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Diffstat (limited to 'layout/generic/nsSubDocumentFrame.h')
| -rw-r--r-- | layout/generic/nsSubDocumentFrame.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/layout/generic/nsSubDocumentFrame.h b/layout/generic/nsSubDocumentFrame.h new file mode 100644 index 000000000..54f08d4fe --- /dev/null +++ b/layout/generic/nsSubDocumentFrame.h @@ -0,0 +1,168 @@ +/* -*- Mode: C++; tab-width: 20; 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/. */ + +#ifndef NSSUBDOCUMENTFRAME_H_ +#define NSSUBDOCUMENTFRAME_H_ + +#include "mozilla/Attributes.h" +#include "nsAtomicContainerFrame.h" +#include "nsIReflowCallback.h" +#include "nsFrameLoader.h" +#include "Units.h" + +/****************************************************************************** + * nsSubDocumentFrame + *****************************************************************************/ +class nsSubDocumentFrame : public nsAtomicContainerFrame, + public nsIReflowCallback +{ +public: + NS_DECL_QUERYFRAME_TARGET(nsSubDocumentFrame) + NS_DECL_FRAMEARENA_HELPERS + + explicit nsSubDocumentFrame(nsStyleContext* aContext); + +#ifdef DEBUG_FRAME_DUMP + void List(FILE* out = stderr, const char* aPrefix = "", uint32_t aFlags = 0) const override; + virtual nsresult GetFrameName(nsAString& aResult) const override; +#endif + + NS_DECL_QUERYFRAME + + virtual nsIAtom* GetType() const override; + + virtual bool IsFrameOfType(uint32_t aFlags) const override + { + return nsAtomicContainerFrame::IsFrameOfType(aFlags & + ~(nsIFrame::eReplaced | + nsIFrame::eReplacedSizing | + nsIFrame::eReplacedContainsBlock)); + } + + virtual void Init(nsIContent* aContent, + nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) override; + + virtual void DestroyFrom(nsIFrame* aDestructRoot) override; + + virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override; + virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override; + + virtual mozilla::IntrinsicSize GetIntrinsicSize() override; + virtual nsSize GetIntrinsicRatio() override; + + virtual mozilla::LogicalSize + ComputeAutoSize(nsRenderingContext* aRenderingContext, + mozilla::WritingMode aWritingMode, + const mozilla::LogicalSize& aCBSize, + nscoord aAvailableISize, + const mozilla::LogicalSize& aMargin, + const mozilla::LogicalSize& aBorder, + const mozilla::LogicalSize& aPadding, + ComputeSizeFlags aFlags) override; + + virtual mozilla::LogicalSize + ComputeSize(nsRenderingContext* aRenderingContext, + mozilla::WritingMode aWritingMode, + const mozilla::LogicalSize& aCBSize, + nscoord aAvailableISize, + const mozilla::LogicalSize& aMargin, + const mozilla::LogicalSize& aBorder, + const mozilla::LogicalSize& aPadding, + ComputeSizeFlags aFlags) override; + + virtual void Reflow(nsPresContext* aPresContext, + ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) override; + + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsRect& aDirtyRect, + const nsDisplayListSet& aLists) override; + + virtual nsresult AttributeChanged(int32_t aNameSpaceID, + nsIAtom* aAttribute, + int32_t aModType) override; + + // if the content is "visibility:hidden", then just hide the view + // and all our contents. We don't extend "visibility:hidden" to + // the child content ourselves, since it belongs to a different + // document and CSS doesn't inherit in there. + virtual bool SupportsVisibilityHidden() override { return false; } + +#ifdef ACCESSIBILITY + virtual mozilla::a11y::AccType AccessibleType() override; +#endif + + nsresult GetDocShell(nsIDocShell **aDocShell); + nsresult BeginSwapDocShells(nsIFrame* aOther); + void EndSwapDocShells(nsIFrame* aOther); + nsView* EnsureInnerView(); + nsIFrame* GetSubdocumentRootFrame(); + enum { + IGNORE_PAINT_SUPPRESSION = 0x1 + }; + nsIPresShell* GetSubdocumentPresShellForPainting(uint32_t aFlags); + mozilla::ScreenIntSize GetSubdocumentSize(); + + // nsIReflowCallback + virtual bool ReflowFinished() override; + virtual void ReflowCallbackCanceled() override; + + bool ShouldClipSubdocument() + { + nsFrameLoader* frameLoader = FrameLoader(); + return !frameLoader || frameLoader->ShouldClipSubdocument(); + } + + bool ShouldClampScrollPosition() + { + nsFrameLoader* frameLoader = FrameLoader(); + return !frameLoader || frameLoader->ShouldClampScrollPosition(); + } + + /** + * Return true if pointer event hit-testing should be allowed to target + * content in the subdocument. + */ + bool PassPointerEventsToChildren(); + +protected: + friend class AsyncFrameInit; + + // Helper method to look up the HTML marginwidth & marginheight attributes. + mozilla::CSSIntSize GetMarginAttributes(); + + nsFrameLoader* FrameLoader(); + + bool IsInline() { return mIsInline; } + + nscoord GetIntrinsicISize(); + nscoord GetIntrinsicBSize(); + + // Show our document viewer. The document viewer is hidden via a script + // runner, so that we can save and restore the presentation if we're + // being reframed. + void ShowViewer(); + + /* Obtains the frame we should use for intrinsic size information if we are + * an HTML <object>, <embed> or <applet> (a replaced element - not <iframe>) + * and our sub-document has an intrinsic size. The frame returned is the + * frame for the document element of the document we're embedding. + * + * Called "Obtain*" and not "Get*" because of comment on GetDocShell that + * says it should be called ObtainDocShell because of its side effects. + */ + nsIFrame* ObtainIntrinsicSizeFrame(); + + RefPtr<nsFrameLoader> mFrameLoader; + nsView* mInnerView; + bool mIsInline; + bool mPostedReflowCallback; + bool mDidCreateDoc; + bool mCallingShow; +}; + +#endif /* NSSUBDOCUMENTFRAME_H_ */ |