feat(directive): ng:focus, ng:blur

Added directives for focus and blur events.

Closes #1277

src/ng/directive/ngEventDirs.js

@@ -37,7 +37,7 @@
  */
 var ngEventDirectives = {};
 forEach(
-  'click dblclick mousedown mouseup mouseover mouseout mousemove mouseenter mouseleave keydown keyup keypress submit'.split(' '),
+  'click dblclick mousedown mouseup mouseover mouseout mousemove mouseenter mouseleave keydown keyup keypress submit focus blur'.split(' '),
   function(name) {
     var directiveName = directiveNormalize('ng-' + name);
     ngEventDirectives[directiveName] = ['$parse', function($parse) {
@@ -264,3 +264,33 @@ forEach(
      </doc:scenario>
    </doc:example>
  */
+
+/**
+ * @ngdoc directive
+ * @name ng.directive:ngFocus
+ *
+ * @description
+ * Specify custom behavior on focus event.
+ *
+ * @element window, input, select, textarea, a
+ * @param {expression} ngFocus {@link guide/expression Expression} to evaluate upon
+ * focus. (Event object is available as `$event`)
+ *
+ * @example
+ * See {@link ng.directive:ngClick ngClick}
+ */
+
+/**
+ * @ngdoc directive
+ * @name ng.directive:ngBlur
+ *
+ * @description
+ * Specify custom behavior on blur event.
+ *
+ * @element window, input, select, textarea, a
+ * @param {expression} ngBlur {@link guide/expression Expression} to evaluate upon
+ * blur. (Event object is available as `$event`)
+ *
+ * @example
+ * See {@link ng.directive:ngClick ngClick}
+ */

test/ng/directive/ngKeySpec.js

@@ -34,5 +34,23 @@ describe('ngKeyup and ngKeydown directives', function() {
     expect($rootScope.touched).toEqual(true);
   }));
 
+  it('should get called on focus', inject(function($rootScope, $compile) {
+    element = $compile('<input ng-focus="touched = true">')($rootScope);
+    $rootScope.$digest();
+    expect($rootScope.touched).toBeFalsy();
+
+    browserTrigger(element, 'focus');
+    expect($rootScope.touched).toEqual(true);
+  }));
+
+  it('should get called on blur', inject(function($rootScope, $compile) {
+    element = $compile('<input ng-blur="touched = true">')($rootScope);
+    $rootScope.$digest();
+    expect($rootScope.touched).toBeFalsy();
+
+    browserTrigger(element, 'blur');
+    expect($rootScope.touched).toEqual(true);
+  }));
+
 });