accessible/html/HTMLImageMapAccessible.h

   1 /* -*- Mode: C++; tab-width: 2; 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/. */
   5
   6 #ifndef mozilla_a11y_HTMLImageMapAccessible_h__
   7 #define mozilla_a11y_HTMLImageMapAccessible_h__
   8
   9 #include "HTMLLinkAccessible.h"
  10 #include "ImageAccessibleWrap.h"
  11 #include "nsIDOMHTMLMapElement.h"
  12
  13 namespace mozilla {
  14 namespace a11y {
  15
  16 /**
  17  * Used for HTML image maps.
  18  */
  19 class HTMLImageMapAccessible MOZ_FINAL : public ImageAccessibleWrap
  20 {
  21 public:
  22   HTMLImageMapAccessible(nsIContent* aContent, DocAccessible* aDoc);
  23
  24   // nsISupports and cycle collector
  25   NS_DECL_ISUPPORTS_INHERITED
  26
  27   // Accessible
  28   virtual a11y::role NativeRole();
  29
  30   // HyperLinkAccessible
  31   virtual uint32_t AnchorCount();
  32   virtual Accessible* AnchorAt(uint32_t aAnchorIndex);
  33   virtual already_AddRefed<nsIURI> AnchorURIAt(uint32_t aAnchorIndex);
  34
  35   /**
  36    * Update area children of the image map.
  37    */
  38   void UpdateChildAreas(bool aDoFireEvents = true);
  39
  40   /**
  41    * Return accessible of child node.
  42    */
  43   Accessible* GetChildAccessibleFor(const nsINode* aNode) const;
  44
  45 protected:
  46   virtual ~HTMLImageMapAccessible() { }
  47
  48   // Accessible
  49   virtual void CacheChildren();
  50 };
  51
  52 /**
  53  * Accessible for image map areas - must be child of image.
  54  */
  55 class HTMLAreaAccessible MOZ_FINAL : public HTMLLinkAccessible
  56 {
  57 public:
  58
  59   HTMLAreaAccessible(nsIContent* aContent, DocAccessible* aDoc);
  60
  61   // Accessible
  62   virtual void Description(nsString& aDescription);
  63   virtual Accessible* ChildAtPoint(int32_t aX, int32_t aY,
  64                                    EWhichChildAtPoint aWhichChild);
  65   virtual void GetBoundsRect(nsRect& aBounds, nsIFrame** aBoundingFrame);
  66
  67   // HyperLinkAccessible
  68   virtual uint32_t StartOffset();
  69   virtual uint32_t EndOffset();
  70
  71 protected:
  72   // Accessible
  73   virtual ENameValueFlag NativeName(nsString& aName) MOZ_OVERRIDE;
  74   virtual void CacheChildren();
  75 };
  76
  77
  78 ////////////////////////////////////////////////////////////////////////////////
  79 // Accessible downcasting method
  80
  81 inline HTMLImageMapAccessible*
  82 Accessible::AsImageMap()
  83 {
  84   return IsImageMap() ? static_cast<HTMLImageMapAccessible*>(this) : nullptr;
  85 }
  86
  87 } // namespace a11y
  88 } // namespace mozilla
  89
  90 #endif