gecko-dev/layout/generic/nsSubDocumentFrame.cpp

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C++
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/* -*- 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
* 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/. */
/*
* rendering object for replaced elements that contain a document, such
* as <frame>, <iframe>, and some <object>s
*/
#include "nsSubDocumentFrame.h"
#include "gfxPrefs.h"
#include "mozilla/layout/RenderFrameParent.h"
#include "nsCOMPtr.h"
#include "nsGenericHTMLElement.h"
#include "nsGenericHTMLFrameElement.h"
Bug 760331: Coalesce data for inline style across nodes. r=bz This patch enables sharing of an nsAttrValue's MiscContainer between nodes for style rules. MiscContainers of type eCSSStyleRule are now refcounted (with some clever struct packing to ensure that the amount of memory allocated for MiscContainer remains unchanged on 32 and 64 bit). This infrastructure can be used to share most MiscContainer types in the future if we find advantages to sharing other types than just eCSSStyleRuley. A cache mapping strings to MiscContainers has been added to nsHTMLCSSStyleSheet. MiscContainers can be shared between nsAttrValues when one nsAttrValue is SetTo another nsAttrValue or when there is a cache hit in this cache. This patch also adds the ability to tell a style rule that it belongs to an nsHTMLCSSStyleSheet, with appropriate accessor functions to separate that from the existing case of belonging to an nsCSSStyleSheet. The primary use case is to reduce memory use for pages that have lots of inline style attributes with the same value. This can happen easily with large pages that are automatically generated. An (admittedly pathological) testcase in Bug 686975 sees over 250 MB of memory savings with this change. Reusing the same MiscContainer for multiple nodes saves the overhead of maintaining separate copies of the string containing the serialized value of the style attribute and of creating separate style rules for each node. Eliminating duplicate style rules enables further savings in layout through style context sharing. The testcase sees the amount of memory used by style contexts go from over 250 MB to 10 KB. Because the cache is based on the text value of the style attribute, it will not handle attributes that have different text values but are parsed into identical style rules. We also do not attempt to share MiscContainers when the node's base URI differs from the document URI. The effect of these limitations is expected to be low.
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#include "nsAttrValueInlines.h"
#include "nsIDocShell.h"
#include "nsIContentViewer.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIDocument.h"
#include "nsView.h"
#include "nsViewManager.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsFrameSetFrame.h"
#include "nsIDOMHTMLFrameElement.h"
#include "nsIScrollable.h"
#include "nsNameSpaceManager.h"
#include "nsDisplayList.h"
#include "nsIScrollableFrame.h"
#include "nsIObjectLoadingContent.h"
#include "nsLayoutUtils.h"
#include "FrameLayerBuilder.h"
#include "nsPluginFrame.h"
#include "nsContentUtils.h"
#include "nsIPermissionManager.h"
#include "nsServiceManagerUtils.h"
#include "nsIDOMMutationEvent.h"
#include "mozilla/Preferences.h"
using namespace mozilla;
using mozilla::layout::RenderFrameParent;
static bool sShowPreviousPage = true;
static nsIDocument*
GetDocumentFromView(nsView* aView)
{
NS_PRECONDITION(aView, "");
nsViewManager* vm = aView->GetViewManager();
nsIPresShell* ps = vm ? vm->GetPresShell() : nullptr;
return ps ? ps->GetDocument() : nullptr;
}
nsSubDocumentFrame::nsSubDocumentFrame(nsStyleContext* aContext)
: nsAtomicContainerFrame(aContext)
, mOuterView(nullptr)
, mInnerView(nullptr)
, mIsInline(false)
, mPostedReflowCallback(false)
, mDidCreateDoc(false)
, mCallingShow(false)
{
}
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#ifdef ACCESSIBILITY
a11y::AccType
nsSubDocumentFrame::AccessibleType()
{
return a11y::eOuterDocType;
}
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#endif
NS_QUERYFRAME_HEAD(nsSubDocumentFrame)
NS_QUERYFRAME_ENTRY(nsSubDocumentFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsAtomicContainerFrame)
class AsyncFrameInit : public Runnable
{
public:
explicit AsyncFrameInit(nsIFrame* aFrame) : mFrame(aFrame) {}
NS_IMETHOD Run() override
{
PROFILER_LABEL("mozilla", "AsyncFrameInit::Run", js::ProfileEntry::Category::OTHER);
if (mFrame.IsAlive()) {
static_cast<nsSubDocumentFrame*>(mFrame.GetFrame())->ShowViewer();
}
return NS_OK;
}
private:
WeakFrame mFrame;
};
static void
InsertViewsInReverseOrder(nsView* aSibling, nsView* aParent);
static void
EndSwapDocShellsForViews(nsView* aView);
void
nsSubDocumentFrame::Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow)
{
// determine if we are a <frame> or <iframe>
nsCOMPtr<nsIDOMHTMLFrameElement> frameElem = do_QueryInterface(aContent);
mIsInline = frameElem ? false : true;
static bool addedShowPreviousPage = false;
if (!addedShowPreviousPage) {
// If layout.show_previous_page is true then during loading of a new page we
// will draw the previous page if the new page has painting suppressed.
Preferences::AddBoolVarCache(&sShowPreviousPage, "layout.show_previous_page", true);
addedShowPreviousPage = true;
}
nsAtomicContainerFrame::Init(aContent, aParent, aPrevInFlow);
// CreateView() creates this frame's view, stored in mOuterView. It needs to
// be created first since it's the parent of the inner view, stored in
// mInnerView.
CreateView();
EnsureInnerView();
// Set the primary frame now so that nsDocumentViewer::FindContainerView
// called from within EndSwapDocShellsForViews below can find it if needed.
aContent->SetPrimaryFrame(this);
// If we have a detached subdoc's root view on our frame loader, re-insert
// it into the view tree. This happens when we've been reframed, and
// ensures the presentation persists across reframes. If the frame element
// has changed documents however, we blow away the presentation.
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
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RefPtr<nsFrameLoader> frameloader = FrameLoader();
if (frameloader) {
nsCOMPtr<nsIDocument> oldContainerDoc;
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nsIFrame* detachedFrame =
frameloader->GetDetachedSubdocFrame(getter_AddRefs(oldContainerDoc));
frameloader->SetDetachedSubdocFrame(nullptr, nullptr);
MOZ_ASSERT(oldContainerDoc || !detachedFrame);
if (oldContainerDoc) {
nsView* detachedView =
detachedFrame ? detachedFrame->GetView() : nullptr;
if (detachedView && oldContainerDoc == aContent->OwnerDoc()) {
// Restore stashed presentation.
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::InsertViewsInReverseOrder(detachedView, mInnerView);
::EndSwapDocShellsForViews(mInnerView->GetFirstChild());
} else {
// Presentation is for a different document, don't restore it.
frameloader->Hide();
}
}
}
nsContentUtils::AddScriptRunner(new AsyncFrameInit(this));
}
void
nsSubDocumentFrame::ShowViewer()
{
if (mCallingShow) {
return;
}
if (!PresContext()->IsDynamic()) {
// We let the printing code take care of loading the document; just
// create the inner view for it to use.
(void) EnsureInnerView();
} else {
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
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RefPtr<nsFrameLoader> frameloader = FrameLoader();
if (frameloader) {
CSSIntSize margin = GetMarginAttributes();
AutoWeakFrame weakThis(this);
mCallingShow = true;
const nsAttrValue* attrValue =
GetContent()->AsElement()->GetParsedAttr(nsGkAtoms::scrolling);
int32_t scrolling =
nsGenericHTMLFrameElement::MapScrollingAttribute(attrValue);
bool didCreateDoc =
frameloader->Show(margin.width, margin.height,
scrolling, scrolling, this);
if (!weakThis.IsAlive()) {
return;
}
mCallingShow = false;
mDidCreateDoc = didCreateDoc;
}
}
}
nsIFrame*
nsSubDocumentFrame::GetSubdocumentRootFrame()
{
if (!mInnerView)
return nullptr;
nsView* subdocView = mInnerView->GetFirstChild();
return subdocView ? subdocView->GetFrame() : nullptr;
}
nsIPresShell*
nsSubDocumentFrame::GetSubdocumentPresShellForPainting(uint32_t aFlags)
{
if (!mInnerView)
return nullptr;
nsView* subdocView = mInnerView->GetFirstChild();
if (!subdocView)
return nullptr;
nsIPresShell* presShell = nullptr;
nsIFrame* subdocRootFrame = subdocView->GetFrame();
if (subdocRootFrame) {
presShell = subdocRootFrame->PresContext()->PresShell();
}
// If painting is suppressed in the presshell, we try to look for a better
// presshell to use.
if (!presShell || (presShell->IsPaintingSuppressed() &&
!(aFlags & IGNORE_PAINT_SUPPRESSION))) {
// During page transition mInnerView will sometimes have two children, the
// first being the new page that may not have any frame, and the second
// being the old page that will probably have a frame.
nsView* nextView = subdocView->GetNextSibling();
nsIFrame* frame = nullptr;
if (nextView) {
frame = nextView->GetFrame();
}
if (frame) {
nsIPresShell* ps = frame->PresContext()->PresShell();
if (!presShell || (ps && !ps->IsPaintingSuppressed() && sShowPreviousPage)) {
subdocView = nextView;
subdocRootFrame = frame;
presShell = ps;
}
}
if (!presShell) {
// If we don't have a frame we use this roundabout way to get the pres shell.
if (!mFrameLoader)
return nullptr;
nsCOMPtr<nsIDocShell> docShell;
mFrameLoader->GetDocShell(getter_AddRefs(docShell));
if (!docShell)
return nullptr;
presShell = docShell->GetPresShell();
}
}
return presShell;
}
ScreenIntSize
nsSubDocumentFrame::GetSubdocumentSize()
{
if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
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RefPtr<nsFrameLoader> frameloader = FrameLoader();
if (frameloader) {
nsCOMPtr<nsIDocument> oldContainerDoc;
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nsIFrame* detachedFrame =
frameloader->GetDetachedSubdocFrame(getter_AddRefs(oldContainerDoc));
nsView* view = detachedFrame ? detachedFrame->GetView() : nullptr;
if (view) {
nsSize size = view->GetBounds().Size();
nsPresContext* presContext = detachedFrame->PresContext();
return ScreenIntSize(presContext->AppUnitsToDevPixels(size.width),
presContext->AppUnitsToDevPixels(size.height));
}
}
// Pick some default size for now. Using 10x10 because that's what the
// code used to do.
return ScreenIntSize(10, 10);
} else {
nsSize docSizeAppUnits;
nsPresContext* presContext = PresContext();
nsCOMPtr<nsIDOMHTMLFrameElement> frameElem =
do_QueryInterface(GetContent());
if (frameElem) {
docSizeAppUnits = GetSize();
} else {
docSizeAppUnits = GetContentRect().Size();
}
// Adjust subdocument size, according to 'object-fit' and the
// subdocument's intrinsic size and ratio.
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
nsRect destRect =
nsLayoutUtils::ComputeObjectDestRect(nsRect(nsPoint(), docSizeAppUnits),
subDocRoot->GetIntrinsicSize(),
subDocRoot->GetIntrinsicRatio(),
StylePosition());
docSizeAppUnits = destRect.Size();
}
return ScreenIntSize(presContext->AppUnitsToDevPixels(docSizeAppUnits.width),
presContext->AppUnitsToDevPixels(docSizeAppUnits.height));
}
}
static void
WrapBackgroundColorInOwnLayer(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame,
nsDisplayList* aList)
{
nsDisplayList tempItems;
nsDisplayItem* item;
while ((item = aList->RemoveBottom()) != nullptr) {
if (item->GetType() == nsDisplayItem::TYPE_BACKGROUND_COLOR) {
nsDisplayList tmpList;
tmpList.AppendToTop(item);
item = new (aBuilder) nsDisplayOwnLayer(aBuilder, aFrame, &tmpList, aBuilder->CurrentActiveScrolledRoot());
}
tempItems.AppendToTop(item);
}
aList->AppendToTop(&tempItems);
}
void
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
if (!IsVisibleForPainting(aBuilder))
return;
nsFrameLoader* frameLoader = FrameLoader();
RenderFrameParent* rfp = nullptr;
if (frameLoader) {
rfp = frameLoader->GetCurrentRenderFrame();
}
// If we are pointer-events:none then we don't need to HitTest background
bool pointerEventsNone =
StyleUserInterface()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE;
if (!aBuilder->IsForEventDelivery() || !pointerEventsNone) {
nsDisplayListCollection decorations;
DisplayBorderBackgroundOutline(aBuilder, decorations);
if (rfp) {
// Wrap background colors of <iframe>s with remote subdocuments in their
// own layer so we generate a ColorLayer. This is helpful for optimizing
// compositing; we can skip compositing the ColorLayer when the
// remote content is opaque.
WrapBackgroundColorInOwnLayer(aBuilder, this, decorations.BorderBackground());
}
decorations.MoveTo(aLists);
}
if (aBuilder->IsForEventDelivery() && pointerEventsNone) {
return;
}
// If we're passing pointer events to children then we have to descend into
// subdocuments no matter what, to determine which parts are transparent for
// hit-testing or event regions.
bool needToDescend = aBuilder->GetDescendIntoSubdocuments();
if (!mInnerView || !needToDescend) {
return;
}
if (rfp) {
rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
return;
}
nsCOMPtr<nsIPresShell> presShell =
GetSubdocumentPresShellForPainting(
aBuilder->IsIgnoringPaintSuppression() ? IGNORE_PAINT_SUPPRESSION : 0);
if (!presShell) {
return;
}
nsIFrame* subdocRootFrame = presShell->GetRootFrame();
nsPresContext* presContext = presShell->GetPresContext();
int32_t parentAPD = PresContext()->AppUnitsPerDevPixel();
int32_t subdocAPD = presContext->AppUnitsPerDevPixel();
nsRect dirty;
bool haveDisplayPort = false;
bool ignoreViewportScrolling = false;
nsIFrame* savedIgnoreScrollFrame = nullptr;
if (subdocRootFrame) {
// get the dirty rect relative to the root frame of the subdoc
dirty = aDirtyRect + GetOffsetToCrossDoc(subdocRootFrame);
// and convert into the appunits of the subdoc
dirty = dirty.ScaleToOtherAppUnitsRoundOut(parentAPD, subdocAPD);
if (nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame()) {
nsIScrollableFrame* rootScrollableFrame = presShell->GetRootScrollFrameAsScrollable();
MOZ_ASSERT(rootScrollableFrame);
// Use a copy, so the dirty rect doesn't get modified to the display port.
nsRect copy = dirty;
haveDisplayPort = rootScrollableFrame->DecideScrollableLayer(aBuilder,
&copy, /* aAllowCreateDisplayPort = */ true);
if (!gfxPrefs::LayoutUseContainersForRootFrames()) {
haveDisplayPort = false;
}
ignoreViewportScrolling = presShell->IgnoringViewportScrolling();
if (ignoreViewportScrolling) {
savedIgnoreScrollFrame = aBuilder->GetIgnoreScrollFrame();
aBuilder->SetIgnoreScrollFrame(rootScrollFrame);
}
}
aBuilder->EnterPresShell(subdocRootFrame, pointerEventsNone);
} else {
dirty = aDirtyRect;
}
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
if (ShouldClipSubdocument()) {
clipState.ClipContainingBlockDescendantsToContentBox(aBuilder, this);
}
nsIScrollableFrame *sf = presShell->GetRootScrollFrameAsScrollable();
bool constructResolutionItem = subdocRootFrame &&
(presShell->GetResolution() != 1.0);
bool constructZoomItem = subdocRootFrame && parentAPD != subdocAPD;
bool needsOwnLayer = false;
if (constructResolutionItem ||
constructZoomItem ||
haveDisplayPort ||
presContext->IsRootContentDocument() ||
(sf && sf->IsScrollingActive(aBuilder)))
{
needsOwnLayer = true;
}
if (!needsOwnLayer && aBuilder->IsBuildingLayerEventRegions() &&
nsLayoutUtils::HasDocumentLevelListenersForApzAwareEvents(presShell))
{
needsOwnLayer = true;
}
nsDisplayList childItems;
{
DisplayListClipState::AutoSaveRestore nestedClipState(aBuilder);
if (needsOwnLayer) {
// Clear current clip. There's no point in propagating it down, since
// the layer we will construct will be clipped by the current clip.
// In fact for nsDisplayZoom propagating it down would be incorrect since
// nsDisplayZoom changes the meaning of appunits.
nestedClipState.Clear();
}
if (subdocRootFrame) {
nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
nsDisplayListBuilder::AutoCurrentScrollParentIdSetter idSetter(
aBuilder,
ignoreViewportScrolling && rootScrollFrame && rootScrollFrame->GetContent()
? nsLayoutUtils::FindOrCreateIDFor(rootScrollFrame->GetContent())
: aBuilder->GetCurrentScrollParentId());
aBuilder->SetAncestorHasApzAwareEventHandler(false);
subdocRootFrame->
BuildDisplayListForStackingContext(aBuilder, dirty, &childItems);
}
if (!aBuilder->IsForEventDelivery()) {
// If we are going to use a displayzoom below then any items we put under
// it need to have underlying frames from the subdocument. So we need to
// calculate the bounds based on which frame will be the underlying frame
// for the canvas background color item.
nsRect bounds = GetContentRectRelativeToSelf() +
aBuilder->ToReferenceFrame(this);
if (subdocRootFrame) {
bounds = bounds.ScaleToOtherAppUnitsRoundOut(parentAPD, subdocAPD);
}
// If we are in print preview/page layout we want to paint the grey
// background behind the page, not the canvas color. The canvas color gets
// painted on the page itself.
if (nsLayoutUtils::NeedsPrintPreviewBackground(presContext)) {
presShell->AddPrintPreviewBackgroundItem(
*aBuilder, childItems, subdocRootFrame ? subdocRootFrame : this,
bounds);
} else {
// Invoke AutoBuildingDisplayList to ensure that the correct dirty rect
// is used to compute the visible rect if AddCanvasBackgroundColorItem
// creates a display item.
nsIFrame* frame = subdocRootFrame ? subdocRootFrame : this;
nsDisplayListBuilder::AutoBuildingDisplayList
building(aBuilder, frame, dirty, true);
// Add the canvas background color to the bottom of the list. This
// happens after we've built the list so that AddCanvasBackgroundColorItem
// can monkey with the contents if necessary.
uint32_t flags = nsIPresShell::FORCE_DRAW;
presShell->AddCanvasBackgroundColorItem(
*aBuilder, childItems, frame, bounds, NS_RGBA(0,0,0,0), flags);
}
}
}
if (subdocRootFrame) {
aBuilder->LeavePresShell(subdocRootFrame, &childItems);
if (ignoreViewportScrolling) {
aBuilder->SetIgnoreScrollFrame(savedIgnoreScrollFrame);
}
}
// Generate a resolution and/or zoom item if needed. If one or both of those is
// created, we don't need to create a separate nsDisplaySubDocument.
uint32_t flags = nsDisplayOwnLayer::GENERATE_SUBDOC_INVALIDATIONS;
// If ignoreViewportScrolling is true then the top most layer we create here
// is going to become the scrollable layer for the root scroll frame, so we
// want to add nsDisplayOwnLayer::GENERATE_SCROLLABLE_LAYER to whatever layer
// becomes the topmost. We do this below.
if (constructZoomItem) {
uint32_t zoomFlags = flags;
if (ignoreViewportScrolling && !constructResolutionItem) {
zoomFlags |= nsDisplayOwnLayer::GENERATE_SCROLLABLE_LAYER;
}
nsDisplayZoom* zoomItem =
new (aBuilder) nsDisplayZoom(aBuilder, subdocRootFrame, &childItems,
subdocAPD, parentAPD, zoomFlags);
childItems.AppendToTop(zoomItem);
needsOwnLayer = false;
}
// Wrap the zoom item in the resolution item if we have both because we want the
// resolution scale applied on top of the app units per dev pixel conversion.
if (ignoreViewportScrolling) {
flags |= nsDisplayOwnLayer::GENERATE_SCROLLABLE_LAYER;
}
if (constructResolutionItem) {
nsDisplayResolution* resolutionItem =
new (aBuilder) nsDisplayResolution(aBuilder, subdocRootFrame, &childItems,
flags);
childItems.AppendToTop(resolutionItem);
needsOwnLayer = false;
}
if (needsOwnLayer) {
// We always want top level content documents to be in their own layer.
nsDisplaySubDocument* layerItem = new (aBuilder) nsDisplaySubDocument(
aBuilder, subdocRootFrame ? subdocRootFrame : this,
&childItems, flags);
childItems.AppendToTop(layerItem);
}
if (aBuilder->IsForFrameVisibility()) {
// We don't add the childItems to the return list as we're dealing with them here.
presShell->RebuildApproximateFrameVisibilityDisplayList(childItems);
childItems.DeleteAll();
} else {
aLists.Content()->AppendToTop(&childItems);
}
}
nscoord
nsSubDocumentFrame::GetIntrinsicISize()
{
if (!IsInline()) {
return 0; // HTML <frame> has no useful intrinsic isize
}
if (mContent->IsXULElement()) {
return 0; // XUL <iframe> and <browser> have no useful intrinsic isize
}
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
"Intrinsic isize should come from the embedded document.");
// We must be an HTML <iframe>. Default to size of 300px x 150px, for IE
// compat (and per CSS2.1 draft).
WritingMode wm = GetWritingMode();
return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 150 : 300);
}
nscoord
nsSubDocumentFrame::GetIntrinsicBSize()
{
// <frame> processing does not use this routine, only <iframe>
NS_ASSERTION(IsInline(), "Shouldn't have been called");
if (mContent->IsXULElement()) {
return 0;
}
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
"Intrinsic bsize should come from the embedded document.");
// Use size of 300px x 150px, for compatibility with IE, and per CSS2.1 draft.
WritingMode wm = GetWritingMode();
return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 300 : 150);
}
#ifdef DEBUG_FRAME_DUMP
void
nsSubDocumentFrame::List(FILE* out, const char* aPrefix, uint32_t aFlags) const
{
nsCString str;
ListGeneric(str, aPrefix, aFlags);
fprintf_stderr(out, "%s\n", str.get());
if (aFlags & TRAVERSE_SUBDOCUMENT_FRAMES) {
nsSubDocumentFrame* f = const_cast<nsSubDocumentFrame*>(this);
nsIFrame* subdocRootFrame = f->GetSubdocumentRootFrame();
if (subdocRootFrame) {
nsCString pfx(aPrefix);
pfx += " ";
subdocRootFrame->List(out, pfx.get(), aFlags);
}
}
}
nsresult nsSubDocumentFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("FrameOuter"), aResult);
}
#endif
nsIAtom*
nsSubDocumentFrame::GetType() const
{
return nsGkAtoms::subDocumentFrame;
}
/* virtual */ nscoord
nsSubDocumentFrame::GetMinISize(nsRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_MIN_WIDTH(this, result);
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
result = subDocRoot->GetMinISize(aRenderingContext);
} else {
result = GetIntrinsicISize();
}
return result;
}
/* virtual */ nscoord
nsSubDocumentFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_PREF_WIDTH(this, result);
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
result = subDocRoot->GetPrefISize(aRenderingContext);
} else {
result = GetIntrinsicISize();
}
return result;
}
/* virtual */ IntrinsicSize
nsSubDocumentFrame::GetIntrinsicSize()
{
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
return subDocRoot->GetIntrinsicSize();
}
return nsAtomicContainerFrame::GetIntrinsicSize();
}
/* virtual */ nsSize
nsSubDocumentFrame::GetIntrinsicRatio()
{
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
return subDocRoot->GetIntrinsicRatio();
}
return nsAtomicContainerFrame::GetIntrinsicRatio();
}
/* virtual */
LogicalSize
nsSubDocumentFrame::ComputeAutoSize(nsRenderingContext* aRenderingContext,
WritingMode aWM,
const LogicalSize& aCBSize,
nscoord aAvailableISize,
const LogicalSize& aMargin,
const LogicalSize& aBorder,
const LogicalSize& aPadding,
ComputeSizeFlags aFlags)
{
if (!IsInline()) {
return nsFrame::ComputeAutoSize(aRenderingContext, aWM, aCBSize,
aAvailableISize, aMargin, aBorder,
aPadding, aFlags);
}
const WritingMode wm = GetWritingMode();
LogicalSize result(wm, GetIntrinsicISize(), GetIntrinsicBSize());
return result.ConvertTo(aWM, wm);
}
/* virtual */
LogicalSize
nsSubDocumentFrame::ComputeSize(nsRenderingContext* aRenderingContext,
WritingMode aWM,
const LogicalSize& aCBSize,
nscoord aAvailableISize,
const LogicalSize& aMargin,
const LogicalSize& aBorder,
const LogicalSize& aPadding,
ComputeSizeFlags aFlags)
{
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
if (subDocRoot) {
return ComputeSizeWithIntrinsicDimensions(aRenderingContext, aWM,
subDocRoot->GetIntrinsicSize(),
subDocRoot->GetIntrinsicRatio(),
aCBSize, aMargin, aBorder,
aPadding, aFlags);
}
return nsAtomicContainerFrame::ComputeSize(aRenderingContext, aWM,
aCBSize, aAvailableISize,
aMargin, aBorder, aPadding,
aFlags);
}
void
nsSubDocumentFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsSubDocumentFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
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NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d",
aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight()));
1998-07-27 22:05:11 +04:00
NS_ASSERTION(aReflowInput.ComputedWidth() != NS_UNCONSTRAINEDSIZE,
"Shouldn't have unconstrained stuff here "
"thanks to the rules of reflow");
NS_ASSERTION(NS_INTRINSICSIZE != aReflowInput.ComputedHeight(),
"Shouldn't have unconstrained stuff here "
"thanks to ComputeAutoSize");
aStatus.Reset();
NS_ASSERTION(mContent->GetPrimaryFrame() == this,
"Shouldn't happen");
// XUL <iframe> or <browser>, or HTML <iframe>, <object> or <embed>
aDesiredSize.SetSize(aReflowInput.GetWritingMode(),
aReflowInput.ComputedSizeWithBorderPadding());
// "offset" is the offset of our content area from our frame's
// top-left corner.
nsPoint offset = nsPoint(aReflowInput.ComputedPhysicalBorderPadding().left,
aReflowInput.ComputedPhysicalBorderPadding().top);
if (mInnerView) {
const nsMargin& bp = aReflowInput.ComputedPhysicalBorderPadding();
nsSize innerSize(aDesiredSize.Width() - bp.LeftRight(),
aDesiredSize.Height() - bp.TopBottom());
// Size & position the view according to 'object-fit' & 'object-position'.
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
IntrinsicSize intrinsSize;
nsSize intrinsRatio;
if (subDocRoot) {
intrinsSize = subDocRoot->GetIntrinsicSize();
intrinsRatio = subDocRoot->GetIntrinsicRatio();
}
nsRect destRect =
nsLayoutUtils::ComputeObjectDestRect(nsRect(offset, innerSize),
intrinsSize, intrinsRatio,
StylePosition());
nsViewManager* vm = mInnerView->GetViewManager();
vm->MoveViewTo(mInnerView, destRect.x, destRect.y);
vm->ResizeView(mInnerView, nsRect(nsPoint(0, 0), destRect.Size()), true);
}
aDesiredSize.SetOverflowAreasToDesiredBounds();
if (!ShouldClipSubdocument()) {
nsIFrame* subdocRootFrame = GetSubdocumentRootFrame();
if (subdocRootFrame) {
aDesiredSize.mOverflowAreas.UnionWith(subdocRootFrame->GetOverflowAreas() + offset);
}
}
FinishAndStoreOverflow(&aDesiredSize);
if (!aPresContext->IsPaginated() && !mPostedReflowCallback) {
PresContext()->PresShell()->PostReflowCallback(this);
mPostedReflowCallback = true;
}
1998-07-27 22:05:11 +04:00
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%s",
aDesiredSize.Width(), aDesiredSize.Height(), ToString(aStatus).c_str()));
1998-07-27 22:05:11 +04:00
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
bool
nsSubDocumentFrame::ReflowFinished()
{
if (mFrameLoader) {
AutoWeakFrame weakFrame(this);
mFrameLoader->UpdatePositionAndSize(this);
if (weakFrame.IsAlive()) {
// Make sure that we can post a reflow callback in the future.
mPostedReflowCallback = false;
}
} else {
mPostedReflowCallback = false;
}
return false;
}
void
nsSubDocumentFrame::ReflowCallbackCanceled()
{
mPostedReflowCallback = false;
}
nsresult
nsSubDocumentFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
1998-10-03 01:59:59 +04:00
{
if (aNameSpaceID != kNameSpaceID_None) {
return NS_OK;
}
// If the noResize attribute changes, dis/allow frame to be resized
if (aAttribute == nsGkAtoms::noresize) {
// Note that we're not doing content type checks, but that's ok -- if
// they'd fail we will just end up with a null framesetFrame.
if (mContent->GetParent()->IsHTMLElement(nsGkAtoms::frameset)) {
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nsIFrame* parentFrame = GetParent();
if (parentFrame) {
// There is no interface for nsHTMLFramesetFrame so QI'ing to
// concrete class, yay!
nsHTMLFramesetFrame* framesetFrame = do_QueryFrame(parentFrame);
if (framesetFrame) {
framesetFrame->RecalculateBorderResize();
}
}
}
}
else if (aAttribute == nsGkAtoms::showresizer) {
nsIFrame* rootFrame = GetSubdocumentRootFrame();
if (rootFrame) {
rootFrame->PresContext()->PresShell()->
FrameNeedsReflow(rootFrame, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
}
}
else if (aAttribute == nsGkAtoms::marginwidth ||
aAttribute == nsGkAtoms::marginheight) {
// Retrieve the attributes
CSSIntSize margins = GetMarginAttributes();
// Notify the frameloader
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<nsFrameLoader> frameloader = FrameLoader();
if (frameloader)
frameloader->MarginsChanged(margins.width, margins.height);
}
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return NS_OK;
}
nsIFrame*
NS_NewSubDocumentFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsSubDocumentFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsSubDocumentFrame)
class nsHideViewer : public Runnable {
public:
nsHideViewer(nsIContent* aFrameElement,
nsFrameLoader* aFrameLoader,
nsIPresShell* aPresShell,
bool aHideViewerIfFrameless)
: mFrameElement(aFrameElement),
mFrameLoader(aFrameLoader),
mPresShell(aPresShell),
mHideViewerIfFrameless(aHideViewerIfFrameless)
{
NS_ASSERTION(mFrameElement, "Must have a frame element");
NS_ASSERTION(mFrameLoader, "Must have a frame loader");
NS_ASSERTION(mPresShell, "Must have a presshell");
}
NS_IMETHOD Run() override
{
// Flush frames, to ensure any pending display:none changes are made.
// Note it can be unsafe to flush if we've destroyed the presentation
// for some other reason, like if we're shutting down.
if (!mPresShell->IsDestroying()) {
mPresShell->FlushPendingNotifications(FlushType::Frames);
}
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// Either the frame has been constructed by now, or it never will be,
// either way we want to clear the stashed views.
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mFrameLoader->SetDetachedSubdocFrame(nullptr, nullptr);
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nsSubDocumentFrame* frame = do_QueryFrame(mFrameElement->GetPrimaryFrame());
if ((!frame && mHideViewerIfFrameless) ||
mPresShell->IsDestroying()) {
// Either the frame element has no nsIFrame or the presshell is being
2016-04-02 09:54:00 +03:00
// destroyed. Hide the nsFrameLoader, which destroys the presentation.
mFrameLoader->Hide();
}
return NS_OK;
}
private:
nsCOMPtr<nsIContent> mFrameElement;
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<nsFrameLoader> mFrameLoader;
nsCOMPtr<nsIPresShell> mPresShell;
bool mHideViewerIfFrameless;
};
static nsView*
BeginSwapDocShellsForViews(nsView* aSibling);
void
nsSubDocumentFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
if (mPostedReflowCallback) {
PresContext()->PresShell()->CancelReflowCallback(this);
mPostedReflowCallback = false;
}
// Detach the subdocument's views and stash them in the frame loader.
// We can then reattach them if we're being reframed (for example if
// the frame has been made position:fixed).
2016-04-02 09:54:00 +03:00
RefPtr<nsFrameLoader> frameloader = FrameLoader();
if (frameloader) {
nsView* detachedViews = ::BeginSwapDocShellsForViews(mInnerView->GetFirstChild());
2016-05-05 00:12:48 +03:00
if (detachedViews && detachedViews->GetFrame()) {
MOZ_ASSERT(mContent->OwnerDoc());
frameloader->SetDetachedSubdocFrame(
detachedViews->GetFrame(), mContent->OwnerDoc());
// We call nsFrameLoader::HideViewer() in a script runner so that we can
// safely determine whether the frame is being reframed or destroyed.
nsContentUtils::AddScriptRunner(
new nsHideViewer(mContent,
frameloader,
PresContext()->PresShell(),
(mDidCreateDoc || mCallingShow)));
} else {
frameloader->SetDetachedSubdocFrame(nullptr, nullptr);
if (mDidCreateDoc || mCallingShow) {
frameloader->Hide();
}
}
}
nsAtomicContainerFrame::DestroyFrom(aDestructRoot);
}
CSSIntSize
nsSubDocumentFrame::GetMarginAttributes()
{
CSSIntSize result(-1, -1);
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::marginwidth);
if (attr && attr->Type() == nsAttrValue::eInteger)
result.width = attr->GetIntegerValue();
attr = content->GetParsedAttr(nsGkAtoms::marginheight);
if (attr && attr->Type() == nsAttrValue::eInteger)
result.height = attr->GetIntegerValue();
}
return result;
}
nsFrameLoader*
nsSubDocumentFrame::FrameLoader()
{
nsIContent* content = GetContent();
if (!content)
return nullptr;
if (!mFrameLoader) {
nsCOMPtr<nsIFrameLoaderOwner> loaderOwner = do_QueryInterface(content);
if (loaderOwner) {
mFrameLoader = loaderOwner->GetFrameLoader();
}
}
return mFrameLoader;
}
// XXX this should be called ObtainDocShell or something like that,
// to indicate that it could have side effects
nsresult
nsSubDocumentFrame::GetDocShell(nsIDocShell **aDocShell)
{
*aDocShell = nullptr;
NS_ENSURE_STATE(FrameLoader());
return mFrameLoader->GetDocShell(aDocShell);
}
static void
DestroyDisplayItemDataForFrames(nsIFrame* aFrame)
{
FrameLayerBuilder::DestroyDisplayItemDataFor(aFrame);
nsIFrame::ChildListIterator lists(aFrame);
for (; !lists.IsDone(); lists.Next()) {
nsFrameList::Enumerator childFrames(lists.CurrentList());
for (; !childFrames.AtEnd(); childFrames.Next()) {
DestroyDisplayItemDataForFrames(childFrames.get());
}
}
}
static bool
BeginSwapDocShellsForDocument(nsIDocument* aDocument, void*)
{
NS_PRECONDITION(aDocument, "");
nsIPresShell* shell = aDocument->GetShell();
if (shell) {
// Disable painting while the views are detached, see bug 946929.
shell->SetNeverPainting(true);
nsIFrame* rootFrame = shell->GetRootFrame();
if (rootFrame) {
::DestroyDisplayItemDataForFrames(rootFrame);
}
}
aDocument->EnumerateActivityObservers(
nsPluginFrame::BeginSwapDocShells, nullptr);
aDocument->EnumerateSubDocuments(BeginSwapDocShellsForDocument, nullptr);
return true;
}
static nsView*
BeginSwapDocShellsForViews(nsView* aSibling)
{
// Collect the removed sibling views in reverse order in 'removedViews'.
nsView* removedViews = nullptr;
while (aSibling) {
nsIDocument* doc = ::GetDocumentFromView(aSibling);
if (doc) {
::BeginSwapDocShellsForDocument(doc, nullptr);
}
nsView* next = aSibling->GetNextSibling();
aSibling->GetViewManager()->RemoveChild(aSibling);
aSibling->SetNextSibling(removedViews);
removedViews = aSibling;
aSibling = next;
}
return removedViews;
}
static void
InsertViewsInReverseOrder(nsView* aSibling, nsView* aParent)
{
NS_PRECONDITION(aParent, "");
NS_PRECONDITION(!aParent->GetFirstChild(), "inserting into non-empty list");
nsViewManager* vm = aParent->GetViewManager();
while (aSibling) {
nsView* next = aSibling->GetNextSibling();
aSibling->SetNextSibling(nullptr);
// true means 'after' in document order which is 'before' in view order,
// so this call prepends the child, thus reversing the siblings as we go.
vm->InsertChild(aParent, aSibling, nullptr, true);
aSibling = next;
}
}
nsresult
nsSubDocumentFrame::BeginSwapDocShells(nsIFrame* aOther)
{
if (!aOther || aOther->GetType() != nsGkAtoms::subDocumentFrame) {
return NS_ERROR_NOT_IMPLEMENTED;
}
nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther);
if (!mFrameLoader || !mDidCreateDoc || mCallingShow ||
!other->mFrameLoader || !other->mDidCreateDoc) {
return NS_ERROR_NOT_IMPLEMENTED;
}
if (mInnerView && other->mInnerView) {
nsView* ourSubdocViews = mInnerView->GetFirstChild();
nsView* ourRemovedViews = ::BeginSwapDocShellsForViews(ourSubdocViews);
nsView* otherSubdocViews = other->mInnerView->GetFirstChild();
nsView* otherRemovedViews = ::BeginSwapDocShellsForViews(otherSubdocViews);
::InsertViewsInReverseOrder(ourRemovedViews, other->mInnerView);
::InsertViewsInReverseOrder(otherRemovedViews, mInnerView);
}
mFrameLoader.swap(other->mFrameLoader);
return NS_OK;
}
static bool
EndSwapDocShellsForDocument(nsIDocument* aDocument, void*)
{
NS_PRECONDITION(aDocument, "");
// Our docshell and view trees have been updated for the new hierarchy.
// Now also update all nsDeviceContext::mWidget to that of the
// container view in the new hierarchy.
nsCOMPtr<nsIDocShell> ds = aDocument->GetDocShell();
if (ds) {
nsCOMPtr<nsIContentViewer> cv;
ds->GetContentViewer(getter_AddRefs(cv));
while (cv) {
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 08:24:48 +03:00
RefPtr<nsPresContext> pc;
cv->GetPresContext(getter_AddRefs(pc));
if (pc && pc->GetPresShell()) {
pc->GetPresShell()->SetNeverPainting(ds->IsInvisible());
}
nsDeviceContext* dc = pc ? pc->DeviceContext() : nullptr;
if (dc) {
nsView* v = cv->FindContainerView();
dc->Init(v ? v->GetNearestWidget(nullptr) : nullptr);
}
nsCOMPtr<nsIContentViewer> prev;
cv->GetPreviousViewer(getter_AddRefs(prev));
cv = prev;
}
}
aDocument->EnumerateActivityObservers(
nsPluginFrame::EndSwapDocShells, nullptr);
aDocument->EnumerateSubDocuments(EndSwapDocShellsForDocument, nullptr);
return true;
}
static void
EndSwapDocShellsForViews(nsView* aSibling)
{
for ( ; aSibling; aSibling = aSibling->GetNextSibling()) {
nsIDocument* doc = ::GetDocumentFromView(aSibling);
if (doc) {
::EndSwapDocShellsForDocument(doc, nullptr);
}
nsIFrame *frame = aSibling->GetFrame();
if (frame) {
nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrame(frame);
if (parent->HasAnyStateBits(NS_FRAME_IN_POPUP)) {
nsIFrame::AddInPopupStateBitToDescendants(frame);
} else {
nsIFrame::RemoveInPopupStateBitFromDescendants(frame);
}
if (frame->HasInvalidFrameInSubtree()) {
while (parent && !parent->HasAnyStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT | NS_FRAME_IS_NONDISPLAY)) {
parent->AddStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT);
parent = nsLayoutUtils::GetCrossDocParentFrame(parent);
}
}
}
}
}
void
nsSubDocumentFrame::EndSwapDocShells(nsIFrame* aOther)
{
nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther);
AutoWeakFrame weakThis(this);
AutoWeakFrame weakOther(aOther);
if (mInnerView) {
::EndSwapDocShellsForViews(mInnerView->GetFirstChild());
}
if (other->mInnerView) {
::EndSwapDocShellsForViews(other->mInnerView->GetFirstChild());
}
// Now make sure we reflow both frames, in case their contents
// determine their size.
// And repaint them, for good measure, in case there's nothing
// interesting that happens during reflow.
if (weakThis.IsAlive()) {
PresContext()->PresShell()->
FrameNeedsReflow(this, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
InvalidateFrameSubtree();
}
if (weakOther.IsAlive()) {
other->PresContext()->PresShell()->
FrameNeedsReflow(other, nsIPresShell::eTreeChange, NS_FRAME_IS_DIRTY);
other->InvalidateFrameSubtree();
}
}
nsView*
nsSubDocumentFrame::EnsureInnerView()
{
if (mInnerView) {
return mInnerView;
}
// create, init, set the parent of the view
nsView* outerView = GetView();
NS_ASSERTION(outerView, "Must have an outer view already");
nsRect viewBounds(0, 0, 0, 0); // size will be fixed during reflow
nsViewManager* viewMan = outerView->GetViewManager();
nsView* innerView = viewMan->CreateView(viewBounds, outerView);
if (!innerView) {
NS_ERROR("Could not create inner view");
return nullptr;
}
mInnerView = innerView;
viewMan->InsertChild(outerView, innerView, nullptr, true);
return mInnerView;
}
nsIFrame*
nsSubDocumentFrame::ObtainIntrinsicSizeFrame()
{
nsCOMPtr<nsIObjectLoadingContent> olc = do_QueryInterface(GetContent());
if (olc) {
// We are an HTML <object>, <embed> or <applet> (a replaced element).
// Try to get an nsIFrame for our sub-document's document element
nsIFrame* subDocRoot = nullptr;
nsCOMPtr<nsIDocShell> docShell;
GetDocShell(getter_AddRefs(docShell));
if (docShell) {
nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
if (presShell) {
nsIScrollableFrame* scrollable = presShell->GetRootScrollFrameAsScrollable();
if (scrollable) {
nsIFrame* scrolled = scrollable->GetScrolledFrame();
if (scrolled) {
subDocRoot = scrolled->PrincipalChildList().FirstChild();
}
}
}
}
if (subDocRoot && subDocRoot->GetContent() &&
subDocRoot->GetContent()->NodeInfo()->Equals(nsGkAtoms::svg, kNameSpaceID_SVG)) {
return subDocRoot; // SVG documents have an intrinsic size
}
}
return nullptr;
}