Bug #145798 --> Create Filter from Message is not doable when message pane is closed.

Porting to thunderbird

patch by mcow

mail/base/content/mail3PaneWindowCommands.js

@@ -259,17 +259,14 @@ var DefaultController =
           gDBView.getCommandStatus(nsMsgViewCommandType.toggleThreadWatched, enabled, checkStatus);
         return enabled.value;
       case "cmd_createFilterFromPopup":
+      case "cmd_createFilterFromMenu":
         var loadedFolder = GetLoadedMsgFolder();
         if (!(loadedFolder && loadedFolder.server.canHaveFilters))
-          return false;
-      case "cmd_createFilterFromMenu":
-        loadedFolder = GetLoadedMsgFolder();
-        if (!(loadedFolder && loadedFolder.server.canHaveFilters) || !(IsMessageDisplayedInMessagePane()))
-          return false;
+          return false;   // else fall thru
       case "cmd_saveAsFile":
       case "cmd_saveAsTemplate":
         if (GetNumSelectedMessages() > 1)
-          return false;
+          return false;   // else fall thru
       case "cmd_reply":
       case "button_reply":
       case "cmd_replySender":

mail/base/content/mailWindowOverlay.js

@@ -1004,21 +1004,15 @@ function MsgEditMessageAsNew()
 
 function MsgCreateFilter()
 {
-  var emailAddressNode;
+  // retrieve Sender direct from selected message's headers
+  var msgHdr = gDBView.hdrForFirstSelectedMessage;
+  var headerParser = Components.classes["@mozilla.org/messenger/headerparser;1"].getService(Components.interfaces.nsIMsgHeaderParser);
+  var emailAddress = headerParser.extractHeaderAddressMailboxes(null, msgHdr.author);
 
-  if (gCollapsedHeaderViewMode)
-    emailAddressNode = document.getElementById("collapsedfromValue");
-  else
-    emailAddressNode = document.getElementById("expandedfromBox").emailAddressNode;
-  
-  if (emailAddressNode)
-  {
-     var emailAddress = emailAddressNode.getTextAttribute("emailAddress");
-     if (emailAddress){
+  if (emailAddress)
     top.MsgFilters(emailAddress);
 }
-  }
-}
+
 
 function MsgHome(url)
 {