for absolutely positioned children.
if (aRelPos && aState.mAbsoluteItems.childList) {
aNewFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
return rv;
}
PRBool
nsCSSFrameConstructor::AreAllKidsInline(nsIFrame* aFrameList)
{
nsIFrame* kid = aFrameList;
while (kid) {
if (!IsInlineFrame(kid)) {
return PR_FALSE;
}
kid = kid->GetNextSibling();
}
return PR_TRUE;
}
nsresult
nsCSSFrameConstructor::ConstructInline(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsStyleContext* aStyleContext,
PRBool aIsPositioned,
nsIFrame* aNewFrame,
nsIFrame** aNewBlockFrame,
nsIFrame** aNextInlineFrame)
{
// Initialize the frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
nsFrameConstructorSaveState absoluteSaveState; // definition cannot be inside next block
// because the object's destructor is significant
// this is part of the fix for bug 42372
// Any inline frame might need a view (because of opacity, or fixed background)
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aNewFrame, nsnull, PR_FALSE);
if (aIsPositioned) {
// Relatively positioned frames becomes a container for child
// frames that are positioned
aState.PushAbsoluteContainingBlock(aPresContext, aNewFrame, absoluteSaveState);
}
// Process the child content
nsFrameItems childItems;
PRBool kidsAllInline;
nsresult rv = ProcessInlineChildren(aPresShell, aPresContext, aState, aContent,
aNewFrame, PR_TRUE, childItems, &kidsAllInline);
if (kidsAllInline) {
// Set the inline frame's initial child list
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(getter_AddRefs(tag));
CreateAnonymousFrames(aPresShell, aPresContext, tag, aState, aContent, aNewFrame,
PR_FALSE, childItems);
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aIsPositioned) {
if (aState.mAbsoluteItems.childList) {
aNewFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
aNewFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
}
*aNewBlockFrame = nsnull;
*aNextInlineFrame = nsnull;
return rv;
}
// This inline frame contains several types of children. Therefore
// this frame has to be chopped into several pieces. We will produce
// as a result of this 3 lists of children. The first list contains
// all of the inline children that preceed the first block child
// (and may be empty). The second list contains all of the block
// children and any inlines that are between them (and must not be
// empty, otherwise - why are we here?). The final list contains all
// of the inline children that follow the final block child.
// Find the first block child which defines list1 and list2
nsIFrame* list1 = childItems.childList;
nsIFrame* prevToFirstBlock;
nsIFrame* list2 = FindFirstBlock(aPresContext, list1, &prevToFirstBlock);
if (prevToFirstBlock) {
prevToFirstBlock->SetNextSibling(nsnull);
}
else {
list1 = nsnull;
}
// Find the last block child which defines the end of list2 and the
// start of list3
nsIFrame* afterFirstBlock = list2->GetNextSibling();
nsIFrame* list3 = nsnull;
nsIFrame* lastBlock = FindLastBlock(aPresContext, afterFirstBlock);
if (!lastBlock) {
lastBlock = list2;
}
list3 = lastBlock->GetNextSibling();
lastBlock->SetNextSibling(nsnull);
// list1's frames belong to this inline frame so go ahead and take them
aNewFrame->SetInitialChildList(aPresContext, nsnull, list1);
if (aIsPositioned) {
// XXXwaterson just for shits n' giggles, we'll give you the
// absolute and floated items, too. Is this right?
if (aState.mAbsoluteItems.childList) {
aNewFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (aState.mFloatedItems.childList) {
aNewFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floatList,
aState.mFloatedItems.childList);
}
}
// list2's frames belong to an anonymous block that we create right
// now. The anonymous block will be the parent of the block children
// of the inline.
nsIFrame* blockFrame;
nsIAtom* blockStyle;
if (aIsPositioned) {
NS_NewRelativeItemWrapperFrame(aPresShell, &blockFrame);
blockStyle = nsCSSAnonBoxes::mozAnonymousPositionedBlock;
}
else {
NS_NewBlockFrame(aPresShell, &blockFrame);
blockStyle = nsCSSAnonBoxes::mozAnonymousBlock;
}
nsRefPtr<nsStyleContext> blockSC;
blockSC = aPresContext->ResolvePseudoStyleContextFor(aContent, blockStyle,
aStyleContext);
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, blockSC, nsnull, blockFrame);
// Any inline frame could have a view (e.g., opacity)
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(blockFrame, nsnull, PR_FALSE);
if (blockFrame->HasView() || aNewFrame->HasView()) {
// Move list2's frames into the new view
nsHTMLContainerFrame::ReparentFrameViewList(aPresContext, list2,
list2->GetParent(), blockFrame);
}
blockFrame->SetInitialChildList(aPresContext, nsnull, list2);
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, blockFrame),
GetFloatContainingBlock(aPresContext, blockFrame));
MoveChildrenTo(aPresContext, blockSC, blockFrame, list2, &state);
// list3's frames belong to another inline frame
nsIFrame* inlineFrame = nsnull;
if (list3) {
if (aIsPositioned) {
NS_NewPositionedInlineFrame(aPresShell, &inlineFrame);
}
else {
NS_NewInlineFrame(aPresShell, &inlineFrame);
}
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, inlineFrame);
// Any frame might need a view
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(inlineFrame, nsnull, PR_FALSE);
if (inlineFrame->HasView() || aNewFrame->HasView()) {
// Move list3's frames into the new view
nsHTMLContainerFrame::ReparentFrameViewList(aPresContext, list3,
list3->GetParent(), inlineFrame);
}
// Reparent (cheaply) the frames in list3 - we don't have to futz
// with their style context because they already have the right one.
inlineFrame->SetInitialChildList(aPresContext, nsnull, list3);
MoveChildrenTo(aPresContext, nsnull, inlineFrame, list3, nsnull);
}
// Mark the 3 frames as special. That way if any of the
// append/insert/remove methods try to fiddle with the children, the
// containing block will be reframed instead.
SetFrameIsSpecial(aState.mFrameManager, aNewFrame, blockFrame);
SetFrameIsSpecial(aState.mFrameManager, blockFrame, inlineFrame);
MarkIBSpecialPrevSibling(aPresContext, aState.mFrameManager,
blockFrame, aNewFrame);
if (inlineFrame)
SetFrameIsSpecial(aState.mFrameManager, inlineFrame, nsnull);
#ifdef DEBUG
if (gNoisyInlineConstruction) {
nsIFrameDebug* frameDebug;
printf("nsCSSFrameConstructor::ConstructInline:\n");
if (NS_SUCCEEDED(aNewFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
printf(" ==> leading inline frame:\n");
frameDebug->List(aPresContext, stdout, 2);
}
if (NS_SUCCEEDED(blockFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
printf(" ==> block frame:\n");
frameDebug->List(aPresContext, stdout, 2);
}
if (inlineFrame && NS_SUCCEEDED(inlineFrame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
printf(" ==> trailing inline frame:\n");
frameDebug->List(aPresContext, stdout, 2);
}
}
#endif
*aNewBlockFrame = blockFrame;
*aNextInlineFrame = inlineFrame;
return rv;
}
nsresult
nsCSSFrameConstructor::ProcessInlineChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
PRBool aCanHaveGeneratedContent,
nsFrameItems& aFrameItems,
PRBool* aKidsAllInline)
{
nsresult rv = NS_OK;
nsStyleContext* styleContext = nsnull;
// save the pseudo frame state
nsPseudoFrames prevPseudoFrames;
aState.mPseudoFrames.Reset(&prevPseudoFrames);
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
styleContext = aFrame->GetStyleContext();
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSPseudoElements::before,
nsnull, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
// Iterate the child content objects and construct frames
PRBool allKidsInline = PR_TRUE;
ChildIterator iter, last;
for (ChildIterator::Init(aContent, &iter, &last);
iter != last;
++iter) {
// Construct a child frame
nsIFrame* oldLastChild = aFrameItems.lastChild;
rv = ConstructFrame(aPresShell, aPresContext, aState, nsCOMPtr<nsIContent>(*iter),
aFrame, aFrameItems);
if (NS_FAILED(rv)) {
return rv;
}
// Examine newly added children (we may have added more than one
// child if the child was another inline frame that ends up
// being carved in 3 pieces) to maintain the allKidsInline flag.
if (allKidsInline) {
nsIFrame* kid;
if (oldLastChild) {
kid = oldLastChild->GetNextSibling();
}
else {
kid = aFrameItems.childList;
}
while (kid) {
if (!IsInlineFrame(kid)) {
allKidsInline = PR_FALSE;
break;
}
kid = kid->GetNextSibling();
}
}
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSPseudoElements::after,
nsnull, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
*aKidsAllInline = allKidsInline;
// process the current pseudo frame state
if (!aState.mPseudoFrames.IsEmpty()) {
ProcessPseudoFrames(aPresContext, aState.mPseudoFrames, aFrameItems);
}
// restore the pseudo frame state
aState.mPseudoFrames = prevPseudoFrames;
return rv;
}
// Helper function that recursively removes content to frame mappings and
// undisplayed content mappings.
// This differs from DeletingFrameSubtree() because the frames have not yet been
// added to the frame hierarchy
static void
DoCleanupFrameReferences(nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIFrame* aFrameIn)
{
nsIContent* content = aFrameIn->GetContent();
nsIFrame* frame = aFrameIn;
// if the frame is a placeholder use the out of flow frame
nsCOMPtr<nsIAtom> frameType;
aFrameIn->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::placeholderFrame == frameType.get()) {
frame = ((nsPlaceholderFrame*)frame)->GetOutOfFlowFrame();
NS_ASSERTION(frame, "program error - null of of flow frame in placeholder");
}
// Remove the mapping from the content object to its frame
aFrameManager->SetPrimaryFrameFor(content, nsnull);
frame->RemovedAsPrimaryFrame(aPresContext);
aFrameManager->ClearAllUndisplayedContentIn(content);
// Recursively walk the child frames.
// Note: we only need to look at the principal child list
nsIFrame* childFrame;
frame->FirstChild(aPresContext, nsnull, &childFrame);
while (childFrame) {
DoCleanupFrameReferences(aPresContext, aFrameManager, childFrame);
// Get the next sibling child frame
childFrame = childFrame->GetNextSibling();
}
}
// Helper function that walks a frame list and calls DoCleanupFrameReference()
static void
CleanupFrameReferences(nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIFrame* aFrameList)
{
while (aFrameList) {
DoCleanupFrameReferences(aPresContext, aFrameManager, aFrameList);
// Get the sibling frame
aFrameList = aFrameList->GetNextSibling();
}
}
PRBool
nsCSSFrameConstructor::WipeContainingBlock(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aBlockContent,
nsIFrame* aFrame,
nsIFrame* aFrameList)
{
// Before we go and append the frames, check for a special
// situation: an inline frame that will now contain block
// frames. This is a no-no and the frame construction logic knows
// how to fix this.
if (!aBlockContent)
return PR_FALSE;
const nsStyleDisplay* parentDisplay = aFrame->GetStyleDisplay();
if (NS_STYLE_DISPLAY_INLINE == parentDisplay->mDisplay) {
if (!AreAllKidsInline(aFrameList)) {
// XXXwaterson temporary code until we figure out why bug 102931
// is really happening.
NS_ASSERTION(aBlockContent != nsnull, "ack, inline without a containing block");
if (! aBlockContent)
return PR_FALSE;
// Ok, reverse tracks: wipe out the frames we just created
nsCOMPtr<nsIPresShell> presShell;
nsCOMPtr<nsIFrameManager> frameManager;
aPresContext->GetShell(getter_AddRefs(presShell));
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Destroy the frames. As we do make sure any content to frame mappings
// or entries in the undisplayed content map are removed
frameManager->ClearAllUndisplayedContentIn(aFrame->GetContent());
CleanupFrameReferences(aPresContext, frameManager, aFrameList);
nsFrameList tmp(aFrameList);
tmp.DestroyFrames(aPresContext);
if (aState.mAbsoluteItems.childList) {
CleanupFrameReferences(aPresContext, frameManager, aState.mAbsoluteItems.childList);
tmp.SetFrames(aState.mAbsoluteItems.childList);
tmp.DestroyFrames(aPresContext);
}
if (aState.mFixedItems.childList) {
CleanupFrameReferences(aPresContext, frameManager, aState.mFixedItems.childList);
tmp.SetFrames(aState.mFixedItems.childList);
tmp.DestroyFrames(aPresContext);
}
if (aState.mFloatedItems.childList) {
CleanupFrameReferences(aPresContext, frameManager, aState.mFloatedItems.childList);
tmp.SetFrames(aState.mFloatedItems.childList);
tmp.DestroyFrames(aPresContext);
}
// Tell parent of the containing block to reformulate the
// entire block. This is painful and definitely not optimal
// but it will *always* get the right answer.
nsCOMPtr<nsIContent> parentContainer = aBlockContent->GetParent();
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::WipeContainingBlock: aBlockContent=%p parentContainer=%p\n",
NS_STATIC_CAST(void*, aBlockContent),
NS_STATIC_CAST(void*, parentContainer));
}
#endif
if (parentContainer) {
PRInt32 ix = parentContainer->IndexOf(aBlockContent);
ContentReplaced(aPresContext, parentContainer, aBlockContent, aBlockContent, ix);
}
else {
// XXX uh oh. the block we need to reframe has no parent!
}
return PR_TRUE;
}
}
return PR_FALSE;
}
/*
* Recursively split an inline frame until we reach a block frame.
* Below is an example of how SplitToContainingBlock() works.
*
* 1. In the initial state, you've got a block frame |B| that contains
* a bunch of inline frames eventually winding down to the <object>
* frame |o|. (Block frames are indicated with upper case letters,
* inline frames are indicated with lower case.)
*
* A-->B-->C
* |
* i-->j-->k
* |
* l-->m-->n
* |
* o
*
* 2. Now the object frame |o| gets split into the left inlines |o|,
* the block frames |O|, and the right inlines |o'|.
*
* o O o'
*
* 3. We call SplitToContainingBlock(), which will split |m| as follows.
*
* .--------.
* / \
* l-->m==>M==>m' n
* | | |
* o O o'
*
* Note that |m| gets split into |M| and |m'|, which correspond to
* the anonymous block and inline frames,
* respectively. Furthermore, note that |m| still refers to |n| as
* its next sibling, and that |m'| does not yet have a next sibling.
*
* The double-arrow line indicates that an annotation is made in
* the frame manager that indicates |M| is the ``special sibling''
* of |m|, and that |m'| is the ``special sibling'' of |M|.
*
* 4. We recurse again to split |j|. At this point, we'll break the
* link between |m| and |n|, and make |n| be the next sibling of
* |m'|.
*
* .-----------.
* / \
* i-->j=====>J==>j' k
* | | |
* l-->m=>M==>m'-->n
* | | |
* o O o'
*
* As before, |j| retains |k| as its next sibling, and |j'| is not
* yet assigned its next sibling.
*
* 5. When we hit B, the recursion terminates. We now insert |J| and
* |j'| immediately after |j|, resulting in the following frame
* model. This is done using the "normal" frame insertion
* mechanism, nsIFrame::InsertFrames(), which properly recomputes
* the line boxes.
*
* A-->B-->C
* |
* i-->j-=-=-=>J-=->j'-->k
* | | |
* l-->m==>M===>m'-->n
* | | |
* o O o'
*
* Since B is a block, it is allowed to contain both block and
* inline frames, so we can let |J| and |j'| be "real siblings" of
* |j|.
*
* Note that |J| is both the ``normal'' sibling and ``special''
* sibling of |j|, and |j'| is both the ``normal'' and ``special''
* sibling of |J|.
*/
nsresult
nsCSSFrameConstructor::SplitToContainingBlock(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aFrame,
nsIFrame* aLeftInlineChildFrame,
nsIFrame* aBlockChildFrame,
nsIFrame* aRightInlineChildFrame,
PRBool aTransfer)
{
// If aFrame is an inline frame, then recursively "split" it until
// we reach a block frame. aLeftInlineChildFrame is the original
// inline child of aFrame (or null, if there were no frames to the
// left of the new block); aBlockChildFrame and
// aRightInlineChildFrame are the newly created frames that were
// constructed as a result of the previous recursion's
// "split". aRightInlineChildFrame may be null if there are no
// inlines to the right of the new block.
//
// aBlockChildFrame and aRightInlineChildFrame will be "orphaned" frames upon
// entry to this routine; that is, they won't be parented. We'll
// assign them proper parents.
NS_PRECONDITION(aFrame != nsnull, "no frame to split");
if (! aFrame)
return NS_ERROR_NULL_POINTER;
NS_PRECONDITION(aBlockChildFrame != nsnull, "no block child");
if (! aBlockChildFrame)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (IsBlockFrame(aPresContext, aFrame)) {
// If aFrame is a block frame, then we're done: make
// aBlockChildFrame and aRightInlineChildFrame children of aFrame,
// and insert aBlockChildFrame and aRightInlineChildFrame after
// aLeftInlineChildFrame
aBlockChildFrame->SetParent(aFrame);
if (aRightInlineChildFrame)
aRightInlineChildFrame->SetParent(aFrame);
aBlockChildFrame->SetNextSibling(aRightInlineChildFrame);
aFrame->InsertFrames(aPresContext, *shell, nsnull, aLeftInlineChildFrame, aBlockChildFrame);
// If aLeftInlineChild has a view...
if (aLeftInlineChildFrame && aLeftInlineChildFrame->HasView()) {
// ...create a new view for the block child, and reparent views
// XXXbz should we be passing in a non-null aContentParentFrame?
// force creation of a view; it'll probably need one anyway since it
// has the same style context, and it's easier to think about if we can
// be sure the left inlines, the block and the right inlines all have a view
nsHTMLContainerFrame::CreateViewForFrame(aBlockChildFrame, nsnull, PR_TRUE);
nsIFrame* frame;
aBlockChildFrame->FirstChild(aPresContext, nsnull, &frame);
nsHTMLContainerFrame::ReparentFrameViewList(aPresContext, frame, aLeftInlineChildFrame, aBlockChildFrame);
if (aRightInlineChildFrame) {
// Same for the right inline children
// XXXbz should we be passing in a non-null aContentParentFrame?
nsHTMLContainerFrame::CreateViewForFrame(aRightInlineChildFrame, nsnull, PR_TRUE);
aRightInlineChildFrame->FirstChild(aPresContext, nsnull, &frame);
nsHTMLContainerFrame::ReparentFrameViewList(aPresContext, frame, aLeftInlineChildFrame, aRightInlineChildFrame);
}
}
return NS_OK;
}
// Otherwise, aFrame is inline. Split it, and recurse to find the
// containing block frame.
nsIContent* content = aFrame->GetContent();
// Create an "anonymous block" frame that will parent
// aBlockChildFrame. The new frame won't have a parent yet: the recursion
// will parent it.
nsIFrame* blockFrame;
NS_NewBlockFrame(shell, &blockFrame);
if (! blockFrame)
return NS_ERROR_OUT_OF_MEMORY;
nsStyleContext* styleContext = aFrame->GetStyleContext();
nsRefPtr<nsStyleContext> blockSC;
blockSC = aPresContext->ResolvePseudoStyleContextFor(content,
nsCSSAnonBoxes::mozAnonymousBlock,
styleContext);
InitAndRestoreFrame(aPresContext, aState, content,
nsnull, blockSC, nsnull, blockFrame);
blockFrame->SetInitialChildList(aPresContext, nsnull, aBlockChildFrame);
MoveChildrenTo(aPresContext, blockSC, blockFrame, aBlockChildFrame, nsnull);
// Create an anonymous inline frame that will parent
// aRightInlineChildFrame. The new frame won't have a parent yet:
// the recursion will parent it.
// XXXldb Why bother if |aRightInlineChildFrame| is null?
nsIFrame* inlineFrame = nsnull;
NS_NewInlineFrame(shell, &inlineFrame);
if (! inlineFrame)
return NS_ERROR_OUT_OF_MEMORY;
InitAndRestoreFrame(aPresContext, aState, content,
nsnull, styleContext, nsnull, inlineFrame);
inlineFrame->SetInitialChildList(aPresContext, nsnull, aRightInlineChildFrame);
MoveChildrenTo(aPresContext, nsnull, inlineFrame, aRightInlineChildFrame, nsnull);
// Make the "special" inline-block linkage between aFrame and the
// newly created anonymous frames. We need to create the linkage
// between the first in flow, so if we're a continuation frame, walk
// back to find it.
nsIFrame* firstInFlow = aFrame->GetFirstInFlow();
SetFrameIsSpecial(aState.mFrameManager, firstInFlow, blockFrame);
SetFrameIsSpecial(aState.mFrameManager, blockFrame, inlineFrame);
SetFrameIsSpecial(aState.mFrameManager, inlineFrame, nsnull);
MarkIBSpecialPrevSibling(aPresContext, aState.mFrameManager,
blockFrame, firstInFlow);
// If we have a continuation frame, then we need to break the
// continuation.
nsIFrame* nextInFlow;
aFrame->GetNextInFlow(&nextInFlow);
if (nextInFlow) {
aFrame->SetNextInFlow(nsnull);
nextInFlow->SetPrevInFlow(nsnull);
}
// This is where the mothership lands and we start to get a bit
// funky. We're going to do a bit of work to ensure that the frames
// from the *last* recursion are properly hooked up.
//
// aTransfer will be set once the recursion begins to nest. (It's
// not set at the first level of recursion, because
// aLeftInlineChildFrame, aBlockChildFrame, and
// aRightInlineChildFrame already have their sibling and parent
// pointers properly initialized.)
//
// Once we begin to nest recursion, aLeftInlineChildFrame
// corresponds to the original inline that we're trying to split,
// and aBlockChildFrame and aRightInlineChildFrame are the anonymous
// frames we created to protect the inline-block invariant.
if (aTransfer) {
// We'd better have the left- and right-inline children!
NS_ASSERTION(aLeftInlineChildFrame != nsnull, "no left inline child frame");
NS_ASSERTION(aRightInlineChildFrame != nsnull, "no right inline child frame");
// We need to move any successors of the original inline
// (aLeftInlineChildFrame) to aRightInlineChildFrame.
nsIFrame* nextInlineFrame = aLeftInlineChildFrame->GetNextSibling();
aLeftInlineChildFrame->SetNextSibling(nsnull);
aRightInlineChildFrame->SetNextSibling(nextInlineFrame);
// Any frame that was moved will need its parent pointer fixed,
// and will need to be marked as dirty.
while (nextInlineFrame) {
nextInlineFrame->SetParent(inlineFrame);
nextInlineFrame->AddStateBits(NS_FRAME_IS_DIRTY);
nextInlineFrame = nextInlineFrame->GetNextSibling();
}
}
// Recurse to the parent frame. This will assign a parent frame to
// each new frame we've just created.
nsIFrame* parent = aFrame->GetParent();
NS_ASSERTION(parent != nsnull, "frame has no geometric parent");
if (! parent)
return NS_ERROR_FAILURE;
// When we recur, we'll make the "left inline child frame" be the
// inline frame we've just begun to "split", and we'll pass the
// newly created anonymous frames as aBlockChildFrame and
// aRightInlineChildFrame.
return SplitToContainingBlock(aPresContext, aState, parent, aFrame, blockFrame, inlineFrame, PR_TRUE);
}
nsresult
nsCSSFrameConstructor::ReframeContainingBlock(nsIPresContext* aPresContext, nsIFrame* aFrame)
{
#ifdef DEBUG
PRBool isAttinasi = PR_FALSE;
#ifdef DEBUG_attinasi
isAttinasi = PR_TRUE;
#endif // DEBUG_attinasi
// ReframeContainingBlock is a NASTY routine, it causes terrible performance problems
// so I want to see when it is happening! Unfortunately, it is happening way to often because
// so much content on the web causes 'special' block-in-inline frame situations and we handle them
// very poorly
if (gNoisyContentUpdates || isAttinasi) {
printf("nsCSSFrameConstructor::ReframeContainingBlock frame=%p\n",
NS_STATIC_CAST(void*, aFrame));
}
#endif
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
PRBool isReflowing;
shell->IsReflowLocked(&isReflowing);
if(isReflowing) {
// don't ReframeContainingBlock, this will result in a crash
// if we remove a tree that's in reflow - see bug 121368 for testcase
NS_ASSERTION(0, "Atemptted to nsCSSFrameConstructor::ReframeContainingBlock during a Reflow!!!");
return NS_OK;
}
// Get the first "normal" ancestor of the target frame.
nsIFrame* containingBlock = GetIBContainingBlockFor(aFrame);
if (containingBlock) {
// From here we look for the containing block in case the target
// frame is already a block (which can happen when an inline frame
// wraps some of its content in an anonymous block; see
// ConstructInline)
// NOTE: We used to get the FloatContainingBlock here, but it was often wrong.
// GetIBContainingBlock works much better and provides the correct container in all cases
// so GetFloatContainingBlock(aPresContext, aFrame) has been removed
// And get the containingBlock's content
nsCOMPtr<nsIContent> blockContent = containingBlock->GetContent();
if (blockContent) {
// Now find the containingBlock's content's parent
nsCOMPtr<nsIContent> parentContainer = blockContent->GetParent();
if (parentContainer) {
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf(" ==> blockContent=%p, parentContainer=%p\n",
NS_STATIC_CAST(void*, blockContent),
NS_STATIC_CAST(void*, parentContainer));
}
#endif
PRInt32 ix = parentContainer->IndexOf(blockContent);
return ContentReplaced(aPresContext, parentContainer, blockContent, blockContent, ix);
}
}
}
// If we get here, we're screwed!
return ReconstructDocElementHierarchy(aPresContext);
}
nsresult nsCSSFrameConstructor::RemoveFixedItems(nsIPresContext* aPresContext,
nsIPresShell* aPresShell,
nsIFrameManager* aFrameManager)
{
nsresult rv=NS_OK;
if (mFixedContainingBlock) {
nsIFrame *fixedChild = nsnull;
do {
mFixedContainingBlock->FirstChild(aPresContext,
nsLayoutAtoms::fixedList,
&fixedChild);
if (fixedChild) {
DeletingFrameSubtree(aPresContext, aPresShell, aFrameManager,
fixedChild);
rv = aFrameManager->RemoveFrame(mFixedContainingBlock,
nsLayoutAtoms::fixedList,
fixedChild);
if (NS_FAILED(rv)) {
NS_WARNING("Error removing frame from fixed containing block in RemoveFixedItems");
break;
}
}
} while(fixedChild);
} else {
NS_WARNING( "RemoveFixedItems called with no FixedContainingBlock data member set");
}
return rv;
}
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