зеркало из https://github.com/mozilla/gecko-dev.git
2280 строки
84 KiB
C++
2280 строки
84 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* base class #1 for rendering objects that have child lists */
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#include "nsContainerFrame.h"
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#include "mozilla/ComputedStyle.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/dom/HTMLSummaryElement.h"
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#include "nsAbsoluteContainingBlock.h"
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#include "nsAttrValue.h"
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#include "nsAttrValueInlines.h"
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#include "nsFlexContainerFrame.h"
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#include "mozilla/dom/Document.h"
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#include "nsPresContext.h"
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#include "nsRect.h"
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#include "nsPoint.h"
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#include "nsStyleConsts.h"
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#include "nsView.h"
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#include "nsCOMPtr.h"
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#include "nsGkAtoms.h"
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#include "nsViewManager.h"
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#include "nsIWidget.h"
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#include "nsCSSRendering.h"
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#include "nsError.h"
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#include "nsDisplayList.h"
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#include "nsIBaseWindow.h"
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#include "nsBoxLayoutState.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsBlockFrame.h"
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#include "nsBulletFrame.h"
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#include "nsPlaceholderFrame.h"
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#include "mozilla/AutoRestore.h"
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#include "nsIFrameInlines.h"
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#include "nsPrintfCString.h"
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#include <algorithm>
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::layout;
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nsContainerFrame::~nsContainerFrame() = default;
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NS_QUERYFRAME_HEAD(nsContainerFrame)
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NS_QUERYFRAME_ENTRY(nsContainerFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsSplittableFrame)
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void nsContainerFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) {
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nsSplittableFrame::Init(aContent, aParent, aPrevInFlow);
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if (aPrevInFlow) {
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// Make sure we copy bits from our prev-in-flow that will affect
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// us. A continuation for a container frame needs to know if it
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// has a child with a view so that we'll properly reposition it.
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if (aPrevInFlow->GetStateBits() & NS_FRAME_HAS_CHILD_WITH_VIEW)
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AddStateBits(NS_FRAME_HAS_CHILD_WITH_VIEW);
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}
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}
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void nsContainerFrame::SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList) {
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#ifdef DEBUG
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nsFrame::VerifyDirtyBitSet(aChildList);
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for (nsIFrame* f : aChildList) {
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MOZ_ASSERT(f->GetParent() == this, "Unexpected parent");
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}
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#endif
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if (aListID == kPrincipalList) {
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MOZ_ASSERT(mFrames.IsEmpty(),
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"unexpected second call to SetInitialChildList");
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mFrames.SetFrames(aChildList);
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} else if (aListID == kBackdropList) {
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MOZ_ASSERT(StyleDisplay()->mTopLayer != StyleTopLayer::None,
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"Only top layer frames should have backdrop");
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MOZ_ASSERT(GetStateBits() & NS_FRAME_OUT_OF_FLOW,
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"Top layer frames should be out-of-flow");
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MOZ_ASSERT(!GetProperty(BackdropProperty()),
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"We shouldn't have setup backdrop frame list before");
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#ifdef DEBUG
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{
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nsIFrame* placeholder = aChildList.FirstChild();
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MOZ_ASSERT(aChildList.OnlyChild(), "Should have only one backdrop");
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MOZ_ASSERT(placeholder->IsPlaceholderFrame(),
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"The frame to be stored should be a placeholder");
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MOZ_ASSERT(static_cast<nsPlaceholderFrame*>(placeholder)
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->GetOutOfFlowFrame()
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->IsBackdropFrame(),
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"The placeholder should points to a backdrop frame");
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}
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#endif
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nsFrameList* list = new (PresShell()) nsFrameList(aChildList);
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SetProperty(BackdropProperty(), list);
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} else {
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MOZ_ASSERT_UNREACHABLE("Unexpected child list");
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}
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}
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void nsContainerFrame::AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList) {
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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if (MOZ_UNLIKELY(aFrameList.IsEmpty())) {
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return;
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}
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DrainSelfOverflowList(); // ensure the last frame is in mFrames
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mFrames.AppendFrames(this, aFrameList);
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if (aListID != kNoReflowPrincipalList) {
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PresShell()->FrameNeedsReflow(this, IntrinsicDirty::TreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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}
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void nsContainerFrame::InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
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const nsLineList::iterator* aPrevFrameLine,
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nsFrameList& aFrameList) {
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this,
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"inserting after sibling frame with different parent");
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if (MOZ_UNLIKELY(aFrameList.IsEmpty())) {
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return;
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}
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DrainSelfOverflowList(); // ensure aPrevFrame is in mFrames
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mFrames.InsertFrames(this, aPrevFrame, aFrameList);
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if (aListID != kNoReflowPrincipalList) {
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PresShell()->FrameNeedsReflow(this, IntrinsicDirty::TreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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}
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void nsContainerFrame::RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) {
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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AutoTArray<nsIFrame*, 10> continuations;
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{
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nsIFrame* continuation = aOldFrame;
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while (continuation) {
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continuations.AppendElement(continuation);
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continuation = continuation->GetNextContinuation();
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}
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}
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mozilla::PresShell* presShell = PresShell();
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nsContainerFrame* lastParent = nullptr;
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// Loop and destroy aOldFrame and all of its continuations.
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//
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// Request a reflow on the parent frames involved unless we were explicitly
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// told not to (kNoReflowPrincipalList).
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const bool generateReflowCommand = (kNoReflowPrincipalList != aListID);
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for (nsIFrame* continuation : Reversed(continuations)) {
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nsContainerFrame* parent = continuation->GetParent();
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// Please note that 'parent' may not actually be where 'continuation' lives.
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// We really MUST use StealFrame() and nothing else here.
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// @see nsInlineFrame::StealFrame for details.
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parent->StealFrame(continuation);
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continuation->Destroy();
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if (generateReflowCommand && parent != lastParent) {
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presShell->FrameNeedsReflow(parent, IntrinsicDirty::TreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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lastParent = parent;
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}
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}
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}
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void nsContainerFrame::DestroyAbsoluteFrames(
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nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData) {
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if (IsAbsoluteContainer()) {
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GetAbsoluteContainingBlock()->DestroyFrames(this, aDestructRoot,
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aPostDestroyData);
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MarkAsNotAbsoluteContainingBlock();
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}
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}
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void nsContainerFrame::SafelyDestroyFrameListProp(
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nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData,
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mozilla::PresShell* aPresShell, FrameListPropertyDescriptor aProp) {
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// Note that the last frame can be removed through another route and thus
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// delete the property -- that's why we fetch the property again before
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// removing each frame rather than fetching it once and iterating the list.
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while (nsFrameList* frameList = GetProperty(aProp)) {
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nsIFrame* frame = frameList->RemoveFirstChild();
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if (MOZ_LIKELY(frame)) {
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frame->DestroyFrom(aDestructRoot, aPostDestroyData);
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} else {
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Unused << TakeProperty(aProp);
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frameList->Delete(aPresShell);
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return;
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}
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}
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}
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void nsContainerFrame::DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) {
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// Prevent event dispatch during destruction.
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if (HasView()) {
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GetView()->SetFrame(nullptr);
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}
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DestroyAbsoluteFrames(aDestructRoot, aPostDestroyData);
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// Destroy frames on the principal child list.
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mFrames.DestroyFramesFrom(aDestructRoot, aPostDestroyData);
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// If we have any IB split siblings, clear their references to us.
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if (HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)) {
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// Delete previous sibling's reference to me.
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if (nsIFrame* prevSib = GetProperty(nsIFrame::IBSplitPrevSibling())) {
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NS_WARNING_ASSERTION(
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this == prevSib->GetProperty(nsIFrame::IBSplitSibling()),
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"IB sibling chain is inconsistent");
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prevSib->RemoveProperty(nsIFrame::IBSplitSibling());
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}
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// Delete next sibling's reference to me.
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if (nsIFrame* nextSib = GetProperty(nsIFrame::IBSplitSibling())) {
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NS_WARNING_ASSERTION(
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this == nextSib->GetProperty(nsIFrame::IBSplitPrevSibling()),
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"IB sibling chain is inconsistent");
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nextSib->RemoveProperty(nsIFrame::IBSplitPrevSibling());
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}
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#ifdef DEBUG
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// This is just so we can assert it's not set in nsFrame::DestroyFrom.
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RemoveStateBits(NS_FRAME_PART_OF_IBSPLIT);
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#endif
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}
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if (MOZ_UNLIKELY(!mProperties.IsEmpty())) {
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using T = mozilla::FrameProperties::UntypedDescriptor;
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bool hasO = false, hasOC = false, hasEOC = false, hasBackdrop = false;
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mProperties.ForEach([&](const T& aProp, void*) {
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if (aProp == OverflowProperty()) {
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hasO = true;
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} else if (aProp == OverflowContainersProperty()) {
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hasOC = true;
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} else if (aProp == ExcessOverflowContainersProperty()) {
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hasEOC = true;
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} else if (aProp == BackdropProperty()) {
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hasBackdrop = true;
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}
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return true;
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});
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// Destroy frames on the auxiliary frame lists and delete the lists.
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nsPresContext* pc = PresContext();
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mozilla::PresShell* presShell = pc->PresShell();
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if (hasO) {
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SafelyDestroyFrameListProp(aDestructRoot, aPostDestroyData, presShell,
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OverflowProperty());
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}
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MOZ_ASSERT(
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IsFrameOfType(eCanContainOverflowContainers) || !(hasOC || hasEOC),
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"this type of frame shouldn't have overflow containers");
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if (hasOC) {
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SafelyDestroyFrameListProp(aDestructRoot, aPostDestroyData, presShell,
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OverflowContainersProperty());
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}
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if (hasEOC) {
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SafelyDestroyFrameListProp(aDestructRoot, aPostDestroyData, presShell,
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ExcessOverflowContainersProperty());
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}
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MOZ_ASSERT(!GetProperty(BackdropProperty()) ||
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StyleDisplay()->mTopLayer != StyleTopLayer::None,
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"only top layer frame may have backdrop");
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if (hasBackdrop) {
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SafelyDestroyFrameListProp(aDestructRoot, aPostDestroyData, presShell,
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BackdropProperty());
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}
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}
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nsSplittableFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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/////////////////////////////////////////////////////////////////////////////
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// Child frame enumeration
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const nsFrameList& nsContainerFrame::GetChildList(ChildListID aListID) const {
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// We only know about the principal child list, the overflow lists,
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// and the backdrop list.
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switch (aListID) {
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case kPrincipalList:
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return mFrames;
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case kOverflowList: {
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nsFrameList* list = GetOverflowFrames();
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return list ? *list : nsFrameList::EmptyList();
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}
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case kOverflowContainersList: {
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nsFrameList* list = GetPropTableFrames(OverflowContainersProperty());
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return list ? *list : nsFrameList::EmptyList();
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}
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case kExcessOverflowContainersList: {
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nsFrameList* list =
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GetPropTableFrames(ExcessOverflowContainersProperty());
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return list ? *list : nsFrameList::EmptyList();
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}
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case kBackdropList: {
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nsFrameList* list = GetPropTableFrames(BackdropProperty());
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return list ? *list : nsFrameList::EmptyList();
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}
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default:
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return nsSplittableFrame::GetChildList(aListID);
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}
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}
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void nsContainerFrame::GetChildLists(nsTArray<ChildList>* aLists) const {
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mFrames.AppendIfNonempty(aLists, kPrincipalList);
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using T = mozilla::FrameProperties::UntypedDescriptor;
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mProperties.ForEach([this, aLists](const T& aProp, void* aValue) {
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typedef const nsFrameList* L;
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if (aProp == OverflowProperty()) {
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L(aValue)->AppendIfNonempty(aLists, kOverflowList);
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} else if (aProp == OverflowContainersProperty()) {
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MOZ_ASSERT(IsFrameOfType(nsIFrame::eCanContainOverflowContainers),
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"found unexpected OverflowContainersProperty");
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Unused << this; // silence clang -Wunused-lambda-capture in opt builds
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L(aValue)->AppendIfNonempty(aLists, kOverflowContainersList);
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} else if (aProp == ExcessOverflowContainersProperty()) {
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MOZ_ASSERT(IsFrameOfType(nsIFrame::eCanContainOverflowContainers),
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"found unexpected ExcessOverflowContainersProperty");
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Unused << this; // silence clang -Wunused-lambda-capture in opt builds
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L(aValue)->AppendIfNonempty(aLists, kExcessOverflowContainersList);
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} else if (aProp == BackdropProperty()) {
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L(aValue)->AppendIfNonempty(aLists, kBackdropList);
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}
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return true;
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});
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nsSplittableFrame::GetChildLists(aLists);
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}
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/////////////////////////////////////////////////////////////////////////////
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// Painting/Events
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void nsContainerFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) {
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DisplayBorderBackgroundOutline(aBuilder, aLists);
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BuildDisplayListForNonBlockChildren(aBuilder, aLists);
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}
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void nsContainerFrame::BuildDisplayListForNonBlockChildren(
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nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists,
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uint32_t aFlags) {
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nsIFrame* kid = mFrames.FirstChild();
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// Put each child's background directly onto the content list
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nsDisplayListSet set(aLists, aLists.Content());
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// The children should be in content order
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while (kid) {
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BuildDisplayListForChild(aBuilder, kid, set, aFlags);
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kid = kid->GetNextSibling();
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}
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}
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/* virtual */
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void nsContainerFrame::ChildIsDirty(nsIFrame* aChild) {
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NS_ASSERTION(NS_SUBTREE_DIRTY(aChild), "child isn't actually dirty");
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AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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nsIFrame::FrameSearchResult nsContainerFrame::PeekOffsetNoAmount(
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bool aForward, int32_t* aOffset) {
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NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range");
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// Don't allow the caret to stay in an empty (leaf) container frame.
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return CONTINUE_EMPTY;
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}
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nsIFrame::FrameSearchResult nsContainerFrame::PeekOffsetCharacter(
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bool aForward, int32_t* aOffset, PeekOffsetCharacterOptions aOptions) {
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NS_ASSERTION(aOffset && *aOffset <= 1, "aOffset out of range");
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// Don't allow the caret to stay in an empty (leaf) container frame.
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return CONTINUE_EMPTY;
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}
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/////////////////////////////////////////////////////////////////////////////
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// Helper member functions
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/**
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* Position the view associated with |aKidFrame|, if there is one. A
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* container frame should call this method after positioning a frame,
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* but before |Reflow|.
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*/
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void nsContainerFrame::PositionFrameView(nsIFrame* aKidFrame) {
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nsIFrame* parentFrame = aKidFrame->GetParent();
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if (!aKidFrame->HasView() || !parentFrame) return;
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nsView* view = aKidFrame->GetView();
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nsViewManager* vm = view->GetViewManager();
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nsPoint pt;
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nsView* ancestorView = parentFrame->GetClosestView(&pt);
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if (ancestorView != view->GetParent()) {
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NS_ASSERTION(ancestorView == view->GetParent()->GetParent(),
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"Allowed only one anonymous view between frames");
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// parentFrame is responsible for positioning aKidFrame's view
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// explicitly
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return;
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}
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pt += aKidFrame->GetPosition();
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vm->MoveViewTo(view, pt.x, pt.y);
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}
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nsresult nsContainerFrame::ReparentFrameView(nsIFrame* aChildFrame,
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nsIFrame* aOldParentFrame,
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nsIFrame* aNewParentFrame) {
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MOZ_ASSERT(aChildFrame, "null child frame pointer");
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MOZ_ASSERT(aOldParentFrame, "null old parent frame pointer");
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MOZ_ASSERT(aNewParentFrame, "null new parent frame pointer");
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MOZ_ASSERT(aOldParentFrame != aNewParentFrame,
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"same old and new parent frame");
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// See if either the old parent frame or the new parent frame have a view
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while (!aOldParentFrame->HasView() && !aNewParentFrame->HasView()) {
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// Walk up both the old parent frame and the new parent frame nodes
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// stopping when we either find a common parent or views for one
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// or both of the frames.
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//
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// This works well in the common case where we push/pull and the old parent
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// frame and the new parent frame are part of the same flow. They will
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// typically be the same distance (height wise) from the
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aOldParentFrame = aOldParentFrame->GetParent();
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aNewParentFrame = aNewParentFrame->GetParent();
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// We should never walk all the way to the root frame without finding
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// a view
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NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
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// See if we reached a common ancestor
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if (aOldParentFrame == aNewParentFrame) {
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break;
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}
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}
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// See if we found a common parent frame
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if (aOldParentFrame == aNewParentFrame) {
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// We found a common parent and there are no views between the old parent
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// and the common parent or the new parent frame and the common parent.
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// Because neither the old parent frame nor the new parent frame have views,
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// then any child views don't need reparenting
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return NS_OK;
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}
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// We found views for one or both of the ancestor frames before we
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// found a common ancestor.
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nsView* oldParentView = aOldParentFrame->GetClosestView();
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nsView* newParentView = aNewParentFrame->GetClosestView();
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// See if the old parent frame and the new parent frame are in the
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// same view sub-hierarchy. If they are then we don't have to do
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// anything
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if (oldParentView != newParentView) {
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// They're not so we need to reparent any child views
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aChildFrame->ReparentFrameViewTo(oldParentView->GetViewManager(),
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newParentView, oldParentView);
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}
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return NS_OK;
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}
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|
|
void nsContainerFrame::ReparentFrameViewList(const nsFrameList& aChildFrameList,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame) {
|
|
MOZ_ASSERT(aChildFrameList.NotEmpty(), "empty child frame list");
|
|
MOZ_ASSERT(aOldParentFrame, "null old parent frame pointer");
|
|
MOZ_ASSERT(aNewParentFrame, "null new parent frame pointer");
|
|
MOZ_ASSERT(aOldParentFrame != aNewParentFrame,
|
|
"same old and new parent frame");
|
|
|
|
// See if either the old parent frame or the new parent frame have a view
|
|
while (!aOldParentFrame->HasView() && !aNewParentFrame->HasView()) {
|
|
// Walk up both the old parent frame and the new parent frame nodes
|
|
// stopping when we either find a common parent or views for one
|
|
// or both of the frames.
|
|
//
|
|
// This works well in the common case where we push/pull and the old parent
|
|
// frame and the new parent frame are part of the same flow. They will
|
|
// typically be the same distance (height wise) from the
|
|
aOldParentFrame = aOldParentFrame->GetParent();
|
|
aNewParentFrame = aNewParentFrame->GetParent();
|
|
|
|
// We should never walk all the way to the root frame without finding
|
|
// a view
|
|
NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
|
|
|
|
// See if we reached a common ancestor
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// See if we found a common parent frame
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
// We found a common parent and there are no views between the old parent
|
|
// and the common parent or the new parent frame and the common parent.
|
|
// Because neither the old parent frame nor the new parent frame have views,
|
|
// then any child views don't need reparenting
|
|
return;
|
|
}
|
|
|
|
// We found views for one or both of the ancestor frames before we
|
|
// found a common ancestor.
|
|
nsView* oldParentView = aOldParentFrame->GetClosestView();
|
|
nsView* newParentView = aNewParentFrame->GetClosestView();
|
|
|
|
// See if the old parent frame and the new parent frame are in the
|
|
// same view sub-hierarchy. If they are then we don't have to do
|
|
// anything
|
|
if (oldParentView != newParentView) {
|
|
nsViewManager* viewManager = oldParentView->GetViewManager();
|
|
|
|
// They're not so we need to reparent any child views
|
|
for (nsFrameList::Enumerator e(aChildFrameList); !e.AtEnd(); e.Next()) {
|
|
e.get()->ReparentFrameViewTo(viewManager, newParentView, oldParentView);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsContainerFrame::ReparentFrame(nsIFrame* aFrame,
|
|
nsContainerFrame* aOldParent,
|
|
nsContainerFrame* aNewParent) {
|
|
NS_ASSERTION(aOldParent == aFrame->GetParent(),
|
|
"Parent not consistent with expectations");
|
|
|
|
aFrame->SetParent(aNewParent);
|
|
|
|
// When pushing and pulling frames we need to check for whether any
|
|
// views need to be reparented
|
|
ReparentFrameView(aFrame, aOldParent, aNewParent);
|
|
}
|
|
|
|
void nsContainerFrame::ReparentFrames(nsFrameList& aFrameList,
|
|
nsContainerFrame* aOldParent,
|
|
nsContainerFrame* aNewParent) {
|
|
for (auto* f : aFrameList) {
|
|
ReparentFrame(f, aOldParent, aNewParent);
|
|
}
|
|
}
|
|
|
|
static nsIWidget* GetPresContextContainerWidget(nsPresContext* aPresContext) {
|
|
nsCOMPtr<nsISupports> container = aPresContext->Document()->GetContainer();
|
|
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(container);
|
|
if (!baseWindow) return nullptr;
|
|
|
|
nsCOMPtr<nsIWidget> mainWidget;
|
|
baseWindow->GetMainWidget(getter_AddRefs(mainWidget));
|
|
return mainWidget;
|
|
}
|
|
|
|
static bool IsTopLevelWidget(nsIWidget* aWidget) {
|
|
nsWindowType windowType = aWidget->WindowType();
|
|
return windowType == eWindowType_toplevel ||
|
|
windowType == eWindowType_dialog || windowType == eWindowType_popup ||
|
|
windowType == eWindowType_sheet;
|
|
}
|
|
|
|
void nsContainerFrame::SyncWindowProperties(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame, nsView* aView,
|
|
gfxContext* aRC, uint32_t aFlags) {
|
|
#ifdef MOZ_XUL
|
|
if (!aView || !nsCSSRendering::IsCanvasFrame(aFrame) || !aView->HasWidget())
|
|
return;
|
|
|
|
nsCOMPtr<nsIWidget> windowWidget =
|
|
GetPresContextContainerWidget(aPresContext);
|
|
if (!windowWidget || !IsTopLevelWidget(windowWidget)) return;
|
|
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
nsView* rootView = vm->GetRootView();
|
|
|
|
if (aView != rootView) return;
|
|
|
|
Element* rootElement = aPresContext->Document()->GetRootElement();
|
|
if (!rootElement) {
|
|
return;
|
|
}
|
|
|
|
nsIFrame* rootFrame =
|
|
aPresContext->PresShell()->FrameConstructor()->GetRootElementStyleFrame();
|
|
if (!rootFrame) return;
|
|
|
|
if (aFlags & SET_ASYNC) {
|
|
aView->SetNeedsWindowPropertiesSync();
|
|
return;
|
|
}
|
|
|
|
RefPtr<nsPresContext> kungFuDeathGrip(aPresContext);
|
|
AutoWeakFrame weak(rootFrame);
|
|
|
|
if (!aPresContext->PresShell()->GetRootScrollFrame()) {
|
|
// Scrollframes use native widgets which don't work well with
|
|
// translucent windows, at least in Windows XP. So if the document
|
|
// has a root scrollrame it's useless to try to make it transparent,
|
|
// we'll just get something broken.
|
|
// We can change this to allow translucent toplevel HTML documents
|
|
// (e.g. to do something like Dashboard widgets), once we
|
|
// have broad support for translucent scrolled documents, but be
|
|
// careful because apparently some Firefox extensions expect
|
|
// openDialog("something.html") to produce an opaque window
|
|
// even if the HTML doesn't have a background-color set.
|
|
nsTransparencyMode mode =
|
|
nsLayoutUtils::GetFrameTransparency(aFrame, rootFrame);
|
|
StyleWindowShadow shadow = rootFrame->StyleUIReset()->mWindowShadow;
|
|
nsCOMPtr<nsIWidget> viewWidget = aView->GetWidget();
|
|
viewWidget->SetTransparencyMode(mode);
|
|
windowWidget->SetWindowShadowStyle(shadow);
|
|
}
|
|
|
|
if (!aRC) return;
|
|
|
|
if (!weak.IsAlive()) {
|
|
return;
|
|
}
|
|
|
|
nsSize minSize(0, 0);
|
|
nsSize maxSize(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
|
|
if (rootElement->IsXULElement()) {
|
|
nsBoxLayoutState aState(aPresContext, aRC);
|
|
minSize = rootFrame->GetXULMinSize(aState);
|
|
maxSize = rootFrame->GetXULMaxSize(aState);
|
|
} else {
|
|
auto* pos = rootFrame->StylePosition();
|
|
if (pos->mMinWidth.ConvertsToLength()) {
|
|
minSize.width = pos->mMinWidth.ToLength();
|
|
}
|
|
if (pos->mMinHeight.ConvertsToLength()) {
|
|
minSize.height = pos->mMinHeight.ToLength();
|
|
}
|
|
if (pos->mMaxWidth.ConvertsToLength()) {
|
|
maxSize.width = pos->mMaxWidth.ToLength();
|
|
}
|
|
if (pos->mMaxHeight.ConvertsToLength()) {
|
|
maxSize.height = pos->mMaxHeight.ToLength();
|
|
}
|
|
}
|
|
SetSizeConstraints(aPresContext, windowWidget, minSize, maxSize);
|
|
#endif
|
|
}
|
|
|
|
void nsContainerFrame::SetSizeConstraints(nsPresContext* aPresContext,
|
|
nsIWidget* aWidget,
|
|
const nsSize& aMinSize,
|
|
const nsSize& aMaxSize) {
|
|
LayoutDeviceIntSize devMinSize(
|
|
aPresContext->AppUnitsToDevPixels(aMinSize.width),
|
|
aPresContext->AppUnitsToDevPixels(aMinSize.height));
|
|
LayoutDeviceIntSize devMaxSize(
|
|
aMaxSize.width == NS_UNCONSTRAINEDSIZE
|
|
? NS_MAXSIZE
|
|
: aPresContext->AppUnitsToDevPixels(aMaxSize.width),
|
|
aMaxSize.height == NS_UNCONSTRAINEDSIZE
|
|
? NS_MAXSIZE
|
|
: aPresContext->AppUnitsToDevPixels(aMaxSize.height));
|
|
|
|
// MinSize has a priority over MaxSize
|
|
if (devMinSize.width > devMaxSize.width) devMaxSize.width = devMinSize.width;
|
|
if (devMinSize.height > devMaxSize.height)
|
|
devMaxSize.height = devMinSize.height;
|
|
|
|
widget::SizeConstraints constraints(devMinSize, devMaxSize);
|
|
|
|
// The sizes are in inner window sizes, so convert them into outer window
|
|
// sizes. Use a size of (200, 200) as only the difference between the inner
|
|
// and outer size is needed.
|
|
LayoutDeviceIntSize windowSize =
|
|
aWidget->ClientToWindowSize(LayoutDeviceIntSize(200, 200));
|
|
if (constraints.mMinSize.width)
|
|
constraints.mMinSize.width += windowSize.width - 200;
|
|
if (constraints.mMinSize.height)
|
|
constraints.mMinSize.height += windowSize.height - 200;
|
|
if (constraints.mMaxSize.width != NS_MAXSIZE)
|
|
constraints.mMaxSize.width += windowSize.width - 200;
|
|
if (constraints.mMaxSize.height != NS_MAXSIZE)
|
|
constraints.mMaxSize.height += windowSize.height - 200;
|
|
|
|
aWidget->SetSizeConstraints(constraints);
|
|
}
|
|
|
|
void nsContainerFrame::SyncFrameViewAfterReflow(
|
|
nsPresContext* aPresContext, nsIFrame* aFrame, nsView* aView,
|
|
const nsRect& aVisualOverflowArea, ReflowChildFlags aFlags) {
|
|
if (!aView) {
|
|
return;
|
|
}
|
|
|
|
// Make sure the view is sized and positioned correctly
|
|
if (!(aFlags & ReflowChildFlags::NoMoveView)) {
|
|
PositionFrameView(aFrame);
|
|
}
|
|
|
|
if (!(aFlags & ReflowChildFlags::NoSizeView)) {
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
|
|
vm->ResizeView(aView, aVisualOverflowArea, true);
|
|
}
|
|
}
|
|
|
|
static nscoord GetCoord(const LengthPercentage& aCoord, nscoord aIfNotCoord) {
|
|
if (aCoord.ConvertsToLength()) {
|
|
return aCoord.ToLength();
|
|
}
|
|
return aIfNotCoord;
|
|
}
|
|
|
|
static nscoord GetCoord(const LengthPercentageOrAuto& aCoord,
|
|
nscoord aIfNotCoord) {
|
|
if (aCoord.IsAuto()) {
|
|
return aIfNotCoord;
|
|
}
|
|
return GetCoord(aCoord.AsLengthPercentage(), aIfNotCoord);
|
|
}
|
|
|
|
void nsContainerFrame::DoInlineIntrinsicISize(
|
|
gfxContext* aRenderingContext, InlineIntrinsicISizeData* aData,
|
|
nsLayoutUtils::IntrinsicISizeType aType) {
|
|
if (GetPrevInFlow()) return; // Already added.
|
|
|
|
MOZ_ASSERT(
|
|
aType == nsLayoutUtils::MIN_ISIZE || aType == nsLayoutUtils::PREF_ISIZE,
|
|
"bad type");
|
|
|
|
WritingMode wm = GetWritingMode();
|
|
mozilla::Side startSide = wm.PhysicalSideForInlineAxis(eLogicalEdgeStart);
|
|
mozilla::Side endSide = wm.PhysicalSideForInlineAxis(eLogicalEdgeEnd);
|
|
|
|
const nsStylePadding* stylePadding = StylePadding();
|
|
const nsStyleBorder* styleBorder = StyleBorder();
|
|
const nsStyleMargin* styleMargin = StyleMargin();
|
|
|
|
// This goes at the beginning no matter how things are broken and how
|
|
// messy the bidi situations are, since per CSS2.1 section 8.6
|
|
// (implemented in bug 328168), the startSide border is always on the
|
|
// first line.
|
|
// This frame is a first-in-flow, but it might have a previous bidi
|
|
// continuation, in which case that continuation should handle the startSide
|
|
// border.
|
|
// For box-decoration-break:clone we setup clonePBM = startPBM + endPBM and
|
|
// add that to each line. For box-decoration-break:slice clonePBM is zero.
|
|
nscoord clonePBM = 0; // PBM = PaddingBorderMargin
|
|
const bool sliceBreak =
|
|
styleBorder->mBoxDecorationBreak == StyleBoxDecorationBreak::Slice;
|
|
if (!GetPrevContinuation() || MOZ_UNLIKELY(!sliceBreak)) {
|
|
nscoord startPBM =
|
|
// clamp negative calc() to 0
|
|
std::max(GetCoord(stylePadding->mPadding.Get(startSide), 0), 0) +
|
|
styleBorder->GetComputedBorderWidth(startSide) +
|
|
GetCoord(styleMargin->mMargin.Get(startSide), 0);
|
|
if (MOZ_LIKELY(sliceBreak)) {
|
|
aData->mCurrentLine += startPBM;
|
|
} else {
|
|
clonePBM = startPBM;
|
|
}
|
|
}
|
|
|
|
nscoord endPBM =
|
|
// clamp negative calc() to 0
|
|
std::max(GetCoord(stylePadding->mPadding.Get(endSide), 0), 0) +
|
|
styleBorder->GetComputedBorderWidth(endSide) +
|
|
GetCoord(styleMargin->mMargin.Get(endSide), 0);
|
|
if (MOZ_UNLIKELY(!sliceBreak)) {
|
|
clonePBM += endPBM;
|
|
aData->mCurrentLine += clonePBM;
|
|
}
|
|
|
|
const nsLineList_iterator* savedLine = aData->mLine;
|
|
nsIFrame* const savedLineContainer = aData->LineContainer();
|
|
|
|
nsContainerFrame* lastInFlow;
|
|
for (nsContainerFrame* nif = this; nif;
|
|
nif = static_cast<nsContainerFrame*>(nif->GetNextInFlow())) {
|
|
if (aData->mCurrentLine == 0) {
|
|
aData->mCurrentLine = clonePBM;
|
|
}
|
|
for (nsIFrame* kid : nif->mFrames) {
|
|
if (aType == nsLayoutUtils::MIN_ISIZE)
|
|
kid->AddInlineMinISize(aRenderingContext,
|
|
static_cast<InlineMinISizeData*>(aData));
|
|
else
|
|
kid->AddInlinePrefISize(aRenderingContext,
|
|
static_cast<InlinePrefISizeData*>(aData));
|
|
}
|
|
|
|
// After we advance to our next-in-flow, the stored line and line container
|
|
// may no longer be correct. Just forget them.
|
|
aData->mLine = nullptr;
|
|
aData->SetLineContainer(nullptr);
|
|
|
|
lastInFlow = nif;
|
|
}
|
|
|
|
aData->mLine = savedLine;
|
|
aData->SetLineContainer(savedLineContainer);
|
|
|
|
// This goes at the end no matter how things are broken and how
|
|
// messy the bidi situations are, since per CSS2.1 section 8.6
|
|
// (implemented in bug 328168), the endSide border is always on the
|
|
// last line.
|
|
// We reached the last-in-flow, but it might have a next bidi
|
|
// continuation, in which case that continuation should handle
|
|
// the endSide border.
|
|
if (MOZ_LIKELY(!lastInFlow->GetNextContinuation() && sliceBreak)) {
|
|
aData->mCurrentLine += endPBM;
|
|
}
|
|
}
|
|
|
|
/* virtual */
|
|
LogicalSize nsContainerFrame::ComputeAutoSize(
|
|
gfxContext* aRenderingContext, WritingMode aWM, const LogicalSize& aCBSize,
|
|
nscoord aAvailableISize, const LogicalSize& aMargin,
|
|
const LogicalSize& aBorder, const LogicalSize& aPadding,
|
|
ComputeSizeFlags aFlags) {
|
|
LogicalSize result(aWM, 0xdeadbeef, NS_UNCONSTRAINEDSIZE);
|
|
nscoord availBased = aAvailableISize - aMargin.ISize(aWM) -
|
|
aBorder.ISize(aWM) - aPadding.ISize(aWM);
|
|
// replaced elements always shrink-wrap
|
|
if ((aFlags & ComputeSizeFlags::eShrinkWrap) || IsFrameOfType(eReplaced)) {
|
|
// Only bother computing our 'auto' ISize if the result will be used.
|
|
// It'll be used under two scenarios:
|
|
// - If our ISize property is itself 'auto'.
|
|
// - If we're using flex-basis in place of our ISize property (i.e. we're a
|
|
// flex item with our inline axis being the main axis), AND we have
|
|
// flex-basis:content.
|
|
const nsStylePosition* pos = StylePosition();
|
|
if (pos->ISize(aWM).IsAuto() ||
|
|
(pos->mFlexBasis.IsContent() && IsFlexItem() &&
|
|
nsFlexContainerFrame::IsItemInlineAxisMainAxis(this))) {
|
|
result.ISize(aWM) =
|
|
ShrinkWidthToFit(aRenderingContext, availBased, aFlags);
|
|
}
|
|
} else {
|
|
result.ISize(aWM) = availBased;
|
|
}
|
|
|
|
if (IsTableCaption()) {
|
|
// If we're a container for font size inflation, then shrink
|
|
// wrapping inside of us should not apply font size inflation.
|
|
AutoMaybeDisableFontInflation an(this);
|
|
|
|
WritingMode tableWM = GetParent()->GetWritingMode();
|
|
uint8_t captionSide = StyleTableBorder()->mCaptionSide;
|
|
|
|
if (aWM.IsOrthogonalTo(tableWM)) {
|
|
if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE) {
|
|
// For an orthogonal caption on a block-dir side of the table,
|
|
// shrink-wrap to min-isize.
|
|
result.ISize(aWM) = GetMinISize(aRenderingContext);
|
|
} else {
|
|
// An orthogonal caption on an inline-dir side of the table
|
|
// is constrained to the containing block.
|
|
nscoord pref = GetPrefISize(aRenderingContext);
|
|
if (pref > aCBSize.ISize(aWM)) {
|
|
pref = aCBSize.ISize(aWM);
|
|
}
|
|
if (pref < result.ISize(aWM)) {
|
|
result.ISize(aWM) = pref;
|
|
}
|
|
}
|
|
} else {
|
|
if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
|
|
result.ISize(aWM) = GetMinISize(aRenderingContext);
|
|
} else if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
|
|
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
|
|
// The outer frame constrains our available isize to the isize of
|
|
// the table. Grow if our min-isize is bigger than that, but not
|
|
// larger than the containing block isize. (It would really be nice
|
|
// to transmit that information another way, so we could grow up to
|
|
// the table's available isize, but that's harder.)
|
|
nscoord min = GetMinISize(aRenderingContext);
|
|
if (min > aCBSize.ISize(aWM)) {
|
|
min = aCBSize.ISize(aWM);
|
|
}
|
|
if (min > result.ISize(aWM)) {
|
|
result.ISize(aWM) = min;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void nsContainerFrame::ReflowChild(
|
|
nsIFrame* aKidFrame, nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize, const ReflowInput& aReflowInput,
|
|
const WritingMode& aWM, const LogicalPoint& aPos,
|
|
const nsSize& aContainerSize, ReflowChildFlags aFlags,
|
|
nsReflowStatus& aStatus, nsOverflowContinuationTracker* aTracker) {
|
|
MOZ_ASSERT(aReflowInput.mFrame == aKidFrame, "bad reflow input");
|
|
if (aWM.IsPhysicalRTL()) {
|
|
NS_ASSERTION(aContainerSize.width != NS_UNCONSTRAINEDSIZE,
|
|
"ReflowChild with unconstrained container width!");
|
|
}
|
|
MOZ_ASSERT(aDesiredSize.VisualOverflow() == nsRect(0, 0, 0, 0) &&
|
|
aDesiredSize.ScrollableOverflow() == nsRect(0, 0, 0, 0),
|
|
"please reset the overflow areas before calling ReflowChild");
|
|
|
|
// Position the child frame and its view if requested.
|
|
if (ReflowChildFlags::NoMoveFrame !=
|
|
(aFlags & ReflowChildFlags::NoMoveFrame)) {
|
|
aKidFrame->SetPosition(aWM, aPos, aContainerSize);
|
|
}
|
|
|
|
if (!(aFlags & ReflowChildFlags::NoMoveView)) {
|
|
PositionFrameView(aKidFrame);
|
|
PositionChildViews(aKidFrame);
|
|
}
|
|
|
|
// Reflow the child frame
|
|
aKidFrame->Reflow(aPresContext, aDesiredSize, aReflowInput, aStatus);
|
|
|
|
// If the child frame is complete, delete any next-in-flows,
|
|
// but only if the NoDeleteNextInFlowChild flag isn't set.
|
|
if (!aStatus.IsInlineBreakBefore() && aStatus.IsFullyComplete() &&
|
|
!(aFlags & ReflowChildFlags::NoDeleteNextInFlowChild)) {
|
|
nsIFrame* kidNextInFlow = aKidFrame->GetNextInFlow();
|
|
if (kidNextInFlow) {
|
|
// Remove all of the childs next-in-flows. Make sure that we ask
|
|
// the right parent to do the removal (it's possible that the
|
|
// parent is not this because we are executing pullup code)
|
|
nsOverflowContinuationTracker::AutoFinish fini(aTracker, aKidFrame);
|
|
kidNextInFlow->GetParent()->DeleteNextInFlowChild(kidNextInFlow, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX temporary: hold on to a copy of the old physical version of
|
|
// ReflowChild so that we can convert callers incrementally.
|
|
void nsContainerFrame::ReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput, nscoord aX,
|
|
nscoord aY, ReflowChildFlags aFlags,
|
|
nsReflowStatus& aStatus,
|
|
nsOverflowContinuationTracker* aTracker) {
|
|
MOZ_ASSERT(aReflowInput.mFrame == aKidFrame, "bad reflow input");
|
|
|
|
// Position the child frame and its view if requested.
|
|
if (ReflowChildFlags::NoMoveFrame !=
|
|
(aFlags & ReflowChildFlags::NoMoveFrame)) {
|
|
aKidFrame->SetPosition(nsPoint(aX, aY));
|
|
}
|
|
|
|
if (!(aFlags & ReflowChildFlags::NoMoveView)) {
|
|
PositionFrameView(aKidFrame);
|
|
PositionChildViews(aKidFrame);
|
|
}
|
|
|
|
// Reflow the child frame
|
|
aKidFrame->Reflow(aPresContext, aDesiredSize, aReflowInput, aStatus);
|
|
|
|
// If the child frame is complete, delete any next-in-flows,
|
|
// but only if the NoDeleteNextInFlowChild flag isn't set.
|
|
if (aStatus.IsFullyComplete() &&
|
|
!(aFlags & ReflowChildFlags::NoDeleteNextInFlowChild)) {
|
|
nsIFrame* kidNextInFlow = aKidFrame->GetNextInFlow();
|
|
if (kidNextInFlow) {
|
|
// Remove all of the childs next-in-flows. Make sure that we ask
|
|
// the right parent to do the removal (it's possible that the
|
|
// parent is not this because we are executing pullup code)
|
|
nsOverflowContinuationTracker::AutoFinish fini(aTracker, aKidFrame);
|
|
kidNextInFlow->GetParent()->DeleteNextInFlowChild(kidNextInFlow, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Position the views of |aFrame|'s descendants. A container frame
|
|
* should call this method if it moves a frame after |Reflow|.
|
|
*/
|
|
void nsContainerFrame::PositionChildViews(nsIFrame* aFrame) {
|
|
if (!(aFrame->GetStateBits() & NS_FRAME_HAS_CHILD_WITH_VIEW)) {
|
|
return;
|
|
}
|
|
|
|
// Recursively walk aFrame's child frames.
|
|
// Process the additional child lists, but skip the popup list as the
|
|
// view for popups is managed by the parent. Currently only nsMenuFrame
|
|
// and nsPopupSetFrame have a popupList and during layout will adjust the
|
|
// view manually to position the popup.
|
|
ChildListIterator lists(aFrame);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
if (lists.CurrentID() == kPopupList) {
|
|
continue;
|
|
}
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
// Position the frame's view (if it has one) otherwise recursively
|
|
// process its children
|
|
nsIFrame* childFrame = childFrames.get();
|
|
if (childFrame->HasView()) {
|
|
PositionFrameView(childFrame);
|
|
} else {
|
|
PositionChildViews(childFrame);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* De-optimize function to work around a VC2017 15.5+ compiler bug:
|
|
* https://bugzil.la/1424281#c12
|
|
*/
|
|
#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_AMD64)
|
|
# pragma optimize("g", off)
|
|
#endif
|
|
void nsContainerFrame::FinishReflowChild(
|
|
nsIFrame* aKidFrame, nsPresContext* aPresContext,
|
|
const ReflowOutput& aDesiredSize, const ReflowInput* aReflowInput,
|
|
const WritingMode& aWM, const LogicalPoint& aPos,
|
|
const nsSize& aContainerSize, nsIFrame::ReflowChildFlags aFlags) {
|
|
MOZ_ASSERT(!aReflowInput || aReflowInput->mFrame == aKidFrame);
|
|
MOZ_ASSERT(aReflowInput || aKidFrame->IsFrameOfType(eMathML) ||
|
|
aKidFrame->IsTableCellFrame(),
|
|
"aReflowInput should be passed in almost all cases");
|
|
|
|
if (aWM.IsPhysicalRTL()) {
|
|
NS_ASSERTION(aContainerSize.width != NS_UNCONSTRAINEDSIZE,
|
|
"FinishReflowChild with unconstrained container width!");
|
|
}
|
|
|
|
nsPoint curOrigin = aKidFrame->GetPosition();
|
|
WritingMode outerWM = aDesiredSize.GetWritingMode();
|
|
LogicalSize convertedSize =
|
|
aDesiredSize.Size(outerWM).ConvertTo(aWM, outerWM);
|
|
LogicalPoint pos(aPos);
|
|
|
|
if (aFlags & ReflowChildFlags::ApplyRelativePositioning) {
|
|
MOZ_ASSERT(aReflowInput, "caller must have passed reflow input");
|
|
// ApplyRelativePositioning in right-to-left writing modes needs to know
|
|
// the updated frame width to set the normal position correctly.
|
|
aKidFrame->SetSize(aWM, convertedSize);
|
|
|
|
const LogicalMargin offsets =
|
|
aReflowInput->ComputedLogicalOffsets().ConvertTo(
|
|
aWM, aReflowInput->GetWritingMode());
|
|
ReflowInput::ApplyRelativePositioning(aKidFrame, aWM, offsets, &pos,
|
|
aContainerSize);
|
|
}
|
|
|
|
if (ReflowChildFlags::NoMoveFrame !=
|
|
(aFlags & ReflowChildFlags::NoMoveFrame)) {
|
|
aKidFrame->SetRect(aWM, LogicalRect(aWM, pos, convertedSize),
|
|
aContainerSize);
|
|
} else {
|
|
aKidFrame->SetSize(aWM, convertedSize);
|
|
}
|
|
|
|
if (aKidFrame->HasView()) {
|
|
nsView* view = aKidFrame->GetView();
|
|
// Make sure the frame's view is properly sized and positioned and has
|
|
// things like opacity correct
|
|
SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
|
|
aDesiredSize.VisualOverflow(), aFlags);
|
|
}
|
|
|
|
nsPoint newOrigin = aKidFrame->GetPosition();
|
|
if (!(aFlags & ReflowChildFlags::NoMoveView) && curOrigin != newOrigin) {
|
|
if (!aKidFrame->HasView()) {
|
|
// If the frame has moved, then we need to make sure any child views are
|
|
// correctly positioned
|
|
PositionChildViews(aKidFrame);
|
|
}
|
|
}
|
|
|
|
aKidFrame->DidReflow(aPresContext, aReflowInput);
|
|
}
|
|
#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_AMD64)
|
|
# pragma optimize("", on)
|
|
#endif
|
|
|
|
// XXX temporary: hold on to a copy of the old physical version of
|
|
// FinishReflowChild so that we can convert callers incrementally.
|
|
void nsContainerFrame::FinishReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
const ReflowOutput& aDesiredSize,
|
|
const ReflowInput* aReflowInput,
|
|
nscoord aX, nscoord aY,
|
|
ReflowChildFlags aFlags) {
|
|
MOZ_ASSERT(!(aFlags & ReflowChildFlags::ApplyRelativePositioning),
|
|
"only the logical version supports ApplyRelativePositioning "
|
|
"since ApplyRelativePositioning requires the container size");
|
|
|
|
nsPoint curOrigin = aKidFrame->GetPosition();
|
|
nsPoint pos(aX, aY);
|
|
nsSize size(aDesiredSize.PhysicalSize());
|
|
|
|
if (ReflowChildFlags::NoMoveFrame !=
|
|
(aFlags & ReflowChildFlags::NoMoveFrame)) {
|
|
aKidFrame->SetRect(nsRect(pos, size));
|
|
} else {
|
|
aKidFrame->SetSize(size);
|
|
}
|
|
|
|
if (aKidFrame->HasView()) {
|
|
nsView* view = aKidFrame->GetView();
|
|
// Make sure the frame's view is properly sized and positioned and has
|
|
// things like opacity correct
|
|
SyncFrameViewAfterReflow(aPresContext, aKidFrame, view,
|
|
aDesiredSize.VisualOverflow(), aFlags);
|
|
}
|
|
|
|
if (!(aFlags & ReflowChildFlags::NoMoveView) && curOrigin != pos) {
|
|
if (!aKidFrame->HasView()) {
|
|
// If the frame has moved, then we need to make sure any child views are
|
|
// correctly positioned
|
|
PositionChildViews(aKidFrame);
|
|
}
|
|
}
|
|
|
|
aKidFrame->DidReflow(aPresContext, aReflowInput);
|
|
}
|
|
|
|
void nsContainerFrame::ReflowOverflowContainerChildren(
|
|
nsPresContext* aPresContext, const ReflowInput& aReflowInput,
|
|
nsOverflowAreas& aOverflowRects, ReflowChildFlags aFlags,
|
|
nsReflowStatus& aStatus, ChildFrameMerger aMergeFunc) {
|
|
MOZ_ASSERT(aPresContext, "null pointer");
|
|
|
|
nsFrameList* overflowContainers =
|
|
DrainExcessOverflowContainersList(aMergeFunc);
|
|
if (!overflowContainers) {
|
|
return; // nothing to reflow
|
|
}
|
|
|
|
nsOverflowContinuationTracker tracker(this, false, false);
|
|
bool shouldReflowAllKids = aReflowInput.ShouldReflowAllKids();
|
|
|
|
for (nsIFrame* frame : *overflowContainers) {
|
|
if (frame->GetPrevInFlow()->GetParent() != GetPrevInFlow()) {
|
|
// frame's prevInFlow has moved, skip reflowing this frame;
|
|
// it will get reflowed once it's been placed
|
|
if (GetNextInFlow()) {
|
|
// We report OverflowIncomplete status in this case to avoid our parent
|
|
// deleting our next-in-flows which might destroy non-empty frames.
|
|
nsReflowStatus status;
|
|
status.SetOverflowIncomplete();
|
|
aStatus.MergeCompletionStatusFrom(status);
|
|
}
|
|
continue;
|
|
}
|
|
// If the available vertical height has changed, we need to reflow
|
|
// even if the frame isn't dirty.
|
|
if (shouldReflowAllKids || NS_SUBTREE_DIRTY(frame)) {
|
|
// Get prev-in-flow
|
|
nsIFrame* prevInFlow = frame->GetPrevInFlow();
|
|
NS_ASSERTION(prevInFlow,
|
|
"overflow container frame must have a prev-in-flow");
|
|
NS_ASSERTION(
|
|
frame->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER,
|
|
"overflow container frame must have overflow container bit set");
|
|
WritingMode wm = frame->GetWritingMode();
|
|
nsSize containerSize = aReflowInput.AvailableSize(wm).GetPhysicalSize(wm);
|
|
LogicalRect prevRect = prevInFlow->GetLogicalRect(wm, containerSize);
|
|
|
|
// Initialize reflow params
|
|
LogicalSize availSpace(wm, prevRect.ISize(wm),
|
|
aReflowInput.AvailableSize(wm).BSize(wm));
|
|
ReflowOutput desiredSize(aReflowInput);
|
|
ReflowInput frameState(aPresContext, aReflowInput, frame, availSpace);
|
|
nsReflowStatus frameStatus;
|
|
|
|
// Reflow
|
|
LogicalPoint pos(wm, prevRect.IStart(wm), 0);
|
|
ReflowChild(frame, aPresContext, desiredSize, frameState, wm, pos,
|
|
containerSize, aFlags, frameStatus, &tracker);
|
|
// XXXfr Do we need to override any shrinkwrap effects here?
|
|
// e.g. desiredSize.Width() = prevRect.width;
|
|
FinishReflowChild(frame, aPresContext, desiredSize, &frameState, wm, pos,
|
|
containerSize, aFlags);
|
|
|
|
// Handle continuations
|
|
if (!frameStatus.IsFullyComplete()) {
|
|
if (frame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
// Abspos frames can't cause their parent to be incomplete,
|
|
// only overflow incomplete.
|
|
frameStatus.SetOverflowIncomplete();
|
|
} else {
|
|
NS_ASSERTION(frameStatus.IsComplete(),
|
|
"overflow container frames can't be incomplete, only "
|
|
"overflow-incomplete");
|
|
}
|
|
|
|
// Acquire a next-in-flow, creating it if necessary
|
|
nsIFrame* nif = frame->GetNextInFlow();
|
|
if (!nif) {
|
|
NS_ASSERTION(frameStatus.NextInFlowNeedsReflow(),
|
|
"Someone forgot a NextInFlowNeedsReflow flag");
|
|
nif = PresShell()->FrameConstructor()->CreateContinuingFrame(frame,
|
|
this);
|
|
} else if (!(nif->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
// used to be a normal next-in-flow; steal it from the child list
|
|
nsresult rv = nif->GetParent()->StealFrame(nif);
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
tracker.Insert(nif, frameStatus);
|
|
}
|
|
aStatus.MergeCompletionStatusFrom(frameStatus);
|
|
// At this point it would be nice to assert
|
|
// !frame->GetOverflowRect().IsEmpty(), but we have some unsplittable
|
|
// frames that, when taller than availableHeight will push zero-height
|
|
// content into a next-in-flow.
|
|
} else {
|
|
tracker.Skip(frame, aStatus);
|
|
if (aReflowInput.mFloatManager) {
|
|
nsBlockFrame::RecoverFloatsFor(frame, *aReflowInput.mFloatManager,
|
|
aReflowInput.GetWritingMode(),
|
|
aReflowInput.ComputedPhysicalSize());
|
|
}
|
|
}
|
|
ConsiderChildOverflow(aOverflowRects, frame);
|
|
}
|
|
}
|
|
|
|
void nsContainerFrame::DisplayOverflowContainers(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) {
|
|
nsFrameList* overflowconts = GetPropTableFrames(OverflowContainersProperty());
|
|
if (overflowconts) {
|
|
for (nsIFrame* frame : *overflowconts) {
|
|
BuildDisplayListForChild(aBuilder, frame, aLists);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool TryRemoveFrame(nsIFrame* aFrame,
|
|
nsContainerFrame::FrameListPropertyDescriptor aProp,
|
|
nsIFrame* aChildToRemove) {
|
|
nsFrameList* list = aFrame->GetProperty(aProp);
|
|
if (list && list->StartRemoveFrame(aChildToRemove)) {
|
|
// aChildToRemove *may* have been removed from this list.
|
|
if (list->IsEmpty()) {
|
|
Unused << aFrame->TakeProperty(aProp);
|
|
list->Delete(aFrame->PresShell());
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool nsContainerFrame::MaybeStealOverflowContainerFrame(nsIFrame* aChild) {
|
|
bool removed = false;
|
|
if (MOZ_UNLIKELY(aChild->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
// Try removing from the overflow container list.
|
|
removed = ::TryRemoveFrame(this, OverflowContainersProperty(), aChild);
|
|
if (!removed) {
|
|
// It might be in the excess overflow container list.
|
|
removed =
|
|
::TryRemoveFrame(this, ExcessOverflowContainersProperty(), aChild);
|
|
}
|
|
}
|
|
return removed;
|
|
}
|
|
|
|
nsresult nsContainerFrame::StealFrame(nsIFrame* aChild) {
|
|
#ifdef DEBUG
|
|
if (!mFrames.ContainsFrame(aChild)) {
|
|
nsFrameList* list = GetOverflowFrames();
|
|
if (!list || !list->ContainsFrame(aChild)) {
|
|
list = GetProperty(OverflowContainersProperty());
|
|
if (!list || !list->ContainsFrame(aChild)) {
|
|
list = GetProperty(ExcessOverflowContainersProperty());
|
|
MOZ_ASSERT(list && list->ContainsFrame(aChild),
|
|
"aChild isn't our child"
|
|
" or on a frame list not supported by StealFrame");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool removed = MaybeStealOverflowContainerFrame(aChild);
|
|
if (!removed) {
|
|
// NOTE nsColumnSetFrame and nsCanvasFrame have their overflow containers
|
|
// on the normal lists so we might get here also if the frame bit
|
|
// NS_FRAME_IS_OVERFLOW_CONTAINER is set.
|
|
removed = mFrames.StartRemoveFrame(aChild);
|
|
if (!removed) {
|
|
// We didn't find the child in our principal child list.
|
|
// Maybe it's on the overflow list?
|
|
nsFrameList* frameList = GetOverflowFrames();
|
|
if (frameList) {
|
|
removed = frameList->ContinueRemoveFrame(aChild);
|
|
if (frameList->IsEmpty()) {
|
|
DestroyOverflowList();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(removed, "StealFrame: can't find aChild");
|
|
return removed ? NS_OK : NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsFrameList nsContainerFrame::StealFramesAfter(nsIFrame* aChild) {
|
|
NS_ASSERTION(
|
|
!aChild || !(aChild->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER),
|
|
"StealFramesAfter doesn't handle overflow containers");
|
|
NS_ASSERTION(!IsBlockFrame(), "unexpected call");
|
|
|
|
if (!aChild) {
|
|
nsFrameList copy(mFrames);
|
|
mFrames.Clear();
|
|
return copy;
|
|
}
|
|
|
|
for (nsFrameList::FrameLinkEnumerator iter(mFrames); !iter.AtEnd();
|
|
iter.Next()) {
|
|
if (iter.PrevFrame() == aChild) {
|
|
return mFrames.ExtractTail(iter);
|
|
}
|
|
}
|
|
|
|
// We didn't find the child in the principal child list.
|
|
// Maybe it's on the overflow list?
|
|
nsFrameList* overflowFrames = GetOverflowFrames();
|
|
if (overflowFrames) {
|
|
for (nsFrameList::FrameLinkEnumerator iter(*overflowFrames); !iter.AtEnd();
|
|
iter.Next()) {
|
|
if (iter.PrevFrame() == aChild) {
|
|
return overflowFrames->ExtractTail(iter);
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ERROR("StealFramesAfter: can't find aChild");
|
|
return nsFrameList::EmptyList();
|
|
}
|
|
|
|
/*
|
|
* Create a next-in-flow for aFrame. Will return the newly created
|
|
* frame <b>if and only if</b> a new frame is created; otherwise
|
|
* nullptr is returned.
|
|
*/
|
|
nsIFrame* nsContainerFrame::CreateNextInFlow(nsIFrame* aFrame) {
|
|
MOZ_ASSERT(
|
|
!IsBlockFrame(),
|
|
"you should have called nsBlockFrame::CreateContinuationFor instead");
|
|
MOZ_ASSERT(mFrames.ContainsFrame(aFrame), "expected an in-flow child frame");
|
|
|
|
nsIFrame* nextInFlow = aFrame->GetNextInFlow();
|
|
if (nullptr == nextInFlow) {
|
|
// Create a continuation frame for the child frame and insert it
|
|
// into our child list.
|
|
nextInFlow =
|
|
PresShell()->FrameConstructor()->CreateContinuingFrame(aFrame, this);
|
|
mFrames.InsertFrame(nullptr, aFrame, nextInFlow);
|
|
|
|
NS_FRAME_LOG(NS_FRAME_TRACE_NEW_FRAMES,
|
|
("nsContainerFrame::CreateNextInFlow: frame=%p nextInFlow=%p",
|
|
aFrame, nextInFlow));
|
|
|
|
return nextInFlow;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* Remove and delete aNextInFlow and its next-in-flows. Updates the sibling and
|
|
* flow pointers
|
|
*/
|
|
void nsContainerFrame::DeleteNextInFlowChild(nsIFrame* aNextInFlow,
|
|
bool aDeletingEmptyFrames) {
|
|
#ifdef DEBUG
|
|
nsIFrame* prevInFlow = aNextInFlow->GetPrevInFlow();
|
|
#endif
|
|
MOZ_ASSERT(prevInFlow, "bad prev-in-flow");
|
|
|
|
// If the next-in-flow has a next-in-flow then delete it, too (and
|
|
// delete it first).
|
|
// Do this in a loop so we don't overflow the stack for frames
|
|
// with very many next-in-flows
|
|
nsIFrame* nextNextInFlow = aNextInFlow->GetNextInFlow();
|
|
if (nextNextInFlow) {
|
|
AutoTArray<nsIFrame*, 8> frames;
|
|
for (nsIFrame* f = nextNextInFlow; f; f = f->GetNextInFlow()) {
|
|
frames.AppendElement(f);
|
|
}
|
|
for (nsIFrame* delFrame : Reversed(frames)) {
|
|
delFrame->GetParent()->DeleteNextInFlowChild(delFrame,
|
|
aDeletingEmptyFrames);
|
|
}
|
|
}
|
|
|
|
// Take the next-in-flow out of the parent's child list
|
|
DebugOnly<nsresult> rv = StealFrame(aNextInFlow);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "StealFrame failure");
|
|
|
|
#ifdef DEBUG
|
|
if (aDeletingEmptyFrames) {
|
|
nsLayoutUtils::AssertTreeOnlyEmptyNextInFlows(aNextInFlow);
|
|
}
|
|
#endif
|
|
|
|
// Delete the next-in-flow frame and its descendants. This will also
|
|
// remove it from its next-in-flow/prev-in-flow chain.
|
|
aNextInFlow->Destroy();
|
|
|
|
MOZ_ASSERT(!prevInFlow->GetNextInFlow(), "non null next-in-flow");
|
|
}
|
|
|
|
/**
|
|
* Set the frames on the overflow list
|
|
*/
|
|
void nsContainerFrame::SetOverflowFrames(const nsFrameList& aOverflowFrames) {
|
|
MOZ_ASSERT(aOverflowFrames.NotEmpty(), "Shouldn't be called");
|
|
|
|
nsPresContext* pc = PresContext();
|
|
nsFrameList* newList = new (pc->PresShell()) nsFrameList(aOverflowFrames);
|
|
|
|
SetProperty(OverflowProperty(), newList);
|
|
}
|
|
|
|
nsFrameList* nsContainerFrame::GetPropTableFrames(
|
|
FrameListPropertyDescriptor aProperty) const {
|
|
return GetProperty(aProperty);
|
|
}
|
|
|
|
nsFrameList* nsContainerFrame::RemovePropTableFrames(
|
|
FrameListPropertyDescriptor aProperty) {
|
|
return TakeProperty(aProperty);
|
|
}
|
|
|
|
void nsContainerFrame::SetPropTableFrames(
|
|
nsFrameList* aFrameList, FrameListPropertyDescriptor aProperty) {
|
|
MOZ_ASSERT(aProperty && aFrameList, "null ptr");
|
|
MOZ_ASSERT(
|
|
(aProperty != nsContainerFrame::OverflowContainersProperty() &&
|
|
aProperty != nsContainerFrame::ExcessOverflowContainersProperty()) ||
|
|
IsFrameOfType(nsIFrame::eCanContainOverflowContainers),
|
|
"this type of frame can't have overflow containers");
|
|
MOZ_ASSERT(!GetPropTableFrames(aProperty));
|
|
SetProperty(aProperty, aFrameList);
|
|
}
|
|
|
|
void nsContainerFrame::PushChildrenToOverflow(nsIFrame* aFromChild,
|
|
nsIFrame* aPrevSibling) {
|
|
MOZ_ASSERT(aFromChild, "null pointer");
|
|
MOZ_ASSERT(aPrevSibling, "pushing first child");
|
|
MOZ_ASSERT(aPrevSibling->GetNextSibling() == aFromChild, "bad prev sibling");
|
|
|
|
// Add the frames to our overflow list (let our next in flow drain
|
|
// our overflow list when it is ready)
|
|
SetOverflowFrames(mFrames.RemoveFramesAfter(aPrevSibling));
|
|
}
|
|
|
|
void nsContainerFrame::PushChildren(nsIFrame* aFromChild,
|
|
nsIFrame* aPrevSibling) {
|
|
MOZ_ASSERT(aFromChild, "null pointer");
|
|
MOZ_ASSERT(aPrevSibling, "pushing first child");
|
|
MOZ_ASSERT(aPrevSibling->GetNextSibling() == aFromChild, "bad prev sibling");
|
|
|
|
// Disconnect aFromChild from its previous sibling
|
|
nsFrameList tail = mFrames.RemoveFramesAfter(aPrevSibling);
|
|
|
|
nsContainerFrame* nextInFlow =
|
|
static_cast<nsContainerFrame*>(GetNextInFlow());
|
|
if (nextInFlow) {
|
|
// XXX This is not a very good thing to do. If it gets removed
|
|
// then remove the copy of this routine that doesn't do this from
|
|
// nsInlineFrame.
|
|
// When pushing and pulling frames we need to check for whether any
|
|
// views need to be reparented.
|
|
for (nsIFrame* f = aFromChild; f; f = f->GetNextSibling()) {
|
|
nsContainerFrame::ReparentFrameView(f, this, nextInFlow);
|
|
}
|
|
nextInFlow->mFrames.InsertFrames(nextInFlow, nullptr, tail);
|
|
} else {
|
|
// Add the frames to our overflow list
|
|
SetOverflowFrames(tail);
|
|
}
|
|
}
|
|
|
|
bool nsContainerFrame::PushIncompleteChildren(
|
|
const FrameHashtable& aPushedItems, const FrameHashtable& aIncompleteItems,
|
|
const FrameHashtable& aOverflowIncompleteItems) {
|
|
MOZ_ASSERT(IsFlexOrGridContainer(),
|
|
"Only Grid / Flex containers can call this!");
|
|
|
|
if (aPushedItems.IsEmpty() && aIncompleteItems.IsEmpty() &&
|
|
aOverflowIncompleteItems.IsEmpty()) {
|
|
return false;
|
|
}
|
|
|
|
// Iterate the children in normal document order and append them (or a NIF)
|
|
// to one of the following frame lists according to their status.
|
|
nsFrameList pushedList;
|
|
nsFrameList incompleteList;
|
|
nsFrameList overflowIncompleteList;
|
|
auto* fc = PresShell()->FrameConstructor();
|
|
for (nsIFrame* child = GetChildList(kPrincipalList).FirstChild(); child;) {
|
|
MOZ_ASSERT((aPushedItems.Contains(child) ? 1 : 0) +
|
|
(aIncompleteItems.Contains(child) ? 1 : 0) +
|
|
(aOverflowIncompleteItems.Contains(child) ? 1 : 0) <=
|
|
1,
|
|
"child should only be in one of these sets");
|
|
// Save the next-sibling so we can continue the loop if |child| is moved.
|
|
nsIFrame* next = child->GetNextSibling();
|
|
if (aPushedItems.Contains(child)) {
|
|
MOZ_ASSERT(child->GetParent() == this);
|
|
StealFrame(child);
|
|
pushedList.AppendFrame(nullptr, child);
|
|
} else if (aIncompleteItems.Contains(child)) {
|
|
nsIFrame* childNIF = child->GetNextInFlow();
|
|
if (!childNIF) {
|
|
childNIF = fc->CreateContinuingFrame(child, this);
|
|
incompleteList.AppendFrame(nullptr, childNIF);
|
|
} else {
|
|
auto* parent = childNIF->GetParent();
|
|
MOZ_ASSERT(parent != this || !mFrames.ContainsFrame(childNIF),
|
|
"child's NIF shouldn't be in the same principal list");
|
|
// If child's existing NIF is an overflow container, convert it to an
|
|
// actual NIF, since now |child| has non-overflow stuff to give it.
|
|
// Or, if it's further away then our next-in-flow, then pull it up.
|
|
if ((childNIF->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) ||
|
|
(parent != this && parent != GetNextInFlow())) {
|
|
parent->StealFrame(childNIF);
|
|
childNIF->RemoveStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
|
|
if (parent == this) {
|
|
incompleteList.AppendFrame(nullptr, childNIF);
|
|
} else {
|
|
// If childNIF already lives on the next fragment, then we
|
|
// don't need to reparent it, since we know it's destined to end
|
|
// up there anyway. Just move it to its parent's overflow list.
|
|
if (parent == GetNextInFlow()) {
|
|
nsFrameList toMove(childNIF, childNIF);
|
|
parent->MergeSortedOverflow(toMove);
|
|
} else {
|
|
ReparentFrame(childNIF, parent, this);
|
|
incompleteList.AppendFrame(nullptr, childNIF);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (aOverflowIncompleteItems.Contains(child)) {
|
|
nsIFrame* childNIF = child->GetNextInFlow();
|
|
if (!childNIF) {
|
|
childNIF = fc->CreateContinuingFrame(child, this);
|
|
childNIF->AddStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
|
|
overflowIncompleteList.AppendFrame(nullptr, childNIF);
|
|
} else {
|
|
DebugOnly<nsContainerFrame*> lastParent = this;
|
|
auto* nif = static_cast<nsContainerFrame*>(GetNextInFlow());
|
|
// If child has any non-overflow-container NIFs, convert them to
|
|
// overflow containers, since that's all |child| needs now.
|
|
while (childNIF &&
|
|
!childNIF->HasAnyStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
auto* parent = childNIF->GetParent();
|
|
parent->StealFrame(childNIF);
|
|
childNIF->AddStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
|
|
if (parent == this) {
|
|
overflowIncompleteList.AppendFrame(nullptr, childNIF);
|
|
} else {
|
|
if (!nif || parent == nif) {
|
|
nsFrameList toMove(childNIF, childNIF);
|
|
parent->MergeSortedExcessOverflowContainers(toMove);
|
|
} else {
|
|
ReparentFrame(childNIF, parent, nif);
|
|
nsFrameList toMove(childNIF, childNIF);
|
|
nif->MergeSortedExcessOverflowContainers(toMove);
|
|
}
|
|
// We only need to reparent the first childNIF (or not at all if
|
|
// its parent is our NIF).
|
|
nif = nullptr;
|
|
}
|
|
lastParent = parent;
|
|
childNIF = childNIF->GetNextInFlow();
|
|
}
|
|
}
|
|
}
|
|
child = next;
|
|
}
|
|
|
|
// Merge the results into our respective overflow child lists.
|
|
if (!pushedList.IsEmpty()) {
|
|
MergeSortedOverflow(pushedList);
|
|
}
|
|
if (!incompleteList.IsEmpty()) {
|
|
MergeSortedOverflow(incompleteList);
|
|
}
|
|
if (!overflowIncompleteList.IsEmpty()) {
|
|
MergeSortedExcessOverflowContainers(overflowIncompleteList);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool nsContainerFrame::MoveOverflowToChildList() {
|
|
bool result = false;
|
|
|
|
// Check for an overflow list with our prev-in-flow
|
|
nsContainerFrame* prevInFlow = (nsContainerFrame*)GetPrevInFlow();
|
|
if (nullptr != prevInFlow) {
|
|
AutoFrameListPtr prevOverflowFrames(PresContext(),
|
|
prevInFlow->StealOverflowFrames());
|
|
if (prevOverflowFrames) {
|
|
// Tables are special; they can have repeated header/footer
|
|
// frames on mFrames at this point.
|
|
NS_ASSERTION(mFrames.IsEmpty() || IsTableFrame(), "bad overflow list");
|
|
// When pushing and pulling frames we need to check for whether any
|
|
// views need to be reparented.
|
|
nsContainerFrame::ReparentFrameViewList(*prevOverflowFrames, prevInFlow,
|
|
this);
|
|
mFrames.AppendFrames(this, *prevOverflowFrames);
|
|
result = true;
|
|
}
|
|
}
|
|
|
|
// It's also possible that we have an overflow list for ourselves.
|
|
return DrainSelfOverflowList() || result;
|
|
}
|
|
|
|
void nsContainerFrame::MergeSortedOverflow(nsFrameList& aList) {
|
|
if (aList.IsEmpty()) {
|
|
return;
|
|
}
|
|
MOZ_ASSERT(
|
|
!aList.FirstChild()->HasAnyStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER),
|
|
"this is the wrong list to put this child frame");
|
|
MOZ_ASSERT(aList.FirstChild()->GetParent() == this);
|
|
nsFrameList* overflow = GetOverflowFrames();
|
|
if (overflow) {
|
|
MergeSortedFrameLists(*overflow, aList, GetContent());
|
|
} else {
|
|
SetOverflowFrames(aList);
|
|
}
|
|
}
|
|
|
|
void nsContainerFrame::MergeSortedExcessOverflowContainers(nsFrameList& aList) {
|
|
if (aList.IsEmpty()) {
|
|
return;
|
|
}
|
|
MOZ_ASSERT(
|
|
aList.FirstChild()->HasAnyStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER),
|
|
"this is the wrong list to put this child frame");
|
|
MOZ_ASSERT(aList.FirstChild()->GetParent() == this);
|
|
nsFrameList* eoc = GetPropTableFrames(ExcessOverflowContainersProperty());
|
|
if (eoc) {
|
|
MergeSortedFrameLists(*eoc, aList, GetContent());
|
|
} else {
|
|
SetPropTableFrames(new (PresShell()) nsFrameList(aList),
|
|
ExcessOverflowContainersProperty());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Is aFrame1 a prev-continuation of aFrame2?
|
|
*/
|
|
static bool IsPrevContinuationOf(nsIFrame* aFrame1, nsIFrame* aFrame2) {
|
|
nsIFrame* prev = aFrame2;
|
|
while ((prev = prev->GetPrevContinuation())) {
|
|
if (prev == aFrame1) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void nsContainerFrame::MergeSortedFrameLists(nsFrameList& aDest,
|
|
nsFrameList& aSrc,
|
|
nsIContent* aCommonAncestor) {
|
|
nsIFrame* dest = aDest.FirstChild();
|
|
for (nsIFrame* src = aSrc.FirstChild(); src;) {
|
|
if (!dest) {
|
|
aDest.AppendFrames(nullptr, aSrc);
|
|
break;
|
|
}
|
|
nsIContent* srcContent = src->GetContent();
|
|
nsIContent* destContent = dest->GetContent();
|
|
int32_t result = nsLayoutUtils::CompareTreePosition(srcContent, destContent,
|
|
aCommonAncestor);
|
|
if (MOZ_UNLIKELY(result == 0)) {
|
|
// NOTE: we get here when comparing ::before/::after for the same element.
|
|
if (MOZ_UNLIKELY(srcContent->IsGeneratedContentContainerForBefore())) {
|
|
if (MOZ_LIKELY(!destContent->IsGeneratedContentContainerForBefore()) ||
|
|
::IsPrevContinuationOf(src, dest)) {
|
|
result = -1;
|
|
}
|
|
} else if (MOZ_UNLIKELY(
|
|
srcContent->IsGeneratedContentContainerForAfter())) {
|
|
if (MOZ_UNLIKELY(destContent->IsGeneratedContentContainerForAfter()) &&
|
|
::IsPrevContinuationOf(src, dest)) {
|
|
result = -1;
|
|
}
|
|
} else if (::IsPrevContinuationOf(src, dest)) {
|
|
result = -1;
|
|
}
|
|
}
|
|
if (result < 0) {
|
|
// src should come before dest
|
|
nsIFrame* next = src->GetNextSibling();
|
|
aSrc.RemoveFrame(src);
|
|
aDest.InsertFrame(nullptr, dest->GetPrevSibling(), src);
|
|
src = next;
|
|
} else {
|
|
dest = dest->GetNextSibling();
|
|
}
|
|
}
|
|
MOZ_ASSERT(aSrc.IsEmpty());
|
|
}
|
|
|
|
bool nsContainerFrame::MoveInlineOverflowToChildList(nsIFrame* aLineContainer) {
|
|
MOZ_ASSERT(aLineContainer,
|
|
"Must have line container for moving inline overflows");
|
|
|
|
bool result = false;
|
|
|
|
// Check for an overflow list with our prev-in-flow
|
|
if (auto prevInFlow = static_cast<nsContainerFrame*>(GetPrevInFlow())) {
|
|
AutoFrameListPtr prevOverflowFrames(PresContext(),
|
|
prevInFlow->StealOverflowFrames());
|
|
if (prevOverflowFrames) {
|
|
// We may need to reparent floats from prev-in-flow to our line
|
|
// container if the container has prev continuation.
|
|
if (aLineContainer->GetPrevContinuation()) {
|
|
ReparentFloatsForInlineChild(aLineContainer,
|
|
prevOverflowFrames->FirstChild(), true);
|
|
}
|
|
// When pushing and pulling frames we need to check for whether
|
|
// any views need to be reparented.
|
|
nsContainerFrame::ReparentFrameViewList(*prevOverflowFrames, prevInFlow,
|
|
this);
|
|
// Prepend overflow frames to the list.
|
|
mFrames.InsertFrames(this, nullptr, *prevOverflowFrames);
|
|
result = true;
|
|
}
|
|
}
|
|
|
|
// It's also possible that we have overflow list for ourselves.
|
|
return DrainSelfOverflowList() || result;
|
|
}
|
|
|
|
bool nsContainerFrame::DrainSelfOverflowList() {
|
|
AutoFrameListPtr overflowFrames(PresContext(), StealOverflowFrames());
|
|
if (overflowFrames) {
|
|
mFrames.AppendFrames(nullptr, *overflowFrames);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsFrameList* nsContainerFrame::DrainExcessOverflowContainersList(
|
|
ChildFrameMerger aMergeFunc) {
|
|
nsFrameList* overflowContainers =
|
|
GetPropTableFrames(OverflowContainersProperty());
|
|
|
|
NS_ASSERTION(!(overflowContainers && GetPrevInFlow() &&
|
|
static_cast<nsContainerFrame*>(GetPrevInFlow())
|
|
->GetPropTableFrames(ExcessOverflowContainersProperty())),
|
|
"conflicting overflow containers lists");
|
|
|
|
if (!overflowContainers) {
|
|
// Drain excess from previnflow
|
|
nsContainerFrame* prev = (nsContainerFrame*)GetPrevInFlow();
|
|
if (prev) {
|
|
nsFrameList* excessFrames =
|
|
prev->RemovePropTableFrames(ExcessOverflowContainersProperty());
|
|
if (excessFrames) {
|
|
excessFrames->ApplySetParent(this);
|
|
nsContainerFrame::ReparentFrameViewList(*excessFrames, prev, this);
|
|
overflowContainers = excessFrames;
|
|
SetPropTableFrames(overflowContainers, OverflowContainersProperty());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Our own excess overflow containers from a previous reflow can still be
|
|
// present if our next-in-flow hasn't been reflown yet. Move any children
|
|
// from it that don't have a continuation in this frame to the
|
|
// OverflowContainers list.
|
|
nsFrameList* selfExcessOCFrames =
|
|
RemovePropTableFrames(ExcessOverflowContainersProperty());
|
|
if (selfExcessOCFrames) {
|
|
nsFrameList toMove;
|
|
auto child = selfExcessOCFrames->FirstChild();
|
|
while (child) {
|
|
auto next = child->GetNextSibling();
|
|
MOZ_ASSERT(child->GetPrevInFlow(),
|
|
"ExcessOverflowContainers frames must be continuations");
|
|
if (child->GetPrevInFlow()->GetParent() != this) {
|
|
selfExcessOCFrames->RemoveFrame(child);
|
|
toMove.AppendFrame(nullptr, child);
|
|
}
|
|
child = next;
|
|
}
|
|
if (toMove.IsEmpty()) {
|
|
SetPropTableFrames(selfExcessOCFrames,
|
|
ExcessOverflowContainersProperty());
|
|
} else if (overflowContainers) {
|
|
aMergeFunc(*overflowContainers, toMove, this);
|
|
if (selfExcessOCFrames->IsEmpty()) {
|
|
selfExcessOCFrames->Delete(PresShell());
|
|
} else {
|
|
SetPropTableFrames(selfExcessOCFrames,
|
|
ExcessOverflowContainersProperty());
|
|
}
|
|
} else {
|
|
if (selfExcessOCFrames->IsEmpty()) {
|
|
*selfExcessOCFrames = toMove;
|
|
overflowContainers = selfExcessOCFrames;
|
|
} else {
|
|
SetPropTableFrames(selfExcessOCFrames,
|
|
ExcessOverflowContainersProperty());
|
|
auto shell = PresShell();
|
|
overflowContainers = new (shell) nsFrameList(toMove);
|
|
}
|
|
SetPropTableFrames(overflowContainers, OverflowContainersProperty());
|
|
}
|
|
}
|
|
|
|
return overflowContainers;
|
|
}
|
|
|
|
nsIFrame* nsContainerFrame::GetNextInFlowChild(
|
|
ContinuationTraversingState& aState, bool* aIsInOverflow) {
|
|
nsContainerFrame*& nextInFlow = aState.mNextInFlow;
|
|
while (nextInFlow) {
|
|
// See if there is any frame in the container
|
|
nsIFrame* frame = nextInFlow->mFrames.FirstChild();
|
|
if (frame) {
|
|
if (aIsInOverflow) {
|
|
*aIsInOverflow = false;
|
|
}
|
|
return frame;
|
|
}
|
|
// No frames in the principal list, try its overflow list
|
|
nsFrameList* overflowFrames = nextInFlow->GetOverflowFrames();
|
|
if (overflowFrames) {
|
|
if (aIsInOverflow) {
|
|
*aIsInOverflow = true;
|
|
}
|
|
return overflowFrames->FirstChild();
|
|
}
|
|
nextInFlow = static_cast<nsContainerFrame*>(nextInFlow->GetNextInFlow());
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* nsContainerFrame::PullNextInFlowChild(
|
|
ContinuationTraversingState& aState) {
|
|
bool isInOverflow;
|
|
nsIFrame* frame = GetNextInFlowChild(aState, &isInOverflow);
|
|
if (frame) {
|
|
nsContainerFrame* nextInFlow = aState.mNextInFlow;
|
|
if (isInOverflow) {
|
|
nsFrameList* overflowFrames = nextInFlow->GetOverflowFrames();
|
|
overflowFrames->RemoveFirstChild();
|
|
if (overflowFrames->IsEmpty()) {
|
|
nextInFlow->DestroyOverflowList();
|
|
}
|
|
} else {
|
|
nextInFlow->mFrames.RemoveFirstChild();
|
|
}
|
|
|
|
// Move the frame to the principal frame list of this container
|
|
mFrames.AppendFrame(this, frame);
|
|
// AppendFrame has reparented the frame, we need
|
|
// to reparent the frame view then.
|
|
nsContainerFrame::ReparentFrameView(frame, nextInFlow, this);
|
|
}
|
|
return frame;
|
|
}
|
|
|
|
/* static */
|
|
void nsContainerFrame::ReparentFloatsForInlineChild(nsIFrame* aOurLineContainer,
|
|
nsIFrame* aFrame,
|
|
bool aReparentSiblings) {
|
|
// XXXbz this would be better if it took a nsFrameList or a frame
|
|
// list slice....
|
|
NS_ASSERTION(aOurLineContainer->GetNextContinuation() ||
|
|
aOurLineContainer->GetPrevContinuation(),
|
|
"Don't call this when we have no continuation, it's a waste");
|
|
if (!aFrame) {
|
|
NS_ASSERTION(aReparentSiblings, "Why did we get called?");
|
|
return;
|
|
}
|
|
|
|
nsBlockFrame* frameBlock = nsLayoutUtils::GetFloatContainingBlock(aFrame);
|
|
if (!frameBlock || frameBlock == aOurLineContainer) {
|
|
return;
|
|
}
|
|
|
|
nsBlockFrame* ourBlock = do_QueryFrame(aOurLineContainer);
|
|
NS_ASSERTION(ourBlock, "Not a block, but broke vertically?");
|
|
|
|
while (true) {
|
|
ourBlock->ReparentFloats(aFrame, frameBlock, false);
|
|
|
|
if (!aReparentSiblings) return;
|
|
nsIFrame* next = aFrame->GetNextSibling();
|
|
if (!next) return;
|
|
if (next->GetParent() == aFrame->GetParent()) {
|
|
aFrame = next;
|
|
continue;
|
|
}
|
|
// This is paranoid and will hardly ever get hit ... but we can't actually
|
|
// trust that the frames in the sibling chain all have the same parent,
|
|
// because lazy reparenting may be going on. If we find a different
|
|
// parent we need to redo our analysis.
|
|
ReparentFloatsForInlineChild(aOurLineContainer, next, aReparentSiblings);
|
|
return;
|
|
}
|
|
}
|
|
|
|
bool nsContainerFrame::ResolvedOrientationIsVertical() {
|
|
StyleOrient orient = StyleDisplay()->mOrient;
|
|
switch (orient) {
|
|
case StyleOrient::Horizontal:
|
|
return false;
|
|
case StyleOrient::Vertical:
|
|
return true;
|
|
case StyleOrient::Inline:
|
|
return GetWritingMode().IsVertical();
|
|
case StyleOrient::Block:
|
|
return !GetWritingMode().IsVertical();
|
|
}
|
|
MOZ_ASSERT_UNREACHABLE("unexpected -moz-orient value");
|
|
return false;
|
|
}
|
|
|
|
StyleAlignFlags nsContainerFrame::CSSAlignmentForAbsPosChild(
|
|
const ReflowInput& aChildRI, LogicalAxis aLogicalAxis) const {
|
|
MOZ_ASSERT(aChildRI.mFrame->IsAbsolutelyPositioned(),
|
|
"This method should only be called for abspos children");
|
|
NS_ERROR(
|
|
"Child classes that use css box alignment for abspos children "
|
|
"should provide their own implementation of this method!");
|
|
|
|
// In the unexpected/unlikely event that this implementation gets invoked,
|
|
// just use "start" alignment.
|
|
return StyleAlignFlags::START;
|
|
}
|
|
|
|
nsOverflowContinuationTracker::nsOverflowContinuationTracker(
|
|
nsContainerFrame* aFrame, bool aWalkOOFFrames,
|
|
bool aSkipOverflowContainerChildren)
|
|
: mOverflowContList(nullptr),
|
|
mPrevOverflowCont(nullptr),
|
|
mSentry(nullptr),
|
|
mParent(aFrame),
|
|
mSkipOverflowContainerChildren(aSkipOverflowContainerChildren),
|
|
mWalkOOFFrames(aWalkOOFFrames) {
|
|
MOZ_ASSERT(aFrame, "null frame pointer");
|
|
SetupOverflowContList();
|
|
}
|
|
|
|
void nsOverflowContinuationTracker::SetupOverflowContList() {
|
|
MOZ_ASSERT(mParent, "null frame pointer");
|
|
MOZ_ASSERT(!mOverflowContList, "already have list");
|
|
nsContainerFrame* nif =
|
|
static_cast<nsContainerFrame*>(mParent->GetNextInFlow());
|
|
if (nif) {
|
|
mOverflowContList =
|
|
nif->GetPropTableFrames(nsContainerFrame::OverflowContainersProperty());
|
|
if (mOverflowContList) {
|
|
mParent = nif;
|
|
SetUpListWalker();
|
|
}
|
|
}
|
|
if (!mOverflowContList) {
|
|
mOverflowContList = mParent->GetPropTableFrames(
|
|
nsContainerFrame::ExcessOverflowContainersProperty());
|
|
if (mOverflowContList) {
|
|
SetUpListWalker();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function to walk past overflow continuations whose prev-in-flow
|
|
* isn't a normal child and to set mSentry and mPrevOverflowCont correctly.
|
|
*/
|
|
void nsOverflowContinuationTracker::SetUpListWalker() {
|
|
NS_ASSERTION(!mSentry && !mPrevOverflowCont,
|
|
"forgot to reset mSentry or mPrevOverflowCont");
|
|
if (mOverflowContList) {
|
|
nsIFrame* cur = mOverflowContList->FirstChild();
|
|
if (mSkipOverflowContainerChildren) {
|
|
while (cur && (cur->GetPrevInFlow()->GetStateBits() &
|
|
NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
while (cur && (!(cur->GetStateBits() & NS_FRAME_OUT_OF_FLOW) ==
|
|
mWalkOOFFrames)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
}
|
|
if (cur) {
|
|
mSentry = cur->GetPrevInFlow();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper function to step forward through the overflow continuations list.
|
|
* Sets mSentry and mPrevOverflowCont, skipping over OOF or non-OOF frames
|
|
* as appropriate. May only be called when we have already set up an
|
|
* mOverflowContList; mOverflowContList cannot be null.
|
|
*/
|
|
void nsOverflowContinuationTracker::StepForward() {
|
|
MOZ_ASSERT(mOverflowContList, "null list");
|
|
|
|
// Step forward
|
|
if (mPrevOverflowCont) {
|
|
mPrevOverflowCont = mPrevOverflowCont->GetNextSibling();
|
|
} else {
|
|
mPrevOverflowCont = mOverflowContList->FirstChild();
|
|
}
|
|
|
|
// Skip over oof or non-oof frames as appropriate
|
|
if (mSkipOverflowContainerChildren) {
|
|
nsIFrame* cur = mPrevOverflowCont->GetNextSibling();
|
|
while (cur &&
|
|
(!(cur->GetStateBits() & NS_FRAME_OUT_OF_FLOW) == mWalkOOFFrames)) {
|
|
mPrevOverflowCont = cur;
|
|
cur = cur->GetNextSibling();
|
|
}
|
|
}
|
|
|
|
// Set up the sentry
|
|
mSentry = (mPrevOverflowCont->GetNextSibling())
|
|
? mPrevOverflowCont->GetNextSibling()->GetPrevInFlow()
|
|
: nullptr;
|
|
}
|
|
|
|
nsresult nsOverflowContinuationTracker::Insert(nsIFrame* aOverflowCont,
|
|
nsReflowStatus& aReflowStatus) {
|
|
MOZ_ASSERT(aOverflowCont, "null frame pointer");
|
|
MOZ_ASSERT(!mSkipOverflowContainerChildren ||
|
|
mWalkOOFFrames ==
|
|
!!(aOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW),
|
|
"shouldn't insert frame that doesn't match walker type");
|
|
MOZ_ASSERT(aOverflowCont->GetPrevInFlow(),
|
|
"overflow containers must have a prev-in-flow");
|
|
|
|
nsresult rv = NS_OK;
|
|
bool reparented = false;
|
|
nsPresContext* presContext = aOverflowCont->PresContext();
|
|
bool addToList = !mSentry || aOverflowCont != mSentry->GetNextInFlow();
|
|
|
|
// If we have a list and aOverflowCont is already in it then don't try to
|
|
// add it again.
|
|
if (addToList && aOverflowCont->GetParent() == mParent &&
|
|
(aOverflowCont->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) &&
|
|
mOverflowContList && mOverflowContList->ContainsFrame(aOverflowCont)) {
|
|
addToList = false;
|
|
mPrevOverflowCont = aOverflowCont->GetPrevSibling();
|
|
}
|
|
|
|
if (addToList) {
|
|
if (aOverflowCont->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) {
|
|
// aOverflowCont is in some other overflow container list,
|
|
// steal it first
|
|
NS_ASSERTION(!(mOverflowContList &&
|
|
mOverflowContList->ContainsFrame(aOverflowCont)),
|
|
"overflow containers out of order");
|
|
rv = aOverflowCont->GetParent()->StealFrame(aOverflowCont);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
} else {
|
|
aOverflowCont->AddStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
|
|
}
|
|
if (!mOverflowContList) {
|
|
mOverflowContList = new (presContext->PresShell()) nsFrameList();
|
|
mParent->SetPropTableFrames(
|
|
mOverflowContList,
|
|
nsContainerFrame::ExcessOverflowContainersProperty());
|
|
SetUpListWalker();
|
|
}
|
|
if (aOverflowCont->GetParent() != mParent) {
|
|
nsContainerFrame::ReparentFrameView(aOverflowCont,
|
|
aOverflowCont->GetParent(), mParent);
|
|
reparented = true;
|
|
}
|
|
|
|
// If aOverflowCont has a prev/next-in-flow that might be in
|
|
// mOverflowContList we need to find it and insert after/before it to
|
|
// maintain the order amongst next-in-flows in this list.
|
|
nsIFrame* pif = aOverflowCont->GetPrevInFlow();
|
|
nsIFrame* nif = aOverflowCont->GetNextInFlow();
|
|
if ((pif && pif->GetParent() == mParent && pif != mPrevOverflowCont) ||
|
|
(nif && nif->GetParent() == mParent && mPrevOverflowCont)) {
|
|
for (nsFrameList::Enumerator e(*mOverflowContList); !e.AtEnd();
|
|
e.Next()) {
|
|
nsIFrame* f = e.get();
|
|
if (f == pif) {
|
|
mPrevOverflowCont = pif;
|
|
break;
|
|
}
|
|
if (f == nif) {
|
|
mPrevOverflowCont = f->GetPrevSibling();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
mOverflowContList->InsertFrame(mParent, mPrevOverflowCont, aOverflowCont);
|
|
aReflowStatus.SetNextInFlowNeedsReflow();
|
|
}
|
|
|
|
// If we need to reflow it, mark it dirty
|
|
if (aReflowStatus.NextInFlowNeedsReflow()) {
|
|
aOverflowCont->MarkSubtreeDirty();
|
|
}
|
|
|
|
// It's in our list, just step forward
|
|
StepForward();
|
|
NS_ASSERTION(
|
|
mPrevOverflowCont == aOverflowCont ||
|
|
(mSkipOverflowContainerChildren &&
|
|
(mPrevOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW) !=
|
|
(aOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW)),
|
|
"OverflowContTracker in unexpected state");
|
|
|
|
if (addToList) {
|
|
// Convert all non-overflow-container next-in-flows of aOverflowCont
|
|
// into overflow containers and move them to our overflow
|
|
// tracker. This preserves the invariant that the next-in-flows
|
|
// of an overflow container are also overflow containers.
|
|
nsIFrame* f = aOverflowCont->GetNextInFlow();
|
|
if (f && (!(f->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) ||
|
|
(!reparented && f->GetParent() == mParent) ||
|
|
(reparented && f->GetParent() != mParent))) {
|
|
if (!(f->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) {
|
|
rv = f->GetParent()->StealFrame(f);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
Insert(f, aReflowStatus);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void nsOverflowContinuationTracker::BeginFinish(nsIFrame* aChild) {
|
|
MOZ_ASSERT(aChild, "null ptr");
|
|
MOZ_ASSERT(aChild->GetNextInFlow(),
|
|
"supposed to call Finish *before* deleting next-in-flow!");
|
|
|
|
for (nsIFrame* f = aChild; f; f = f->GetNextInFlow()) {
|
|
// We'll update these in EndFinish after the next-in-flows are gone.
|
|
if (f == mPrevOverflowCont) {
|
|
mSentry = nullptr;
|
|
mPrevOverflowCont = nullptr;
|
|
break;
|
|
}
|
|
if (f == mSentry) {
|
|
mSentry = nullptr;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsOverflowContinuationTracker::EndFinish(nsIFrame* aChild) {
|
|
if (!mOverflowContList) {
|
|
return;
|
|
}
|
|
// Forget mOverflowContList if it was deleted.
|
|
nsFrameList* eoc = mParent->GetProperty(
|
|
nsContainerFrame::ExcessOverflowContainersProperty());
|
|
if (eoc != mOverflowContList) {
|
|
nsFrameList* oc = static_cast<nsFrameList*>(
|
|
mParent->GetProperty(nsContainerFrame::OverflowContainersProperty()));
|
|
if (oc != mOverflowContList) {
|
|
// mOverflowContList was deleted
|
|
mPrevOverflowCont = nullptr;
|
|
mSentry = nullptr;
|
|
mParent = aChild->GetParent();
|
|
mOverflowContList = nullptr;
|
|
SetupOverflowContList();
|
|
return;
|
|
}
|
|
}
|
|
// The list survived, update mSentry if needed.
|
|
if (!mSentry) {
|
|
if (!mPrevOverflowCont) {
|
|
SetUpListWalker();
|
|
} else {
|
|
mozilla::AutoRestore<nsIFrame*> saved(mPrevOverflowCont);
|
|
// step backward to make StepForward() use our current mPrevOverflowCont
|
|
mPrevOverflowCont = mPrevOverflowCont->GetPrevSibling();
|
|
StepForward();
|
|
}
|
|
}
|
|
}
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// Debugging
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
void nsContainerFrame::List(FILE* out, const char* aPrefix,
|
|
ListFlags aFlags) const {
|
|
nsCString str;
|
|
ListGeneric(str, aPrefix, aFlags);
|
|
ExtraContainerFrameInfo(str);
|
|
|
|
// Output the children
|
|
bool outputOneList = false;
|
|
ChildListIterator lists(this);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
if (outputOneList) {
|
|
str += aPrefix;
|
|
}
|
|
if (lists.CurrentID() != kPrincipalList) {
|
|
if (!outputOneList) {
|
|
str += "\n";
|
|
str += aPrefix;
|
|
}
|
|
str += nsPrintfCString("%s %p ",
|
|
mozilla::layout::ChildListName(lists.CurrentID()),
|
|
&GetChildList(lists.CurrentID()));
|
|
}
|
|
fprintf_stderr(out, "%s<\n", str.get());
|
|
str = "";
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* kid = childFrames.get();
|
|
// Verify the child frame's parent frame pointer is correct
|
|
NS_ASSERTION(kid->GetParent() == this, "bad parent frame pointer");
|
|
|
|
// Have the child frame list
|
|
nsCString pfx(aPrefix);
|
|
pfx += " ";
|
|
kid->List(out, pfx.get(), aFlags);
|
|
}
|
|
fprintf_stderr(out, "%s>\n", aPrefix);
|
|
outputOneList = true;
|
|
}
|
|
|
|
if (!outputOneList) {
|
|
fprintf_stderr(out, "%s<>\n", str.get());
|
|
}
|
|
}
|
|
|
|
void nsContainerFrame::ListWithMatchedRules(FILE* out,
|
|
const char* aPrefix) const {
|
|
fprintf_stderr(out, "%s%s\n", aPrefix, ListTag().get());
|
|
|
|
nsCString rulePrefix;
|
|
rulePrefix += aPrefix;
|
|
rulePrefix += " ";
|
|
ListMatchedRules(out, rulePrefix.get());
|
|
|
|
nsCString childPrefix;
|
|
childPrefix += aPrefix;
|
|
childPrefix += " ";
|
|
|
|
ChildListIterator lists(this);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* kid = childFrames.get();
|
|
kid->ListWithMatchedRules(out, childPrefix.get());
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsContainerFrame::ExtraContainerFrameInfo(nsACString& aTo) const {
|
|
(void)aTo;
|
|
}
|
|
|
|
#endif
|