The Tor Browser: layout/generic/nsSubDocumentFrame.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef NSSUBDOCUMENTFRAME_H_

     7 #define NSSUBDOCUMENTFRAME_H_

     9 #include "mozilla/Attributes.h"

    10 #include "nsLeafFrame.h"

    11 #include "nsIReflowCallback.h"

    12 #include "nsFrameLoader.h"

    14 /******************************************************************************

    15  * nsSubDocumentFrame

    16  *****************************************************************************/

    17 class nsSubDocumentFrame : public nsLeafFrame,

    18                            public nsIReflowCallback

    19 {

    20 public:

    21   NS_DECL_QUERYFRAME_TARGET(nsSubDocumentFrame)

    22   NS_DECL_FRAMEARENA_HELPERS

    24   nsSubDocumentFrame(nsStyleContext* aContext);

    26 #ifdef DEBUG_FRAME_DUMP

    27   void List(FILE* out = stderr, const char* aPrefix = "", uint32_t aFlags = 0) const MOZ_OVERRIDE;

    28   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;

    29 #endif

    31   NS_DECL_QUERYFRAME

    33   virtual nsIAtom* GetType() const MOZ_OVERRIDE;

    35   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE

    36   {

    37     // nsLeafFrame is already eReplacedContainsBlock, but that's somewhat bogus

    38     return nsLeafFrame::IsFrameOfType(aFlags &

    39       ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));

    40   }

    42   virtual void Init(nsIContent*      aContent,

    43                     nsIFrame*        aParent,

    44                     nsIFrame*        aPrevInFlow) MOZ_OVERRIDE;

    46   virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;

    48   virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;

    49   virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;

    51   virtual mozilla::IntrinsicSize GetIntrinsicSize() MOZ_OVERRIDE;

    52   virtual nsSize  GetIntrinsicRatio() MOZ_OVERRIDE;

    54   virtual nsSize ComputeAutoSize(nsRenderingContext *aRenderingContext,

    55                                  nsSize aCBSize, nscoord aAvailableWidth,

    56                                  nsSize aMargin, nsSize aBorder,

    57                                  nsSize aPadding, bool aShrinkWrap) MOZ_OVERRIDE;

    59   virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,

    60                              nsSize aCBSize, nscoord aAvailableWidth,

    61                              nsSize aMargin, nsSize aBorder, nsSize aPadding,

    62                              uint32_t aFlags) MOZ_OVERRIDE;

    64   virtual nsresult Reflow(nsPresContext*          aPresContext,

    65                           nsHTMLReflowMetrics&     aDesiredSize,

    66                           const nsHTMLReflowState& aReflowState,

    67                           nsReflowStatus&          aStatus) MOZ_OVERRIDE;

    69   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,

    70                                 const nsRect&           aDirtyRect,

    71                                 const nsDisplayListSet& aLists) MOZ_OVERRIDE;

    73   virtual nsresult AttributeChanged(int32_t aNameSpaceID,

    74                                     nsIAtom* aAttribute,

    75                                     int32_t aModType) MOZ_OVERRIDE;

    77   // if the content is "visibility:hidden", then just hide the view

    78   // and all our contents. We don't extend "visibility:hidden" to

    79   // the child content ourselves, since it belongs to a different

    80   // document and CSS doesn't inherit in there.

    81   virtual bool SupportsVisibilityHidden() MOZ_OVERRIDE { return false; }

    83 #ifdef ACCESSIBILITY

    84   virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;

    85 #endif

    87   nsresult GetDocShell(nsIDocShell **aDocShell);

    88   nsresult BeginSwapDocShells(nsIFrame* aOther);

    89   void EndSwapDocShells(nsIFrame* aOther);

    90   nsView* EnsureInnerView();

    91   nsIFrame* GetSubdocumentRootFrame();

    92   nsIntSize GetSubdocumentSize();

    94   // nsIReflowCallback

    95   virtual bool ReflowFinished() MOZ_OVERRIDE;

    96   virtual void ReflowCallbackCanceled() MOZ_OVERRIDE;

    98   bool ShouldClipSubdocument()

    99   {

   100     nsFrameLoader* frameLoader = FrameLoader();

   101     return !frameLoader || frameLoader->ShouldClipSubdocument();

   102   }

   104   bool ShouldClampScrollPosition()

   105   {

   106     nsFrameLoader* frameLoader = FrameLoader();

   107     return !frameLoader || frameLoader->ShouldClampScrollPosition();

   108   }

   110   /**

   111    * Return true if pointer event hit-testing should be allowed to target

   112    * content in the subdocument.

   113    */

   114   bool PassPointerEventsToChildren();

   116 protected:

   117   friend class AsyncFrameInit;

   119   // Helper method to look up the HTML marginwidth & marginheight attributes

   120   nsIntSize GetMarginAttributes();

   122   nsFrameLoader* FrameLoader();

   124   bool IsInline() { return mIsInline; }

   126   virtual nscoord GetIntrinsicWidth() MOZ_OVERRIDE;

   127   virtual nscoord GetIntrinsicHeight() MOZ_OVERRIDE;

   129   // Show our document viewer. The document viewer is hidden via a script

   130   // runner, so that we can save and restore the presentation if we're

   131   // being reframed.

   132   void ShowViewer();

   134   /* Obtains the frame we should use for intrinsic size information if we are

   135    * an HTML <object>, <embed> or <applet> (a replaced element - not <iframe>)

   136    * and our sub-document has an intrinsic size. The frame returned is the

   137    * frame for the document element of the document we're embedding.

   138    *

   139    * Called "Obtain*" and not "Get*" because of comment on GetDocShell that

   140    * says it should be called ObtainDocShell because of it's side effects.

   141    */

   142   nsIFrame* ObtainIntrinsicSizeFrame();

   144   nsRefPtr<nsFrameLoader> mFrameLoader;

   145   nsView* mInnerView;

   146   bool mIsInline;

   147   bool mPostedReflowCallback;

   148   bool mDidCreateDoc;

   149   bool mCallingShow;

   150 };

   152 #endif /* NSSUBDOCUMENTFRAME_H_ */

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