bug #80220 --> show a tooltip over long attachments

Bug #79584 --> remove the .Print option from the attachment popup.
r/sr=sspitzer

mailnews/base/resources/content/messenger.xul

@@ -117,6 +117,7 @@ Rights Reserved.
   <popup id="threadPaneContext"/>
   <popup id="folderPaneContext"/>
   <popup id="attachmentTreeContext"/>
+  <popup id="attachmentTreeTooltip"/>
 
   <popup id="emailAddressPopup" popupanchor="bottomleft">
       <menuitem label="&AddToAddressBook.label;"

mailnews/base/resources/content/msgHdrViewOverlay.js

@@ -788,17 +788,18 @@ function displayAttachmentsForExpandedView()
       // we need to create a tree item, a tree row and a tree cell to insert the attachment
       // into the attachment tree..
 
-		  item = document.createElement("treeitem");
-		  row = document.createElement("treerow");
-		  cell = document.createElement("treecell");
+	  item = document.createElement("treeitem");
+	  row = document.createElement("treerow");
+	  cell = document.createElement("treecell");
 
       cell.setAttribute('class', "treecell-iconic"); 
-     	cell.setAttribute("label", attachment.displayName);
+      cell.setAttribute("label", attachment.displayName);
+      cell.setAttribute("tooltip", "attachmentTreeTooltip");
       item.setAttribute("commandSuffix", generateCommandSuffixForAttachment(attachment)); // set the command suffix on the tree item...
       setApplicationIconForAttachment(attachment, cell);
-		  row.appendChild(cell);
-		  item.appendChild(row);
-		  attachmentList.appendChild(item);
+	  row.appendChild(cell);
+	  item.appendChild(row);
+	  attachmentList.appendChild(item);
     } // for each attachment
     gBuildAttachmentsForCurrentMsg = true;
   }
@@ -832,6 +833,15 @@ function displayAttachmentsForCollapsedView()
   }
 }
 
+// Public method called to generate a tooltip over an attachment
+function FillInAttachmentTooltip(cellNode)
+{
+  var attachmentName = cellNode.getAttribute("label");
+  var textNode = document.getElementById("attachmentTreeTooltipText");
+  textNode.setAttribute('value', attachmentName);
+  return true;
+}
+
 // Public method called when we create the attachments file menu
 function FillAttachmentListPopup(popup)
 {

mailnews/base/resources/content/msgHdrViewOverlay.xul

@@ -36,8 +36,6 @@ Rights Reserved.
      oncommand="handleAttachmentSelection('openAttachment');"/>
   <menuitem id="context-saveAttachment" label="&saveAsAttachmentCmd.label;" accesskey="&saveAsAttachmentCmd.accesskey;"
      oncommand="handleAttachmentSelection('saveAttachment');"/>
-  <menuitem id="context-printAttachment" disabled="true" label="&printAttachmentCmd.label;" accesskey="&printAttachmentCmd.accesskey;"
-    oncommand="handleAttachmentSelection('printAttachment');"/>
   <menuseparator/>
   <menuitem id="context-saveAllAttachments" oncommand="SaveAllAttachments();" label="&saveAllAttachmentsCmd.label;" accesskey="&saveAllAttachmentsCmd.accesskey;"/>
 </popup>
@@ -47,6 +45,10 @@ Rights Reserved.
   <menuitem label="&saveAllAttachmentsCmd.label;" oncommand="SaveAllAttachments();"/>
 </popup>
 
+<popup id="attachmentTreeTooltip" class="tooltip" oncreate="return FillInAttachmentTooltip(document.tooltipNode);" > 
+    <text id="attachmentTreeTooltipText"/>
+</popup>
+
 <box id="msgHeaderView" persist="state">
 <grid id="collapsedHeaderView" class="header-part1" flex="1" collapsed="true">
   <columns>