From f2186c6cc2b359a0982c8c0988261c6f1425101d Mon Sep 17 00:00:00 2001
From: Fernando Herrera <fherrera@onirica.com>
Date: Thu, 3 Feb 2011 01:02:48 +0800
Subject: [PATCH] Bug 630841 - update text offsets when remove child from
 hypertext accessible, r=surkov, a=final

---
 accessible/src/html/nsHyperTextAccessible.cpp | 11 +++++++++++
 accessible/src/html/nsHyperTextAccessible.h   |  1 +
 2 files changed, 12 insertions(+)

diff --git a/accessible/src/html/nsHyperTextAccessible.cpp b/accessible/src/html/nsHyperTextAccessible.cpp
index ec07b613d3b..1e664f666b5 100644
--- a/accessible/src/html/nsHyperTextAccessible.cpp
+++ b/accessible/src/html/nsHyperTextAccessible.cpp
@@ -2093,6 +2093,17 @@ nsHyperTextAccessible::InvalidateChildren()
   nsAccessibleWrap::InvalidateChildren();
 }
 
+PRBool
+nsHyperTextAccessible::RemoveChild(nsAccessible* aAccessible)
+{
+  PRInt32 childIndex = aAccessible->GetIndexInParent();
+  PRInt32 count = mOffsets.Length() - childIndex;
+  if (count > 0)
+    mOffsets.RemoveElementsAt(childIndex, count);
+
+  return nsAccessible::RemoveChild(aAccessible);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // nsHyperTextAccessible public static
 
diff --git a/accessible/src/html/nsHyperTextAccessible.h b/accessible/src/html/nsHyperTextAccessible.h
index 804ff0cc6fd..81ac7fefe7c 100644
--- a/accessible/src/html/nsHyperTextAccessible.h
+++ b/accessible/src/html/nsHyperTextAccessible.h
@@ -90,6 +90,7 @@ public:
   virtual nsresult GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState);
 
   virtual void InvalidateChildren();
+  virtual PRBool RemoveChild(nsAccessible* aAccessible);
 
   // nsHyperTextAccessible (static helper method)