Bug 708144 - Make sure to update the Mac accessible tree. r=tbsaunde landing on a CLOSED TREE

accessible/src/base/nsOuterDocAccessible.cpp

@@ -187,7 +187,7 @@ nsOuterDocAccessible::AppendChild(nsAccessible *aAccessible)
   if (mChildren.Length())
     mChildren[0]->Shutdown();
 
-  if (!nsAccessible::AppendChild(aAccessible))
+  if (!nsAccessibleWrap::AppendChild(aAccessible))
     return false;
 
   NS_LOG_ACCDOCCREATE("append document to outerdoc",
@@ -210,7 +210,7 @@ nsOuterDocAccessible::RemoveChild(nsAccessible *aAccessible)
                            child->GetDocumentNode(), child)
   NS_LOG_ACCDOCDESTROY_ACCADDRESS("outerdoc", this)
 
-  bool wasRemoved = nsAccessible::RemoveChild(child);
+  bool wasRemoved = nsAccessibleWrap::RemoveChild(child);
 
   NS_ASSERTION(!mChildren.Length(),
                "This child document of outerdoc accessible wasn't removed!");

accessible/src/mac/mozAccessible.h

@@ -130,6 +130,11 @@
 // invalidates and removes all our children from our cached array.
 - (void)invalidateChildren;
 
+/** 
+ * Append a child if they are already cached.
+ */
+- (void)appendChild:(nsAccessible*)aAccessible;
+
 // invalidates the cached parent, used by invalidateChildren.
 - (void)invalidateParent;
 

accessible/src/mac/mozAccessible.mm

@@ -615,6 +615,17 @@ GetNativeFromGeckoAccessible(nsIAccessible *anAccessible)
   NS_OBJC_END_TRY_ABORT_BLOCK;
 }
 
+- (void)appendChild:(nsAccessible*)aAccessible
+{
+  // if mChildren is nil, then we don't even need to bother
+  if (!mChildren)
+    return;
+    
+  mozAccessible *curNative = GetNativeFromGeckoAccessible(aAccessible);
+  if (curNative)
+    [mChildren addObject:GetObjectOrRepresentedView(curNative)];
+}
+
 - (void)invalidateParent
 {
   mParent = nil;

accessible/src/mac/nsAccessibleWrap.h

@@ -61,33 +61,45 @@
 
 class nsAccessibleWrap : public nsAccessible
 {
-  public: // construction, destruction
-    nsAccessibleWrap(nsIContent *aContent, nsIWeakReference *aShell);
+public: // construction, destruction
+  nsAccessibleWrap(nsIContent* aContent, nsIWeakReference* aShell);
   virtual ~nsAccessibleWrap();
     
-    // get the native obj-c object (mozAccessible)
-    NS_IMETHOD GetNativeInterface (void **aOutAccessible);
+  /**
+   * Get the native Obj-C object (mozAccessible).
+   */
+  NS_IMETHOD GetNativeInterface (void** aOutAccessible);
   
-    // the objective-c |Class| type that this accessible's native object
-    // should be instantied with.   used on runtime to determine the
-    // right type for this accessible's associated native object.
+  /**
+   * The objective-c |Class| type that this accessible's native object
+   * should be instantied with.   used on runtime to determine the
+   * right type for this accessible's associated native object.
+   */
   virtual Class GetNativeType ();
 
   virtual void Shutdown ();
   virtual void InvalidateChildren();
 
+  virtual bool AppendChild(nsAccessible* aAccessible);
+  virtual bool RemoveChild(nsAccessible* aAccessible);
+
   virtual nsresult HandleAccEvent(AccEvent* aEvent);
 
-    // ignored means that the accessible might still have children, but is not displayed
-    // to the user. it also has no native accessible object represented for it.
+  /**
+   * Ignored means that the accessible might still have children, but is not
+   * displayed to the user. it also has no native accessible object represented
+   * for it.
+   */
   bool IsIgnored();
   
-    bool HasPopup () {
-      return (NativeState() & mozilla::a11y::states::HASPOPUP);
-    }
+  inline bool HasPopup () 
+    { return (NativeState() & mozilla::a11y::states::HASPOPUP); }
   
-    // return this accessible's all children, adhering to "flat" accessibles by not returning their children.
-    void GetUnignoredChildren(nsTArray<nsRefPtr<nsAccessibleWrap> > &aChildrenArray);
+  /**
+   * Returns this accessible's all children, adhering to "flat" accessibles by 
+   * not returning their children.
+   */
+  void GetUnignoredChildren(nsTArray<nsRefPtr<nsAccessibleWrap> >& aChildrenArray);
   virtual already_AddRefed<nsIAccessible> GetUnignoredParent();
     
 protected:
@@ -112,7 +124,8 @@ private:
 
   /**
    * Our native object. Private because its creation is done lazily.
-   * Don't access it directly. Ever. Unless you are GetNativeObject() or Shutdown()
+   * Don't access it directly. Ever. Unless you are GetNativeObject() or 
+   * Shutdown()
    */
 #if defined(__OBJC__)
   // if we are in Objective-C, we use the actual Obj-C class.

accessible/src/mac/nsAccessibleWrap.mm

@@ -208,6 +208,28 @@ nsAccessibleWrap::InvalidateChildren()
   NS_OBJC_END_TRY_ABORT_BLOCK;
 }
 
+bool
+nsAccessibleWrap::AppendChild(nsAccessible *aAccessible)
+{
+  bool appended = nsAccessible::AppendChild(aAccessible);
+  
+  if (appended && mNativeObject)
+    [mNativeObject appendChild:aAccessible];
+
+  return appended;
+}
+
+bool
+nsAccessibleWrap::RemoveChild(nsAccessible *aAccessible)
+{
+  bool removed = nsAccessible::RemoveChild(aAccessible);
+
+  if (removed && mNativeObject)
+    [mNativeObject invalidateChildren];
+
+  return removed;
+}
+
 // if we for some reason have no native accessible, we should be skipped over (and traversed)
 // when fetching all unignored children, etc.  when counting unignored children, we will not be counted.
 bool