Don't allow inserting symbols and foreign chars while in HTML source mode, b=104267, r=brade, sr=kin

editor/ui/dialogs/content/EdInsertChars.js

@@ -79,6 +79,16 @@ function onOK()
   //return true;
 }
 
+// Don't allow inserting in HTML Source Mode
+function onFocus()
+{
+  var enable = true;
+  if ("gEditorDisplayMode" in window.opener)
+    enable = !window.opener.IsInHTMLSourceMode();
+
+  SetElementEnabledById("ok", enable);
+}
+
 function Unload()
 {
   window.opener.InsertCharWindow = null;

editor/ui/dialogs/content/EdInsertChars.xul

@@ -35,6 +35,7 @@
     xmlns:html="http://www.w3.org/1999/xhtml"
     onload = "Startup()"
     onunload = "Unload()"
+    onfocus = "onFocus()"
     orient="vertical">
 
   <!-- Methods common to all editor dialogs -->