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4c2cc014646012ced2570c42618a3cfb61b705d8
tubestation/layout/base/nsCSSFrameConstructor.cpp
troy@netscape.com 4c2cc01464 Removed the :before and :after logic that would make the pseudo-elements 
siblings of the element, because the consensus seems to be that it shouldn't
work that way. Generated content is for container elements, and the generated
elements go before and after its child content
1999-04-22 14:31:19 +00:00

5304 lines
209 KiB
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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 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#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 "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 "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"
#ifdef INCLUDE_XUL
#include "nsXULAtoms.h"
#include "nsTriStateCheckboxFrame.h"
#include "nsSliderFrame.h"
#include "nsScrollbarFrame.h"
#include "nsSpinnerFrame.h"
#include "nsColorPickerFrame.h"
#include "nsFontPickerFrame.h"
#include "nsTreeFrame.h"
#include "nsToolboxFrame.h"
#include "nsToolbarFrame.h"
#include "nsTreeIndentationFrame.h"
#include "nsTreeCellFrame.h"
nsresult
NS_NewTabFrame ( nsIFrame*& aNewFrame );
nsresult
NS_NewDeckFrame ( nsIFrame*& aNewFrame );
nsresult
NS_NewProgressMeterFrame ( nsIFrame*& aNewFrame );
nsresult
NS_NewTitledButtonFrame ( nsIFrame*& aNewFrame );
nsresult
NS_NewBoxFrame ( 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(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();
nsFrameItems(nsIFrame* aFrame);
// Appends the frame to the end of the list
void AddChild(nsIFrame* aChild);
};
nsFrameItems::nsFrameItems()
: childList(nsnull), lastChild(nsnull)
{
}
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* const containingBlock;
nsAbsoluteItems(nsIFrame* aContainingBlock);
};
nsAbsoluteItems::nsAbsoluteItems(nsIFrame* aContainingBlock)
: containingBlock(aContainingBlock)
{
}
// -----------------------------------------------------------
// Structure used when creating table frames.
struct nsTableCreator {
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);
};
nsresult
nsTableCreator::CreateTableFrame(nsIFrame*& aNewFrame) {
return NS_NewTableFrame(aNewFrame);
}
nsresult
nsTableCreator::CreateTableRowGroupFrame(nsIFrame*& aNewFrame) {
return NS_NewTableRowGroupFrame(aNewFrame);
}
nsresult
nsTableCreator::CreateTableColFrame(nsIFrame*& aNewFrame) {
return NS_NewTableColFrame(aNewFrame);
}
nsresult
nsTableCreator::CreateTableColGroupFrame(nsIFrame*& aNewFrame) {
return NS_NewTableColGroupFrame(aNewFrame);
}
nsresult
nsTableCreator::CreateTableRowFrame(nsIFrame*& aNewFrame) {
return NS_NewTableRowFrame(aNewFrame);
}
nsresult
nsTableCreator::CreateTableCellFrame(nsIFrame*& aNewFrame) {
return NS_NewTableCellFrame(aNewFrame);
}
#ifdef INCLUDE_XUL
// Structure used when creating tree frames
struct nsTreeCreator: public nsTableCreator {
nsresult CreateTableFrame(nsIFrame*& aNewFrame);
nsresult CreateTableCellFrame(nsIFrame*& aNewFrame);
};
nsresult
nsTreeCreator::CreateTableFrame(nsIFrame*& aNewFrame)
{
return NS_NewTreeFrame(aNewFrame);
}
nsresult
nsTreeCreator::CreateTableCellFrame(nsIFrame*& aNewFrame)
{
return NS_NewTreeCellFrame(aNewFrame);
}
#endif // INCLUDE_XUL
// -----------------------------------------------------------
nsCSSFrameConstructor::nsCSSFrameConstructor(void)
: nsIStyleFrameConstruction(),
mDocument(nsnull),
mInitialContainingBlock(nsnull),
mFixedContainingBlock(nsnull),
mDocElementContainingBlock(nsnull)
{
NS_INIT_REFCNT();
#ifdef INCLUDE_XUL
nsXULAtoms::AddrefAtoms();
nsHTMLAtoms::AddrefAtoms();
#endif
}
nsCSSFrameConstructor::~nsCSSFrameConstructor(void)
{
#ifdef INCLUDE_XUL
nsXULAtoms::ReleaseAtoms();
nsHTMLAtoms::ReleaseAtoms();
#endif
}
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;
}
nsresult
nsCSSFrameConstructor::CreateGeneratedFrameFor(nsIPresContext* aPresContext,
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);
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);
// Create an image frame and initialize it
nsIFrame* imageFrame;
NS_NewImageFrame(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:
{ // XXX for now, prefetch the attr value, this needs to be a special content node
nsIAtom* attrName = NS_NewAtom(contentString);
aContent->GetAttribute(kNameSpaceID_None, attrName, contentString); // XXX need attr namespace from style
NS_RELEASE(attrName);
}
break;
case eStyleContentType_Counter:
case eStyleContentType_Counters:
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;
}
// Create a text content node
nsIContent* textContent;
nsIDOMCharacterData* domData;
NS_NewTextNode(&textContent);
textContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
domData->SetData(contentString);
NS_RELEASE(domData);
// Create a text frame and initialize it
nsIFrame* textFrame;
NS_NewTextFrame(textFrame);
textFrame->Init(*aPresContext, textContent, aParentFrame, aStyleContext, nsnull);
NS_RELEASE(textContent);
// Return the text frame
*aFrame = textFrame;
}
return NS_OK;
}
PRBool
nsCSSFrameConstructor::CreateGeneratedContentFrame(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIAtom* aPseudoElement,
nsIFrame** aResult)
{
*aResult = nsnull; // initialize OUT parameter
// Probe for the existence of the pseudo-element
nsIStyleContext* pseudoStyleContext;
aPresContext->ProbePseudoStyleContextFor(aContent, aPseudoElement, aStyleContext,
PR_FALSE, &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) {
// 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;
if (NS_STYLE_DISPLAY_BLOCK == displayValue) {
NS_NewBlockFrame(containerFrame, 0);
} else {
NS_NewInlineFrame(containerFrame);
}
containerFrame->Init(*aPresContext, aContent, aFrame, pseudoStyleContext, nsnull);
// 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, 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);
NS_RELEASE(pseudoStyleContext);
if (childFrames.childList) {
containerFrame->SetInitialChildList(*aPresContext, nsnull, childFrames.childList);
}
*aResult = containerFrame;
return PR_TRUE;
}
}
}
return PR_FALSE;
}
/**
* 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(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aFrame,
nsAbsoluteItems& aAbsoluteItems,
nsFrameItems& aFrameItems,
nsAbsoluteItems& aFixedItems,
nsAbsoluteItems& aFloatingItems,
PRBool aCanHaveGeneratedContent)
{
nsIStyleContext* styleContext = nsnull;
if (aCanHaveGeneratedContent) {
nsIFrame* generatedFrame;
// Probe for generated content before
aFrame->GetStyleContext(&styleContext);
if (CreateGeneratedContentFrame(aPresContext, aFrame, aContent, styleContext,
nsCSSAtoms::beforePseudo, &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
ConstructFrame(aPresContext, childContent, aFrame, aAbsoluteItems,
aFrameItems, aFixedItems, aFloatingItems);
}
}
if (aCanHaveGeneratedContent) {
nsIFrame* generatedFrame;
// Probe for generated content after
if (CreateGeneratedContentFrame(aPresContext, aFrame, aContent, styleContext,
nsCSSAtoms::afterPseudo, &generatedFrame)) {
// Add the generated frame to the child list
aFrameItems.AddChild(generatedFrame);
}
}
NS_IF_RELEASE(styleContext);
return NS_OK;
}
nsresult
nsCSSFrameConstructor::CreateInputFrame(nsIContent* aContent, nsIFrame*& aFrame)
{
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 = NS_NewButtonControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("reset")) {
rv = NS_NewButtonControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("button")) {
rv = NS_NewButtonControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("checkbox")) {
rv = NS_NewCheckboxControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("file")) {
rv = NS_NewFileControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("hidden")) {
rv = NS_NewButtonControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("image")) {
rv = NS_NewImageControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("password")) {
rv = NS_NewTextControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("radio")) {
rv = NS_NewRadioControlFrame(aFrame);
}
else if (val.EqualsIgnoreCase("text")) {
rv = NS_NewTextControlFrame(aFrame);
}
else {
rv = NS_NewTextControlFrame(aFrame);
}
} else {
rv = NS_NewTextControlFrame(aFrame);
}
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(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewFrame,
nsAbsoluteItems& aFixedItems,
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
NS_NewTableOuterFrame(aNewFrame);
// Init the table outer frame and see if we need to create a view, e.g.
// the frame is absolutely positioned
aNewFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext, nsnull);
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);
// This gets reset later, since there may also be a caption.
// It allows descendants to get at the inner frame before that
// XXX This is very wrong. You cannot call SetInitialChildList() more
// than once (see the nsIFrame header file). Either call it once only,
// _or_ move the caption out into a separate named child list...
// XXX The other things that's wrong here is that the calls to
// SetInitialChildList() are bottom-up, and the order is wrong...
aNewFrame->SetInitialChildList(*aPresContext, nsnull, innerFrame);
childList = innerFrame;
innerFrame->Init(*aPresContext, aContent, aNewFrame, aStyleContext, nsnull);
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(aPresContext, childContent, aNewFrame, childStyleContext,
aAbsoluteItems, ignore1, captionFrame, aFixedItems, 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(aPresContext, childContent, innerFrame, childStyleContext,
aAbsoluteItems, isRowGroup, childFrame, ignore1, aFixedItems, aTableCreator);
break;
}
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresContext, childContent, innerFrame, childStyleContext,
aAbsoluteItems, childFrame, ignore1, aFixedItems, aTableCreator);
break;
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresContext, childContent, innerFrame, childStyleContext,
aAbsoluteItems, childFrame, ignore1, aFixedItems, aTableCreator);
break;
case NS_STYLE_DISPLAY_TABLE_CELL:
rv = ConstructTableCellFrame(aPresContext, childContent, innerFrame, childStyleContext,
aAbsoluteItems, childFrame, ignore1, ignore2, aFixedItems, 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(aPresContext, childContent, innerFrame, parentStyleContext,
aAbsoluteItems, childItems, aFixedItems, 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 list of initial child frames
innerFrame->SetInitialChildList(*aPresContext, nsnull, innerChildList);
// Set the anonymous table outer frame's initial child list
aNewFrame->SetInitialChildList(*aPresContext, nsnull, childList);
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructAnonymousTableFrame (nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIFrame*& aNewTopFrame,
nsIFrame*& aOuterFrame,
nsIFrame*& aInnerFrame,
nsAbsoluteItems& aAbsoluteItems,
nsAbsoluteItems& aFixedItems,
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(aPresContext, aContent, aParentFrame, cellStyleContext, aAbsoluteItems,
aNewTopFrame, cellFrame, cellBodyFrame, aFixedItems, 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(aPresContext, aContent, aParentFrame, rowStyleContext,
aAbsoluteItems, aNewTopFrame, rowFrame, aFixedItems,
aTableCreator);
if (NS_FAILED(rv)) return rv;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresContext, aContent, rowFrame, cellStyleContext,
aAbsoluteItems, ignore, cellFrame, cellBodyFrame,
aFixedItems, 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(aPresContext, aContent, aParentFrame, groupStyleContext,
aAbsoluteItems, PR_TRUE, aNewTopFrame, groupFrame, aFixedItems,
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(aPresContext, aContent, aParentFrame, rowStyleContext,
aAbsoluteItems, ignore, rowFrame, aFixedItems,
aTableCreator);
if (NS_FAILED(rv)) return rv;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::tableCellPseudo, parentStyleContext,
PR_FALSE, getter_AddRefs(cellStyleContext));
rv = ConstructTableCellFrame(aPresContext, aContent, rowFrame, cellStyleContext,
aAbsoluteItems, ignore, cellFrame, cellBodyFrame,
aFixedItems, 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 = NS_NewTableOuterFrame(aOuterFrame);
if (NS_FAILED(rv)) return rv;
aOuterFrame->Init(*aPresContext, aContent, tableParent, outerStyleContext,
nsnull);
// 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;
aInnerFrame->Init(*aPresContext, aContent, aOuterFrame, innerStyleContext,
nsnull);
//XXX duplicated call here
aOuterFrame->SetInitialChildList(*aPresContext, nsnull, aInnerFrame);
if (cellIsParent) {
cellBodyFrame->SetInitialChildList(*aPresContext, nsnull, aOuterFrame);
} else {
aNewTopFrame = aOuterFrame;
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCaptionFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewCaptionFrame,
nsAbsoluteItems& aFixedItems,
nsTableCreator& aTableCreator)
{
nsresult rv = NS_NewAreaFrame(aNewCaptionFrame, 0);
if (NS_FAILED(rv)) return rv;
const nsStyleDisplay* parentDisplay = GetDisplay(aParentFrame);
nsIFrame* innerFrame;
if (NS_STYLE_DISPLAY_TABLE == parentDisplay->mDisplay) { // parent is an outer table
// determine the inner table frame, it is either aParentFrame or its first child
nsIFrame* parFrame = aParentFrame;
aParentFrame->FirstChild(nsnull, &innerFrame);
const nsStyleDisplay* innerDisplay;
innerFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct *&)innerDisplay);
if (NS_STYLE_DISPLAY_TABLE != innerDisplay->mDisplay) {
innerFrame = aParentFrame;
innerFrame->GetParent(&parFrame);
}
aNewCaptionFrame->Init(*aPresContext, aContent, parFrame, aStyleContext,
nsnull);
innerFrame->SetNextSibling(aNewCaptionFrame);
// the caller is responsible for calling SetInitialChildList on the outer, inner frames
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* outerFrame;
ConstructAnonymousTableFrame(aPresContext, aContent, aParentFrame, aNewTopFrame,
outerFrame, innerFrame, aAbsoluteItems, aFixedItems,
aTableCreator);
nsCOMPtr<nsIStyleContext> outerStyleContext;
outerFrame->GetStyleContext(getter_AddRefs(outerStyleContext));
nsCOMPtr<nsIStyleContext> adjStyleContext;
aPresContext->ResolveStyleContextFor(aContent, outerStyleContext,
PR_FALSE, getter_AddRefs(adjStyleContext));
aNewCaptionFrame->Init(*aPresContext, aContent, outerFrame,
adjStyleContext, nsnull);
innerFrame->SetNextSibling(aNewCaptionFrame);
//XXX duplicated call here
outerFrame->SetInitialChildList(*aPresContext, nsnull, innerFrame);
}
nsFrameItems childItems;
nsAbsoluteItems floatingKids(aNewCaptionFrame);
ProcessChildren(aPresContext, aContent, aNewCaptionFrame, aAbsoluteItems,
childItems, aFixedItems, floatingKids, PR_TRUE);
aNewCaptionFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
if (floatingKids.childList) {
aNewCaptionFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floatingKids.childList);
}
return rv;
}
// if aParentFrame is a table, it is assummed that it is an inner table
nsresult
nsCSSFrameConstructor::ConstructTableGroupFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
PRBool aIsRowGroup,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewGroupFrame,
nsAbsoluteItems& aFixedItems,
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");
}
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(aPresContext, aContent, aParentFrame, styleContext,
aAbsoluteItems, aIsRowGroup, aNewTopFrame, aNewGroupFrame,
aFixedItems, 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(aPresContext, aContent, aParentFrame, aNewTopFrame, outerFrame,
innerFrame, aAbsoluteItems, aFixedItems, 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(aPresContext, aContent, innerFrame, styleContext,
aAbsoluteItems, aIsRowGroup, topFrame, aNewGroupFrame,
aFixedItems, aTableCreator, contentDisplayIsGroup);
if (NS_FAILED(rv)) return rv;
if (contentDisplayIsGroup) { // called from above
innerFrame->SetInitialChildList(*aPresContext, nsnull, topFrame);
} else { // called from row below
aToDo->Set(innerFrame, topFrame);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableGroupFrameOnly(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
PRBool aIsRowGroup,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewGroupFrame,
nsAbsoluteItems& aFixedItems,
nsTableCreator& aTableCreator,
PRBool aProcessChildren)
{
nsresult rv = NS_OK;
const nsStyleDisplay* styleDisplay =
(const nsStyleDisplay*) aStyleContext->GetStyleData(eStyleStruct_Display);
if (IsScrollable(aPresContext, styleDisplay)) {
// Create a scroll frame and initialize it
rv = NS_NewScrollFrame(aNewTopFrame);
if (NS_FAILED(rv)) return rv;
aNewTopFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext, nsnull);
// The scroll frame gets the original style context, the scrolled frame gets
// a pseudo element style context that inherits the background properties
nsCOMPtr<nsIStyleContext> scrolledPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::scrolledContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(scrolledPseudoStyle));
// Create an area container for the frame
rv = (aIsRowGroup) ? aTableCreator.CreateTableRowGroupFrame(aNewGroupFrame)
: aTableCreator.CreateTableColGroupFrame(aNewGroupFrame);
if (NS_FAILED(rv)) return rv;
// Initialize the frame and force it to have a view
aNewGroupFrame->Init(*aPresContext, aContent, aNewTopFrame, scrolledPseudoStyle,
nsnull);
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, aNewGroupFrame,
scrolledPseudoStyle, PR_TRUE);
aNewTopFrame->SetInitialChildList(*aPresContext, nsnull, aNewGroupFrame);
} else {
rv = (aIsRowGroup) ? aTableCreator.CreateTableRowGroupFrame(aNewTopFrame)
: aTableCreator.CreateTableColGroupFrame(aNewTopFrame);
if (NS_FAILED(rv)) return rv;
aNewTopFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext,
nsnull);
aNewGroupFrame = aNewTopFrame;
}
if (aProcessChildren) {
nsFrameItems childItems;
if (aIsRowGroup) {
TableProcessChildren(aPresContext, aContent, aNewGroupFrame, aAbsoluteItems,
childItems, aFixedItems, aTableCreator);
} else {
nsAbsoluteItems floatingKids(nsnull);
ProcessChildren(aPresContext, aContent, aNewGroupFrame, aAbsoluteItems,
childItems, aFixedItems, floatingKids);
NS_ASSERTION(nsnull == floatingKids.childList, "floater in odd spot");
}
aNewGroupFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewRowFrame,
nsAbsoluteItems& aFixedItems,
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
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(aPresContext, aContent, aParentFrame, styleContext,
aAbsoluteItems, contentDisplayIsRow, aNewRowFrame,
aFixedItems, 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(aPresContext, aContent, aParentFrame, styleContext,
aAbsoluteItems, PR_TRUE, aNewTopFrame, groupFrame,
aFixedItems, 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(aPresContext, aContent, groupFrame, styleContext,
aAbsoluteItems, contentDisplayIsRow, aNewRowFrame,
aFixedItems, aTableCreator);
if (NS_FAILED(rv)) return rv;
groupFrame->SetInitialChildList(*aPresContext, nsnull, aNewRowFrame);
if (contentDisplayIsRow) { // called from above
TableProcessTableList(aPresContext, *toDo);
}
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableRowFrameOnly(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
PRBool aProcessChildren,
nsIFrame*& aNewRowFrame,
nsAbsoluteItems& aFixedItems,
nsTableCreator& aTableCreator)
{
nsresult rv = aTableCreator.CreateTableRowFrame(aNewRowFrame);
if (NS_FAILED(rv)) return rv;
aNewRowFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext,
nsnull);
if (aProcessChildren) {
nsFrameItems childItems;
rv = TableProcessChildren(aPresContext, aContent, aNewRowFrame, aAbsoluteItems,
childItems, aFixedItems, aTableCreator);
if (NS_FAILED(rv)) return rv;
aNewRowFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableColFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewColFrame,
nsAbsoluteItems& aFixedItems,
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(aPresContext, aContent, aParentFrame,
aStyleContext, aAbsoluteItems, aNewColFrame,
aFixedItems, aTableCreator);
aNewTopFrame = aNewColFrame;
} else { // construct anonymous col group frame
nsTableList toDo;
nsIFrame* groupFrame;
rv = ConstructTableGroupFrame(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, PR_FALSE, aNewTopFrame,
groupFrame, aFixedItems, 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(aPresContext, aContent, groupFrame,
styleContext, aAbsoluteItems, aNewColFrame,
aFixedItems, aTableCreator);
if (NS_FAILED(rv)) return rv;
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(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewColFrame,
nsAbsoluteItems& aFixedItems,
nsTableCreator& aTableCreator)
{
nsresult rv = aTableCreator.CreateTableColFrame(aNewColFrame);
if (NS_FAILED(rv)) return rv;
aNewColFrame->Init(*aPresContext, aContent, aParentFrame,
aStyleContext, nsnull);
nsFrameItems colChildItems;
nsAbsoluteItems floatingKids(nsnull);
rv = ProcessChildren(aPresContext, aContent, aNewColFrame, aAbsoluteItems,
colChildItems, aFixedItems, floatingKids);
NS_ASSERTION(nsnull == floatingKids.childList, "floater in odd spot");
if (NS_FAILED(rv)) return rv;
aNewColFrame->SetInitialChildList(*aPresContext, nsnull,
colChildItems.childList);
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCellFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewTopFrame,
nsIFrame*& aNewCellFrame,
nsIFrame*& aNewCellBodyFrame,
nsAbsoluteItems& aFixedItems,
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(aPresContext, aContent, aParentFrame, styleContext,
aAbsoluteItems, aNewCellFrame, aNewCellBodyFrame,
aFixedItems, 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(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, aNewTopFrame, rowFrame, aFixedItems,
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(aPresContext, aContent, rowFrame, styleContext,
aAbsoluteItems, aNewCellFrame, aNewCellBodyFrame,
aFixedItems, aTableCreator, aProcessChildren);
if (NS_FAILED(rv)) return rv;
rowFrame->SetInitialChildList(*aPresContext, nsnull, aNewCellFrame);
TableProcessTableList(aPresContext, toDo);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructTableCellFrameOnly(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewCellFrame,
nsIFrame*& aNewCellBodyFrame,
nsAbsoluteItems& aFixedItems,
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
aNewCellFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext,
nsnull);
// Create an area frame that will format the cell's content
rv = NS_NewAreaFrame(aNewCellBodyFrame, 0);
if (NS_FAILED(rv)) {
aNewCellFrame->DeleteFrame(*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));
aNewCellBodyFrame->Init(*aPresContext, aContent, aNewCellFrame,
bodyPseudoStyle, nsnull);
if (aProcessChildren) {
nsFrameItems childItems;
nsAbsoluteItems floaterList(aNewCellBodyFrame);
rv = ProcessChildren(aPresContext, aContent, aNewCellBodyFrame, aAbsoluteItems,
childItems, aFixedItems, floaterList, PR_TRUE);
if (NS_FAILED(rv)) return rv;
aNewCellBodyFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
if (floaterList.childList) {
aNewCellBodyFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.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(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsAbsoluteItems& aAbsoluteItems,
nsFrameItems& aChildItems,
nsAbsoluteItems& aFixedItems,
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));
aContent->ChildCount(count);
for (PRInt32 i = 0; i < count; i++) {
nsCOMPtr<nsIContent> childContent;
aContent->ChildAt(i, *getter_AddRefs(childContent));
rv = TableProcessChild(aPresContext, childContent, aParentFrame, parentStyleContext,
aAbsoluteItems, aChildItems, aFixedItems, aTableCreator);
}
return rv;
}
nsresult
nsCSSFrameConstructor::TableProcessChild(nsIPresContext* aPresContext,
nsIContent* aChildContent,
nsIFrame* aParentFrame,
nsIStyleContext* aParentStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsFrameItems& aChildItems,
nsAbsoluteItems& aFixedItems,
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 ( (childDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE) ||
(childDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_HEADER_GROUP) ||
(childDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW_GROUP) ||
(childDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP) ||
(childDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_ROW) ||
(childDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_COLUMN) ||
(childDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE_CELL) ) {
nsAbsoluteItems floaterList(nsnull);
rv = ConstructFrame(aPresContext, aChildContent, aParentFrame,
aAbsoluteItems, aChildItems, aFixedItems,
floaterList);
NS_ASSERTION(nsnull == floaterList.childList, "floater in odd spot");
} 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);
nsAbsoluteItems floaterList(nsnull);
if (parentDisplay->mDisplay == NS_STYLE_DISPLAY_TABLE) {
nsIFrame* outerFrame;
aParentFrame->GetParent(&outerFrame);
rv = ConstructFrame(aPresContext, aChildContent, outerFrame,
aAbsoluteItems, aChildItems, aFixedItems,
floaterList);
// XXX: Seems like this is going into the inner frame's child list instead of the outer frame. - DWH
} else {
rv = ConstructFrame(aPresContext, aChildContent, aParentFrame,
aAbsoluteItems, aChildItems, aFixedItems,
floaterList);
}
NS_ASSERTION(nsnull == floaterList.childList, "floater in odd spot");
// 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(aPresContext, aChildContent, aParentFrame, childStyleContext,
aAbsoluteItems, childFrame, cellFrame, cellBodyFrame,
aFixedItems, 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::checkbox == tag.get()) ||
(nsXULAtoms::tristatecheckbox == tag.get()) ||
(nsXULAtoms::slider == tag.get()) ||
(nsXULAtoms::spinner == tag.get()) ||
(nsXULAtoms::scrollbar == tag.get()) ||
(nsXULAtoms::colorpicker == tag.get()) ||
(nsXULAtoms::fontpicker == tag.get()) ||
(nsXULAtoms::radio == tag.get()) ||
(nsXULAtoms::text == tag.get()) ||
(nsXULAtoms::widget == tag.get()) ||
(nsXULAtoms::tree == tag.get()) ||
(nsXULAtoms::treechildren == tag.get()) ||
(nsXULAtoms::treeitem == tag.get()) ||
(nsXULAtoms::treecell == tag.get()) ||
(nsXULAtoms::treeindentation == tag.get()) ||
(nsXULAtoms::toolbox == tag.get()) ||
(nsXULAtoms::toolbar == tag.get()) ||
(nsXULAtoms::deck == tag.get()) ||
(nsXULAtoms::tabcontrol == tag.get()) ||
(nsXULAtoms::tabbox == tag.get()) ||
(nsXULAtoms::tabpanel == tag.get()) ||
(nsXULAtoms::tabpage == tag.get()) ||
(nsXULAtoms::progressmeter == 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(nsnull, &result);
}
return result;
}
// nsIAtom* pseudoTag;
// styleContext->GetPseudoType(pseudoTag);
// if (pseudoTag != nsHTMLAtoms::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;
}
/***********************************************
* END TABLE SECTION
***********************************************/
nsresult
nsCSSFrameConstructor::ConstructDocElementFrame(nsIPresContext* aPresContext,
nsIContent* aDocElement,
nsIFrame* aParentFrame,
nsIStyleContext* aParentStyleContext,
nsIFrame*& aNewFrame,
nsAbsoluteItems& aFixedItems)
{
// Resolve the style context for the document element
nsCOMPtr<nsIStyleContext> styleContext;
aPresContext->ResolveStyleContextFor(aDocElement, aParentStyleContext,
PR_FALSE,
getter_AddRefs(styleContext));
// See if we're paginated
PRBool isPaginated;
aPresContext->IsPaginated(&isPaginated);
if (isPaginated) {
// Create an area frame for the document element
nsIFrame* areaFrame;
NS_NewAreaFrame(areaFrame, 0);
areaFrame->Init(*aPresContext, aDocElement, aParentFrame, styleContext, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, areaFrame,
styleContext, PR_FALSE);
// The area frame is the "initial containing block"
mInitialContainingBlock = areaFrame;
// Process the child content
nsAbsoluteItems absoluteItems(areaFrame);
nsAbsoluteItems floaterList(areaFrame);
nsFrameItems childItems;
ProcessChildren(aPresContext, aDocElement, areaFrame, absoluteItems,
childItems, aFixedItems, floaterList, PR_TRUE);
// Set the initial child lists
areaFrame->SetInitialChildList(*aPresContext, nsnull,
childItems.childList);
if (nsnull != absoluteItems.childList) {
areaFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::absoluteList,
absoluteItems.childList);
}
if (floaterList.childList) {
areaFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
// Return the area frame
aNewFrame = areaFrame;
} else {
// Unless the 'overflow' policy forbids scrolling, wrap the frame in a
// scroll frame.
nsIFrame* scrollFrame = nsnull;
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
if (IsScrollable(aPresContext, display)) {
NS_NewScrollFrame(scrollFrame);
scrollFrame->Init(*aPresContext, aDocElement, aParentFrame, styleContext,
nsnull);
// The scrolled frame gets a pseudo element style context
nsCOMPtr<nsIStyleContext> scrolledPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(nsnull,
nsHTMLAtoms::scrolledContentPseudo,
styleContext,
PR_FALSE,
getter_AddRefs(scrolledPseudoStyle));
styleContext = scrolledPseudoStyle;
}
// Create an area frame for the document element. This serves as the
// "initial containing block"
nsIFrame* areaFrame;
// XXX Until we clean up how painting damage is handled, we need to use the
// flag that says that this is the body...
NS_NewAreaFrame(areaFrame, NS_BLOCK_DOCUMENT_ROOT|NS_BLOCK_MARGIN_ROOT);
areaFrame->Init(*aPresContext, aDocElement, scrollFrame ? scrollFrame :
aParentFrame, styleContext, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, areaFrame,
styleContext, PR_FALSE);
// The area frame is the "initial containing block"
mInitialContainingBlock = areaFrame;
// Process the child content
nsAbsoluteItems absoluteItems(areaFrame);
nsAbsoluteItems floatingItems(areaFrame);
nsFrameItems childItems;
ProcessChildren(aPresContext, aDocElement, areaFrame, absoluteItems,
childItems, aFixedItems, floatingItems, PR_TRUE);
// Set the initial child lists
areaFrame->SetInitialChildList(*aPresContext, nsnull,
childItems.childList);
if (nsnull != absoluteItems.childList) {
areaFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::absoluteList,
absoluteItems.childList);
}
if (nsnull != floatingItems.childList) {
areaFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floatingItems.childList);
}
if (nsnull != scrollFrame) {
scrollFrame->SetInitialChildList(*aPresContext, nsnull, areaFrame);
}
aNewFrame = scrollFrame ? scrollFrame : areaFrame;
}
return NS_OK;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ConstructRootFrame(nsIPresContext* aPresContext,
nsIContent* aDocElement,
nsIFrame*& aNewFrame)
{
#ifdef NS_DEBUG
nsCOMPtr<nsIDocument> doc;
nsIContent* rootContent;
// Verify that the content object is really the root content object
aDocElement->GetDocument(*getter_AddRefs(doc));
rootContent = doc->GetRootContent();
NS_ASSERTION(rootContent == aDocElement, "unexpected content");
NS_RELEASE(rootContent);
#endif
nsIFrame* viewportFrame;
nsCOMPtr<nsIStyleContext> viewportPseudoStyle;
// Create the viewport frame
NS_NewViewportFrame(viewportFrame);
// Create a pseudo element style context
aPresContext->ResolvePseudoStyleContextFor(nsnull, nsLayoutAtoms::viewportPseudo,
nsnull, PR_FALSE,
getter_AddRefs(viewportPseudoStyle));
// Initialize the viewport frame. It has a NULL content object
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(rootView);
// 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.
nsISupports* container;
if (nsnull != aPresContext) {
aPresContext->GetContainer(&container);
if (nsnull != container) {
nsIWebShell* webShell = nsnull;
container->QueryInterface(kIWebShellIID, (void**) &webShell);
if (nsnull != webShell) {
PRInt32 scrolling = -1;
webShell->GetScrolling(scrolling);
if (NS_STYLE_OVERFLOW_HIDDEN == scrolling) {
isScrollable = PR_FALSE;
}
NS_RELEASE(webShell);
}
NS_RELEASE(container);
}
}
// If the viewport should offer a scrolling mechanism, then create a
// scroll frame
nsIFrame* scrollFrame;
if (isScrollable) {
NS_NewScrollFrame(scrollFrame);
// XXX should probably be a scrolled content pseudo style context
scrollFrame->Init(*aPresContext, nsnull, viewportFrame, viewportPseudoStyle,
nsnull);
// Inform the view manager about the root scrollable view
nsIView* scrollFrameView;
nsIScrollableView* scrollingView;
scrollFrame->GetView(&scrollFrameView);
NS_ASSERTION(scrollFrameView, "scroll frame has no view");
scrollFrameView->QueryInterface(kScrollViewIID, (void**)&scrollingView);
viewManager->SetRootScrollableView(scrollingView);
}
PRBool isPaginated;
aPresContext->IsPaginated(&isPaginated);
if (isPaginated) {
nsIFrame* pageSequenceFrame;
// Create a page sequence frame
NS_NewSimplePageSequenceFrame(pageSequenceFrame);
// XXX should probably be a page sequence pseudo style context
pageSequenceFrame->Init(*aPresContext, nsnull, isScrollable ? scrollFrame :
viewportFrame, viewportPseudoStyle, nsnull);
if (isScrollable) {
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, pageSequenceFrame,
viewportPseudoStyle, PR_TRUE);
}
// Create the first page
nsIFrame* pageFrame;
NS_NewPageFrame(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.
// XXX Use a PAGE style context...
nsCOMPtr<nsIStyleContext> pagePseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(nsnull, nsLayoutAtoms::pagePseudo,
viewportPseudoStyle, PR_FALSE,
getter_AddRefs(pagePseudoStyle));
pageFrame->Init(*aPresContext, nsnull, pageSequenceFrame, pagePseudoStyle,
nsnull);
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, pageFrame,
pagePseudoStyle, PR_TRUE);
// The eventual parent of the document element frame
mDocElementContainingBlock = pageFrame;
// Set the initial child lists
pageSequenceFrame->SetInitialChildList(*aPresContext, nsnull, pageFrame);
if (isScrollable) {
scrollFrame->SetInitialChildList(*aPresContext, nsnull, pageSequenceFrame);
viewportFrame->SetInitialChildList(*aPresContext, nsnull, scrollFrame);
} else {
viewportFrame->SetInitialChildList(*aPresContext, nsnull, pageSequenceFrame);
}
} else {
// The viewport is the containing block for 'fixed' elements
mFixedContainingBlock = viewportFrame;
// Create the root frame. The document element's frame is a child of the
// root frame.
//
// Note: the major reason we need the root frame is to implement margins for
// the document element's frame. If we didn't need to support margins on the
// document element's frame, then we could eliminate the root frame and make
// the document element frame a child of the viewport (or its scroll frame)
nsIFrame* rootFrame;
NS_NewRootFrame(rootFrame);
// XXX this should be a root pseudo style context
rootFrame->Init(*aPresContext, nsnull, isScrollable ? scrollFrame :
viewportFrame, viewportPseudoStyle, nsnull);
if (isScrollable) {
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, rootFrame,
viewportPseudoStyle, PR_TRUE);
}
// The eventual parent of the document element frame
mDocElementContainingBlock = rootFrame;
// Set the initial child lists
if (isScrollable) {
scrollFrame->SetInitialChildList(*aPresContext, nsnull, rootFrame);
viewportFrame->SetInitialChildList(*aPresContext, nsnull, scrollFrame);
} else {
viewportFrame->SetInitialChildList(*aPresContext, nsnull, rootFrame);
}
}
aNewFrame = viewportFrame;
return NS_OK;
}
nsresult
nsCSSFrameConstructor::CreatePlaceholderFrameFor(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aParentFrame,
nsIFrame*& aPlaceholderFrame)
{
nsIFrame* placeholderFrame;
nsresult rv;
rv = NS_NewEmptyFrame(&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
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
presShell->SetPlaceholderFrameFor(aFrame, placeholderFrame);
aPlaceholderFrame = placeholderFrame;
}
return rv;
}
nsresult
nsCSSFrameConstructor::CreateFloaterPlaceholderFrameFor(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aFrame,
nsIStyleContext* aStyleContext,
nsIFrame* aParentFrame,
nsIFrame** aPlaceholderFrame)
{
nsPlaceholderFrame* placeholder;
nsresult rv = NS_NewPlaceholderFrame((nsIFrame**)&placeholder);
if (NS_SUCCEEDED(rv)) {
// The placeholder frame gets a pseudo style context
nsCOMPtr<nsIStyleContext> sc;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::placeholderPseudo,
aStyleContext,
PR_FALSE,
getter_AddRefs(sc));
placeholder->Init(*aPresContext, aContent, aParentFrame, sc, nsnull);
// Add mapping from absolutely positioned frame to its placeholder frame
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
presShell->SetPlaceholderFrameFor(aFrame, placeholder);
placeholder->SetAnchoredItem(aFrame);
*aPlaceholderFrame = NS_STATIC_CAST(nsIFrame*, placeholder);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructSelectFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewFrame,
PRBool & aProcessChildren,
PRBool aIsAbsolutelyPositioned,
PRBool & aFrameHasBeenInitialized,
PRBool aIsFixedPositioned,
nsAbsoluteItems& aFixedItems,
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
nsIDOMHTMLSelectElement* select = nsnull;
PRInt32 size = 1;
nsresult result = aContent->QueryInterface(kIDOMHTMLSelectElementIID, (void**)&select);
if (NS_OK == result) {
result = select->GetSize(&size);
if ((1 == size) || (kNoSizeSpecified == size)) {
// Construct a frame-based combo box
nsIFrame * comboboxFrame;
rv = NS_NewComboboxControlFrame(comboboxFrame);
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aFixedItems.containingBlock;
}
comboboxFrame->Init(*aPresContext, aContent, geometricParent, aStyleContext, nsnull);
nsIComboboxControlFrame* comboBox = nsnull;
if (NS_OK == comboboxFrame->QueryInterface(kIComboboxControlFrameIID, (void**)&comboBox)) {
nsIFrame * listFrame;
rv = NS_NewListControlFrame(listFrame);
// This is important to do before it is initialized
// it tells it that it is in "DropDown Mode"
nsIListControlFrame * listControlFrame;
if (NS_OK == listFrame->QueryInterface(kIListControlFrameIID, (void**)&listControlFrame)) {
listControlFrame->SetComboboxFrame(comboboxFrame);
}
//XXX: TODO: Make sure that a failure to resolve the following
//pseudo style will still work.
// Set up the Pseudo Style contents
// Dropdown list style
nsCOMPtr<nsIStyleContext> listStyle;
aPresContext->ResolvePseudoStyleContextFor
(aContent, nsHTMLAtoms::dropDownList, aStyleContext, PR_FALSE,
getter_AddRefs(listStyle));
// Dropdown list visible style
nsCOMPtr<nsIStyleContext> visiblePseudoStyle;
aPresContext->ResolvePseudoStyleContextFor
(aContent, nsHTMLAtoms::dropDownVisible, aStyleContext, PR_FALSE,
getter_AddRefs(visiblePseudoStyle));
// Dropdown list hidden style
nsCOMPtr<nsIStyleContext> hiddenPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor
(aContent, nsHTMLAtoms::dropDownHidden, aStyleContext, PR_FALSE,
getter_AddRefs(hiddenPseudoStyle));
// Initialize the scroll frame as absolutely positioned.
InitializeScrollFrame(listFrame, aPresContext, aContent, comboboxFrame, listStyle,
aAbsoluteItems, aNewFrame, aFixedItems, PR_TRUE,
PR_FALSE, 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(&listView);
NS_ASSERTION(nsnull != listView,"ListFrame's view is nsnull");
listView->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN);
// Set initial visibility to hidden for the drop-down list
// XXX: This should not be necessary. Need to restructure the combo box as follows:
// Derive nsComboboxFrame from nsAreaFrame. Attach the placeholder frame, a label frame and
// a button frame. Override reresolve style context and reresolve the style on the ListBox.
// The event state manager should then be asked to set active and non-active based on
// The mouse click this would get rid of all of the ugly code here. The setting of the active
// Should cause re-resolution of the AreaFrame which will re-sync it. KMM.
listFrame->ReResolveStyleContext(aPresContext, hiddenPseudoStyle, NS_STYLE_HINT_NONE, nsnull, nsnull);
listView->SetVisibility(nsViewVisibility_kHide);
// Create a place holder frame for the dropdown list
nsIFrame* placeholderFrame = nsnull;
CreatePlaceholderFrameFor(aPresContext, aContent, aNewFrame, aStyleContext,
aParentFrame, placeholderFrame);
aFrameItems.AddChild(placeholderFrame);
// Add the absolutely positioned frame to its containing block's list
// of child frames
aAbsoluteItems.AddChild(listFrame);
listFrame = aNewFrame;
// This needs to be done "after" the ListFrame has it's ChildList set
// because the SetInitChildList intializes the ListBox selection state
// and this method initializes the ComboBox's selection state
comboBox->SetDropDown(placeholderFrame, listFrame);
// Set up the Pseudo Style contents for combo box button pressed and
// out.
//XXX: TODO: Make this work even if resolving the pseudo style fails.
nsCOMPtr<nsIStyleContext> outPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor
(aContent, nsHTMLAtoms::dropDownBtnOut, aStyleContext, PR_FALSE,
getter_AddRefs(outPseudoStyle));
nsCOMPtr<nsIStyleContext> pressPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent, nsHTMLAtoms::dropDownBtnPressed,
aStyleContext, PR_FALSE, getter_AddRefs(pressPseudoStyle));
comboBox->SetDropDownStyleContexts(visiblePseudoStyle, hiddenPseudoStyle);
comboBox->SetButtonStyleContexts(outPseudoStyle, pressPseudoStyle);
nsIFrame* frame = nsnull;
if (NS_OK == comboboxFrame->QueryInterface(kIFrameIID, (void**)&frame)) {
nsFrameItems childItems;
frame->SetInitialChildList(*aPresContext, nsnull,
childItems.childList);
}
aProcessChildren = PR_FALSE;
//XXX: TODO: Need to set an option on the view that was created for the dropdown list
//to be a borderless top-level window.
aNewFrame = comboboxFrame;
aFrameHasBeenInitialized = PR_TRUE;
}
} else {
// Construct a frame-based list box
nsIFrame * listFrame;
rv = NS_NewListControlFrame(listFrame);
aNewFrame = listFrame;
InitializeScrollFrame(listFrame, aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, aNewFrame, aFixedItems, aIsAbsolutelyPositioned, PR_FALSE, 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(&listView);
NS_ASSERTION(nsnull != listView,"ListFrame's view is nsnull");
listView->SetViewFlags(NS_VIEW_PUBLIC_FLAG_DONT_CHECK_CHILDREN);
aFrameHasBeenInitialized = PR_TRUE;
}
NS_RELEASE(select);
} else {
rv = NS_NewSelectControlFrame(aNewFrame);
}
}
else {
// Not frame based. Use a SelectFrame which creates a native widget.
rv = NS_NewSelectControlFrame(aNewFrame);
}
return rv;
}
nsresult
nsCSSFrameConstructor::ConstructFrameByTag(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsFrameItems& aFrameItems,
nsAbsoluteItems& aFixedItems,
nsAbsoluteItems& aFloatingItems)
{
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 newFrameIsFloaterContainer = PR_FALSE;
PRBool isReplaced = PR_FALSE;
nsresult rv = NS_OK;
if (nsLayoutAtoms::textTagName == aTag) {
rv = NS_NewTextFrame(newFrame);
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(newFrame);
}
else if (nsHTMLAtoms::hr == aTag) {
rv = NS_NewHRFrame(newFrame);
}
else if (nsHTMLAtoms::br == aTag) {
rv = NS_NewBRFrame(newFrame);
isReplaced = PR_TRUE;
}
else if (nsHTMLAtoms::wbr == aTag) {
rv = NS_NewWBRFrame(newFrame);
}
else if (nsHTMLAtoms::input == aTag) {
isReplaced = PR_TRUE;
rv = CreateInputFrame(aContent, newFrame);
}
else if (nsHTMLAtoms::textarea == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewTextControlFrame(newFrame);
}
else if (nsHTMLAtoms::select == aTag) {
isReplaced = PR_TRUE;
rv = ConstructSelectFrame(aPresContext, aContent, aParentFrame,
aTag, aStyleContext, aAbsoluteItems,
newFrame, processChildren,
isAbsolutelyPositioned,
frameHasBeenInitialized,
isFixedPositioned, aFixedItems, aFrameItems);
}
else if (nsHTMLAtoms::applet == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(newFrame);
}
else if (nsHTMLAtoms::embed == aTag) {
rv = NS_NewObjectFrame(newFrame);
}
else if (nsHTMLAtoms::fieldset == aTag) {
rv = NS_NewFieldSetFrame(newFrame);
processChildren = PR_TRUE;
}
else if (nsHTMLAtoms::legend == aTag) {
rv = NS_NewLegendFrame(newFrame);
processChildren = PR_TRUE;
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::object == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewObjectFrame(newFrame);
}
else if (nsHTMLAtoms::form == aTag) {
rv = NS_NewFormFrame(newFrame);
}
else if (nsHTMLAtoms::frameset == aTag) {
rv = NS_NewHTMLFramesetFrame(newFrame);
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::iframe == aTag) {
isReplaced = PR_TRUE;
rv = NS_NewHTMLFrameOuterFrame(newFrame);
}
else if (nsHTMLAtoms::spacer == aTag) {
rv = NS_NewSpacerFrame(newFrame);
canBePositioned = PR_FALSE;
}
else if (nsHTMLAtoms::button == aTag) {
rv = NS_NewHTMLButtonControlFrame(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(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;
if (canBePositioned) {
if (isAbsolutelyPositioned) {
geometricParent = aAbsoluteItems.containingBlock;
} else if (isFixedPositioned) {
geometricParent = aFixedItems.containingBlock;
}
}
newFrame->Init(*aPresContext, aContent, geometricParent, aStyleContext,
nsnull);
// 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;
nsAbsoluteItems floaterList(newFrame);
if (processChildren) {
if (newFrameIsFloaterContainer) {
rv = ProcessChildren(aPresContext, aContent, newFrame,
aAbsoluteItems, childItems, aFixedItems,
floaterList, PR_TRUE);
}
else {
rv = ProcessChildren(aPresContext, aContent, newFrame,
aAbsoluteItems, childItems, aFixedItems,
aFloatingItems, PR_TRUE);
}
}
// Set the frame's initial child list
newFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
// Set the frame's floating child list, too
if (floaterList.childList) {
newFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
}
// If the frame is positioned, then create a placeholder frame
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresContext, aContent, newFrame,
aStyleContext, aParentFrame, placeholderFrame);
// Add the positioned frame to its containing block's list of
// child frames
if (isAbsolutelyPositioned) {
aAbsoluteItems.AddChild(newFrame);
} else {
aFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else if (isFloating) {
nsIFrame* placeholderFrame;
CreateFloaterPlaceholderFrameFor(aPresContext, aContent, newFrame,
aStyleContext, aParentFrame,
&placeholderFrame);
// Add the floating frame to its containing block's list of child frames
aFloatingItems.AddChild(newFrame);
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else {
// Add the newly constructed frame to the flow
aFrameItems.AddChild(newFrame);
}
}
return rv;
}
#ifdef INCLUDE_XUL
nsresult
nsCSSFrameConstructor::ConstructXULFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIAtom* aTag,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsFrameItems& aFrameItems,
nsAbsoluteItems& aFixedItems,
nsAbsoluteItems& aFloatingItems,
PRBool& haltProcessing)
{
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;
// Initialize the new frame
nsIFrame* newFrame = nsnull;
nsIFrame* ignore = nsnull; // I have no idea what this is used for.
nsTreeCreator treeCreator; // 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
if (aTag == nsXULAtoms::button)
rv = NS_NewButtonControlFrame(newFrame);
else if (aTag == nsXULAtoms::checkbox)
rv = NS_NewCheckboxControlFrame(newFrame);
else if (aTag == nsXULAtoms::tristatecheckbox)
rv = NS_NewTriStateCheckboxFrame(newFrame);
else if (aTag == nsXULAtoms::slider)
rv = NS_NewSliderFrame(newFrame);
else if (aTag == nsXULAtoms::spinner)
rv = NS_NewSpinnerFrame(newFrame);
else if (aTag == nsXULAtoms::scrollbar)
rv = NS_NewScrollbarFrame(newFrame);
else if (aTag == nsXULAtoms::colorpicker)
rv = NS_NewColorPickerFrame(newFrame);
else if (aTag == nsXULAtoms::fontpicker)
rv = NS_NewFontPickerFrame(newFrame);
else if (aTag == nsXULAtoms::radio)
rv = NS_NewRadioControlFrame(newFrame);
else if (aTag == nsXULAtoms::text)
rv = NS_NewTextControlFrame(newFrame);
else if (aTag == nsXULAtoms::widget)
rv = NS_NewObjectFrame(newFrame);
// TREE CONSTRUCTION
// The following code is used to construct a tree view from the XUL content
// model. It has to take the hierarchical tree content structure and build a flattened
// table row frame structure.
else if (aTag == nsXULAtoms::tree)
{
nsIFrame* geometricParent = aParentFrame;
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
aParentFrame = aAbsoluteItems.containingBlock;
}
if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
aParentFrame = aFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresContext, aContent, geometricParent, aStyleContext,
aAbsoluteItems, newFrame, aFixedItems, 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(aPresContext, aContent, newFrame, aStyleContext,
aParentFrame, placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aAbsoluteItems.AddChild(newFrame);
} else {
aFixedItems.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 == nsXULAtoms::treechildren)
{
haltProcessing = PR_TRUE;
return rv; // This is actually handled by the treeitem node.
}
else if (aTag == nsXULAtoms::treeitem)
{
// 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(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, newFrame, ignore, aFixedItems, treeCreator);
aFrameItems.AddChild(newFrame);
// We need to find the treechildren node that is a child of this node
// and we need to construct new rows.
PRInt32 aChildCount;
aContent->ChildCount(aChildCount);
for (PRInt32 i = 0; i < aChildCount; i++)
{
nsCOMPtr<nsIContent> childContent;
if (NS_SUCCEEDED(aContent->ChildAt(i, *getter_AddRefs(childContent))))
{
// Construct a child frame
nsCOMPtr<nsIAtom> pTag;
childContent->GetTag(*getter_AddRefs(pTag));
if (pTag.get() == nsXULAtoms::treechildren)
{
// Always build rows. Rely on style rules to hide frames.
// Rely on RDF trickery to hide synthetic content from the content model.
nsAbsoluteItems floaterList(nsnull);
rv = ProcessChildren(aPresContext, childContent, aParentFrame,
aAbsoluteItems, aFrameItems, aFixedItems,
floaterList);
NS_ASSERTION(nsnull == floaterList.childList, "floater in odd spot");
}
}
}
return rv;
// Note: See later in this method. More processing has to be done after the
// tree item has constructed its children and after this frame has been added
// to our list.
}
else if (aTag == nsXULAtoms::treecell)
{
// We make a tree cell frame and process the children.
// Find out what the attribute value for event allowance is.
nsString attrValue;
nsresult result = aContent->GetAttribute(nsXULAtoms::nameSpaceID, nsXULAtoms::treeallowevents, attrValue);
attrValue.ToLowerCase();
PRBool allowEvents = (result == NS_CONTENT_ATTR_NO_VALUE ||
(result == NS_CONTENT_ATTR_HAS_VALUE && attrValue=="true"));
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, newFrame, ignore, ignore2, aFixedItems,
treeCreator);
aFrameItems.AddChild(newFrame);
((nsTreeCellFrame*)newFrame)->SetAllowEvents(allowEvents);
return rv;
}
else if (aTag == nsXULAtoms::treeindentation)
{
rv = NS_NewTreeIndentationFrame(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(newFrame);
}
else if (aTag == nsXULAtoms::toolbar) {
processChildren = PR_TRUE;
rv = NS_NewToolbarFrame(newFrame);
}
// End of TOOLBAR CONSTRUCTION logic
// PROGRESS METER CONSTRUCTION
else if (aTag == nsXULAtoms::progressmeter) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewProgressMeterFrame(newFrame);
}
// End of PROGRESS METER CONSTRUCTION logic
// BOX CONSTRUCTION
else if (aTag == nsXULAtoms::box || aTag == nsXULAtoms::tabbox || aTag == nsXULAtoms::tabpage || aTag == nsXULAtoms::tabcontrol) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewBoxFrame(newFrame);
}
// End of BOX CONSTRUCTION logic
// TITLED BUTTON CONSTRUCTION
else if (aTag == nsXULAtoms::titledbutton) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTitledButtonFrame(newFrame);
}
// End of TITLED BUTTON CONSTRUCTION logic
// DECK CONSTRUCTION
else if (aTag == nsXULAtoms::deck || aTag == nsXULAtoms::tabpanel) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewDeckFrame(newFrame);
}
// End of DECK CONSTRUCTION logic
// TAB CONSTRUCTION
else if (aTag == nsXULAtoms::tab) {
processChildren = PR_TRUE;
isReplaced = PR_TRUE;
rv = NS_NewTabFrame(newFrame);
}
// End of TAB 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 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
? aAbsoluteItems.containingBlock
: aParentFrame;
newFrame->Init(*aPresContext, aContent, geometricParent, aStyleContext,
nsnull);
// 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(aPresContext, aContent, newFrame, aAbsoluteItems,
childItems, aFixedItems, aFloatingItems);
}
// 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(aPresContext, aContent, newFrame, aStyleContext,
aParentFrame, placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aAbsoluteItems.AddChild(newFrame);
} else {
aFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
}
}
return rv;
}
#endif
nsresult
nsCSSFrameConstructor::InitializeScrollFrame(nsIFrame* scrollFrame,
nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsIFrame*& aNewFrame,
nsAbsoluteItems& aFixedItems,
PRBool aIsAbsolutelyPositioned,
PRBool aIsFixedPositioned,
PRBool aCreateBlock)
{
// Initialize it
nsIFrame* geometricParent = aParentFrame;
if (aIsAbsolutelyPositioned) {
geometricParent = aAbsoluteItems.containingBlock;
} else if (aIsFixedPositioned) {
geometricParent = aFixedItems.containingBlock;
}
scrollFrame->Init(*aPresContext, aContent, geometricParent, aStyleContext,
nsnull);
// The scroll frame gets the original style context, and the scrolled
// frame gets a SCROLLED-CONTENT pseudo element style context that
// inherits the background properties
nsCOMPtr<nsIStyleContext> scrolledPseudoStyle;
aPresContext->ResolvePseudoStyleContextFor(aContent,
nsHTMLAtoms::scrolledContentPseudo,
aStyleContext, PR_FALSE,
getter_AddRefs(scrolledPseudoStyle));
// Create an area container for the frame
nsIFrame* scrolledFrame;
NS_NewAreaFrame(scrolledFrame, NS_BLOCK_SHRINK_WRAP);
// Initialize the frame and force it to have a view
scrolledFrame->Init(*aPresContext, aContent, scrollFrame,
scrolledPseudoStyle, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, scrolledFrame,
scrolledPseudoStyle, PR_TRUE);
// Process children
nsAbsoluteItems floaterList(scrolledFrame);
if (aIsAbsolutelyPositioned || aIsFixedPositioned) {
// The area frame becomes a container for child frames that are
// absolutely positioned
nsAbsoluteItems absoluteItems(scrolledFrame);
nsFrameItems childItems;
ProcessChildren(aPresContext, aContent, scrolledFrame, absoluteItems,
childItems, aFixedItems, floaterList);
// Set the initial child lists
scrolledFrame->SetInitialChildList(*aPresContext, nsnull,
childItems.childList);
if (nsnull != absoluteItems.childList) {
scrolledFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::absoluteList,
absoluteItems.childList);
}
if (floaterList.childList) {
scrolledFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
} else {
nsFrameItems childItems;
ProcessChildren(aPresContext, aContent, scrolledFrame, aAbsoluteItems,
childItems, aFixedItems, floaterList);
// Set the initial child lists
scrolledFrame->SetInitialChildList(*aPresContext, nsnull,
childItems.childList);
if (floaterList.childList) {
scrolledFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
}
scrollFrame->SetInitialChildList(*aPresContext, nsnull, scrolledFrame);
aNewFrame = scrollFrame;
return NS_OK;
}
nsresult
nsCSSFrameConstructor::ConstructFrameByDisplayType(nsIPresContext* aPresContext,
const nsStyleDisplay* aDisplay,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsIStyleContext* aStyleContext,
nsAbsoluteItems& aAbsoluteItems,
nsFrameItems& aFrameItems,
nsAbsoluteItems& aFixedItems,
nsAbsoluteItems& aFloatingItems)
{
PRBool isAbsolutelyPositioned = PR_FALSE;
PRBool isFixedPositioned = PR_FALSE;
PRBool isFloating = PR_FALSE;
PRBool isBlock = aDisplay->IsBlockLevel();
nsIFrame* newFrame = nsnull; // the frame we construct
nsTableCreator tableCreator; // Used to make table frames.
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;
}
// Create a scroll frame
nsIFrame* scrollFrame;
NS_NewScrollFrame(scrollFrame);
// Initialize it
InitializeScrollFrame(scrollFrame, aPresContext, aContent, aParentFrame,
aStyleContext, aAbsoluteItems, newFrame,
aFixedItems, isAbsolutelyPositioned,
isFixedPositioned, PR_FALSE);
}
// 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 an area frame
NS_NewAreaFrame(newFrame, NS_BLOCK_MARGIN_ROOT);
newFrame->Init(*aPresContext, aContent,
(isAbsolutelyPositioned
? aAbsoluteItems.containingBlock
: aFixedItems.containingBlock),
aStyleContext, nsnull);
// 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
nsAbsoluteItems absoluteItems(newFrame);
nsFrameItems childItems;
nsAbsoluteItems floaterList(newFrame);
ProcessChildren(aPresContext, aContent, newFrame, absoluteItems,
childItems, aFixedItems, floaterList, PR_TRUE);
// Set the frame's initial child list(s)
newFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
if (nsnull != absoluteItems.childList) {
newFrame->SetInitialChildList(*aPresContext, nsLayoutAtoms::absoluteList,
absoluteItems.childList);
}
if (floaterList.childList) {
newFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.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_NewAreaFrame(newFrame, NS_BLOCK_SHRINK_WRAP);
// Initialize the frame
newFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext, nsnull);
// See if we need to create a view
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, newFrame,
aStyleContext, PR_FALSE);
// Process the child content
nsFrameItems childItems;
nsAbsoluteItems floaterList(newFrame);
ProcessChildren(aPresContext, aContent, newFrame, aAbsoluteItems,
childItems, aFixedItems, floaterList, PR_TRUE);
// Set the frame's initial child list(s)
newFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
if (floaterList.childList) {
newFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
}
// See if it's relatively positioned
else if (NS_STYLE_POSITION_RELATIVE == position->mPosition) {
// Is it block-level or inline-level?
if (NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) {
// Create an area frame. No space manager, though
NS_NewAreaFrame(newFrame, NS_AREA_NO_SPACE_MGR);
} else {
// Create a positioned inline frame
NS_NewPositionedInlineFrame(newFrame);
}
// Initialize the frame
newFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext, nsnull);
// 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
nsAbsoluteItems absoluteItems(newFrame);
nsAbsoluteItems floaterList(newFrame);
nsFrameItems childItems;
if (NS_STYLE_DISPLAY_BLOCK == aDisplay->mDisplay) {
ProcessChildren(aPresContext, aContent, newFrame, absoluteItems,
childItems, aFixedItems, floaterList, PR_TRUE);
} else {
ProcessChildren(aPresContext, aContent, newFrame, absoluteItems,
childItems, aFixedItems, aFloatingItems, PR_TRUE);
}
// Set the frame's initial child list
newFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
if (nsnull != absoluteItems.childList) {
newFrame->SetInitialChildList(*aPresContext, nsLayoutAtoms::absoluteList,
absoluteItems.childList);
}
if (floaterList.childList) {
newFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
}
// otherwise let the display property influence the frame type to create
else {
PRBool processChildren = PR_FALSE; // whether we should process child content
PRBool newFrameIsFloaterContainer = PR_FALSE;
nsIFrame* ignore;
// Use the 'display' property to choose a frame type
switch (aDisplay->mDisplay) {
case NS_STYLE_DISPLAY_BLOCK:
case NS_STYLE_DISPLAY_LIST_ITEM:
case NS_STYLE_DISPLAY_RUN_IN:
case NS_STYLE_DISPLAY_COMPACT:
rv = NS_NewBlockFrame(newFrame, 0);
processChildren = PR_TRUE;
newFrameIsFloaterContainer = PR_TRUE;
break;
case NS_STYLE_DISPLAY_INLINE:
rv = NS_NewInlineFrame(newFrame);
processChildren = PR_TRUE;
break;
case NS_STYLE_DISPLAY_TABLE:
{
nsIFrame* geometricParent = aParentFrame;
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
isAbsolutelyPositioned = PR_TRUE;
aParentFrame = aAbsoluteItems.containingBlock;
}
if (NS_STYLE_POSITION_FIXED == position->mPosition) {
isFixedPositioned = PR_TRUE;
aParentFrame = aFixedItems.containingBlock;
}
rv = ConstructTableFrame(aPresContext, aContent, geometricParent, aStyleContext,
aAbsoluteItems, newFrame, aFixedItems, 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(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, newFrame, ignore, aFixedItems, 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(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, isRowGroup, newFrame, ignore, aFixedItems, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
case NS_STYLE_DISPLAY_TABLE_COLUMN:
rv = ConstructTableColFrame(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, newFrame, ignore, aFixedItems, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
case NS_STYLE_DISPLAY_TABLE_ROW:
rv = ConstructTableRowFrame(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, newFrame, ignore, aFixedItems, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
case NS_STYLE_DISPLAY_TABLE_CELL:
{
nsIFrame* ignore2;
rv = ConstructTableCellFrame(aPresContext, aContent, aParentFrame, aStyleContext,
aAbsoluteItems, newFrame, ignore, ignore2,
aFixedItems, tableCreator);
aFrameItems.AddChild(newFrame);
return rv;
}
default:
// Don't create any frame for content that's not displayed...
break;
}
// If we succeeded in creating a frame then initialize the frame and
// process children if requested
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
newFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext, nsnull);
// 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) {
if (newFrameIsFloaterContainer) {
nsAbsoluteItems floaterList(newFrame);
rv = ProcessChildren(aPresContext, aContent, newFrame,
aAbsoluteItems, childItems, aFixedItems,
aFloatingItems, PR_TRUE);
// Set the frame's initial child list
newFrame->SetInitialChildList(*aPresContext, nsnull,
childItems.childList);
if (floaterList.childList) {
newFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
}
else {
rv = ProcessChildren(aPresContext, aContent, newFrame,
aAbsoluteItems, childItems, aFixedItems,
aFloatingItems, PR_TRUE);
// Set the frame's initial child list
newFrame->SetInitialChildList(*aPresContext, nsnull,
childItems.childList);
}
}
}
}
// If the frame is absolutely positioned, then create a placeholder frame
nearly_done:
if (isAbsolutelyPositioned || isFixedPositioned) {
nsIFrame* placeholderFrame;
CreatePlaceholderFrameFor(aPresContext, aContent, newFrame, aStyleContext,
aParentFrame, placeholderFrame);
// Add the positioned frame to its containing block's list of child frames
if (isAbsolutelyPositioned) {
aAbsoluteItems.AddChild(newFrame);
} else {
aFixedItems.AddChild(newFrame);
}
// Add the placeholder frame to the flow
aFrameItems.AddChild(placeholderFrame);
} else if (isFloating) {
nsIFrame* placeholderFrame;
CreateFloaterPlaceholderFrameFor(aPresContext, aContent, newFrame,
aStyleContext, aParentFrame,
&placeholderFrame);
// Add the floating frame to its containing block's list of child frames
aFloatingItems.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);
}
return rv;
}
nsresult
nsCSSFrameConstructor::GetAdjustedParentFrame(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(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
if ((NS_STYLE_OVERFLOW_SCROLL == aDisplay->mOverflow) ||
(NS_STYLE_OVERFLOW_AUTO == aDisplay->mOverflow)) {
return PR_TRUE;
}
return PR_FALSE;
}
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;
}
nsresult
nsCSSFrameConstructor::ConstructFrame(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParentFrame,
nsAbsoluteItems& aAbsoluteItems,
nsFrameItems& aFrameItems,
nsAbsoluteItems& aFixedItems,
nsAbsoluteItems& aFloatingItems)
{
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));
#ifdef chris_needs_to_remove_this
// Resolve the style context based on the content object and the parent
// style context
nsCOMPtr<nsIStyleContext> styleContext;
nsCOMPtr<nsIStyleContext> parentStyleContext;
aParentFrame->GetStyleContext(getter_AddRefs(parentStyleContext));
if (nsLayoutAtoms::textTagName == tag) {
// 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,
getter_AddRefs(styleContext));
} else if (nsLayoutAtoms::commentTagName == tag) {
// 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,
getter_AddRefs(styleContext));
} else if (nsLayoutAtoms::processingInstructionTagName == tag) {
// 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,
getter_AddRefs(styleContext));
} else {
rv = aPresContext->ResolveStyleContextFor(aContent, parentStyleContext,
PR_FALSE,
getter_AddRefs(styleContext));
}
#endif
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) {
nsIFrame* lastChild = aFrameItems.lastChild;
// Handle specific frame types
rv = ConstructFrameByTag(aPresContext, aContent, aParentFrame, tag,
styleContext, aAbsoluteItems, aFrameItems,
aFixedItems, aFloatingItems);
#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(aPresContext, aContent, aParentFrame, tag,
styleContext, aAbsoluteItems, aFrameItems,
aFixedItems, aFloatingItems, haltProcessing);
if (haltProcessing) {
return rv;
}
}
#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(aPresContext, display, aContent,
aParentFrame, styleContext,
aAbsoluteItems, aFrameItems,
aFixedItems, aFloatingItems);
}
}
}
return rv;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ReconstructDocElementHierarchy(nsIPresContext* aPresContext)
{
nsresult rv = NS_OK;
if (nsnull != mDocument) {
nsCOMPtr<nsIContent> rootContent(dont_AddRef(mDocument->GetRootContent()));
if (rootContent) {
nsCOMPtr<nsIPresShell> shell;
rv = aPresContext->GetShell(getter_AddRefs(shell));
if (NS_SUCCEEDED(rv)) {
nsIFrame* docElementFrame;
// Get the frame that corresponds to the document element
shell->GetPrimaryFrameFor(rootContent, &docElementFrame);
if (nsnull != docElementFrame) {
nsIFrame* docParentFrame;
docElementFrame->GetParent(&docParentFrame);
if (nsnull != docParentFrame) {
// Remove the old document element hieararchy
rv = docParentFrame->RemoveFrame(*aPresContext,
*shell,
nsnull,
docElementFrame);
// XXX Remove any existing fixed items...
if (NS_SUCCEEDED(rv)) {
nsIFrame* newChild;
nsCOMPtr<nsIStyleContext> rootPseudoStyle;
nsAbsoluteItems fixedItems(mFixedContainingBlock);
docParentFrame->GetStyleContext(getter_AddRefs(rootPseudoStyle));
rv = ConstructDocElementFrame(aPresContext, rootContent,
docParentFrame, rootPseudoStyle,
newChild, fixedItems);
if (NS_SUCCEEDED(rv)) {
rv = docParentFrame->InsertFrames(*aPresContext, *shell, nsnull,
nsnull, newChild);
// Tell the fixed containing block about its 'fixed' frames
if (nsnull != fixedItems.childList) {
mFixedContainingBlock->InsertFrames(*aPresContext, *shell,
nsLayoutAtoms::fixedList, nsnull, fixedItems.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) {
// 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 (display->IsBlockLevel() && IsScrollable(aPresContext, display)) {
frame->FirstChild(nsnull, &frame);
} else if (NS_STYLE_DISPLAY_TABLE == display->mDisplay) { // we got an outer table frame, need an inner
frame->FirstChild(nsnull, &frame); // the inner frame is always the 1st child
}
}
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(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
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;
}
// 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)
{
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);
result = (content == aContent);
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,
nsIContent* aContainer,
nsIFrame* aParentFrame,
nsIFrame* aFrameList)
{
nsIFrame* firstChild;
aParentFrame->FirstChild(nsnull, &firstChild);
nsFrameList frames(firstChild);
nsIFrame* lastChild = frames.LastChild();
// See if the parent has an :after pseudo-element
if (lastChild && IsGeneratedContentFor(aContainer, lastChild)) {
// Insert the frames before the :after pseudo-element
return aParentFrame->InsertFrames(*aPresContext, *aPresShell,
nsnull, frames.GetPrevSiblingFor(lastChild),
aFrameList);
}
// Append the frames to the end of the parent's child list
return aParentFrame->AppendFrames(*aPresContext, *aPresShell,
nsnull, aFrameList);
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentAppended(nsIPresContext* aPresContext,
nsIContent* aContainer,
PRInt32 aNewIndexInContainer)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* parentFrame = GetFrameFor(shell, aPresContext, aContainer);
#ifdef NS_DEBUG
if (nsnull == parentFrame) {
NS_WARNING("Ignoring content-appended notification with no matching frame...");
}
#endif
if (nsnull != parentFrame) {
// Get the parent frame's last-in-flow
nsIFrame* nextInFlow = parentFrame;
while (nsnull != nextInFlow) {
parentFrame->GetNextInFlow(&nextInFlow);
if (nsnull != nextInFlow) {
parentFrame = nextInFlow;
}
}
// Get the containing block for absolutely positioned elements
nsIFrame* absoluteContainingBlock =
GetAbsoluteContainingBlock(aPresContext, parentFrame);
nsIFrame* floaterContainingBlock =
GetFloaterContainingBlock(aPresContext, parentFrame);
// Create some new frames
PRInt32 count;
nsIFrame* firstAppendedFrame = nsnull;
nsAbsoluteItems absoluteItems(absoluteContainingBlock);
nsAbsoluteItems fixedItems(mFixedContainingBlock);
nsAbsoluteItems floaterList(floaterContainingBlock);
nsFrameItems frameItems;
aContainer->ChildCount(count);
for (PRInt32 i = aNewIndexInContainer; i < count; i++) {
nsCOMPtr<nsIContent> child;
aContainer->ChildAt(i, *getter_AddRefs(child));
ConstructFrame(aPresContext, child, parentFrame, absoluteItems,
frameItems, fixedItems, floaterList);
}
// 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(parentFrame,
firstAppendedFrameDisplay->mDisplay,
adjustedParentFrame);
}
// Notify the parent frame passing it the list of new frames
if (NS_SUCCEEDED(result)) {
// Append the flowed frames to the principal child list
AppendFrames(aPresContext, shell, 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 (nsnull != absoluteItems.childList) {
absoluteItems.containingBlock->AppendFrames(*aPresContext, *shell,
nsLayoutAtoms::absoluteList,
absoluteItems.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 (nsnull != fixedItems.childList) {
fixedItems.containingBlock->AppendFrames(*aPresContext, *shell,
nsLayoutAtoms::fixedList,
fixedItems.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 (floaterList.childList) {
floaterList.containingBlock->AppendFrames(*aPresContext, *shell,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
}
}
return NS_OK;
}
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 index = aIndexInContainer - 1; index >= 0; index--) {
nsCOMPtr<nsIContent> precedingContent;
aContainer->ChildAt(index, *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 index = aIndexInContainer + 1; index < count; index++) {
nsCOMPtr<nsIContent> nextContent;
aContainer->ChildAt(index, *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::ContentInserted(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
{
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;
nsAbsoluteItems fixedItems(mFixedContainingBlock);
ConstructDocElementFrame(aPresContext,
docElement,
mDocElementContainingBlock,
containerStyle,
docElementFrame,
fixedItems);
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 (nsnull != fixedItems.childList) {
mFixedContainingBlock->SetInitialChildList(*aPresContext,
nsLayoutAtoms::fixedList,
fixedItems.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.
nsIFrame* parentFrame;
if ((nsnull == prevSibling) && (nsnull == nextSibling)) {
#ifdef INCLUDE_XUL
// Need to (for XUL only) do a special check for the treechildren tag
PRInt32 nameSpaceID;
if (NS_SUCCEEDED(aContainer->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
// See if we're the treechildren tag. This tag is treated differently,
// since it has no corresponding frame, but may have children that have
// frames (the whole hierarchical content model vs. flat table frame model
// problem).
nsIAtom* tag;
aContainer->GetTag(tag);
nsString tagName;
tag->ToString(tagName);
if (tagName == "treechildren")
{
// Retrieve the parent treeitem, and then obtain its frame. This is
// the prevSibling frame that we should use.
nsCOMPtr<nsIContent> parentItem;
aContainer->GetParent(*getter_AddRefs(parentItem));
shell->GetPrimaryFrameFor(parentItem, &prevSibling);
prevSibling->GetParent(&parentFrame);
// XXX: Optimize for the lazy frame instantiation case. Need to bail
// if our frame isn't visible
}
else
{
// No previous or next sibling so treat this like an appended frame.
isAppend = PR_TRUE;
shell->GetPrimaryFrameFor(aContainer, &parentFrame);
}
}
else {
#endif // INCLUDE_XUL
// No previous or next sibling so treat this like an appended frame.
isAppend = PR_TRUE;
shell->GetPrimaryFrameFor(aContainer, &parentFrame);
#ifdef INCLUDE_XUL
}
#endif
} else {
// Use the prev sibling if we have it; otherwise use the next sibling
if (nsnull != prevSibling) {
prevSibling->GetParent(&parentFrame);
} else {
nextSibling->GetParent(&parentFrame);
}
}
// Construct a new frame
if (nsnull != parentFrame) {
// Get the containing block for absolutely positioned elements
nsIFrame* absoluteContainingBlock =
GetAbsoluteContainingBlock(aPresContext, parentFrame);
// Get the containing block for floating elements
nsIFrame* floaterContainingBlock =
GetFloaterContainingBlock(aPresContext, parentFrame);
nsAbsoluteItems absoluteItems(absoluteContainingBlock);
nsAbsoluteItems floaterList(floaterContainingBlock);
nsFrameItems frameItems;
nsAbsoluteItems fixedItems(mFixedContainingBlock);
rv = ConstructFrame(aPresContext, aChild, parentFrame, absoluteItems,
frameItems, fixedItems, floaterList);
nsIFrame* newFrame = frameItems.childList;
if (NS_SUCCEEDED(rv) && (nsnull != newFrame)) {
// Notify the parent frame
if (isAppend) {
rv = AppendFrames(aPresContext, shell, 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(nsnull, &firstChild);
if (IsGeneratedContentFor(aContainer, firstChild)) {
// Insert the new frames after the :before pseudo-element
prevSibling = firstChild;
}
}
rv = parentFrame->InsertFrames(*aPresContext, *shell, nsnull,
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 (nsnull != absoluteItems.childList) {
rv = absoluteItems.containingBlock->AppendFrames(*aPresContext, *shell,
nsLayoutAtoms::absoluteList,
absoluteItems.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 (nsnull != fixedItems.childList) {
rv = fixedItems.containingBlock->AppendFrames(*aPresContext, *shell,
nsLayoutAtoms::fixedList,
fixedItems.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 (floaterList.childList) {
rv = floaterList.containingBlock->AppendFrames(*aPresContext, *shell,
nsLayoutAtoms::floaterList,
floaterList.childList);
}
}
}
}
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);
}
return res;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ContentRemoved(nsIPresContext* aPresContext,
nsIContent* aContainer,
nsIContent* aChild,
PRInt32 aIndexInContainer)
{
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsresult rv = NS_OK;
// Find the child frame
nsIFrame* childFrame;
shell->GetPrimaryFrameFor(aChild, &childFrame);
if (nsnull != childFrame) {
// See if the child frame is a floating frame
const nsStyleDisplay* display;
childFrame->GetStyleData(eStyleStruct_Display,
(const nsStyleStruct*&)display);
if (display->IsFloating()) {
// Get the placeholder frame
nsIFrame* placeholderFrame;
shell->GetPlaceholderFrameFor(childFrame, &placeholderFrame);
// Remove the mapping from the frame to its placeholder
shell->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
nsIFrame* parentFrame;
childFrame->GetParent(&parentFrame);
rv = parentFrame->RemoveFrame(*aPresContext, *shell,
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);
rv = parentFrame->RemoveFrame(*aPresContext, *shell, nsnull,
placeholderFrame);
}
}
else {
// See if it's absolutely positioned
const nsStylePosition* position;
childFrame->GetStyleData(eStyleStruct_Position, (const nsStyleStruct*&)position);
if (position->IsAbsolutelyPositioned()) {
// Get the placeholder frame
nsIFrame* placeholderFrame;
shell->GetPlaceholderFrameFor(childFrame, &placeholderFrame);
// Remove the mapping from the frame to its placeholder
shell->SetPlaceholderFrameFor(childFrame, nsnull);
// Generate two notifications. First for the absolutely positioned
// frame
nsIFrame* parentFrame;
childFrame->GetParent(&parentFrame);
rv = parentFrame->RemoveFrame(*aPresContext, *shell,
nsLayoutAtoms::absoluteList, childFrame);
// Now the placeholder frame
if (nsnull != placeholderFrame) {
placeholderFrame->GetParent(&parentFrame);
rv = parentFrame->RemoveFrame(*aPresContext, *shell, nsnull,
placeholderFrame);
}
} else {
// Notify the parent frame that it should delete the frame
nsIFrame* parentFrame;
childFrame->GetParent(&parentFrame);
rv = parentFrame->RemoveFrame(*aPresContext, *shell, nsnull, childFrame);
#ifdef INCLUDE_XUL
// Need to (for XUL only) do a special check for the treeitem tag
PRInt32 nameSpaceID;
if (aContainer &&
NS_SUCCEEDED(aContainer->GetNameSpaceID(nameSpaceID)) &&
nameSpaceID == nsXULAtoms::nameSpaceID) {
// See if we're the treeitem tag. This tag is treated differently,
// since the children of the content node are actually SIBLING frames.
// We've only removed the parent frame. Now we have to remove all of
// its children.
nsCOMPtr<nsIAtom> tag;
aContainer->GetTag(*getter_AddRefs(tag));
nsString tagName;
tag->ToString(tagName);
if (tagName == "treeitem")
{
// Calling content removed on each of our content node children
// should do the trick.
PRInt32 count;
for (PRInt32 i = 0; i < count; i++)
{
nsCOMPtr<nsIContent> childContent;
aContainer->ChildAt(i, *getter_AddRefs(childContent));
if (childContent)
{
// Call ContentRemoved.
ContentRemoved(aPresContext, aContainer,
childContent, i);
}
}
}
}
#endif // INCLUDE_XUL
}
}
if (mInitialContainingBlock == childFrame) {
mInitialContainingBlock = nsnull;
}
}
return rv;
}
static void
UpdateViewsForTree(nsIFrame* aFrame, nsIViewManager* aViewManager)
{
nsIView* view;
aFrame->GetView(&view);
if (view) {
const nsStyleColor* color;
const nsStyleDisplay* disp;
aFrame->GetStyleData(eStyleStruct_Color, (const nsStyleStruct*&) color);
aFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&) disp);
view->SetVisibility(NS_STYLE_VISIBILITY_HIDDEN == disp->mVisible ?nsViewVisibility_kHide:nsViewVisibility_kShow);
aViewManager->SetViewOpacity(view, color->mOpacity);
}
// now do children fo frame
PRInt32 listIndex = 0;
nsIAtom* childList = nsnull;
do {
nsIFrame* child = nsnull;
aFrame->FirstChild(childList, &child);
while (child) {
UpdateViewsForTree(child, aViewManager);
child->GetNextSibling(&child);
}
NS_IF_RELEASE(childList);
aFrame->GetAdditionalChildListName(listIndex++, &childList);
} while (childList);
NS_IF_RELEASE(childList);
}
static void
ApplyRenderingChangeToTree(nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
nsIViewManager* viewManager = nsnull;
// 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...
while (nsnull != aFrame) {
// Get the frame's bounding rect
nsRect r;
aFrame->GetRect(r);
r.x = 0;
r.y = 0;
// Get view if this frame has one and trigger an update. If the
// frame doesn't have a view, find the nearest containing view
// (adjusting r's coordinate system to reflect the nesting) and
// update there.
nsIView* view;
aFrame->GetView(&view);
if (nsnull != view) {
} else {
nsPoint offset;
aFrame->GetOffsetFromView(offset, &view);
NS_ASSERTION(nsnull != view, "no view");
r += offset;
}
if (nsnull == viewManager) {
view->GetViewManager(viewManager);
}
UpdateViewsForTree(aFrame, viewManager);
viewManager->UpdateView(view, r, NS_VMREFRESH_NO_SYNC);
aFrame->GetNextInFlow(&aFrame);
}
if (nsnull != viewManager) {
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);
}
}
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
frame->ContentChanged(aPresContext, aContent, aSubContent);
}
return rv;
}
PRInt32
nsCSSFrameConstructor::FindRestyledFramesBelow(nsIFrame* aFrame,
nsIPresContext* aPresContext,
PRInt32 aParentHint,
nsStyleChangeList& aChanges)
{
PRInt32 count = 0;
PRInt32 listIndex = 0;
PRInt32 childChange;
nsIAtom* childList = nsnull;
do {
nsIFrame* child = nsnull;
aFrame->FirstChild(childList, &child);
while (child) {
nsIStyleContext* oldContext;
child->GetStyleContext(&oldContext);
if (oldContext) {
nsIStyleContext* parentContext = oldContext->GetParent();
nsresult didChange = child->ReResolveStyleContext(aPresContext, parentContext,
aParentHint, &aChanges,
&childChange);
NS_IF_RELEASE(parentContext);
if (NS_SUCCEEDED(didChange)) {
if (NS_COMFALSE == didChange) {
count += FindRestyledFramesBelow(child, aPresContext, aParentHint, aChanges);
}
else {
nsIStyleContext* newContext;
child->GetStyleContext(&newContext);
if (newContext) {
PRInt32 hint = NS_STYLE_HINT_NONE;
newContext->CalcStyleDifference(oldContext, hint);
if (aParentHint < hint) { // if child needs more than parent did
aChanges.AppendChange(child, hint);
count++;
if (hint < NS_STYLE_HINT_FRAMECHANGE) { // look for greater change below
count += FindRestyledFramesBelow(child, aPresContext, hint, aChanges);
}
}
NS_RELEASE(newContext);
}
}
}
NS_RELEASE(oldContext);
}
child->GetNextSibling(&child);
}
NS_IF_RELEASE(childList);
aFrame->GetAdditionalChildListName(listIndex++, &childList);
} while (childList);
NS_IF_RELEASE(childList);
return count;
}
NS_IMETHODIMP
nsCSSFrameConstructor::ProcessRestyledFrames(nsStyleChangeList& aChangeList,
nsIPresContext* aPresContext)
{
PRInt32 count = aChangeList.Count();
while (0 < count--) {
nsIFrame* frame;
PRInt32 hint;
aChangeList.ChangeAt(count, frame, hint);
switch (hint) {
case NS_STYLE_HINT_RECONSTRUCT_ALL:
NS_ERROR("This shouldn't happen");
break;
case NS_STYLE_HINT_FRAMECHANGE:
nsIContent* content;
frame->GetContent(&content);
RecreateFramesForContent(aPresContext, content);
NS_IF_RELEASE(content);
break;
case NS_STYLE_HINT_REFLOW:
StyleChangeReflow(aPresContext, frame, nsnull);
break;
case NS_STYLE_HINT_VISUAL:
ApplyRenderingChangeToTree(aPresContext, frame);
break;
case NS_STYLE_HINT_CONTENT:
default:
break;
}
}
aChangeList.Clear();
return NS_OK;
}
PRInt32
nsCSSFrameConstructor::ComputeStateChangeFor(nsIPresContext* aPresContext, nsIFrame* aFrame,
nsStyleChangeList& aChangeList,
PRInt32 aFrameChange)
{
nsIFrame* frame = aFrame;
do {
nsIStyleContext* oldFrameContext;
frame->GetStyleContext(&oldFrameContext);
NS_ASSERTION(nsnull != oldFrameContext, "frame must have style context");
if (oldFrameContext) {
nsIStyleContext* parentContext = oldFrameContext->GetParent();
nsresult didChange = frame->ReResolveStyleContext(aPresContext, parentContext,
aFrameChange, &aChangeList,
&aFrameChange);
NS_IF_RELEASE(parentContext);
if (NS_SUCCEEDED(didChange)) {
if (NS_COMFALSE == didChange) {
// need remap? I don't think so
FindRestyledFramesBelow(frame, aPresContext, aFrameChange, aChangeList);
}
}
NS_RELEASE(oldFrameContext);
}
frame->GetNextInFlow(&frame);
} while (frame);
return aFrameChange;
}
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);
}
}
}
if (primaryFrame1) {
nsStyleChangeList changeList1;
nsStyleChangeList changeList2;
PRInt32 frameChange1 = NS_STYLE_HINT_NONE;
PRInt32 frameChange2 = NS_STYLE_HINT_NONE;
frameChange1 = ComputeStateChangeFor(aPresContext, primaryFrame1, changeList1, frameChange1);
if ((frameChange1 != NS_STYLE_HINT_RECONSTRUCT_ALL) && (primaryFrame2)) {
frameChange2 = ComputeStateChangeFor(aPresContext, primaryFrame2, changeList2, 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:
break;
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame1->ContentChanged(aPresContext, aContent1, nsnull);
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:
break;
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame2->ContentChanged(aPresContext, aContent2, nsnull);
// 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;
frameChange = ComputeStateChangeFor(aPresContext, primaryFrame2, changeList, 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:
break;
case NS_STYLE_HINT_CONTENT:
// let primary frame deal with it
result = primaryFrame2->ContentChanged(aPresContext, aContent2, nsnull);
// 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,
nsIAtom* aAttribute,
PRInt32 aHint)
{
nsresult result = NS_OK;
nsCOMPtr<nsIPresShell> shell;
aPresContext->GetShell(getter_AddRefs(shell));
nsIFrame* primaryFrame;
shell->GetPrimaryFrameFor(aContent, &primaryFrame);
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(nsIStyledContent::GetIID(), (void**)&styledContent);
if (NS_OK == result) {
// Get style hint from HTML content object.
styledContent->GetStyleHintForAttributeChange(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;
nsIFrame* frame = primaryFrame;
nsStyleChangeList changeList;
// put primary frame on list to deal with, re-resolve may update or add next in flows
changeList.AppendChange(primaryFrame, maxHint);
do {
nsIStyleContext* oldFrameContext;
frame->GetStyleContext(&oldFrameContext);
NS_ASSERTION(nsnull != oldFrameContext, "frame must have style context");
if (oldFrameContext) {
nsIStyleContext* parentContext = oldFrameContext->GetParent();
nsresult didChange = frame->ReResolveStyleContext(aPresContext, parentContext, maxHint,
&changeList, &maxHint);
NS_IF_RELEASE(parentContext);
if (NS_SUCCEEDED(didChange)) {
if (NS_COMFALSE == didChange) {
if (maxHint < NS_STYLE_HINT_FRAMECHANGE) {
oldFrameContext->RemapStyle(aPresContext);
FindRestyledFramesBelow(frame, aPresContext, maxHint, changeList);
}
}
}
NS_RELEASE(oldFrameContext);
}
frame->GetNextInFlow(&frame);
} while (frame);
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:
break;
case NS_STYLE_HINT_CONTENT:
// let the frame deal with it, since we don't know how to
result = primaryFrame->AttributeChanged(aPresContext, aContent, 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 (reframe) {
result = ReconstructDocElementHierarchy(aPresContext);
}
else if (restyle) {
nsIStyleContext* sc;
frame->GetStyleContext(&sc);
sc->RemapStyle(aPresContext);
NS_RELEASE(sc);
// XXX hack, skip the root and scrolling frames
frame->FirstChild(nsnull, &frame);
frame->FirstChild(nsnull, &frame);
if (reflow) {
StyleChangeReflow(aPresContext, frame, nsnull);
}
else if (render) {
ApplyRenderingChangeToTree(aPresContext, frame);
}
}
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(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIFrame* aParentFrame,
nsIFrame*& aFrame)
{
nsIDOMHTMLImageElement* imageElement;
nsresult rv;
// Initialize OUT parameter
aFrame = nsnull;
rv = aContent->QueryInterface(kIDOMHTMLImageElementIID, (void**)&imageElement);
if (NS_SUCCEEDED(rv)) {
nsAutoString altText;
// The "alt" attribute specifies alternate text that is rendered
// when the image can not be displayed
imageElement->GetAlt(altText);
if (0 == altText.Length()) {
// If there's no "alt" attribute, then use the value of the "title"
// attribute
imageElement->GetTitle(altText);
}
if (0 == altText.Length()) {
// If there's no "title" attribute, then use the filename minus the
// extension
imageElement->GetSrc(altText);
if (altText.Length() > 0) {
// Trim off the path part of the filename
PRInt32 offset = altText.RFind('/');
if (offset >= 0) {
altText.Cut(0, offset + 1);
}
// Trim off the extension
offset = altText.RFind('.');
if (offset >= 0) {
altText.Truncate(offset);
}
}
}
NS_RELEASE(imageElement);
// Create a text content element for the alternate text
nsCOMPtr<nsIContent> altTextContent;
nsIDOMCharacterData* domData;
NS_NewTextNode(getter_AddRefs(altTextContent));
altTextContent->QueryInterface(kIDOMCharacterDataIID, (void**)&domData);
domData->SetData(altText);
NS_RELEASE(domData);
// Create either an inline frame, block frame, or area frame
nsIFrame* containerFrame;
const nsStyleDisplay* display = (const nsStyleDisplay*)
aStyleContext->GetStyleData(eStyleStruct_Display);
const nsStylePosition* position = (const nsStylePosition*)
aStyleContext->GetStyleData(eStyleStruct_Position);
if (position->IsAbsolutelyPositioned()) {
NS_NewAreaFrame(containerFrame, NS_BLOCK_MARGIN_ROOT);
} else if (display->IsFloating() || (NS_STYLE_DISPLAY_BLOCK == display->mDisplay)) {
NS_NewBlockFrame(containerFrame, 0);
} else {
NS_NewInlineFrame(containerFrame);
}
containerFrame->Init(*aPresContext, aContent, aParentFrame, aStyleContext, nsnull);
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, containerFrame,
aStyleContext, PR_FALSE);
// Create a text frame to display the alt-text. It gets a pseudo-element
// style context
nsIFrame* textFrame;
nsIStyleContext* textStyleContext;
NS_NewTextFrame(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;
}
NS_IMETHODIMP
nsCSSFrameConstructor::CantRenderReplacedElement(nsIPresContext* aPresContext,
nsIFrame* aFrame)
{
nsCOMPtr<nsIContent> content;
nsCOMPtr<nsIAtom> tag;
nsIFrame* parentFrame;
nsresult rv = NS_OK;
aFrame->GetParent(&parentFrame);
// Get the content object associated with aFrame
aFrame->GetContent(getter_AddRefs(content));
NS_ASSERTION(content, "null content object");
content->GetTag(*getter_AddRefs(tag));
// Get the style context and determine if the frame is floated or
// absolutely positioned
nsCOMPtr<nsIStyleContext> styleContext;
aFrame->GetStyleContext(getter_AddRefs(styleContext));
const nsStyleDisplay* display = (const nsStyleDisplay*)
styleContext->GetStyleData(eStyleStruct_Display);
const nsStylePosition* position = (const nsStylePosition*)
styleContext->GetStyleData(eStyleStruct_Position);
nsIAtom* listName = nsnull;
if (NS_STYLE_POSITION_ABSOLUTE == position->mPosition) {
listName = nsLayoutAtoms::absoluteList;
} else if (NS_STYLE_POSITION_FIXED == position->mPosition) {
listName = nsLayoutAtoms::fixedList;
} else if (display->IsFloating()) {
listName = nsLayoutAtoms::floaterList;
}
// 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(listName, &firstChild);
nsFrameList frameList(firstChild);
nsIFrame* prevSibling = frameList.GetPrevSiblingFor(aFrame);
// 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(aPresContext, content, styleContext,
parentFrame, newFrame);
if (NS_SUCCEEDED(rv)) {
// Delete the current frame and insert the new frame
parentFrame->RemoveFrame(*aPresContext, *presShell, listName, aFrame);
if (placeholderFrame) {
// Remove the association between the old frame and its placeholder
presShell->SetPlaceholderFrameFor(aFrame, nsnull);
// Reuse the existing placeholder frame, and add an association to the
// new frame
presShell->SetPlaceholderFrameFor(newFrame, placeholderFrame);
if (nsLayoutAtoms::floaterList == listName) {
// Floaters have a special placeholder frame that points back to
// the anchored item
nsPlaceholderFrame* floaterPlaceholderFrame;
floaterPlaceholderFrame = (nsPlaceholderFrame*)placeholderFrame;
floaterPlaceholderFrame->SetAnchoredItem(newFrame);
}
}
parentFrame->InsertFrames(*aPresContext, *presShell, listName, prevSibling, newFrame);
}
} else if ((nsHTMLAtoms::object == tag.get()) ||
(nsHTMLAtoms::embed == tag.get()) ||
(nsHTMLAtoms::applet == tag.get())) {
// It's an OBJECT element or APPLET, so we should display the contents
// instead. Get the containing block for absolutely positioned elements
nsIFrame* absoluteContainingBlock =
GetAbsoluteContainingBlock(aPresContext, parentFrame);
// Get the containing block for floating elements
nsIFrame* floaterContainingBlock =
GetFloaterContainingBlock(aPresContext, parentFrame);
// Create a frame based on the display type
nsAbsoluteItems absoluteItems(absoluteContainingBlock);
nsAbsoluteItems floaterList(floaterContainingBlock);
nsFrameItems frameItems;
nsAbsoluteItems fixedItems(mFixedContainingBlock);
rv = ConstructFrameByDisplayType(aPresContext, display, content,
parentFrame, styleContext,
absoluteItems, frameItems,
fixedItems, floaterList);
nsIFrame* newFrame = frameItems.childList;
if (NS_SUCCEEDED(rv)) {
// Delete the current frame and insert the new frame
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
parentFrame->RemoveFrame(*aPresContext, *presShell, nsnull, aFrame);
parentFrame->InsertFrames(*aPresContext, *presShell, nsnull, 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 (nsnull != absoluteItems.childList) {
rv = absoluteItems.containingBlock->AppendFrames(*aPresContext, *presShell,
nsLayoutAtoms::absoluteList,
absoluteItems.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 (nsnull != fixedItems.childList) {
rv = fixedItems.containingBlock->AppendFrames(*aPresContext, *presShell,
nsLayoutAtoms::fixedList,
fixedItems.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 (floaterList.childList) {
rv = floaterList.containingBlock->AppendFrames(*aPresContext,
*presShell,
nsLayoutAtoms::floaterList,
floaterList.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(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableOuterFrame(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(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(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");
// Get the containing block for absolutely positioned elements
nsIFrame* absoluteContainingBlock = GetAbsoluteContainingBlock(aPresContext,
newFrame);
// 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;
nsAbsoluteItems absoluteItems(absoluteContainingBlock);
nsAbsoluteItems fixedItems(mFixedContainingBlock);
nsAbsoluteItems floaterList(captionFrame);
NS_NewAreaFrame(captionFrame, 0);
captionFrame->Init(*aPresContext, caption, newFrame, captionStyle, nsnull);
ProcessChildren(aPresContext, caption, captionFrame, absoluteItems,
childItems, fixedItems, floaterList, PR_TRUE);
captionFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
// XXX Deal with absolute and fixed frames...
if (floaterList.childList) {
captionFrame->SetInitialChildList(*aPresContext,
nsLayoutAtoms::floaterList,
floaterList.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(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIFrame* aParentFrame,
nsIContent* aContent,
nsIStyleContext* aStyleContext,
nsIFrame** aContinuingFrame)
{
nsIFrame* newFrame;
nsresult rv;
rv = NS_NewTableFrame(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(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)) {
// Get the containing block for absolutely positioned elements
nsIFrame* absoluteContainingBlock = GetAbsoluteContainingBlock(aPresContext,
newFrame);
// Replicate the header/footer frame
nsIFrame* headerFooterFrame;
nsFrameItems childItems;
nsAbsoluteItems absoluteItems(absoluteContainingBlock);
nsAbsoluteItems fixedItems(mFixedContainingBlock);
nsAbsoluteItems floaterList(nsnull);
nsIContent* headerFooter;
NS_NewTableRowGroupFrame(headerFooterFrame);
rowGroupFrame->GetContent(&headerFooter);
headerFooterFrame->Init(*aPresContext, headerFooter, newFrame,
rowGroupStyle, nsnull);
ProcessChildren(aPresContext, headerFooter, headerFooterFrame, absoluteItems,
childItems, fixedItems, floaterList);
NS_ASSERTION(!floaterList.childList, "unexpected floated element");
NS_RELEASE(headerFooter);
headerFooterFrame->SetInitialChildList(*aPresContext, nsnull, childItems.childList);
// Table specific initialization
((nsTableRowGroupFrame*)headerFooterFrame)->InitRepeatedFrame
((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(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_NewTextFrame(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(newFrame);
if (NS_SUCCEEDED(rv)) {
newFrame->Init(*aPresContext, content, aParentFrame, styleContext, aFrame);
nsHTMLContainerFrame::CreateViewForFrame(*aPresContext, newFrame,
styleContext, PR_FALSE);
}
} else if (nsHTMLAtoms::lineFrame == frameType) {
rv = NS_NewFirstLineFrame(&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(newFrame, 0);
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(newFrame, 0);
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(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(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(aPresContext, aFrame, aParentFrame,
content, styleContext, &newFrame);
} else if (nsLayoutAtoms::tableFrame == frameType) {
rv = CreateContinuingTableFrame(aPresContext, aFrame, aParentFrame,
content, styleContext, &newFrame);
} else if (nsLayoutAtoms::tableRowGroupFrame == frameType) {
rv = NS_NewTableRowGroupFrame(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(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(nsnull, &cellFrame);
while (cellFrame) {
nsIAtom* tableType;
// See if it's a table cell frame
cellFrame->GetFrameType(&tableType);
if (nsLayoutAtoms::tableCellFrame == tableType) {
nsIFrame* continuingCellFrame;
CreateContinuingFrame(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(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(nsnull, &areaFrame);
CreateContinuingFrame(aPresContext, areaFrame, newFrame, &continuingAreaFrame);
// Set the table cell's initial child list
newFrame->SetInitialChildList(*aPresContext, nsnull, continuingAreaFrame);
}
} 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;
}
nsresult
nsCSSFrameConstructor::RecreateFramesForContent(nsIPresContext* aPresContext,
nsIContent* aContent)
{
nsresult rv = NS_OK;
nsIContent *container;
rv = aContent->GetParent(container);
if (container) {
PRInt32 indexInContainer;
rv = container->IndexOf(aContent, indexInContainer);
if (NS_OK == rv) {
// First, remove the frames associated with the content object on which the
// attribute change occurred.
rv = ContentRemoved(aPresContext, container, aContent, indexInContainer);
if (NS_OK == rv) {
// Now, recreate the frames associated with this content object.
rv = ContentInserted(aPresContext, container, aContent, indexInContainer);
}
}
NS_RELEASE(container);
}
return rv;
}
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