gecko/layout/generic/nsICanvasFrame.h
Benjamin Smedberg 24e7cb1f78 Bug 396185 - Make nsIFrame derivatives and helper abstract classes use a different dynamic-cast system than nsISupports:
* we know all types frames may be cast to at compile time, so instead of extensible GUID IIDs, use a big enum (see nsQueryFrame::FrameIID)
* eliminate all vestiges of refcounting, since frames aren't refcounted

Some frames (SVG frames in particular) still implement nsISupports-derived interfaces, for example nsISVGValue. There is a FrameIID for nsISVGValue that lets you go from a frame to the XPCOM interface, but you can't query back.

r+sr=roc

nsITextControlFrame didn't have an IID the first time around, but this wasn't a compile error because nsITextControlFrame::kFrameIID inherited from nsIFormControlFrame::kFrameIID. I've added a static analysis pass to verify the correct behavior, since I can't figure out a way to make the compiler do it.

--HG--
extra : rebase_source : 4894a2ca0278e2ab92f27459db77165f8348cf41
2009-01-12 14:20:59 -05:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
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/* interface to rendering object that lives inside the document scrollbars */
#ifndef nsICanvasFrame_h__
#define nsICanvasFrame_h__
#include "nsQueryFrame.h"
class nsICanvasFrame
{
public:
NS_DECLARE_FRAME_ACCESSOR(nsICanvasFrame)
/** SetHasFocus tells the CanvasFrame to draw with focus ring
* @param aHasFocus PR_TRUE to show focus ring, PR_FALSE to hide it
*/
NS_IMETHOD SetHasFocus(PRBool aHasFocus) = 0;
};
#endif // nsICanvasFrame_h__