gecko/layout/xul/nsRootBoxFrame.cpp
Wes Kocher 4bfe3c39fd Backed out 11 changesets (bug 1008917) for apparently introducing an intermittent failure of B2G Crashtest-2 on a CLOSED TREE
Backed out changeset e2ab653f688a (bug 1008917)
Backed out changeset b52154d8d900 (bug 1008917)
Backed out changeset 2ab5b01da4de (bug 1008917)
Backed out changeset f7a38df1d44f (bug 1008917)
Backed out changeset 80304bb9a572 (bug 1008917)
Backed out changeset 10ed89a302e9 (bug 1008917)
Backed out changeset 161c41991d46 (bug 1008917)
Backed out changeset 25b2475d2368 (bug 1008917)
Backed out changeset b8000b31277c (bug 1008917)
Backed out changeset 9afa5e7715e1 (bug 1008917)
Backed out changeset 5c380c21351f (bug 1008917)
2014-05-12 15:47:41 -07:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsHTMLParts.h"
#include "nsStyleConsts.h"
#include "nsGkAtoms.h"
#include "nsIPresShell.h"
#include "nsBoxFrame.h"
#include "nsStackLayout.h"
#include "nsIRootBox.h"
#include "nsIContent.h"
#include "nsXULTooltipListener.h"
#include "nsFrameManager.h"
#include "mozilla/BasicEvents.h"
using namespace mozilla;
// Interface IDs
//#define DEBUG_REFLOW
// static
nsIRootBox*
nsIRootBox::GetRootBox(nsIPresShell* aShell)
{
if (!aShell) {
return nullptr;
}
nsIFrame* rootFrame = aShell->FrameManager()->GetRootFrame();
if (!rootFrame) {
return nullptr;
}
if (rootFrame) {
rootFrame = rootFrame->GetFirstPrincipalChild();
}
nsIRootBox* rootBox = do_QueryFrame(rootFrame);
return rootBox;
}
class nsRootBoxFrame : public nsBoxFrame, public nsIRootBox {
public:
friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
nsRootBoxFrame(nsIPresShell* aShell, nsStyleContext *aContext);
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
virtual nsPopupSetFrame* GetPopupSetFrame() MOZ_OVERRIDE;
virtual void SetPopupSetFrame(nsPopupSetFrame* aPopupSet) MOZ_OVERRIDE;
virtual nsIContent* GetDefaultTooltip() MOZ_OVERRIDE;
virtual void SetDefaultTooltip(nsIContent* aTooltip) MOZ_OVERRIDE;
virtual nsresult AddTooltipSupport(nsIContent* aNode) MOZ_OVERRIDE;
virtual nsresult RemoveTooltipSupport(nsIContent* aNode) MOZ_OVERRIDE;
virtual nsresult AppendFrames(ChildListID aListID,
nsFrameList& aFrameList) MOZ_OVERRIDE;
virtual nsresult InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList) MOZ_OVERRIDE;
virtual nsresult RemoveFrame(ChildListID aListID,
nsIFrame* aOldFrame) MOZ_OVERRIDE;
virtual nsresult Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus) MOZ_OVERRIDE;
virtual nsresult HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) MOZ_OVERRIDE;
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists) MOZ_OVERRIDE;
/**
* Get the "type" of the frame
*
* @see nsGkAtoms::rootFrame
*/
virtual nsIAtom* GetType() const MOZ_OVERRIDE;
virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
{
// Override bogus IsFrameOfType in nsBoxFrame.
if (aFlags & (nsIFrame::eReplacedContainsBlock | nsIFrame::eReplaced))
return false;
return nsBoxFrame::IsFrameOfType(aFlags);
}
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
#endif
nsPopupSetFrame* mPopupSetFrame;
protected:
nsIContent* mDefaultTooltip;
};
//----------------------------------------------------------------------
nsIFrame*
NS_NewRootBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsRootBoxFrame (aPresShell, aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsRootBoxFrame)
nsRootBoxFrame::nsRootBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext):
nsBoxFrame(aShell, aContext, true)
{
mPopupSetFrame = nullptr;
nsCOMPtr<nsBoxLayout> layout;
NS_NewStackLayout(aShell, layout);
SetLayoutManager(layout);
}
nsresult
nsRootBoxFrame::AppendFrames(ChildListID aListID,
nsFrameList& aFrameList)
{
nsresult rv;
NS_ASSERTION(aListID == kPrincipalList, "unexpected child list ID");
NS_PRECONDITION(mFrames.IsEmpty(), "already have a child frame");
if (aListID != kPrincipalList) {
// We only support the principal child list.
rv = NS_ERROR_INVALID_ARG;
} else if (!mFrames.IsEmpty()) {
// We only allow a single child frame.
rv = NS_ERROR_FAILURE;
} else {
rv = nsBoxFrame::AppendFrames(aListID, aFrameList);
}
return rv;
}
nsresult
nsRootBoxFrame::InsertFrames(ChildListID aListID,
nsIFrame* aPrevFrame,
nsFrameList& aFrameList)
{
nsresult rv;
// Because we only support a single child frame inserting is the same
// as appending.
NS_PRECONDITION(!aPrevFrame, "unexpected previous sibling frame");
if (aPrevFrame) {
rv = NS_ERROR_UNEXPECTED;
} else {
rv = AppendFrames(aListID, aFrameList);
}
return rv;
}
nsresult
nsRootBoxFrame::RemoveFrame(ChildListID aListID,
nsIFrame* aOldFrame)
{
nsresult rv;
NS_ASSERTION(aListID == kPrincipalList, "unexpected child list ID");
if (aListID != kPrincipalList) {
// We only support the principal child list.
rv = NS_ERROR_INVALID_ARG;
} else if (aOldFrame == mFrames.FirstChild()) {
rv = nsBoxFrame::RemoveFrame(aListID, aOldFrame);
} else {
rv = NS_ERROR_FAILURE;
}
return rv;
}
#ifdef DEBUG_REFLOW
int32_t gReflows = 0;
#endif
nsresult
nsRootBoxFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsRootBoxFrame");
#ifdef DEBUG_REFLOW
gReflows++;
printf("----Reflow %d----\n", gReflows);
#endif
return nsBoxFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
void
nsRootBoxFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
// root boxes don't need a debug border/outline or a selection overlay...
// They *may* have a background propagated to them, so force creation
// of a background display list element.
DisplayBorderBackgroundOutline(aBuilder, aLists, true);
BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
}
nsresult
nsRootBoxFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
return NS_OK;
}
if (aEvent->message == NS_MOUSE_BUTTON_UP) {
nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
}
return NS_OK;
}
// REVIEW: The override here was doing nothing since nsBoxFrame is our
// parent class
nsIAtom*
nsRootBoxFrame::GetType() const
{
return nsGkAtoms::rootFrame;
}
nsPopupSetFrame*
nsRootBoxFrame::GetPopupSetFrame()
{
return mPopupSetFrame;
}
void
nsRootBoxFrame::SetPopupSetFrame(nsPopupSetFrame* aPopupSet)
{
// Under normal conditions this should only be called once. However,
// if something triggers ReconstructDocElementHierarchy, we will
// destroy this frame's child (the nsDocElementBoxFrame), but not this
// frame. This will cause the popupset to remove itself by calling
// |SetPopupSetFrame(nullptr)|, and then we'll be able to accept a new
// popupset. Since the anonymous content is associated with the
// nsDocElementBoxFrame, we'll get a new popupset when the new doc
// element box frame is created.
if (!mPopupSetFrame || !aPopupSet) {
mPopupSetFrame = aPopupSet;
} else {
NS_NOTREACHED("Popup set is already defined! Only 1 allowed.");
}
}
nsIContent*
nsRootBoxFrame::GetDefaultTooltip()
{
return mDefaultTooltip;
}
void
nsRootBoxFrame::SetDefaultTooltip(nsIContent* aTooltip)
{
mDefaultTooltip = aTooltip;
}
nsresult
nsRootBoxFrame::AddTooltipSupport(nsIContent* aNode)
{
NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
nsXULTooltipListener *listener = nsXULTooltipListener::GetInstance();
if (!listener)
return NS_ERROR_OUT_OF_MEMORY;
return listener->AddTooltipSupport(aNode);
}
nsresult
nsRootBoxFrame::RemoveTooltipSupport(nsIContent* aNode)
{
// XXjh yuck, I'll have to implement a way to get at
// the tooltip listener for a given node to make
// this work. Not crucial, we aren't removing
// tooltips from any nodes in the app just yet.
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_QUERYFRAME_HEAD(nsRootBoxFrame)
NS_QUERYFRAME_ENTRY(nsIRootBox)
NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
#ifdef DEBUG_FRAME_DUMP
nsresult
nsRootBoxFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("RootBox"), aResult);
}
#endif