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2e869d8f3d
nsReflowStatus::IsEmpty() assertions are added after DISPLAY_REFLOW in the beginning of the Reflow(). A few Reflow() implementations have Reset() calls at the end which are left in place by this patch (with an explanatory comment added to each). These ending Reset()s are only needed for cases where a non-splittable frame passes its own nsReflowStatus to a child's reflow method. Just in case the child leaves a "not fully complete" value in the nsReflowStatus, the non-splittable parent frame must clear out the nsReflowStatus before returning, so that its own parent doesn't then try to split it. MozReview-Commit-ID: 6Jj3jfMAqj4 --HG-- extra : rebase_source : e1fe6a775ad97e16a6d7cc224634ff962ccb0fbf
278 lines
8.2 KiB
C++
278 lines
8.2 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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#include "nsHTMLParts.h"
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#include "nsStyleConsts.h"
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#include "nsGkAtoms.h"
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#include "nsIPresShell.h"
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#include "nsBoxFrame.h"
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#include "nsStackLayout.h"
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#include "nsIRootBox.h"
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#include "nsIContent.h"
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#include "nsXULTooltipListener.h"
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#include "nsFrameManager.h"
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#include "mozilla/BasicEvents.h"
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using namespace mozilla;
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// Interface IDs
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//#define DEBUG_REFLOW
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// static
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nsIRootBox*
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nsIRootBox::GetRootBox(nsIPresShell* aShell)
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{
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if (!aShell) {
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return nullptr;
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}
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nsIFrame* rootFrame = aShell->FrameManager()->GetRootFrame();
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if (!rootFrame) {
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return nullptr;
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}
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if (rootFrame) {
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rootFrame = rootFrame->PrincipalChildList().FirstChild();
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}
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nsIRootBox* rootBox = do_QueryFrame(rootFrame);
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return rootBox;
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}
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class nsRootBoxFrame final : public nsBoxFrame, public nsIRootBox
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{
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public:
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friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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explicit nsRootBoxFrame(nsStyleContext* aContext);
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsRootBoxFrame)
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virtual nsPopupSetFrame* GetPopupSetFrame() override;
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virtual void SetPopupSetFrame(nsPopupSetFrame* aPopupSet) override;
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virtual nsIContent* GetDefaultTooltip() override;
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virtual void SetDefaultTooltip(nsIContent* aTooltip) override;
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virtual nsresult AddTooltipSupport(nsIContent* aNode) override;
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virtual nsresult RemoveTooltipSupport(nsIContent* aNode) override;
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virtual void AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList) override;
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virtual void InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList) override;
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virtual void RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame) override;
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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virtual nsresult HandleEvent(nsPresContext* aPresContext,
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WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus) override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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virtual bool IsFrameOfType(uint32_t aFlags) const override
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{
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// Override bogus IsFrameOfType in nsBoxFrame.
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if (aFlags & (nsIFrame::eReplacedContainsBlock | nsIFrame::eReplaced))
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return false;
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return nsBoxFrame::IsFrameOfType(aFlags);
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}
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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nsPopupSetFrame* mPopupSetFrame;
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protected:
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nsIContent* mDefaultTooltip;
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};
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//----------------------------------------------------------------------
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nsContainerFrame*
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NS_NewRootBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsRootBoxFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsRootBoxFrame)
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nsRootBoxFrame::nsRootBoxFrame(nsStyleContext* aContext)
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: nsBoxFrame(aContext, kClassID, true)
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, mPopupSetFrame(nullptr)
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, mDefaultTooltip(nullptr)
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{
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nsCOMPtr<nsBoxLayout> layout;
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NS_NewStackLayout(layout);
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SetXULLayoutManager(layout);
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}
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void
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nsRootBoxFrame::AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList)
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{
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MOZ_ASSERT(aListID == kPrincipalList, "unexpected child list ID");
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MOZ_ASSERT(mFrames.IsEmpty(), "already have a child frame");
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nsBoxFrame::AppendFrames(aListID, aFrameList);
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}
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void
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nsRootBoxFrame::InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList)
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{
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// Because we only support a single child frame inserting is the same
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// as appending.
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MOZ_ASSERT(!aPrevFrame, "unexpected previous sibling frame");
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AppendFrames(aListID, aFrameList);
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}
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void
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nsRootBoxFrame::RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame)
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{
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NS_ASSERTION(aListID == kPrincipalList, "unexpected child list ID");
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if (aOldFrame == mFrames.FirstChild()) {
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nsBoxFrame::RemoveFrame(aListID, aOldFrame);
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} else {
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MOZ_CRASH("unknown aOldFrame");
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}
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}
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#ifdef DEBUG_REFLOW
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int32_t gReflows = 0;
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#endif
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void
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nsRootBoxFrame::Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsRootBoxFrame");
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MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
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#ifdef DEBUG_REFLOW
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gReflows++;
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printf("----Reflow %d----\n", gReflows);
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#endif
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return nsBoxFrame::Reflow(aPresContext, aDesiredSize, aReflowInput, aStatus);
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}
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void
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nsRootBoxFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists)
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{
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if (mContent && mContent->GetProperty(nsGkAtoms::DisplayPortMargins)) {
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// The XUL document's root element may have displayport margins set in
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// ChromeProcessController::InitializeRoot, and we should to supply the
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// base rect.
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nsRect displayPortBase =
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aBuilder->GetDirtyRect().Intersect(nsRect(nsPoint(0, 0), GetSize()));
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nsLayoutUtils::SetDisplayPortBase(mContent, displayPortBase);
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}
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// root boxes don't need a debug border/outline or a selection overlay...
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// They *may* have a background propagated to them, so force creation
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// of a background display list element.
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DisplayBorderBackgroundOutline(aBuilder, aLists, true);
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BuildDisplayListForChildren(aBuilder, aLists);
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}
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nsresult
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nsRootBoxFrame::HandleEvent(nsPresContext* aPresContext,
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WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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NS_ENSURE_ARG_POINTER(aEventStatus);
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if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
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return NS_OK;
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}
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if (aEvent->mMessage == eMouseUp) {
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nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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}
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return NS_OK;
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}
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nsPopupSetFrame*
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nsRootBoxFrame::GetPopupSetFrame()
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{
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return mPopupSetFrame;
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}
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void
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nsRootBoxFrame::SetPopupSetFrame(nsPopupSetFrame* aPopupSet)
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{
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// Under normal conditions this should only be called once. However,
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// if something triggers ReconstructDocElementHierarchy, we will
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// destroy this frame's child (the nsDocElementBoxFrame), but not this
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// frame. This will cause the popupset to remove itself by calling
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// |SetPopupSetFrame(nullptr)|, and then we'll be able to accept a new
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// popupset. Since the anonymous content is associated with the
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// nsDocElementBoxFrame, we'll get a new popupset when the new doc
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// element box frame is created.
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if (!mPopupSetFrame || !aPopupSet) {
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mPopupSetFrame = aPopupSet;
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} else {
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NS_NOTREACHED("Popup set is already defined! Only 1 allowed.");
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}
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}
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nsIContent*
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nsRootBoxFrame::GetDefaultTooltip()
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{
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return mDefaultTooltip;
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}
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void
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nsRootBoxFrame::SetDefaultTooltip(nsIContent* aTooltip)
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{
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mDefaultTooltip = aTooltip;
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}
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nsresult
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nsRootBoxFrame::AddTooltipSupport(nsIContent* aNode)
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{
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NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
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nsXULTooltipListener *listener = nsXULTooltipListener::GetInstance();
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if (!listener)
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return NS_ERROR_OUT_OF_MEMORY;
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return listener->AddTooltipSupport(aNode);
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}
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nsresult
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nsRootBoxFrame::RemoveTooltipSupport(nsIContent* aNode)
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{
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// XXjh yuck, I'll have to implement a way to get at
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// the tooltip listener for a given node to make
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// this work. Not crucial, we aren't removing
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// tooltips from any nodes in the app just yet.
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_QUERYFRAME_HEAD(nsRootBoxFrame)
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NS_QUERYFRAME_ENTRY(nsIRootBox)
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NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
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#ifdef DEBUG_FRAME_DUMP
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nsresult
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nsRootBoxFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("RootBox"), aResult);
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}
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#endif
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