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gecko-dev/layout/generic/nsFrameSetFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* rendering object for HTML <frameset> elements */
#include "nsCOMPtr.h"
#include "nsFrameSetFrame.h"
#include "nsContentUtils.h"
#include "nsGenericHTMLElement.h"
#include "nsLeafFrame.h"
#include "nsHTMLContainerFrame.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIComponentManager.h"
#include "nsIStreamListener.h"
#include "nsIURL.h"
#include "nsIDocument.h"
#include "nsINodeInfo.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsWidgetsCID.h"
#include "nsGkAtoms.h"
#include "nsStyleCoord.h"
#include "nsStyleConsts.h"
#include "nsStyleContext.h"
#include "nsHTMLParts.h"
#include "nsILookAndFeel.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
#include "nsGUIEvent.h"
#include "nsRenderingContext.h"
#include "nsIServiceManager.h"
#include "nsIDOMMutationEvent.h"
#include "nsINameSpaceManager.h"
#include "nsCSSAnonBoxes.h"
#include "nsAutoPtr.h"
#include "nsStyleSet.h"
#include "mozilla/dom/Element.h"
#include "nsDisplayList.h"
#include "nsNodeUtils.h"
#include "mozAutoDocUpdate.h"
// masks for mEdgeVisibility
#define LEFT_VIS 0x0001
#define RIGHT_VIS 0x0002
#define TOP_VIS 0x0004
#define BOTTOM_VIS 0x0008
#define ALL_VIS 0x000F
#define NONE_VIS 0x0000
static NS_DEFINE_CID(kLookAndFeelCID, NS_LOOKANDFEEL_CID);
/*******************************************************************************
* nsFramesetDrag
******************************************************************************/
nsFramesetDrag::nsFramesetDrag()
{
UnSet();
}
void nsFramesetDrag::Reset(PRBool aVertical,
PRInt32 aIndex,
PRInt32 aChange,
nsHTMLFramesetFrame* aSource)
{
mVertical = aVertical;
mIndex = aIndex;
mChange = aChange;
mSource = aSource;
}
void nsFramesetDrag::UnSet()
{
mVertical = PR_TRUE;
mIndex = -1;
mChange = 0;
mSource = nsnull;
}
/*******************************************************************************
* nsHTMLFramesetBorderFrame
******************************************************************************/
class nsHTMLFramesetBorderFrame : public nsLeafFrame
{
public:
NS_DECL_FRAMEARENA_HELPERS
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD GetCursor(const nsPoint& aPoint,
nsIFrame::Cursor& aCursor);
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
PRBool GetVisibility() { return mVisibility || mVisibilityOverride; }
void SetVisibility(PRBool aVisibility);
void SetColor(nscolor aColor);
void PaintBorder(nsRenderingContext& aRenderingContext, nsPoint aPt);
protected:
nsHTMLFramesetBorderFrame(nsStyleContext* aContext, PRInt32 aWidth, PRBool aVertical, PRBool aVisible);
virtual ~nsHTMLFramesetBorderFrame();
virtual nscoord GetIntrinsicWidth();
virtual nscoord GetIntrinsicHeight();
// the prev and next neighbors are indexes into the row (for a horizontal border) or col (for
// a vertical border) of nsHTMLFramesetFrames or nsHTMLFrames
PRInt32 mPrevNeighbor;
PRInt32 mNextNeighbor;
nscolor mColor;
PRInt32 mWidth;
PRPackedBool mVertical;
PRPackedBool mVisibility;
PRPackedBool mVisibilityOverride;
PRPackedBool mCanResize;
friend class nsHTMLFramesetFrame;
};
/*******************************************************************************
* nsHTMLFramesetBlankFrame
******************************************************************************/
class nsHTMLFramesetBlankFrame : public nsLeafFrame
{
public:
NS_DECL_FRAMEARENA_HELPERS
#ifdef DEBUG
NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endif
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
protected:
nsHTMLFramesetBlankFrame(nsStyleContext* aContext) : nsLeafFrame(aContext) {}
virtual ~nsHTMLFramesetBlankFrame();
virtual nscoord GetIntrinsicWidth();
virtual nscoord GetIntrinsicHeight();
friend class nsHTMLFramesetFrame;
friend class nsHTMLFrameset;
};
/*******************************************************************************
* nsHTMLFramesetFrame
******************************************************************************/
PRBool nsHTMLFramesetFrame::gDragInProgress = PR_FALSE;
#define kFrameResizePref "layout.frames.force_resizability"
#define DEFAULT_BORDER_WIDTH_PX 6
nsHTMLFramesetFrame::nsHTMLFramesetFrame(nsStyleContext* aContext)
: nsHTMLContainerFrame(aContext)
{
mNumRows = 0;
mRowSizes = nsnull;
mNumCols = 0;
mColSizes = nsnull;
mEdgeVisibility = 0;
mParentFrameborder = eFrameborder_Yes; // default
mParentBorderWidth = -1; // default not set
mParentBorderColor = NO_COLOR; // default not set
mFirstDragPoint.x = mFirstDragPoint.y = 0;
mMinDrag = nsPresContext::CSSPixelsToAppUnits(2);
mNonBorderChildCount = 0;
mNonBlankChildCount = 0;
mDragger = nsnull;
mChildCount = 0;
mTopLevelFrameset = nsnull;
mEdgeColors.Set(NO_COLOR);
mVerBorders = nsnull;
mHorBorders = nsnull;
mChildTypes = nsnull;
mChildFrameborder = nsnull;
mChildBorderColors = nsnull;
mForceFrameResizability = PR_FALSE;
}
nsHTMLFramesetFrame::~nsHTMLFramesetFrame()
{
delete[] mRowSizes;
delete[] mColSizes;
delete[] mVerBorders;
delete[] mHorBorders;
delete[] mChildTypes;
delete[] mChildFrameborder;
delete[] mChildBorderColors;
nsContentUtils::UnregisterPrefCallback(kFrameResizePref,
FrameResizePrefCallback, this);
}
NS_QUERYFRAME_HEAD(nsHTMLFramesetFrame)
NS_QUERYFRAME_ENTRY(nsHTMLFramesetFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsHTMLContainerFrame)
// static
int
nsHTMLFramesetFrame::FrameResizePrefCallback(const char* aPref, void* aClosure)
{
nsHTMLFramesetFrame *frame =
reinterpret_cast<nsHTMLFramesetFrame *>(aClosure);
nsIDocument* doc = frame->mContent->GetDocument();
mozAutoDocUpdate updateBatch(doc, UPDATE_CONTENT_MODEL, PR_TRUE);
if (doc) {
nsNodeUtils::AttributeWillChange(frame->GetContent()->AsElement(),
kNameSpaceID_None,
nsGkAtoms::frameborder,
nsIDOMMutationEvent::MODIFICATION);
}
frame->mForceFrameResizability =
nsContentUtils::GetBoolPref(kFrameResizePref,
frame->mForceFrameResizability);
frame->RecalculateBorderResize();
if (doc) {
nsNodeUtils::AttributeChanged(frame->GetContent()->AsElement(),
kNameSpaceID_None,
nsGkAtoms::frameborder,
nsIDOMMutationEvent::MODIFICATION);
}
return 0;
}
#define FRAMESET 0
#define FRAME 1
#define BLANK 2
NS_IMETHODIMP
nsHTMLFramesetFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsHTMLContainerFrame::Init(aContent, aParent, aPrevInFlow);
// find the highest ancestor that is a frameset
nsresult rv = NS_OK;
nsIFrame* parentFrame = GetParent();
mTopLevelFrameset = (nsHTMLFramesetFrame*)this;
while (parentFrame) {
nsHTMLFramesetFrame* frameset = do_QueryFrame(parentFrame);
if (frameset) {
mTopLevelFrameset = frameset;
parentFrame = parentFrame->GetParent();
} else {
break;
}
}
nsPresContext* presContext = PresContext();
nsIPresShell* shell = presContext->PresShell();
nsFrameborder frameborder = GetFrameBorder();
PRInt32 borderWidth = GetBorderWidth(presContext, PR_FALSE);
nscolor borderColor = GetBorderColor();
// Get the rows= cols= data
nsCOMPtr<nsIFrameSetElement> ourContent(do_QueryInterface(mContent));
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nsnull;
const nsFramesetSpec* colSpecs = nsnull;
nsresult result = ourContent->GetRowSpec(&mNumRows, &rowSpecs);
NS_ENSURE_SUCCESS(result, result);
result = ourContent->GetColSpec(&mNumCols, &colSpecs);
NS_ENSURE_SUCCESS(result, result);
// Maximum value of mNumRows and mNumCols is NS_MAX_FRAMESET_SPEC_COUNT
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscoord));
mRowSizes = new nscoord[mNumRows];
mColSizes = new nscoord[mNumCols];
if (!mRowSizes || !mColSizes)
return NS_ERROR_OUT_OF_MEMORY;
// Ensure we can't overflow numCells
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < PR_INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT);
PRInt32 numCells = mNumRows*mNumCols;
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsHTMLFramesetBorderFrame*));
mVerBorders = new nsHTMLFramesetBorderFrame*[mNumCols]; // 1 more than number of ver borders
if (!mVerBorders)
return NS_ERROR_OUT_OF_MEMORY;
for (int verX = 0; verX < mNumCols; verX++)
mVerBorders[verX] = nsnull;
mHorBorders = new nsHTMLFramesetBorderFrame*[mNumRows]; // 1 more than number of hor borders
if (!mHorBorders)
return NS_ERROR_OUT_OF_MEMORY;
for (int horX = 0; horX < mNumRows; horX++)
mHorBorders[horX] = nsnull;
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT
< UINT_MAX / sizeof(PRInt32) / NS_MAX_FRAMESET_SPEC_COUNT);
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT
< UINT_MAX / sizeof(nsFrameborder) / NS_MAX_FRAMESET_SPEC_COUNT);
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT
< UINT_MAX / sizeof(nsBorderColor) / NS_MAX_FRAMESET_SPEC_COUNT);
mChildTypes = new PRInt32[numCells];
mChildFrameborder = new nsFrameborder[numCells];
mChildBorderColors = new nsBorderColor[numCells];
if (!mChildTypes || !mChildFrameborder || !mChildBorderColors)
return NS_ERROR_OUT_OF_MEMORY;
// create the children frames; skip content which isn't <frameset> or <frame>
mChildCount = 0; // number of <frame> or <frameset> children
nsIFrame* frame;
// number of any type of children
PRUint32 numChildren = mContent->GetChildCount();
for (PRUint32 childX = 0; childX < numChildren; childX++) {
if (mChildCount == numCells) { // we have more <frame> or <frameset> than cells
// Clear the lazy bits in the remaining children. Also clear
// the restyle flags, like nsCSSFrameConstructor::ProcessChildren does.
for (PRUint32 i = childX; i < numChildren; i++) {
nsIContent *child = mContent->GetChildAt(i);
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
if (child->IsElement()) {
child->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS);
}
}
break;
}
nsIContent *child = mContent->GetChildAt(childX);
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
// Also clear the restyle flags in the child like
// nsCSSFrameConstructor::ProcessChildren does.
if (child->IsElement()) {
child->UnsetFlags(ELEMENT_ALL_RESTYLE_FLAGS);
}
// IMPORTANT: This must match the conditions in
// nsCSSFrameConstructor::ContentAppended/Inserted/Removed
if (!child->IsHTML())
continue;
nsIAtom *tag = child->Tag();
if (tag == nsGkAtoms::frameset || tag == nsGkAtoms::frame) {
nsRefPtr<nsStyleContext> kidSC;
nsresult result;
kidSC = shell->StyleSet()->ResolveStyleFor(child->AsElement(),
mStyleContext);
if (tag == nsGkAtoms::frameset) {
frame = NS_NewHTMLFramesetFrame(shell, kidSC);
if (NS_UNLIKELY(!frame))
return NS_ERROR_OUT_OF_MEMORY;
mChildTypes[mChildCount] = FRAMESET;
nsHTMLFramesetFrame* childFrame = (nsHTMLFramesetFrame*)frame;
childFrame->SetParentFrameborder(frameborder);
childFrame->SetParentBorderWidth(borderWidth);
childFrame->SetParentBorderColor(borderColor);
result = frame->Init(child, this, nsnull);
if (NS_FAILED(result)) {
frame->Destroy();
return result;
}
mChildBorderColors[mChildCount].Set(childFrame->GetBorderColor());
} else { // frame
frame = NS_NewSubDocumentFrame(shell, kidSC);
if (NS_UNLIKELY(!frame))
return NS_ERROR_OUT_OF_MEMORY;
result = frame->Init(child, this, nsnull);
if (NS_FAILED(result)) {
frame->Destroy();
return result;
}
mChildTypes[mChildCount] = FRAME;
mChildFrameborder[mChildCount] = GetFrameBorder(child);
mChildBorderColors[mChildCount].Set(GetBorderColor(child));
}
child->SetPrimaryFrame(frame);
if (NS_FAILED(result))
return result;
mFrames.AppendFrame(nsnull, frame);
mChildCount++;
}
}
mNonBlankChildCount = mChildCount;
// add blank frames for frameset cells that had no content provided
for (int blankX = mChildCount; blankX < numCells; blankX++) {
nsRefPtr<nsStyleContext> pseudoStyleContext;
pseudoStyleContext = shell->StyleSet()->
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::framesetBlank, mStyleContext);
if (!pseudoStyleContext) {
return NS_ERROR_OUT_OF_MEMORY;
}
// XXX the blank frame is using the content of its parent - at some point it
// should just have null content, if we support that
nsHTMLFramesetBlankFrame* blankFrame = new (shell) nsHTMLFramesetBlankFrame(pseudoStyleContext);
if (!blankFrame)
return NS_ERROR_OUT_OF_MEMORY;
result = blankFrame->Init(mContent, this, nsnull);
if (NS_FAILED(result)) {
blankFrame->Destroy();
return result;
}
mFrames.AppendFrame(nsnull, blankFrame);
mChildTypes[mChildCount] = BLANK;
mChildBorderColors[mChildCount].Set(NO_COLOR);
mChildCount++;
}
mNonBorderChildCount = mChildCount;
return rv;
}
NS_IMETHODIMP
nsHTMLFramesetFrame::SetInitialChildList(nsIAtom* aListName,
nsFrameList& aChildList)
{
// We do this weirdness where we create our child frames in Init(). On the
// other hand, we're going to get a SetInitialChildList() with an empty list
// and null list name after the frame constructor is done creating us. So
// just ignore that call.
if (!aListName && aChildList.IsEmpty()) {
return NS_OK;
}
return nsHTMLContainerFrame::SetInitialChildList(aListName, aChildList);
}
// XXX should this try to allocate twips based on an even pixel boundary?
void nsHTMLFramesetFrame::Scale(nscoord aDesired,
PRInt32 aNumIndicies,
PRInt32* aIndicies,
PRInt32 aNumItems,
PRInt32* aItems)
{
PRInt32 actual = 0;
PRInt32 i, j;
// get the actual total
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
actual += aItems[j];
}
if (actual > 0) {
float factor = (float)aDesired / (float)actual;
actual = 0;
// scale the items up or down
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
aItems[j] = NSToCoordRound((float)aItems[j] * factor);
actual += aItems[j];
}
} else if (aNumIndicies != 0) {
// All the specs say zero width, but we have to fill up space
// somehow. Distribute it equally.
nscoord width = NSToCoordRound((float)aDesired / (float)aNumIndicies);
actual = width * aNumIndicies;
for (i = 0; i < aNumIndicies; i++) {
aItems[aIndicies[i]] = width;
}
}
if (aNumIndicies > 0 && aDesired != actual) {
PRInt32 unit = (aDesired > actual) ? 1 : -1;
for (i=0; (i < aNumIndicies) && (aDesired != actual); i++) {
j = aIndicies[i];
if (j < aNumItems) {
aItems[j] += unit;
actual += unit;
}
}
}
}
/**
* Translate the rows/cols specs into an array of integer sizes for
* each cell in the frameset. Sizes are allocated based on the priorities of the
* specifier - fixed sizes have the highest priority, percentage sizes have the next
* highest priority and relative sizes have the lowest.
*/
void nsHTMLFramesetFrame::CalculateRowCol(nsPresContext* aPresContext,
nscoord aSize,
PRInt32 aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues)
{
// aNumSpecs maximum value is NS_MAX_FRAMESET_SPEC_COUNT
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(PRInt32));
PRInt32 fixedTotal = 0;
PRInt32 numFixed = 0;
nsAutoArrayPtr<PRInt32> fixed(new PRInt32[aNumSpecs]);
PRInt32 numPercent = 0;
nsAutoArrayPtr<PRInt32> percent(new PRInt32[aNumSpecs]);
PRInt32 relativeSums = 0;
PRInt32 numRelative = 0;
nsAutoArrayPtr<PRInt32> relative(new PRInt32[aNumSpecs]);
if (NS_UNLIKELY(!fixed || !percent || !relative)) {
return; // NS_ERROR_OUT_OF_MEMORY
}
PRInt32 i, j;
// initialize the fixed, percent, relative indices, allocate the fixed sizes and zero the others
for (i = 0; i < aNumSpecs; i++) {
aValues[i] = 0;
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aValues[i] = nsPresContext::CSSPixelsToAppUnits(aSpecs[i].mValue);
fixedTotal += aValues[i];
fixed[numFixed] = i;
numFixed++;
break;
case eFramesetUnit_Percent:
percent[numPercent] = i;
numPercent++;
break;
case eFramesetUnit_Relative:
relative[numRelative] = i;
numRelative++;
relativeSums += aSpecs[i].mValue;
break;
}
}
// scale the fixed sizes if they total too much (or too little and there aren't any percent or relative)
if ((fixedTotal > aSize) || ((fixedTotal < aSize) && (0 == numPercent) && (0 == numRelative))) {
Scale(aSize, numFixed, fixed, aNumSpecs, aValues);
return;
}
PRInt32 percentMax = aSize - fixedTotal;
PRInt32 percentTotal = 0;
// allocate the percentage sizes from what is left over from the fixed allocation
for (i = 0; i < numPercent; i++) {
j = percent[i];
aValues[j] = NSToCoordRound((float)aSpecs[j].mValue * (float)aSize / 100.0f);
percentTotal += aValues[j];
}
// scale the percent sizes if they total too much (or too little and there aren't any relative)
if ((percentTotal > percentMax) || ((percentTotal < percentMax) && (0 == numRelative))) {
Scale(percentMax, numPercent, percent, aNumSpecs, aValues);
return;
}
PRInt32 relativeMax = percentMax - percentTotal;
PRInt32 relativeTotal = 0;
// allocate the relative sizes from what is left over from the percent allocation
for (i = 0; i < numRelative; i++) {
j = relative[i];
aValues[j] = NSToCoordRound((float)aSpecs[j].mValue * (float)relativeMax / (float)relativeSums);
relativeTotal += aValues[j];
}
// scale the relative sizes if they take up too much or too little
if (relativeTotal != relativeMax) {
Scale(relativeMax, numRelative, relative, aNumSpecs, aValues);
}
}
/**
* Translate the rows/cols integer sizes into an array of specs for
* each cell in the frameset. Reverse of CalculateRowCol() behaviour.
* This allows us to maintain the user size info through reflows.
*/
void nsHTMLFramesetFrame::GenerateRowCol(nsPresContext* aPresContext,
nscoord aSize,
PRInt32 aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues,
nsString& aNewAttr)
{
PRInt32 i;
for (i = 0; i < aNumSpecs; i++) {
if (!aNewAttr.IsEmpty())
aNewAttr.Append(PRUnichar(','));
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aNewAttr.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(aValues[i]));
break;
case eFramesetUnit_Percent: // XXX Only accurate to 1%, need 1 pixel
case eFramesetUnit_Relative:
// Add 0.5 to the percentage to make rounding work right.
aNewAttr.AppendInt(PRUint32((100.0*aValues[i])/aSize + 0.5));
aNewAttr.Append(PRUnichar('%'));
break;
}
}
}
PRInt32 nsHTMLFramesetFrame::GetBorderWidth(nsPresContext* aPresContext,
PRBool aTakeForcingIntoAccount)
{
PRBool forcing = mForceFrameResizability && aTakeForcingIntoAccount;
if (!forcing) {
nsFrameborder frameborder = GetFrameBorder();
if (frameborder == eFrameborder_No) {
return 0;
}
}
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::border);
if (attr) {
PRInt32 intVal = 0;
if (attr->Type() == nsAttrValue::eInteger) {
intVal = attr->GetIntegerValue();
if (intVal < 0) {
intVal = 0;
}
}
if (forcing && intVal == 0) {
intVal = DEFAULT_BORDER_WIDTH_PX;
}
return nsPresContext::CSSPixelsToAppUnits(intVal);
}
}
if (mParentBorderWidth > 0 ||
(mParentBorderWidth == 0 && !forcing)) {
return mParentBorderWidth;
}
return nsPresContext::CSSPixelsToAppUnits(DEFAULT_BORDER_WIDTH_PX);
}
PRIntn
nsHTMLFramesetFrame::GetSkipSides() const
{
return 0;
}
void
nsHTMLFramesetFrame::GetDesiredSize(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize)
{
nsHTMLFramesetFrame* framesetParent = GetFramesetParent(this);
if (nsnull == framesetParent) {
if (aPresContext->IsPaginated()) {
// XXX This needs to be changed when framesets paginate properly
aDesiredSize.width = aReflowState.availableWidth;
aDesiredSize.height = aReflowState.availableHeight;
} else {
nsRect area = aPresContext->GetVisibleArea();
aDesiredSize.width = area.width;
aDesiredSize.height= area.height;
}
} else {
nsSize size;
framesetParent->GetSizeOfChild(this, size);
aDesiredSize.width = size.width;
aDesiredSize.height = size.height;
}
}
nsHTMLFramesetFrame* nsHTMLFramesetFrame::GetFramesetParent(nsIFrame* aChild)
{
nsHTMLFramesetFrame* parent = nsnull;
nsIContent* content = aChild->GetContent();
if (content) {
nsCOMPtr<nsIContent> contentParent = content->GetParent();
if (contentParent && contentParent->IsHTML() &&
contentParent->Tag() == nsGkAtoms::frameset) {
nsIFrame* fptr = aChild->GetParent();
parent = (nsHTMLFramesetFrame*) fptr;
}
}
return parent;
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChildAt(PRInt32 aIndexInParent,
nsSize& aSize,
nsIntPoint& aCellIndex)
{
PRInt32 row = aIndexInParent / mNumCols;
PRInt32 col = aIndexInParent - (row * mNumCols); // remainder from dividing index by mNumCols
if ((row < mNumRows) && (col < mNumCols)) {
aSize.width = mColSizes[col];
aSize.height = mRowSizes[row];
aCellIndex.x = col;
aCellIndex.y = row;
} else {
aSize.width = aSize.height = 0;
aCellIndex.x = aCellIndex.y = 0;
}
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChild(nsIFrame* aChild,
nsSize& aSize)
{
// Reflow only creates children frames for <frameset> and <frame> content.
// this assumption is used here
int i = 0;
for (nsIFrame* child = mFrames.FirstChild(); child;
child = child->GetNextSibling()) {
if (aChild == child) {
nsIntPoint ignore;
GetSizeOfChildAt(i, aSize, ignore);
return;
}
i++;
}
aSize.width = 0;
aSize.height = 0;
}
NS_METHOD nsHTMLFramesetFrame::HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
if (mDragger) {
// the nsFramesetBorderFrame has captured NS_MOUSE_DOWN
switch (aEvent->message) {
case NS_MOUSE_MOVE:
MouseDrag(aPresContext, aEvent);
break;
case NS_MOUSE_BUTTON_UP:
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
static_cast<nsMouseEvent*>(aEvent)->button ==
nsMouseEvent::eLeftButton) {
EndMouseDrag(aPresContext);
}
break;
}
*aEventStatus = nsEventStatus_eConsumeNoDefault;
} else {
*aEventStatus = nsEventStatus_eIgnore;
}
return NS_OK;
}
NS_IMETHODIMP
nsHTMLFramesetFrame::GetCursor(const nsPoint& aPoint,
nsIFrame::Cursor& aCursor)
{
if (mDragger) {
aCursor.mCursor = (mDragger->mVertical) ? NS_STYLE_CURSOR_EW_RESIZE : NS_STYLE_CURSOR_NS_RESIZE;
} else {
aCursor.mCursor = NS_STYLE_CURSOR_DEFAULT;
}
return NS_OK;
}
NS_IMETHODIMP
nsHTMLFramesetFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
nsresult rv = nsHTMLContainerFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
NS_ENSURE_SUCCESS(rv, rv);
if (mDragger && aBuilder->IsForEventDelivery()) {
rv = aLists.Content()->AppendNewToTop(
new (aBuilder) nsDisplayEventReceiver(aBuilder, this));
}
return rv;
}
void
nsHTMLFramesetFrame::ReflowPlaceChild(nsIFrame* aChild,
nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsPoint& aOffset,
nsSize& aSize,
nsIntPoint* aCellIndex)
{
// reflow the child
nsHTMLReflowState reflowState(aPresContext, aReflowState, aChild, aSize);
nsHTMLReflowMetrics metrics;
metrics.width = aSize.width;
metrics.height= aSize.height;
nsReflowStatus status;
ReflowChild(aChild, aPresContext, metrics, reflowState, aOffset.x,
aOffset.y, 0, status);
NS_ASSERTION(NS_FRAME_IS_COMPLETE(status), "bad status");
// Place and size the child
metrics.width = aSize.width;
metrics.height = aSize.height;
FinishReflowChild(aChild, aPresContext, nsnull, metrics, aOffset.x, aOffset.y, 0);
}
static
nsFrameborder GetFrameBorderHelper(nsGenericHTMLElement* aContent)
{
if (nsnull != aContent) {
const nsAttrValue* attr = aContent->GetParsedAttr(nsGkAtoms::frameborder);
if (attr && attr->Type() == nsAttrValue::eEnum) {
switch (attr->GetEnumValue())
{
case NS_STYLE_FRAME_YES:
case NS_STYLE_FRAME_1:
return eFrameborder_Yes;
break;
case NS_STYLE_FRAME_NO:
case NS_STYLE_FRAME_0:
return eFrameborder_No;
break;
}
}
}
return eFrameborder_Notset;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder()
{
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return mParentFrameborder;
}
return result;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder(nsIContent* aContent)
{
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(aContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return GetFrameBorder();
}
return result;
}
nscolor nsHTMLFramesetFrame::GetBorderColor()
{
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return mParentBorderColor;
}
nscolor nsHTMLFramesetFrame::GetBorderColor(nsIContent* aContent)
{
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(aContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return GetBorderColor();
}
NS_IMETHODIMP
nsHTMLFramesetFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
nsIPresShell *shell = aPresContext->PresShell();
nsStyleSet *styleSet = shell->StyleSet();
mParent->AddStateBits(NS_FRAME_CONTAINS_RELATIVE_HEIGHT);
//printf("FramesetFrame2::Reflow %X (%d,%d) \n", this, aReflowState.availableWidth, aReflowState.availableHeight);
// Always get the size so that the caller knows how big we are
GetDesiredSize(aPresContext, aReflowState, aDesiredSize);
nscoord width = (aDesiredSize.width <= aReflowState.availableWidth)
? aDesiredSize.width : aReflowState.availableWidth;
nscoord height = (aDesiredSize.height <= aReflowState.availableHeight)
? aDesiredSize.height : aReflowState.availableHeight;
PRBool firstTime = (GetStateBits() & NS_FRAME_FIRST_REFLOW) != 0;
if (firstTime) {
nsContentUtils::RegisterPrefCallback(kFrameResizePref,
FrameResizePrefCallback, this);
mForceFrameResizability =
nsContentUtils::GetBoolPref(kFrameResizePref);
}
// subtract out the width of all of the potential borders. There are
// only borders between <frame>s. There are none on the edges (e.g the
// leftmost <frame> has no left border).
PRInt32 borderWidth = GetBorderWidth(aPresContext, PR_TRUE);
width -= (mNumCols - 1) * borderWidth;
if (width < 0) width = 0;
height -= (mNumRows - 1) * borderWidth;
if (height < 0) height = 0;
nsCOMPtr<nsIFrameSetElement> ourContent(do_QueryInterface(mContent));
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nsnull;
const nsFramesetSpec* colSpecs = nsnull;
PRInt32 rows = 0;
PRInt32 cols = 0;
ourContent->GetRowSpec(&rows, &rowSpecs);
ourContent->GetColSpec(&cols, &colSpecs);
// If the number of cols or rows has changed, the frame for the frameset
// will be re-created.
if (mNumRows != rows || mNumCols != cols) {
aStatus = NS_FRAME_COMPLETE;
mDrag.UnSet();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return NS_OK;
}
CalculateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes);
CalculateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes);
nsAutoArrayPtr<PRBool> verBordersVis; // vertical borders visibility
nsAutoArrayPtr<nscolor> verBorderColors;
nsAutoArrayPtr<PRBool> horBordersVis; // horizontal borders visibility
nsAutoArrayPtr<nscolor> horBorderColors;
nscolor borderColor = GetBorderColor();
nsFrameborder frameborder = GetFrameBorder();
if (firstTime) {
// Check for overflow in memory allocations using mNumCols and mNumRows
// which have a maxium value of NS_MAX_FRAMESET_SPEC_COUNT.
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(PRBool));
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscolor));
verBordersVis = new PRBool[mNumCols];
NS_ENSURE_TRUE(verBordersVis, NS_ERROR_OUT_OF_MEMORY);
verBorderColors = new nscolor[mNumCols];
NS_ENSURE_TRUE(verBorderColors, NS_ERROR_OUT_OF_MEMORY);
for (int verX = 0; verX < mNumCols; verX++) {
verBordersVis[verX] = PR_FALSE;
verBorderColors[verX] = NO_COLOR;
}
horBordersVis = new PRBool[mNumRows];
NS_ENSURE_TRUE(horBordersVis, NS_ERROR_OUT_OF_MEMORY);
horBorderColors = new nscolor[mNumRows];
NS_ENSURE_TRUE(horBorderColors, NS_ERROR_OUT_OF_MEMORY);
for (int horX = 0; horX < mNumRows; horX++) {
horBordersVis[horX] = PR_FALSE;
horBorderColors[horX] = NO_COLOR;
}
}
// reflow the children
PRInt32 lastRow = 0;
PRInt32 lastCol = 0;
PRInt32 borderChildX = mNonBorderChildCount; // index of border children
nsHTMLFramesetBorderFrame* borderFrame = nsnull;
nsPoint offset(0,0);
nsSize size, lastSize;
nsIFrame* child = mFrames.FirstChild();
for (PRInt32 childX = 0; childX < mNonBorderChildCount; childX++) {
nsIntPoint cellIndex;
GetSizeOfChildAt(childX, size, cellIndex);
if (lastRow != cellIndex.y) { // changed to next row
offset.x = 0;
offset.y += lastSize.height;
if (firstTime) { // create horizontal border
nsRefPtr<nsStyleContext> pseudoStyleContext;
pseudoStyleContext = styleSet->
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::horizontalFramesetBorder,
mStyleContext);
borderFrame = new (shell) nsHTMLFramesetBorderFrame(pseudoStyleContext,
borderWidth,
PR_FALSE,
PR_FALSE);
if (NS_LIKELY(borderFrame != nsnull)) {
borderFrame->Init(mContent, this, nsnull);
mChildCount++;
mFrames.AppendFrame(nsnull, borderFrame);
mHorBorders[cellIndex.y-1] = borderFrame;
// set the neighbors for determining drag boundaries
borderFrame->mPrevNeighbor = lastRow;
borderFrame->mNextNeighbor = cellIndex.y;
}
} else {
borderFrame = (nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX);
if (NS_LIKELY(borderFrame != nsnull)) {
borderFrame->mWidth = borderWidth;
borderChildX++;
}
}
if (NS_LIKELY(borderFrame != nsnull)) {
nsSize borderSize(aDesiredSize.width, borderWidth);
ReflowPlaceChild(borderFrame, aPresContext, aReflowState, offset, borderSize);
borderFrame = nsnull;
}
offset.y += borderWidth;
} else {
if (cellIndex.x > 0) { // moved to next col in same row
if (0 == cellIndex.y) { // in 1st row
if (firstTime) { // create vertical border
nsRefPtr<nsStyleContext> pseudoStyleContext;
pseudoStyleContext = styleSet->
ResolveAnonymousBoxStyle(nsCSSAnonBoxes::verticalFramesetBorder,
mStyleContext);
borderFrame = new (shell) nsHTMLFramesetBorderFrame(pseudoStyleContext,
borderWidth,
PR_TRUE,
PR_FALSE);
if (NS_LIKELY(borderFrame != nsnull)) {
borderFrame->Init(mContent, this, nsnull);
mChildCount++;
mFrames.AppendFrame(nsnull, borderFrame);
mVerBorders[cellIndex.x-1] = borderFrame;
// set the neighbors for determining drag boundaries
borderFrame->mPrevNeighbor = lastCol;
borderFrame->mNextNeighbor = cellIndex.x;
}
} else {
borderFrame = (nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX);
if (NS_LIKELY(borderFrame != nsnull)) {
borderFrame->mWidth = borderWidth;
borderChildX++;
}
}
if (NS_LIKELY(borderFrame != nsnull)) {
nsSize borderSize(borderWidth, aDesiredSize.height);
ReflowPlaceChild(borderFrame, aPresContext, aReflowState, offset, borderSize);
borderFrame = nsnull;
}
}
offset.x += borderWidth;
}
}
ReflowPlaceChild(child, aPresContext, aReflowState, offset, size, &cellIndex);
if (firstTime) {
PRInt32 childVis;
if (FRAMESET == mChildTypes[childX]) {
nsHTMLFramesetFrame* childFS = (nsHTMLFramesetFrame*)child;
childVis = childFS->mEdgeVisibility;
mChildBorderColors[childX] = childFS->mEdgeColors;
} else if (FRAME == mChildTypes[childX]) {
if (eFrameborder_Yes == mChildFrameborder[childX]) {
childVis = ALL_VIS;
} else if (eFrameborder_No == mChildFrameborder[childX]) {
childVis = NONE_VIS;
} else { // notset
childVis = (eFrameborder_No == frameborder) ? NONE_VIS : ALL_VIS;
}
} else { // blank
childVis = NONE_VIS;
}
nsBorderColor childColors = mChildBorderColors[childX];
// set the visibility, color of our edge borders based on children
if (0 == cellIndex.x) {
if (!(mEdgeVisibility & LEFT_VIS)) {
mEdgeVisibility |= (LEFT_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mLeft) {
mEdgeColors.mLeft = childColors.mLeft;
}
}
if (0 == cellIndex.y) {
if (!(mEdgeVisibility & TOP_VIS)) {
mEdgeVisibility |= (TOP_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mTop) {
mEdgeColors.mTop = childColors.mTop;
}
}
if (mNumCols-1 == cellIndex.x) {
if (!(mEdgeVisibility & RIGHT_VIS)) {
mEdgeVisibility |= (RIGHT_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mRight) {
mEdgeColors.mRight = childColors.mRight;
}
}
if (mNumRows-1 == cellIndex.y) {
if (!(mEdgeVisibility & BOTTOM_VIS)) {
mEdgeVisibility |= (BOTTOM_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mBottom) {
mEdgeColors.mBottom = childColors.mBottom;
}
}
// set the visibility of borders that the child may affect
if (childVis & RIGHT_VIS) {
verBordersVis[cellIndex.x] = PR_TRUE;
}
if (childVis & BOTTOM_VIS) {
horBordersVis[cellIndex.y] = PR_TRUE;
}
if ((cellIndex.x > 0) && (childVis & LEFT_VIS)) {
verBordersVis[cellIndex.x-1] = PR_TRUE;
}
if ((cellIndex.y > 0) && (childVis & TOP_VIS)) {
horBordersVis[cellIndex.y-1] = PR_TRUE;
}
// set the colors of borders that the child may affect
if (NO_COLOR == verBorderColors[cellIndex.x]) {
verBorderColors[cellIndex.x] = mChildBorderColors[childX].mRight;
}
if (NO_COLOR == horBorderColors[cellIndex.y]) {
horBorderColors[cellIndex.y] = mChildBorderColors[childX].mBottom;
}
if ((cellIndex.x > 0) && (NO_COLOR == verBorderColors[cellIndex.x-1])) {
verBorderColors[cellIndex.x-1] = mChildBorderColors[childX].mLeft;
}
if ((cellIndex.y > 0) && (NO_COLOR == horBorderColors[cellIndex.y-1])) {
horBorderColors[cellIndex.y-1] = mChildBorderColors[childX].mTop;
}
}
lastRow = cellIndex.y;
lastCol = cellIndex.x;
lastSize = size;
offset.x += size.width;
child = child->GetNextSibling();
}
if (firstTime) {
nscolor childColor;
// set the visibility, color, mouse sensitivity of borders
for (int verX = 0; verX < mNumCols-1; verX++) {
if (mVerBorders[verX]) {
mVerBorders[verX]->SetVisibility(verBordersVis[verX]);
if (mForceFrameResizability) {
mVerBorders[verX]->mVisibilityOverride = PR_TRUE;
} else {
SetBorderResize(mChildTypes, mVerBorders[verX]);
}
childColor = (NO_COLOR == verBorderColors[verX]) ? borderColor : verBorderColors[verX];
mVerBorders[verX]->SetColor(childColor);
}
}
for (int horX = 0; horX < mNumRows-1; horX++) {
if (mHorBorders[horX]) {
mHorBorders[horX]->SetVisibility(horBordersVis[horX]);
if (mForceFrameResizability) {
mHorBorders[horX]->mVisibilityOverride = PR_TRUE;
} else {
SetBorderResize(mChildTypes, mHorBorders[horX]);
}
childColor = (NO_COLOR == horBorderColors[horX]) ? borderColor : horBorderColors[horX];
mHorBorders[horX]->SetColor(childColor);
}
}
delete[] mChildTypes;
delete[] mChildFrameborder;
delete[] mChildBorderColors;
mChildTypes = nsnull;
mChildFrameborder = nsnull;
mChildBorderColors = nsnull;
}
aStatus = NS_FRAME_COMPLETE;
mDrag.UnSet();
aDesiredSize.SetOverflowAreasToDesiredBounds();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return NS_OK;
}
nsIAtom*
nsHTMLFramesetFrame::GetType() const
{
return nsGkAtoms::frameSetFrame;
}
#ifdef DEBUG
NS_IMETHODIMP
nsHTMLFramesetFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("Frameset"), aResult);
}
#endif
PRBool
nsHTMLFramesetFrame::IsLeaf() const
{
// We handle constructing our kids manually
return PR_TRUE;
}
PRBool
nsHTMLFramesetFrame::ChildIsFrameset(nsIFrame* aChild)
{
nsHTMLFramesetFrame* childFrame = do_QueryFrame(aChild);
if (childFrame) {
return PR_TRUE;
}
return PR_FALSE;
}
PRBool
nsHTMLFramesetFrame::CanResize(PRBool aVertical,
PRBool aLeft)
{
nsIFrame* child;
PRInt32 childX;
PRInt32 startX;
if (aVertical) {
startX = (aLeft) ? 0 : mNumCols-1;
for (childX = startX; childX < mNonBorderChildCount; childX += mNumCols) {
child = mFrames.FrameAt(childX);
if (!CanChildResize(aVertical, aLeft, childX, ChildIsFrameset(child))) {
return PR_FALSE;
}
}
} else {
startX = (aLeft) ? 0 : (mNumRows - 1) * mNumCols;
PRInt32 endX = startX + mNumCols;
for (childX = startX; childX < endX; childX++) {
child = mFrames.FrameAt(childX);
if (!CanChildResize(aVertical, aLeft, childX, ChildIsFrameset(child))) {
return PR_FALSE;
}
}
}
return PR_TRUE;
}
PRBool
nsHTMLFramesetFrame::GetNoResize(nsIFrame* aChildFrame)
{
nsIContent* content = aChildFrame->GetContent();
return content && content->HasAttr(kNameSpaceID_None, nsGkAtoms::noresize);
}
PRBool
nsHTMLFramesetFrame::CanChildResize(PRBool aVertical,
PRBool aLeft,
PRInt32 aChildX,
PRBool aFrameset)
{
nsIFrame* child = mFrames.FrameAt(aChildX);
if (aFrameset) {
NS_ASSERTION(ChildIsFrameset(child), "Child frame is not a frameset!");
return ((nsHTMLFramesetFrame*)child)->CanResize(aVertical, aLeft);
} else {
return !GetNoResize(child);
}
}
// This calculates and sets the resizability of all border frames
void
nsHTMLFramesetFrame::RecalculateBorderResize()
{
if (!mContent) {
return;
}
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT < PR_INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT);
PRInt32 numCells = mNumRows * mNumCols; // max number of cells
PR_STATIC_ASSERT(NS_MAX_FRAMESET_SPEC_COUNT
< UINT_MAX / sizeof(PRInt32) / NS_MAX_FRAMESET_SPEC_COUNT);
nsAutoArrayPtr<PRInt32> childTypes(new PRInt32[numCells]);
if (NS_UNLIKELY(!childTypes)) {
return;
}
PRUint32 childIndex, childTypeIndex = 0;
// number of any type of children
PRUint32 numChildren = mContent->GetChildCount();
for (childIndex = 0; childIndex < numChildren; childIndex++) {
nsIContent *child = mContent->GetChildAt(childIndex);
if (child->IsHTML()) {
nsINodeInfo *ni = child->NodeInfo();
if (ni->Equals(nsGkAtoms::frameset)) {
childTypes[childTypeIndex++] = FRAMESET;
} else if (ni->Equals(nsGkAtoms::frame)) {
childTypes[childTypeIndex++] = FRAME;
}
// Don't overflow childTypes array
if (((PRInt32)childTypeIndex) >= numCells) {
break;
}
}
}
for (; childTypeIndex < numCells; ++childTypeIndex) {
childTypes[childTypeIndex] = BLANK;
}
// set the visibility and mouse sensitivity of borders
PRInt32 verX;
for (verX = 0; verX < mNumCols-1; verX++) {
if (mVerBorders[verX]) {
mVerBorders[verX]->mCanResize = PR_TRUE;
if (mForceFrameResizability) {
mVerBorders[verX]->mVisibilityOverride = PR_TRUE;
} else {
mVerBorders[verX]->mVisibilityOverride = PR_FALSE;
SetBorderResize(childTypes, mVerBorders[verX]);
}
}
}
PRInt32 horX;
for (horX = 0; horX < mNumRows-1; horX++) {
if (mHorBorders[horX]) {
mHorBorders[horX]->mCanResize = PR_TRUE;
if (mForceFrameResizability) {
mHorBorders[horX]->mVisibilityOverride = PR_TRUE;
} else {
mHorBorders[horX]->mVisibilityOverride = PR_FALSE;
SetBorderResize(childTypes, mHorBorders[horX]);
}
}
}
}
void
nsHTMLFramesetFrame::SetBorderResize(PRInt32* aChildTypes,
nsHTMLFramesetBorderFrame* aBorderFrame)
{
if (aBorderFrame->mVertical) {
for (int rowX = 0; rowX < mNumRows; rowX++) {
PRInt32 childX = aBorderFrame->mPrevNeighbor + (rowX * mNumCols);
if (!CanChildResize(PR_TRUE, PR_FALSE, childX, (FRAMESET == aChildTypes[childX])) ||
!CanChildResize(PR_TRUE, PR_TRUE, childX+1,(FRAMESET == aChildTypes[childX+1]))) {
aBorderFrame->mCanResize = PR_FALSE;
}
}
} else {
PRInt32 childX = aBorderFrame->mPrevNeighbor * mNumCols;
PRInt32 endX = childX + mNumCols;
for (; childX < endX; childX++) {
if (!CanChildResize(PR_FALSE, PR_FALSE, childX, (FRAMESET == aChildTypes[childX]))) {
aBorderFrame->mCanResize = PR_FALSE;
}
}
endX = endX + mNumCols;
for (; childX < endX; childX++) {
if (!CanChildResize(PR_FALSE, PR_TRUE, childX, (FRAMESET == aChildTypes[childX]))) {
aBorderFrame->mCanResize = PR_FALSE;
}
}
}
}
void
nsHTMLFramesetFrame::StartMouseDrag(nsPresContext* aPresContext,
nsHTMLFramesetBorderFrame* aBorder,
nsGUIEvent* aEvent)
{
#if 0
PRInt32 index;
IndexOf(aBorder, index);
NS_ASSERTION((nsnull != aBorder) && (index >= 0), "invalid dragger");
#endif
nsIPresShell::SetCapturingContent(GetContent(), CAPTURE_IGNOREALLOWED);
mDragger = aBorder;
mFirstDragPoint = aEvent->refPoint;
// Store the original frame sizes
if (mDragger->mVertical) {
mPrevNeighborOrigSize = mColSizes[mDragger->mPrevNeighbor];
mNextNeighborOrigSize = mColSizes[mDragger->mNextNeighbor];
} else {
mPrevNeighborOrigSize = mRowSizes[mDragger->mPrevNeighbor];
mNextNeighborOrigSize = mRowSizes[mDragger->mNextNeighbor];
}
gDragInProgress = PR_TRUE;
}
void
nsHTMLFramesetFrame::MouseDrag(nsPresContext* aPresContext,
nsGUIEvent* aEvent)
{
// if the capture ended, reset the drag state
if (nsIPresShell::GetCapturingContent() != GetContent()) {
mDragger = nsnull;
gDragInProgress = PR_FALSE;
return;
}
PRInt32 change; // measured positive from left-to-right or top-to-bottom
nsWeakFrame weakFrame(this);
if (mDragger->mVertical) {
change = aPresContext->DevPixelsToAppUnits(aEvent->refPoint.x - mFirstDragPoint.x);
if (change > mNextNeighborOrigSize - mMinDrag) {
change = mNextNeighborOrigSize - mMinDrag;
} else if (change <= mMinDrag - mPrevNeighborOrigSize) {
change = mMinDrag - mPrevNeighborOrigSize;
}
mColSizes[mDragger->mPrevNeighbor] = mPrevNeighborOrigSize + change;
mColSizes[mDragger->mNextNeighbor] = mNextNeighborOrigSize - change;
if (change != 0) {
// Recompute the specs from the new sizes.
nscoord width = mRect.width - (mNumCols - 1) * GetBorderWidth(aPresContext, PR_TRUE);
nsCOMPtr<nsIFrameSetElement> ourContent(do_QueryInterface(mContent));
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* colSpecs = nsnull;
ourContent->GetColSpec(&mNumCols, &colSpecs);
nsAutoString newColAttr;
GenerateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes,
newColAttr);
// Setting the attr will trigger a reflow
mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::cols, newColAttr, PR_TRUE);
}
} else {
change = aPresContext->DevPixelsToAppUnits(aEvent->refPoint.y - mFirstDragPoint.y);
if (change > mNextNeighborOrigSize - mMinDrag) {
change = mNextNeighborOrigSize - mMinDrag;
} else if (change <= mMinDrag - mPrevNeighborOrigSize) {
change = mMinDrag - mPrevNeighborOrigSize;
}
mRowSizes[mDragger->mPrevNeighbor] = mPrevNeighborOrigSize + change;
mRowSizes[mDragger->mNextNeighbor] = mNextNeighborOrigSize - change;
if (change != 0) {
// Recompute the specs from the new sizes.
nscoord height = mRect.height - (mNumRows - 1) * GetBorderWidth(aPresContext, PR_TRUE);
nsCOMPtr<nsIFrameSetElement> ourContent(do_QueryInterface(mContent));
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nsnull;
ourContent->GetRowSpec(&mNumRows, &rowSpecs);
nsAutoString newRowAttr;
GenerateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes,
newRowAttr);
// Setting the attr will trigger a reflow
mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::rows, newRowAttr, PR_TRUE);
}
}
ENSURE_TRUE(weakFrame.IsAlive());
if (change != 0) {
mDrag.Reset(mDragger->mVertical, mDragger->mPrevNeighbor, change, this);
nsIFrame* parentFrame = GetParent();
if (!parentFrame) {
return;
}
// Update the view immediately (make drag appear snappier)
nsIViewManager* vm = aPresContext->GetPresShell()->GetViewManager();
if (vm) {
nsIView* root = vm->GetRootView();
if (root) {
vm->UpdateView(root, NS_VMREFRESH_IMMEDIATE);
}
}
}
}
void
nsHTMLFramesetFrame::EndMouseDrag(nsPresContext* aPresContext)
{
nsIPresShell::SetCapturingContent(nsnull, 0);
mDragger = nsnull;
gDragInProgress = PR_FALSE;
}
nsIFrame*
NS_NewHTMLFramesetFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
#ifdef DEBUG
const nsStyleDisplay* disp = aContext->GetStyleDisplay();
NS_ASSERTION(!disp->IsAbsolutelyPositioned() && !disp->IsFloating(),
"Framesets should not be positioned and should not float");
#endif
return new (aPresShell) nsHTMLFramesetFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetFrame)
/*******************************************************************************
* nsHTMLFramesetBorderFrame
******************************************************************************/
nsHTMLFramesetBorderFrame::nsHTMLFramesetBorderFrame(nsStyleContext* aContext,
PRInt32 aWidth,
PRBool aVertical,
PRBool aVisibility)
: nsLeafFrame(aContext), mWidth(aWidth), mVertical(aVertical), mVisibility(aVisibility)
{
mVisibilityOverride = PR_FALSE;
mCanResize = PR_TRUE;
mColor = NO_COLOR;
mPrevNeighbor = 0;
mNextNeighbor = 0;
}
nsHTMLFramesetBorderFrame::~nsHTMLFramesetBorderFrame()
{
//printf("nsHTMLFramesetBorderFrame destructor %p \n", this);
}
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetBorderFrame)
nscoord nsHTMLFramesetBorderFrame::GetIntrinsicWidth()
{
// No intrinsic width
return 0;
}
nscoord nsHTMLFramesetBorderFrame::GetIntrinsicHeight()
{
// No intrinsic height
return 0;
}
void nsHTMLFramesetBorderFrame::SetVisibility(PRBool aVisibility)
{
mVisibility = aVisibility;
}
void nsHTMLFramesetBorderFrame::SetColor(nscolor aColor)
{
mColor = aColor;
}
NS_IMETHODIMP
nsHTMLFramesetBorderFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetBorderFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
// Override Reflow(), since we don't want to deal with what our
// computed values are.
SizeToAvailSize(aReflowState, aDesiredSize);
aDesiredSize.SetOverflowAreasToDesiredBounds();
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
class nsDisplayFramesetBorder : public nsDisplayItem {
public:
nsDisplayFramesetBorder(nsDisplayListBuilder* aBuilder,
nsHTMLFramesetBorderFrame* aFrame)
: nsDisplayItem(aBuilder, aFrame) {
MOZ_COUNT_CTOR(nsDisplayFramesetBorder);
}
#ifdef NS_BUILD_REFCNT_LOGGING
virtual ~nsDisplayFramesetBorder() {
MOZ_COUNT_DTOR(nsDisplayFramesetBorder);
}
#endif
// REVIEW: see old GetFrameForPoint
// Receives events in its bounds
virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) {
aOutFrames->AppendElement(mFrame);
}
virtual void Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx);
NS_DISPLAY_DECL_NAME("FramesetBorder", TYPE_FRAMESET_BORDER)
};
void nsDisplayFramesetBorder::Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx)
{
static_cast<nsHTMLFramesetBorderFrame*>(mFrame)->
PaintBorder(*aCtx, ToReferenceFrame());
}
NS_IMETHODIMP
nsHTMLFramesetBorderFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
return aLists.Content()->AppendNewToTop(
new (aBuilder) nsDisplayFramesetBorder(aBuilder, this));
}
void nsHTMLFramesetBorderFrame::PaintBorder(nsRenderingContext& aRenderingContext,
nsPoint aPt)
{
nscolor WHITE = NS_RGB(255, 255, 255);
nscolor bgColor = NS_RGB(200,200,200);
nscolor fgColor = NS_RGB(0,0,0);
nscolor hltColor = NS_RGB(255,255,255);
nscolor sdwColor = NS_RGB(128,128,128);
nsRenderingContext::AutoPushTranslation
translate(&aRenderingContext, aPt);
{
nsCOMPtr<nsILookAndFeel> lookAndFeel = do_GetService(kLookAndFeelCID);
if (lookAndFeel) {
lookAndFeel->GetColor(nsILookAndFeel::eColor_WidgetBackground, bgColor);
lookAndFeel->GetColor(nsILookAndFeel::eColor_WidgetForeground, fgColor);
lookAndFeel->GetColor(nsILookAndFeel::eColor_Widget3DShadow, sdwColor);
lookAndFeel->GetColor(nsILookAndFeel::eColor_Widget3DHighlight, hltColor);
}
}
nscoord widthInPixels = nsPresContext::AppUnitsToIntCSSPixels(mWidth);
nscoord pixelWidth = nsPresContext::CSSPixelsToAppUnits(1);
if (widthInPixels <= 0)
return;
nsPoint start(0,0);
nsPoint end((mVertical) ? 0 : mRect.width, (mVertical) ? mRect.height : 0);
nscolor color = WHITE;
if (mVisibility || mVisibilityOverride) {
color = (NO_COLOR == mColor) ? bgColor : mColor;
}
aRenderingContext.SetColor(color);
// draw grey or white first
for (int i = 0; i < widthInPixels; i++) {
aRenderingContext.DrawLine (start, end);
if (mVertical) {
start.x += pixelWidth;
end.x = start.x;
} else {
start.y += pixelWidth;
end.y = start.y;
}
}
if (!mVisibility && !mVisibilityOverride)
return;
if (widthInPixels >= 5) {
aRenderingContext.SetColor(hltColor);
start.x = (mVertical) ? pixelWidth : 0;
start.y = (mVertical) ? 0 : pixelWidth;
end.x = (mVertical) ? start.x : mRect.width;
end.y = (mVertical) ? mRect.height : start.y;
aRenderingContext.DrawLine(start, end);
}
if (widthInPixels >= 2) {
aRenderingContext.SetColor(sdwColor);
start.x = (mVertical) ? mRect.width - (2 * pixelWidth) : 0;
start.y = (mVertical) ? 0 : mRect.height - (2 * pixelWidth);
end.x = (mVertical) ? start.x : mRect.width;
end.y = (mVertical) ? mRect.height : start.y;
aRenderingContext.DrawLine(start, end);
}
if (widthInPixels >= 1) {
aRenderingContext.SetColor(fgColor);
start.x = (mVertical) ? mRect.width - pixelWidth : 0;
start.y = (mVertical) ? 0 : mRect.height - pixelWidth;
end.x = (mVertical) ? start.x : mRect.width;
end.y = (mVertical) ? mRect.height : start.y;
aRenderingContext.DrawLine(start, end);
}
}
NS_IMETHODIMP
nsHTMLFramesetBorderFrame::HandleEvent(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
*aEventStatus = nsEventStatus_eIgnore;
//XXX Mouse setting logic removed. The remaining logic should also move.
if (!mCanResize) {
return NS_OK;
}
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
aEvent->message == NS_MOUSE_BUTTON_DOWN &&
static_cast<nsMouseEvent*>(aEvent)->button == nsMouseEvent::eLeftButton) {
nsHTMLFramesetFrame* parentFrame;
nsIFrame* fptr = GetParent();
parentFrame = (nsHTMLFramesetFrame*) fptr;
parentFrame->StartMouseDrag(aPresContext, this, aEvent);
*aEventStatus = nsEventStatus_eConsumeNoDefault;
}
return NS_OK;
}
NS_IMETHODIMP
nsHTMLFramesetBorderFrame::GetCursor(const nsPoint& aPoint,
nsIFrame::Cursor& aCursor)
{
if (!mCanResize) {
aCursor.mCursor = NS_STYLE_CURSOR_DEFAULT;
} else {
aCursor.mCursor = (mVertical) ? NS_STYLE_CURSOR_EW_RESIZE : NS_STYLE_CURSOR_NS_RESIZE;
}
return NS_OK;
}
#ifdef DEBUG
NS_IMETHODIMP nsHTMLFramesetBorderFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("FramesetBorder"), aResult);
}
#endif
/*******************************************************************************
* nsHTMLFramesetBlankFrame
******************************************************************************/
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetBlankFrame)
nsHTMLFramesetBlankFrame::~nsHTMLFramesetBlankFrame()
{
//printf("nsHTMLFramesetBlankFrame destructor %p \n", this);
}
nscoord nsHTMLFramesetBlankFrame::GetIntrinsicWidth()
{
// No intrinsic width
return 0;
}
nscoord nsHTMLFramesetBlankFrame::GetIntrinsicHeight()
{
// No intrinsic height
return 0;
}
NS_IMETHODIMP
nsHTMLFramesetBlankFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetBlankFrame");
// Override Reflow(), since we don't want to deal with what our
// computed values are.
SizeToAvailSize(aReflowState, aDesiredSize);
aDesiredSize.SetOverflowAreasToDesiredBounds();
aStatus = NS_FRAME_COMPLETE;
return NS_OK;
}
class nsDisplayFramesetBlank : public nsDisplayItem {
public:
nsDisplayFramesetBlank(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame) :
nsDisplayItem(aBuilder, aFrame) {
MOZ_COUNT_CTOR(nsDisplayFramesetBlank);
}
#ifdef NS_BUILD_REFCNT_LOGGING
virtual ~nsDisplayFramesetBlank() {
MOZ_COUNT_DTOR(nsDisplayFramesetBlank);
}
#endif
virtual void Paint(nsDisplayListBuilder* aBuilder, nsRenderingContext* aCtx);
NS_DISPLAY_DECL_NAME("FramesetBlank", TYPE_FRAMESET_BLANK)
};
void nsDisplayFramesetBlank::Paint(nsDisplayListBuilder* aBuilder,
nsRenderingContext* aCtx)
{
nscolor white = NS_RGB(255,255,255);
aCtx->SetColor(white);
aCtx->FillRect(mVisibleRect);
}
#ifdef DEBUG
NS_IMETHODIMP nsHTMLFramesetBlankFrame::List(FILE* out,
PRInt32 aIndent) const
{
for (PRInt32 i = aIndent; --i >= 0; ) fputs(" ", out); // Indent
fprintf(out, "%p BLANK \n", (void*)this);
return nsLeafFrame::List(out, aIndent);
}
#endif
NS_IMETHODIMP
nsHTMLFramesetBlankFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
return aLists.Content()->AppendNewToTop(
new (aBuilder) nsDisplayFramesetBlank(aBuilder, this));
}
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