зеркало из https://github.com/mozilla/gecko-dev.git
2009 строки
72 KiB
C++
2009 строки
72 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "nsAbsoluteContainingBlock.h"
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#include "nsIDocument.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.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 "nsIPresShell.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 "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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#ifdef DEBUG
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#undef NOISY
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#else
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#undef NOISY
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#endif
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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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NS_IMPL_FRAMEARENA_HELPERS(nsContainerFrame)
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nsContainerFrame::~nsContainerFrame()
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{
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}
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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
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nsContainerFrame::Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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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
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nsContainerFrame::SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList)
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{
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MOZ_ASSERT(mFrames.IsEmpty(),
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"unexpected second call to SetInitialChildList");
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MOZ_ASSERT(aListID == kPrincipalList, "unexpected child list");
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#ifdef DEBUG
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nsFrame::VerifyDirtyBitSet(aChildList);
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#endif
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mFrames.SetFrames(aChildList);
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}
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void
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nsContainerFrame::AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList)
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{
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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if (aFrameList.NotEmpty()) {
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mFrames.AppendFrames(this, aFrameList);
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// Ask the parent frame to reflow me.
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if (aListID == kPrincipalList)
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{
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eTreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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}
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}
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void
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nsContainerFrame::InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList)
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{
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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 (aFrameList.NotEmpty()) {
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// Insert frames after aPrevFrame
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mFrames.InsertFrames(this, aPrevFrame, aFrameList);
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if (aListID == kPrincipalList)
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{
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eTreeChange,
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NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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}
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}
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void
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nsContainerFrame::RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame)
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{
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MOZ_ASSERT(aListID == kPrincipalList || aListID == kNoReflowPrincipalList,
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"unexpected child list");
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// Loop and destroy aOldFrame and all of its continuations.
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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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bool generateReflowCommand = true;
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if (kNoReflowPrincipalList == aListID) {
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generateReflowCommand = false;
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}
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nsIPresShell* shell = PresContext()->PresShell();
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nsContainerFrame* lastParent = nullptr;
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while (aOldFrame) {
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//XXXfr probably should use StealFrame here. I'm not sure if we need to
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// check the overflow lists atm, but we'll need a prescontext lookup
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// for overflow containers once we can split abspos elements with
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// inline containing blocks.
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nsIFrame* oldFrameNextContinuation = aOldFrame->GetNextContinuation();
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nsContainerFrame* parent = aOldFrame->GetParent();
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parent->StealFrame(aOldFrame, true);
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aOldFrame->Destroy();
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aOldFrame = oldFrameNextContinuation;
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if (parent != lastParent && generateReflowCommand) {
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shell->FrameNeedsReflow(parent, nsIPresShell::eTreeChange,
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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
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nsContainerFrame::DestroyAbsoluteFrames(nsIFrame* aDestructRoot)
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{
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if (IsAbsoluteContainer()) {
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GetAbsoluteContainingBlock()->DestroyFrames(this, aDestructRoot);
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MarkAsNotAbsoluteContainingBlock();
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}
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}
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void
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nsContainerFrame::SafelyDestroyFrameListProp(nsIFrame* aDestructRoot,
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nsIPresShell* aPresShell,
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FramePropertyTable* aPropTable,
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const FramePropertyDescriptor* aProp)
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{
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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 =
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static_cast<nsFrameList*>(aPropTable->Get(this, aProp))) {
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nsIFrame* frame = frameList->RemoveFirstChild();
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if (MOZ_LIKELY(frame)) {
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frame->DestroyFrom(aDestructRoot);
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} else {
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aPropTable->Remove(this, 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
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nsContainerFrame::DestroyFrom(nsIFrame* aDestructRoot)
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{
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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);
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// Destroy frames on the principal child list.
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mFrames.DestroyFramesFrom(aDestructRoot);
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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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nsIPresShell* shell = pc->PresShell();
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FramePropertyTable* props = pc->PropertyTable();
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SafelyDestroyFrameListProp(aDestructRoot, shell, props, OverflowProperty());
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MOZ_ASSERT(IsFrameOfType(nsIFrame::eCanContainOverflowContainers) ||
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!(props->Get(this, nsContainerFrame::OverflowContainersProperty()) ||
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props->Get(this, nsContainerFrame::ExcessOverflowContainersProperty())),
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"this type of frame should't have overflow containers");
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SafelyDestroyFrameListProp(aDestructRoot, shell, props,
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OverflowContainersProperty());
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SafelyDestroyFrameListProp(aDestructRoot, shell, props,
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ExcessOverflowContainersProperty());
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nsSplittableFrame::DestroyFrom(aDestructRoot);
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}
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/////////////////////////////////////////////////////////////////////////////
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// Child frame enumeration
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const nsFrameList&
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nsContainerFrame::GetChildList(ChildListID aListID) const
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{
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// We only know about the principal child list and the overflow lists.
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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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default:
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return nsSplittableFrame::GetChildList(aListID);
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}
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}
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static void AppendIfNonempty(const nsIFrame* aFrame,
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FramePropertyTable* aPropTable,
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const FramePropertyDescriptor* aProperty,
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nsTArray<nsIFrame::ChildList>* aLists,
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nsIFrame::ChildListID aListID)
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{
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nsFrameList* list = static_cast<nsFrameList*>(
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aPropTable->Get(aFrame, aProperty));
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if (list) {
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list->AppendIfNonempty(aLists, aListID);
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}
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}
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void
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nsContainerFrame::GetChildLists(nsTArray<ChildList>* aLists) const
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{
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mFrames.AppendIfNonempty(aLists, kPrincipalList);
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FramePropertyTable* propTable = PresContext()->PropertyTable();
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::AppendIfNonempty(this, propTable, OverflowProperty(),
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aLists, kOverflowList);
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if (IsFrameOfType(nsIFrame::eCanContainOverflowContainers)) {
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::AppendIfNonempty(this, propTable, OverflowContainersProperty(),
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aLists, kOverflowContainersList);
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::AppendIfNonempty(this, propTable, ExcessOverflowContainersProperty(),
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aLists, kExcessOverflowContainersList);
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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
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nsContainerFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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DisplayBorderBackgroundOutline(aBuilder, aLists);
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BuildDisplayListForNonBlockChildren(aBuilder, aDirtyRect, aLists);
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}
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void
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nsContainerFrame::BuildDisplayListForNonBlockChildren(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists,
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uint32_t aFlags)
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{
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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, aDirtyRect, set, aFlags);
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kid = kid->GetNextSibling();
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}
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}
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/* virtual */ void
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nsContainerFrame::ChildIsDirty(nsIFrame* aChild)
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{
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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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bool
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nsContainerFrame::IsLeaf() const
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{
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return false;
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}
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nsIFrame::FrameSearchResult
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nsContainerFrame::PeekOffsetNoAmount(bool aForward, int32_t* aOffset)
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{
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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
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nsContainerFrame::PeekOffsetCharacter(bool aForward, int32_t* aOffset,
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bool aRespectClusters)
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{
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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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static nsresult
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ReparentFrameViewTo(nsIFrame* aFrame,
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nsViewManager* aViewManager,
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nsView* aNewParentView,
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nsView* aOldParentView)
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{
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// XXX What to do about placeholder views for "position: fixed" elements?
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// They should be reparented too.
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// Does aFrame have a view?
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if (aFrame->HasView()) {
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#ifdef MOZ_XUL
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if (aFrame->GetType() == nsGkAtoms::menuPopupFrame) {
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// This view must be parented by the root view, don't reparent it.
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return NS_OK;
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}
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#endif
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nsView* view = aFrame->GetView();
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// Verify that the current parent view is what we think it is
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//nsView* parentView;
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//NS_ASSERTION(parentView == aOldParentView, "unexpected parent view");
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aViewManager->RemoveChild(view);
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// The view will remember the Z-order and other attributes that have been set on it.
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nsView* insertBefore = nsLayoutUtils::FindSiblingViewFor(aNewParentView, aFrame);
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aViewManager->InsertChild(aNewParentView, view, insertBefore, insertBefore != nullptr);
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} else {
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nsIFrame::ChildListIterator lists(aFrame);
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for (; !lists.IsDone(); lists.Next()) {
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// Iterate the child frames, and check each child frame to see if it has
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// a view
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nsFrameList::Enumerator childFrames(lists.CurrentList());
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for (; !childFrames.AtEnd(); childFrames.Next()) {
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ReparentFrameViewTo(childFrames.get(), aViewManager,
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aNewParentView, aOldParentView);
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}
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}
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}
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return NS_OK;
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}
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void
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nsContainerFrame::CreateViewForFrame(nsIFrame* aFrame,
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bool aForce)
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{
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if (aFrame->HasView()) {
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return;
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}
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// If we don't yet have a view, see if we need a view
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if (!aForce && !aFrame->NeedsView()) {
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// don't need a view
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return;
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}
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nsView* parentView = aFrame->GetParent()->GetClosestView();
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NS_ASSERTION(parentView, "no parent with view");
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nsViewManager* viewManager = parentView->GetViewManager();
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NS_ASSERTION(viewManager, "null view manager");
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// Create a view
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nsView* view = viewManager->CreateView(aFrame->GetRect(), parentView);
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SyncFrameViewProperties(aFrame->PresContext(), aFrame, nullptr, view);
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nsView* insertBefore = nsLayoutUtils::FindSiblingViewFor(parentView, aFrame);
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// we insert this view 'above' the insertBefore view, unless insertBefore is null,
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// in which case we want to call with aAbove == false to insert at the beginning
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// in document order
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viewManager->InsertChild(parentView, view, insertBefore, insertBefore != nullptr);
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// REVIEW: Don't create a widget for fixed-pos elements anymore.
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// ComputeRepaintRegionForCopy will calculate the right area to repaint
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// when we scroll.
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// Reparent views on any child frames (or their descendants) to this
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// view. We can just call ReparentFrameViewTo on this frame because
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// we know this frame has no view, so it will crawl the children. Also,
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// we know that any descendants with views must have 'parentView' as their
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// parent view.
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ReparentFrameViewTo(aFrame, viewManager, view, parentView);
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// Remember our view
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aFrame->SetView(view);
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NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
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("nsContainerFrame::CreateViewForFrame: frame=%p view=%p",
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aFrame));
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}
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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
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nsContainerFrame::PositionFrameView(nsIFrame* aKidFrame)
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{
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nsIFrame* parentFrame = aKidFrame->GetParent();
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if (!aKidFrame->HasView() || !parentFrame)
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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
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nsContainerFrame::ReparentFrameView(nsIFrame* aChildFrame,
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nsIFrame* aOldParentFrame,
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nsIFrame* aNewParentFrame)
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{
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NS_PRECONDITION(aChildFrame, "null child frame pointer");
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NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
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NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
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NS_PRECONDITION(aOldParentFrame != aNewParentFrame, "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();
|
|
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) {
|
|
// They're not so we need to reparent any child views
|
|
return ReparentFrameViewTo(aChildFrame, oldParentView->GetViewManager(), newParentView,
|
|
oldParentView);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::ReparentFrameViewList(const nsFrameList& aChildFrameList,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame)
|
|
{
|
|
NS_PRECONDITION(aChildFrameList.NotEmpty(), "empty child frame list");
|
|
NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
|
|
NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
|
|
NS_PRECONDITION(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 NS_OK;
|
|
}
|
|
|
|
// 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()) {
|
|
ReparentFrameViewTo(e.get(), viewManager, newParentView, oldParentView);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
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_sheet;
|
|
// popups aren't toplevel so they're not handled here
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SyncWindowProperties(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsView* aView,
|
|
nsRenderingContext* aRC)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
if (!aView || !nsCSSRendering::IsCanvasFrame(aFrame) || !aView->HasWidget())
|
|
return;
|
|
|
|
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 || !rootElement->IsXUL()) {
|
|
// 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.
|
|
// nsCSSFrameConstructor::ConstructRootFrame constructs root
|
|
// scrollframes whenever the root element is not a XUL element, so
|
|
// we test for that here. We can't just call
|
|
// presShell->GetRootScrollFrame() since that might not have
|
|
// been constructed yet.
|
|
// 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.
|
|
return;
|
|
}
|
|
|
|
nsIFrame *rootFrame = aPresContext->PresShell()->FrameConstructor()->GetRootElementStyleFrame();
|
|
if (!rootFrame)
|
|
return;
|
|
|
|
nsTransparencyMode mode = nsLayoutUtils::GetFrameTransparency(aFrame, rootFrame);
|
|
nsIWidget* viewWidget = aView->GetWidget();
|
|
viewWidget->SetTransparencyMode(mode);
|
|
windowWidget->SetWindowShadowStyle(rootFrame->StyleUIReset()->mWindowShadow);
|
|
|
|
if (!aRC)
|
|
return;
|
|
|
|
nsBoxLayoutState aState(aPresContext, aRC);
|
|
nsSize minSize = rootFrame->GetMinSize(aState);
|
|
nsSize maxSize = rootFrame->GetMaxSize(aState);
|
|
|
|
SetSizeConstraints(aPresContext, windowWidget, minSize, maxSize);
|
|
#endif
|
|
}
|
|
|
|
void nsContainerFrame::SetSizeConstraints(nsPresContext* aPresContext,
|
|
nsIWidget* aWidget,
|
|
const nsSize& aMinSize,
|
|
const nsSize& aMaxSize)
|
|
{
|
|
nsIntSize devMinSize(aPresContext->AppUnitsToDevPixels(aMinSize.width),
|
|
aPresContext->AppUnitsToDevPixels(aMinSize.height));
|
|
nsIntSize devMaxSize(aMaxSize.width == NS_INTRINSICSIZE ? NS_MAXSIZE :
|
|
aPresContext->AppUnitsToDevPixels(aMaxSize.width),
|
|
aMaxSize.height == NS_INTRINSICSIZE ? 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.
|
|
nsIntSize windowSize = aWidget->ClientToWindowSize(nsIntSize(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,
|
|
uint32_t aFlags)
|
|
{
|
|
if (!aView) {
|
|
return;
|
|
}
|
|
|
|
// Make sure the view is sized and positioned correctly
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aFrame);
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_SIZE_VIEW)) {
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
|
|
vm->ResizeView(aView, aVisualOverflowArea, true);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SyncFrameViewProperties(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsStyleContext* aStyleContext,
|
|
nsView* aView,
|
|
uint32_t aFlags)
|
|
{
|
|
NS_ASSERTION(!aStyleContext || aFrame->StyleContext() == aStyleContext,
|
|
"Wrong style context for frame?");
|
|
|
|
if (!aView) {
|
|
return;
|
|
}
|
|
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
|
|
if (nullptr == aStyleContext) {
|
|
aStyleContext = aFrame->StyleContext();
|
|
}
|
|
|
|
// Make sure visibility is correct. This only affects nsSubdocumentFrame.
|
|
if (0 == (aFlags & NS_FRAME_NO_VISIBILITY) &&
|
|
!aFrame->SupportsVisibilityHidden()) {
|
|
// See if the view should be hidden or visible
|
|
vm->SetViewVisibility(aView,
|
|
aStyleContext->StyleVisibility()->IsVisible()
|
|
? nsViewVisibility_kShow : nsViewVisibility_kHide);
|
|
}
|
|
|
|
// See if the frame is being relatively positioned or absolutely
|
|
// positioned
|
|
bool isPositioned = aFrame->IsPositioned();
|
|
|
|
int32_t zIndex = 0;
|
|
bool autoZIndex = false;
|
|
|
|
if (!isPositioned) {
|
|
autoZIndex = true;
|
|
} else {
|
|
// Make sure z-index is correct
|
|
const nsStylePosition* position = aStyleContext->StylePosition();
|
|
|
|
if (position->mZIndex.GetUnit() == eStyleUnit_Integer) {
|
|
zIndex = position->mZIndex.GetIntValue();
|
|
} else if (position->mZIndex.GetUnit() == eStyleUnit_Auto) {
|
|
autoZIndex = true;
|
|
}
|
|
}
|
|
|
|
vm->SetViewZIndex(aView, autoZIndex, zIndex);
|
|
}
|
|
|
|
static nscoord GetCoord(const nsStyleCoord& aCoord, nscoord aIfNotCoord)
|
|
{
|
|
if (aCoord.ConvertsToLength()) {
|
|
return nsRuleNode::ComputeCoordPercentCalc(aCoord, 0);
|
|
}
|
|
return aIfNotCoord;
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::DoInlineIntrinsicISize(nsRenderingContext *aRenderingContext,
|
|
InlineIntrinsicISizeData *aData,
|
|
nsLayoutUtils::IntrinsicISizeType aType)
|
|
{
|
|
if (GetPrevInFlow())
|
|
return; // Already added.
|
|
|
|
NS_PRECONDITION(aType == nsLayoutUtils::MIN_ISIZE ||
|
|
aType == nsLayoutUtils::PREF_ISIZE, "bad type");
|
|
|
|
mozilla::css::Side startSide, endSide;
|
|
if (StyleVisibility()->mDirection == NS_STYLE_DIRECTION_LTR) {
|
|
startSide = NS_SIDE_LEFT;
|
|
endSide = NS_SIDE_RIGHT;
|
|
} else {
|
|
startSide = NS_SIDE_RIGHT;
|
|
endSide = NS_SIDE_LEFT;
|
|
}
|
|
|
|
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 == NS_STYLE_BOX_DECORATION_BREAK_SLICE;
|
|
if (!GetPrevContinuation()) {
|
|
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->currentLine += 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;
|
|
}
|
|
|
|
const nsLineList_iterator* savedLine = aData->line;
|
|
nsIFrame* const savedLineContainer = aData->lineContainer;
|
|
|
|
nsContainerFrame *lastInFlow;
|
|
for (nsContainerFrame *nif = this; nif;
|
|
nif = static_cast<nsContainerFrame*>(nif->GetNextInFlow())) {
|
|
if (aData->currentLine == 0) {
|
|
aData->currentLine = clonePBM;
|
|
}
|
|
for (nsIFrame *kid = nif->mFrames.FirstChild(); kid;
|
|
kid = kid->GetNextSibling()) {
|
|
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->line = nullptr;
|
|
aData->lineContainer = nullptr;
|
|
|
|
lastInFlow = nif;
|
|
}
|
|
|
|
aData->line = savedLine;
|
|
aData->lineContainer = 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->currentLine += endPBM;
|
|
}
|
|
}
|
|
|
|
/* virtual */
|
|
LogicalSize
|
|
nsContainerFrame::ComputeAutoSize(nsRenderingContext* aRenderingContext,
|
|
WritingMode aWM,
|
|
const LogicalSize& aCBSize,
|
|
nscoord aAvailableISize,
|
|
const LogicalSize& aMargin,
|
|
const LogicalSize& aBorder,
|
|
const LogicalSize& aPadding,
|
|
bool aShrinkWrap)
|
|
{
|
|
LogicalSize result(aWM, 0xdeadbeef, NS_UNCONSTRAINEDSIZE);
|
|
nscoord availBased = aAvailableISize - aMargin.ISize(aWM) -
|
|
aBorder.ISize(aWM) - aPadding.ISize(aWM);
|
|
// replaced elements always shrink-wrap
|
|
if (aShrinkWrap || IsFrameOfType(eReplaced)) {
|
|
// don't bother setting it if the result won't be used
|
|
const nsStyleCoord& inlineStyleCoord =
|
|
aWM.IsVertical() ? StylePosition()->mHeight : StylePosition()->mWidth;
|
|
if (inlineStyleCoord.GetUnit() == eStyleUnit_Auto) {
|
|
result.ISize(aWM) = ShrinkWidthToFit(aRenderingContext, availBased);
|
|
}
|
|
} 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);
|
|
|
|
// XXX todo: make this aware of vertical writing modes
|
|
uint8_t captionSide = StyleTableBorder()->mCaptionSide;
|
|
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 width to the width of
|
|
// the table. Grow if our min-width is bigger than that, but not
|
|
// larger than the containing block width. (It would really be nice
|
|
// to transmit that information another way, so we could grow up to
|
|
// the table's available width, 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;
|
|
}
|
|
|
|
/**
|
|
* Invokes the WillReflow() function, positions the frame and its view (if
|
|
* requested), and then calls Reflow(). If the reflow succeeds and the child
|
|
* frame is complete, deletes any next-in-flows using DeleteNextInFlowChild()
|
|
*/
|
|
void
|
|
nsContainerFrame::ReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
const WritingMode& aWM,
|
|
const LogicalPoint& aPos,
|
|
nscoord aContainerWidth,
|
|
uint32_t aFlags,
|
|
nsReflowStatus& aStatus,
|
|
nsOverflowContinuationTracker* aTracker)
|
|
{
|
|
NS_PRECONDITION(aReflowState.frame == aKidFrame, "bad reflow state");
|
|
if (aWM.IsVerticalRL() || (!aWM.IsVertical() && !aWM.IsBidiLTR())) {
|
|
NS_ASSERTION(aContainerWidth != NS_UNCONSTRAINEDSIZE,
|
|
"FinishReflowChild with unconstrained container width!");
|
|
}
|
|
|
|
// Send the WillReflow() notification, and position the child frame
|
|
// and its view if requested
|
|
aKidFrame->WillReflow(aPresContext);
|
|
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetPosition(aWM, aPos, aContainerWidth);
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aKidFrame);
|
|
}
|
|
|
|
// Reflow the child frame
|
|
aKidFrame->Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// If the child frame is complete, delete any next-in-flows,
|
|
// but only if the NO_DELETE_NEXT_IN_FLOW flag isn't set.
|
|
if (NS_FRAME_IS_FULLY_COMPLETE(aStatus) &&
|
|
!(aFlags & NS_FRAME_NO_DELETE_NEXT_IN_FLOW_CHILD)) {
|
|
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,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nscoord aX,
|
|
nscoord aY,
|
|
uint32_t aFlags,
|
|
nsReflowStatus& aStatus,
|
|
nsOverflowContinuationTracker* aTracker)
|
|
{
|
|
NS_PRECONDITION(aReflowState.frame == aKidFrame, "bad reflow state");
|
|
|
|
// Send the WillReflow() notification, and position the child frame
|
|
// and its view if requested
|
|
aKidFrame->WillReflow(aPresContext);
|
|
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetPosition(nsPoint(aX, aY));
|
|
}
|
|
|
|
if (0 == (aFlags & NS_FRAME_NO_MOVE_VIEW)) {
|
|
PositionFrameView(aKidFrame);
|
|
}
|
|
|
|
// Reflow the child frame
|
|
aKidFrame->Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// If the child frame is complete, delete any next-in-flows,
|
|
// but only if the NO_DELETE_NEXT_IN_FLOW flag isn't set.
|
|
if (NS_FRAME_IS_FULLY_COMPLETE(aStatus) &&
|
|
!(aFlags & NS_FRAME_NO_DELETE_NEXT_IN_FLOW_CHILD)) {
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The second half of frame reflow. Does the following:
|
|
* - sets the frame's bounds
|
|
* - sizes and positions (if requested) the frame's view. If the frame's final
|
|
* position differs from the current position and the frame itself does not
|
|
* have a view, then any child frames with views are positioned so they stay
|
|
* in sync
|
|
* - sets the view's visibility, opacity, content transparency, and clip
|
|
* - invoked the DidReflow() function
|
|
*
|
|
* Flags:
|
|
* NS_FRAME_NO_MOVE_FRAME - don't move the frame. aX and aY are ignored in this
|
|
* case. Also implies NS_FRAME_NO_MOVE_VIEW
|
|
* NS_FRAME_NO_MOVE_VIEW - don't position the frame's view. Set this if you
|
|
* don't want to automatically sync the frame and view
|
|
* NS_FRAME_NO_SIZE_VIEW - don't size the frame's view
|
|
*/
|
|
void
|
|
nsContainerFrame::FinishReflowChild(nsIFrame* aKidFrame,
|
|
nsPresContext* aPresContext,
|
|
const nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState* aReflowState,
|
|
const WritingMode& aWM,
|
|
const LogicalPoint& aPos,
|
|
nscoord aContainerWidth,
|
|
uint32_t aFlags)
|
|
{
|
|
if (aWM.IsVerticalRL() || (!aWM.IsVertical() && !aWM.IsBidiLTR())) {
|
|
NS_ASSERTION(aContainerWidth != NS_UNCONSTRAINEDSIZE,
|
|
"FinishReflowChild with unconstrained container width!");
|
|
}
|
|
|
|
nsPoint curOrigin = aKidFrame->GetPosition();
|
|
WritingMode outerWM = aDesiredSize.GetWritingMode();
|
|
LogicalSize convertedSize = aDesiredSize.Size(outerWM).ConvertTo(aWM,
|
|
outerWM);
|
|
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetRect(aWM, LogicalRect(aWM, aPos, convertedSize),
|
|
aContainerWidth);
|
|
} 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 & NS_FRAME_NO_MOVE_VIEW) && 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, aReflowState, nsDidReflowStatus::FINISHED);
|
|
}
|
|
|
|
//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 nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState* aReflowState,
|
|
nscoord aX,
|
|
nscoord aY,
|
|
uint32_t aFlags)
|
|
{
|
|
nsPoint curOrigin = aKidFrame->GetPosition();
|
|
|
|
if (NS_FRAME_NO_MOVE_FRAME != (aFlags & NS_FRAME_NO_MOVE_FRAME)) {
|
|
aKidFrame->SetRect(nsRect(aX, aY, aDesiredSize.Width(), aDesiredSize.Height()));
|
|
} else {
|
|
aKidFrame->SetSize(nsSize(aDesiredSize.Width(), aDesiredSize.Height()));
|
|
}
|
|
|
|
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 & NS_FRAME_NO_MOVE_VIEW) &&
|
|
(curOrigin.x != aX || curOrigin.y != aY)) {
|
|
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, aReflowState, nsDidReflowStatus::FINISHED);
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::ReflowOverflowContainerChildren(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsOverflowAreas& aOverflowRects,
|
|
uint32_t aFlags,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
NS_PRECONDITION(aPresContext, "null pointer");
|
|
|
|
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.
|
|
nsFrameList* selfExcessOCFrames =
|
|
RemovePropTableFrames(ExcessOverflowContainersProperty());
|
|
if (selfExcessOCFrames) {
|
|
if (overflowContainers) {
|
|
overflowContainers->AppendFrames(nullptr, *selfExcessOCFrames);
|
|
selfExcessOCFrames->Delete(aPresContext->PresShell());
|
|
} else {
|
|
overflowContainers = selfExcessOCFrames;
|
|
SetPropTableFrames(overflowContainers, OverflowContainersProperty());
|
|
}
|
|
}
|
|
if (!overflowContainers) {
|
|
return; // nothing to reflow
|
|
}
|
|
|
|
nsOverflowContinuationTracker tracker(this, false, false);
|
|
bool shouldReflowAllKids = aReflowState.ShouldReflowAllKids();
|
|
|
|
for (nsIFrame* frame = overflowContainers->FirstChild(); frame;
|
|
frame = frame->GetNextSibling()) {
|
|
if (frame->GetPrevInFlow()->GetParent() != GetPrevInFlow()) {
|
|
// frame's prevInFlow has moved, skip reflowing this frame;
|
|
// it will get reflowed once it's been placed
|
|
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();
|
|
nscoord containerWidth = aReflowState.AvailableSize(wm).Width(wm);
|
|
LogicalRect prevRect = prevInFlow->GetLogicalRect(wm, containerWidth);
|
|
|
|
// Initialize reflow params
|
|
LogicalSize availSpace(wm, prevRect.ISize(wm),
|
|
aReflowState.AvailableSize(wm).BSize(wm));
|
|
nsHTMLReflowMetrics desiredSize(aReflowState);
|
|
nsHTMLReflowState frameState(aPresContext, aReflowState,
|
|
frame, availSpace);
|
|
nsReflowStatus frameStatus;
|
|
|
|
// Reflow
|
|
LogicalPoint pos(wm, prevRect.IStart(wm), 0);
|
|
ReflowChild(frame, aPresContext, desiredSize, frameState,
|
|
wm, pos, containerWidth, 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, containerWidth, aFlags);
|
|
|
|
// Handle continuations
|
|
if (!NS_FRAME_IS_FULLY_COMPLETE(frameStatus)) {
|
|
if (frame->GetStateBits() & NS_FRAME_OUT_OF_FLOW) {
|
|
// Abspos frames can't cause their parent to be incomplete,
|
|
// only overflow incomplete.
|
|
NS_FRAME_SET_OVERFLOW_INCOMPLETE(frameStatus);
|
|
}
|
|
else {
|
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(frameStatus),
|
|
"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 & NS_FRAME_REFLOW_NEXTINFLOW,
|
|
"Someone forgot a REFLOW_NEXTINFLOW flag");
|
|
nif = aPresContext->PresShell()->FrameConstructor()->
|
|
CreateContinuingFrame(aPresContext, 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);
|
|
}
|
|
NS_MergeReflowStatusInto(&aStatus, 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 (aReflowState.mFloatManager) {
|
|
nsBlockFrame::RecoverFloatsFor(frame, *aReflowState.mFloatManager,
|
|
aReflowState.GetWritingMode(),
|
|
aReflowState.ComputedWidth());
|
|
}
|
|
}
|
|
ConsiderChildOverflow(aOverflowRects, frame);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::DisplayOverflowContainers(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsFrameList* overflowconts = GetPropTableFrames(OverflowContainersProperty());
|
|
if (overflowconts) {
|
|
for (nsIFrame* frame = overflowconts->FirstChild(); frame;
|
|
frame = frame->GetNextSibling()) {
|
|
BuildDisplayListForChild(aBuilder, frame, aDirtyRect, aLists);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool
|
|
TryRemoveFrame(nsIFrame* aFrame, FramePropertyTable* aPropTable,
|
|
const FramePropertyDescriptor* aProp, nsIFrame* aChildToRemove)
|
|
{
|
|
nsFrameList* list = static_cast<nsFrameList*>(aPropTable->Get(aFrame, aProp));
|
|
if (list && list->StartRemoveFrame(aChildToRemove)) {
|
|
// aChildToRemove *may* have been removed from this list.
|
|
if (list->IsEmpty()) {
|
|
aPropTable->Remove(aFrame, aProp);
|
|
list->Delete(aFrame->PresContext()->PresShell());
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsresult
|
|
nsContainerFrame::StealFrame(nsIFrame* aChild,
|
|
bool aForceNormal)
|
|
{
|
|
#ifdef DEBUG
|
|
if (!mFrames.ContainsFrame(aChild)) {
|
|
nsFrameList* list = GetOverflowFrames();
|
|
if (!list || !list->ContainsFrame(aChild)) {
|
|
FramePropertyTable* propTable = PresContext()->PropertyTable();
|
|
list = static_cast<nsFrameList*>(
|
|
propTable->Get(this, OverflowContainersProperty()));
|
|
if (!list || !list->ContainsFrame(aChild)) {
|
|
list = static_cast<nsFrameList*>(
|
|
propTable->Get(this, ExcessOverflowContainersProperty()));
|
|
MOZ_ASSERT(list && list->ContainsFrame(aChild), "aChild isn't our child"
|
|
" or on a frame list not supported by StealFrame");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool removed;
|
|
if ((aChild->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)
|
|
&& !aForceNormal) {
|
|
FramePropertyTable* propTable = PresContext()->PropertyTable();
|
|
// Try removing from the overflow container list.
|
|
removed = ::TryRemoveFrame(this, propTable, OverflowContainersProperty(),
|
|
aChild);
|
|
if (!removed) {
|
|
// It must be in the excess overflow container list.
|
|
removed = ::TryRemoveFrame(this, propTable,
|
|
ExcessOverflowContainersProperty(),
|
|
aChild);
|
|
}
|
|
} else {
|
|
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();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_POSTCONDITION(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(GetType() != nsGkAtoms::blockFrame, "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)
|
|
{
|
|
NS_PRECONDITION(GetType() != nsGkAtoms::blockFrame,
|
|
"you should have called nsBlockFrame::CreateContinuationFor instead");
|
|
NS_PRECONDITION(mFrames.ContainsFrame(aFrame), "expected an in-flow child frame");
|
|
|
|
nsPresContext* pc = PresContext();
|
|
nsIFrame* nextInFlow = aFrame->GetNextInFlow();
|
|
if (nullptr == nextInFlow) {
|
|
// Create a continuation frame for the child frame and insert it
|
|
// into our child list.
|
|
nextInFlow = pc->PresShell()->FrameConstructor()->
|
|
CreateContinuingFrame(pc, 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
|
|
NS_PRECONDITION(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) {
|
|
nsAutoTArray<nsIFrame*, 8> frames;
|
|
for (nsIFrame* f = nextNextInFlow; f; f = f->GetNextInFlow()) {
|
|
frames.AppendElement(f);
|
|
}
|
|
for (int32_t i = frames.Length() - 1; i >= 0; --i) {
|
|
nsIFrame* delFrame = frames.ElementAt(i);
|
|
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();
|
|
|
|
NS_POSTCONDITION(!prevInFlow->GetNextInFlow(), "non null next-in-flow");
|
|
}
|
|
|
|
/**
|
|
* Set the frames on the overflow list
|
|
*/
|
|
void
|
|
nsContainerFrame::SetOverflowFrames(const nsFrameList& aOverflowFrames)
|
|
{
|
|
NS_PRECONDITION(aOverflowFrames.NotEmpty(), "Shouldn't be called");
|
|
|
|
nsPresContext* pc = PresContext();
|
|
nsFrameList* newList = new (pc->PresShell()) nsFrameList(aOverflowFrames);
|
|
|
|
pc->PropertyTable()->Set(this, OverflowProperty(), newList);
|
|
}
|
|
|
|
nsFrameList*
|
|
nsContainerFrame::GetPropTableFrames(const FramePropertyDescriptor* aProperty) const
|
|
{
|
|
FramePropertyTable* propTable = PresContext()->PropertyTable();
|
|
return static_cast<nsFrameList*>(propTable->Get(this, aProperty));
|
|
}
|
|
|
|
nsFrameList*
|
|
nsContainerFrame::RemovePropTableFrames(const FramePropertyDescriptor* aProperty)
|
|
{
|
|
FramePropertyTable* propTable = PresContext()->PropertyTable();
|
|
return static_cast<nsFrameList*>(propTable->Remove(this, aProperty));
|
|
}
|
|
|
|
void
|
|
nsContainerFrame::SetPropTableFrames(nsFrameList* aFrameList,
|
|
const FramePropertyDescriptor* aProperty)
|
|
{
|
|
NS_PRECONDITION(aProperty && aFrameList, "null ptr");
|
|
NS_PRECONDITION(
|
|
(aProperty != nsContainerFrame::OverflowContainersProperty() &&
|
|
aProperty != nsContainerFrame::ExcessOverflowContainersProperty()) ||
|
|
IsFrameOfType(nsIFrame::eCanContainOverflowContainers),
|
|
"this type of frame can't have overflow containers");
|
|
MOZ_ASSERT(!GetPropTableFrames(aProperty));
|
|
PresContext()->PropertyTable()->Set(this, aProperty, aFrameList);
|
|
}
|
|
|
|
/**
|
|
* Push aFromChild and its next siblings to the next-in-flow. Change the
|
|
* geometric parent of each frame that's pushed. If there is no next-in-flow
|
|
* the frames are placed on the overflow list (and the geometric parent is
|
|
* left unchanged).
|
|
*
|
|
* Updates the next-in-flow's child count. Does <b>not</b> update the
|
|
* pusher's child count.
|
|
*
|
|
* @param aFromChild the first child frame to push. It is disconnected from
|
|
* aPrevSibling
|
|
* @param aPrevSibling aFromChild's previous sibling. Must not be null. It's
|
|
* an error to push a parent's first child frame
|
|
*/
|
|
void
|
|
nsContainerFrame::PushChildren(nsIFrame* aFromChild,
|
|
nsIFrame* aPrevSibling)
|
|
{
|
|
NS_PRECONDITION(aFromChild, "null pointer");
|
|
NS_PRECONDITION(aPrevSibling, "pushing first child");
|
|
NS_PRECONDITION(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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Moves any frames on the overflow lists (the prev-in-flow's overflow list and
|
|
* the receiver's overflow list) to the child list.
|
|
*
|
|
* Updates this frame's child count and content mapping.
|
|
*
|
|
* @return true if any frames were moved and false otherwise
|
|
*/
|
|
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() || GetType() == nsGkAtoms::tableFrame,
|
|
"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;
|
|
}
|
|
|
|
bool
|
|
nsContainerFrame::DrainSelfOverflowList()
|
|
{
|
|
AutoFrameListPtr overflowFrames(PresContext(), StealOverflowFrames());
|
|
if (overflowFrames) {
|
|
NS_ASSERTION(mFrames.NotEmpty(), "overflow list w/o frames");
|
|
mFrames.AppendFrames(nullptr, *overflowFrames);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
nsOverflowContinuationTracker::nsOverflowContinuationTracker(nsContainerFrame* aFrame,
|
|
bool aWalkOOFFrames,
|
|
bool aSkipOverflowContainerChildren)
|
|
: mOverflowContList(nullptr),
|
|
mPrevOverflowCont(nullptr),
|
|
mSentry(nullptr),
|
|
mParent(aFrame),
|
|
mSkipOverflowContainerChildren(aSkipOverflowContainerChildren),
|
|
mWalkOOFFrames(aWalkOOFFrames)
|
|
{
|
|
NS_PRECONDITION(aFrame, "null frame pointer");
|
|
SetupOverflowContList();
|
|
}
|
|
|
|
void
|
|
nsOverflowContinuationTracker::SetupOverflowContList()
|
|
{
|
|
NS_PRECONDITION(mParent, "null frame pointer");
|
|
NS_PRECONDITION(!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()
|
|
{
|
|
NS_PRECONDITION(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)
|
|
{
|
|
NS_PRECONDITION(aOverflowCont, "null frame pointer");
|
|
NS_PRECONDITION(!mSkipOverflowContainerChildren || mWalkOOFFrames ==
|
|
!!(aOverflowCont->GetStateBits() & NS_FRAME_OUT_OF_FLOW),
|
|
"shouldn't insert frame that doesn't match walker type");
|
|
NS_PRECONDITION(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 |= NS_FRAME_REFLOW_NEXTINFLOW;
|
|
}
|
|
|
|
// If we need to reflow it, mark it dirty
|
|
if (aReflowStatus & NS_FRAME_REFLOW_NEXTINFLOW)
|
|
aOverflowCont->AddStateBits(NS_FRAME_IS_DIRTY);
|
|
|
|
// 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 continuations of aOverflowCont
|
|
// into overflow containers and move them to our overflow
|
|
// tracker. This preserves the invariant that the next-continuations
|
|
// of an overflow container are also overflow containers.
|
|
nsIFrame* f = aOverflowCont->GetNextContinuation();
|
|
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)
|
|
{
|
|
NS_PRECONDITION(aChild, "null ptr");
|
|
NS_PRECONDITION(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.
|
|
nsPresContext* pc = aChild->PresContext();
|
|
FramePropertyTable* propTable = pc->PropertyTable();
|
|
nsFrameList* eoc = static_cast<nsFrameList*>(propTable->Get(mParent,
|
|
nsContainerFrame::ExcessOverflowContainersProperty()));
|
|
if (eoc != mOverflowContList) {
|
|
nsFrameList* oc = static_cast<nsFrameList*>(propTable->Get(mParent,
|
|
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, uint32_t aFlags) const
|
|
{
|
|
nsCString str;
|
|
ListGeneric(str, aPrefix, aFlags);
|
|
|
|
// 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());
|
|
}
|
|
}
|
|
#endif
|