mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
1ccfbe810b
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.
1113 lines
34 KiB
C++
1113 lines
34 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/*
|
|
* rendering object for replaced elements that contain a document, such
|
|
* as <frame>, <iframe>, and some <object>s
|
|
*/
|
|
|
|
#include "mozilla/layout/RenderFrameParent.h"
|
|
|
|
#include "nsSubDocumentFrame.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsGenericHTMLElement.h"
|
|
#include "nsAttrValueInlines.h"
|
|
#include "nsIDocShell.h"
|
|
#include "nsIDocShellLoadInfo.h"
|
|
#include "nsIDocShellTreeItem.h"
|
|
#include "nsIDocShellTreeNode.h"
|
|
#include "nsIDocShellTreeOwner.h"
|
|
#include "nsIBaseWindow.h"
|
|
#include "nsIContentViewer.h"
|
|
#include "nsPresContext.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsIComponentManager.h"
|
|
#include "nsFrameManager.h"
|
|
#include "nsIStreamListener.h"
|
|
#include "nsIURL.h"
|
|
#include "nsNetUtil.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIView.h"
|
|
#include "nsIViewManager.h"
|
|
#include "nsGkAtoms.h"
|
|
#include "nsStyleCoord.h"
|
|
#include "nsStyleContext.h"
|
|
#include "nsStyleConsts.h"
|
|
#include "nsFrameSetFrame.h"
|
|
#include "nsIDOMHTMLFrameElement.h"
|
|
#include "nsIDOMHTMLIFrameElement.h"
|
|
#include "nsIDOMXULElement.h"
|
|
#include "nsIScriptSecurityManager.h"
|
|
#include "nsXPIDLString.h"
|
|
#include "nsIScrollable.h"
|
|
#include "nsINameSpaceManager.h"
|
|
#include "nsWeakReference.h"
|
|
#include "nsIDOMWindow.h"
|
|
#include "nsDisplayList.h"
|
|
#include "nsUnicharUtils.h"
|
|
#include "nsIScrollableFrame.h"
|
|
#include "nsIObjectLoadingContent.h"
|
|
#include "nsLayoutUtils.h"
|
|
#include "FrameLayerBuilder.h"
|
|
#include "nsObjectFrame.h"
|
|
#include "nsIServiceManager.h"
|
|
#include "nsContentUtils.h"
|
|
#include "LayerTreeInvalidation.h"
|
|
|
|
// For Accessibility
|
|
#ifdef ACCESSIBILITY
|
|
#include "nsAccessibilityService.h"
|
|
#endif
|
|
|
|
using namespace mozilla;
|
|
using mozilla::layout::RenderFrameParent;
|
|
|
|
static nsIDocument*
|
|
GetDocumentFromView(nsIView* aView)
|
|
{
|
|
NS_PRECONDITION(aView, "");
|
|
|
|
nsIFrame* f = aView->GetFrame();
|
|
nsIPresShell* ps = f ? f->PresContext()->PresShell() : nullptr;
|
|
return ps ? ps->GetDocument() : nullptr;
|
|
}
|
|
|
|
class AsyncFrameInit;
|
|
|
|
nsSubDocumentFrame::nsSubDocumentFrame(nsStyleContext* aContext)
|
|
: nsLeafFrame(aContext)
|
|
, mIsInline(false)
|
|
, mPostedReflowCallback(false)
|
|
, mDidCreateDoc(false)
|
|
, mCallingShow(false)
|
|
{
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
already_AddRefed<Accessible>
|
|
nsSubDocumentFrame::CreateAccessible()
|
|
{
|
|
nsAccessibilityService* accService = nsIPresShell::AccService();
|
|
return accService ?
|
|
accService->CreateOuterDocAccessible(mContent, PresContext()->PresShell()) :
|
|
nullptr;
|
|
}
|
|
#endif
|
|
|
|
NS_QUERYFRAME_HEAD(nsSubDocumentFrame)
|
|
NS_QUERYFRAME_ENTRY(nsSubDocumentFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(nsLeafFrame)
|
|
|
|
class AsyncFrameInit : public nsRunnable
|
|
{
|
|
public:
|
|
AsyncFrameInit(nsIFrame* aFrame) : mFrame(aFrame) {}
|
|
NS_IMETHOD Run()
|
|
{
|
|
if (mFrame.IsAlive()) {
|
|
static_cast<nsSubDocumentFrame*>(mFrame.GetFrame())->ShowViewer();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
nsWeakFrame mFrame;
|
|
};
|
|
|
|
static void
|
|
InsertViewsInReverseOrder(nsIView* aSibling, nsIView* aParent);
|
|
|
|
static void
|
|
EndSwapDocShellsForViews(nsIView* aView);
|
|
|
|
NS_IMETHODIMP
|
|
nsSubDocumentFrame::Init(nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIFrame* aPrevInFlow)
|
|
{
|
|
// determine if we are a <frame> or <iframe>
|
|
if (aContent) {
|
|
nsCOMPtr<nsIDOMHTMLFrameElement> frameElem = do_QueryInterface(aContent);
|
|
mIsInline = frameElem ? false : true;
|
|
}
|
|
|
|
nsresult rv = nsLeafFrame::Init(aContent, aParent, aPrevInFlow);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// We are going to create an inner view. If we need a view for the
|
|
// OuterFrame but we wait for the normal view creation path in
|
|
// nsCSSFrameConstructor, then we will lose because the inner view's
|
|
// parent will already have been set to some outer view (e.g., the
|
|
// canvas) when it really needs to have this frame's view as its
|
|
// parent. So, create this frame's view right away, whether we
|
|
// really need it or not, and the inner view will get it as the
|
|
// parent.
|
|
if (!HasView()) {
|
|
rv = nsContainerFrame::CreateViewForFrame(this, true);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
EnsureInnerView();
|
|
|
|
// Set the primary frame now so that DocumentViewerImpl::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.
|
|
nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
|
|
if (frameloader) {
|
|
nsCOMPtr<nsIDocument> oldContainerDoc;
|
|
nsIView* detachedViews =
|
|
frameloader->GetDetachedSubdocView(getter_AddRefs(oldContainerDoc));
|
|
if (detachedViews) {
|
|
if (oldContainerDoc == aContent->OwnerDoc()) {
|
|
// Restore stashed presentation.
|
|
::InsertViewsInReverseOrder(detachedViews, mInnerView);
|
|
::EndSwapDocShellsForViews(mInnerView->GetFirstChild());
|
|
} else {
|
|
// Presentation is for a different document, don't restore it.
|
|
frameloader->Hide();
|
|
}
|
|
}
|
|
frameloader->SetDetachedSubdocView(nullptr, nullptr);
|
|
}
|
|
|
|
nsContentUtils::AddScriptRunner(new AsyncFrameInit(this));
|
|
return NS_OK;
|
|
}
|
|
|
|
inline int32_t ConvertOverflow(uint8_t aOverflow)
|
|
{
|
|
switch (aOverflow) {
|
|
case NS_STYLE_OVERFLOW_VISIBLE:
|
|
case NS_STYLE_OVERFLOW_AUTO:
|
|
return nsIScrollable::Scrollbar_Auto;
|
|
case NS_STYLE_OVERFLOW_HIDDEN:
|
|
case NS_STYLE_OVERFLOW_CLIP:
|
|
return nsIScrollable::Scrollbar_Never;
|
|
case NS_STYLE_OVERFLOW_SCROLL:
|
|
return nsIScrollable::Scrollbar_Always;
|
|
}
|
|
NS_NOTREACHED("invalid overflow value passed to ConvertOverflow");
|
|
return nsIScrollable::Scrollbar_Auto;
|
|
}
|
|
|
|
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 {
|
|
nsRefPtr<nsFrameLoader> frameloader = FrameLoader();
|
|
if (frameloader) {
|
|
nsIntSize margin = GetMarginAttributes();
|
|
const nsStyleDisplay* disp = GetStyleDisplay();
|
|
nsWeakFrame weakThis(this);
|
|
mCallingShow = true;
|
|
bool didCreateDoc =
|
|
frameloader->Show(margin.width, margin.height,
|
|
ConvertOverflow(disp->mOverflowX),
|
|
ConvertOverflow(disp->mOverflowY),
|
|
this);
|
|
if (!weakThis.IsAlive()) {
|
|
return;
|
|
}
|
|
mCallingShow = false;
|
|
mDidCreateDoc = didCreateDoc;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
nsSubDocumentFrame::GetSkipSides() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsSubDocumentFrame::GetSubdocumentRootFrame()
|
|
{
|
|
if (!mInnerView)
|
|
return nullptr;
|
|
nsIView* subdocView = mInnerView->GetFirstChild();
|
|
return subdocView ? subdocView->GetFrame() : nullptr;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
if (!IsVisibleForPainting(aBuilder))
|
|
return NS_OK;
|
|
|
|
if (aBuilder->IsForEventDelivery() &&
|
|
GetStyleVisibility()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE)
|
|
return NS_OK;
|
|
|
|
nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!mInnerView)
|
|
return NS_OK;
|
|
|
|
nsFrameLoader* frameLoader = FrameLoader();
|
|
if (frameLoader) {
|
|
RenderFrameParent* rfp = frameLoader->GetCurrentRemoteFrame();
|
|
if (rfp) {
|
|
return rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
|
|
}
|
|
}
|
|
|
|
nsIView* subdocView = mInnerView->GetFirstChild();
|
|
if (!subdocView)
|
|
return NS_OK;
|
|
|
|
nsCOMPtr<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() &&
|
|
!aBuilder->IsIgnoringPaintSuppression())) {
|
|
// 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.
|
|
nsIView* nextView = subdocView->GetNextSibling();
|
|
nsIFrame* frame = nullptr;
|
|
if (nextView) {
|
|
frame = nextView->GetFrame();
|
|
}
|
|
if (frame) {
|
|
nsIPresShell* ps = frame->PresContext()->PresShell();
|
|
if (!presShell || (ps && !ps->IsPaintingSuppressed())) {
|
|
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 NS_OK;
|
|
nsCOMPtr<nsIDocShell> docShell;
|
|
mFrameLoader->GetDocShell(getter_AddRefs(docShell));
|
|
if (!docShell)
|
|
return NS_OK;
|
|
docShell->GetPresShell(getter_AddRefs(presShell));
|
|
if (!presShell)
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
|
|
nsDisplayList childItems;
|
|
|
|
int32_t parentAPD = PresContext()->AppUnitsPerDevPixel();
|
|
int32_t subdocAPD = presContext->AppUnitsPerDevPixel();
|
|
|
|
nsRect dirty;
|
|
if (subdocRootFrame) {
|
|
nsIDocument* doc = subdocRootFrame->PresContext()->Document();
|
|
nsIContent* root = doc ? doc->GetRootElement() : nullptr;
|
|
nsRect displayPort;
|
|
if (root && nsLayoutUtils::GetDisplayPort(root, &displayPort)) {
|
|
dirty = displayPort;
|
|
} else {
|
|
// 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.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);
|
|
}
|
|
|
|
aBuilder->EnterPresShell(subdocRootFrame, dirty);
|
|
}
|
|
|
|
nsRect subdocBoundsInParentUnits =
|
|
mInnerView->GetBounds() + aBuilder->ToReferenceFrame(this);
|
|
|
|
if (subdocRootFrame) {
|
|
rv = 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;
|
|
if (subdocRootFrame) {
|
|
bounds = subdocBoundsInParentUnits.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);
|
|
} else {
|
|
bounds = subdocBoundsInParentUnits;
|
|
}
|
|
|
|
// 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)) {
|
|
rv = presShell->AddPrintPreviewBackgroundItem(
|
|
*aBuilder, childItems, subdocRootFrame ? subdocRootFrame : this,
|
|
bounds);
|
|
} else {
|
|
// 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;
|
|
rv = presShell->AddCanvasBackgroundColorItem(
|
|
*aBuilder, childItems, subdocRootFrame ? subdocRootFrame : this,
|
|
bounds, NS_RGBA(0,0,0,0), flags);
|
|
}
|
|
}
|
|
|
|
bool addedLayer = false;
|
|
|
|
if (subdocRootFrame && parentAPD != subdocAPD) {
|
|
NS_WARN_IF_FALSE(!addedLayer,
|
|
"Two container layers have been added. "
|
|
"Performance may suffer.");
|
|
addedLayer = true;
|
|
|
|
nsDisplayZoom* zoomItem =
|
|
new (aBuilder) nsDisplayZoom(aBuilder, subdocRootFrame, &childItems,
|
|
subdocAPD, parentAPD,
|
|
nsDisplayOwnLayer::GENERATE_SUBDOC_INVALIDATIONS);
|
|
childItems.AppendToTop(zoomItem);
|
|
}
|
|
|
|
if (!addedLayer && presContext->IsRootContentDocument()) {
|
|
// We always want top level content documents to be in their own layer.
|
|
nsDisplayOwnLayer* layerItem = new (aBuilder) nsDisplayOwnLayer(
|
|
aBuilder, subdocRootFrame ? subdocRootFrame : this,
|
|
&childItems, nsDisplayOwnLayer::GENERATE_SUBDOC_INVALIDATIONS);
|
|
childItems.AppendToTop(layerItem);
|
|
}
|
|
|
|
if (subdocRootFrame) {
|
|
aBuilder->LeavePresShell(subdocRootFrame, dirty);
|
|
}
|
|
|
|
if (ShouldClipSubdocument()) {
|
|
nsDisplayClip* item =
|
|
new (aBuilder) nsDisplayClip(aBuilder, this, &childItems,
|
|
subdocBoundsInParentUnits);
|
|
// Clip children to the child root frame's rectangle
|
|
childItems.AppendToTop(item);
|
|
}
|
|
|
|
if (mIsInline) {
|
|
WrapReplacedContentForBorderRadius(aBuilder, &childItems, aLists);
|
|
} else {
|
|
aLists.Content()->AppendToTop(&childItems);
|
|
}
|
|
|
|
// delete childItems in case of OOM
|
|
childItems.DeleteAll();
|
|
|
|
return rv;
|
|
}
|
|
|
|
nscoord
|
|
nsSubDocumentFrame::GetIntrinsicWidth()
|
|
{
|
|
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::GetIntrinsicHeight()
|
|
{
|
|
// <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
|
|
NS_IMETHODIMP
|
|
nsSubDocumentFrame::List(FILE* out, int32_t aIndent, uint32_t aFlags) const
|
|
{
|
|
IndentBy(out, aIndent);
|
|
ListTag(out);
|
|
#ifdef DEBUG_waterson
|
|
fprintf(out, " [parent=%p]", static_cast<void*>(mParent));
|
|
#endif
|
|
if (HasView()) {
|
|
fprintf(out, " [view=%p]", static_cast<void*>(GetView()));
|
|
}
|
|
fprintf(out, " {%d,%d,%d,%d}", mRect.x, mRect.y, mRect.width, mRect.height);
|
|
if (0 != mState) {
|
|
fprintf(out, " [state=%016llx]", (unsigned long long)mState);
|
|
}
|
|
nsIFrame* prevInFlow = GetPrevInFlow();
|
|
nsIFrame* nextInFlow = GetNextInFlow();
|
|
if (nullptr != prevInFlow) {
|
|
fprintf(out, " prev-in-flow=%p", static_cast<void*>(prevInFlow));
|
|
}
|
|
if (nullptr != nextInFlow) {
|
|
fprintf(out, " next-in-flow=%p", static_cast<void*>(nextInFlow));
|
|
}
|
|
fprintf(out, " [content=%p]", static_cast<void*>(mContent));
|
|
nsSubDocumentFrame* f = const_cast<nsSubDocumentFrame*>(this);
|
|
if (f->HasOverflowAreas()) {
|
|
nsRect overflowArea = f->GetVisualOverflowRect();
|
|
fprintf(out, " [vis-overflow=%d,%d,%d,%d]", overflowArea.x, overflowArea.y,
|
|
overflowArea.width, overflowArea.height);
|
|
overflowArea = f->GetScrollableOverflowRect();
|
|
fprintf(out, " [scr-overflow=%d,%d,%d,%d]", overflowArea.x, overflowArea.y,
|
|
overflowArea.width, overflowArea.height);
|
|
}
|
|
fprintf(out, " [sc=%p]", static_cast<void*>(mStyleContext));
|
|
fputs("\n", out);
|
|
|
|
if (aFlags & TRAVERSE_SUBDOCUMENT_FRAMES) {
|
|
nsIFrame* subdocRootFrame = f->GetSubdocumentRootFrame();
|
|
if (subdocRootFrame) {
|
|
subdocRootFrame->List(out, aIndent + 1);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP nsSubDocumentFrame::GetFrameName(nsAString& aResult) const
|
|
{
|
|
return MakeFrameName(NS_LITERAL_STRING("FrameOuter"), aResult);
|
|
}
|
|
#endif
|
|
|
|
nsIAtom*
|
|
nsSubDocumentFrame::GetType() const
|
|
{
|
|
return nsGkAtoms::subDocumentFrame;
|
|
}
|
|
|
|
/* virtual */ nscoord
|
|
nsSubDocumentFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_MIN_WIDTH(this, result);
|
|
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
result = subDocRoot->GetMinWidth(aRenderingContext);
|
|
} else {
|
|
result = GetIntrinsicWidth();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* virtual */ nscoord
|
|
nsSubDocumentFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
|
|
{
|
|
nscoord result;
|
|
DISPLAY_PREF_WIDTH(this, result);
|
|
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
result = subDocRoot->GetPrefWidth(aRenderingContext);
|
|
} else {
|
|
result = GetIntrinsicWidth();
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* virtual */ nsIFrame::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 */ nsSize
|
|
nsSubDocumentFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
|
|
nsSize aCBSize, nscoord aAvailableWidth,
|
|
nsSize aMargin, nsSize aBorder,
|
|
nsSize aPadding, bool aShrinkWrap)
|
|
{
|
|
if (!IsInline()) {
|
|
return nsFrame::ComputeAutoSize(aRenderingContext, aCBSize,
|
|
aAvailableWidth, aMargin, aBorder,
|
|
aPadding, aShrinkWrap);
|
|
}
|
|
|
|
return nsLeafFrame::ComputeAutoSize(aRenderingContext, aCBSize,
|
|
aAvailableWidth, aMargin, aBorder,
|
|
aPadding, aShrinkWrap);
|
|
}
|
|
|
|
|
|
/* virtual */ nsSize
|
|
nsSubDocumentFrame::ComputeSize(nsRenderingContext *aRenderingContext,
|
|
nsSize aCBSize, nscoord aAvailableWidth,
|
|
nsSize aMargin, nsSize aBorder, nsSize aPadding,
|
|
uint32_t aFlags)
|
|
{
|
|
nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame();
|
|
if (subDocRoot) {
|
|
return nsLayoutUtils::ComputeSizeWithIntrinsicDimensions(
|
|
aRenderingContext, this,
|
|
subDocRoot->GetIntrinsicSize(),
|
|
subDocRoot->GetIntrinsicRatio(),
|
|
aCBSize, aMargin, aBorder, aPadding);
|
|
}
|
|
return nsLeafFrame::ComputeSize(aRenderingContext, aCBSize, aAvailableWidth,
|
|
aMargin, aBorder, aPadding, aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
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");
|
|
|
|
// "offset" is the offset of our content area from our frame's
|
|
// top-left corner.
|
|
nsPoint offset(0, 0);
|
|
|
|
if (IsInline()) {
|
|
// XUL <iframe> or <browser>, or HTML <iframe>, <object> or <embed>
|
|
nsresult rv = nsLeafFrame::DoReflow(aPresContext, aDesiredSize, aReflowState,
|
|
aStatus);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
offset = nsPoint(aReflowState.mComputedBorderPadding.left,
|
|
aReflowState.mComputedBorderPadding.top);
|
|
} else {
|
|
// HTML <frame>
|
|
SizeToAvailSize(aReflowState, aDesiredSize);
|
|
}
|
|
|
|
nsSize innerSize(aDesiredSize.width, aDesiredSize.height);
|
|
if (IsInline()) {
|
|
innerSize.width -= aReflowState.mComputedBorderPadding.LeftRight();
|
|
innerSize.height -= aReflowState.mComputedBorderPadding.TopBottom();
|
|
}
|
|
|
|
if (mInnerView) {
|
|
nsIViewManager* 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);
|
|
return NS_OK;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
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 nsIView*
|
|
BeginSwapDocShellsForViews(nsIView* 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) {
|
|
nsIView* 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();
|
|
nsIFrame* rootFrame = shell ? shell->GetRootFrame() : nullptr;
|
|
if (rootFrame) {
|
|
::DestroyDisplayItemDataForFrames(rootFrame);
|
|
}
|
|
aDocument->EnumerateFreezableElements(
|
|
nsObjectFrame::BeginSwapDocShells, nullptr);
|
|
aDocument->EnumerateSubDocuments(BeginSwapDocShellsForDocument, nullptr);
|
|
return true;
|
|
}
|
|
|
|
static nsIView*
|
|
BeginSwapDocShellsForViews(nsIView* aSibling)
|
|
{
|
|
// Collect the removed sibling views in reverse order in 'removedViews'.
|
|
nsIView* removedViews = nullptr;
|
|
while (aSibling) {
|
|
nsIDocument* doc = ::GetDocumentFromView(aSibling);
|
|
if (doc) {
|
|
::BeginSwapDocShellsForDocument(doc, nullptr);
|
|
}
|
|
nsIView* next = aSibling->GetNextSibling();
|
|
aSibling->GetViewManager()->RemoveChild(aSibling);
|
|
aSibling->SetNextSibling(removedViews);
|
|
removedViews = aSibling;
|
|
aSibling = next;
|
|
}
|
|
return removedViews;
|
|
}
|
|
|
|
static void
|
|
InsertViewsInReverseOrder(nsIView* aSibling, nsIView* aParent)
|
|
{
|
|
NS_PRECONDITION(aParent, "");
|
|
NS_PRECONDITION(!aParent->GetFirstChild(), "inserting into non-empty list");
|
|
|
|
nsIViewManager* vm = aParent->GetViewManager();
|
|
while (aSibling) {
|
|
nsIView* 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;
|
|
}
|
|
|
|
NS_ASSERTION(HasAnyStateBits(NS_FRAME_IN_POPUP) == other->HasAnyStateBits(NS_FRAME_IN_POPUP),
|
|
"Can't swap doc shells when only one is within a popup!");
|
|
|
|
if (mInnerView && other->mInnerView) {
|
|
nsIView* ourSubdocViews = mInnerView->GetFirstChild();
|
|
nsIView* ourRemovedViews = ::BeginSwapDocShellsForViews(ourSubdocViews);
|
|
nsIView* otherSubdocViews = other->mInnerView->GetFirstChild();
|
|
nsIView* 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<nsISupports> container = aDocument->GetContainer();
|
|
nsCOMPtr<nsIDocShell> ds = do_QueryInterface(container);
|
|
if (ds) {
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
ds->GetContentViewer(getter_AddRefs(cv));
|
|
while (cv) {
|
|
nsCOMPtr<nsPresContext> pc;
|
|
cv->GetPresContext(getter_AddRefs(pc));
|
|
nsDeviceContext* dc = pc ? pc->DeviceContext() : nullptr;
|
|
if (dc) {
|
|
nsIView* v = cv->FindContainerView();
|
|
dc->Init(v ? v->GetNearestWidget(nullptr) : nullptr);
|
|
}
|
|
nsCOMPtr<nsIContentViewer> prev;
|
|
cv->GetPreviousViewer(getter_AddRefs(prev));
|
|
cv = prev;
|
|
}
|
|
}
|
|
|
|
aDocument->EnumerateFreezableElements(
|
|
nsObjectFrame::EndSwapDocShells, nullptr);
|
|
aDocument->EnumerateSubDocuments(EndSwapDocShellsForDocument, nullptr);
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
EndSwapDocShellsForViews(nsIView* aSibling)
|
|
{
|
|
for ( ; aSibling; aSibling = aSibling->GetNextSibling()) {
|
|
nsIDocument* doc = ::GetDocumentFromView(aSibling);
|
|
if (doc) {
|
|
::EndSwapDocShellsForDocument(doc, nullptr);
|
|
}
|
|
nsIFrame *frame = aSibling->GetFrame();
|
|
if (frame && frame->HasInvalidFrameInSubtree()) {
|
|
nsIFrame *parent = nsLayoutUtils::GetCrossDocParentFrame(frame);
|
|
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();
|
|
}
|
|
}
|
|
|
|
nsIView*
|
|
nsSubDocumentFrame::EnsureInnerView()
|
|
{
|
|
if (mInnerView) {
|
|
return mInnerView;
|
|
}
|
|
|
|
// create, init, set the parent of the view
|
|
nsIView* outerView = GetView();
|
|
NS_ASSERTION(outerView, "Must have an outer view already");
|
|
nsRect viewBounds(0, 0, 0, 0); // size will be fixed during reflow
|
|
|
|
nsIViewManager* viewMan = outerView->GetViewManager();
|
|
nsIView* 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(getter_AddRefs(presShell));
|
|
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;
|
|
}
|