gecko-dev/layout/generic/nsSubDocumentFrame.h

154 lines
5.3 KiB
C++

/* -*- 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 "nsLeafFrame.h"
#include "nsIReflowCallback.h"
#include "nsFrameLoader.h"
/******************************************************************************
* nsSubDocumentFrame
*****************************************************************************/
class nsSubDocumentFrame : public nsLeafFrame,
public nsIReflowCallback
{
public:
NS_DECL_QUERYFRAME_TARGET(nsSubDocumentFrame)
NS_DECL_FRAMEARENA_HELPERS
nsSubDocumentFrame(nsStyleContext* aContext);
#ifdef DEBUG
NS_IMETHOD List(FILE* out, int32_t aIndent, uint32_t aFlags = 0) const;
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
NS_DECL_QUERYFRAME
virtual nsIAtom* GetType() const;
virtual bool IsFrameOfType(uint32_t aFlags) const
{
// nsLeafFrame is already eReplacedContainsBlock, but that's somewhat bogus
return nsLeafFrame::IsFrameOfType(aFlags &
~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
}
NS_IMETHOD Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow);
virtual void DestroyFrom(nsIFrame* aDestructRoot);
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
virtual IntrinsicSize GetIntrinsicSize();
virtual nsSize GetIntrinsicRatio();
virtual nsSize ComputeAutoSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder,
nsSize aPadding, bool aShrinkWrap);
virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder, nsSize aPadding,
uint32_t aFlags) MOZ_OVERRIDE;
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus) MOZ_OVERRIDE;
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists) MOZ_OVERRIDE;
NS_IMETHOD AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType);
// 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() { return false; }
#ifdef ACCESSIBILITY
virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;
#endif
nsresult GetDocShell(nsIDocShell **aDocShell);
nsresult BeginSwapDocShells(nsIFrame* aOther);
void EndSwapDocShells(nsIFrame* aOther);
nsIView* EnsureInnerView();
nsIFrame* GetSubdocumentRootFrame();
// nsIReflowCallback
virtual bool ReflowFinished() MOZ_OVERRIDE;
virtual void ReflowCallbackCanceled() MOZ_OVERRIDE;
bool ShouldClipSubdocument()
{
nsFrameLoader* frameLoader = FrameLoader();
return !frameLoader || frameLoader->ShouldClipSubdocument();
}
bool ShouldClampScrollPosition()
{
nsFrameLoader* frameLoader = FrameLoader();
return !frameLoader || frameLoader->ShouldClampScrollPosition();
}
protected:
friend class AsyncFrameInit;
// Helper method to look up the HTML marginwidth & marginheight attributes
nsIntSize GetMarginAttributes();
nsFrameLoader* FrameLoader();
bool IsInline() { return mIsInline; }
virtual nscoord GetIntrinsicWidth() MOZ_OVERRIDE;
virtual nscoord GetIntrinsicHeight() MOZ_OVERRIDE;
virtual int GetSkipSides() const;
// 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 it's side effects.
*/
nsIFrame* ObtainIntrinsicSizeFrame();
/**
* Return true if pointer event hit-testing should be allowed to target
* content in the subdocument.
*/
bool PassPointerEventsToChildren();
nsRefPtr<nsFrameLoader> mFrameLoader;
nsIView* mInnerView;
bool mIsInline;
bool mPostedReflowCallback;
bool mDidCreateDoc;
bool mCallingShow;
};
#endif /* NSSUBDOCUMENTFRAME_H_ */