feat(directive): add instance access throught $broadcast event

Merge pull request #53 from whitehat101/instance-access-through-broadcast
new feature: allow access to the CM instance through a $broadcast event

Close #53

Author: whitehat101

src/ui-codemirror.js

@@ -110,6 +110,18 @@ angular.module('ui.codemirror', [])
             });
           }
 
+
+          // Allow access to the CodeMirror instance through a broadcasted event
+          // eg: $broadcast('CodeMirror', function(cm){...});
+          scope.$on('CodeMirror', function(event, callback){
+            if (angular.isFunction(callback)) {
+              callback(codeMirror);
+            } else {
+              throw new Error('the CodeMirror event requires a callback function');
+            }
+          });
+
+
           // onLoad callback
           if (angular.isFunction(opts.onLoad)) {
             opts.onLoad(codeMirror);

test/codemirror.spec.js

@@ -247,6 +247,17 @@ describe('uiCodemirror', function () {
       expect(scope.codemirrorLoaded).toHaveBeenCalledWith(codemirror);
     });
 
+    it('responds to the $broadcast event "CodeMirror"', function () {
+      var broadcast = { callback: angular.noop };
+      spyOn(broadcast, 'callback');
+
+      $compile('<div ui-codemirror></div>')(scope);
+      scope.$broadcast('CodeMirror', broadcast.callback);
+
+      expect(broadcast.callback).toHaveBeenCalled();
+      expect(broadcast.callback).toHaveBeenCalledWith(codemirror);
+    });
+
 
     it('should watch the options', function () {
       spyOn(scope, '$watch').andCallThrough();