adding ability to listen for compose close events

Author: yellowandy

src/gmail.js

@@ -1265,6 +1265,7 @@ var Gmail_ = function(localJQuery) {
         handler: function(match, callback) {
           // console.log('reply_forward handler called', match, callback);
 
+          var originalMatch = match;
           // look back up the DOM tree for M9 (the main reply/forward node)
           match = match.closest('div.M9');
           if (!match.length) return;
@@ -1274,6 +1275,16 @@ var Gmail_ = function(localJQuery) {
             type = match.find('input[name=subject]').val().indexOf('Fw') == 0 ? 'forward' : 'reply';
           } else {
             type = 'compose';
+
+              //Find the close button and set an event listener so we can forward the compose_cancelled event.
+              var composeWindow = originalMatch.closest('div.AD');
+              composeWindow.find('.Ha').mouseup(function() {
+                  if(api.tracker.composeCancelledCallback) {
+                      api.tracker.composeCancelledCallback(match);
+                  }
+                  return true;
+              });
+
           }
           callback(match,type);
         }
@@ -1394,7 +1405,12 @@ var Gmail_ = function(localJQuery) {
       return true;
 
     // support for gmail interface load event
-    } else if(action == 'load') {
+    }
+    else if(action == 'compose_cancelled') {
+        console.log('set compose cancelled callback');
+        api.tracker.composeCancelledCallback = callback;
+    }
+    else if(action == 'load') {
 
       // wait until the gmail interface has finished loading and then
       // execute the passed handler. If interface is already loaded,