fix(list): correctly proxy ng-disabled attrs

closes #2718

src/components/list/list.js

@@ -110,7 +110,6 @@ function mdListItemDirective($mdAria, $mdConstant, $timeout) {
         }
       }
 
-
       function wrapIn(type) {
         var container;
         if (type == 'div') {
@@ -119,13 +118,13 @@ function mdListItemDirective($mdAria, $mdConstant, $timeout) {
           tEl.addClass('md-proxy-focus');
         } else {
           container = angular.element('<md-button class="md-no-style"><div class="md-list-item-inner"></div></md-button>');
-          container[0].setAttribute('ng-click', tEl[0].getAttribute('ng-click'));
-          tEl[0].removeAttribute('ng-click');
-
-          if (tEl[0].getAttribute('aria-label')) {
-            container[0].setAttribute('aria-label', tEl[0].getAttribute('aria-label'));
-            tEl[0].removeAttribute('aria-label');
-          }
+          var copiedAttrs = ['ng-click', 'aria-label', 'ng-disabled'];
+          angular.forEach(copiedAttrs, function(attr) {
+            if (tEl[0].hasAttribute(attr)) {
+              container[0].setAttribute(attr, tEl[0].getAttribute(attr));
+              tEl[0].removeAttribute(attr);
+            }
+          });
           container.children().eq(0).append(tEl.contents());
         }
 

src/components/list/list.spec.js

@@ -71,9 +71,10 @@ describe('mdListItem directive', function() {
 
 
   it('creates buttons when used with ng-click', function() {
-    var listItem = setup('<md-list-item ng-click="sayHello()"><p>Hello world</p></md-list-item>');
+    var listItem = setup('<md-list-item ng-click="sayHello()" ng-disabled="true"><p>Hello world</p></md-list-item>');
     var firstChild = listItem.children()[0];
     expect(firstChild.nodeName).toBe('MD-BUTTON');
+    expect(firstChild.hasAttribute('ng-disabled')).toBeTruthy();
     expect(firstChild.childNodes[0].nodeName).toBe('DIV');
     expect(firstChild.childNodes[0].childNodes[0].nodeName).toBe('P');
   });