Bug #240138 --> Add tooltips showing the email address on address nodes we are showing just the display name for.

mail/base/content/msgHdrViewOverlay.js

@@ -870,7 +870,13 @@ function AddExtraAddressProcessing(emailAddress, addressNode)
   var emailAddress = addressNode.getTextAttribute("emailAddress");
 
   if (gShowCondensedEmailAddresses && displayName && useDisplayNameForAddress(emailAddress))
+  {
     addressNode.setAttribute('label', displayName); 
+    addressNode.setAttribute("tooltiptext", emailAddress);
+    addressNode.setAttribute("tooltip", "emailAddressTooltip");
+  }
+  else
+    addressNode.removeAttribute("tooltiptext");
 } 
 
 function fillEmailAddressPopup(emailAddressNode)
@@ -881,6 +887,16 @@ function fillEmailAddressPopup(emailAddressNode)
   emailAddressPlaceHolder.setAttribute('label', emailAddress);
 }
 
+
+// Public method called to generate a tooltip over a condensed display name
+function fillInEmailAddressTooltip(addressNode)
+{
+  var emailAddress = addressNode.getTextAttribute('emailAddress');
+  var tooltipNode = document.getElementById("attachmentListTooltip");
+  tooltipNode.setAttribute("label", attachmentName);
+  return true;
+}
+
 // returns true if we should use the display name for this address
 // otherwise returns false
 function useDisplayNameForAddress(emailAddress)

mail/base/content/msgHdrViewOverlay.xul

@@ -54,6 +54,9 @@
 <tooltip id="attachmentListTooltip"
          onpopupshowing="return FillInAttachmentTooltip(document.tooltipNode);"/> 
 
+<tooltip id="emailAddressTooltip"
+         onpopupshowing="return fillInEmailAddressTooltip(document.tooltipNode);"/> 
+
 <hbox id="msgHeaderView" keywordrelated="true" originalclass="none" persist="state">
   <vbox flex="1">
   <!-- the message pane consists of 3 'boxes'. Box #1 is a grid, showing a brief view of the headers -->