bug 1270916 - allow tracking in an accessible if it has a pending show / hide / reorder event r=davidb

accessible/generic/Accessible.cpp

@@ -109,7 +109,8 @@ Accessible::Accessible(nsIContent* aContent, DocAccessible* aDoc) :
   mContent(aContent), mDoc(aDoc),
   mParent(nullptr), mIndexInParent(-1),
   mRoleMapEntryIndex(aria::NO_ROLE_MAP_ENTRY_INDEX),
-  mStateFlags(0), mContextFlags(0), mType(0), mGenericTypes(0)
+  mStateFlags(0), mContextFlags(0), mType(0), mGenericTypes(0),
+  mReorderEventTarget(false), mShowEventTarget(false), mHideEventTarget(false)
 {
   mBits.groupInfo = nullptr;
   mInt.mIndexOfEmbeddedChild = -1;

accessible/generic/Accessible.h

@@ -956,6 +956,36 @@ public:
    */
   bool IsInsideAlert() const { return mContextFlags & eInsideAlert; }
 
+  /**
+   * Return true if there is a pending reorder event for this accessible.
+   */
+  bool ReorderEventTarget() const { return mReorderEventTarget; }
+
+  /**
+   * Return true if there is a pending show event for this accessible.
+   */
+  bool ShowEventTarget() const { return mShowEventTarget; }
+
+  /**
+   * Return true if there is a pending hide event for this accessible.
+   */
+  bool HideEventTarget() const { return mHideEventTarget; }
+
+  /**
+   * Set if there is a pending reorder event for this accessible.
+   */
+  void SetReorderEventTarget(bool aTarget) { mReorderEventTarget = aTarget; }
+
+  /**
+   * Set if this accessible is a show event target.
+   */
+  void SetShowEventTarget(bool aTarget) { mShowEventTarget = aTarget; }
+
+  /**
+   * Set if this accessible is a hide event target.
+   */
+  void SetHideEventTarget(bool aTarget) { mHideEventTarget = aTarget; }
+
 protected:
   virtual ~Accessible();
 
@@ -1132,6 +1162,9 @@ protected:
   uint32_t mContextFlags : kContextFlagsBits;
   uint32_t mType : kTypeBits;
   uint32_t mGenericTypes : kGenericTypesBits;
+  uint32_t mReorderEventTarget : 1;
+  uint32_t mShowEventTarget : 1;
+  uint32_t mHideEventTarget : 1;
 
   void StaticAsserts() const;