accessible/src/msaa/nsHTMLWin32ObjectAccessible.h

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  20  * the Initial Developer. All Rights Reserved.
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  22  * Contributor(s):
  23  *   John Gaunt (jgaunt@netscape.com) (original author)
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  38
  39 #ifndef _nsHTMLWin32ObjectAccessible_H_
  40 #define _nsHTMLWin32ObjectAccessible_H_
  41
  42 #include "nsIAccessibleWin32Object.h"
  43 #include "nsBaseWidgetAccessible.h"
  44
  45 struct IAccessible;
  46
  47 class nsHTMLWin32ObjectOwnerAccessible : public nsAccessibleWrap
  48 {
  49 public:
  50   // This will own the nsHTMLWin32ObjectAccessible. We create this where the
  51   // <object> or <embed> exists in the tree, so that get_accNextSibling() etc.
  52   // will still point to Gecko accessible sibling content. This is necessary
  53   // because the native plugin accessible doesn't know where it exists in the
  54   // Mozilla tree, and returns null for previous and next sibling. This would
  55   // have the effect of cutting off all content after the plugin.
  56   nsHTMLWin32ObjectOwnerAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell, void* aHwnd);
  57   virtual ~nsHTMLWin32ObjectOwnerAccessible() {}
  58   NS_IMETHOD Shutdown();
  59   NS_IMETHOD GetFirstChild(nsIAccessible **aFirstChild);
  60   NS_IMETHOD GetLastChild(nsIAccessible **aLastChild);
  61   NS_IMETHOD GetChildCount(PRInt32 *aChildCount);  // Zero or one child
  62
  63 protected:
  64   void* mHwnd;
  65   nsCOMPtr<nsIAccessible> mNativeAccessible;
  66 };
  67
  68 /**
  69   * This class is used only internally, we never! send out an IAccessible linked
  70   *   back to this object. This class is used to represent a plugin object when
  71   *   referenced as a child or sibling of another nsAccessible node. We need only
  72   *   a limited portion of the nsIAccessible interface implemented here. The
  73   *   in depth accessible information will be returned by the actual IAccessible
  74   *   object returned by us in Accessible::NewAccessible() that gets the IAccessible
  75   *   from the windows system from the window handle.
  76   */
  77 class nsHTMLWin32ObjectAccessible : public nsLeafAccessible,
  78                                     public nsIAccessibleWin32Object
  79 {
  80 public:
  81
  82   nsHTMLWin32ObjectAccessible(void* aHwnd);
  83   virtual ~nsHTMLWin32ObjectAccessible() {}
  84
  85   NS_DECL_ISUPPORTS_INHERITED
  86   NS_DECL_NSIACCESSIBLEWIN32OBJECT
  87
  88 protected:
  89   void* mHwnd;
  90 };
  91
  92 #endif