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gecko/layout/tables/nsTableOuterFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* 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)
{
NS_PRECONDITION(mContent->GetParent(),
"How could we not have a parent here?");
// 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 ACCESSIBILITY
NS_IMETHODIMP nsTableCaptionFrame::GetAccessible(nsIAccessible** aAccessible)
{
*aAccessible = nsnull;
if (!GetRect().IsEmpty()) {
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
return accService->CreateHTMLCaptionAccessible(static_cast<nsIFrame*>(this), aAccessible);
}
}
return NS_ERROR_FAILURE;
}
#endif
#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()
{
}
NS_IMETHODIMP
nsTableOuterFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(aInstancePtr, "null out param");
if (aIID.Equals(NS_GET_IID(nsITableLayout))) {
*aInstancePtr = static_cast<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(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 =
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 =
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 = 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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