fix(chips): improve ability to receive focus on click (#11098)

this solves a regression introduced in 1.1.2

Fixes #10344

Author: Splaktar

src/components/chips/js/chipsController.js

@@ -834,7 +834,7 @@ MdChipsCtrl.prototype.configureUserInput = function(inputElement) {
   // Find the NgModelCtrl for the input element
   var ngModelCtrl = inputElement.controller('ngModel');
   // `.controller` will look in the parent as well.
-  if (ngModelCtrl != this.ngModelCtrl) {
+  if (ngModelCtrl !== this.ngModelCtrl) {
     this.userInputNgModelCtrl = ngModelCtrl;
   }
 

src/components/chips/js/chipsDirective.js

@@ -206,7 +206,7 @@
               tabindex="{{$mdChipsCtrl.ariaTabIndex == $index ? 0 : -1}}"\
               id="{{$mdChipsCtrl.contentIdFor($index)}}"\
               role="option"\
-              aria-selected="{{$mdChipsCtrl.selectedChip == $index}}" \
+              aria-selected="{{$mdChipsCtrl.selectedChip === $index}}"\
               aria-posinset="{{$index}}"\
               ng-click="!$mdChipsCtrl.readonly && $mdChipsCtrl.focusChip($index)"\
               ng-focus="!$mdChipsCtrl.readonly && $mdChipsCtrl.selectChip($index)"\
@@ -376,7 +376,12 @@
 
         element
             .attr({ tabindex: -1 })
-            .on('focus', function () { mdChipsCtrl.onFocus(); });
+            .on('focus', function () { mdChipsCtrl.onFocus(); })
+            .on('click', function () {
+              if (!mdChipsCtrl.readonly && mdChipsCtrl.selectedChip === -1) {
+                mdChipsCtrl.onFocus();
+              }
+            });
 
         if (attr.ngModel) {
           mdChipsCtrl.configureNgModel(element.controller('ngModel'));

src/core/services/interimElement/interimElement.js

@@ -8,7 +8,7 @@ angular.module('material.core')
  *
  * @description
  *
- * Factory that contructs `$$interimElement.$service` services.
+ * Factory that constructs `$$interimElement.$service` services.
  * Used internally in material design for elements that appear on screen temporarily.
  * The service provides a promise-like API for interacting with the temporary
  * elements.