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Mozilla/mozilla/layout/tables/nsTableOuterFrame.cpp
bzbarsky%mit.edu ba5badedcb Change the FrameNeedsReflow API to pass the dirty flags to be added directly to 
the method, instead of setting them before calling the method.  That way we can
avoid reflowing the ancestor of a reflow root which is not itself dirty but has
dirty children.  This also makes it harder to set dirty bits inconsistently
with the FrameNeedsReflow call.  Bug 378784, r+sr=dbaron, pending rbs' review
on the mathml parts.


git-svn-id: svn://10.0.0.236/trunk@226007 18797224-902f-48f8-a5cc-f745e15eee43
2007-05-06 19:16:52 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsTableOuterFrame.h"
#include "nsTableFrame.h"
#include "nsStyleContext.h"
#include "nsStyleConsts.h"
#include "nsPresContext.h"
#include "nsIRenderingContext.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "prinrval.h"
#include "nsGkAtoms.h"
#include "nsHTMLParts.h"
#include "nsIPresShell.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsIServiceManager.h"
#include "nsIDOMNode.h"
#include "nsDisplayList.h"
#include "nsLayoutUtils.h"
/* ----------- nsTableCaptionFrame ---------- */
#define NS_TABLE_FRAME_CAPTION_LIST_INDEX 0
#define NO_SIDE 100
// caption frame
nsTableCaptionFrame::nsTableCaptionFrame(nsStyleContext* aContext):
nsBlockFrame(aContext)
{
// shrink wrap
SetFlags(NS_BLOCK_SPACE_MGR);
}
nsTableCaptionFrame::~nsTableCaptionFrame()
{
}
nsIAtom*
nsTableCaptionFrame::GetType() const
{
return nsGkAtoms::tableCaptionFrame;
}
/* virtual */ nscoord
nsTableOuterFrame::GetBaseline() const
{
nsIFrame* kid = mFrames.FirstChild();
if (!kid) {
NS_NOTREACHED("no inner table");
return nsHTMLContainerFrame::GetBaseline();
}
return kid->GetBaseline() + kid->GetPosition().y;
}
inline PRBool IsSideCaption(nsIFrame* aCaptionFrame)
{
PRUint8 captionSide = aCaptionFrame->GetStyleTableBorder()->mCaptionSide;
return captionSide == NS_SIDE_LEFT || captionSide == NS_SIDE_RIGHT;
}
/* virtual */ nsSize
nsTableCaptionFrame::ComputeAutoSize(nsIRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, PRBool aShrinkWrap)
{
nsSize result = nsBlockFrame::ComputeAutoSize(aRenderingContext, aCBSize,
aAvailableWidth, aMargin, aBorder, aPadding, aShrinkWrap);
if (IsSideCaption(this)) {
result.width = GetMinWidth(aRenderingContext);
}
return result;
}
NS_IMETHODIMP
nsTableCaptionFrame::GetParentStyleContextFrame(nsPresContext* aPresContext,
nsIFrame** aProviderFrame,
PRBool* aIsChild)
{
// The caption's style context parent is the inner frame, unless
// it's anonymous.
nsIFrame* outerFrame = GetParent();
if (outerFrame && outerFrame->GetType() == nsGkAtoms::tableOuterFrame) {
nsIFrame* innerFrame = outerFrame->GetFirstChild(nsnull);
if (innerFrame) {
*aProviderFrame =
nsFrame::CorrectStyleParentFrame(innerFrame,
GetStyleContext()->GetPseudoType());
*aIsChild = PR_FALSE;
return NS_OK;
}
}
NS_NOTREACHED("Where is our inner table frame?");
return nsBlockFrame::GetParentStyleContextFrame(aPresContext, aProviderFrame,
aIsChild);
}
#ifdef NS_DEBUG
NS_IMETHODIMP
nsTableCaptionFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("Caption"), aResult);
}
#endif
nsIFrame*
NS_NewTableCaptionFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsTableCaptionFrame(aContext);
}
/* ----------- nsTableOuterFrame ---------- */
NS_IMPL_ADDREF_INHERITED(nsTableOuterFrame, nsHTMLContainerFrame)
NS_IMPL_RELEASE_INHERITED(nsTableOuterFrame, nsHTMLContainerFrame)
nsTableOuterFrame::nsTableOuterFrame(nsStyleContext* aContext):
nsHTMLContainerFrame(aContext)
{
}
nsTableOuterFrame::~nsTableOuterFrame()
{
}
nsresult nsTableOuterFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsITableLayout)))
{ // note there is no addref here, frames are not addref'd
*aInstancePtr = (void*)(nsITableLayout*)this;
return NS_OK;
}
return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtr);
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP nsTableOuterFrame::GetAccessible(nsIAccessible** aAccessible)
{
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
return accService->CreateHTMLTableAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
/* virtual */ PRBool
nsTableOuterFrame::IsContainingBlock() const
{
return PR_FALSE;
}
NS_IMETHODIMP
nsTableOuterFrame::Init(
nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsresult rv = nsHTMLContainerFrame::Init(aContent, aParent, aPrevInFlow);
// record that children that are ignorable whitespace should be excluded
mState |= NS_FRAME_EXCLUDE_IGNORABLE_WHITESPACE;
return rv;
}
void
nsTableOuterFrame::Destroy()
{
mCaptionFrames.DestroyFrames();
nsHTMLContainerFrame::Destroy();
}
nsIFrame*
nsTableOuterFrame::GetFirstChild(nsIAtom* aListName) const
{
if (nsGkAtoms::captionList == aListName) {
return mCaptionFrames.FirstChild();
}
if (!aListName) {
return mFrames.FirstChild();
}
return nsnull;
}
nsIAtom*
nsTableOuterFrame::GetAdditionalChildListName(PRInt32 aIndex) const
{
if (aIndex == NS_TABLE_FRAME_CAPTION_LIST_INDEX) {
return nsGkAtoms::captionList;
}
return nsnull;
}
NS_IMETHODIMP
nsTableOuterFrame::SetInitialChildList(nsIAtom* aListName,
nsIFrame* aChildList)
{
if (nsGkAtoms::captionList == aListName) {
// the frame constructor already checked for table-caption display type
mCaptionFrames.SetFrames(aChildList);
mCaptionFrame = mCaptionFrames.FirstChild();
}
else {
NS_ASSERTION(!aListName, "wrong childlist");
NS_ASSERTION(mFrames.IsEmpty(), "Frame leak!");
mFrames.SetFrames(aChildList);
mInnerTableFrame = nsnull;
if (aChildList) {
if (nsGkAtoms::tableFrame == aChildList->GetType()) {
mInnerTableFrame = (nsTableFrame*)aChildList;
}
else {
NS_ERROR("expected a table frame");
return NS_ERROR_INVALID_ARG;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsTableOuterFrame::AppendFrames(nsIAtom* aListName,
nsIFrame* aFrameList)
{
nsresult rv;
// We only have two child frames: the inner table and a caption frame.
// The inner frame is provided when we're initialized, and it cannot change
if (nsGkAtoms::captionList == aListName) {
NS_ASSERTION(!aFrameList ||
aFrameList->GetType() == nsGkAtoms::tableCaptionFrame,
"appending non-caption frame to captionList");
mCaptionFrames.AppendFrames(this, aFrameList);
mCaptionFrame = mCaptionFrames.FirstChild();
rv = NS_OK;
// Reflow the new caption frame. It's already marked dirty, so
// just tell the pres shell.
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN);
}
else {
NS_PRECONDITION(PR_FALSE, "unexpected child list");
rv = NS_ERROR_UNEXPECTED;
}
return rv;
}
NS_IMETHODIMP
nsTableOuterFrame::InsertFrames(nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList)
{
if (nsGkAtoms::captionList == aListName) {
NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this,
"inserting after sibling frame with different parent");
NS_ASSERTION(!aFrameList ||
aFrameList->GetType() == nsGkAtoms::tableCaptionFrame,
"inserting non-caption frame into captionList");
mCaptionFrames.InsertFrames(nsnull, aPrevFrame, aFrameList);
mCaptionFrame = mCaptionFrames.FirstChild();
return NS_OK;
}
else {
NS_PRECONDITION(!aPrevFrame, "invalid previous frame");
return AppendFrames(aListName, aFrameList);
}
}
NS_IMETHODIMP
nsTableOuterFrame::RemoveFrame(nsIAtom* aListName,
nsIFrame* aOldFrame)
{
// We only have two child frames: the inner table and one caption frame.
// The inner frame can't be removed so this should be the caption
NS_PRECONDITION(nsGkAtoms::captionList == aListName, "can't remove inner frame");
PRUint8 captionSide = GetCaptionSide();
if (NS_SIDE_LEFT == captionSide || NS_SIDE_RIGHT == captionSide) {
// The old caption width had an effect on the inner table width so
// we're going to need to reflow it. Mark it dirty
mInnerTableFrame->AddStateBits(NS_FRAME_IS_DIRTY);
}
// Remove the frame and destroy it
mCaptionFrames.DestroyFrame(aOldFrame);
mCaptionFrame = mCaptionFrames.FirstChild();
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange,
NS_FRAME_HAS_DIRTY_CHILDREN); // also means child removed
return NS_OK;
}
NS_METHOD
nsTableOuterFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// No border, background or outline are painted because they all belong
// to the inner table.
if (!IsVisibleInSelection(aBuilder))
return NS_OK;
// If there's no caption, take a short cut to avoid having to create
// the special display list set and then sort it.
if (!mCaptionFrame)
return BuildDisplayListForInnerTable(aBuilder, aDirtyRect, aLists);
nsDisplayListCollection set;
nsresult rv = BuildDisplayListForInnerTable(aBuilder, aDirtyRect, set);
NS_ENSURE_SUCCESS(rv, rv);
nsDisplayListSet captionSet(set, set.BlockBorderBackgrounds());
rv = BuildDisplayListForChild(aBuilder, mCaptionFrame, aDirtyRect, captionSet);
NS_ENSURE_SUCCESS(rv, rv);
// Now we have to sort everything by content order, since the caption
// may be somewhere inside the table
set.SortAllByContentOrder(aBuilder, GetContent());
set.MoveTo(aLists);
return NS_OK;
}
nsresult
nsTableOuterFrame::BuildDisplayListForInnerTable(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// Just paint the regular children, but the children's background is our
// true background (there should only be one, the real table)
nsIFrame* kid = mFrames.FirstChild();
// The children should be in content order
while (kid) {
nsresult rv = BuildDisplayListForChild(aBuilder, kid, aDirtyRect, aLists);
NS_ENSURE_SUCCESS(rv, rv);
kid = kid->GetNextSibling();
}
return NS_OK;
}
NS_IMETHODIMP nsTableOuterFrame::SetSelected(nsPresContext* aPresContext,
nsIDOMRange *aRange,
PRBool aSelected,
nsSpread aSpread)
{
nsresult result = nsFrame::SetSelected(aPresContext, aRange,aSelected, aSpread);
if (NS_SUCCEEDED(result) && mInnerTableFrame)
return mInnerTableFrame->SetSelected(aPresContext, aRange,aSelected, aSpread);
return result;
}
NS_IMETHODIMP
nsTableOuterFrame::GetParentStyleContextFrame(nsPresContext* aPresContext,
nsIFrame** aProviderFrame,
PRBool* aIsChild)
{
// The table outer frame and the (inner) table frame split the style
// data by giving the table frame the style context associated with
// the table content node and creating a style context for the outer
// frame that is a *child* of the table frame's style context,
// matching the ::-moz-table-outer pseudo-element. html.css has a
// rule that causes that pseudo-element (and thus the outer table)
// to inherit *some* style properties from the table frame. The
// children of the table inherit directly from the inner table, and
// the outer table's style context is a leaf.
if (!mInnerTableFrame) {
*aProviderFrame = this;
*aIsChild = PR_FALSE;
return NS_ERROR_FAILURE;
}
*aProviderFrame = mInnerTableFrame;
*aIsChild = PR_TRUE;
return NS_OK;
}
// INCREMENTAL REFLOW HELPER FUNCTIONS
void
nsTableOuterFrame::InitChildReflowState(nsPresContext& aPresContext,
nsHTMLReflowState& aReflowState)
{
nsMargin collapseBorder;
nsMargin collapsePadding(0,0,0,0);
nsMargin* pCollapseBorder = nsnull;
nsMargin* pCollapsePadding = nsnull;
if ((aReflowState.frame == mInnerTableFrame) && (mInnerTableFrame->IsBorderCollapse())) {
collapseBorder = mInnerTableFrame->GetIncludedOuterBCBorder();
pCollapseBorder = &collapseBorder;
pCollapsePadding = &collapsePadding;
}
aReflowState.Init(&aPresContext, -1, -1, pCollapseBorder, pCollapsePadding);
}
// get the margin and padding data. nsHTMLReflowState doesn't handle the
// case of auto margins
void
nsTableOuterFrame::GetMargin(nsPresContext* aPresContext,
const nsHTMLReflowState& aOuterRS,
nsIFrame* aChildFrame,
nscoord aAvailWidth,
nsMargin& aMargin)
{
// construct a reflow state to compute margin and padding. Auto margins
// will not be computed at this time.
// create and init the child reflow state
// XXX We really shouldn't construct a reflow state to do this.
nsHTMLReflowState childRS(aPresContext, aOuterRS, aChildFrame,
nsSize(aAvailWidth, aOuterRS.availableHeight),
-1, -1, PR_FALSE);
InitChildReflowState(*aPresContext, childRS);
aMargin = childRS.mComputedMargin;
}
static
nscoord CalcAutoMargin(nscoord aAutoMargin,
nscoord aOppositeMargin,
nscoord aContainBlockSize,
nscoord aFrameSize)
{
nscoord margin;
if (NS_AUTOMARGIN == aOppositeMargin)
margin = (aContainBlockSize - aFrameSize) / 2;
else {
margin = aContainBlockSize - aFrameSize - aOppositeMargin;
}
return PR_MAX(0, margin);
}
static nsSize
GetContainingBlockSize(const nsHTMLReflowState& aOuterRS)
{
nsSize size(0,0);
const nsHTMLReflowState* containRS =
aOuterRS.mCBReflowState;
if (containRS) {
size.width = containRS->ComputedWidth();
if (NS_UNCONSTRAINEDSIZE == size.width) {
size.width = 0;
}
size.height = containRS->mComputedHeight;
if (NS_UNCONSTRAINEDSIZE == size.height) {
size.height = 0;
}
}
return size;
}
void
nsTableOuterFrame::InvalidateDamage(PRUint8 aCaptionSide,
const nsSize& aOuterSize,
PRBool aInnerChanged,
PRBool aCaptionChanged,
nsRect* aOldOverflowArea)
{
if (!aInnerChanged && !aCaptionChanged) return;
nsRect damage;
if (aInnerChanged && aCaptionChanged) {
damage = nsRect(0, 0, aOuterSize.width, aOuterSize.height);
if (aOldOverflowArea) {
damage.UnionRect(damage, *aOldOverflowArea);
}
nsRect* overflowArea = GetOverflowAreaProperty();
if (overflowArea) {
damage.UnionRect(damage, *overflowArea);
}
}
else {
nsRect captionRect(0,0,0,0);
nsRect innerRect = mInnerTableFrame->GetRect();
if (mCaptionFrame) {
captionRect = mCaptionFrame->GetRect();
}
damage.x = 0;
damage.width = aOuterSize.width;
switch(aCaptionSide) {
case NS_SIDE_BOTTOM:
if (aCaptionChanged) {
damage.y = innerRect.y;
damage.height = aOuterSize.height - damage.y;
}
else { // aInnerChanged
damage.y = 0;
damage.height = captionRect.y;
}
break;
case NS_SIDE_LEFT:
if (aCaptionChanged) {
damage.width = innerRect.x;
damage.y = 0;
damage.height = captionRect.YMost();
}
else { // aInnerChanged
damage.x = captionRect.XMost();
damage.width = innerRect.XMost() - damage.x;
damage.y = 0;
damage.height = innerRect.YMost();
}
break;
case NS_SIDE_RIGHT:
if (aCaptionChanged) {
damage.x = innerRect.XMost();
damage.width -= damage.x;
damage.y = 0;
damage.height = captionRect.YMost();
}
else { // aInnerChanged
damage.width -= captionRect.width;
damage.y = 0;
damage.height = innerRect.YMost();
}
break;
default: // NS_SIDE_TOP
if (aCaptionChanged) {
damage.y = 0;
damage.height = innerRect.y;
}
else { // aInnerChanged
damage.y = captionRect.y;
damage.height = aOuterSize.height - damage.y;
}
break;
}
nsIFrame* kidFrame = aCaptionChanged ? mCaptionFrame : mInnerTableFrame;
ConsiderChildOverflow(damage, kidFrame);
if (aOldOverflowArea) {
damage.UnionRect(damage, *aOldOverflowArea);
}
}
Invalidate(damage);
}
/* virtual */ nscoord
nsTableOuterFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
{
nscoord width = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
mInnerTableFrame, nsLayoutUtils::MIN_WIDTH);
DISPLAY_MIN_WIDTH(this, width);
if (mCaptionFrame) {
nscoord capWidth =
nsLayoutUtils::IntrinsicForContainer(aRenderingContext, mCaptionFrame,
nsLayoutUtils::MIN_WIDTH);
switch(GetCaptionSide()) {
case NS_SIDE_LEFT:
case NS_SIDE_RIGHT:
width += capWidth;
break;
default:
if (capWidth > width) {
width = capWidth;
}
}
}
return width;
}
/* virtual */ nscoord
nsTableOuterFrame::GetPrefWidth(nsIRenderingContext *aRenderingContext)
{
nscoord maxWidth;
DISPLAY_PREF_WIDTH(this, maxWidth);
maxWidth = nsLayoutUtils::IntrinsicForContainer(aRenderingContext,
mInnerTableFrame, nsLayoutUtils::PREF_WIDTH);
if (mCaptionFrame) {
PRUint8 captionSide = GetCaptionSide();
switch(captionSide) {
case NS_SIDE_LEFT:
case NS_SIDE_RIGHT:
{
nscoord capMin =
nsLayoutUtils::IntrinsicForContainer(aRenderingContext, mCaptionFrame,
nsLayoutUtils::MIN_WIDTH);
maxWidth += capMin;
}
break;
case NS_SIDE_TOP:
case NS_SIDE_BOTTOM:
default: // no caption
{
nscoord capPref =
nsLayoutUtils::IntrinsicForContainer(aRenderingContext, mCaptionFrame,
nsLayoutUtils::PREF_WIDTH);
maxWidth = PR_MAX(maxWidth, capPref);
}
}
}
return maxWidth;
}
/* virtual */ nsSize
nsTableOuterFrame::ComputeAutoSize(nsIRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, PRBool aShrinkWrap)
{
if (!aShrinkWrap)
return nsHTMLContainerFrame::ComputeAutoSize(aRenderingContext, aCBSize,
aAvailableWidth, aMargin, aBorder, aPadding, aShrinkWrap);
// When we're shrink-wrapping, our auto size needs to wrap around the
// actual size of the table, which (if it is specified as a percent)
// could be something that is not reflected in our GetMinWidth and
// GetPrefWidth. See bug 349457 for an example.
// The outer table's children do not use it as a containing block.
nsCSSOffsetState innerOffsets(mInnerTableFrame, aRenderingContext,
aCBSize.width);
nsSize tableSize = mInnerTableFrame->ComputeSize(aRenderingContext, aCBSize,
aAvailableWidth,
nsSize(innerOffsets.mComputedMargin.LeftRight(),
innerOffsets.mComputedMargin.TopBottom()),
nsSize(innerOffsets.mComputedBorderPadding.LeftRight() -
innerOffsets.mComputedPadding.LeftRight(),
innerOffsets.mComputedBorderPadding.TopBottom() -
innerOffsets.mComputedPadding.TopBottom()),
nsSize(innerOffsets.mComputedPadding.LeftRight(),
innerOffsets.mComputedPadding.TopBottom()),
aShrinkWrap);
nscoord width = tableSize.width + innerOffsets.mComputedMargin.LeftRight() +
innerOffsets.mComputedBorderPadding.LeftRight();
if (mCaptionFrame) {
nsCSSOffsetState capOffsets(mCaptionFrame, aRenderingContext,
aCBSize.width);
nsSize capSize = mCaptionFrame->ComputeSize(aRenderingContext, aCBSize,
aAvailableWidth,
nsSize(capOffsets.mComputedMargin.LeftRight(),
capOffsets.mComputedMargin.TopBottom()),
nsSize(capOffsets.mComputedBorderPadding.LeftRight() -
capOffsets.mComputedPadding.LeftRight(),
capOffsets.mComputedBorderPadding.TopBottom() -
capOffsets.mComputedPadding.TopBottom()),
nsSize(capOffsets.mComputedPadding.LeftRight(),
capOffsets.mComputedPadding.TopBottom()),
aShrinkWrap);
PRUint8 captionSide = GetCaptionSide();
nscoord capWidth = capSize.width + capOffsets.mComputedMargin.LeftRight() +
capOffsets.mComputedBorderPadding.LeftRight();
if (captionSide == NS_SIDE_LEFT || captionSide == NS_SIDE_RIGHT) {
width += capWidth;
} else {
if (capWidth > width)
width = capWidth;
}
}
return nsSize(width, NS_UNCONSTRAINEDSIZE);
}
PRUint8
nsTableOuterFrame::GetCaptionSide()
{
if (mCaptionFrame) {
return mCaptionFrame->GetStyleTableBorder()->mCaptionSide;
}
else {
return NO_SIDE; // no caption
}
}
PRUint8
nsTableOuterFrame::GetCaptionVerticalAlign()
{
const nsStyleCoord& va = mCaptionFrame->GetStyleTextReset()->mVerticalAlign;
return (va.GetUnit() == eStyleUnit_Enumerated)
? va.GetIntValue()
: NS_STYLE_VERTICAL_ALIGN_TOP;
}
void
nsTableOuterFrame::SetDesiredSize(PRUint8 aCaptionSide,
const nsMargin& aInnerMargin,
const nsMargin& aCaptionMargin,
nscoord& aWidth,
nscoord& aHeight)
{
aWidth = aHeight = 0;
nsRect innerRect = mInnerTableFrame->GetRect();
nscoord innerWidth = innerRect.width;
nsRect captionRect(0,0,0,0);
nscoord captionWidth = 0;
if (mCaptionFrame) {
captionRect = mCaptionFrame->GetRect();
captionWidth = captionRect.width;
}
switch(aCaptionSide) {
case NS_SIDE_LEFT:
aWidth = PR_MAX(aInnerMargin.left, aCaptionMargin.left + captionWidth + aCaptionMargin.right) +
innerWidth + aInnerMargin.right;
break;
case NS_SIDE_RIGHT:
aWidth = PR_MAX(aInnerMargin.right, aCaptionMargin.left + captionWidth + aCaptionMargin.right) +
innerWidth + aInnerMargin.left;
break;
default:
aWidth = aInnerMargin.left + innerWidth + aInnerMargin.right;
aWidth = PR_MAX(aWidth, captionRect.XMost() + aCaptionMargin.right);
}
aHeight = innerRect.YMost() + aInnerMargin.bottom;
aHeight = PR_MAX(aHeight, captionRect.YMost() + aCaptionMargin.bottom);
}
// XXX This is now unused, but it probably should be used!
void
nsTableOuterFrame::BalanceLeftRightCaption(PRUint8 aCaptionSide,
const nsMargin& aInnerMargin,
const nsMargin& aCaptionMargin,
nscoord& aInnerWidth,
nscoord& aCaptionWidth)
{
/* balance the caption and inner table widths to ensure space for percent widths
* Percent widths for captions or the inner table frame can determine how much of the
* available width is used and how the available width is distributed between those frames
* The inner table frame has already a quite sophisticated treatment of percentage widths
* (see BasicTableLayoutStrategy.cpp). So it acts as master in the below computations.
* There are four possible scenarios
* a) None of the frames have a percentage width - then the aInnerWidth and aCaptionwidth will not change
* b) Only the inner frame has a percentage width - this is handled in BasicTableLayoutStrategy.cpp,
* both widths will not change
* c) Only the caption has a percentage width - then the overall width (ow) will be different depending on
* the caption side. For the left side
* ow = aCaptionMargin.left + aCaptionWidth + aCaptionMargin.right + aInnerwidth + aInnerMargin.right
* aCaptionWidth = capPercent * ow
* solving this equation for aCaptionWidth gives:
* aCaptionWidth = capPercent/(1-capPercent) *
* (aCaptionMargin.left + aCaptionMargin.right + aInnerwidth + aInnerMargin.right)
* this result will cause problems for capPercent >= 1, in these cases the algorithm will now bail out
* a similar expression can be found for the right case
* d) both frames have percent widths in this case the caption width will be the inner width multiplied
* by the weight capPercent/innerPercent
*/
float capPercent = -1.0;
float innerPercent = -1.0;
const nsStylePosition* position = mCaptionFrame->GetStylePosition();
if (eStyleUnit_Percent == position->mWidth.GetUnit()) {
capPercent = position->mWidth.GetPercentValue();
if (capPercent >= 1.0)
return;
}
position = mInnerTableFrame->GetStylePosition();
if (eStyleUnit_Percent == position->mWidth.GetUnit()) {
innerPercent = position->mWidth.GetPercentValue();
if (innerPercent >= 1.0)
return;
}
if ((capPercent <= 0.0) && (innerPercent <= 0.0))
return;
if (innerPercent <= 0.0) {
if (NS_SIDE_LEFT == aCaptionSide)
aCaptionWidth= (nscoord) ((capPercent / (1.0 - capPercent)) * (aCaptionMargin.left + aCaptionMargin.right +
aInnerWidth + aInnerMargin.right));
else
aCaptionWidth= (nscoord) ((capPercent / (1.0 - capPercent)) * (aCaptionMargin.left + aCaptionMargin.right +
aInnerWidth + aInnerMargin.left));
}
else {
aCaptionWidth = (nscoord) ((capPercent / innerPercent) * aInnerWidth);
}
}
nsresult
nsTableOuterFrame::GetCaptionOrigin(PRUint32 aCaptionSide,
const nsSize& aContainBlockSize,
const nsSize& aInnerSize,
const nsMargin& aInnerMargin,
const nsSize& aCaptionSize,
nsMargin& aCaptionMargin,
nsPoint& aOrigin)
{
aOrigin.x = aOrigin.y = 0;
if ((NS_UNCONSTRAINEDSIZE == aInnerSize.width) || (NS_UNCONSTRAINEDSIZE == aInnerSize.height) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.width) || (NS_UNCONSTRAINEDSIZE == aCaptionSize.height)) {
return NS_OK;
}
if (!mCaptionFrame) return NS_OK;
switch(aCaptionSide) {
case NS_SIDE_BOTTOM: {
if (NS_AUTOMARGIN == aCaptionMargin.left) {
aCaptionMargin.left = CalcAutoMargin(aCaptionMargin.left, aCaptionMargin.right,
aContainBlockSize.width, aCaptionSize.width);
}
aOrigin.x = aCaptionMargin.left;
if (NS_AUTOMARGIN == aCaptionMargin.top) {
aCaptionMargin.top = 0;
}
nsCollapsingMargin marg;
marg.Include(aCaptionMargin.top);
marg.Include(aInnerMargin.bottom);
nscoord collapseMargin = marg.get();
if (NS_AUTOMARGIN == aCaptionMargin.bottom) {
nscoord height = aInnerSize.height + collapseMargin + aCaptionSize.height;
aCaptionMargin.bottom = CalcAutoMargin(aCaptionMargin.bottom, aInnerMargin.top,
aContainBlockSize.height, height);
}
aOrigin.y = aInnerMargin.top + aInnerSize.height + collapseMargin;
} break;
case NS_SIDE_LEFT: {
if (NS_AUTOMARGIN == aCaptionMargin.left) {
if (NS_AUTOMARGIN != aInnerMargin.left) {
aCaptionMargin.left = CalcAutoMargin(aCaptionMargin.left, aCaptionMargin.right,
aInnerMargin.left, aCaptionSize.width);
}
else {
// zero for now
aCaptionMargin.left = 0;
}
}
aOrigin.x = aCaptionMargin.left;
aOrigin.y = aInnerMargin.top;
switch(GetCaptionVerticalAlign()) {
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.y = PR_MAX(0, aInnerMargin.top + ((aInnerSize.height - aCaptionSize.height) / 2));
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
aOrigin.y = PR_MAX(0, aInnerMargin.top + aInnerSize.height - aCaptionSize.height);
break;
default:
break;
}
} break;
case NS_SIDE_RIGHT: {
if (NS_AUTOMARGIN == aCaptionMargin.left) {
if (NS_AUTOMARGIN != aInnerMargin.right) {
aCaptionMargin.left = CalcAutoMargin(aCaptionMargin.left, aCaptionMargin.right,
aInnerMargin.right, aCaptionSize.width);
}
else {
// zero for now
aCaptionMargin.left = 0;
}
}
aOrigin.x = aInnerMargin.left + aInnerSize.width + aCaptionMargin.left;
aOrigin.y = aInnerMargin.top;
switch(GetCaptionVerticalAlign()) {
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.y += PR_MAX(0, (aInnerSize.height - aCaptionSize.height) / 2);
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
aOrigin.y += PR_MAX(0, aInnerSize.height - aCaptionSize.height);
break;
default:
break;
}
} break;
default: { // top
if (NS_AUTOMARGIN == aCaptionMargin.left) {
aCaptionMargin.left = CalcAutoMargin(aCaptionMargin.left, aCaptionMargin.right,
aContainBlockSize.width, aCaptionSize.width);
}
aOrigin.x = aCaptionMargin.left;
if (NS_AUTOMARGIN == aCaptionMargin.bottom) {
aCaptionMargin.bottom = 0;
}
if (NS_AUTOMARGIN == aCaptionMargin.top) {
nsCollapsingMargin marg;
marg.Include(aCaptionMargin.bottom);
marg.Include(aInnerMargin.top);
nscoord collapseMargin = marg.get();
nscoord height = aCaptionSize.height + collapseMargin + aInnerSize.height;
aCaptionMargin.top = CalcAutoMargin(aCaptionMargin.top, aInnerMargin.bottom,
aContainBlockSize.height, height);
}
aOrigin.y = aCaptionMargin.top;
} break;
}
return NS_OK;
}
nsresult
nsTableOuterFrame::GetInnerOrigin(PRUint32 aCaptionSide,
const nsSize& aContainBlockSize,
const nsSize& aCaptionSize,
const nsMargin& aCaptionMargin,
const nsSize& aInnerSize,
nsMargin& aInnerMargin,
nsPoint& aOrigin)
{
aOrigin.x = aOrigin.y = 0;
if ((NS_UNCONSTRAINEDSIZE == aInnerSize.width) || (NS_UNCONSTRAINEDSIZE == aInnerSize.height) ||
(NS_UNCONSTRAINEDSIZE == aCaptionSize.width) || (NS_UNCONSTRAINEDSIZE == aCaptionSize.height)) {
return NS_OK;
}
nscoord minCapWidth = aCaptionSize.width;
if (NS_AUTOMARGIN != aCaptionMargin.left)
minCapWidth += aCaptionMargin.left;
if (NS_AUTOMARGIN != aCaptionMargin.right)
minCapWidth += aCaptionMargin.right;
switch(aCaptionSide) {
case NS_SIDE_BOTTOM: {
if (NS_AUTOMARGIN == aInnerMargin.left) {
aInnerMargin.left = CalcAutoMargin(aInnerMargin.left, aInnerMargin.right,
aContainBlockSize.width, aInnerSize.width);
}
aOrigin.x = aInnerMargin.left;
if (NS_AUTOMARGIN == aInnerMargin.bottom) {
aInnerMargin.bottom = 0;
}
if (NS_AUTOMARGIN == aInnerMargin.top) {
nsCollapsingMargin marg;
marg.Include(aInnerMargin.bottom);
marg.Include(aCaptionMargin.top);
nscoord collapseMargin = marg.get();
nscoord height = aInnerSize.height + collapseMargin + aCaptionSize.height;
aInnerMargin.top = CalcAutoMargin(aInnerMargin.top, aCaptionMargin.bottom,
aContainBlockSize.height, height);
}
aOrigin.y = aInnerMargin.top;
} break;
case NS_SIDE_LEFT: {
if (NS_AUTOMARGIN == aInnerMargin.left) {
aInnerMargin.left = CalcAutoMargin(aInnerMargin.left, aInnerMargin.right,
aContainBlockSize.width, aInnerSize.width);
}
if (aInnerMargin.left < minCapWidth) {
// shift the inner table to get some place for the caption
aInnerMargin.right += aInnerMargin.left - minCapWidth;
aInnerMargin.right = PR_MAX(0, aInnerMargin.right);
aInnerMargin.left = minCapWidth;
}
aOrigin.x = aInnerMargin.left;
if (NS_AUTOMARGIN == aInnerMargin.top) {
aInnerMargin.top = 0;
}
aOrigin.y = aInnerMargin.top;
switch(GetCaptionVerticalAlign()) {
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.y = PR_MAX(aInnerMargin.top, (aCaptionSize.height - aInnerSize.height) / 2);
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
aOrigin.y = PR_MAX(aInnerMargin.top, aCaptionSize.height - aInnerSize.height);
break;
default:
break;
}
} break;
case NS_SIDE_RIGHT: {
if (NS_AUTOMARGIN == aInnerMargin.right) {
aInnerMargin.right = CalcAutoMargin(aInnerMargin.left, aInnerMargin.right,
aContainBlockSize.width, aInnerSize.width);
if (aInnerMargin.right < minCapWidth) {
// shift the inner table to get some place for the caption
aInnerMargin.left -= aInnerMargin.right - minCapWidth;
aInnerMargin.left = PR_MAX(0, aInnerMargin.left);
aInnerMargin.right = minCapWidth;
}
}
aOrigin.x = aInnerMargin.left;
if (NS_AUTOMARGIN == aInnerMargin.top) {
aInnerMargin.top = 0;
}
aOrigin.y = aInnerMargin.top;
switch(GetCaptionVerticalAlign()) {
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
aOrigin.y = PR_MAX(aInnerMargin.top, (aCaptionSize.height - aInnerSize.height) / 2);
break;
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
aOrigin.y = PR_MAX(aInnerMargin.top, aCaptionSize.height - aInnerSize.height);
break;
default:
break;
}
} break;
default: { // top
if (NS_AUTOMARGIN == aInnerMargin.left) {
aInnerMargin.left = CalcAutoMargin(aInnerMargin.left, aInnerMargin.right,
aContainBlockSize.width, aInnerSize.width);
}
aOrigin.x = aInnerMargin.left;
if (NS_AUTOMARGIN == aInnerMargin.top) {
aInnerMargin.top = 0;
}
nsCollapsingMargin marg;
marg.Include(aCaptionMargin.bottom);
marg.Include(aInnerMargin.top);
nscoord collapseMargin = marg.get();
if (NS_AUTOMARGIN == aInnerMargin.bottom) {
nscoord height = aCaptionSize.height + collapseMargin + aInnerSize.height;
aInnerMargin.bottom = CalcAutoMargin(aCaptionMargin.bottom, aInnerMargin.top,
aContainBlockSize.height, height);
}
aOrigin.y = aCaptionMargin.top + aCaptionSize.height + collapseMargin;
} break;
}
return NS_OK;
}
// helper method for determining if this is a nested table or not
PRBool
nsTableOuterFrame::IsNested(const nsHTMLReflowState& aReflowState) const
{
// Walk up the reflow state chain until we find a cell or the root
const nsHTMLReflowState* rs = aReflowState.parentReflowState;
while (rs) {
if (nsGkAtoms::tableFrame == rs->frame->GetType()) {
return PR_TRUE;
}
rs = rs->parentReflowState;
}
return PR_FALSE;
}
nsresult
nsTableOuterFrame::OuterReflowChild(nsPresContext* aPresContext,
nsIFrame* aChildFrame,
const nsHTMLReflowState& aOuterRS,
void* aChildRSSpace,
nsHTMLReflowMetrics& aMetrics,
nscoord aAvailWidth,
nsSize& aDesiredSize,
nsMargin& aMargin,
nsReflowStatus& aStatus)
{
aMargin = nsMargin(0,0,0,0);
// work around pixel rounding errors, round down to ensure we don't exceed the avail height in
nscoord availHeight = aOuterRS.availableHeight;
if (NS_UNCONSTRAINEDSIZE != availHeight) {
nsMargin margin;
GetMargin(aPresContext, aOuterRS, aChildFrame, aOuterRS.availableWidth,
margin);
NS_ASSERTION(NS_UNCONSTRAINEDSIZE != margin.top, "No unconstrainedsize arithmetic, please");
availHeight -= margin.top;
NS_ASSERTION(NS_UNCONSTRAINEDSIZE != margin.bottom, "No unconstrainedsize arithmetic, please");
availHeight -= margin.bottom;
}
nsSize availSize(aAvailWidth, availHeight);
// create and init the child reflow state, using placement new on
// stack space allocated by the caller, so that the caller can destroy
// it
nsHTMLReflowState &childRS = * new (aChildRSSpace)
nsHTMLReflowState(aPresContext, aOuterRS, aChildFrame, availSize,
-1, -1, PR_FALSE);
InitChildReflowState(*aPresContext, childRS);
// see if we need to reset top of page due to a caption
if (mCaptionFrame) {
PRUint8 captionSide = GetCaptionSide();
if (((NS_SIDE_BOTTOM == captionSide) && (mCaptionFrame == aChildFrame)) ||
((NS_SIDE_TOP == captionSide) && (mInnerTableFrame == aChildFrame))) {
childRS.mFlags.mIsTopOfPage = PR_FALSE;
}
if ((mCaptionFrame == aChildFrame) && (NS_SIDE_LEFT != captionSide)
&& (NS_SIDE_RIGHT != captionSide)) {
aAvailWidth = aOuterRS.availableWidth;
}
}
// use the current position as a best guess for placement
nsPoint childPt = aChildFrame->GetPosition();
nsresult rv = ReflowChild(aChildFrame, aPresContext, aMetrics, childRS,
childPt.x, childPt.y, NS_FRAME_NO_MOVE_FRAME, aStatus);
if (NS_FAILED(rv)) return rv;
aMargin = childRS.mComputedMargin;
aDesiredSize.width = aMetrics.width;
aDesiredSize.height = aMetrics.height;
return rv;
}
void
nsTableOuterFrame::UpdateReflowMetrics(PRUint8 aCaptionSide,
nsHTMLReflowMetrics& aMet,
const nsMargin& aInnerMargin,
const nsMargin& aCaptionMargin)
{
SetDesiredSize(aCaptionSide, aInnerMargin, aCaptionMargin,
aMet.width, aMet.height);
aMet.mOverflowArea = nsRect(0, 0, aMet.width, aMet.height);
ConsiderChildOverflow(aMet.mOverflowArea, mInnerTableFrame);
if (mCaptionFrame) {
ConsiderChildOverflow(aMet.mOverflowArea, mCaptionFrame);
}
FinishAndStoreOverflow(&aMet);
}
NS_METHOD nsTableOuterFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aOuterRS,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsTableOuterFrame");
DISPLAY_REFLOW(aPresContext, this, aOuterRS, aDesiredSize, aStatus);
// We desperately need an inner table frame,
// if this fails fix the frame constructor
if (mFrames.IsEmpty() || !mInnerTableFrame) {
NS_ERROR("incomplete children");
return NS_ERROR_FAILURE;
}
nsresult rv = NS_OK;
PRUint8 captionSide = GetCaptionSide();
// Initialize out parameters
aDesiredSize.width = aDesiredSize.height = 0;
aStatus = NS_FRAME_COMPLETE;
PRBool reflowAllKids = aOuterRS.ShouldReflowAllKids();
if (captionSide == NS_SIDE_LEFT || captionSide == NS_SIDE_RIGHT)
reflowAllKids = PR_TRUE;
if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
// Set up our kids. They're already present, on an overflow list,
// or there are none so we'll create them now
MoveOverflowToChildList(aPresContext);
}
PRBool reflowCaption =
mCaptionFrame && (reflowAllKids || NS_SUBTREE_DIRTY(mCaptionFrame));
PRBool reflowInner = reflowAllKids || NS_SUBTREE_DIRTY(mInnerTableFrame);
// First reflow the caption. nsHTMLReflowState takes care of making
// side captions small.
nsHTMLReflowMetrics captionMet;
nsSize captionSize;
nsMargin captionMargin;
// Use longs to get more-aligned space.
#define LONGS_IN_HTMLRS \
((sizeof(nsHTMLReflowState) + sizeof(long) - 1) / sizeof(long))
long captionRSSpace[LONGS_IN_HTMLRS];
if (reflowCaption) {
nsReflowStatus capStatus; // don't let the caption cause incomplete
rv = OuterReflowChild(aPresContext, mCaptionFrame, aOuterRS,
captionRSSpace, captionMet,
aOuterRS.ComputedWidth(), captionSize,
captionMargin, capStatus);
if (NS_FAILED(rv)) return rv;
} else if (mCaptionFrame) {
captionSize = mCaptionFrame->GetSize();
GetMargin(aPresContext, aOuterRS, mCaptionFrame, aOuterRS.ComputedWidth(),
captionMargin);
} else {
captionSize.SizeTo(0,0);
captionMargin.SizeTo(0,0,0,0);
}
nscoord innerAvailWidth = aOuterRS.ComputedWidth();
if (captionSide == NS_SIDE_LEFT || captionSide == NS_SIDE_RIGHT)
// If side is left/right then we know we have a caption and we
// reflowed it.
innerAvailWidth -= captionMet.width + captionMargin.LeftRight();
// Then, now that we know how much to reduce the width of the inner
// table to account for side captions, reflow the inner table.
nsHTMLReflowMetrics innerMet;
nsSize innerSize;
nsMargin innerMargin;
long innerRSSpace[LONGS_IN_HTMLRS];
if (reflowInner) {
rv = OuterReflowChild(aPresContext, mInnerTableFrame, aOuterRS,
innerRSSpace, innerMet, innerAvailWidth,
innerSize, innerMargin, aStatus);
if (NS_FAILED(rv)) return rv;
} else {
innerSize = mInnerTableFrame->GetSize();
GetMargin(aPresContext, aOuterRS, mInnerTableFrame,
aOuterRS.ComputedWidth(), innerMargin);
}
nsSize containSize = GetContainingBlockSize(aOuterRS);
// Now that we've reflowed both we can place them.
// XXXldb Most of the input variables here are now uninitialized!
// XXX Need to recompute inner table's auto margins for the case of side
// captions. (Caption's are broken too, but that should be fixed earlier.)
if (mCaptionFrame) {
nsPoint captionOrigin;
GetCaptionOrigin(captionSide, containSize, innerSize,
innerMargin, captionSize, captionMargin, captionOrigin);
if (reflowCaption) {
nsHTMLReflowState *captionRS =
NS_STATIC_CAST(nsHTMLReflowState*, (void*)captionRSSpace);
FinishReflowChild(mCaptionFrame, aPresContext, captionRS, captionMet,
captionOrigin.x, captionOrigin.y, 0);
captionRS->~nsHTMLReflowState();
} else {
mCaptionFrame->SetPosition(captionOrigin);
nsTableFrame::RePositionViews(mCaptionFrame);
}
}
// XXX If the height is constrained then we need to check whether
// everything still fits...
nsPoint innerOrigin;
GetInnerOrigin(captionSide, containSize, captionSize,
captionMargin, innerSize, innerMargin, innerOrigin);
if (reflowInner) {
nsHTMLReflowState *innerRS =
NS_STATIC_CAST(nsHTMLReflowState*, (void*) innerRSSpace);
FinishReflowChild(mInnerTableFrame, aPresContext, innerRS, innerMet,
innerOrigin.x, innerOrigin.y, 0);
innerRS->~nsHTMLReflowState();
} else {
mInnerTableFrame->SetPosition(innerOrigin);
nsTableFrame::RePositionViews(mInnerTableFrame);
}
UpdateReflowMetrics(captionSide, aDesiredSize, innerMargin, captionMargin);
// Return our desired rect
NS_FRAME_SET_TRUNCATION(aStatus, aOuterRS, aDesiredSize);
return rv;
}
#ifdef NS_DEBUG
NS_METHOD nsTableOuterFrame::VerifyTree() const
{
return NS_OK;
}
#endif
/**
* Remove and delete aChild's next-in-flow(s). Updates the sibling and flow
* pointers.
*
* Updates the child count and content offsets of all containers that are
* affected
*
* Overloaded here because nsContainerFrame makes assumptions about pseudo-frames
* that are not true for tables.
*
* @param aChild child this child's next-in-flow
* @return PR_TRUE if successful and PR_FALSE otherwise
*/
void nsTableOuterFrame::DeleteChildsNextInFlow(nsPresContext* aPresContext,
nsIFrame* aChild)
{
if (!aChild) return;
NS_PRECONDITION(mFrames.ContainsFrame(aChild), "bad geometric parent");
nsIFrame* nextInFlow = aChild->GetNextInFlow();
if (!nextInFlow) {
NS_ASSERTION(PR_FALSE, "null next-in-flow");
return;
}
nsTableOuterFrame* parent = NS_STATIC_CAST(nsTableOuterFrame*,
nextInFlow->GetParent());
if (!parent) {
NS_ASSERTION(PR_FALSE, "null parent");
return;
}
// If the next-in-flow has a next-in-flow then delete it too (and
// delete it first).
nsIFrame* nextNextInFlow = nextInFlow->GetNextInFlow();
if (nextNextInFlow) {
parent->DeleteChildsNextInFlow(aPresContext, nextInFlow);
}
// Disconnect the next-in-flow from the flow list
nsSplittableFrame::BreakFromPrevFlow(nextInFlow);
// Take the next-in-flow out of the parent's child list
if (parent->mFrames.FirstChild() == nextInFlow) {
parent->mFrames.SetFrames(nextInFlow->GetNextSibling());
} else {
// Because the next-in-flow is not the first child of the parent
// we know that it shares a parent with aChild. Therefore, we need
// to capture the next-in-flow's next sibling (in case the
// next-in-flow is the last next-in-flow for aChild AND the
// next-in-flow is not the last child in parent)
NS_ASSERTION(aChild->GetNextSibling() == nextInFlow, "unexpected sibling");
aChild->SetNextSibling(nextInFlow->GetNextSibling());
}
// Delete the next-in-flow frame and adjust its parent's child count
nextInFlow->Destroy();
NS_POSTCONDITION(!aChild->GetNextInFlow(), "non null next-in-flow");
}
nsIAtom*
nsTableOuterFrame::GetType() const
{
return nsGkAtoms::tableOuterFrame;
}
/* ----- global methods ----- */
/*------------------ nsITableLayout methods ------------------------------*/
NS_IMETHODIMP
nsTableOuterFrame::GetCellDataAt(PRInt32 aRowIndex, PRInt32 aColIndex,
nsIDOMElement* &aCell, //out params
PRInt32& aStartRowIndex, PRInt32& aStartColIndex,
PRInt32& aRowSpan, PRInt32& aColSpan,
PRInt32& aActualRowSpan, PRInt32& aActualColSpan,
PRBool& aIsSelected)
{
if (!mInnerTableFrame) { return NS_ERROR_NOT_INITIALIZED; }
nsITableLayout *inner;
if (NS_SUCCEEDED(CallQueryInterface(mInnerTableFrame, &inner))) {
return (inner->GetCellDataAt(aRowIndex, aColIndex, aCell,
aStartRowIndex, aStartColIndex,
aRowSpan, aColSpan, aActualRowSpan, aActualColSpan,
aIsSelected));
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP nsTableOuterFrame::GetTableSize(PRInt32& aRowCount, PRInt32& aColCount)
{
if (!mInnerTableFrame) { return NS_ERROR_NOT_INITIALIZED; }
nsITableLayout *inner;
if (NS_SUCCEEDED(CallQueryInterface(mInnerTableFrame, &inner))) {
return (inner->GetTableSize(aRowCount, aColCount));
}
return NS_ERROR_NULL_POINTER;
}
/*---------------- end of nsITableLayout implementation ------------------*/
nsIFrame*
NS_NewTableOuterFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsTableOuterFrame(aContext);
}
#ifdef DEBUG
NS_IMETHODIMP
nsTableOuterFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("TableOuter"), aResult);
}
#endif
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