added focus callback to the options (same behaviour as blur)

src/ui-ace.js

@@ -168,6 +168,13 @@ angular.module('ui.ace', [])
  */
  var onBlurListener;
 
+ /**
+ * Reference to a focus listener created by the listener factory.
+ * @function
+ * @see listenerFactory.onFocus
+ */
+ var onFocusListener;
+
  /**
  * Calls a callback by checking its existing. The argument list
  * is variable and thus this function is relying on the arguments
@@ -250,6 +257,20 @@ angular.module('ui.ace', [])
  return function () {
  executeUserCallback(callback, acee);
  };
+ },
+ /**
+ * Creates a focus listener which propagates the editor session
+ * to the callback from the user option onFocus. It might be
+ * exchanged during runtime, if this happens the old listener
+ * will be unbound.
+ *
+ * @param callback callback function defined in the user options
+ * @see onFocusListener
+ */
+ onFocus: function (callback) {
+ return function () {
+ executeUserCallback(callback, acee);
+ };
  }
  };
 
@@ -302,6 +323,13 @@ angular.module('ui.ace', [])
  onBlurListener = listenerFactory.onBlur(opts.onBlur);
  acee.on('blur', onBlurListener);
 
+ // unbind old foucs listener
+ acee.removeListener('focus', onFocusListener);
+
+ // bind new focus listener
+ onFocusListener = listenerFactory.onFocus(opts.onFocus);
+ acee.on('focus', onFocusListener);
+
  setOptions(acee, session, opts);
  };