accessible/src/html/nsHTMLImageMapAccessible.h

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   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
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  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  14  *
  15  * The Original Code is mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Aaron Leventhal <aaronl@netscape.com> (original author)
  24  *   Alexander Surkov <surkov.alexander@gmail.com>
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either of the GNU General Public License Version 2 or later (the "GPL"),
  28  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  37  *
  38  * ***** END LICENSE BLOCK ***** */
  39
  40 #ifndef _nsHTMLAreaAccessible_H_
  41 #define _nsHTMLAreaAccessible_H_
  42
  43 #include "nsHTMLLinkAccessible.h"
  44 #include "nsHTMLImageAccessibleWrap.h"
  45
  46 #include "nsIDOMHTMLMapElement.h"
  47
  48 /**
  49  * Used for HTML image maps.
  50  */
  51 class nsHTMLImageMapAccessible : public nsHTMLImageAccessibleWrap
  52 {
  53 public:
  54   nsHTMLImageMapAccessible(nsIContent *aContent, nsIWeakReference *aShell,
  55                            nsIDOMHTMLMapElement *aMapElm);
  56
  57   // nsISupports and cycle collector
  58   NS_DECL_ISUPPORTS_INHERITED
  59
  60   // nsAccessible
  61   virtual PRUint32 NativeRole();
  62
  63   // HyperLinkAccessible
  64   virtual PRUint32 AnchorCount();
  65   virtual nsAccessible* GetAnchor(PRUint32 aAnchorIndex);
  66   virtual already_AddRefed<nsIURI> GetAnchorURI(PRUint32 aAnchorIndex);
  67
  68 protected:
  69
  70   // nsAccessible
  71   virtual void CacheChildren();
  72
  73 private:
  74   // Reference on linked map element if any.
  75   nsCOMPtr<nsIDOMHTMLMapElement> mMapElement;
  76 };
  77
  78
  79 /**
  80  * Accessible for image map areas - must be child of image.
  81  */
  82 class nsHTMLAreaAccessible : public nsHTMLLinkAccessible
  83 {
  84 public:
  85   using nsAccessible::GetChildAtPoint;
  86
  87   nsHTMLAreaAccessible(nsIContent *aContent, nsIWeakReference *aShell);
  88
  89   // nsIAccessible
  90   NS_IMETHOD GetDescription(nsAString& aDescription);
  91
  92   NS_IMETHOD GetBounds(PRInt32 *x, PRInt32 *y, PRInt32 *width, PRInt32 *height);
  93
  94   // nsAccessible
  95   virtual nsresult GetNameInternal(nsAString& aName);
  96   virtual nsresult GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState);
  97   virtual nsresult GetChildAtPoint(PRInt32 aX, PRInt32 aY,
  98                                    PRBool aDeepestChild,
  99                                    nsIAccessible **aChild);
 100
 101   // HyperLinkAccessible
 102   virtual PRUint32 StartOffset();
 103   virtual PRUint32 EndOffset();
 104
 105 protected:
 106
 107   // nsAccessible
 108   virtual void CacheChildren();
 109 };
 110
 111 #endif