зеркало из https://github.com/mozilla/gecko-dev.git
1238 строки
40 KiB
C++
1238 строки
40 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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/*
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* rendering object for replaced elements that contain a document, such
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* as <frame>, <iframe>, and some <object>s
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*/
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#include "nsSubDocumentFrame.h"
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#include "mozilla/layout/RenderFrameParent.h"
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#include "nsCOMPtr.h"
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#include "nsGenericHTMLElement.h"
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#include "nsGenericHTMLFrameElement.h"
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#include "nsAttrValueInlines.h"
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#include "nsIDocShell.h"
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#include "nsIContentViewer.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsIDocument.h"
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#include "nsView.h"
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#include "nsViewManager.h"
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsFrameSetFrame.h"
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#include "nsIDOMHTMLFrameElement.h"
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#include "nsIScrollable.h"
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#include "nsNameSpaceManager.h"
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#include "nsDisplayList.h"
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#include "nsIScrollableFrame.h"
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#include "nsIObjectLoadingContent.h"
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#include "nsLayoutUtils.h"
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#include "FrameLayerBuilder.h"
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#include "nsPluginFrame.h"
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#include "nsContentUtils.h"
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#include "nsIPermissionManager.h"
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#include "nsServiceManagerUtils.h"
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using namespace mozilla;
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using mozilla::layout::RenderFrameParent;
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static nsIDocument*
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GetDocumentFromView(nsView* aView)
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{
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NS_PRECONDITION(aView, "");
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nsIFrame* f = aView->GetFrame();
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nsIPresShell* ps = f ? f->PresContext()->PresShell() : nullptr;
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return ps ? ps->GetDocument() : nullptr;
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}
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nsSubDocumentFrame::nsSubDocumentFrame(nsStyleContext* aContext)
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: nsLeafFrame(aContext)
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, mIsInline(false)
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, mPostedReflowCallback(false)
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, mDidCreateDoc(false)
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, mCallingShow(false)
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{
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}
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#ifdef ACCESSIBILITY
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a11y::AccType
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nsSubDocumentFrame::AccessibleType()
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{
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return a11y::eOuterDocType;
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}
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#endif
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NS_QUERYFRAME_HEAD(nsSubDocumentFrame)
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NS_QUERYFRAME_ENTRY(nsSubDocumentFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsLeafFrame)
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class AsyncFrameInit : public nsRunnable
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{
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public:
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explicit AsyncFrameInit(nsIFrame* aFrame) : mFrame(aFrame) {}
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NS_IMETHOD Run()
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{
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if (mFrame.IsAlive()) {
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static_cast<nsSubDocumentFrame*>(mFrame.GetFrame())->ShowViewer();
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}
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return NS_OK;
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}
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private:
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nsWeakFrame mFrame;
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};
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static void
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InsertViewsInReverseOrder(nsView* aSibling, nsView* aParent);
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static void
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EndSwapDocShellsForViews(nsView* aView);
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void
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nsSubDocumentFrame::Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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// determine if we are a <frame> or <iframe>
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if (aContent) {
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nsCOMPtr<nsIDOMHTMLFrameElement> frameElem = do_QueryInterface(aContent);
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mIsInline = frameElem ? false : true;
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}
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nsLeafFrame::Init(aContent, aParent, aPrevInFlow);
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// We are going to create an inner view. If we need a view for the
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// OuterFrame but we wait for the normal view creation path in
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// nsCSSFrameConstructor, then we will lose because the inner view's
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// parent will already have been set to some outer view (e.g., the
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// canvas) when it really needs to have this frame's view as its
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// parent. So, create this frame's view right away, whether we
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// really need it or not, and the inner view will get it as the
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// parent.
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if (!HasView()) {
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nsContainerFrame::CreateViewForFrame(this, true);
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}
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EnsureInnerView();
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// Set the primary frame now so that nsDocumentViewer::FindContainerView
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// called from within EndSwapDocShellsForViews below can find it if needed.
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aContent->SetPrimaryFrame(this);
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// If we have a detached subdoc's root view on our frame loader, re-insert
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// it into the view tree. This happens when we've been reframed, and
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// ensures the presentation persists across reframes. If the frame element
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// has changed documents however, we blow away the presentation.
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nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
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if (frameloader) {
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nsCOMPtr<nsIDocument> oldContainerDoc;
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nsView* detachedViews =
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frameloader->GetDetachedSubdocView(getter_AddRefs(oldContainerDoc));
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if (detachedViews) {
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if (oldContainerDoc == aContent->OwnerDoc()) {
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// Restore stashed presentation.
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::InsertViewsInReverseOrder(detachedViews, mInnerView);
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::EndSwapDocShellsForViews(mInnerView->GetFirstChild());
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} else {
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// Presentation is for a different document, don't restore it.
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frameloader->Hide();
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}
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}
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frameloader->SetDetachedSubdocView(nullptr, nullptr);
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}
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nsContentUtils::AddScriptRunner(new AsyncFrameInit(this));
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}
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void
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nsSubDocumentFrame::ShowViewer()
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{
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if (mCallingShow) {
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return;
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}
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if (!PresContext()->IsDynamic()) {
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// We let the printing code take care of loading the document; just
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// create the inner view for it to use.
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(void) EnsureInnerView();
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} else {
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nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
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if (frameloader) {
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nsIntSize margin = GetMarginAttributes();
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nsWeakFrame weakThis(this);
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mCallingShow = true;
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const nsAttrValue* attrValue =
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GetContent()->AsElement()->GetParsedAttr(nsGkAtoms::scrolling);
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int32_t scrolling =
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nsGenericHTMLFrameElement::MapScrollingAttribute(attrValue);
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bool didCreateDoc =
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frameloader->Show(margin.width, margin.height,
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scrolling, scrolling, this);
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if (!weakThis.IsAlive()) {
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return;
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}
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mCallingShow = false;
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mDidCreateDoc = didCreateDoc;
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}
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}
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}
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nsIFrame*
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nsSubDocumentFrame::GetSubdocumentRootFrame()
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{
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if (!mInnerView)
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return nullptr;
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nsView* subdocView = mInnerView->GetFirstChild();
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return subdocView ? subdocView->GetFrame() : nullptr;
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}
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nsIPresShell*
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nsSubDocumentFrame::GetSubdocumentPresShellForPainting(uint32_t aFlags)
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{
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if (!mInnerView)
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return nullptr;
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nsView* subdocView = mInnerView->GetFirstChild();
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if (!subdocView)
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return nullptr;
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nsIPresShell* presShell = nullptr;
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nsIFrame* subdocRootFrame = subdocView->GetFrame();
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if (subdocRootFrame) {
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presShell = subdocRootFrame->PresContext()->PresShell();
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}
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// If painting is suppressed in the presshell, we try to look for a better
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// presshell to use.
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if (!presShell || (presShell->IsPaintingSuppressed() &&
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!(aFlags & IGNORE_PAINT_SUPPRESSION))) {
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// During page transition mInnerView will sometimes have two children, the
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// first being the new page that may not have any frame, and the second
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// being the old page that will probably have a frame.
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nsView* nextView = subdocView->GetNextSibling();
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nsIFrame* frame = nullptr;
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if (nextView) {
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frame = nextView->GetFrame();
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}
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if (frame) {
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nsIPresShell* ps = frame->PresContext()->PresShell();
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if (!presShell || (ps && !ps->IsPaintingSuppressed())) {
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subdocView = nextView;
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subdocRootFrame = frame;
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presShell = ps;
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}
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}
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if (!presShell) {
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// If we don't have a frame we use this roundabout way to get the pres shell.
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if (!mFrameLoader)
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return nullptr;
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nsCOMPtr<nsIDocShell> docShell;
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mFrameLoader->GetDocShell(getter_AddRefs(docShell));
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if (!docShell)
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return nullptr;
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presShell = docShell->GetPresShell();
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}
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}
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return presShell;
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}
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nsIntSize
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nsSubDocumentFrame::GetSubdocumentSize()
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{
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if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
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nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
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if (frameloader) {
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nsCOMPtr<nsIDocument> oldContainerDoc;
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nsView* detachedViews =
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frameloader->GetDetachedSubdocView(getter_AddRefs(oldContainerDoc));
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if (detachedViews) {
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nsSize size = detachedViews->GetBounds().Size();
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nsPresContext* presContext = detachedViews->GetFrame()->PresContext();
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return nsIntSize(presContext->AppUnitsToDevPixels(size.width),
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presContext->AppUnitsToDevPixels(size.height));
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}
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}
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// Pick some default size for now. Using 10x10 because that's what the
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// code used to do.
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return nsIntSize(10, 10);
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} else {
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nsSize docSizeAppUnits;
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nsPresContext* presContext = PresContext();
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nsCOMPtr<nsIDOMHTMLFrameElement> frameElem =
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do_QueryInterface(GetContent());
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if (frameElem) {
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docSizeAppUnits = GetSize();
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} else {
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docSizeAppUnits = GetContentRect().Size();
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}
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return nsIntSize(presContext->AppUnitsToDevPixels(docSizeAppUnits.width),
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presContext->AppUnitsToDevPixels(docSizeAppUnits.height));
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}
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}
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bool
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nsSubDocumentFrame::PassPointerEventsToChildren()
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{
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// Limit use of mozpasspointerevents to documents with embedded:apps/chrome
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// permission, because this could be used by the parent document to discover
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// which parts of the subdocument are transparent to events (if subdocument
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// uses pointer-events:none on its root element, which is admittedly
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// unlikely)
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if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::mozpasspointerevents)) {
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if (PresContext()->IsChrome()) {
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return true;
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}
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nsCOMPtr<nsIPermissionManager> permMgr =
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services::GetPermissionManager();
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if (permMgr) {
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uint32_t permission = nsIPermissionManager::DENY_ACTION;
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permMgr->TestPermissionFromPrincipal(GetContent()->NodePrincipal(),
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"embed-apps", &permission);
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return permission == nsIPermissionManager::ALLOW_ACTION;
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}
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}
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return false;
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}
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static void
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WrapBackgroundColorInOwnLayer(nsDisplayListBuilder* aBuilder,
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nsIFrame* aFrame,
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nsDisplayList* aList)
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{
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nsDisplayList tempItems;
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nsDisplayItem* item;
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while ((item = aList->RemoveBottom()) != nullptr) {
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if (item->GetType() == nsDisplayItem::TYPE_BACKGROUND_COLOR) {
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nsDisplayList tmpList;
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tmpList.AppendToTop(item);
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item = new (aBuilder) nsDisplayOwnLayer(aBuilder, aFrame, &tmpList);
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}
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tempItems.AppendToTop(item);
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}
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aList->AppendToTop(&tempItems);
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}
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void
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nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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if (!IsVisibleForPainting(aBuilder))
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return;
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nsFrameLoader* frameLoader = FrameLoader();
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RenderFrameParent* rfp = nullptr;
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if (frameLoader) {
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rfp = frameLoader->GetCurrentRemoteFrame();
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}
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// If we are pointer-events:none then we don't need to HitTest background
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bool pointerEventsNone = StyleVisibility()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE;
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if (!aBuilder->IsForEventDelivery() || !pointerEventsNone) {
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nsDisplayListCollection decorations;
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DisplayBorderBackgroundOutline(aBuilder, decorations);
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if (rfp) {
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// Wrap background colors of <iframe>s with remote subdocuments in their
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// own layer so we generate a ColorLayer. This is helpful for optimizing
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// compositing; we can skip compositing the ColorLayer when the
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// remote content is opaque.
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WrapBackgroundColorInOwnLayer(aBuilder, this, decorations.BorderBackground());
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}
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decorations.MoveTo(aLists);
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}
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bool passPointerEventsToChildren = false;
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if (aBuilder->IsForEventDelivery()) {
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passPointerEventsToChildren = PassPointerEventsToChildren();
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// If mozpasspointerevents is set, then we should allow subdocument content
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// to handle events even if we're pointer-events:none.
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if (pointerEventsNone && !passPointerEventsToChildren) {
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return;
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}
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}
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// If we're passing pointer events to children then we have to descend into
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// subdocuments no matter what, to determine which parts are transparent for
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// elementFromPoint.
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if (!mInnerView ||
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(!aBuilder->GetDescendIntoSubdocuments() && !passPointerEventsToChildren)) {
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return;
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}
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if (rfp) {
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rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
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return;
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}
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nsCOMPtr<nsIPresShell> presShell =
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GetSubdocumentPresShellForPainting(
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aBuilder->IsIgnoringPaintSuppression() ? IGNORE_PAINT_SUPPRESSION : 0);
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if (!presShell) {
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return;
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}
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nsIFrame* subdocRootFrame = presShell->GetRootFrame();
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nsPresContext* presContext = presShell->GetPresContext();
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int32_t parentAPD = PresContext()->AppUnitsPerDevPixel();
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int32_t subdocAPD = presContext->AppUnitsPerDevPixel();
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nsRect dirty;
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bool haveDisplayPort = false;
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bool ignoreViewportScrolling = false;
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nsIFrame* savedIgnoreScrollFrame = nullptr;
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if (subdocRootFrame) {
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// get the dirty rect relative to the root frame of the subdoc
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dirty = aDirtyRect + GetOffsetToCrossDoc(subdocRootFrame);
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// and convert into the appunits of the subdoc
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dirty = dirty.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);
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if (nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame()) {
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// for root content documents we want the base to be the composition bounds
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nsRect displayportBase = presContext->IsRootContentDocument() ?
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nsRect(nsPoint(0,0), nsLayoutUtils::CalculateCompositionSizeForFrame(rootScrollFrame)) :
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dirty.Intersect(nsRect(nsPoint(0,0), subdocRootFrame->GetSize()));
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nsRect displayPort;
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if (!aBuilder->IsForEventDelivery() &&
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nsLayoutUtils::GetOrMaybeCreateDisplayPort(
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*aBuilder, rootScrollFrame, displayportBase, &displayPort)) {
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haveDisplayPort = true;
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dirty = displayPort;
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}
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ignoreViewportScrolling = presShell->IgnoringViewportScrolling();
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if (ignoreViewportScrolling) {
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savedIgnoreScrollFrame = aBuilder->GetIgnoreScrollFrame();
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aBuilder->SetIgnoreScrollFrame(rootScrollFrame);
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if (aBuilder->IsForImageVisibility()) {
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// The ExpandRectToNearlyVisible that the root scroll frame would do gets short
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// circuited due to us ignoring the root scroll frame, so we do it here.
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nsIScrollableFrame* rootScrollableFrame = do_QueryFrame(rootScrollFrame);
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dirty = rootScrollableFrame->ExpandRectToNearlyVisible(dirty);
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}
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}
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}
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aBuilder->EnterPresShell(subdocRootFrame);
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} else {
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dirty = aDirtyRect;
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}
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DisplayListClipState::AutoSaveRestore clipState(aBuilder);
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if (ShouldClipSubdocument()) {
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clipState.ClipContainingBlockDescendantsToContentBox(aBuilder, this);
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}
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nsIScrollableFrame *sf = presShell->GetRootScrollFrameAsScrollable();
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bool constructResolutionItem = subdocRootFrame &&
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(presShell->GetXResolution() != 1.0 || presShell->GetYResolution() != 1.0);
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bool constructZoomItem = subdocRootFrame && parentAPD != subdocAPD;
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bool needsOwnLayer = constructResolutionItem || constructZoomItem ||
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haveDisplayPort ||
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presContext->IsRootContentDocument() || (sf && sf->IsScrollingActive());
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nsDisplayList childItems;
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{
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DisplayListClipState::AutoSaveRestore nestedClipState(aBuilder);
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if (needsOwnLayer) {
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// Clear current clip. There's no point in propagating it down, since
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// the layer we will construct will be clipped by the current clip.
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// In fact for nsDisplayZoom propagating it down would be incorrect since
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// nsDisplayZoom changes the meaning of appunits.
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nestedClipState.Clear();
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}
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if (subdocRootFrame) {
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nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
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nsDisplayListBuilder::AutoCurrentScrollParentIdSetter idSetter(
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aBuilder,
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ignoreViewportScrolling && rootScrollFrame && rootScrollFrame->GetContent()
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? nsLayoutUtils::FindOrCreateIDFor(rootScrollFrame->GetContent())
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: aBuilder->GetCurrentScrollParentId());
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aBuilder->SetAncestorHasTouchEventHandler(false);
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subdocRootFrame->
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BuildDisplayListForStackingContext(aBuilder, dirty, &childItems);
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}
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if (!aBuilder->IsForEventDelivery()) {
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// If we are going to use a displayzoom below then any items we put under
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// it need to have underlying frames from the subdocument. So we need to
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// calculate the bounds based on which frame will be the underlying frame
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// for the canvas background color item.
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nsRect bounds = GetContentRectRelativeToSelf() +
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aBuilder->ToReferenceFrame(this);
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if (subdocRootFrame) {
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bounds = bounds.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);
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}
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// If we are in print preview/page layout we want to paint the grey
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// background behind the page, not the canvas color. The canvas color gets
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// painted on the page itself.
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if (nsLayoutUtils::NeedsPrintPreviewBackground(presContext)) {
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presShell->AddPrintPreviewBackgroundItem(
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*aBuilder, childItems, subdocRootFrame ? subdocRootFrame : this,
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bounds);
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} else {
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// Invoke AutoBuildingDisplayList to ensure that the correct dirty rect
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// is used to compute the visible rect if AddCanvasBackgroundColorItem
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// creates a display item.
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nsIFrame* frame = subdocRootFrame ? subdocRootFrame : this;
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nsDisplayListBuilder::AutoBuildingDisplayList
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building(aBuilder, frame, dirty, true);
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// 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);
|
|
|
|
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->IsForImageVisibility()) {
|
|
// We don't add the childItems to the return list as we're dealing with them here.
|
|
presShell->RebuildImageVisibilityDisplayList(childItems);
|
|
childItems.DeleteAll();
|
|
} else {
|
|
aLists.Content()->AppendToTop(&childItems);
|
|
}
|
|
}
|
|
|
|
nscoord
|
|
nsSubDocumentFrame::GetIntrinsicISize()
|
|
{
|
|
if (!IsInline()) {
|
|
return 0; // HTML <frame> has no useful intrinsic width
|
|
}
|
|
|
|
if (mContent->IsXUL()) {
|
|
return 0; // XUL <iframe> and <browser> have no useful intrinsic width
|
|
}
|
|
|
|
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
|
|
"Intrinsic width should come from the embedded document.");
|
|
|
|
// We must be an HTML <iframe>. Default to a width of 300, for IE
|
|
// compat (and per CSS2.1 draft).
|
|
return nsPresContext::CSSPixelsToAppUnits(300);
|
|
}
|
|
|
|
nscoord
|
|
nsSubDocumentFrame::GetIntrinsicBSize()
|
|
{
|
|
// <frame> processing does not use this routine, only <iframe>
|
|
NS_ASSERTION(IsInline(), "Shouldn't have been called");
|
|
|
|
if (mContent->IsXUL()) {
|
|
return 0;
|
|
}
|
|
|
|
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
|
|
"Intrinsic height should come from the embedded document.");
|
|
|
|
// Use 150px, for compatibility with IE, and per CSS2.1 draft.
|
|
return nsPresContext::CSSPixelsToAppUnits(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 nsLeafFrame::GetIntrinsicSize();
|
|
}
|
|
|
|
/* virtual */ nsSize
|
|
nsSubDocumentFrame::GetIntrinsicRatio()
|
|
{
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
return subDocRoot->GetIntrinsicRatio();
|
|
}
|
|
return nsLeafFrame::GetIntrinsicRatio();
|
|
}
|
|
|
|
/* virtual */
|
|
LogicalSize
|
|
nsSubDocumentFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
|
|
WritingMode aWM,
|
|
const LogicalSize& aCBSize,
|
|
nscoord aAvailableISize,
|
|
const LogicalSize& aMargin,
|
|
const LogicalSize& aBorder,
|
|
const LogicalSize& aPadding,
|
|
bool aShrinkWrap)
|
|
{
|
|
if (!IsInline()) {
|
|
return nsFrame::ComputeAutoSize(aRenderingContext, aWM, aCBSize,
|
|
aAvailableISize, aMargin, aBorder,
|
|
aPadding, aShrinkWrap);
|
|
}
|
|
|
|
return nsLeafFrame::ComputeAutoSize(aRenderingContext, aWM, aCBSize,
|
|
aAvailableISize, aMargin, aBorder,
|
|
aPadding, aShrinkWrap);
|
|
}
|
|
|
|
|
|
/* virtual */
|
|
LogicalSize
|
|
nsSubDocumentFrame::ComputeSize(nsRenderingContext *aRenderingContext,
|
|
WritingMode aWM,
|
|
const LogicalSize& aCBSize,
|
|
nscoord aAvailableISize,
|
|
const LogicalSize& aMargin,
|
|
const LogicalSize& aBorder,
|
|
const LogicalSize& aPadding,
|
|
uint32_t aFlags)
|
|
{
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
return nsLayoutUtils::ComputeSizeWithIntrinsicDimensions(aWM,
|
|
aRenderingContext, this,
|
|
subDocRoot->GetIntrinsicSize(),
|
|
subDocRoot->GetIntrinsicRatio(),
|
|
aCBSize,
|
|
aMargin,
|
|
aBorder,
|
|
aPadding);
|
|
}
|
|
return nsLeafFrame::ComputeSize(aRenderingContext, aWM,
|
|
aCBSize, aAvailableISize,
|
|
aMargin, aBorder, aPadding, aFlags);
|
|
}
|
|
|
|
void
|
|
nsSubDocumentFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
DO_GLOBAL_REFLOW_COUNT("nsSubDocumentFrame");
|
|
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
|
|
// printf("OuterFrame::Reflow %X (%d,%d) \n", this, aReflowState.AvailableWidth(), aReflowState.AvailableHeight());
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("enter nsSubDocumentFrame::Reflow: maxSize=%d,%d",
|
|
aReflowState.AvailableWidth(), aReflowState.AvailableHeight()));
|
|
|
|
aStatus = NS_FRAME_COMPLETE;
|
|
|
|
NS_ASSERTION(mContent->GetPrimaryFrame() == this,
|
|
"Shouldn't happen");
|
|
|
|
// XUL <iframe> or <browser>, or HTML <iframe>, <object> or <embed>
|
|
nsLeafFrame::DoReflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// "offset" is the offset of our content area from our frame's
|
|
// top-left corner.
|
|
nsPoint offset = nsPoint(aReflowState.ComputedPhysicalBorderPadding().left,
|
|
aReflowState.ComputedPhysicalBorderPadding().top);
|
|
|
|
nsSize innerSize(aDesiredSize.Width(), aDesiredSize.Height());
|
|
innerSize.width -= aReflowState.ComputedPhysicalBorderPadding().LeftRight();
|
|
innerSize.height -= aReflowState.ComputedPhysicalBorderPadding().TopBottom();
|
|
|
|
if (mInnerView) {
|
|
nsViewManager* vm = mInnerView->GetViewManager();
|
|
vm->MoveViewTo(mInnerView, offset.x, offset.y);
|
|
vm->ResizeView(mInnerView, nsRect(nsPoint(0, 0), innerSize), 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;
|
|
}
|
|
|
|
// printf("OuterFrame::Reflow DONE %X (%d,%d)\n", this,
|
|
// aDesiredSize.Width(), aDesiredSize.Height());
|
|
|
|
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
|
|
("exit nsSubDocumentFrame::Reflow: size=%d,%d status=%x",
|
|
aDesiredSize.Width(), aDesiredSize.Height(), aStatus));
|
|
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
|
|
}
|
|
|
|
bool
|
|
nsSubDocumentFrame::ReflowFinished()
|
|
{
|
|
if (mFrameLoader) {
|
|
nsWeakFrame 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)
|
|
{
|
|
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()->Tag() == nsGkAtoms::frameset) {
|
|
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
|
|
nsIntSize margins = GetMarginAttributes();
|
|
|
|
// Notify the frameloader
|
|
nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
|
|
if (frameloader)
|
|
frameloader->MarginsChanged(margins.width, margins.height);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame*
|
|
NS_NewSubDocumentFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsSubDocumentFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsSubDocumentFrame)
|
|
|
|
class nsHideViewer : public nsRunnable {
|
|
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()
|
|
{
|
|
// 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(Flush_Frames);
|
|
}
|
|
nsIFrame* frame = mFrameElement->GetPrimaryFrame();
|
|
if ((!frame && mHideViewerIfFrameless) ||
|
|
mPresShell->IsDestroying()) {
|
|
// Either the frame element has no nsIFrame or the presshell is being
|
|
// destroyed. Hide the nsFrameLoader, which destroys the presentation,
|
|
// and clear our references to the stashed presentation.
|
|
mFrameLoader->SetDetachedSubdocView(nullptr, nullptr);
|
|
mFrameLoader->Hide();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
nsCOMPtr<nsIContent> mFrameElement;
|
|
nsRefPtr<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).
|
|
nsFrameLoader* frameloader = FrameLoader();
|
|
if (frameloader) {
|
|
nsView* detachedViews = ::BeginSwapDocShellsForViews(mInnerView->GetFirstChild());
|
|
frameloader->SetDetachedSubdocView(detachedViews, 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,
|
|
mFrameLoader,
|
|
PresContext()->PresShell(),
|
|
(mDidCreateDoc || mCallingShow)));
|
|
}
|
|
|
|
nsLeafFrame::DestroyFrom(aDestructRoot);
|
|
}
|
|
|
|
nsIntSize
|
|
nsSubDocumentFrame::GetMarginAttributes()
|
|
{
|
|
nsIntSize 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) {
|
|
nsCOMPtr<nsIFrameLoader> loader;
|
|
loaderOwner->GetFrameLoader(getter_AddRefs(loader));
|
|
mFrameLoader = static_cast<nsFrameLoader*>(loader.get());
|
|
}
|
|
}
|
|
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) {
|
|
nsRefPtr<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)) {
|
|
parent->AddStateBits(NS_FRAME_DESCENDANT_NEEDS_PAINT);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(parent);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsSubDocumentFrame::EndSwapDocShells(nsIFrame* aOther)
|
|
{
|
|
nsSubDocumentFrame* other = static_cast<nsSubDocumentFrame*>(aOther);
|
|
nsWeakFrame weakThis(this);
|
|
nsWeakFrame 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->GetFirstPrincipalChild();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (subDocRoot && subDocRoot->GetContent() &&
|
|
subDocRoot->GetContent()->NodeInfo()->Equals(nsGkAtoms::svg, kNameSpaceID_SVG)) {
|
|
return subDocRoot; // SVG documents have an intrinsic size
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|