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gecko-dev/layout/base/nsCSSFrameConstructor.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include "nsCSSFrameConstructor.h"
#include "nsIArena.h"
#include "nsCRT.h"
#include "nsIAtom.h"
#include "nsIURL.h"
#include "nsISupportsArray.h"
#include "nsHashtable.h"
#include "nsIHTMLContent.h"
#include "nsIHTMLAttributes.h"
#include "nsIStyleRule.h"
#include "nsIFrame.h"
#include "nsIStyleContext.h"
#include "nsHTMLAtoms.h"
#include "nsIPresContext.h"
#include "nsILinkHandler.h"
#include "nsIDocument.h"
#include "nsIHTMLTableCellElement.h"
#include "nsTableColGroupFrame.h"
#include "nsTableColFrame.h"
#include "nsHTMLIIDs.h"
#include "nsIStyleFrameConstruction.h"
#include "nsHTMLParts.h"
#include "nsIPresShell.h"
#include "nsIStyleSet.h"
#include "nsIViewManager.h"
#include "nsStyleConsts.h"
#include "nsTableOuterFrame.h"
#include "nsIXMLDocument.h"
#include "nsIWebShell.h"
#include "nsHTMLContainerFrame.h"
#include "nsINameSpaceManager.h"
#include "nsLayoutAtoms.h"
#include "nsIDOMHTMLSelectElement.h"
#include "nsIComboboxControlFrame.h"
#include "nsIListControlFrame.h"
#include "nsIRadioControlFrame.h"
#include "nsIListControlFrame.h"
#include "nsIDOMCharacterData.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsITextContent.h"
#include "nsPlaceholderFrame.h"
#include "nsTableRowGroupFrame.h"
#include "nsStyleChangeList.h"
#include "nsIFormControl.h"
#include "nsCSSAtoms.h"
#include "nsIDeviceContext.h"
#include "nsTextFragment.h"
#include "nsISupportsArray.h"
#include "nsIAnonymousContentCreator.h"
#include "nsIFrameManager.h"
#include "nsIAttributeContent.h"
#include "nsIPref.h"
#include "nsLegendFrame.h"
#include "nsTitleFrame.h"
#include "nsIDOMWindow.h"
#include "nsPIDOMWindow.h"
#ifdef INCLUDE_XUL
#include "nsIDOMXULCommandDispatcher.h"
#include "nsIDOMXULDocument.h"
#endif
#include "nsInlineFrame.h"
#include "nsBlockFrame.h"
#include "nsGfxTextControlFrame.h"
#include "nsIScrollableFrame.h"
#include "nsIServiceManager.h"
#include "nsIXBLService.h"
#undef NOISY_FIRST_LETTER
#ifdef MOZ_MATHML
#include "nsMathMLAtoms.h"
#include "nsMathMLParts.h"
#endif
#ifdef INCLUDE_XUL
#include "nsXULAtoms.h"
#include "nsTreeFrame.h"
#include "nsTreeOuterFrame.h"
#include "nsTreeRowGroupFrame.h"
#include "nsTreeRowFrame.h"
#include "nsToolboxFrame.h"
#include "nsToolbarFrame.h"
#include "nsTreeIndentationFrame.h"
#include "nsTreeCellFrame.h"
#include "nsIDOMElement.h"
#include "nsIDOMDocument.h"
#include "nsDocument.h"
#include "nsToolbarItemFrame.h"
#include "nsXULCheckboxFrame.h"
#include "nsIScrollable.h"
#ifdef DEBUG
static PRBool gNoisyContentUpdates = PR_FALSE;
static PRBool gReallyNoisyContentUpdates = PR_FALSE;
static PRBool gNoisyInlineConstruction = PR_FALSE;
#endif
//#define NEWGFX_LIST
#define NEWGFX_LIST_SCROLLFRAME
#ifdef NEWGFX_LIST
nsresult
NS_NewGfxListControlFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
#endif
nsresult
NS_NewThumbFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollPortFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewGfxScrollFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, nsIDocument* aDocument );
nsresult
NS_NewTabFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewDeckFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewSpringFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewStackFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewProgressMeterFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitledButtonFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewXULTextFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitledBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitledBoxInnerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewTitleFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewBoxFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRBool aIsRoot);
nsresult
NS_NewSliderFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewSpinnerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewColorPickerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewFontPickerFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarButtonFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
nsresult
NS_NewScrollbarFrame ( 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_NewMenuFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRUint32 aFlags );
nsresult
NS_NewMenuBarFrame ( nsIPresShell* aPresShell, nsIFrame** aNewFrame );
#endif
//static NS_DEFINE_IID(kIStyleRuleIID, NS_ISTYLE_RULE_IID);
static NS_DEFINE_IID(kIStyleFrameConstructionIID, NS_ISTYLE_FRAME_CONSTRUCTION_IID);
static NS_DEFINE_IID(kIHTMLTableCellElementIID, NS_IHTMLTABLECELLELEMENT_IID);
static NS_DEFINE_IID(kIXMLDocumentIID, NS_IXMLDOCUMENT_IID);
static NS_DEFINE_IID(kIWebShellIID, NS_IWEB_SHELL_IID);
static NS_DEFINE_IID(kIDOMHTMLSelectElementIID, NS_IDOMHTMLSELECTELEMENT_IID);
static NS_DEFINE_IID(kIComboboxControlFrameIID, NS_ICOMBOBOXCONTROLFRAME_IID);
static NS_DEFINE_IID(kIRadioControlFrameIID, NS_IRADIOCONTROLFRAME_IID);
static NS_DEFINE_IID(kIListControlFrameIID, NS_ILISTCONTROLFRAME_IID);
static NS_DEFINE_IID(kIDOMHTMLImageElementIID, NS_IDOMHTMLIMAGEELEMENT_IID);
static NS_DEFINE_IID(kIDOMCharacterDataIID, NS_IDOMCHARACTERDATA_IID);
static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
// -----------------------------------------------------------
// 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;
}
}
// -----------------------------------------------------------
// 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)
{
nsFrameState frameState;
// Mark the frame as being moved out of the flow
aChild->GetFrameState(&frameState);
aChild->SetFrameState(frameState | NS_FRAME_OUT_OF_FLOW);
nsFrameItems::AddChild(aChild);
}
// -----------------------------------------------------------
// 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;
// Constructor
nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloaterContainingBlock,
nsILayoutHistoryState* aFrameState);
// Function to push the existing absolute containing block state and
// create a new scope
void PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock,
nsFrameConstructorSaveState& aSaveState);
// Function to push the existing floater containing block state and
// create a new scope
void PushFloaterContainingBlock(nsIFrame* aNewFloaterContainingBlock,
nsFrameConstructorSaveState& aSaveState,
PRBool aFirstLetterStyle,
PRBool aFirstLineStyle);
};
nsFrameConstructorState::nsFrameConstructorState(nsIPresContext* aPresContext,
nsIFrame* aFixedContainingBlock,
nsIFrame* aAbsoluteContainingBlock,
nsIFrame* aFloaterContainingBlock,
nsILayoutHistoryState* aFrameState)
: mFixedItems(aFixedContainingBlock),
mAbsoluteItems(aAbsoluteContainingBlock),
mFloatedItems(aFloaterContainingBlock),
mFirstLetterStyle(PR_FALSE),
mFirstLineStyle(PR_FALSE),
mFrameState(aFrameState)
{
aPresContext->GetShell(getter_AddRefs(mPresShell));
mPresShell->GetFrameManager(getter_AddRefs(mFrameManager));
}
void
nsFrameConstructorState::PushAbsoluteContainingBlock(nsIFrame* aNewAbsoluteContainingBlock,
nsFrameConstructorSaveState& aSaveState)
{
aSaveState.mItems = &mAbsoluteItems;
aSaveState.mSavedItems = mAbsoluteItems;
mAbsoluteItems = nsAbsoluteItems(aNewAbsoluteContainingBlock);
}
void
nsFrameConstructorState::PushFloaterContainingBlock(nsIFrame* aNewFloaterContainingBlock,
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(aNewFloaterContainingBlock);
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;
}
}
// -----------------------------------------------------------
// Structure used when creating table frames.
struct nsTableCreator {
virtual nsresult CreateTableOuterFrame(nsIFrame** aNewFrame);
virtual nsresult CreateTableFrame(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** aNewFrame);
virtual nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
virtual PRBool IsTreeCreator() { return PR_FALSE; };
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::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** aNewFrame) {
return NS_NewTableCellFrame(mPresShell, aNewFrame);
}
nsresult
nsTableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame) {
return NS_NewTableCellInnerFrame(mPresShell, aNewFrame);
}
#ifdef INCLUDE_XUL
// Structure used when creating tree frames
struct nsTreeCreator: public nsTableCreator {
nsresult CreateTableOuterFrame(nsIFrame** aNewFrame);
nsresult CreateTableFrame(nsIFrame** aNewFrame);
nsresult CreateTableCellFrame(nsIFrame** aNewFrame);
nsresult CreateTableRowGroupFrame(nsIFrame** aNewFrame);
nsresult CreateTableRowFrame(nsIFrame** aNewFrame);
nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
PRBool IsTreeCreator() { return PR_TRUE; };
nsTreeCreator(nsIPresShell* aPresShell)
:nsTableCreator(aPresShell) {};
};
nsresult
nsTreeCreator::CreateTableOuterFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeOuterFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableCellFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeCellFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableRowGroupFrame(nsIFrame** aNewFrame)
{
return NS_NewTreeRowGroupFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableRowFrame(nsIFrame** aNewFrame) {
return NS_NewTreeRowFrame(mPresShell, aNewFrame);
}
nsresult
nsTreeCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame) {
return NS_NewBoxFrame(mPresShell, aNewFrame);
//return NS_NewTableCellInnerFrame(mPresShell, aNewFrame);
}
#endif // INCLUDE_XUL
//MathML Mod - RBS
#ifdef MOZ_MATHML
// Structure used when creating MathML mtable frames
struct nsMathMLmtableCreator: public nsTableCreator {
nsresult CreateTableCellInnerFrame(nsIFrame** aNewFrame);
nsMathMLmtableCreator(nsIPresShell* aPresShell)
:nsTableCreator(aPresShell) {};
};
nsresult
nsMathMLmtableCreator::CreateTableCellInnerFrame(nsIFrame** aNewFrame)
{
// only works if aNewFrame is an AreaFrame (to take care of the lineLayout logic)
return NS_NewMathMLmtdFrame(mPresShell, aNewFrame);
}
#endif // MOZ_MATHML
// -----------------------------------------------------------
// return the child list that aFrame belongs on. does not ADDREF
nsIAtom* GetChildListFor(const nsIFrame* aFrame)
{
nsIAtom* childList = nsnull;
nsCOMPtr<nsIAtom> frameType;
aFrame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::tableCaptionFrame == frameType.get()) {
childList = nsLayoutAtoms::captionList;
}
return childList;
}
nsCSSFrameConstructor::nsCSSFrameConstructor(void)
: nsIStyleFrameConstruction(),
mDocument(nsnull),
mInitialContainingBlock(nsnull),
mFixedContainingBlock(nsnull),
mDocElementContainingBlock(nsnull),
mGfxScrollFrame(nsnull)
{
NS_INIT_REFCNT();
}
nsCSSFrameConstructor::~nsCSSFrameConstructor(void)
{
}
NS_IMPL_ISUPPORTS(nsCSSFrameConstructor, kIStyleFrameConstructionIID);
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!
return NS_OK;
}
// Helper function that determines the child list name that aChildFrame
// is contained in
static void
GetChildListNameFor(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIFrame* aChildFrame,
nsIAtom** aListName)
{
nsFrameState frameState;
nsIAtom* listName;
// See if the frame is moved out of the flow
aChildFrame->GetFrameState(&frameState);
if (frameState & NS_FRAME_OUT_OF_FLOW) {
// Look at the style information to tell
const nsStylePosition* position;
aChildFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
listName = nsLayoutAtoms::absoluteList;
} else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
listName = nsLayoutAtoms::fixedList;
} else {
#ifdef NS_DEBUG
const nsStyleDisplay* display;
aChildFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
NS_ASSERTION(display->IsFloating(), "not a floated frame");
#endif
listName = nsLayoutAtoms::floaterList;
}
} 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
nsCSSFrameConstructor::CreateGeneratedFrameFor(nsIPresContext* aPresContext,
nsIDocument* aDocument,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
const nsStyleContent* aStyleContent,
PRUint32 aContentIndex,
nsIFrame** aFrame)
{
*aFrame = nsnull; // initialize OUT parameter
// Get the content value
nsStyleContentType type;
nsAutoString contentString;
aStyleContent->GetContentAt(aContentIndex, type, contentString);
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (eStyleContentType_URL == type) {
nsIHTMLContent* imageContent;
// Create an HTML image content object, and set the SRC.
// XXX Check if it's an image type we can handle...
NS_NewHTMLImageElement(&imageContent, nsHTMLAtoms::img);
imageContent->SetHTMLAttribute(nsHTMLAtoms::src, contentString, PR_FALSE);
// Set aContent as the parent content and set the document object. This
// way event handling works
imageContent->SetParent(aContent);
imageContent->SetDocument(aDocument, PR_TRUE);
// Create an image frame and initialize it
nsIFrame* imageFrame;
NS_NewImageFrame(shell, &imageFrame);
imageFrame->Init(aPresContext, imageContent, aParentFrame, aStyleContext, nsnull);
NS_RELEASE(imageContent);
// Return the image frame
*aFrame = imageFrame;
} else {
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) {
nsCOMPtr<nsIContent> content;
nsIFrame* textFrame = nsnull;
NS_NewAttributeContent(getter_AddRefs(content));
if (nsnull != 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);
// 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:
{
PRUint32 quotesCount = aStyleContent->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;
}
aStyleContent->GetQuotesAt(quoteDepth, openQuote, closeQuote);
if (eStyleContentType_OpenQuote == type) {
contentString = openQuote;
} else {
contentString = closeQuote;
}
} else {
contentString = '\"';
}
}
break;
case eStyleContentType_NoOpenQuote:
case eStyleContentType_NoCloseQuote:
// XXX Adjust quote depth...
return NS_OK;
} // switch
// Create a text content node
nsIContent* textContent = nsnull;
nsIDOMCharacterData* domData;
nsIFrame* textFrame = nsnull;
NS_NewTextNode(&textContent);
if (textContent) {
// Set the text
textContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
domData->SetData(contentString);
NS_RELEASE(domData);
// Set aContent as the parent content and set the document object. This
// way event handling works
textContent->SetParent(aContent);
textContent->SetDocument(aDocument, PR_TRUE);
// Create a text frame and initialize it
NS_NewTextFrame(shell, &textFrame);
textFrame->Init(aPresContext, textContent, aParentFrame, aStyleContext, nsnull);
NS_RELEASE(textContent);
}
// Return the text frame
*aFrame = textFrame;
}
return NS_OK;
}
PRBool
nsCSSFrameConstructor::CreateGeneratedContentFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIFrame* aFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIAtom* aPseudoElement,
PRBool aForBlock,
nsIFrame** aResult)
{
*aResult = nsnull; // initialize OUT parameter
// Probe for the existence of the pseudo-element
nsCOMPtr<nsIStyleContext> pseudoStyleContext;
aPresContext->ProbePseudoStyleContextFor(aContent, aPseudoElement, aStyleContext,
PR_FALSE, getter_AddRefs(pseudoStyleContext));
if (pseudoStyleContext) {
const nsStyleDisplay* display;
// See whether the generated content should be displayed.
display = (const nsStyleDisplay*)pseudoStyleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
aState.mFrameManager->SetUndisplayedPseudoIn(pseudoStyleContext, aContent);
}
else { // has valid display type
// See if there was any content specified
const nsStyleContent* styleContent =
(const nsStyleContent*)pseudoStyleContext->GetStyleData(eStyleStruct_Content);
PRUint32 contentCount = styleContent->ContentCount();
if (contentCount > 0) {
PRUint8 displayValue = display->mDisplay;
// Make sure the 'display' property value is allowable
const nsStyleDisplay* subjectDisplay = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (subjectDisplay->IsBlockLevel()) {
// For block-level elements the only allowed 'display' values are:
// 'none', 'inline', 'block', and 'marker'
if ((NS_STYLE_DISPLAY_INLINE != displayValue) &&
(NS_STYLE_DISPLAY_BLOCK != displayValue) &&
(NS_STYLE_DISPLAY_MARKER != displayValue)) {
// Pseudo-element behaves as if the value were 'block'
displayValue = NS_STYLE_DISPLAY_BLOCK;
}
} else {
// For inline-level elements the only allowed 'display' values are
// 'none' and 'inline'
displayValue = NS_STYLE_DISPLAY_INLINE;
}
if (display->mDisplay != displayValue) {
// Reset the value
nsStyleDisplay* mutableDisplay = (nsStyleDisplay*)
pseudoStyleContext->GetMutableStyleData(eStyleStruct_Display);
mutableDisplay->mDisplay = displayValue;
}
// Also make sure the 'position' property is 'static'. :before and :after
// pseudo-elements can not be floated or positioned
const nsStylePosition * stylePosition =
(const nsStylePosition*)pseudoStyleContext->GetStyleData(eStyleStruct_Position);
if (NS_STYLE_POSITION_NORMAL != stylePosition->mPosition) {
// Reset the value
nsStylePosition* mutablePosition = (nsStylePosition*)
pseudoStyleContext->GetMutableStyleData(eStyleStruct_Position);
mutablePosition->mPosition = NS_STYLE_POSITION_NORMAL;
}
// Create a block box or an inline box depending on the value of
// the 'display' property
nsIFrame* containerFrame;
nsFrameItems childFrames;
nsCOMPtr<nsIDOMElement>containerElement;
nsCOMPtr<nsIContent> containerContent;
nsCOMPtr<nsIDocument> document;
aContent->GetDocument(*getter_AddRefs(document));
nsCOMPtr<nsIDOMDocument> domdoc(do_QueryInterface(document));
nsresult result;
result = domdoc->CreateElement("SPAN",getter_AddRefs(containerElement));//is the literal the correct way?
if (NS_SUCCEEDED(result) && containerElement)
{
containerContent = do_QueryInterface(containerElement);
}//do NOT use YET set this up for later checkin. this will be the content of the new frame.
if (NS_STYLE_DISPLAY_BLOCK == displayValue) {
NS_NewBlockFrame(aPresShell, &containerFrame);
} else {
NS_NewInlineFrame(aPresShell, &containerFrame);
}
InitAndRestoreFrame(aPresContext, aState, aContent,
aFrame, pseudoStyleContext, nsnull, containerFrame);
// Mark the frame as being associated with generated content
nsFrameState frameState;
containerFrame->GetFrameState(&frameState);
frameState |= NS_FRAME_GENERATED_CONTENT;
containerFrame->SetFrameState(frameState);
// Create another pseudo style context to use for all the generated child
// frames
nsIStyleContext* textStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::textPseudo,
pseudoStyleContext, PR_FALSE,
&textStyleContext);
// Now create content objects (and child frames) for each value of the
// 'content' property
for (PRUint32 contentIndex = 0; contentIndex < contentCount; contentIndex++) {
nsIFrame* frame;
nsresult result;
// Create a frame
result = CreateGeneratedFrameFor(aPresContext, document, containerFrame,
aContent, textStyleContext,
styleContent, contentIndex, &frame);
if (NS_SUCCEEDED(result) && frame) {
// Add it to the list of child frames
childFrames.AddChild(frame);
}
}
NS_RELEASE(textStyleContext);
if (childFrames.childList) {
containerFrame->SetInitialChildList(aPresContext, nsnull, childFrames.childList);
}
*aResult = containerFrame;
return PR_TRUE;
}
}
}
return PR_FALSE;
}
#if 0
static PRBool
IsEmptyTextContent(nsIContent* aContent)
{
PRBool result = PR_FALSE;
nsCOMPtr<nsITextContent> tc(do_QueryInterface(aContent));
if (tc) {
tc->IsOnlyWhitespace(&result);
}
return result;
}
#include "nsIDOMHTMLParagraphElement.h"
static PRBool
IsHTMLParagraph(nsIContent* aContent)
{
nsCOMPtr<nsIDOMHTMLParagraphElement> p(do_QueryInterface(aContent));
PRBool status = PR_FALSE;
if (p) {
status = PR_TRUE;
}
return status;
}
static PRBool
IsEmptyContainer(nsIContent* aContainer)
{
// Check each kid and if each kid is empty text content (or there
// are no kids) then return true.
PRInt32 i, numKids;
aContainer->ChildCount(numKids);
for (i = 0; i < numKids; i++) {
nsCOMPtr<nsIContent> kid;
aContainer->ChildAt(i, *getter_AddRefs(kid));
if (kid.get()) {
if (!IsEmptyTextContent(kid)) {
return PR_FALSE;
}
}
}
return PR_TRUE;
}
static PRBool
IsEmptyHTMLParagraph(nsIContent* aContent)
{
if (!IsHTMLParagraph(aContent)) {
// It's not an HTML paragraph so return false
return PR_FALSE;
}
return IsEmptyContainer(aContent);
}
#endif
nsresult
nsCSSFrameConstructor::CreateInputFrame(nsIPresShell *aPresShell,
nsIPresContext *aPresContext,
nsIContent *aContent,
nsIFrame *&aFrame,
nsIStyleContext *aStyleContext)
{
nsresult rv;
// Figure out which type of input frame to create
nsAutoString val;
if (NS_OK == aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::type, val)) {
if (val.EqualsIgnoreCase("submit")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("reset")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("button")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("checkbox")) {
rv = ConstructCheckboxControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("file")) {
rv = NS_NewFileControlFrame(aPresShell, &aFrame);
}
else if (val.EqualsIgnoreCase("hidden")) {
rv = ConstructButtonControlFrame(aPresShell, aPresContext, aFrame);
}
else if (val.EqualsIgnoreCase("image")) {
rv = NS_NewImageControlFrame(aPresShell, &aFrame);
}
else if (val.EqualsIgnoreCase("password")) {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
else if (val.EqualsIgnoreCase("radio")) {
rv = ConstructRadioControlFrame(aPresShell, aPresContext, aFrame, aContent, aStyleContext);
}
else if (val.EqualsIgnoreCase("text")) {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
else {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
} else {
rv = ConstructTextControlFrame(aPresShell, aPresContext, aFrame, aContent);
}
return rv;
}
/****************************************************
** BEGIN TABLE SECTION
****************************************************/
struct nsTableList {
nsTableList() {
mInner = mChild = nsnull;
}
void Set(nsIFrame* aInner, nsIFrame* aChild) {
mInner = aInner;
mChild = aChild;
}
nsIFrame* mInner;
nsIFrame* mChild;
};
// Construct the outer, inner table frames and the children frames for the table.
// Tables can have any table-related child.
nsresult
nsCSSFrameConstructor::ConstructTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
nsIFrame* childList;
nsIFrame* innerFrame;
nsIFrame* innerChildList = nsnull;
nsIFrame* captionFrame = nsnull;
// Create an anonymous table outer frame which holds the caption and table frame
aTableCreator.CreateTableOuterFrame(&aNewFrame);
// 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,
aParentFrame, aStyleContext, nsnull, aNewFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, aNewFrame,
aStyleContext, PR_FALSE);
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
#if 0
nsCOMPtr<nsIStyleContext> outerStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableOuterPseudo,
parentStyleContext,
getter_AddRefs(outerStyleContext));
aNewFrame->Init(aPresContext, aContent, aParentFrame, outerStyleContext);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, aNewFrame,
outerStyleContext, PR_FALSE);
#endif
// Create the inner table frame
aTableCreator.CreateTableFrame(&innerFrame);
childList = innerFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
aNewFrame, aStyleContext, nsnull, innerFrame);
nsIFrame* lastChildFrame = nsnull;
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) { // iterate the child content
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
nsIFrame* childFrame = nsnull;
nsIFrame* ignore1;
nsIFrame* ignore2;
nsCOMPtr<nsIStyleContext> childStyleContext;
// Resolve the style context and get its display
aPresContext->ResolveStyleContextFor(childContent, aStyleContext,
PR_FALSE,
getter_AddRefs(childStyleContext));
const nsStyleDisplay* styleDisplay = (const nsStyleDisplay*)
childStyleContext->GetStyleData(eStyleStruct_Display);
switch (styleDisplay->mDisplay) {
case NS_STYLE_DISPLAY_TABLE_CAPTION:
if (nsnull == captionFrame) { // only allow one caption
// XXX should absolute items be passed along?
rv = ConstructTableCaptionFrame(aPresShell, aPresContext, aState, childContent, aNewFrame,
childStyleContext, ignore1, captionFrame, aTableCreator);
}
break;
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP:
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
{
PRBool isRowGroup = (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP != styleDisplay->mDisplay);
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, isRowGroup, childFrame, ignore1,
aTableCreator);
break;
}
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, childFrame, ignore1, aTableCreator);
break;
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, childFrame, ignore1, aTableCreator);
break;
case NS_STYLE_DISPLAY_TABLE_CELL:
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, childContent, innerFrame,
childStyleContext, childFrame, ignore1, ignore2, aTableCreator);
break;
default:
//nsIFrame* nonTableRelatedFrame;
//nsIAtom* tag;
//childContent->GetTag(tag);
//ConstructFrameByTag(aPresContext, childContent, aNewFrame, tag, childStyleContext,
// aAbsoluteItems, nonTableRelatedFrame);
//childList->SetNextSibling(nonTableRelatedFrame);
//NS_IF_RELEASE(tag);
nsFrameItems childItems;
TableProcessChild(aPresShell, aPresContext, aState, childContent, innerFrame, parentStyleContext,
childItems, aTableCreator);
childFrame = childItems.childList; // XXX: Need to change this whole function to return a list of frames
// rather than a single frame. - DWH
break;
}
// for every table related frame except captions, link into the child list
if (nsnull != childFrame) {
if (nsnull == lastChildFrame) {
innerChildList = childFrame;
} else {
lastChildFrame->SetNextSibling(childFrame);
}
lastChildFrame = childFrame;
}
}
}
// Set the inner table frame's initial primary list
innerFrame->SetInitialChildList(aPresContext, nsnull, innerChildList);
// Set the outer table frame's primary and option lists
aNewFrame->SetInitialChildList(aPresContext, nsnull, childList);
if (captionFrame) {
aNewFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::captionList, captionFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructAnonymousTableFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIFrame*& aNewTopFrame,
nsIFrame*& aOuterFrame,
nsIFrame*& aInnerFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
//NS_WARNING("an anonymous table frame was created. \n");
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* parentDisplay =
(const nsStyleDisplay*) parentStyleContext->GetStyleData(eStyleStruct_Display);
PRBool cellIsParent = PR_TRUE;
nsIFrame* cellFrame;
nsIFrame* cellBodyFrame;
nsCOMPtr<nsIStyleContext> cellStyleContext;
nsIFrame* ignore;
// construct the ancestors of anonymous table frames
switch(parentDisplay->mDisplay) {
case NS_STYLE_DISPLAY_TABLE_CELL:
break;
case NS_STYLE_DISPLAY_TABLE_ROW: // construct a cell
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, cellStyleContext,
aNewTopFrame, cellFrame, cellBodyFrame, aTableCreator, PR_FALSE);
break;
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP: // construct a row & a cell
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP:
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP:
{
nsIFrame* rowFrame;
nsCOMPtr<nsIStyleContext> rowStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
parentStyleContext, PR_FALSE,
getter_AddRefs(rowStyleContext));
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, rowStyleContext,
aNewTopFrame, rowFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, rowFrame, cellStyleContext,
ignore, cellFrame, cellBodyFrame, aTableCreator, PR_FALSE);
rowFrame->SetInitialChildList(aPresContext, nsnull, cellFrame);
break;
}
case NS_STYLE_DISPLAY_TABLE: // construct a row group, a row, & a cell
{
nsIFrame* groupFrame;
nsCOMPtr<nsIStyleContext> groupStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowGroupPseudo,
parentStyleContext, PR_FALSE,
getter_AddRefs(groupStyleContext));
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, groupStyleContext,
PR_TRUE, aNewTopFrame, groupFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
nsIFrame* rowFrame;
nsCOMPtr<nsIStyleContext> rowStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
parentStyleContext, PR_FALSE,
getter_AddRefs(rowStyleContext));
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, rowStyleContext,
ignore, rowFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, rowFrame, cellStyleContext,
ignore, cellFrame, cellBodyFrame, aTableCreator, PR_FALSE);
rowFrame->SetInitialChildList(aPresContext, nsnull, cellFrame);
groupFrame->SetInitialChildList(aPresContext, nsnull, rowFrame);
break;
}
default:
cellIsParent = PR_FALSE;
}
// create the outer table, inner table frames and make the cell frame the parent of the
// outer frame
if (NS_SUCCEEDED(rv)) {
// create the outer table frame
nsIFrame* tableParent = nsnull;
nsIStyleContext* tableParentSC;
if (cellIsParent) {
tableParent = cellFrame;
tableParentSC = cellStyleContext;
} else {
tableParent = aParentFrame;
tableParentSC = parentStyleContext;
}
nsCOMPtr<nsIStyleContext> outerStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableOuterPseudo,
tableParentSC, PR_FALSE,
getter_AddRefs(outerStyleContext));
rv = aTableCreator.CreateTableOuterFrame(&aOuterFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
tableParent, outerStyleContext, nsnull, aOuterFrame);
// create the inner table frame
nsCOMPtr<nsIStyleContext> innerStyleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tablePseudo,
outerStyleContext, PR_FALSE,
getter_AddRefs(innerStyleContext));
rv = aTableCreator.CreateTableFrame(&aInnerFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aOuterFrame, innerStyleContext, nsnull, aInnerFrame);
//XXX when bug 2479 is fixed this may be a duplicate call
aOuterFrame->SetInitialChildList(aPresContext, nsnull, aInnerFrame);
if (cellIsParent) {
cellBodyFrame->SetInitialChildList(aPresContext, nsnull, aOuterFrame);
} else {
aNewTopFrame = aOuterFrame;
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCaptionFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewCaptionFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_NewTableCaptionFrame(aPresShell, &aNewCaptionFrame);
if (NS_FAILED(rv)) return rv;
const nsStyleDisplay* parentDisplay = GetDisplay(aParentFrame);
nsIFrame* outerFrame = aParentFrame;
if (NS_STYLE_DISPLAY_TABLE == parentDisplay->mDisplay) { // parent is an outer table
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewCaptionFrame);
// the caller is responsible for calling SetInitialChildList
aNewTopFrame = aNewCaptionFrame;
} else { // parent is not a table, need to create a new table
//NS_WARNING("a non table contains a table caption child. \n");
nsIFrame* innerFrame;
ConstructAnonymousTableFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aNewTopFrame, outerFrame, innerFrame, aTableCreator);
nsCOMPtr<nsIStyleContext> outerStyleContext;
outerFrame->GetStyleContext(getter_AddRefs(outerStyleContext));
nsCOMPtr<nsIStyleContext> adjStyleContext;
aPresContext->ResolveStyleContextFor(aContent, outerStyleContext,
PR_FALSE, getter_AddRefs(adjStyleContext));
InitAndRestoreFrame(aPresContext, aState, aContent,
outerFrame, adjStyleContext, nsnull, aNewCaptionFrame);
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewCaptionFrame);
}
// The caption frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(aNewCaptionFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process the child content
nsFrameItems childItems;
ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewCaptionFrame,
PR_TRUE, childItems, PR_TRUE);
aNewCaptionFrame->SetInitialChildList(aPresContext, nsnull,
childItems.childList);
if (aState.mFloatedItems.childList) {
aNewCaptionFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
if (outerFrame) {
outerFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::captionList,
aNewCaptionFrame);
}
return rv;
}
// if aParentFrame is a table, it is assummed that it is an inner table
nsresult
nsCSSFrameConstructor::ConstructTableGroupFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
PRBool aIsRowGroup,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewGroupFrame,
nsTableCreator& aTableCreator,
nsTableList* aToDo)
{
nsresult rv = NS_OK;
const nsStyleDisplay* styleDisplay = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
nsCOMPtr<nsIStyleContext> styleContext( dont_QueryInterface(aStyleContext) );
// TRUE if we are being called from above, FALSE if from below (e.g. row)
PRBool contentDisplayIsGroup =
(aIsRowGroup) ? (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == styleDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == styleDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == styleDisplay->mDisplay)
: (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == styleDisplay->mDisplay);
if (!contentDisplayIsGroup) {
NS_ASSERTION(aToDo, "null nsTableList when constructing from below");
if (!aToDo)
return NS_ERROR_NULL_POINTER;
}
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* parentDisplay =
(const nsStyleDisplay*) parentStyleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_TABLE == parentDisplay->mDisplay) { // parent is an inner table
if (!contentDisplayIsGroup) { // called from row below
nsIAtom* pseudoGroup = (aIsRowGroup) ? nsHTMLAtoms::tableRowGroupPseudo : nsHTMLAtoms::tableColGroupPseudo;
aPresContext->ResolvePseudoStyleContextFor(aContent, pseudoGroup, parentStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
}
// only process the group's children if we're called from above
rv = ConstructTableGroupFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, aIsRowGroup, aNewTopFrame, aNewGroupFrame,
aTableCreator, contentDisplayIsGroup);
} else if (aTableCreator.IsTreeCreator() &&
parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) {
// We're a tree view. We want to allow nested row groups.
// only process the group's children if we're called from above
rv = ConstructTableGroupFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, aIsRowGroup, aNewTopFrame, aNewGroupFrame,
aTableCreator, contentDisplayIsGroup);
} else { // construct anonymous frames
//NS_WARNING("a non table contains a table row or col group child. \n");
nsIFrame* innerFrame;
nsIFrame* outerFrame;
ConstructAnonymousTableFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aNewTopFrame,
outerFrame, innerFrame, aTableCreator);
nsCOMPtr<nsIStyleContext> innerStyleContext;
innerFrame->GetStyleContext(getter_AddRefs(innerStyleContext));
if (contentDisplayIsGroup) { // called from above
aPresContext->ResolveStyleContextFor(aContent, innerStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
} else { // called from row below
nsIAtom* pseudoGroup = (aIsRowGroup) ? nsHTMLAtoms::tableRowGroupPseudo : nsHTMLAtoms::tableColGroupPseudo;
aPresContext->ResolvePseudoStyleContextFor(aContent, pseudoGroup, innerStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
}
nsIFrame* topFrame;
// only process the group's children if we're called from above
rv = ConstructTableGroupFrameOnly(aPresShell, aPresContext, aState, aContent, innerFrame,
styleContext, aIsRowGroup, topFrame, aNewGroupFrame,
aTableCreator, contentDisplayIsGroup);
if (NS_FAILED(rv)) return rv;
if (contentDisplayIsGroup) { // called from above
innerFrame->SetInitialChildList(aPresContext, nsnull, topFrame);
// set the primary frame to avoid getting the anonymous table frame
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewGroupFrame);
} else { // called from row below
aToDo->Set(innerFrame, topFrame);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableGroupFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
PRBool aIsRowGroup,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewGroupFrame,
nsTableCreator& aTableCreator,
PRBool aProcessChildren)
{
nsresult rv = NS_OK;
const nsStyleDisplay* styleDisplay =
(const nsStyleDisplay*) aStyleContext->GetStyleData(eStyleStruct_Display);
rv = (aIsRowGroup) ? aTableCreator.CreateTableRowGroupFrame(&aNewGroupFrame)
: aTableCreator.CreateTableColGroupFrame(&aNewGroupFrame);
if (IsScrollable(aPresContext, styleDisplay)) {
// Create an area container for the frame
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, aNewGroupFrame, aParentFrame,
aNewTopFrame, aStyleContext);
} else {
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewGroupFrame);
aNewTopFrame = aNewGroupFrame;
}
if (aProcessChildren) {
nsFrameItems childItems;
if (aIsRowGroup) {
// Create some anonymous extras within the tree body.
if (aTableCreator.IsTreeCreator()) {
const nsStyleDisplay *parentDisplay;
aParentFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)parentDisplay);
if (parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) {
// We're the child of another row group. If it's lazy, we're lazy.
((nsTreeRowGroupFrame*)aNewGroupFrame)->SetFrameConstructor(this);
}
else if (parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE) {
// We're the child of a table.
// See if our parent is a tree.
// We will want to have a scrollbar.
((nsTreeRowGroupFrame*)aNewGroupFrame)->SetFrameConstructor(this);
}
}
TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewGroupFrame,
childItems, aTableCreator);
} else {
ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewGroupFrame,
PR_FALSE, childItems, PR_FALSE);
}
aNewGroupFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewRowFrame,
nsTableCreator& aTableCreator,
nsTableList* aToDo)
{
nsresult rv = NS_OK;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// TRUE if we are being called from above, FALSE if from below (e.g. cell)
PRBool contentDisplayIsRow = (NS_STYLE_DISPLAY_TABLE_ROW == display->mDisplay);
if (!contentDisplayIsRow) {
NS_ASSERTION(aToDo, "null nsTableList when constructing from below");
}
nsCOMPtr<nsIStyleContext> groupStyleContext;
nsCOMPtr<nsIStyleContext> styleContext( dont_QueryInterface(aStyleContext) );
const nsStyleDisplay* parentDisplay = GetDisplay(aParentFrame);
if ((NS_STYLE_DISPLAY_TABLE_ROW_GROUP == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == parentDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == parentDisplay->mDisplay)) {
if (!contentDisplayIsRow) { // content is from some (soon to be) child of ours
// EDV this will not work.
// 1) This crashes because the aParent is already what you think it is, event if it
// is scrollable.
// 2) If the we had gfx scrollbars turned on the first child would have been
// a scrollport!!
//aParentFrame = TableGetAsNonScrollFrame(aPresContext, aParentFrame, parentDisplay);
aParentFrame->GetStyleContext(getter_AddRefs(groupStyleContext));
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
groupStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
}
// only process the row's children if we're called from above
rv = ConstructTableRowFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, contentDisplayIsRow, aNewRowFrame,
aTableCreator);
aNewTopFrame = aNewRowFrame;
} else { // construct an anonymous row group frame
nsIFrame* groupFrame;
nsTableList localToDo;
nsTableList* toDo = (aToDo) ? aToDo : &localToDo;
// it may also need to create a table frame
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, styleContext,
PR_TRUE, aNewTopFrame, groupFrame, aTableCreator, toDo);
if (NS_FAILED(rv)) return rv;
groupFrame->GetStyleContext(getter_AddRefs(groupStyleContext));
if (contentDisplayIsRow) { // called from above
aPresContext->ResolveStyleContextFor(aContent, groupStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
} else { // called from cell below
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableRowPseudo,
groupStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
}
// only process the row's children if we're called from above
rv = ConstructTableRowFrameOnly(aPresShell, aPresContext, aState, aContent, groupFrame, styleContext,
contentDisplayIsRow, aNewRowFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
//XXX when bug 2479 is fixed this may be a duplicate call
groupFrame->SetInitialChildList(aPresContext, nsnull, aNewRowFrame);
if (contentDisplayIsRow) { // called from above
// set the primary frame to avoid getting the anonymous row group frame
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewRowFrame);
}
if (contentDisplayIsRow) { // called from above
TableProcessTableList(aPresContext, *toDo);
}
}
if (aState.mFrameManager)
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewRowFrame);
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
PRBool aProcessChildren,
nsIFrame*& aNewRowFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = aTableCreator.CreateTableRowFrame(&aNewRowFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewRowFrame);
if (aProcessChildren) {
nsFrameItems childItems;
rv = TableProcessChildren(aPresShell, aPresContext, aState, aContent, aNewRowFrame,
childItems, aTableCreator);
if (NS_FAILED(rv)) return rv;
aNewRowFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableColFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewColFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
// the content display here is always table-col and were always called from above
const nsStyleDisplay* parentDisplay = GetDisplay(aParentFrame);
if (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP == parentDisplay->mDisplay) {
rv = ConstructTableColFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, aNewColFrame, aTableCreator);
aNewTopFrame = aNewColFrame;
} else { // construct anonymous col group frame
nsTableList toDo;
nsIFrame* groupFrame;
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, PR_FALSE, aNewTopFrame, groupFrame,
aTableCreator, &toDo);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStyleContext> groupStyleContext;
groupFrame->GetStyleContext(getter_AddRefs(groupStyleContext));
nsCOMPtr<nsIStyleContext> styleContext;
aPresContext->ResolveStyleContextFor(aContent, groupStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
rv = ConstructTableColFrameOnly(aPresShell, aPresContext, aState, aContent, groupFrame,
styleContext, aNewColFrame, aTableCreator);
if (NS_FAILED(rv)) return rv;
aState.mFrameManager->SetPrimaryFrameFor(aContent, aNewColFrame);
//XXX when bug 2479 is fixed this may be a duplicate call
groupFrame->SetInitialChildList(aPresContext, nsnull, aNewColFrame);
// if an anoymous table got created, then set its initial child list
TableProcessTableList(aPresContext, toDo);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableColFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewColFrame,
nsTableCreator& aTableCreator)
{
nsresult rv = aTableCreator.CreateTableColFrame(&aNewColFrame);
if (NS_FAILED(rv)) return rv;
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewColFrame);
nsFrameItems colChildItems;
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, aNewColFrame,
PR_FALSE, colChildItems, PR_FALSE);
if (NS_FAILED(rv)) return rv;
aNewColFrame->SetInitialChildList(aPresContext, nsnull,
colChildItems.childList);
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCellFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewCellFrame,
nsIFrame*& aNewCellBodyFrame,
nsTableCreator& aTableCreator,
PRBool aProcessChildren)
{
nsresult rv = NS_OK;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// FALSE if we are being called to wrap a cell around the content
PRBool contentDisplayIsCell = (NS_STYLE_DISPLAY_TABLE_CELL == display->mDisplay);
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* parentDisplay = (const nsStyleDisplay*)
parentStyleContext->GetStyleData(eStyleStruct_Display);
nsCOMPtr<nsIStyleContext> styleContext( dont_QueryInterface(aStyleContext) );
PRBool wrapContent = PR_FALSE;
if (NS_STYLE_DISPLAY_TABLE_ROW == parentDisplay->mDisplay) {
nsCOMPtr<nsIStyleContext> styleContextRelease;
if (!contentDisplayIsCell) { // need to wrap
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo,
parentStyleContext,
PR_FALSE,
getter_AddRefs(styleContext));
wrapContent = PR_TRUE;
}
rv = ConstructTableCellFrameOnly(aPresShell, aPresContext, aState, aContent, aParentFrame,
styleContext, aNewCellFrame, aNewCellBodyFrame,
aTableCreator, aProcessChildren);
aNewTopFrame = aNewCellFrame;
} else { // the cell needs some ancestors to be fabricated
//NS_WARNING("WARNING - a non table row contains a table cell child. \n");
nsTableList toDo;
nsIFrame* rowFrame;
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, aNewTopFrame, rowFrame, aTableCreator,
&toDo);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStyleContext> rowStyleContext;
rowFrame->GetStyleContext(getter_AddRefs(rowStyleContext));
if (contentDisplayIsCell) {
aPresContext->ResolveStyleContextFor(aContent, rowStyleContext,
PR_FALSE, getter_AddRefs(styleContext));
} else {
wrapContent = PR_TRUE; // XXX
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo,
rowStyleContext, PR_FALSE,
getter_AddRefs(styleContext));
}
rv = ConstructTableCellFrameOnly(aPresShell, aPresContext, aState, aContent, rowFrame,
styleContext, aNewCellFrame, aNewCellBodyFrame,
aTableCreator, aProcessChildren);
if (NS_FAILED(rv)) return rv;
//XXX when bug 2479 is fixed this may be a duplicate call
rowFrame->SetInitialChildList(aPresContext, nsnull, aNewCellFrame);
TableProcessTableList(aPresContext, toDo);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCellFrameOnly(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewCellFrame,
nsIFrame*& aNewCellBodyFrame,
nsTableCreator& aTableCreator,
PRBool aProcessChildren)
{
nsresult rv;
// Create a table cell frame
rv = aTableCreator.CreateTableCellFrame(&aNewCellFrame);
if (NS_FAILED(rv)) return rv;
// Initialize the table cell frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewCellFrame);
// Create an area frame that will format the cell's content
rv = aTableCreator.CreateTableCellInnerFrame(&aNewCellBodyFrame);
if (NS_FAILED(rv)) {
aNewCellFrame->Destroy(aPresContext);
aNewCellFrame = nsnull;
return rv;
}
// Resolve pseudo style and initialize the body cell frame
nsCOMPtr<nsIStyleContext> bodyPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::cellContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(bodyPseudoStyle));
InitAndRestoreFrame(aPresContext, aState, aContent,
aNewCellFrame, bodyPseudoStyle, nsnull, aNewCellBodyFrame);
if (aProcessChildren) {
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
// The area frame is a floater container
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(aNewCellBodyFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process the child content
nsFrameItems childItems;
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent,
aNewCellBodyFrame, PR_TRUE, childItems, PR_TRUE);
if (NS_FAILED(rv)) return rv;
// if there are any anonymous children create frames for them
nsCOMPtr<nsIAtom> tagName;
aContent->GetTag(*getter_AddRefs(tagName));
if (tagName && tagName.get() == nsXULAtoms::treecell) {
CreateAnonymousTreeCellFrames(aPresShell, aPresContext, tagName, aState, aContent, aNewCellBodyFrame,
aNewCellFrame, childItems);
}
aNewCellBodyFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mFloatedItems.childList) {
aNewCellBodyFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
aNewCellFrame->SetInitialChildList(aPresContext, nsnull, aNewCellBodyFrame);
return rv;
}
// This is only called by table row groups and rows. It allows children that are not
// table related to have a cell wrapped around them.
nsresult
nsCSSFrameConstructor::TableProcessChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsFrameItems& aChildItems,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
// Iterate the child content objects and construct a frame
PRInt32 count;
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
const nsStyleDisplay* display = (const nsStyleDisplay*)
parentStyleContext->GetStyleData(eStyleStruct_Display);
if (aTableCreator.IsTreeCreator() &&
(display->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP)) {
// Stop the processing if we're lazy. The tree row group frame builds its children
// as needed.
return NS_OK;
}
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
aContent->ChildAt(i, *getter_AddRefs(childContent));
rv = TableProcessChild(aPresShell, aPresContext, aState, childContent, aParentFrame, parentStyleContext,
aChildItems, aTableCreator);
}
return rv;
}
nsresult
nsCSSFrameConstructor::TableProcessChild(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aChildContent,
nsIFrame* aParentFrame,
nsIStyleContext* aParentStyleContext,
nsFrameItems& aChildItems,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_OK;
if (nsnull != aChildContent) {
nsCOMPtr<nsIStyleContext> childStyleContext;
aPresContext->ResolveStyleContextFor(aChildContent, aParentStyleContext,
PR_FALSE,
getter_AddRefs(childStyleContext));
const nsStyleDisplay* childDisplay = (const nsStyleDisplay*)
childStyleContext->GetStyleData(eStyleStruct_Display);
if (IsTableRelated(childDisplay->mDisplay)) {
rv = ConstructFrame(aPresShell, aPresContext, aState, aChildContent, aParentFrame, aChildItems);
} else {
nsCOMPtr<nsIAtom> tag;
aChildContent->GetTag(*getter_AddRefs(tag));
// XXX this needs to be fixed so that the form can work without
// a frame. This is *disgusting*
// forms, form controls need a frame but it can't be a child of an inner table
nsIFormControl* formControl = nsnull;
nsresult fcResult = aChildContent->QueryInterface(kIFormControlIID, (void**)&formControl);
NS_IF_RELEASE(formControl);
if ((nsHTMLAtoms::form == tag.get()) || NS_SUCCEEDED(fcResult)) {
// if the parent is a table, put the form in the outer table frame
const nsStyleDisplay* parentDisplay = (const nsStyleDisplay*)
aParentStyleContext->GetStyleData(eStyleStruct_Display);
if (parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE) {
nsIFrame* outerFrame;
aParentFrame->GetParent(&outerFrame);
rv = ConstructFrame(aPresShell, aPresContext, aState, aChildContent, outerFrame, aChildItems);
// XXX: Seems like this is going into the inner frame's child list instead of the outer frame. - DWH
} else {
rv = ConstructFrame(aPresShell, aPresContext, aState, aChildContent, aParentFrame, aChildItems);
}
// wrap it in a table cell, row, row group, table if it is a valid tag or display
// and not whitespace. For example we don't allow map, head, body, etc.
} else {
if (TableIsValidCellContent(aPresContext, aParentFrame, aChildContent)) {
PRBool needCell = PR_TRUE;
nsIDOMCharacterData* domData = nsnull;
nsresult rv2 = aChildContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
if ((NS_OK == rv2) && (nsnull != domData)) {
nsString charData;
domData->GetData(charData);
charData = charData.StripWhitespace();
if ((charData.Length() <= 0) && (charData != " ")) { // XXX check this
needCell = PR_FALSE; // only contains whitespace, don't create cell
}
NS_RELEASE(domData);
}
if (needCell) {
nsIFrame* cellBodyFrame;
nsIFrame* cellFrame;
nsIFrame* childFrame; // XXX: Need to change the ConstructTableCell function to return lists of frames. - DWH
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aChildContent, aParentFrame, childStyleContext,
childFrame, cellFrame, cellBodyFrame, aTableCreator);
aChildItems.AddChild(childFrame);
}
}
}
}
}
return rv;
}
PRBool
nsCSSFrameConstructor::TableIsValidCellContent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aContent)
{
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(*getter_AddRefs(tag));
nsCOMPtr<nsIStyleContext> styleContext;
nsresult rv = ResolveStyleContext(aPresContext, aParentFrame, aContent, tag, getter_AddRefs(styleContext));
if (NS_FAILED(rv)) {
return PR_FALSE;
}
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE != display->mDisplay) {
return PR_FALSE;
}
// check tags first
if ( (nsHTMLAtoms::img == tag.get()) ||
(nsHTMLAtoms::hr == tag.get()) ||
(nsHTMLAtoms::br == tag.get()) ||
(nsHTMLAtoms::wbr == tag.get()) ||
(nsHTMLAtoms::input == tag.get()) ||
(nsHTMLAtoms::textarea == tag.get()) ||
(nsHTMLAtoms::select == tag.get()) ||
(nsHTMLAtoms::applet == tag.get()) ||
(nsHTMLAtoms::embed == tag.get()) ||
(nsHTMLAtoms::fieldset == tag.get()) ||
(nsHTMLAtoms::legend == tag.get()) ||
(nsHTMLAtoms::object == tag.get()) ||
(nsHTMLAtoms::form == tag.get()) ||
(nsHTMLAtoms::iframe == tag.get()) ||
(nsHTMLAtoms::spacer == tag.get()) ||
(nsHTMLAtoms::button == tag.get()) ||
(nsHTMLAtoms::label == tag.get() )) {
return PR_TRUE;
}
#ifdef INCLUDE_XUL
if ( (nsXULAtoms::button == tag.get()) ||
(nsXULAtoms::titledbutton == tag.get()) ||
(nsXULAtoms::image == tag.get()) ||
(nsXULAtoms::grippy == tag.get()) ||
(nsXULAtoms::splitter == tag.get()) ||
(nsXULAtoms::slider == tag.get()) ||
(nsXULAtoms::spinner == tag.get()) ||
(nsXULAtoms::scrollbar == tag.get()) ||
(nsXULAtoms::scrollbarbutton == tag.get()) ||
(nsXULAtoms::thumb == tag.get()) ||
(nsXULAtoms::colorpicker == tag.get()) ||
(nsXULAtoms::fontpicker == tag.get()) ||
(nsXULAtoms::text == tag.get()) ||
(nsXULAtoms::widget == tag.get()) ||
(nsXULAtoms::tree == tag.get()) ||
(nsXULAtoms::treechildren == tag.get()) ||
(nsXULAtoms::treeitem == tag.get()) ||
(nsXULAtoms::treerow == tag.get()) ||
(nsXULAtoms::treecell == tag.get()) ||
(nsXULAtoms::treeindentation == tag.get()) ||
(nsXULAtoms::treecol == tag.get()) ||
(nsXULAtoms::treecolgroup == tag.get()) ||
(nsXULAtoms::treefoot == tag.get()) ||
(nsXULAtoms::menu == tag.get()) ||
(nsXULAtoms::menuitem == tag.get()) ||
(nsXULAtoms::menubar == tag.get()) ||
(nsXULAtoms::menupopup == tag.get()) ||
(nsXULAtoms::popupset == tag.get()) ||
(nsXULAtoms::popup == tag.get()) ||
(nsXULAtoms::toolbox == tag.get()) ||
(nsXULAtoms::toolbar == tag.get()) ||
(nsXULAtoms::toolbaritem == tag.get()) ||
(nsXULAtoms::stack == tag.get()) ||
(nsXULAtoms::deck == tag.get()) ||
(nsXULAtoms::spring == tag.get()) ||
(nsXULAtoms::title == tag.get()) ||
(nsXULAtoms::titledbox == tag.get()) ||
(nsXULAtoms::tabcontrol == tag.get()) ||
(nsXULAtoms::tabbox == tag.get()) ||
(nsXULAtoms::tabpanel == tag.get()) ||
(nsXULAtoms::tabpage == tag.get()) ||
(nsXULAtoms::progressmeter == tag.get()) ||
(nsXULAtoms::checkbox == tag.get()) ||
(nsXULAtoms::radio == tag.get()) ||
(nsXULAtoms::menulist == tag.get()) ||
(nsXULAtoms::menubutton == tag.get()) ||
(nsXULAtoms::textfield == tag.get()) ||
(nsXULAtoms::textarea == tag.get()) ||
(nsXULAtoms::listbox == tag.get()) ||
(nsXULAtoms::listcaption == tag.get()) ||
(nsXULAtoms::listhead == tag.get()) ||
(nsXULAtoms::listrow == tag.get()) ||
(nsXULAtoms::listcell == tag.get()) ||
(nsXULAtoms::listitem == tag.get()) ||
(nsXULAtoms::listchildren == tag.get()) ||
(nsXULAtoms::listindentation == tag.get()) ||
(nsXULAtoms::listcol == tag.get()) ||
(nsXULAtoms::listcolgroup == tag.get()) ||
(nsXULAtoms::listfoot == tag.get())
) {
return PR_TRUE;
}
#endif
//MathML Mod - DJF
#ifdef MOZ_MATHML
if ( (nsMathMLAtoms::math == tag.get()) ) {
return PR_TRUE;
}
#endif
// we should check for display type as well - later
return PR_FALSE;
}
nsresult
nsCSSFrameConstructor::TableProcessTableList(nsIPresContext* aPresContext,
nsTableList& aTableList)
{
nsresult rv = NS_OK;
nsIFrame* inner = (nsIFrame*)aTableList.mInner;
if (inner) {
nsIFrame* child = (nsIFrame*)aTableList.mChild;
rv = inner->SetInitialChildList(aPresContext, nsnull, child);
}
return rv;
}
nsIFrame*
nsCSSFrameConstructor::TableGetAsNonScrollFrame(nsIPresContext* aPresContext,
nsIFrame* aFrame,
const nsStyleDisplay* aDisplay)
{
if (nsnull == aFrame) {
return nsnull;
}
nsIFrame* result = aFrame;
if (IsScrollable(aPresContext, aDisplay)) {
aFrame->FirstChild(aPresContext, nsnull, &result);
}
return result;
}
// nsIAtom* pseudoTag;
// styleContext->GetPseudoType(pseudoTag);
// if (pseudoTag != nsLayoutAtoms::scrolledContentPseudo) {
// NS_IF_RELEASE(pseudoTag);
const nsStyleDisplay*
nsCSSFrameConstructor:: GetDisplay(nsIFrame* aFrame)
{
if (nsnull == aFrame) {
return nsnull;
}
nsCOMPtr<nsIStyleContext> styleContext;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
const nsStyleDisplay* display =
(const nsStyleDisplay*)styleContext->GetStyleData(eStyleStruct_Display);
return display;
}
PRBool
nsCSSFrameConstructor::IsTableRelated(PRUint8 aDisplay)
{
return (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) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN) ||
(aDisplay == NS_STYLE_DISPLAY_TABLE_CELL);
}
/***********************************************
* 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;
return NS_OK;
}
/**
* New one
*/
nsresult
nsCSSFrameConstructor::ConstructDocElementFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aDocElement,
nsIFrame* aParentFrame,
nsIStyleContext* aParentStyleContext,
nsIFrame*& aNewFrame)
{
// how the root frame hierarchy should look
/*
---------------No Scrollbars------
AreaFrame or BoxFrame (InitialContainingBlock)
---------------Native Scrollbars------
ScrollFrame
^
|
AreaFrame or BoxFrame (InitialContainingBlock)
---------------Gfx Scrollbars ------
GfxScrollFrame
^
|
ScrollPort
^
|
AreaFrame or BoxFrame (InitialContainingBlock)
*/
if (!mTempFrameTreeState)
aPresShell->GetHistoryState(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;
nsresult rv = scrollPort->GetNextSibling(&gfxScrollbarFrame1);
rv = gfxScrollbarFrame1->GetNextSibling(&gfxScrollbarFrame2);
nsCOMPtr<nsIContent> content;
gfxScrollbarFrame1->GetContent(getter_AddRefs(content));
aState.mFrameManager->SetPrimaryFrameFor(content, gfxScrollbarFrame1);
gfxScrollbarFrame2->GetContent(getter_AddRefs(content));
aState.mFrameManager->SetPrimaryFrameFor(content, gfxScrollbarFrame2);
}
// --------- CREATE AREA OR BOX FRAME -------
nsCOMPtr<nsIStyleContext> styleContext;
aPresContext->ResolveStyleContextFor(aDocElement, aParentStyleContext,
PR_FALSE,
getter_AddRefs(styleContext));
const nsStyleDisplay* display =
(const nsStyleDisplay*)styleContext->GetStyleData(eStyleStruct_Display);
PRBool docElemIsTable = IsTableRelated(display->mDisplay);
// --------- IF SCROLLABLE WRAP IN SCROLLFRAME --------
PRBool isScrollable = IsScrollable(aPresContext, display);
PRBool isPaginated = PR_FALSE;
aPresContext->IsPaginated(&isPaginated);
nsIFrame* scrollFrame = nsnull;
// build a scrollframe
if (!isPaginated && isScrollable) {
nsIFrame* newScrollFrame = nsnull;
nsCOMPtr<nsIDocument> document;
aDocElement->GetDocument(*getter_AddRefs(document));
nsCOMPtr<nsIStyleContext> newContext;
BeginBuildingScrollFrame( aPresShell, aPresContext,
aState,
aDocElement,
styleContext,
aParentFrame,
nsLayoutAtoms::scrolledContentPseudo,
document,
scrollFrame,
newContext,
newScrollFrame);
styleContext = newContext;
aParentFrame = newScrollFrame;
}
nsIFrame* contentFrame = nsnull;
PRBool isBlockFrame = PR_FALSE;
if (docElemIsTable) {
// if the document is a table then just populate it.
ConstructDocElementTableFrame(aPresShell, aPresContext, aDocElement,
aParentFrame, contentFrame,
aState.mFrameState);
contentFrame->GetStyleContext(getter_AddRefs(styleContext));
} else {
// otherwise build a box or a block
PRInt32 nameSpaceID;
if (NS_SUCCEEDED(aDocElement->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
NS_NewBoxFrame(aPresShell, &contentFrame, PR_TRUE);
}
else {
NS_NewDocumentElementFrame(aPresShell, &contentFrame);
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 floaterSaveState;
nsFrameItems childItems;
// XXX these next lines are wrong for BoxFrame
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aDocElement, styleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
aState.PushAbsoluteContainingBlock(contentFrame, absoluteSaveState);
aState.PushFloaterContainingBlock(contentFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
ProcessChildren(aPresShell, aPresContext, aState, aDocElement, contentFrame,
PR_TRUE, childItems, isBlockFrame);
// See if the document element has a fixed background attachment.
// Note: the reason we wait until after processing the document element's
// children is because of special treatment of the background for the HTML
// element. See BodyFixupRule::MapStyleInto() for details
const nsStyleColor* color;
color = (const nsStyleColor*)styleContext->GetStyleData(eStyleStruct_Color);
if (NS_STYLE_BG_ATTACHMENT_FIXED == color->mBackgroundAttachment) {
// Fixed background attachments are handled by setting the
// NS_VIEW_PUBLIC_FLAG_DONT_BITBLT flag bit on the view.
//
// If the document element's frame is scrollable, then set the bit on its
// view; otherwise, set it on the root frame's view. This avoids
// unnecessarily creating another view and should be faster
nsIView* view;
if (IsScrollable(aPresContext, display)) {
contentFrame->GetView(aPresContext, &view);
} else {
nsIFrame* parentFrame;
contentFrame->GetParent(&parentFrame);
parentFrame->GetView(aPresContext, &view);
}
NS_ASSERTION(view, "expected a view");
PRUint32 viewFlags;
view->GetViewFlags(&viewFlags);
view->SetViewFlags(viewFlags | NS_VIEW_PUBLIC_FLAG_DONT_BITBLT);
}
// 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::floaterList,
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)
---------------Native Scrollbars------
ViewPortFrame (FixedContainingBlock) <---- RootView
^
|
ScrollFrame <--- RootScrollableView
^
|
RootFrame(DocElementContainingBlock)
---------------Gfx Scrollbars ------
ViewPortFrame (FixedContainingBlock) <---- RootView
^
|
GfxScrollFrame
^
|
ScrollPort <--- RootScrollableView
^
|
RootFrame(DocElementContainingBlock)
*/
// --------- BUILD VIEWPORT -----------
nsIFrame* viewportFrame = nsnull;
nsCOMPtr<nsIStyleContext> viewportPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(nsnull, nsLayoutAtoms::viewportPseudo,
nsnull, PR_FALSE,
getter_AddRefs(viewportPseudoStyle));
{ // ensure that the viewport thinks it is a block frame, layout goes pootsy if it doesn't
nsStyleDisplay* display = (nsStyleDisplay*)viewportPseudoStyle->GetMutableStyleData(eStyleStruct_Display);
display->mDisplay = NS_STYLE_DISPLAY_BLOCK;
}
NS_NewViewportFrame(aPresShell, &viewportFrame);
viewportFrame->Init(aPresContext, nsnull, nsnull, viewportPseudoStyle, nsnull);
// Bind the viewport frame to the root view
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
nsCOMPtr<nsIViewManager> viewManager;
presShell->GetViewManager(getter_AddRefs(viewManager));
nsIView* rootView;
viewManager->GetRootView(rootView);
viewportFrame->SetView(aPresContext, 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
// - makes sure that the document element's frame covers the entire canvas
PRBool isPaginated = PR_FALSE;
aPresContext->IsPaginated(&isPaginated);
nsIFrame* rootFrame = nsnull;
nsIAtom* rootPseudo;
if (!isPaginated) {
NS_NewRootFrame(aPresShell, &rootFrame);
rootPseudo = nsLayoutAtoms::canvasPseudo;
mDocElementContainingBlock = rootFrame;
} else {
// Create a page sequence frame
NS_NewSimplePageSequenceFrame(aPresShell, &rootFrame);
rootPseudo = nsLayoutAtoms::pageSequencePseudo;
}
// --------- 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?
// XXX It would be nice to have a better way to query for whether the device
// is scrollable
PRBool isScrollable = PR_TRUE;
if (aPresContext) {
nsIDeviceContext* dc;
aPresContext->GetDeviceContext(&dc);
if (dc) {
PRBool supportsWidgets;
if (NS_SUCCEEDED(dc->SupportsNativeWidgets(supportsWidgets))) {
isScrollable = supportsWidgets;
}
NS_RELEASE(dc);
}
}
// 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.
PRInt32 nameSpaceID; // Never create scrollbars for XUL documents
if (NS_SUCCEEDED(aDocElement->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
isScrollable = PR_FALSE;
} else {
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
}
}
}
}
nsIFrame* newFrame = rootFrame;
nsCOMPtr<nsIStyleContext> 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,
nsnull);
nsIFrame* parentFrame = viewportFrame;
if (isScrollable) {
// built 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
nsCOMPtr<nsIStyleContext> styleContext;
aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsLayoutAtoms::viewportScrollPseudo,
viewportPseudoStyle, PR_FALSE,
getter_AddRefs(styleContext));
nsIFrame* newScrollableFrame = nsnull;
nsCOMPtr<nsIDocument> document;
aDocElement->GetDocument(*getter_AddRefs(document));
BeginBuildingScrollFrame( aPresShell,
aPresContext,
state,
nsnull,
styleContext,
viewportFrame,
rootPseudo,
document,
newFrame,
rootPseudoStyle,
newScrollableFrame);
// Inform the view manager about the root scrollable view
// get the scrolling view
nsIView* view = nsnull;
newScrollableFrame->GetView(aPresContext, &view);
nsIScrollableView* scrollableView;
view->QueryInterface(kScrollViewIID, (void**)&scrollableView);
viewManager->SetRootScrollableView(scrollableView);
parentFrame = newScrollableFrame;
// if gfx scrollbars store them
if (HasGfxScrollbars(aPresContext)) {
mGfxScrollFrame = newFrame;
} else {
mGfxScrollFrame = nsnull;
}
} else {
aPresContext->ResolvePseudoStyleContextFor(nsnull, rootPseudo,
viewportPseudoStyle,
PR_FALSE,
getter_AddRefs(rootPseudoStyle));
}
rootFrame->Init(aPresContext, nsnull, parentFrame, rootPseudoStyle, nsnull);
if (isScrollable) {
FinishBuildingScrollFrame(aPresContext,
state,
aDocElement,
parentFrame,
rootFrame,
rootPseudoStyle);
// set the primary frame to the root frame
state.mFrameManager->SetPrimaryFrameFor(aDocElement, rootFrame);
}
if (isPaginated) {
// Create the first page
nsIFrame* pageFrame;
NS_NewPageFrame(aPresShell, &pageFrame);
// The page is the containing block for 'fixed' elements. which are repeated
// on every page
mFixedContainingBlock = pageFrame;
// Initialize the page and force it to have a view. This makes printing of
// the pages easier and faster.
nsCOMPtr<nsIStyleContext> pagePseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(nsnull, nsLayoutAtoms::pagePseudo,
rootPseudoStyle, PR_FALSE,
getter_AddRefs(pagePseudoStyle));
pageFrame->Init(aPresContext, nsnull, rootFrame, pagePseudoStyle,
nsnull);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, pageFrame,
pagePseudoStyle, PR_TRUE);
// The eventual parent of the document element frame
mDocElementContainingBlock = pageFrame;
// Set the initial child lists
rootFrame->SetInitialChildList(aPresContext, nsnull, pageFrame);
}
viewportFrame->SetInitialChildList(aPresContext, nsnull, newFrame);
aNewFrame = viewportFrame;
return NS_OK;
}
nsresult
nsCSSFrameConstructor::CreatePlaceholderFrameFor(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrameManager* aFrameManager,
nsIContent* aContent,
nsIFrame* aFrame,
nsIStyleContext* 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
nsCOMPtr<nsIStyleContext> placeholderPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::placeholderPseudo,
aStyleContext,
PR_FALSE,
getter_AddRefs(placeholderPseudoStyle));
placeholderFrame->Init(aPresContext, aContent, aParentFrame,
placeholderPseudoStyle, nsnull);
// Add mapping from absolutely positioned frame to its placeholder frame
aFrameManager->SetPlaceholderFrameFor(aFrame, placeholderFrame);
// The placeholder frame has a pointer back to the out-of-flow frame
placeholderFrame->SetOutOfFlowFrame(aFrame);
*aPlaceholderFrame = NS_STATIC_CAST(nsIFrame*, placeholderFrame);
}
return rv;
}
nsWidgetRendering
nsCSSFrameConstructor::GetFormElementRenderingMode(nsIPresContext* aPresContext,
nsWidgetType aWidgetType)
{
if (!aPresContext) { return eWidgetRendering_Gfx;}
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
switch (mode)
{
case eWidgetRendering_Gfx:
return eWidgetRendering_Gfx;
case eWidgetRendering_PartialGfx:
switch (aWidgetType)
{
case eWidgetType_Button:
case eWidgetType_Checkbox:
case eWidgetType_Radio:
case eWidgetType_Text:
return eWidgetRendering_Gfx;
default:
return eWidgetRendering_Native;
}
case eWidgetRendering_Native:
PRBool useNativeWidgets = PR_FALSE;
nsIDeviceContext* dc;
aPresContext->GetDeviceContext(&dc);
if (dc) {
PRBool supportsWidgets;
if (NS_SUCCEEDED(dc->SupportsNativeWidgets(supportsWidgets))) {
useNativeWidgets = supportsWidgets;
}
NS_RELEASE(dc);
}
if (useNativeWidgets)
return eWidgetRendering_Native;
else
return eWidgetRendering_Gfx;
}
return eWidgetRendering_Gfx;
}
nsresult
nsCSSFrameConstructor::ConstructRadioControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsresult rv = NS_OK;
if (GetFormElementRenderingMode(aPresContext, eWidgetType_Radio) == eWidgetRendering_Gfx)
rv = NS_NewGfxRadioControlFrame(aPresShell, &aNewFrame);
else
NS_ASSERTION(0, "We longer support native widgets");
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
return rv;
}
nsCOMPtr<nsIStyleContext> radioStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::radioPseudo,
aStyleContext, PR_FALSE, getter_AddRefs(radioStyle));
nsIRadioControlFrame* radio = nsnull;
if (aNewFrame != nsnull && NS_SUCCEEDED(aNewFrame->QueryInterface(kIRadioControlFrameIID, (void**)&radio))) {
radio->SetRadioButtonFaceStyleContext(radioStyle);
NS_RELEASE(radio);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructCheckboxControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame)
{
nsresult rv = NS_OK;
if (GetFormElementRenderingMode(aPresContext, eWidgetType_Checkbox) == eWidgetRendering_Gfx)
rv = NS_NewGfxCheckboxControlFrame(aPresShell, &aNewFrame);
else
NS_ASSERTION(0, "We longer support native widgets");
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructButtonControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame)
{
nsresult rv = NS_OK;
if (GetFormElementRenderingMode(aPresContext, eWidgetType_Button) == eWidgetRendering_Gfx)
rv = NS_NewGfxButtonControlFrame(aPresShell, &aNewFrame);
else
NS_ASSERTION(0, "We longer support native widgets");
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTextControlFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame*& aNewFrame,
nsIContent* aContent)
{
if (!aPresContext) { return NS_ERROR_NULL_POINTER;}
nsresult rv = NS_OK;
//Do we want an Autocomplete input text widget?
nsString val1;
nsString val2;
if ((NS_OK == aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::autocompletetimeout, val1)) ||
(NS_OK == aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::autocompletetype, val2))) {
if (! val1.IsEmpty() || ! val2.IsEmpty()) {
//ducarroz: How can I check if I am in a xul document?
rv = NS_NewGfxAutoTextControlFrame(aPresShell, &aNewFrame);
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
else
return rv;
}
}
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
if (eWidgetRendering_Gfx == mode)
{
rv = NS_NewGfxTextControlFrame(aPresShell, &aNewFrame);
if (NS_FAILED(rv)) {
aNewFrame = nsnull;
}
if (aNewFrame)
((nsGfxTextControlFrame*)aNewFrame)->SetFrameConstructor(this);
}
if (!aNewFrame)
{
NS_ASSERTION(0, "We longer support native widgets");
}
return rv;
}
PRBool
nsCSSFrameConstructor::HasGfxScrollbars(nsIPresContext* aPresContext)
{
nsCOMPtr<nsIPref> pref;
aPresContext->GetPrefs(getter_AddRefs(pref));
PRBool gfx = PR_FALSE;
if (pref) {
pref->GetBoolPref("nglayout.widget.gfxscrollbars", &gfx);
}
return gfx;
/*
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
return (eWidgetRendering_Native != mode);
*/
}
nsresult
nsCSSFrameConstructor::ConstructSelectFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
PRBool& aProcessChildren,
PRBool aIsAbsolutelyPositioned,
PRBool& aFrameHasBeenInitialized,
PRBool aIsFixedPositioned,
nsFrameItems& aFrameItems)
{
nsresult rv = NS_OK;
nsWidgetRendering mode;
aPresContext->GetWidgetRenderingMode(&mode);
const PRInt32 kNoSizeSpecified = -1;
if (eWidgetRendering_Gfx == mode) {
// 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) || (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?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;
}
// Initialize the combobox frame
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, comboboxFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, comboboxFrame,
aStyleContext, PR_FALSE);
nsIComboboxControlFrame* comboBox = nsnull;
if (NS_SUCCEEDED(comboboxFrame->QueryInterface(kIComboboxControlFrameIID, (void**)&comboBox))) {
// XXX added for Rods code. -EDV
//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;
if (NS_SUCCEEDED(listFrame->QueryInterface(kIListControlFrameIID, (void**)&listControlFrame))) {
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
nsCOMPtr<nsIStyleContext> listStyle;
rv = aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::dropDownListPseudo,
aStyleContext,
PR_FALSE,
getter_AddRefs(listStyle));
// 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);
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(aPresContext, &lstView);
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.
nsIView *listView;
listFrame->GetView(aPresContext, &listView);
NS_ASSERTION(nsnull != listView,"ListFrame's view is nsnull");
//listView->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN);
nsIFrame* frame = nsnull;
if (NS_SUCCEEDED(comboboxFrame->QueryInterface(kIFrameIID, (void**)&frame))) {
nsFrameItems childItems;
// Create display and button frames from the combobox'es anonymous content
CreateAnonymousFrames(aPresShell, aPresContext, nsHTMLAtoms::combobox, aState, aContent, frame,
childItems);
frame->SetInitialChildList(aPresContext, nsnull,
childItems.childList);
// Initialize the additional popup child list which contains the dropdown list frame.
nsFrameItems popupItems;
popupItems.AddChild(listFrame);
frame->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;
}
} else {
#ifdef NEWGFX_LIST
// Construct a frame-based list box
nsIFrame * listFrame;
rv = NS_NewGfxListControlFrame(aPresShell, &listFrame);
// initialize the list control
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, listFrame);
// create the area frame we are scrolling
PRUint32 flags = NS_BLOCK_SHRINK_WRAP | (aIsAbsolutelyPositioned?NS_BLOCK_SPACE_MGR:0);
nsIFrame* scrolledFrame = nsnull;
NS_NewSelectsAreaFrame(aPresShell, &scrolledFrame, flags);
// resolve a style for our gfx scrollframe based on the list frames style
nsCOMPtr<nsIStyleContext> scrollFrameStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsLayoutAtoms::selectScrolledContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(scrollFrameStyle));
InitAndRestoreFrame(aPresContext, aState, aContent,
listFrame, scrollFrameStyle, nsnull, scrolledFrame);
// this is what is returned when the scrollframe is created.
// newScrollFrame - Either a gfx scrollframe or a native scrollframe that was created
// scrolledFrameStyleContext - The resolved style context of the scrolledframe you passed in.
// this is not the style of the scrollFrame.
nsIFrame* newScrollFrame = nsnull;
/* scroll frame */
#ifdef NEWGFX_LIST_SCROLLFRAME
nsIStyleContext * scrolledFrameStyleContext = nsnull;
// ok take the style context, the Select area frame to scroll,the listFrame, and its parent
// and build the scrollframe.
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, scrollFrameStyle, scrolledFrame,
listFrame, newScrollFrame, scrolledFrameStyleContext);
#else
newScrollFrame = scrolledFrame;
#endif
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(scrolledFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameItems childItems;
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) {
PRUint32 numOptions = 0;
result = selectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(result) && 0 == numOptions) {
nsCOMPtr<nsIStyleContext> styleContext;
nsIFrame* generatedFrame = nsnull;
scrolledFrame->GetStyleContext(&styleContext);
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, scrolledFrame, aContent,
styleContext, nsLayoutAtoms::dummyOptionPseudo,
PR_FALSE, getter_AddRefs(generatedFrame))) {
// Add the generated frame to the child list
childItems.AddChild(generatedFrame);
}
}
}
// Set the scrolled frame's initial child lists
scrolledFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// set the floated list
if (aState.mFloatedItems.childList) {
scrolledFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
// now we need to set the initial child list of the listFrame and this of course will be the gfx scrollframe
listFrame->SetInitialChildList(aPresContext, nsnull, newScrollFrame);
// our new frame retured is the top frame which is the list frame.
aNewFrame = listFrame;
// yes we have already initialized our frame
aFrameHasBeenInitialized = PR_TRUE;
#else
nsIFrame * listFrame;
rv = NS_NewListControlFrame(aPresShell, &listFrame);
aNewFrame = listFrame;
PRUint32 flags = NS_BLOCK_SHRINK_WRAP | (aIsAbsolutelyPositioned?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;
// 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.
nsIView *listView;
listFrame->GetView(aPresContext, &listView);
NS_ASSERTION(nsnull != listView,"ListFrame's view is nsnull");
//listView->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN);
aFrameHasBeenInitialized = PR_TRUE;
#endif
}
} else {
NS_ASSERTION(0, "We longer support native widgets");
}
}
else {
// Not frame based. Use a SelectFrame which creates a native widget.
NS_ASSERTION(0, "We longer support native widgets");
}
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,
nsIStyleContext* aStyleContext,
PRBool aIsAbsolutelyPositioned,
PRBool aIsFixedPositioned,
PRBool aCreateBlock)
{
// Initialize it
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aState.mAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aState.mFixedItems.containingBlock;
}
nsCOMPtr<nsIStyleContext> scrollPseudoStyle;
nsCOMPtr<nsIStyleContext> scrolledPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsLayoutAtoms::scrolledContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(scrolledPseudoStyle));
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, scrollFrame);
// Initialize the frame and force it to have a view
// the scrolled frame is anonymous and does not have a content node
InitAndRestoreFrame(aPresContext, aState, aContent,
scrollFrame, scrolledPseudoStyle, nsnull, scrolledFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, scrolledFrame,
scrolledPseudoStyle, PR_TRUE);
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(scrolledFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
PRBool isPositionedContainingBlock = aIsAbsolutelyPositioned ||
aIsFixedPositioned;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(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) {
PRUint32 numOptions = 0;
result = selectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(result) && 0 == numOptions) {
nsCOMPtr<nsIStyleContext> styleContext;
nsIFrame* generatedFrame = nsnull;
scrolledFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, scrolledFrame, aContent,
styleContext, nsLayoutAtoms::dummyOptionPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
childItems.AddChild(generatedFrame);
}
}
}
//////////////////////////////////////////////////
//////////////////////////////////////////////////
// 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::floaterList,
aState.mFloatedItems.childList);
}
// Set the scroll frame's initial child list
scrollFrame->SetInitialChildList(aPresContext, nsnull, scrolledFrame);
return NS_OK;
}
/**
* 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::ConstructTitledBoxFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame)
{
nsIFrame * newFrame;
nsresult rv = NS_NewTitledBoxFrame(aPresShell, &newFrame);
if (!NS_SUCCEEDED(rv)) {
return rv;
}
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
// Initialize it
nsIFrame* geometricParent = aParentFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
geometricParent, aStyleContext, nsnull, newFrame);
// cache our display type
const nsStyleDisplay* styleDisplay;
newFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) styleDisplay);
nsIFrame * boxFrame;
NS_NewTitledBoxInnerFrame(shell, &boxFrame);
// Resolve style and initialize the frame
nsIStyleContext* styleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsXULAtoms::titledboxContentPseudo,
aStyleContext, PR_FALSE, &styleContext);
InitAndRestoreFrame(aPresContext, aState, nsnull,
newFrame, styleContext, nsnull, boxFrame);
NS_RELEASE(styleContext);
nsFrameItems childItems;
ProcessChildren(aPresShell, aPresContext, aState, aContent, boxFrame, PR_FALSE,
childItems, PR_TRUE);
static NS_DEFINE_IID(kTitleFrameCID, NS_TITLE_FRAME_CID);
nsIFrame * child = childItems.childList;
nsIFrame * previous = nsnull;
nsIFrame* titleFrame = nsnull;
while (nsnull != child) {
nsresult result = child->QueryInterface(kTitleFrameCID, (void**)&titleFrame);
if (NS_SUCCEEDED(result) && titleFrame) {
if (nsnull != previous) {
nsIFrame * nxt;
titleFrame->GetNextSibling(&nxt);
previous->SetNextSibling(nxt);
titleFrame->SetNextSibling(boxFrame);
break;
} else {
nsIFrame * nxt;
titleFrame->GetNextSibling(&nxt);
childItems.childList = nxt;
titleFrame->SetNextSibling(boxFrame);
break;
}
}
previous = child;
child->GetNextSibling(&child);
}
// Set the scrolled frame's initial child lists
boxFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (titleFrame)
newFrame->SetInitialChildList(aPresContext, nsnull, titleFrame);
else
newFrame->SetInitialChildList(aPresContext, nsnull, boxFrame);
// our new frame retured is the top frame which is the list frame.
aNewFrame = newFrame;
return NS_OK;
}
/**
* 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::ConstructFieldSetFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
PRBool& aProcessChildren,
PRBool aIsAbsolutelyPositioned,
PRBool& aFrameHasBeenInitialized,
PRBool aIsFixedPositioned)
{
nsIFrame * newFrame;
PRUint32 flags = aIsAbsolutelyPositioned ? NS_BLOCK_SPACE_MGR : 0;
nsresult rv = NS_NewFieldSetFrame(aPresShell, &newFrame, flags);
if (!NS_SUCCEEDED(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(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// cache our display type
const nsStyleDisplay* styleDisplay;
newFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) styleDisplay);
/*
PRUint32 childFlags = (NS_STYLE_DISPLAY_BLOCK != styleDisplay->mDisplay) ? NS_BLOCK_SHRINK_WRAP : 0;
// inherit the FieldSet state
PRUint32 parentState;
newFrame->GetFrameState( &parentState );
childFlags |= parentState;
childFlags |= NS_BLOCK_SHRINK_WRAP;
*/
nsIFrame * areaFrame;
// NS_NewAreaFrame(shell, &areaFrame, childFlags);
NS_NewBlockFrame(shell, &areaFrame);
// Resolve style and initialize the frame
nsIStyleContext* styleContext;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::fieldsetContentPseudo,
aStyleContext, PR_FALSE, &styleContext);
InitAndRestoreFrame(aPresContext, aState, aContent,
newFrame, styleContext, nsnull, areaFrame);
NS_RELEASE(styleContext);
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(areaFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
PRBool isPositionedContainingBlock = aIsAbsolutelyPositioned ||
aIsFixedPositioned;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(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) {
nsIFrame * nxt;
legendFrame->GetNextSibling(&nxt);
previous->SetNextSibling(nxt);
areaFrame->SetNextSibling(legendFrame);
legendFrame->SetParent(newFrame);
legendFrame->SetNextSibling(nsnull);
break;
} else {
nsIFrame * nxt;
legendFrame->GetNextSibling(&nxt);
childItems.childList = nxt;
areaFrame->SetNextSibling(legendFrame);
legendFrame->SetParent(newFrame);
legendFrame->SetNextSibling(nsnull);
break;
}
}
child->GetNextSibling(&child);
}
// 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::floaterList,
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;
#if 0
nsIFrame* newChildList = aChildList;
// Set the geometric and content parent for each of the child frames
// that will go into the area frame's child list.
// The legend frame does not go into the list
nsIFrame* lastNewFrame = nsnull;
for (nsIFrame* frame = aChildList; nsnull != frame;) {
nsIFrame* legendFrame = nsnull;
nsresult result = frame->QueryInterface(kLegendFrameCID, (void**)&legendFrame);
if (NS_SUCCEEDED(result) && legendFrame) {
if (mLegendFrame) { // we already have a legend, destroy it
frame->GetNextSibling(&frame);
if (lastNewFrame) {
lastNewFrame->SetNextSibling(frame);
}
else {
aChildList = frame;
}
legendFrame->Destroy(aPresContext);
}
else {
nsIFrame* nextFrame;
frame->GetNextSibling(&nextFrame);
if (lastNewFrame) {
lastNewFrame->SetNextSibling(nextFrame);
} else {
newChildList = nextFrame;
}
frame->SetParent(this);
mFrames.FirstChild()->SetNextSibling(frame);
mLegendFrame = frame;
mLegendFrame->SetNextSibling(nsnull);
frame = nextFrame;
}
} else {
frame->SetParent(mFrames.FirstChild());
lastNewFrame = frame;
frame->GetNextSibling(&frame);
}
}
// Queue up the frames for the content frame
return mFrames.FirstChild()->SetInitialChildList(aPresContext, nsnull, newChildList);
#endif
}
nsresult
nsCSSFrameConstructor::ConstructFrameByTag(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
PRBool processChildren = PR_FALSE; // whether we should process child content
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isFloating = 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;
nsresult rv = NS_OK;
if (nsLayoutAtoms::textTagName == aTag) {
rv = NS_NewTextFrame(aPresShell, &newFrame);
// Text frames don't go in the content->frame hash table, because
// they're anonymous. This keeps the hash table smaller
addToHashTable = PR_FALSE;
isReplaced = PR_TRUE; // XXX kipp: temporary
}
else {
nsIHTMLContent *htmlContent;
// Ignore the tag if it's not HTML content
if (NS_SUCCEEDED(aContent->QueryInterface(kIHTMLContentIID, (void **)&htmlContent))) {
NS_RELEASE(htmlContent);
// See if the element is absolute or fixed positioned
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
}
else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
}
else if (NS_STYLE_FLOAT_NONE != display->mFloats) {
isFloating = PR_TRUE;
}
// Create a frame based on the tag
if (nsHTMLAtoms::img == aTag) {
isReplaced = PR_TRUE;
// XXX If image display is turned off, then use ConstructAlternateImageFrame()
// instead...
rv = NS_NewImageFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::hr == aTag) {
rv = NS_NewHRFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::br == aTag) {
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) {
rv = NS_NewWBRFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::input == aTag) {
isReplaced = PR_TRUE;
rv = CreateInputFrame(aPresShell, aPresContext, aContent, newFrame, aStyleContext);
}
else if (nsHTMLAtoms::textarea == aTag) {
isReplaced = PR_TRUE;
rv = ConstructTextControlFrame(aPresShell, aPresContext, newFrame, aContent);
}
else if (nsHTMLAtoms::select == aTag) {
isReplaced = PR_TRUE;
rv = ConstructSelectFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aTag, aStyleContext, newFrame, processChildren,
isAbsolutelyPositioned, frameHasBeenInitialized,
isFixedPositioned, aFrameItems);
}
else if (nsHTMLAtoms::applet == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::embed == aTag) {
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::fieldset == aTag) {
#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) {
rv = NS_NewLegendFrame(aPresShell, &newFrame);
processChildren = PR_TRUE;
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::object == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::form == aTag) {
rv = NS_NewFormFrame(aPresShell, &newFrame, 0);
processChildren = PR_TRUE;
}
else if (nsHTMLAtoms::frameset == aTag) {
rv = NS_NewHTMLFramesetFrame(aPresShell, &newFrame);
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::iframe == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
else if (nsHTMLAtoms::spacer == aTag) {
rv = NS_NewSpacerFrame(aPresShell, &newFrame);
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::button == aTag) {
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::label == aTag) {
rv = NS_NewLabelFrame(aPresShell, &newFrame);
processChildren = PR_TRUE;
}
}
}
// 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) && (nsnull != newFrame)) {
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
nsFrameState state;
newFrame->GetFrameState(&state);
newFrame->SetFrameState(state | 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;
}
}
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(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
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,
childItems);
// Set the frame's initial child list
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 {
// 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.
nsresult
nsCSSFrameConstructor::CreateAnonymousFrames(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIAtom* aTag,
nsFrameConstructorState& aState,
nsIContent* aParent,
nsIFrame* aNewFrame,
nsFrameItems& aChildItems)
{
if (aTag == nsXULAtoms::treecell)
return NS_OK; // Don't even allow the XBL check. The inner cell frame throws it off.
// There's a separate special method for XBL treecells.
nsCOMPtr<nsIStyleContext> styleContext;
aNewFrame->GetStyleContext(getter_AddRefs(styleContext));
const nsStyleUserInterface* ui= (const nsStyleUserInterface*)
styleContext->GetStyleData(eStyleStruct_UserInterface);
if (ui->mBehavior != "") {
// Get the XBL loader.
nsresult rv;
NS_WITH_SERVICE(nsIXBLService, xblService, "component://netscape/xbl", &rv);
if (!xblService)
return rv;
// Load the bindings.
xblService->LoadBindings(aParent, ui->mBehavior);
// Retrieve the anonymous content that we should build.
nsCOMPtr<nsISupportsArray> anonymousItems;
xblService->GetContentList(aParent, getter_AddRefs(anonymousItems));
if (!anonymousItems)
return NS_OK;
// Build the frames for the anonymous content.
PRUint32 count = 0;
anonymousItems->Count(&count);
for (PRUint32 i=0; i < count; i++)
{
// get our child's content and set its parent to our content
nsCOMPtr<nsISupports> node;
anonymousItems->GetElementAt(i,getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
// create the frame and attach it to our frame
ConstructFrame(aPresShell, aPresContext, aState, content, aNewFrame, aChildItems);
}
return NS_OK;
}
// only these tags types can have anonymous content. We do this check for performance
// reasons. If we did a query interface on every tag it would be very inefficient.
if (aTag != nsHTMLAtoms::input &&
aTag != nsHTMLAtoms::combobox &&
aTag != nsXULAtoms::slider &&
aTag != nsXULAtoms::splitter &&
aTag != nsXULAtoms::scrollbar &&
aTag != nsXULAtoms::menu &&
aTag != nsXULAtoms::menuitem
) {
return NS_OK;
}
// get the document
nsCOMPtr<nsIDocument> doc;
nsresult rv = aParent->GetDocument(*getter_AddRefs(doc));
if (NS_FAILED(rv) || !doc)
return rv;
return CreateAnonymousFrames(aPresShell, aPresContext, aState, aParent, doc, aNewFrame, 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* aNewFrame,
nsFrameItems& aChildItems)
{
nsCOMPtr<nsIAnonymousContentCreator> creator(do_QueryInterface(aNewFrame));
if (!creator)
return NS_OK;
nsCOMPtr<nsISupportsArray> anonymousItems;
NS_NewISupportsArray(getter_AddRefs(anonymousItems));
creator->CreateAnonymousContent(aPresContext, *anonymousItems);
PRUint32 count = 0;
anonymousItems->Count(&count);
for (PRUint32 i=0; i < count; i++)
{
// get our child's content and set its parent to our content
nsCOMPtr<nsISupports> node;
anonymousItems->GetElementAt(i,getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
content->SetParent(aParent);
content->SetDocument(aDocument, PR_TRUE);
// create the frame and attach it to our frame
ConstructFrame(aPresShell, aPresContext, aState, content, aNewFrame, aChildItems);
}
return NS_OK;
}
// after the node has been constructed and initialized create any
// anonymous content a node needs.
nsresult
nsCSSFrameConstructor::CreateAnonymousTreeCellFrames(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIAtom* aTag,
nsFrameConstructorState& aState,
nsIContent* aParent,
nsIFrame* aNewFrame,
nsIFrame* aNewCellFrame,
nsFrameItems& aChildItems)
{
nsCOMPtr<nsIStyleContext> styleContext;
aNewCellFrame->GetStyleContext(getter_AddRefs(styleContext));
const nsStyleUserInterface* ui= (const nsStyleUserInterface*)
styleContext->GetStyleData(eStyleStruct_UserInterface);
if (ui->mBehavior != "") {
// Get the XBL loader.
nsresult rv;
NS_WITH_SERVICE(nsIXBLService, xblService, "component://netscape/xbl", &rv);
if (!xblService)
return rv;
// Load the bindings.
xblService->LoadBindings(aParent, ui->mBehavior);
// Retrieve the anonymous content that we should build.
nsCOMPtr<nsISupportsArray> anonymousItems;
xblService->GetContentList(aParent, getter_AddRefs(anonymousItems));
if (!anonymousItems)
return NS_OK;
// Build the frames for the anonymous content.
PRUint32 count = 0;
anonymousItems->Count(&count);
for (PRUint32 i=0; i < count; i++)
{
// get our child's content and set its parent to our content
nsCOMPtr<nsISupports> node;
anonymousItems->GetElementAt(i,getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
// create the frame and attach it to our frame
ConstructFrame(aPresShell, aPresContext, aState, content, aNewFrame, aChildItems);
}
return NS_OK;
}
return NS_OK;
}
#ifdef INCLUDE_XUL
nsresult
nsCSSFrameConstructor::ConstructXULFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems,
PRBool& aHaltProcessing)
{
PRBool primaryFrameSet = PR_FALSE;
PRBool processChildren = PR_FALSE; // whether we should process child content
nsresult rv = NS_OK;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = 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;
nsIFrame* ignore = nsnull; // I have no idea what this is used for.
nsTreeCreator treeCreator(aPresShell); // Used to make tree views.
NS_ASSERTION(aTag != nsnull, "null XUL tag");
if (aTag == nsnull)
return NS_OK;
PRInt32 nameSpaceID;
if (NS_SUCCEEDED(aContent->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
// See if the element is absolutely positioned
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition)
isAbsolutelyPositioned = PR_TRUE;
// Create a frame based on the tag
// box is first because it is created the most.
// BOX CONSTRUCTION
if (aTag == nsXULAtoms::box || aTag == nsXULAtoms::tabbox ||
aTag == nsXULAtoms::tabpage || aTag == nsXULAtoms::tabcontrol) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewBoxFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of BOX CONSTRUCTION logic
// TITLED BUTTON CONSTRUCTION
else if (aTag == nsXULAtoms::titledbutton ||
aTag == nsXULAtoms::image) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTitledButtonFrame(aPresShell, &newFrame);
}
// End of TITLED BUTTON CONSTRUCTION logic
else if (aTag == nsXULAtoms::spring) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewSpringFrame(aPresShell, &newFrame);
}
// End of TITLED BUTTON CONSTRUCTION logic
// TEXT CONSTRUCTION
else if (aTag == nsXULAtoms::text) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewXULTextFrame(aPresShell, &newFrame);
}
// End of TEXT CONSTRUCTION logic
// Menu Construction
else if (aTag == nsXULAtoms::menu ||
aTag == nsXULAtoms::menuitem ||
aTag == nsXULAtoms::menulist ||
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));
}
else if (aTag == nsXULAtoms::menubar) {
#ifdef XP_MAC // 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::popupset) {
// This frame contains child popups
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewPopupSetFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::menupopup || aTag == nsXULAtoms::popup) {
// This is its own frame that derives from
// box.
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewMenuPopupFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::title) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTitleFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
} // End of BOX CONSTRUCTION logic
else if (aTag == nsXULAtoms::titledbox) {
ConstructTitledBoxFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aTag, aStyleContext, newFrame);
processChildren = PR_FALSE;
isReplaced = PR_TRUE;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
// Boxes can scroll.
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
else if (aTag == nsXULAtoms::spinner)
rv = NS_NewSpinnerFrame(aPresShell, &newFrame);
else if (aTag == nsXULAtoms::colorpicker)
rv = NS_NewColorPickerFrame(aPresShell, &newFrame);
else if (aTag == nsXULAtoms::fontpicker)
rv = NS_NewFontPickerFrame(aPresShell, &newFrame);
else if (aTag == nsXULAtoms::iframe) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::editor) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
else if (aTag == nsXULAtoms::browser) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(aPresShell, &newFrame);
}
// TREE CONSTRUCTION
// The following code is used to construct a tree view from the XUL content
// model.
else if (aTag == nsXULAtoms::treeitem ||
aTag == nsXULAtoms::treechildren) {
nsIFrame* newTopFrame;
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
PR_TRUE, newTopFrame, newFrame, treeCreator, nsnull);
aFrameItems.AddChild(newFrame);
return rv;
}
else if (aTag == nsXULAtoms::tree)
{
nsIFrame* geometricParent = aParentFrame;
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
aParentFrame = aState.mAbsoluteItems.containingBlock;
}
if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
aParentFrame = aState.mFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent, geometricParent, aStyleContext,
newFrame, treeCreator);
// Note: table construction function takes care of initializing the frame,
// processing children, and setting the initial child list
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 table frame to the flow
aFrameItems.AddChild(newFrame);
}
// Make sure we add a mapping in the content->frame hash table
goto addToHashTable;
}
else if (aTag == nsXULAtoms::treerow)
{
// A tree item causes a table row to be constructed that is always
// slaved to the nearest enclosing table row group (regardless of how
// deeply nested it is within other tree items).
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, treeCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
else if (aTag == nsXULAtoms::treecell)
{
// We could be in a hidden column.
// XXX This is so disgusting.
if (nsTreeCellFrame::ShouldBuildCell(aParentFrame, aContent)) {
// We make a tree cell frame and process the children.
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, ignore2, treeCreator);
aFrameItems.AddChild(newFrame);
}
else aHaltProcessing = PR_TRUE;
return rv;
}
else if (aTag == nsXULAtoms::treeindentation)
{
rv = NS_NewTreeIndentationFrame(aPresShell, &newFrame);
}
// End of TREE CONSTRUCTION code here (there's more later on in the function)
// TOOLBAR CONSTRUCTION
else if (aTag == nsXULAtoms::toolbox) {
processChildren = PR_TRUE;
rv = NS_NewToolboxFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (IsScrollable(aPresContext, display)) {
// build the scrollframe
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
else if (aTag == nsXULAtoms::toolbar) {
processChildren = PR_TRUE;
rv = NS_NewToolbarFrame(aPresShell, &newFrame);
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
if (IsScrollable(aPresContext, display)) {
// set the top to be the newly created scrollframe
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, newFrame, aParentFrame,
topFrame, aStyleContext);
// we have a scrollframe so the parent becomes the scroll frame.
newFrame->GetParent(&aParentFrame);
primaryFrameSet = PR_TRUE;
frameHasBeenInitialized = PR_TRUE;
}
}
else if (aTag == nsXULAtoms::toolbaritem) {
processChildren = PR_TRUE;
rv = NS_NewToolbarItemFrame(aPresShell, &newFrame);
}
// End of TOOLBAR CONSTRUCTION logic
// 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
// XULCHECKBOX CONSTRUCTION
else if (aTag == nsXULAtoms::checkbox ||
aTag == nsXULAtoms::radio) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewXULCheckboxFrame(aPresShell, &newFrame);
}
// End of XULCHECKBOX CONSTRUCTION logic
// STACK CONSTRUCTION
else if (aTag == nsXULAtoms::stack) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewStackFrame(aPresShell, &newFrame);
}
// End of STACK CONSTRUCTION logic
// DECK CONSTRUCTION
else if (aTag == nsXULAtoms::deck || aTag == nsXULAtoms::tabpanel) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewDeckFrame(aPresShell, &newFrame);
}
// End of DECK CONSTRUCTION logic
// TAB CONSTRUCTION
else if (aTag == nsXULAtoms::tab) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTabFrame(aPresShell, &newFrame);
}
// End of TAB CONSTRUCTION logic
// SLIDER CONSTRUCTION
else 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);
}
// 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
// THUMB CONSTRUCTION
else if (aTag == nsXULAtoms::thumb) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewThumbFrame(aPresShell, &newFrame);
}
// End of THUMB CONSTRUCTION logic
// 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
}
// 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) {
nsFrameState state;
newFrame->GetFrameState(&state);
newFrame->SetFrameState(state | 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) {
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(aPresContext, newFrame,
aStyleContext, PR_FALSE);
}
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_FALSE, childItems, PR_FALSE);
// if there are any anonymous children create frames for them
CreateAnonymousFrames(aPresShell, aPresContext, aTag, aState, aContent, newFrame,
childItems);
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
}
// Add the new frame to our list of frame items.
aFrameItems.AddChild(topFrame);
// 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);
}
}
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;
}
#endif
nsresult
nsCSSFrameConstructor::BeginBuildingScrollFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIStyleContext* aContentStyle,
nsIFrame* aParentFrame,
nsIAtom* aScrolledPseudo,
nsIDocument* aDocument,
nsIFrame*& aNewFrame,
nsCOMPtr<nsIStyleContext>& aScrolledChildStyle,
nsIFrame*& aScrollableFrame)
{
nsIFrame* scrollFrame = nsnull;
nsIFrame* parentFrame = nsnull;
nsIFrame* gfxScrollFrame = nsnull;
nsFrameItems anonymousItems;
nsCOMPtr<nsIStyleContext> contentStyle = dont_QueryInterface(aContentStyle);
PRBool isGfx = HasGfxScrollbars(aPresContext);
if (isGfx) {
BuildGfxScrollFrame(aPresShell, aPresContext, aState, aContent, aDocument, aParentFrame,
contentStyle, gfxScrollFrame, anonymousItems);
scrollFrame = anonymousItems.childList;
parentFrame = gfxScrollFrame;
aNewFrame = gfxScrollFrame;
// we used the style that was passed in. So resolve another one.
nsCOMPtr<nsIStyleContext> scrollPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsLayoutAtoms::scrolledContentPseudo,
contentStyle, PR_FALSE,
getter_AddRefs(scrollPseudoStyle));
contentStyle = scrollPseudoStyle;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, contentStyle, nsnull, scrollFrame);
} else {
NS_NewScrollFrame(aPresShell, &scrollFrame);
aNewFrame = scrollFrame;
parentFrame = aParentFrame;
InitAndRestoreFrame(aPresContext, aState, aContent,
parentFrame, contentStyle, nsnull, scrollFrame);
}
// initialize the scrolled frame
nsCOMPtr<nsIStyleContext> scrolledPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
aScrolledPseudo,
contentStyle, PR_FALSE,
getter_AddRefs(scrolledPseudoStyle));
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);
}
aScrolledChildStyle = scrolledPseudoStyle;
return NS_OK;
}
nsresult
nsCSSFrameConstructor::FinishBuildingScrollFrame(nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aScrollFrame,
nsIFrame* aScrolledFrame,
nsIStyleContext* aScrolledContentStyle)
{
// create a view
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, aScrolledFrame,
aScrolledContentStyle, 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)
* @param aScrolledContentStyle the style that was resolved for the scrolled frame. (returned)
*/
nsresult
nsCSSFrameConstructor::BuildScrollFrame (nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIStyleContext* aContentStyle,
nsIFrame* aScrolledFrame,
nsIFrame* aParentFrame,
nsIFrame*& aNewFrame,
nsIStyleContext*& aScrolledContentStyle)
{
nsIFrame *scrollFrame;
nsCOMPtr<nsIDocument> document;
aContent->GetDocument(*getter_AddRefs(document));
nsCOMPtr<nsIStyleContext> scrolledContentStyle;
BeginBuildingScrollFrame(aPresShell, aPresContext,
aState,
aContent,
aContentStyle,
aParentFrame,
nsLayoutAtoms::scrolledContentPseudo,
document,
aNewFrame,
scrolledContentStyle,
scrollFrame);
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 );
return NS_OK;
}
/**
* If we are building GFX scrollframes this will create one
*/
nsresult
nsCSSFrameConstructor::BuildGfxScrollFrame (nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIDocument* aDocument,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame*& aNewFrame,
nsFrameItems& aAnonymousFrames)
{
NS_NewGfxScrollFrame(aPresShell, &aNewFrame,aDocument);
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
nsIFrame* scrollbox = nsnull;
NS_NewScrollPortFrame(aPresShell, &scrollbox);
aAnonymousFrames.AddChild(scrollbox);
// if there are any anonymous children for the nsScrollFrame create frames for them.
CreateAnonymousFrames(aPresShell, aPresContext, aState, aContent, aDocument, aNewFrame,
aAnonymousFrames);
return NS_OK;
}
nsresult
nsCSSFrameConstructor::ConstructFrameByDisplayType(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
PRBool primaryFrameSet = PR_FALSE;
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isFloating = PR_FALSE;
PRBool isBlock = aDisplay->IsBlockLevel();
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;
nsresult rv = NS_OK;
// Get the position syle info
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
// The frame is also a block if it's an inline frame that's floated or
// absolutely positioned
if (NS_STYLE_FLOAT_NONE != aDisplay->mFloats) {
isFloating = PR_TRUE;
}
if ((NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) &&
(isFloating || position->IsAbsolutelyPositioned())) {
isBlock = PR_TRUE;
}
// 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 ((isBlock && (aDisplay->mDisplay != NS_STYLE_DISPLAY_TABLE)) &&
IsScrollable(aPresContext, aDisplay)) {
// See if it's absolute positioned or fixed positioned
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
} else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
}
// Initialize it
nsIFrame* geometricParent = aParentFrame;
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);
nsIStyleContext* newStyle = nsnull;
// Build the scrollframe it
BuildScrollFrame(aPresShell, aPresContext, aState, aContent, aStyleContext, scrolledFrame, geometricParent,
newFrame, newStyle);
// buildscrollframe sets the primary frame.
primaryFrameSet = PR_TRUE;
//-----
// The area frame is a floater container
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
nsFrameConstructorSaveState floaterSaveState;
aState.PushFloaterContainingBlock(scrolledFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
// Process children
nsFrameConstructorSaveState absoluteSaveState;
nsFrameItems childItems;
PRBool isPositionedContainingBlock = isAbsolutelyPositioned ||
isFixedPositioned;
if (isPositionedContainingBlock) {
// The area frame becomes a container for child frames that are
// absolutely positioned
aState.PushAbsoluteContainingBlock(scrolledFrame, absoluteSaveState);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, scrolledFrame, PR_FALSE,
childItems, PR_TRUE);
// 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::floaterList,
aState.mFloatedItems.childList);
}
///------
}
// See if the frame is absolute or fixed positioned
else if (position->IsAbsolutelyPositioned() &&
((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) {
if (NS_STYLE_POSITION_ABSOLUTE == position->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(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content. The area frame becomes a container for child
// frames that are absolutely positioned
nsFrameConstructorSaveState absoluteSaveState;
nsFrameConstructorSaveState floaterSaveState;
nsFrameItems childItems;
PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE;
if (aDisplay->IsBlockLevel()) {
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
}
aState.PushAbsoluteContainingBlock(newFrame, absoluteSaveState);
aState.PushFloaterContainingBlock(newFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, PR_TRUE);
// 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::floaterList,
aState.mFloatedItems.childList);
}
}
// See if the frame is floated, and it's a block or inline frame
else if (isFloating &&
((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) {
// Create an area frame
NS_NewFloatingItemWrapperFrame(aPresShell, &newFrame);
// Initialize the frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aState.mFloatedItems.containingBlock,
aStyleContext, nsnull, newFrame);
// See if we need to create a view
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content
nsFrameConstructorSaveState floaterSaveState;
nsFrameItems childItems;
PRBool haveFirstLetterStyle = PR_FALSE, haveFirstLineStyle = PR_FALSE;
if (aDisplay->IsBlockLevel()) {
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
}
aState.PushFloaterContainingBlock(newFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame,
PR_TRUE, childItems, PR_TRUE);
// Set the frame's initial child list(s)
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mFloatedItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
// See if it's relatively positioned
else if ((NS_STYLE_POSITION_RELATIVE == position->mPosition) &&
((NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == aDisplay->mDisplay))) {
// Is it block-level or inline-level?
PRBool isBlockFrame = PR_FALSE;
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);
isBlockFrame = PR_TRUE;
} else {
// Create a positioned inline frame
NS_NewPositionedInlineFrame(aPresShell, &newFrame);
}
// Initialize the frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, newFrame);
// Create a view
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content. Relatively positioned frames becomes a
// container for child frames that are positioned
nsFrameConstructorSaveState absoluteSaveState;
nsFrameConstructorSaveState floaterSaveState;
nsFrameItems childItems;
aState.PushAbsoluteContainingBlock(newFrame, absoluteSaveState);
if (isBlockFrame) {
PRBool haveFirstLetterStyle, haveFirstLineStyle;
HaveSpecialBlockStyle(aPresContext, aContent, aStyleContext,
&haveFirstLetterStyle, &haveFirstLineStyle);
aState.PushFloaterContainingBlock(newFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
}
ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, isBlockFrame);
// Set the frame's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
if (aState.mAbsoluteItems.childList) {
newFrame->SetInitialChildList(aPresContext, nsLayoutAtoms::absoluteList,
aState.mAbsoluteItems.childList);
}
if (isBlockFrame && aState.mFloatedItems.childList) {
newFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
// 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)) {
// Create the block frame
rv = NS_NewBlockFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
// That worked so construct the block and its children
rv = ConstructBlock(aPresShell, aPresContext, aState, aDisplay, aContent,
aParentFrame, aStyleContext, newFrame);
}
}
// See if it's an inline frame of some sort
else if ((NS_STYLE_DISPLAY_INLINE == aDisplay->mDisplay) ||
(NS_STYLE_DISPLAY_MARKER == aDisplay->mDisplay)) {
// Create the inline frame
rv = NS_NewInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
// That worked so construct the inline and its children
rv = ConstructInline(aPresShell, aPresContext, aState, aDisplay, aContent,
aParentFrame, aStyleContext, newFrame,
&newBlock, &nextInline);
}
// 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 {
nsIFrame* ignore;
// 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:
{
nsIFrame* geometricParent = aParentFrame;
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
geometricParent = aState.mAbsoluteItems.containingBlock;
}
if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
geometricParent = aState.mFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent, geometricParent,
aStyleContext, newFrame, tableCreator);
// 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:
{
rv = ConstructTableCaptionFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, newFrame, ignore, tableCreator);
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:
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP:
{
PRBool isRowGroup = (NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP != aDisplay->mDisplay);
rv = ConstructTableGroupFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
aStyleContext, isRowGroup, newFrame, ignore, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
case NS_STYLE_DISPLAY_TABLE_CELL:
{
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, ignore2, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
default:
// Don't create any frame for content that's not displayed...
break;
}
}
// If the frame is absolutely positioned, then create a placeholder frame
nearly_done:
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 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 if (nsnull != newFrame) {
// Add the frame we just created to the flowed list
aFrameItems.AddChild(newFrame);
if (newBlock) {
aFrameItems.AddChild(newBlock);
if (nextInline) {
aFrameItems.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;
}
nsresult
nsCSSFrameConstructor::GetAdjustedParentFrame(nsIPresContext* aPresContext,
nsIFrame* aCurrentParentFrame,
PRUint8 aChildDisplayType,
nsIFrame*& aNewParentFrame)
{
NS_PRECONDITION(nsnull!=aCurrentParentFrame, "bad arg aCurrentParentFrame");
nsresult rv = NS_OK;
// by default, the new parent frame is the given current parent frame
aNewParentFrame = aCurrentParentFrame;
if (nsnull != aCurrentParentFrame) {
const nsStyleDisplay* currentParentDisplay;
aCurrentParentFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)currentParentDisplay);
if (NS_STYLE_DISPLAY_TABLE == currentParentDisplay->mDisplay) {
if (NS_STYLE_DISPLAY_TABLE_CAPTION != aChildDisplayType) {
nsIFrame *innerTableFrame = nsnull;
aCurrentParentFrame->FirstChild(aPresContext, nsnull, &innerTableFrame);
if (nsnull != innerTableFrame) {
const nsStyleDisplay* innerTableDisplay;
innerTableFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)innerTableDisplay);
if (NS_STYLE_DISPLAY_TABLE == innerTableDisplay->mDisplay) {
// we were given the outer table frame, use the inner table frame
aNewParentFrame=innerTableFrame;
} // else we were already given the inner table frame
} // else the current parent has no children and cannot be an outer table frame
} else { // else the child is a caption and really belongs to the outer table frame
nsIFrame* parFrame = nsnull;
aCurrentParentFrame->GetParent(&parFrame);
const nsStyleDisplay* parDisplay;
aCurrentParentFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)parDisplay);
if (NS_STYLE_DISPLAY_TABLE == parDisplay->mDisplay) {
aNewParentFrame = parFrame; // aNewParentFrame was an inner frame
}
}
}
} else {
rv = NS_ERROR_NULL_POINTER;
}
NS_POSTCONDITION(nsnull!=aNewParentFrame, "bad result null aNewParentFrame");
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,
nsIStyleContext* aStyleContext,
nsIFrame* aPrevInFlow,
nsIFrame* aNewFrame)
{
nsresult rv = NS_OK;
NS_ASSERTION(aNewFrame, "Null frame cannot be initialized");
// Initialize the frame
rv = aNewFrame->Init(aPresContext, aContent, aParentFrame,
aStyleContext, aPrevInFlow);
if (aState.mFrameState && aState.mFrameManager) {
aState.mFrameManager->RestoreFrameState(aPresContext, aNewFrame, aState.mFrameState);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ResolveStyleContext(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIAtom* aTag,
nsIStyleContext** aStyleContext)
{
nsresult rv = NS_OK;
// Resolve the style context based on the content object and the parent
// style context
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
if (nsLayoutAtoms::textTagName == aTag) {
// Use a special pseudo element style context for text
nsCOMPtr<nsIContent> parentContent;
if (nsnull != aParentFrame) {
aParentFrame->GetContent(getter_AddRefs(parentContent));
}
rv = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsHTMLAtoms::textPseudo,
parentStyleContext,
PR_FALSE,
aStyleContext);
} else if (nsLayoutAtoms::commentTagName == aTag) {
// Use a special pseudo element style context for comments
nsCOMPtr<nsIContent> parentContent;
if (nsnull != aParentFrame) {
aParentFrame->GetContent(getter_AddRefs(parentContent));
}
rv = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsHTMLAtoms::commentPseudo,
parentStyleContext,
PR_FALSE,
aStyleContext);
} else if (nsLayoutAtoms::processingInstructionTagName == aTag) {
// Use a special pseudo element style context for comments
nsCOMPtr<nsIContent> parentContent;
if (nsnull != aParentFrame) {
aParentFrame->GetContent(getter_AddRefs(parentContent));
}
rv = aPresContext->ResolvePseudoStyleContextFor(parentContent,
nsHTMLAtoms::processingInstructionPseudo,
parentStyleContext,
PR_FALSE,
aStyleContext);
} else {
rv = aPresContext->ResolveStyleContextFor(aContent, parentStyleContext,
PR_FALSE,
aStyleContext);
}
return rv;
}
// MathML Mod - RBS
#ifdef MOZ_MATHML
nsresult
nsCSSFrameConstructor::ConstructMathMLFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsFrameItems& aFrameItems)
{
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;
NS_ASSERTION(aTag != nsnull, "null MathML tag");
if (aTag == nsnull)
return NS_OK;
// Make sure that we remain confined in the MathML world
PRInt32 nameSpaceID;
rv = aContent->GetNameSpaceID(nameSpaceID);
if (NS_FAILED(rv) || nameSpaceID != nsMathMLAtoms::nameSpaceID)
return NS_OK;
// Initialize the new frame
nsIFrame* newFrame = nsnull;
nsIFrame* ignore = nsnull;
nsMathMLmtableCreator mathTableCreator(aPresShell); // Used to make table views.
// See if the element is absolute or fixed positioned
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
}
else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
}
if (aTag == nsMathMLAtoms::mi_)
rv = NS_NewMathMLmiFrame(aPresShell, &newFrame);
else if (aTag == nsMathMLAtoms::mn_)
rv = NS_NewMathMLmnFrame(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::ms_)
rv = NS_NewMathMLmsFrame(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::mtext_ ||
aTag == nsMathMLAtoms::merror_ ||
aTag == nsMathMLAtoms::none_ ||
aTag == nsMathMLAtoms::mprescripts_ )
rv = NS_NewMathMLmrowFrame(aPresShell, &newFrame);
// CONSTRUCTION of MTABLE elements
else if (aTag == nsMathMLAtoms::mtable_) {
// <mtable> is an inline-table, for the moment, we just do what
// <table> does, and wait until nsLineLayout::TreatFrameAsBlock
// can handle NS_STYLE_DISPLAY_INLINE_TABLE.
nsIFrame* geometricParent = aParentFrame;
if (isAbsolutelyPositioned) {
aParentFrame = aState.mAbsoluteItems.containingBlock;
}
else if (isFixedPositioned) {
aParentFrame = aState.mFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresShell, aPresContext, aState, aContent, geometricParent, aStyleContext,
newFrame, mathTableCreator);
// Note: table construction function takes care of initializing the frame,
// processing children, and setting the initial child list
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 table frame to the flow
aFrameItems.AddChild(newFrame);
}
return rv;
}
else if (aTag == nsMathMLAtoms::mtd_) {
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresShell, aPresContext, aState, aContent, aParentFrame, aStyleContext,
newFrame, ignore, ignore2, mathTableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
// End CONSTRUCTION of MTABLE elements
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 != nsnull) {
// If the frame is a replaced element, then set the frame state bit
if (isReplaced) {
nsFrameState state;
newFrame->GetFrameState(&state);
newFrame->SetFrameState(state | NS_FRAME_REPLACED_ELEMENT);
}
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(aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Add the new frame to our list of frame items.
aFrameItems.AddChild(newFrame);
// Process the child content if requested
nsFrameItems childItems;
if (processChildren) {
rv = ProcessChildren(aPresShell, aPresContext, aState, aContent, newFrame, PR_TRUE,
childItems, PR_FALSE);
}
// 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);
}
}
return rv;
}
#endif // MOZ_MATHML
nsresult
nsCSSFrameConstructor::ConstructFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsFrameItems& aFrameItems)
{
NS_PRECONDITION(nsnull != aParentFrame, "no parent frame");
nsresult rv;
// Get the element's tag
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(*getter_AddRefs(tag));
nsCOMPtr<nsIStyleContext> styleContext;
rv = ResolveStyleContext(aPresContext, aParentFrame, aContent, tag, getter_AddRefs(styleContext));
if (NS_SUCCEEDED(rv)) {
// Pre-check for display "none" - if we find that, don't create
// any frame at all
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
aState.mFrameManager->SetUndisplayedContent(aContent, styleContext);
}
else {
nsIFrame* lastChild = aFrameItems.lastChild;
// Handle specific frame types
rv = ConstructFrameByTag(aPresShell, aPresContext, aState, aContent, aParentFrame,
tag, styleContext, aFrameItems);
#ifdef INCLUDE_XUL
// 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,
tag, styleContext, aFrameItems, haltProcessing);
if (haltProcessing) {
return rv;
}
}
#endif
// MathML Mod - RBS
#ifdef MOZ_MATHML
if (NS_SUCCEEDED(rv) && ((nsnull == aFrameItems.childList) ||
(lastChild == aFrameItems.lastChild))) {
rv = ConstructMathMLFrame(aPresShell, aPresContext, aState, aContent, aParentFrame,
tag, 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,
aParentFrame, styleContext, aFrameItems);
}
}
}
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ReconstructDocElementHierarchy(nsIPresContext* aPresContext)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (nsnull != mDocument) {
nsCOMPtr<nsIContent> rootContent(dont_AddRef(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();
if (docElementFrame) {
nsIFrame* docParentFrame;
docElementFrame->GetParent(&docParentFrame);
if (docParentFrame) {
// Remove the old document element hieararchy
rv = state.mFrameManager->RemoveFrame(aPresContext, *shell,
docParentFrame, nsnull,
docElementFrame);
// XXX Remove any existing fixed items...
if (NS_SUCCEEDED(rv)) {
// Create the new document element hierarchy
nsIFrame* newChild;
nsCOMPtr<nsIStyleContext> rootPseudoStyle;
docParentFrame->GetStyleContext(getter_AddRefs(rootPseudoStyle));
rv = ConstructDocElementFrame(shell, aPresContext, state, rootContent,
docParentFrame, rootPseudoStyle,
newChild);
if (NS_SUCCEEDED(rv)) {
rv = state.mFrameManager->InsertFrames(aPresContext, *shell,
docParentFrame, nsnull,
nsnull, newChild);
// Tell the fixed containing block about its 'fixed' frames
if (state.mFixedItems.childList) {
state.mFrameManager->InsertFrames(aPresContext, *shell,
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
// nsScrollFrame 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);
if (nsnull != listFrame) {
listFrame->FirstChild(aPresContext, nsnull, &frame);
}
} else {
res = frame->QueryInterface(NS_GET_IID(nsIListControlFrame),
(void**)&listFrame);
if (NS_SUCCEEDED(res) && listFrame) {
frame->FirstChild(aPresContext, nsnull, &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->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
// 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(nsIScrollableFrame::GetIID(),
(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->GetParent(&frame)) {
const nsStylePosition* position;
// Is it positioned?
frame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if ((position->mPosition == NS_STYLE_POSITION_ABSOLUTE) ||
(position->mPosition == NS_STYLE_POSITION_RELATIVE)) {
const nsStyleDisplay* display;
// If it's a table then ignore it, because for the time being tables
// are not containers for absolutely positioned child frames
frame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
if (display->mDisplay != NS_STYLE_DISPLAY_TABLE) {
nsIAtom* frameType;
frame->GetFrameType(&frameType);
if (nsLayoutAtoms::scrollFrame == frameType) {
// We want the scrolled frame, not the scroll frame
nsIFrame* scrolledFrame;
frame->FirstChild(aPresContext, nsnull, &scrolledFrame);
NS_RELEASE(frameType);
if (scrolledFrame) {
scrolledFrame->GetFrameType(&frameType);
if (nsLayoutAtoms::areaFrame == frameType) {
containingBlock = scrolledFrame;
}
}
} else if ((nsLayoutAtoms::areaFrame == frameType) ||
(nsLayoutAtoms::positionedInlineFrame == frameType)) {
containingBlock = frame;
}
NS_RELEASE(frameType);
}
}
// See if we found a containing block
if (containingBlock) {
break;
}
}
// If we didn't find an absolutely positioned containing block, then use the
// initial containing block
if (!containingBlock) {
containingBlock = mInitialContainingBlock;
}
return containingBlock;
}
nsIFrame*
nsCSSFrameConstructor::GetFloaterContainingBlock(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->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if ((NS_STYLE_DISPLAY_BLOCK == display->mDisplay) ||
(NS_STYLE_DISPLAY_LIST_ITEM == display->mDisplay)) {
break;
}
else if (NS_STYLE_DISPLAY_INLINE == display->mDisplay) {
const nsStylePosition* position;
containingBlock->GetStyleData(eStyleStruct_Position,
(const nsStyleStruct*&)position);
if ((NS_STYLE_FLOAT_NONE != display->mFloats) ||
(position->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->GetParent(&containingBlock);
}
// If we didn't find a containing block, then use the initial
// containing block
if (nsnull == containingBlock) {
containingBlock = mInitialContainingBlock;
}
return containingBlock;
}
// Helper function to determine whether a given frame is generated content
// for the specified content object. Returns PR_TRUE if the frame is associated
// with generated content and PR_FALSE otherwise
static inline PRBool
IsGeneratedContentFor(nsIContent* aContent, nsIFrame* aFrame, nsIAtom* aPseudoElement)
{
NS_PRECONDITION(aFrame, "null frame pointer");
nsFrameState state;
PRBool result = PR_FALSE;
// First check the frame state bit
aFrame->GetFrameState(&state);
if (state & NS_FRAME_GENERATED_CONTENT) {
nsIContent* content;
// Check that it has the same content pointer
aFrame->GetContent(&content);
if (content == aContent) {
nsIStyleContext* styleContext;
nsIAtom* pseudoType;
// See if the pseudo element type matches
aFrame->GetStyleContext(&styleContext);
styleContext->GetPseudoType(pseudoType);
result = (pseudoType == aPseudoElement);
NS_RELEASE(styleContext);
NS_IF_RELEASE(pseudoType);
}
NS_IF_RELEASE(content);
}
return result;
}
// 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)
{
nsIFrame* firstChild;
aParentFrame->FirstChild(aPresContext, nsnull, &firstChild);
nsFrameList frames(firstChild);
nsIFrame* lastChild = frames.LastChild();
// See if the parent has an :after pseudo-element
if (lastChild && IsGeneratedContentFor(aContainer, lastChild, nsCSSAtoms::afterPseudo)) {
// Insert the frames before the :after pseudo-element
return aFrameManager->InsertFrames(aPresContext, *aPresShell, aParentFrame,
nsnull, frames.GetPrevSiblingFor(lastChild),
aFrameList);
}
nsresult rv = NS_OK;
// a col group or col appended to a table may result in an insert rather than an append
nsIAtom* parentType;
aParentFrame->GetFrameType(&parentType);
if (nsLayoutAtoms::tableFrame == parentType) {
nsTableFrame* tableFrame = (nsTableFrame *)aParentFrame;
nsIAtom* childType;
aFrameList->GetFrameType(&childType);
if (nsLayoutAtoms::tableColFrame == childType) {
// table column
nsIFrame* parentFrame = aParentFrame;
aFrameList->GetParent(&parentFrame);
NS_RELEASE(childType);
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, 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(aPresContext, *aPresShell, aParentFrame,
nsLayoutAtoms::colGroupList, aFrameList);
}
else {
rv = aFrameManager->InsertFrames(aPresContext, *aPresShell, aParentFrame,
nsLayoutAtoms::colGroupList, prevSibling, aFrameList);
}
}
else if (nsLayoutAtoms::tableCaptionFrame == childType) {
// table caption
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, aParentFrame,
nsLayoutAtoms::captionList, aFrameList);
}
else {
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, aParentFrame,
nsnull, aFrameList);
}
NS_IF_RELEASE(childType);
}
else {
// Append the frames to the end of the parent's child list
rv = aFrameManager->AppendFrames(aPresContext, *aPresShell, aParentFrame,
GetChildListFor(aFrameList), aFrameList);
}
NS_IF_RELEASE(parentType);
return rv;
}
static nsIFrame*
FindPreviousSibling(nsIPresShell* aPresShell,
nsIContent* aContainer,
PRInt32 aIndexInContainer)
{
nsIFrame* prevSibling = nsnull;
// Note: not all content objects are associated with a frame (e.g., if their
// 'display' type is 'hidden') so keep looking until we find a previous frame
for (PRInt32 i = aIndexInContainer - 1; i >= 0; i--) {
nsCOMPtr<nsIContent> precedingContent;
aContainer->ChildAt(i, *getter_AddRefs(precedingContent));
aPresShell->GetPrimaryFrameFor(precedingContent, &prevSibling);
if (nsnull != prevSibling) {
// The frame may have a next-in-flow. Get the last-in-flow
nsIFrame* nextInFlow;
do {
prevSibling->GetNextInFlow(&nextInFlow);
if (nsnull != nextInFlow) {
prevSibling = nextInFlow;
}
} while (nsnull != nextInFlow);
// Did we really get the *right* frame?
const nsStyleDisplay* display;
prevSibling->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if (display->IsFloating()) {
// Nope. Get the place-holder instead
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(prevSibling, &placeholderFrame);
NS_ASSERTION(nsnull != placeholderFrame, "yikes");
prevSibling = placeholderFrame;
}
break;
}
}
return prevSibling;
}
static nsIFrame*
FindNextSibling(nsIPresShell* aPresShell,
nsIContent* aContainer,
PRInt32 aIndexInContainer)
{
nsIFrame* nextSibling = nsnull;
// Note: not all content objects are associated with a frame (e.g., if their
// 'display' type is 'hidden') so keep looking until we find a previous frame
PRInt32 count;
aContainer->ChildCount(count);
for (PRInt32 i = aIndexInContainer + 1; i < count; i++) {
nsCOMPtr<nsIContent> nextContent;
aContainer->ChildAt(i, *getter_AddRefs(nextContent));
aPresShell->GetPrimaryFrameFor(nextContent, &nextSibling);
if (nsnull != nextSibling) {
// The frame may have a next-in-flow. Get the first-in-flow
nsIFrame* prevInFlow;
do {
nextSibling->GetPrevInFlow(&prevInFlow);
if (nsnull != prevInFlow) {
nextSibling = prevInFlow;
}
} while (nsnull != prevInFlow);
// Did we really get the *right* frame?
const nsStyleDisplay* display;
nextSibling->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if (display->IsFloating()) {
// Nope. Get the place-holder instead
nsIFrame* placeholderFrame;
aPresShell->GetPlaceholderFrameFor(nextSibling, &placeholderFrame);
NS_ASSERTION(nsnull != placeholderFrame, "yikes");
nextSibling = placeholderFrame;
}
break;
}
}
return nextSibling;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentAppended(nsIPresContext* aPresContext,
nsIContent* aContainer,
PRInt32 aNewIndexInContainer)
{
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentAppended container=%p index=%d\n",
aContainer, aNewIndexInContainer);
if (gReallyNoisyContentUpdates && aContainer) {
aContainer->List(stdout, 0);
}
}
#endif
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
#ifdef INCLUDE_XUL
if (aContainer) {
nsCOMPtr<nsIAtom> tag;
aContainer->GetTag(*getter_AddRefs(tag));
if (tag && (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem)) {
// Walk up to the outermost tree row group frame and tell it that
// content was added.
nsCOMPtr<nsIContent> parent;
nsCOMPtr<nsIContent> child = dont_QueryInterface(aContainer);
child->GetParent(*getter_AddRefs(parent));
while (parent) {
parent->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::tree)
break;
child = parent;
child->GetParent(*getter_AddRefs(parent));
}
if (parent) {
// We found it. Get the primary frame.
nsIFrame* outerFrame = GetFrameFor(shell, aPresContext, child);
// Convert to a tree row group frame.
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)outerFrame;
if (treeRowGroup) {
// Get the primary frame for the parent of the child that's being added.
nsIFrame* innerFrame = GetFrameFor(shell, aPresContext, aContainer);
// See if there's a previous sibling.
nsIFrame* prevSibling = FindPreviousSibling(shell,
aContainer,
aNewIndexInContainer);
// This needs to really be a previous sibling.
if (prevSibling && aNewIndexInContainer > 0) {
nsCOMPtr<nsIContent> prevContent;
nsCOMPtr<nsIContent> frameContent;
aContainer->ChildAt(aNewIndexInContainer-1, *getter_AddRefs(prevContent));
prevSibling->GetContent(getter_AddRefs(frameContent));
if (frameContent.get() != prevContent.get())
prevSibling = nsnull;
}
if (prevSibling || (innerFrame && aNewIndexInContainer == 0)) {
// We're onscreen. Make sure a full reflow happens.
treeRowGroup->OnContentAdded(aPresContext);
}
else {
// We're going to be offscreen.
treeRowGroup->ReflowScrollbar(aPresContext);
}
return NS_OK;
}
}
}
}
#endif // INCLUDE_XUL
// Get the frame associated with the content
nsIFrame* parentFrame = GetFrameFor(shell, aPresContext, aContainer);
if (nsnull != parentFrame) {
// If the frame we are manipulating is a special frame 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.
if (IsFrameSpecial(aPresContext, parentFrame)) {
// 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 propogated 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::ContentAppended: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, parentFrame);
}
// Get the parent frame's last-in-flow
nsIFrame* nextInFlow = parentFrame;
while (nsnull != nextInFlow) {
parentFrame->GetNextInFlow(&nextInFlow);
if (nsnull != nextInFlow) {
parentFrame = nextInFlow;
}
}
// 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;
}
// Create some new frames
PRInt32 count;
nsIFrame* firstAppendedFrame = nsnull;
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, parentFrame),
GetFloaterContainingBlock(aPresContext, parentFrame),
nsnull);
// See if the containing block has :first-letter style applied.
PRBool haveFirstLetterStyle, haveFirstLineStyle;
nsIFrame* containingBlock = state.mFloatedItems.containingBlock;
nsCOMPtr<nsIContent> blockContent;
nsCOMPtr<nsIStyleContext> blockSC;
containingBlock->GetStyleContext(getter_AddRefs(blockSC));
containingBlock->GetContent(getter_AddRefs(blockContent));
HaveSpecialBlockStyle(aPresContext, blockContent, blockSC,
&haveFirstLetterStyle,
&haveFirstLineStyle);
if (haveFirstLetterStyle) {
// Before we get going, remove the current letter frames
RemoveLetterFrames(aPresContext, state.mPresShell,
state.mFrameManager, containingBlock);
}
PRInt32 i;
aContainer->ChildCount(count);
for (i = aNewIndexInContainer; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
aContainer->ChildAt(i, *getter_AddRefs(childContent));
// Construct a child frame
ConstructFrame(shell, aPresContext, state, childContent, parentFrame, 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);
}
// Adjust parent frame for table inner/outer frame. We need to do
// this here because we need both the parent frame and the
// constructed frame
nsresult result = NS_OK;
nsIFrame* adjustedParentFrame = parentFrame;
firstAppendedFrame = frameItems.childList;
if (nsnull != firstAppendedFrame) {
const nsStyleDisplay* firstAppendedFrameDisplay;
firstAppendedFrame->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct *&)firstAppendedFrameDisplay);
result = GetAdjustedParentFrame(aPresContext, parentFrame,
firstAppendedFrameDisplay->mDisplay,
adjustedParentFrame);
}
// 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, adjustedParentFrame,
frameItems.childList)) {
return NS_OK;
}
}
// Append the flowed frames to the principal child list
AppendFrames(aPresContext, shell, state.mFrameManager, aContainer,
adjustedParentFrame, firstAppendedFrame);
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
state.mFixedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
state.mFloatedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
// 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) {
nsCOMPtr<nsIContent> childContent;
aContainer->ChildAt(aNewIndexInContainer, *getter_AddRefs(childContent));
if (childContent) {
RemoveDummyFrameFromSelect(aPresContext, shell, aContainer,
childContent, sel);
}
}
}
return NS_OK;
}
nsresult
nsCSSFrameConstructor::RemoveDummyFrameFromSelect(nsIPresContext* aPresContext,
nsIPresShell * aPresShell,
nsIContent* aContainer,
nsIContent* aChild,
nsIDOMHTMLSelectElement * aSelectElement)
{
//check to see if there is one item,
// meaning we need to remove the dummy frame
PRUint32 numOptions = 0;
nsresult result = aSelectElement->GetLength(&numOptions);
if (NS_SUCCEEDED(result)) {
if (1 == numOptions) {
nsIFrame* parentFrame;
nsIFrame* childFrame;
// Get the childFrame for the added child (option)
// then get the child's parent frame which should be an area frame
aPresShell->GetPrimaryFrameFor(aChild, &childFrame);
if (nsnull != childFrame) {
childFrame->GetParent(&parentFrame);
// Now loop through all the child looking fr the frame whose content
// is equal to the select element's content
// this is because when gernated content is created it stuff the parent content
// pointer into the generated frame, so in this case it has the select content
parentFrame->FirstChild(aPresContext, nsnull, &childFrame);
nsCOMPtr<nsIContent> selectContent = do_QueryInterface(aSelectElement);
while (nsnull != childFrame) {
nsIContent * content;
childFrame->GetContent(&content);
// Found the dummy frame so get the FrameManager and
// delete/remove the dummy frame
if (selectContent.get() == content) {
nsCOMPtr<nsIFrameManager> frameManager;
aPresShell->GetFrameManager(getter_AddRefs(frameManager));
frameManager->RemoveFrame(aPresContext, *aPresShell, parentFrame, nsnull, childFrame);
NS_IF_RELEASE(content);
return NS_OK;
}
NS_IF_RELEASE(content);
childFrame->GetNextSibling(&childFrame);
}
}
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentInserted(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer,
nsILayoutHistoryState* aFrameState)
{
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted container=%p child=%p index=%d\n",
aContainer, aChild, aIndexInContainer);
if (gReallyNoisyContentUpdates) {
(aContainer ? aContainer : aChild)->List(stdout, 0);
}
}
#endif
#ifdef INCLUDE_XUL
if (aContainer) {
nsCOMPtr<nsIAtom> tag;
aContainer->GetTag(*getter_AddRefs(tag));
if (tag && (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem)) {
// Walk up to the outermost tree row group frame and tell it that
// content was added.
nsCOMPtr<nsIContent> parent;
nsCOMPtr<nsIContent> child = dont_QueryInterface(aContainer);
child->GetParent(*getter_AddRefs(parent));
while (parent) {
parent->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::tree)
break;
child = parent;
child->GetParent(*getter_AddRefs(parent));
}
if (parent) {
// We found it. Get the primary frame.
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* outerFrame = GetFrameFor(shell, aPresContext, child);
// Convert to a tree row group frame.
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)outerFrame;
if (treeRowGroup) {
// Get the primary frame for the parent of the child that's being added.
nsIFrame* innerFrame = GetFrameFor(shell, aPresContext, aContainer);
// See if there's a previous sibling.
nsIFrame* prevSibling = FindPreviousSibling(shell,
aContainer,
aIndexInContainer);
if (prevSibling || innerFrame) {
// We're onscreen, but because of the fact that we can be called to
// "kill" a displayed frame (e.g., when you close a tree node), we
// have to see if this slaying is taking place. If so, then we don't
// really want to do anything. Instead we need to add our node to
// the undisplayed content list so that the style system will know
// to check it for subsequent display changes (e.g., when you next
// reopen).
nsCOMPtr<nsIStyleContext> styleContext;
nsCOMPtr<nsIAtom> tagName;
aChild->GetTag(*getter_AddRefs(tagName));
ResolveStyleContext(aPresContext, innerFrame, aChild, tagName, getter_AddRefs(styleContext));
// Pre-check for display "none" - if we find that, don't reflow at all.
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, innerFrame),
GetFloaterContainingBlock(aPresContext, innerFrame),
aFrameState);
state.mFrameManager->SetUndisplayedContent(aChild, styleContext);
return NS_OK;
}
// Good call. Make sure a full reflow happens.
nsIFrame* nextSibling = FindNextSibling(shell, aContainer, aIndexInContainer);
if(!nextSibling)
treeRowGroup->OnContentAdded(aPresContext);
else {
nsIFrame* frame = GetFrameFor(shell, aPresContext, aContainer);
nsTreeRowGroupFrame* frameTreeRowGroup = (nsTreeRowGroupFrame*)frame;
if(frameTreeRowGroup)
frameTreeRowGroup->OnContentInserted(aPresContext, nextSibling, aIndexInContainer);
}
}
else {
// We're going to be offscreen.
treeRowGroup->ReflowScrollbar(aPresContext);
}
return NS_OK;
}
}
}
}
#endif // INCLUDE_XUL
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
// If we have a null parent, then this must be the document element
// being inserted
if (nsnull == aContainer) {
NS_PRECONDITION(nsnull == mInitialContainingBlock, "initial containing block already created");
nsIContent* docElement = mDocument->GetRootContent();
// Get the style context of the containing block frame
nsCOMPtr<nsIStyleContext> containerStyle;
mDocElementContainingBlock->GetStyleContext(getter_AddRefs(containerStyle));
// 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);
NS_IF_RELEASE(docElement);
// 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);
}
} else {
// Find the frame that precedes the insertion point.
nsIFrame* prevSibling = FindPreviousSibling(shell, aContainer, aIndexInContainer);
nsIFrame* nextSibling = nsnull;
PRBool isAppend = PR_FALSE;
// If there is no previous sibling, then find the frame that follows
if (nsnull == prevSibling) {
nextSibling = FindNextSibling(shell, aContainer, aIndexInContainer);
}
// Get the geometric parent. Use the prev sibling if we have it;
// otherwise use the next sibling
nsIFrame* parentFrame;
if (nsnull != prevSibling) {
prevSibling->GetParent(&parentFrame);
}
else if (nextSibling) {
nextSibling->GetParent(&parentFrame);
}
else {
// No previous or next sibling so treat this like an appended frame.
isAppend = PR_TRUE;
parentFrame = GetFrameFor(shell, aPresContext, aContainer);
if (parentFrame) {
// 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;
}
}
}
// Construct a new frame
if (nsnull != parentFrame) {
// If the frame we are manipulating is a special frame then do
// something different instead of just inserting newly created
// frames.
if (IsFrameSpecial(aPresContext, parentFrame)) {
// 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 propogated 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::ContentInserted: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, parentFrame);
}
nsFrameItems frameItems;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, parentFrame),
GetFloaterContainingBlock(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;
nsCOMPtr<nsIStyleContext> blockSC;
nsCOMPtr<nsIContent> blockContent;
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->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)parentDisplay);
// 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
containingBlock->GetStyleContext(getter_AddRefs(blockSC));
containingBlock->GetContent(getter_AddRefs(blockContent));
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->GetParent(&parentFrame);
}
// Remove the old letter frames before doing the insertion
RemoveLetterFrames(aPresContext, state.mPresShell,
state.mFrameManager,
state.mFloatedItems.containingBlock);
}
}
// If the frame we are manipulating is a special inline frame
// then do something different instead of just inserting newly
// created frames.
if (IsFrameSpecial(state.mFrameManager, parentFrame)) {
// 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 propogated 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.
nsCOMPtr<nsIContent> parentContainer;
blockContent->GetParent(*getter_AddRefs(parentContainer));
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentInserted: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special inline\n");
printf(" ==> blockContent=%p, parentContainer=%p\n",
blockContent.get(), parentContainer.get());
}
#endif
if (parentContainer) {
PRInt32 ix;
parentContainer->IndexOf(blockContent, ix);
ContentReplaced(aPresContext, parentContainer, blockContent, blockContent, ix);
}
else {
// XXX uh oh. the block that needs reworking has no parent...
}
return NS_OK;
}
rv = ConstructFrame(shell, aPresContext, state, aChild, parentFrame, 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) && (nsnull != newFrame)) {
// Notify the parent frame
if (isAppend) {
rv = 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 && IsGeneratedContentFor(aContainer, firstChild, nsCSSAtoms::beforePseudo)) {
// Insert the new frames after the :before pseudo-element
prevSibling = firstChild;
}
}
// check for a table caption which goes on an additional child list
nsIAtom* childList = GetChildListFor(newFrame);
rv = state.mFrameManager->InsertFrames(aPresContext, *shell,
parentFrame,
childList, prevSibling,
newFrame);
}
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
rv = state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
rv = state.mFixedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
rv = state.mFloatedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
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;
nsresult result = aContainer->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
RemoveDummyFrameFromSelect(aPresContext, shell, aContainer, aChild, selectElement);
}
}
return rv;
}
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);
if (NS_OK == res) {
res = ContentInserted(aPresContext, aContainer,
aNewChild, aIndexInContainer, nsnull);
}
return res;
}
// Returns PR_TRUE if aAncestorFrame is an ancestor frame of aFrame
static PRBool
IsAncestorFrame(nsIFrame* aFrame, nsIFrame* aAncestorFrame)
{
nsIFrame* parentFrame;
aFrame->GetParent(&parentFrame);
while (parentFrame) {
if (parentFrame == aAncestorFrame) {
return PR_TRUE;
}
parentFrame->GetParent(&parentFrame);
}
return PR_FALSE;
}
/**
* Called to delete a frame subtree. 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 delete
* the out-of-flow frame as well
*
* 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,
nsIFrame* aRemovedFrame,
nsIFrame* aFrame)
{
NS_PRECONDITION(aFrameManager, "no frame manager");
// Remove the mapping from the content object to its frame
nsCOMPtr<nsIContent> content;
aFrame->GetContent(getter_AddRefs(content));
aFrameManager->SetPrimaryFrameFor(content, nsnull);
aFrameManager->ClearAllUndisplayedContentIn(content);
// Walk aFrame's child frames
nsIAtom* childListName = nsnull;
PRInt32 childListIndex = 0;
do {
// Recursively walk aFrame's child frames looking for placeholder frames
nsIFrame* childFrame;
aFrame->FirstChild(aPresContext, childListName, &childFrame);
while (childFrame) {
nsIAtom* frameType;
PRBool isPlaceholder;
// See if it's a placeholder frame
childFrame->GetFrameType(&frameType);
isPlaceholder = (nsLayoutAtoms::placeholderFrame == frameType);
NS_IF_RELEASE(frameType);
if (isPlaceholder) {
// 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->SetPlaceholderFrameFor(outOfFlowFrame, nsnull);
// Recursively find and delete any of its out-of-flow frames, and remove
// the mapping from content objects to frames
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager, aRemovedFrame,
outOfFlowFrame);
// Don't delete the out-of-flow frame if aRemovedFrame is one of its
// ancestor frames, because when aRemovedFrame is deleted it will delete
// its child frames including this out-of-flow frame
if (!IsAncestorFrame(outOfFlowFrame, aRemovedFrame)) {
// Get the out-of-flow frame's parent
nsIFrame* parentFrame;
outOfFlowFrame->GetParent(&parentFrame);
// Get the child list name for the out-of-flow frame
nsIAtom* listName;
GetChildListNameFor(aPresContext, parentFrame, outOfFlowFrame, &listName);
// Ask the parent to delete the out-of-flow frame
aFrameManager->RemoveFrame(aPresContext, *aPresShell, parentFrame,
listName, outOfFlowFrame);
NS_IF_RELEASE(listName);
}
} else {
// Recursively find and delete any of its out-of-flow frames, and remove
// the mapping from content objects to frames
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager, aRemovedFrame,
childFrame);
}
// Get the next sibling child frame
childFrame->GetNextSibling(&childFrame);
}
// Look for any additional named child lists
NS_IF_RELEASE(childListName);
aFrame->GetAdditionalChildListName(childListIndex++, &childListName);
} while (childListName);
return NS_OK;
}
/**
* Called to delete a frame subtree. 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
if (aFrameManager) {
while (aFrame) {
DoDeletingFrameSubtree(aPresContext, aPresShell, aFrameManager,
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);
}
}
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)
{
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::ContentRemoved container=%p child=%p index=%d\n",
aContainer, 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
nsresult result = NS_ERROR_FAILURE;
if (aContainer && childFrame) {
nsCOMPtr<nsIDOMHTMLSelectElement> selectElement;
result = aContainer->QueryInterface(NS_GET_IID(nsIDOMHTMLSelectElement),
(void**)getter_AddRefs(selectElement));
if (NS_SUCCEEDED(result) && selectElement) {
PRUint32 numOptions = 0;
result = selectElement->GetLength(&numOptions);
nsIFrame * selectFrame; // XXX temp needed only native controls
shell->GetPrimaryFrameFor(aContainer, &selectFrame);// XXX temp needed only native controls
// For "select" add the pseudo frame after the last item is deleted
nsIFrame* parentFrame = nsnull;
childFrame->GetParent(&parentFrame);
if (parentFrame == selectFrame) { // XXX temp needed only native controls
return NS_ERROR_FAILURE;
}
if (NS_SUCCEEDED(result) && shell && parentFrame && 1 == numOptions) {
nsIStyleContext* styleContext = nsnull;
nsIFrame* generatedFrame = nsnull;
nsFrameConstructorState state(aPresContext, nsnull, nsnull, nsnull, nsnull);
//shell->GetPrimaryFrameFor(aContainer, &contentFrame);
parentFrame->GetStyleContext(&styleContext);
if (CreateGeneratedContentFrame(shell, aPresContext, state, parentFrame, aContainer,
styleContext, nsLayoutAtoms::dummyOptionPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
frameManager->AppendFrames(aPresContext, *shell, parentFrame, nsnull, generatedFrame);
}
}
}
}
#ifdef INCLUDE_XUL
if (aContainer) {
nsCOMPtr<nsIAtom> tag;
aContainer->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem) {
if (childFrame) {
// Convert to a tree row group frame.
nsIFrame* parentFrame;
childFrame->GetParent(&parentFrame);
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)parentFrame;
if (treeRowGroup) {
treeRowGroup->OnContentRemoved(aPresContext, childFrame, aIndexInContainer);
return NS_OK;
}
}
else {
// Ensure that we notify the outermost row group that the item
// has been removed (so that we can update the scrollbar state).
// Walk up to the outermost tree row group frame and tell it that
// the scrollbar thumb should be updated.
nsCOMPtr<nsIContent> parent;
nsCOMPtr<nsIContent> child = dont_QueryInterface(aContainer);
child->GetParent(*getter_AddRefs(parent));
while (parent) {
parent->GetTag(*getter_AddRefs(tag));
if (tag.get() == nsXULAtoms::tree)
break;
child = parent;
child->GetParent(*getter_AddRefs(parent));
}
if (parent) {
// We found it. Get the primary frame.
nsIFrame* parentFrame = GetFrameFor(shell, aPresContext, child);
// Convert to a tree row group frame.
nsTreeRowGroupFrame* treeRowGroup = (nsTreeRowGroupFrame*)parentFrame;
if (treeRowGroup) {
treeRowGroup->ReflowScrollbar(aPresContext);
return NS_OK;
}
}
}
}
}
#endif // INCLUDE_XUL
if (childFrame) {
// Get the childFrame's parent frame
nsIFrame* parentFrame;
childFrame->GetParent(&parentFrame);
// If the frame we are manipulating is a special frame then do
// something different instead of just inserting newly created
// frames.
if (IsFrameSpecial(aPresContext, parentFrame)) {
// 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 propogated 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: parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" is special\n");
}
#endif
return ReframeContainingBlock(aPresContext, parentFrame);
}
// Examine the containing-block for the removed content and see if
// :first-letter style applies.
nsIFrame* containingBlock =
GetFloaterContainingBlock(aPresContext, parentFrame);
nsCOMPtr<nsIStyleContext> blockSC;
containingBlock->GetStyleContext(getter_AddRefs(blockSC));
nsCOMPtr<nsIContent> blockContent;
containingBlock->GetContent(getter_AddRefs(blockContent));
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;
}
childFrame->GetParent(&parentFrame);
#ifdef NOISY_FIRST_LETTER
printf(" ==> revised parentFrame=");
nsFrame::ListTag(stdout, parentFrame);
printf(" childFrame=");
nsFrame::ListTag(stdout, childFrame);
printf("\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
const nsStyleDisplay* display;
childFrame->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if (display->IsFloating()) {
#ifdef NOISY_FIRST_LETTER
printf(" ==> child display is still floating!\n");
#endif
// Get the placeholder frame
nsIFrame* placeholderFrame;
frameManager->GetPlaceholderFrameFor(childFrame, &placeholderFrame);
// Remove the mapping from the frame to its placeholder
frameManager->SetPlaceholderFrameFor(childFrame, nsnull);
// 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 floater first (which gets rid of the lines
// reference to the placeholder and floater) and then remove the
// placeholder
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
nsLayoutAtoms::floaterList, childFrame);
// Remove the placeholder frame first (XXX second for now) (so
// that it doesn't retain a dangling pointer to memory)
if (nsnull != placeholderFrame) {
placeholderFrame->GetParent(&parentFrame);
DeletingFrameSubtree(aPresContext, shell, frameManager, placeholderFrame);
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
nsnull, placeholderFrame);
}
}
else {
// See if it's absolutely or fixed positioned
const nsStylePosition* position;
childFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if (position->IsAbsolutelyPositioned()) {
// Get the placeholder frame
nsIFrame* placeholderFrame;
frameManager->GetPlaceholderFrameFor(childFrame, &placeholderFrame);
// Remove the mapping from the frame to its placeholder
frameManager->SetPlaceholderFrameFor(childFrame, nsnull);
// Generate two notifications. First for the absolutely positioned
// frame
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
(NS_STYLE_POSITION_FIXED == position->mPosition) ?
nsLayoutAtoms::fixedList : nsLayoutAtoms::absoluteList, childFrame);
// Now the placeholder frame
if (nsnull != placeholderFrame) {
placeholderFrame->GetParent(&parentFrame);
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame, nsnull,
placeholderFrame);
}
} else {
// Notify the parent frame that it should delete the frame
nsIAtom* childList = GetChildListFor(childFrame);
rv = frameManager->RemoveFrame(aPresContext, *shell, parentFrame,
childList, childFrame);
}
}
if (mInitialContainingBlock == childFrame) {
mInitialContainingBlock = nsnull;
}
if (haveFLS && mInitialContainingBlock) {
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext,
parentFrame),
GetFloaterContainingBlock(aPresContext,
parentFrame),
nsnull);
RecoverLetterFrames(shell, aPresContext, state, containingBlock);
}
}
return rv;
}
static void
ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIViewManager* aViewManager);
static void
SyncAndInvalidateView(nsIPresContext* aPresContext,
nsIView* aView,
nsIFrame* aFrame,
nsIViewManager* aViewManager)
{
const nsStyleColor* color;
const nsStyleDisplay* disp;
aFrame->GetStyleData(eStyleStruct_Color, (const nsStyleStruct*&) color);
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) disp);
aViewManager->SetViewOpacity(aView, color->mOpacity);
// See if the view should be hidden or visible
PRBool viewIsVisible = PR_TRUE;
PRBool viewHasTransparentContent = (color->mBackgroundFlags &
NS_STYLE_BG_COLOR_TRANSPARENT) == NS_STYLE_BG_COLOR_TRANSPARENT;
if (NS_STYLE_VISIBILITY_COLLAPSE == disp->mVisible) {
viewIsVisible = PR_FALSE;
}
else if (NS_STYLE_VISIBILITY_HIDDEN == disp->mVisible) {
// If it has a widget, hide the view because the widget can't deal with it
nsIWidget* widget = nsnull;
aView->GetWidget(widget);
if (widget) {
viewIsVisible = PR_FALSE;
NS_RELEASE(widget);
}
else {
// If it's a scroll frame, then hide the view. This means that
// child elements can't override their parent's visibility, but
// it's not practical to leave it visible in all cases because
// the scrollbars will be showing
nsIAtom* frameType;
aFrame->GetFrameType(&frameType);
if (frameType == nsLayoutAtoms::scrollFrame) {
viewIsVisible = PR_FALSE;
} else {
// If it's a container element, then leave the view visible, but
// mark it as having transparent content. The reason we need to
// do this is that child elements can override their parent's
// hidden visibility and be visible anyway
nsIFrame* firstChild;
aFrame->FirstChild(aPresContext, nsnull, &firstChild);
if (firstChild) {
// It's not a left frame, so the view needs to be visible, but
// marked as having transparent content
viewHasTransparentContent = PR_TRUE;
} else {
// It's a leaf frame so go ahead and hide the view
viewIsVisible = PR_FALSE;
}
}
NS_IF_RELEASE(frameType);
}
}
// If the frame has visible content that overflows the content area, then we
// need the view marked as having transparent content
if (NS_STYLE_OVERFLOW_VISIBLE == disp->mOverflow) {
nsFrameState frameState;
aFrame->GetFrameState(&frameState);
if (frameState & NS_FRAME_OUTSIDE_CHILDREN) {
viewHasTransparentContent = PR_TRUE;
}
}
if (viewIsVisible) {
aViewManager->SetViewContentTransparency(aView, viewHasTransparentContent);
aViewManager->SetViewVisibility(aView, nsViewVisibility_kShow);
aViewManager->UpdateView(aView, NS_VMREFRESH_NO_SYNC);
}
else {
aViewManager->SetViewVisibility(aView, nsViewVisibility_kHide);
}
}
static void
UpdateViewsForTree(nsIPresContext* aPresContext, nsIFrame* aFrame,
nsIViewManager* aViewManager, nsRect& aBoundsRect)
{
nsIView* view;
aFrame->GetView(aPresContext, &view);
if (view) {
SyncAndInvalidateView(aPresContext, view, aFrame, aViewManager);
}
nsRect bounds;
aFrame->GetRect(bounds);
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) {
nsFrameState childState;
child->GetFrameState(&childState);
if (NS_FRAME_OUT_OF_FLOW != (childState & 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");
ApplyRenderingChangeToTree(aPresContext, outOfFlowFrame, aViewManager);
}
else { // regular frame
nsRect childBounds;
UpdateViewsForTree(aPresContext, child, aViewManager, childBounds);
bounds.UnionRect(bounds, childBounds);
}
NS_IF_RELEASE(frameType);
}
child->GetNextSibling(&child);
}
NS_IF_RELEASE(childList);
aFrame->GetAdditionalChildListName(listIndex++, &childList);
} while (childList);
NS_IF_RELEASE(childList);
aBoundsRect = bounds;
aBoundsRect += parentOffset;
}
static void
ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIViewManager* aViewManager)
{
nsIViewManager* viewManager = aViewManager;
// 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...
if (viewManager) {
NS_ADDREF(viewManager); // add local ref
viewManager->BeginUpdateViewBatch();
}
while (nsnull != 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 = nsnull;
aFrame->GetView(aPresContext, &view);
nsIView* parentView;
if (! view) { // XXX can view have children outside it?
aFrame->GetOffsetFromView(aPresContext, viewOffset, &parentView);
NS_ASSERTION(nsnull != parentView, "no view");
if (! viewManager) {
parentView->GetViewManager(viewManager);
viewManager->BeginUpdateViewBatch();
}
}
else {
if (! viewManager) {
view->GetViewManager(viewManager);
viewManager->BeginUpdateViewBatch();
}
}
UpdateViewsForTree(aPresContext, aFrame, viewManager, invalidRect);
if (! view) { // 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)
const nsStyleSpacing* spacing;
aFrame->GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
nscoord width;
spacing->GetOutlineWidth(width);
if (width > 0) {
invalidRect.Inflate(width, width);
}
nsPoint frameOrigin;
aFrame->GetOrigin(frameOrigin);
invalidRect -= frameOrigin;
invalidRect += viewOffset;
viewManager->UpdateView(parentView, invalidRect, NS_VMREFRESH_NO_SYNC);
}
aFrame->GetNextInFlow(&aFrame);
}
if (viewManager) {
nsCOMPtr<nsIPresShell> presShell;
nsresult rv = aPresContext->GetShell(getter_AddRefs(presShell));
if (NS_SUCCEEDED(rv)) {
PRBool isReflowLocked = PR_FALSE;
presShell->IsReflowLocked(&isReflowLocked);
if (isReflowLocked) {
viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
} else {
viewManager->EndUpdateViewBatch(NS_VMREFRESH_IMMEDIATE);
}
} else {
viewManager->EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC);
}
// viewManager->Composite();
NS_RELEASE(viewManager);
}
}
static void
StyleChangeReflow(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIAtom * aAttribute)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIReflowCommand* reflowCmd;
nsresult rv = NS_NewHTMLReflowCommand(&reflowCmd, aFrame,
nsIReflowCommand::StyleChanged,
nsnull,
aAttribute);
if (NS_SUCCEEDED(rv)) {
shell->AppendReflowCommand(reflowCmd);
NS_RELEASE(reflowCmd);
}
/*
nsFrameState state;
aFrame->GetFrameState(&state);
state |= NS_FRAME_IS_DIRTY;
aFrame->SetFrameState(state);
nsIFrame* parent;
aFrame->GetParent(&parent);
parent->ReflowDirtyChild(shell, aFrame);
*/
}
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 = GetFloaterContainingBlock(aPresContext, frame);
if (block) {
// See if the block has first-letter style applied to it.
nsCOMPtr<nsIContent> blockContent;
block->GetContent(getter_AddRefs(blockContent));
nsCOMPtr<nsIStyleContext> blockSC;
block->GetStyleContext(getter_AddRefs(blockSC));
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(*getter_AddRefs(container));
if (container) {
PRInt32 ix;
container->IndexOf(aContent, ix);
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();
while (0 < count--) {
nsIFrame* frame;
nsIContent* content;
PRInt32 hint;
aChangeList.ChangeAt(count, frame, content, hint);
switch (hint) {
case NS_STYLE_HINT_RECONSTRUCT_ALL:
NS_ERROR("This shouldn't happen");
break;
case NS_STYLE_HINT_FRAMECHANGE:
RecreateFramesForContent(aPresContext, content);
break;
case NS_STYLE_HINT_REFLOW:
StyleChangeReflow(aPresContext, frame, nsnull);
break;
case NS_STYLE_HINT_VISUAL:
ApplyRenderingChangeToTree(aPresContext, frame, nsnull);
break;
case NS_STYLE_HINT_CONTENT:
default:
break;
}
}
aChangeList.Clear();
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentStatesChanged(nsIPresContext* aPresContext,
nsIContent* aContent1,
nsIContent* aContent2)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
NS_ASSERTION(shell, "couldn't get pres shell");
if (shell) {
nsIStyleSet* styleSet;
shell->GetStyleSet(&styleSet);
NS_ASSERTION(styleSet, "couldn't get style set");
if (styleSet) { // test if any style rules exist which are dependent on content state
nsIFrame* primaryFrame1 = nsnull;
nsIFrame* primaryFrame2 = nsnull;
if (aContent1 && (NS_OK == styleSet->HasStateDependentStyle(aPresContext, aContent1))) {
shell->GetPrimaryFrameFor(aContent1, &primaryFrame1);
}
else {
aContent1 = nsnull;
}
if (aContent2 && (aContent2 != aContent1) &&
(NS_OK == styleSet->HasStateDependentStyle(aPresContext, aContent2))) {
shell->GetPrimaryFrameFor(aContent2, &primaryFrame2);
}
else {
aContent2 = nsnull;
}
NS_RELEASE(styleSet);
if (primaryFrame1 && primaryFrame2) { // detect if one is parent of other, skip child
nsIFrame* parent;
primaryFrame1->GetParent(&parent);
while (parent) {
if (parent == primaryFrame2) { // frame2 is frame1's parent, skip frame1
primaryFrame1 = nsnull;
break;
}
parent->GetParent(&parent);
}
if (primaryFrame1) {
primaryFrame2->GetParent(&parent);
while (parent) {
if (parent == primaryFrame1) { // frame1 is frame2's parent, skip frame2
primaryFrame2 = nsnull;
break;
}
parent->GetParent(&parent);
}
}
}
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
if (primaryFrame1) {
nsStyleChangeList changeList1;
nsStyleChangeList changeList2;
PRInt32 frameChange1 = NS_STYLE_HINT_NONE;
PRInt32 frameChange2 = NS_STYLE_HINT_NONE;
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame1,
kNameSpaceID_Unknown, nsnull,
changeList1, NS_STYLE_HINT_NONE, frameChange1);
if ((frameChange1 != NS_STYLE_HINT_RECONSTRUCT_ALL) && (primaryFrame2)) {
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame2,
kNameSpaceID_Unknown, nsnull,
changeList2, NS_STYLE_HINT_NONE, frameChange2);
}
if ((frameChange1 == NS_STYLE_HINT_RECONSTRUCT_ALL) ||
(frameChange2 == NS_STYLE_HINT_RECONSTRUCT_ALL)) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else {
switch (frameChange1) {
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent1);
changeList1.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame1->ContentStateChanged(aPresContext, aContent1, frameChange1);
default:
break;
}
switch (frameChange2) {
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent2);
changeList2.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame2->ContentStateChanged(aPresContext, aContent2, frameChange2);
// then process any children that need it
default:
break;
}
ProcessRestyledFrames(changeList1, aPresContext);
ProcessRestyledFrames(changeList2, aPresContext);
}
}
else if (primaryFrame2) {
nsStyleChangeList changeList;
PRInt32 frameChange = NS_STYLE_HINT_NONE;
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame2,
kNameSpaceID_Unknown, nsnull,
changeList, NS_STYLE_HINT_NONE, frameChange);
switch (frameChange) { // max change needed for top level frames
case NS_STYLE_HINT_RECONSTRUCT_ALL:
result = ReconstructDocElementHierarchy(aPresContext);
changeList.Clear();
break;
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent2);
changeList.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame2->ContentStateChanged(aPresContext, aContent2, frameChange);
// then process any children that need it
default:
break;
}
ProcessRestyledFrames(changeList, aPresContext);
}
else { // no frames, reconstruct for content
if (aContent1) {
result = RecreateFramesForContent(aPresContext, aContent1);
}
if (aContent2) {
result = RecreateFramesForContent(aPresContext, aContent2);
}
}
}
}
return result;
}
NS_IMETHODIMP
nsCSSFrameConstructor::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aContent,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* primaryFrame;
shell->GetPrimaryFrameFor(aContent, &primaryFrame);
#ifdef INCLUDE_XUL
// The following tree widget trap prevents offscreen tree widget
// content from being removed and re-inserted (which is what would
// happen otherwise).
if (!primaryFrame) {
nsCOMPtr<nsIAtom> tag;
aContent->GetTag(*getter_AddRefs(tag));
if (tag && (tag.get() == nsXULAtoms::treechildren ||
tag.get() == nsXULAtoms::treeitem))
return NS_OK;
}
#endif // INCLUDE_XUL
PRBool reconstruct = PR_FALSE;
PRBool restyle = PR_FALSE;
PRBool reframe = PR_FALSE;
#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
if (NS_STYLE_HINT_UNKNOWN == aHint) {
nsIStyledContent* styledContent;
result = aContent->QueryInterface(NS_GET_IID(nsIStyledContent), (void**)&styledContent);
if (NS_OK == result) {
// Get style hint from HTML content object.
styledContent->GetMappedAttributeImpact(aAttribute, aHint);
NS_RELEASE(styledContent);
}
}
switch (aHint) {
default:
case NS_STYLE_HINT_RECONSTRUCT_ALL:
reconstruct = PR_TRUE;
case NS_STYLE_HINT_FRAMECHANGE:
reframe = PR_TRUE;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_UNKNOWN:
case NS_STYLE_HINT_CONTENT:
case NS_STYLE_HINT_AURAL:
restyle = PR_TRUE;
break;
case NS_STYLE_HINT_NONE:
break;
}
// apply changes
if (PR_TRUE == reconstruct) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else if (PR_TRUE == reframe) {
result = RecreateFramesForContent(aPresContext, aContent);
}
else if (PR_TRUE == restyle) {
// If there is no frame then there is no point in re-styling it,
// is there?
if (primaryFrame) {
PRInt32 maxHint = aHint;
nsStyleChangeList changeList;
// put primary frame on list to deal with, re-resolve may update or add next in flows
changeList.AppendChange(primaryFrame, aContent, maxHint);
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
frameManager->ComputeStyleChangeFor(aPresContext, primaryFrame,
aNameSpaceID, aAttribute,
changeList, aHint, maxHint);
switch (maxHint) { // maxHint is hint for primary only
case NS_STYLE_HINT_RECONSTRUCT_ALL:
result = ReconstructDocElementHierarchy(aPresContext);
changeList.Clear();
break;
case NS_STYLE_HINT_FRAMECHANGE:
result = RecreateFramesForContent(aPresContext, aContent);
changeList.Clear();
break;
case NS_STYLE_HINT_REFLOW:
case NS_STYLE_HINT_VISUAL:
case NS_STYLE_HINT_CONTENT:
// let the frame deal with it, since we don't know how to
result = primaryFrame->AttributeChanged(aPresContext, aContent, aNameSpaceID, aAttribute, maxHint);
default:
break;
}
// handle any children (primary may be on list too)
ProcessRestyledFrames(changeList, aPresContext);
}
else { // no frame now, possibly genetate one with new style data
result = RecreateFramesForContent(aPresContext, aContent);
}
}
return result;
}
// Style change notifications
NS_IMETHODIMP
nsCSSFrameConstructor::StyleRuleChanged(nsIPresContext* aPresContext,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule,
PRInt32 aHint)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* frame;
shell->GetRootFrame(&frame);
PRBool reframe = PR_FALSE;
PRBool reflow = PR_FALSE;
PRBool render = PR_FALSE;
PRBool restyle = PR_FALSE;
switch (aHint) {
default:
case NS_STYLE_HINT_UNKNOWN:
case NS_STYLE_HINT_FRAMECHANGE:
reframe = PR_TRUE;
case NS_STYLE_HINT_REFLOW:
reflow = PR_TRUE;
case NS_STYLE_HINT_VISUAL:
render = PR_TRUE;
case NS_STYLE_HINT_CONTENT:
case NS_STYLE_HINT_AURAL:
restyle = PR_TRUE;
break;
case NS_STYLE_HINT_NONE:
break;
}
if (restyle) {
nsIStyleContext* sc;
frame->GetStyleContext(&sc);
sc->RemapStyle(aPresContext);
NS_RELEASE(sc);
}
if (reframe) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else {
// XXX hack, skip the root and scrolling frames
frame->FirstChild(aPresContext, nsnull, &frame);
frame->FirstChild(aPresContext, nsnull, &frame);
if (reflow) {
StyleChangeReflow(aPresContext, frame, nsnull);
}
else if (render) {
ApplyRenderingChangeToTree(aPresContext, frame, nsnull);
}
}
return result;
}
NS_IMETHODIMP
nsCSSFrameConstructor::StyleRuleAdded(nsIPresContext* aPresContext,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
// XXX TBI: should query rule for impact and do minimal work
ReconstructDocElementHierarchy(aPresContext);
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::StyleRuleRemoved(nsIPresContext* aPresContext,
nsIStyleSheet* aStyleSheet,
nsIStyleRule* aStyleRule)
{
// XXX TBI: should query rule for impact and do minimal work
ReconstructDocElementHierarchy(aPresContext);
return NS_OK;
}
// Construct an alternate frame to use when the image can't be rendered
nsresult
nsCSSFrameConstructor::ConstructAlternateImageFrame(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIFrame* aParentFrame,
nsIFrame*& aFrame)
{
nsresult rv;
nsAutoString altText;
// Initialize OUT parameter
aFrame = nsnull;
// The "alt" attribute specifies alternate text that is rendered
// when the image can not be displayed
rv = aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::alt, altText);
if (NS_CONTENT_ATTR_NOT_THERE == rv) {
// If there's no "alt" attribute, then use the value of the "title"
// attribute. Note that this is not the same as a value of ""
rv = aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::title, altText);
}
if (NS_CONTENT_ATTR_NOT_THERE == rv) {
// If there's no "title" attribute, then use the filename minus the
// extension
aContent->GetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::src, altText);
if (altText.Length() > 0) {
// The path is a hierarchical structure of segments. Get the last substring
// in the path
PRInt32 offset = altText.RFindChar('/');
if (offset >= 0) {
altText.Cut(0, offset + 1);
}
// Ignore fragment identifiers ('#' delimiter), query strings ('?'
// delimiter), and anything beginning with ';'
offset = altText.FindCharInSet("#?;");
if (offset >= 0) {
altText.Truncate(offset);
}
// Trim off any extension (including the '.')
offset = altText.RFindChar('.');
if (offset >= 0) {
altText.Truncate(offset);
}
}
}
// Create a text content element for the alternate text
nsCOMPtr<nsIContent> altTextContent;
NS_NewTextNode(getter_AddRefs(altTextContent));
// Set the content's text
nsIDOMCharacterData* domData;
altTextContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
domData->SetData(altText);
NS_RELEASE(domData);
// Set aContent as the parent content and set the document object
nsCOMPtr<nsIDocument> document;
aContent->GetDocument(*getter_AddRefs(document));
altTextContent->SetParent(aContent);
altTextContent->SetDocument(document, PR_TRUE);
// Create either an inline frame, block frame, or area frame
nsIFrame* containerFrame;
PRBool isOutOfFlow = PR_FALSE;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
if (position->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, aParentFrame, aStyleContext, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, containerFrame,
aStyleContext, PR_FALSE);
// If the frame is out-of-flow, then mark it as such
nsFrameState frameState;
containerFrame->GetFrameState(&frameState);
containerFrame->SetFrameState(frameState | NS_FRAME_OUT_OF_FLOW);
// Create a text frame to display the alt-text. It gets a pseudo-element
// style context
nsIFrame* textFrame;
nsIStyleContext* textStyleContext;
NS_NewTextFrame(aPresShell, &textFrame);
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::textPseudo,
aStyleContext, PR_FALSE,
&textStyleContext);
textFrame->Init(aPresContext, altTextContent, containerFrame,
textStyleContext, nsnull);
NS_RELEASE(textStyleContext);
containerFrame->SetInitialChildList(aPresContext, nsnull, textFrame);
// Return the container frame
aFrame = containerFrame;
return rv;
}
#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
NS_IMETHODIMP
nsCSSFrameConstructor::CantRenderReplacedElement(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
nsIFrame* parentFrame;
nsCOMPtr<nsIStyleContext> styleContext;
nsCOMPtr<nsIContent> content;
nsCOMPtr<nsIAtom> tag;
nsresult rv = NS_OK;
aFrame->GetParent(&parentFrame);
aFrame->GetStyleContext(getter_AddRefs(styleContext));
// Get aFrame's content object and the tag name
aFrame->GetContent(getter_AddRefs(content));
NS_ASSERTION(content, "null content object");
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.
nsIFrame* placeholderFrame = nsnull;
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
if (listName) {
presShell->GetPlaceholderFrameFor(aFrame, &placeholderFrame);
}
// Get the previous sibling frame
nsIFrame* firstChild;
parentFrame->FirstChild(aPresContext, listName, &firstChild);
nsFrameList frameList(firstChild);
// See whether it's an IMG or an OBJECT element
if (nsHTMLAtoms::img == tag.get()) {
// It's an IMG element. Try and construct an alternate frame to use when the
// image can't be rendered
nsIFrame* newFrame;
rv = ConstructAlternateImageFrame(aPresShell, aPresContext, content, styleContext,
parentFrame, newFrame);
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIFrameManager> frameManager;
presShell->GetFrameManager(getter_AddRefs(frameManager));
// Replace the old frame with the new frame
// Reset the primary frame mapping
frameManager->SetPrimaryFrameFor(content, newFrame);
if (placeholderFrame) {
// Reuse the existing placeholder frame, and add an association to the
// new frame
frameManager->SetPlaceholderFrameFor(newFrame, placeholderFrame);
}
// Replace the old frame with the new frame
frameManager->ReplaceFrame(aPresContext, *presShell, 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->SetPlaceholderFrameFor(aFrame, nsnull);
// Placeholder frames have a pointer back to the out-of-flow frame.
// Make sure that's correct, too.
((nsPlaceholderFrame*)placeholderFrame)->SetOutOfFlowFrame(newFrame);
// XXX Work around a bug in the block code where the floater won't get
// reflowed unless the line containing the placeholder frame is reflowed...
nsIFrame* placeholderParentFrame;
placeholderFrame->GetParent(&placeholderParentFrame);
placeholderParentFrame->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* floaterContainingBlock;
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
// floater containing block
if (placeholderFrame) {
placeholderFrame->GetParent(&inFlowParent);
}
absoluteContainingBlock = GetAbsoluteContainingBlock(aPresContext, inFlowParent),
floaterContainingBlock = GetFloaterContainingBlock(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::floaterList) {
NS_ASSERTION(floaterContainingBlock == parentFrame,
"wrong floater containing block");
}
#endif
// Now initialize the frame construction state
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
absoluteContainingBlock, floaterContainingBlock, nsnull);
nsFrameItems frameItems;
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
// 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,
inFlowParent, styleContext, frameItems);
if (NS_SUCCEEDED(rv)) {
nsIFrame* newFrame = frameItems.childList;
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->SetPlaceholderFrameFor(aFrame, nsnull);
// 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(aPresContext, *presShell, inFlowParent,
nsnull, placeholderFrame, newFrame);
}
// Replace the primary frame
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::floaterList) {
newFrame = state.mFloatedItems.childList;
state.mFloatedItems.childList = nsnull;
}
state.mFrameManager->ReplaceFrame(aPresContext, *presShell, parentFrame,
listName, aFrame, newFrame);
// Reset the primary frame mapping. Don't assume that
// ConstructFrameByDisplayType() has done this
state.mFrameManager->SetPrimaryFrameFor(content, newFrame);
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
rv = state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *presShell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
rv = state.mFixedItems.containingBlock->AppendFrames(aPresContext, *presShell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
rv = state.mFloatedItems.containingBlock->AppendFrames(aPresContext,
*presShell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
}
} 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,
nsIStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableOuterFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, 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 {
nsIContent* caption;
nsIStyleContext* captionStyle;
const nsStyleDisplay* display;
childFrame->GetContent(&caption);
childFrame->GetStyleContext(&captionStyle);
display = (const nsStyleDisplay*)captionStyle->GetStyleData(eStyleStruct_Display);
NS_ASSERTION(NS_STYLE_DISPLAY_TABLE_CAPTION == display->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, nsnull);
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::floaterList,
state.mFloatedItems.childList);
}
newChildFrames.AddChild(captionFrame);
NS_RELEASE(caption);
NS_RELEASE(captionStyle);
}
NS_IF_RELEASE(tableType);
childFrame->GetNextSibling(&childFrame);
}
// 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,
nsIStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, aContent, aParentFrame, aStyleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
aStyleContext, 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
nsIStyleContext* rowGroupStyle;
const nsStyleDisplay* display;
rowGroupFrame->GetStyleContext(&rowGroupStyle);
display = (const nsStyleDisplay*)rowGroupStyle->GetStyleData(eStyleStruct_Display);
if ((NS_STYLE_DISPLAY_TABLE_HEADER_GROUP == display->mDisplay) ||
(NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP == display->mDisplay)) {
// Replicate the header/footer frame
nsIFrame* headerFooterFrame;
nsFrameItems childItems;
nsIContent* headerFooter;
nsFrameConstructorState state(aPresContext, mFixedContainingBlock,
GetAbsoluteContainingBlock(aPresContext, newFrame),
nsnull, nsnull);
NS_NewTableRowGroupFrame(aPresShell, &headerFooterFrame);
rowGroupFrame->GetContent(&headerFooter);
headerFooterFrame->Init(aPresContext, headerFooter, newFrame,
rowGroupStyle, nsnull);
ProcessChildren(aPresShell, aPresContext, state, headerFooter, headerFooterFrame,
PR_FALSE, childItems, PR_FALSE);
NS_ASSERTION(!state.mFloatedItems.childList, "unexpected floated element");
NS_RELEASE(headerFooter);
headerFooterFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// Table specific initialization
((nsTableRowGroupFrame*)headerFooterFrame)->InitRepeatedFrame
(aPresContext, (nsTableRowGroupFrame*)rowGroupFrame);
// XXX Deal with absolute and fixed frames...
childFrames.AddChild(headerFooterFrame);
}
NS_RELEASE(rowGroupStyle);
// Header and footer must be first, and then the body row groups.
// So if we found a body row group, then stop looking for header and
// footer elements
if (NS_STYLE_DISPLAY_TABLE_ROW_GROUP == display->mDisplay) {
break;
}
// Get the next row group frame
rowGroupFrame->GetNextSibling(&rowGroupFrame);
}
// 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)
{
nsIAtom* frameType;
nsIContent* content;
nsIStyleContext* styleContext;
nsIFrame* newFrame = nsnull;
nsresult rv;
// Use the frame type to determine what type of frame to create
aFrame->GetFrameType(&frameType);
aFrame->GetContent(&content);
aFrame->GetStyleContext(&styleContext);
if (nsLayoutAtoms::textFrame == frameType) {
rv = NS_NewContinuingTextFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::inlineFrame == frameType) {
rv = NS_NewInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::blockFrame == frameType) {
rv = NS_NewBlockFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::areaFrame == frameType) {
rv = NS_NewAreaFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext,
aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::positionedInlineFrame == frameType) {
rv = NS_NewPositionedInlineFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::pageFrame == frameType) {
rv = NS_NewPageFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_TRUE);
}
} 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);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::tableRowFrame == frameType) {
rv = NS_NewTableRowFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, 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 (nsLayoutAtoms::tableCellFrame == tableType) {
nsIFrame* continuingCellFrame;
CreateContinuingFrame(aPresShell, aPresContext, cellFrame, newFrame, &continuingCellFrame);
newChildList.AddChild(continuingCellFrame);
}
NS_IF_RELEASE(tableType);
cellFrame->GetNextSibling(&cellFrame);
}
// Set the table cell's initial child list
newFrame->SetInitialChildList(aPresContext, nsnull, newChildList.childList);
}
} else if (nsLayoutAtoms::tableCellFrame == frameType) {
rv = NS_NewTableCellFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, 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);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsLayoutAtoms::letterFrame == frameType) {
rv = NS_NewFirstLetterFrame(aPresShell, &newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else {
NS_ASSERTION(PR_FALSE, "unexpected frame type");
rv = NS_ERROR_UNEXPECTED;
}
*aContinuingFrame = newFrame;
NS_RELEASE(styleContext);
NS_IF_RELEASE(content);
NS_IF_RELEASE(frameType);
return rv;
}
// Helper function that searches the immediate child frames for a frame that
// maps the specified content object
static nsIFrame*
FindFrameWithContent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIContent* aParentContent,
nsIContent* aContent)
{
NS_PRECONDITION(aParentFrame, "No frame to search!");
if (!aParentFrame) {
return nsnull;
}
keepLooking:
// Search for the frame in each child list that aParentFrame supports
nsIAtom* listName = nsnull;
PRInt32 listIndex = 0;
do {
nsIFrame* kidFrame;
aParentFrame->FirstChild(aPresContext, listName, &kidFrame);
while (kidFrame) {
nsCOMPtr<nsIContent> kidContent;
// See if the child frame points to the content object we're
// looking for
kidFrame->GetContent(getter_AddRefs(kidContent));
if (kidContent.get() == aContent) {
nsCOMPtr<nsIAtom> frameType;
// We found a match. See if it's a placeholder frame
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();
} else {
// Return the matching child frame
return kidFrame;
}
}
// 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
if (kidContent.get() == aParentContent) {
nsIFrame* matchingFrame = FindFrameWithContent(aPresContext, kidFrame, aParentContent,
aContent);
if (matchingFrame) {
return matchingFrame;
}
}
// Get the next sibling frame
kidFrame->GetNextSibling(&kidFrame);
}
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->GetNextInFlow(&aParentFrame);
if (aParentFrame) {
goto keepLooking;
}
// 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)
{
*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
nsCOMPtr<nsIContent> parentContent;
nsIFrame* parentFrame;
// 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
aContent->GetParent(*getter_AddRefs(parentContent));
if (parentContent.get()) {
aFrameManager->GetPrimaryFrameFor(parentContent, &parentFrame);
if (parentFrame) {
// Search the child frames for a match
*aFrame = FindFrameWithContent(aPresContext, parentFrame, parentContent.get(), aContent);
// 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);
}
}
}
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(aPresContext, aFrame, aHistoryState);
}
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult rv = NS_OK;
nsIContent* container;
rv = aContent->GetParent(container);
if (NS_SUCCEEDED(rv) && container) {
PRInt32 indexInContainer;
rv = container->IndexOf(aContent, indexInContainer);
if (NS_SUCCEEDED(rv)) {
// Before removing the frames associated with the content object, ask them to save their
// state onto a temporary state object.
CaptureStateForFramesOf(aPresContext, aContent, mTempFrameTreeState);
// Remove the frames associated with the content object on which the
// attribute change occurred.
rv = ContentRemoved(aPresContext, container, aContent, indexInContainer);
if (NS_SUCCEEDED(rv)) {
// Now, recreate the frames associated with this content object.
rv = ContentInserted(aPresContext, container, aContent, indexInContainer, mTempFrameTreeState);
}
}
NS_RELEASE(container);
}
return rv;
}
//////////////////////////////////////////////////////////////////////
// Block frame construction code
nsIStyleContext*
nsCSSFrameConstructor::GetFirstLetterStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsIStyleContext* fls = nsnull;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLetterPseudo,
aStyleContext, PR_FALSE, &fls);
return fls;
}
nsIStyleContext*
nsCSSFrameConstructor::GetFirstLineStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsIStyleContext* fls = nsnull;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLinePseudo,
aStyleContext, PR_FALSE, &fls);
return fls;
}
// Predicate to see if a given content (block element) has
// first-letter style applied to it.
PRBool
nsCSSFrameConstructor::HaveFirstLetterStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsCOMPtr<nsIStyleContext> fls;
aPresContext->ProbePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLetterPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(fls));
PRBool result = PR_FALSE;
if (fls) {
result = PR_TRUE;
}
return result;
}
PRBool
nsCSSFrameConstructor::HaveFirstLineStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext)
{
nsCOMPtr<nsIStyleContext> fls;
aPresContext->ProbePseudoStyleContextFor(aContent,
nsHTMLAtoms::firstLinePseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(fls));
PRBool result = PR_FALSE;
if (fls) {
result = PR_TRUE;
}
return result;
}
void
nsCSSFrameConstructor::HaveSpecialBlockStyle(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* 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)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIStyleContext> styleContext;
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::beforePseudo,
aParentIsBlock, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
// Iterate the child content objects and construct frames
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
// Construct a child frame
rv = ConstructFrame(aPresShell, aPresContext, aState, childContent, aFrame, aFrameItems);
if (NS_FAILED(rv)) {
return rv;
}
}
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::afterPseudo,
aParentIsBlock, &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
// XXX this predicate and its cousins need to migrated to a single
// place in layout - something in nsStyleDisplay maybe?
static PRBool
IsInlineFrame(nsIFrame* aFrame)
{
const nsStyleDisplay* display;
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) display);
switch (display->mDisplay) {
case NS_STYLE_DISPLAY_INLINE:
case NS_STYLE_DISPLAY_INLINE_BLOCK:
case NS_STYLE_DISPLAY_INLINE_TABLE:
return PR_TRUE;
default:
break;
}
return PR_FALSE;
}
static void
ReparentFrame(nsIPresContext* aPresContext,
nsIFrame* aNewParentFrame,
nsIStyleContext* 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->GetNextSibling(&kid);
}
// If we don't find any inline frames, then there is nothing to do
if (!firstInlineFrame) {
return rv;
}
// Create line frame
nsCOMPtr<nsIStyleContext> parentStyle;
aFrame->GetStyleContext(getter_AddRefs(parentStyle));
nsCOMPtr<nsIStyleContext> 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(&secondBlockFrame);
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->GetNextSibling(&kid);
}
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;
nsCOMPtr<nsIStyleContext> firstLineStyle;
lineFrame->GetStyleContext(getter_AddRefs(firstLineStyle));
// 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->GetNextSibling(&kid);
}
// 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(&remainingFrames);
lastInlineFrame->SetNextSibling(nsnull);
kid = firstInlineFrame;
while (kid) {
ReparentFrame(aPresContext, lineFrame, firstLineStyle, kid);
kid->GetNextSibling(&kid);
}
aState.mFrameManager->AppendFrames(aPresContext, *aState.mPresShell,
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;
nsCOMPtr<nsIStyleContext> firstLineStyle;
lineFrame->GetStyleContext(getter_AddRefs(firstLineStyle));
if (isInline) {
// Easy case: the new inline frame will go into the lineFrame.
ReparentFrame(aPresContext, lineFrame, firstLineStyle, newFrame);
aState.mFrameManager->InsertFrames(aPresContext, *aState.mPresShell,
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
nsCOMPtr<nsIStyleContext> parentStyle;
aBlockFrame->GetStyleContext(getter_AddRefs(parentStyle));
nsCOMPtr<nsIStyleContext> 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(&prevSiblingParent);
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(&nextSibling);
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,
nsIStyleContext* 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).
nsCOMPtr<nsIStyleContext> textSC;
aPresContext->ResolveStyleContextFor(aTextContent, aStyleContext, PR_FALSE,
getter_AddRefs(textSC));
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
nsCOMPtr<nsIStyleContext> parentStyleContext;
parentStyleContext = getter_AddRefs(aStyleContext->GetParent());
if (parentStyleContext) {
nsCOMPtr<nsIStyleContext> newSC;
aPresContext->ResolveStyleContextFor(aTextContent, parentStyleContext,
PR_FALSE, getter_AddRefs(newSC));
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)
{
nsCOMPtr<nsIContent> parentContent;
aParentFrame->GetContent(getter_AddRefs(parentContent));
// Get style context for the first-letter-frame
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
if (parentStyleContext) {
// Use content from containing block so that we can actually
// find a matching style rule.
nsCOMPtr<nsIContent> blockContent;
aState.mFloatedItems.containingBlock->GetContent(
getter_AddRefs(blockContent));
// Create first-letter style rule
nsCOMPtr<nsIStyleContext> 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 = (const nsStyleDisplay*)
sc->GetStyleData(eStyleStruct_Display);
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);
nsCOMPtr<nsIStyleContext> textSC;
aPresContext->ResolveStyleContextFor(aTextContent, sc, PR_FALSE,
getter_AddRefs(textSC));
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(&nextSibling);
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
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(&nextFrame);
nsCOMPtr<nsIAtom> frameType;
frame->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::textFrame == frameType.get()) {
// Wrap up first-letter content in a letter frame
nsCOMPtr<nsIContent> textContent;
frame->GetContent(getter_AddRefs(textContent));
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 floater frame that is a letter frame
nsIFrame* floater;
aBlockFrame->FirstChild(aPresContext, nsLayoutAtoms::floaterList, &floater);
while (floater) {
// See if we found a floating letter frame
nsCOMPtr<nsIAtom> frameType;
floater->GetFrameType(getter_AddRefs(frameType));
if (nsLayoutAtoms::letterFrame == frameType.get()) {
break;
}
floater->GetNextSibling(&floater);
}
if (!floater) {
// 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;
floater->FirstChild(aPresContext, nsnull, &textFrame);
if (!textFrame) {
return NS_OK;
}
// Discover the placeholder frame for the letter frame
nsIFrame* parentFrame;
nsIFrame* placeholderFrame;
aFrameManager->GetPlaceholderFrameFor(floater, &placeholderFrame);
if (!placeholderFrame) {
// Somethings really wrong
return NS_OK;
}
placeholderFrame->GetParent(&parentFrame);
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).
nsCOMPtr<nsIStyleContext> parentSC;
parentFrame->GetStyleContext(getter_AddRefs(parentSC));
if (!parentSC) {
return NS_OK;
}
nsCOMPtr<nsIContent> textContent;
textFrame->GetContent(getter_AddRefs(textContent));
if (!textContent) {
return NS_OK;
}
nsCOMPtr<nsIStyleContext> newSC;
aPresContext->ResolveStyleContextFor(textContent, parentSC,
PR_FALSE,
getter_AddRefs(newSC));
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(&nextTextParent);
if (nextTextParent) {
nsSplittableFrame::BreakFromPrevFlow(nextTextFrame);
aFrameManager->RemoveFrame(aPresContext, *aPresShell, 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;
nsCOMPtr<nsIContent> container;
parentFrame->GetContent(getter_AddRefs(container));
if (container.get() && textContent.get()) {
PRInt32 ix = 0;
container->IndexOf(textContent, ix);
prevSibling = FindPreviousSibling(aPresShell, container, ix);
}
// Now that everything is set...
#ifdef NOISY_FIRST_LETTER
printf("RemoveFloatingFirstLetterFrames: textContent=%p oldTextFrame=%p newTextFrame=%p\n",
textContent.get(), textFrame, newTextFrame);
#endif
aFrameManager->SetPlaceholderFrameFor(floater, nsnull);
aFrameManager->SetPrimaryFrameFor(textContent, nsnull);
// Remove the floater frame
aFrameManager->RemoveFrame(aPresContext, *aPresShell,
aBlockFrame, nsLayoutAtoms::floaterList,
floater);
// Remove placeholder frame
aFrameManager->RemoveFrame(aPresContext, *aPresShell,
parentFrame, nsnull, placeholderFrame);
// Insert text frame in its place
aFrameManager->InsertFrames(aPresContext, *aPresShell, 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
nsCOMPtr<nsIStyleContext> parentSC;
aFrame->GetStyleContext(getter_AddRefs(parentSC));
if (!parentSC) {
break;
}
nsCOMPtr<nsIContent> textContent;
textFrame->GetContent(getter_AddRefs(textContent));
if (!textContent) {
break;
}
nsCOMPtr<nsIStyleContext> newSC;
aPresContext->ResolveStyleContextFor(textContent, parentSC,
PR_FALSE,
getter_AddRefs(newSC));
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;
frameManager->SetPrimaryFrameFor(textContent, nsnull);
frameManager->RemoveFrame(aPresContext, *aPresShell,
aFrame, nsnull, kid);
// Insert text frame in its place
frameManager->InsertFrames(aPresContext, *aPresShell, 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->GetNextSibling(&kid);
}
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
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 floaters too if needed
if (aState.mFloatedItems.childList) {
aBlockFrame->AppendFrames(aPresContext, *aState.mPresShell.get(),
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
}
return rv;
}
//----------------------------------------------------------------------
// Tree Widget Routines
NS_IMETHODIMP
nsCSSFrameConstructor::CreateTreeWidgetContent(nsIPresContext* aPresContext,
nsIFrame* aParentFrame,
nsIFrame* aPrevFrame,
nsIContent* aChild,
nsIFrame** aNewFrame,
PRBool aIsAppend,
PRBool aIsScrollbar,
nsILayoutHistoryState* aFrameState)
{
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),
GetFloaterContainingBlock(aPresContext, aParentFrame),
mTempFrameTreeState);
// Get the element's tag
nsCOMPtr<nsIAtom> tag;
aChild->GetTag(*getter_AddRefs(tag));
nsCOMPtr<nsIStyleContext> styleContext;
rv = ResolveStyleContext(aPresContext, aParentFrame, aChild, tag, getter_AddRefs(styleContext));
if (NS_SUCCEEDED(rv)) {
// Pre-check for display "none" - only if we find that, do we create
// any frame at all
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (NS_STYLE_DISPLAY_NONE == display->mDisplay) {
*aNewFrame = nsnull;
return NS_OK;
}
}
rv = ConstructFrame(shell, aPresContext, state, aChild, aParentFrame, frameItems);
nsIFrame* newFrame = frameItems.childList;
*aNewFrame = newFrame;
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
// Notify the parent frame
if (aIsScrollbar)
((nsTreeRowGroupFrame*)aParentFrame)->SetScrollbarFrame(aPresContext, newFrame);
else if (aIsAppend)
rv = ((nsTreeRowGroupFrame*)aParentFrame)->TreeAppendFrames(newFrame);
else
rv = ((nsTreeRowGroupFrame*)aParentFrame)->TreeInsertFrames(aPrevFrame, newFrame);
// If there are new absolutely positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mAbsoluteItems.childList) {
rv = state.mAbsoluteItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::absoluteList,
state.mAbsoluteItems.childList);
}
// If there are new fixed positioned child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFixedItems.childList) {
rv = state.mFixedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::fixedList,
state.mFixedItems.childList);
}
// If there are new floating child frames, then notify
// the parent
// XXX We can't just assume these frames are being appended, we need to
// determine where in the list they should be inserted...
if (state.mFloatedItems.childList) {
rv = state.mFloatedItems.containingBlock->AppendFrames(aPresContext, *shell,
nsLayoutAtoms::floaterList,
state.mFloatedItems.childList);
}
}
}
return rv;
}
//----------------------------------------------------------------------
// 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)
{
const nsStyleDisplay* display;
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) display);
if (NS_STYLE_DISPLAY_INLINE == display->mDisplay) {
return PR_FALSE;
}
return PR_TRUE;
}
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->GetNextSibling(&aKid);
}
*aPrevKid = nsnull;
return nsnull;
}
static nsIFrame*
FindLastBlock(nsIPresContext* aPresContext, nsIFrame* aKid)
{
nsIFrame* lastBlock = nsnull;
while (aKid) {
if (IsBlockFrame(aPresContext, aKid)) {
lastBlock = aKid;
}
aKid->GetNextSibling(&aKid);
}
return lastBlock;
}
static nsresult
MoveChildrenTo(nsIPresContext* aPresContext,
nsIStyleContext* aNewParentSC,
nsIFrame* aNewParent,
nsIFrame* aFrameList)
{
while (aFrameList) {
aFrameList->SetParent(aNewParent);
aFrameList->GetNextSibling(&aFrameList);
}
return NS_OK;
}
//----------------------------------------
nsresult
nsCSSFrameConstructor::ConstructBlock(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aNewFrame)
{
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(aPresContext, aNewFrame,
aStyleContext, PR_FALSE);
// 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 floaterSaveState;
aState.PushFloaterContainingBlock(aNewFrame, floaterSaveState,
haveFirstLetterStyle,
haveFirstLineStyle);
nsresult rv = ProcessBlockChildren(aPresShell, aPresContext, aState, aContent, aNewFrame,
PR_TRUE, childItems, PR_TRUE);
// Set the frame's initial child list
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.childList);
// Set the frame's floater list if there were any floated children
if (aState.mFloatedItems.childList) {
aNewFrame->SetInitialChildList(aPresContext,
nsLayoutAtoms::floaterList,
aState.mFloatedItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ProcessBlockChildren(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
nsIContent* aContent,
nsIFrame* aFrame,
PRBool aCanHaveGeneratedContent,
nsFrameItems& aFrameItems,
PRBool aParentIsBlock)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIStyleContext> styleContext;
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::beforePseudo,
aParentIsBlock, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
// Iterate the child content objects and construct frames
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
// Construct a child frame
rv = ConstructFrame(aPresShell, aPresContext, aState, childContent, aFrame, aFrameItems);
if (NS_FAILED(rv)) {
return rv;
}
}
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::afterPseudo,
aParentIsBlock, &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;
}
// 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 void
DestroyInlineFrameAnnotation(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIAtom* aPropertyName,
void* aPropertyValue)
{
}
PRBool
nsCSSFrameConstructor::IsFrameSpecial(nsIFrameManager* aFrameManager, nsIFrame* aFrame)
{
void* value;
nsresult rv = aFrameManager->GetFrameProperty(aFrame, nsLayoutAtoms::inlineFrameAnnotation, 0, &value);
if (NS_OK == rv) {
return PR_TRUE;
}
return PR_FALSE;
}
PRBool
nsCSSFrameConstructor::IsFrameSpecial(nsIPresContext* aPresContext, nsIFrame* aFrame)
{
// Get to aFrame's first-in-flow; only the first-in-flow is marked
// with an annotation.
nsSplittableType splits;
aFrame->IsSplittable(splits);
if (splits != NS_FRAME_NOT_SPLITTABLE) {
nsIFrame* prevInFlow = aFrame;
while (prevInFlow) {
aFrame = prevInFlow;
prevInFlow->GetPrevInFlow(&prevInFlow);
}
}
PRBool result = PR_FALSE;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
if (shell) {
nsCOMPtr<nsIFrameManager> frameManager;
shell->GetFrameManager(getter_AddRefs(frameManager));
if (frameManager) {
void* value;
nsresult rv = frameManager->GetFrameProperty(aFrame, nsLayoutAtoms::inlineFrameAnnotation,
0, &value);
if (NS_OK == rv) {
result = PR_TRUE;
}
}
}
return result;
}
void
nsCSSFrameConstructor::SetFrameIsSpecial(nsIFrameManager* aFrameManager, nsIFrame* aFrame)
{
aFrameManager->SetFrameProperty(aFrame, nsLayoutAtoms::inlineFrameAnnotation,
(void*) PR_TRUE, DestroyInlineFrameAnnotation);
}
PRBool
nsCSSFrameConstructor::AreAllKidsInline(nsIFrame* aFrameList)
{
nsIFrame* kid = aFrameList;
while (kid) {
if (!IsInlineFrame(kid)) {
return PR_FALSE;
}
kid->GetNextSibling(&kid);
}
return PR_TRUE;
}
nsresult
nsCSSFrameConstructor::ConstructInline(nsIPresShell* aPresShell,
nsIPresContext* aPresContext,
nsFrameConstructorState& aState,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aNewFrame,
nsIFrame** aNewBlockFrame,
nsIFrame** aNextInlineFrame)
{
// Initialize the frame
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, aNewFrame);
// 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
aNewFrame->SetInitialChildList(aPresContext, nsnull, childItems.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(&afterFirstBlock);
nsIFrame* list3 = nsnull;
nsIFrame* lastBlock = FindLastBlock(aPresContext, afterFirstBlock);
if (!lastBlock) {
lastBlock = list2;
}
lastBlock->GetNextSibling(&list3);
lastBlock->SetNextSibling(nsnull);
// list1's frames belong to this inline frame so go ahead and take them
aNewFrame->SetInitialChildList(aPresContext, nsnull, list1);
// 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;
NS_NewBlockFrame(aPresShell, &blockFrame);
nsCOMPtr<nsIStyleContext> blockSC;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::mozAnonymousBlock,
aStyleContext, PR_FALSE,
getter_AddRefs(blockSC));
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, blockSC, nsnull, blockFrame);
MoveChildrenTo(aPresContext, blockSC, blockFrame, list2);
blockFrame->SetInitialChildList(aPresContext, nsnull, list2);
// list3's frames belong to another inline frame
nsIFrame* inlineFrame = nsnull;
NS_NewInlineFrame(aPresShell, &inlineFrame);
InitAndRestoreFrame(aPresContext, aState, aContent,
aParentFrame, aStyleContext, nsnull, inlineFrame);
if (list3) {
// Reparent (cheaply) the frames in list3 - we don't have to futz
// with their style context because they already have the right one.
nsFrameList list;
list.AppendFrames(inlineFrame, list3);
}
inlineFrame->SetInitialChildList(aPresContext, nsnull, list3);
// 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);
SetFrameIsSpecial(aState.mFrameManager, blockFrame);
SetFrameIsSpecial(aState.mFrameManager, inlineFrame);
#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 (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;
nsCOMPtr<nsIStyleContext> styleContext;
if (aCanHaveGeneratedContent) {
// Probe for generated content before
nsIFrame* generatedFrame;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::beforePseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
// Iterate the child content objects and construct frames
PRBool allKidsInline = PR_TRUE;
PRInt32 count;
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent)))) {
// Construct a child frame
nsIFrame* oldLastChild = aFrameItems.lastChild;
rv = ConstructFrame(aPresShell, aPresContext, aState, childContent, 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) {
oldLastChild->GetNextSibling(&kid);
}
else {
kid = aFrameItems.childList;
}
while (kid) {
if (!IsInlineFrame(kid)) {
allKidsInline = PR_FALSE;
break;
}
kid->GetNextSibling(&kid);
}
}
}
}
if (aCanHaveGeneratedContent) {
// Probe for generated content after
nsIFrame* generatedFrame;
if (CreateGeneratedContentFrame(aPresShell, aPresContext, aState, aFrame, aContent,
styleContext, nsCSSAtoms::afterPseudo,
PR_FALSE, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
*aKidsAllInline = allKidsInline;
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* aFrame)
{
nsCOMPtr<nsIContent> content;
aFrame->GetContent(getter_AddRefs(content));
// Remove the mapping from the content object to its frame
aFrameManager->SetPrimaryFrameFor(content, nsnull);
aFrameManager->ClearAllUndisplayedContentIn(content);
// Recursively walk the child frames.
// Note: we only need to look at the principal child list
nsIFrame* childFrame;
aFrame->FirstChild(aPresContext, nsnull, &childFrame);
while (childFrame) {
DoCleanupFrameReferences(aPresContext, aFrameManager, childFrame);
// Get the next sibling child frame
childFrame->GetNextSibling(&childFrame);
}
}
// 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->GetNextSibling(&aFrameList);
}
}
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.
const nsStyleDisplay* parentDisplay;
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&) parentDisplay);
if (NS_STYLE_DISPLAY_INLINE == parentDisplay->mDisplay) {
if (!AreAllKidsInline(aFrameList)) {
// 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
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(*getter_AddRefs(parentContainer));
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf("nsCSSFrameConstructor::WipeContainingBlock: aBlockContent=%p parentContainer=%p\n",
aBlockContent, parentContainer.get());
}
#endif
if (parentContainer) {
PRInt32 ix;
parentContainer->IndexOf(aBlockContent, ix);
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;
}
nsresult
nsCSSFrameConstructor::ReframeContainingBlock(nsIPresContext* aPresContext, nsIFrame* aFrame)
{
// Get the parent of the target frame. From there 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)
nsIFrame* parentFrame;
aFrame->GetParent(&parentFrame);
if (!parentFrame) {
return RecreateEntireFrameTree(aPresContext);
}
// Now find the containing block
nsIFrame* containingBlock = GetFloaterContainingBlock(aPresContext, parentFrame);
if (!containingBlock) {
return RecreateEntireFrameTree(aPresContext);
}
// And get the containingBlock's content
nsCOMPtr<nsIContent> blockContent;
containingBlock->GetContent(getter_AddRefs(blockContent));
if (!blockContent) {
return RecreateEntireFrameTree(aPresContext);
}
// Now find the containingBlock's content's parent
nsCOMPtr<nsIContent> parentContainer;
blockContent->GetParent(*getter_AddRefs(parentContainer));
if (!parentContainer) {
return RecreateEntireFrameTree(aPresContext);
}
#ifdef DEBUG
if (gNoisyContentUpdates) {
printf(" ==> blockContent=%p, parentContainer=%p\n",
blockContent.get(), parentContainer.get());
}
#endif
PRInt32 ix;
parentContainer->IndexOf(blockContent, ix);
nsresult rv = ContentReplaced(aPresContext, parentContainer, blockContent, blockContent, ix);
return rv;
}
nsresult
nsCSSFrameConstructor::RecreateEntireFrameTree(nsIPresContext* aPresContext)
{
// XXX write me some day
return NS_OK;
}
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