Bug #315057 --> Display - Fonts tab: The pull-down menu of Character Encodings doesn't work.

build the menu popup by hand instead of using the xul template builder (which doesn't work with dynamic
overlays)

sr=bienvenu

mail/components/preferences/display.js

@@ -44,6 +44,12 @@ var gDisplayPane = {
     var preference = document.getElementById("mail.preferences.display.selectedTabIndex");
     if (preference.value)
       document.getElementById("displayPrefs").selectedIndex = preference.value;
+
+      // build the charset menu list. We do this by hand instead of using the xul template
+      // builder because of Bug #285076, 
+      this.createCharsetMenus(document.getElementById("viewDefaultCharset-menupopup"), "NC:DecodersRoot",
+                              document.getElementById('mailnews.view_default_charset').value);
+
     this.mInitialized = true;
   },
 
@@ -75,6 +81,44 @@ var gDisplayPane = {
     document.documentElement.openSubDialog("chrome://messenger/content/preferences/fonts.xul", "", null);  
   },
 
+  addMenuItem: function(aMenuPopup, aLabel, aValue)
+  { 
+    var menuItem = document.createElement('menuitem');
+    menuItem.setAttribute('label', aLabel);
+    menuItem.setAttribute('value', aValue);
+    aMenuPopup.appendChild(menuItem);
+  },
+
+  readRDFString: function(aDS,aRes,aProp) 
+  {
+    var n = aDS.GetTarget(aRes, aProp, true);
+    return (n) ? n.QueryInterface(Components.interfaces.nsIRDFLiteral).Value : "";
+  },
+
+  createCharsetMenus: function(aMenuPopup, aRoot, aPreferenceValue)
+  {
+    var rdfService = Components.classes["@mozilla.org/rdf/rdf-service;1"]
+                     .getService(Components.interfaces.nsIRDFService);
+    var kNC_Root = rdfService.GetResource(aRoot);
+    var kNC_Name = rdfService.GetResource("http://home.netscape.com/NC-rdf#Name");
+
+    var rdfDataSource = rdfService.GetDataSource("rdf:charset-menu");
+    var rdfContainer = Components.classes["@mozilla.org/rdf/container;1"].getService(Components.interfaces.nsIRDFContainer);
+    rdfContainer.Init(rdfDataSource, kNC_Root);
+
+    var charset;
+    var availableCharsets = rdfContainer.GetElements();
+
+    for (var i = 0; i < rdfContainer.GetCount(); i++) 
+    {
+      charset = availableCharsets.getNext().QueryInterface(Components.interfaces.nsIRDFResource);
+
+      this.addMenuItem(aMenuPopup, this.readRDFString(rdfDataSource, charset, kNC_Name), charset.Value);
+      if (charset.Value == aPreferenceValue)
+        aMenuPopup.parentNode.value = charset.Value;
+    }         
+  },
+  
   mCharsetMenuInitialized: false,
   readDefaultCharset: function()
   {
@@ -83,6 +127,10 @@ var gDisplayPane = {
       Components.classes["@mozilla.org/observer-service;1"]
                 .getService(Components.interfaces.nsIObserverService)
                 .notifyObservers(null, "charsetmenu-selected", "mailedit");
+      // build the charset menu list. We do this by hand instead of using the xul template
+      // builder because of Bug #285076, 
+      this.createCharsetMenus(document.getElementById("sendDefaultCharset-menupopup"), "NC:MaileditCharsetMenuRoot",
+                              document.getElementById('mailnews.send_default_charset').value);
       this.mCharsetMenuInitialized = true;
     }
     return undefined;

mail/components/preferences/display.xul

@@ -229,26 +229,19 @@
                 <row align="center" class="indent">
                   <label control="sendDefaultCharsetList"
                          value="&sendDefaultCharset.label;" accesskey="&sendDefaultCharset.accesskey;"/>
-                  <menulist id="sendDefaultCharsetList" ref="NC:MaileditCharsetMenuRoot" datasources="rdf:charset-menu"
-                            preference="mailnews.send_default_charset" onsyncfrompreference="return gDisplayPane.readDefaultCharset();">
-                    <template>
-                      <menupopup>
-                        <menuitem label="rdf:http://home.netscape.com/NC-rdf#Name" value="..." uri="..."/>
+
+                  <menulist id="sendDefaultCharsetList" flex="1" preference="mailnews.send_default_charset" onsyncfrompreference="return gDisplayPane.readDefaultCharset();">
+                    <menupopup id="sendDefaultCharset-menupopup">
                     </menupopup>
-                    </template>
                   </menulist>
                 </row> 
         
                 <row align="center" class="indent">
                   <label control="viewDefaultCharsetList"
                          value="&viewDefaultCharsetList.label;" accesskey="&viewDefaultCharsetList.accesskey;"/>
-                  <menulist id="viewDefaultCharsetList" ref="NC:DecodersRoot" datasources="rdf:charset-menu"
-                            preference="mailnews.view_default_charset">
-                    <template>
-                      <menupopup>
-                        <menuitem label="rdf:http://home.netscape.com/NC-rdf#Name" value="..." uri="..."/>
+                  <menulist id="viewDefaultCharsetList" preference="mailnews.view_default_charset">
+                    <menupopup id="viewDefaultCharset-menupopup">
                     </menupopup>
-                    </template>
                   </menulist>
                 </row>
               </rows>