292 lines
8.4 KiB
C++
292 lines
8.4 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 "nsDisplayList.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 : public nsBoxFrame, public nsIRootBox {
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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
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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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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::rootFrame
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*/
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virtual nsIAtom* GetType() const 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, true)
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{
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mPopupSetFrame = nullptr;
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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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#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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// REVIEW: The override here was doing nothing since nsBoxFrame is our
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// parent class
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nsIAtom*
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nsRootBoxFrame::GetType() const
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{
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return nsGkAtoms::rootFrame;
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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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