feat(timepicker): add templateUrl and controllerAs support

* Add support for overriding the `templateUrl` on an instance by instance basis
* Expose controller via `controllerAs`

Fixes #4275
Closes #4284

Author: icfantv

Diff for: src/timepicker/docs/readme.md

@@ -8,6 +8,9 @@ All settings can be provided as attributes in the `<timepicker>` or globally con
  	:
  	The Date object that provides the time state.
 
+  * `template-url` (Defaults: `template/timepicker/timepicker.html`) :
+    Add the ability to override the template used on the component.
+
  * `hour-step` <i class="glyphicon glyphicon-eye-open"></i>
  	_(Defaults: 1)_ :
  	 Number of hours to increase or decrease when using a button.

Diff for: src/timepicker/test/timepicker.spec.js

@@ -1,12 +1,13 @@
 describe('timepicker directive', function() {
-  var $rootScope, $compile, element;
+  var $rootScope, $compile, $templateCache, element;
 
   beforeEach(module('ui.bootstrap.timepicker'));
   beforeEach(module('template/timepicker/timepicker.html'));
-  beforeEach(inject(function(_$compile_, _$rootScope_) {
+  beforeEach(inject(function(_$compile_, _$rootScope_, _$templateCache_) {
     $compile = _$compile_;
     $rootScope = _$rootScope_;
     $rootScope.time = newTime(14, 40);
+    $templateCache = _$templateCache_;
 
     element = $compile('<timepicker ng-model="time"></timepicker>')($rootScope);
     $rootScope.$digest();
@@ -1692,4 +1693,30 @@ describe('timepicker directive', function() {
       expect(element.hasClass('ng-invalid-time')).toBe(false);
     });
   });
+
+  describe('custom template and controllerAs', function() {
+    it('should allow custom templates', function() {
+      $templateCache.put('foo/bar.html', '<div>baz</div>');
+
+      element = $compile('<timepicker ng-model="time" template-url="foo/bar.html"></timepicker>')($rootScope);
+      $rootScope.$digest();
+      expect(element[0].tagName.toLowerCase()).toBe('div');
+      expect(element.html()).toBe('baz');
+    });
+
+    it('should expose the controller on the view', function() {
+      $templateCache.put('template/timepicker/timepicker.html', '<div><div>{{timepicker.text}}</div></div>');
+
+      element = $compile('<timepicker ng-model="time"></timepicker>')($rootScope);
+      $rootScope.$digest();
+
+      var ctrl = element.controller('timepicker');
+      expect(ctrl).toBeDefined();
+
+      ctrl.text = 'foo';
+      $rootScope.$digest();
+
+      expect(element.html()).toBe('<div class="ng-binding">foo</div>');
+    });
+  });
 });

Diff for: src/timepicker/timepicker.js

@@ -364,9 +364,12 @@ angular.module('ui.bootstrap.timepicker', [])
     restrict: 'EA',
     require: ['timepicker', '?^ngModel'],
     controller:'TimepickerController',
+    controllerAs: 'timepicker',
     replace: true,
     scope: {},
-    templateUrl: 'template/timepicker/timepicker.html',
+    templateUrl: function(element, attrs) {
+      return attrs.templateUrl || 'template/timepicker/timepicker.html';
+    },
     link: function(scope, element, attrs, ctrls) {
       var timepickerCtrl = ctrls[0], ngModelCtrl = ctrls[1];