From 22b71d90a801f3c32b8f26fcebb49f1a4570ea6c Mon Sep 17 00:00:00 2001
From: "rbs%maths.uq.edu.au"
 <rbs%maths.uq.edu.au@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Mon, 7 Aug 2006 23:50:24 +0000
Subject: [PATCH] Fix bug 347348 - Removing text node from <mo> causes
 'ASSERTION: null arg' and has no visual effect, r+sr=roc

git-svn-id: svn://10.0.0.236/trunk@206789 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/layout/mathml/base/src/nsMathMLmoFrame.cpp | 7 +++++++
 mozilla/layout/mathml/base/src/nsMathMLmoFrame.h   | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/mozilla/layout/mathml/base/src/nsMathMLmoFrame.cpp b/mozilla/layout/mathml/base/src/nsMathMLmoFrame.cpp
index 243aefcf0c9..f9190b029da 100644
--- a/mozilla/layout/mathml/base/src/nsMathMLmoFrame.cpp
+++ b/mozilla/layout/mathml/base/src/nsMathMLmoFrame.cpp
@@ -974,6 +974,13 @@ nsMathMLmoFrame::ReflowDirtyChild(nsIPresShell* aPresShell,
   return ReLayoutChildren(target);
 }
 
+nsresult
+nsMathMLmoFrame::ChildListChanged(PRInt32 aModType)
+{
+  ProcessTextData(GetPresContext());
+  return nsMathMLContainerFrame::ChildListChanged(aModType);
+}
+
 NS_IMETHODIMP
 nsMathMLmoFrame::AttributeChanged(PRInt32         aNameSpaceID,
                                   nsIAtom*        aAttribute,
diff --git a/mozilla/layout/mathml/base/src/nsMathMLmoFrame.h b/mozilla/layout/mathml/base/src/nsMathMLmoFrame.h
index 75e3e68eb42..025bc5e5a23 100644
--- a/mozilla/layout/mathml/base/src/nsMathMLmoFrame.h
+++ b/mozilla/layout/mathml/base/src/nsMathMLmoFrame.h
@@ -84,6 +84,9 @@ public:
                    nsIAtom*        aAttribute,
                    PRInt32         aModType);
 
+  virtual nsresult
+  ChildListChanged(PRInt32 aModType);
+
   // This method is called by the parent frame to ask <mo> 
   // to stretch itself.
   NS_IMETHOD