support auto focus "download links" text box when entering "new task" page

src/index.html

@@ -305,6 +305,7 @@
 <script src="scripts/controllers/settings-ariang.js"></script>
 <script src="scripts/controllers/settings-aria2.js"></script>
 <script src="scripts/controllers/status.js"></script>
+<script src="scripts/directives/autoFocus.js"></script>
 <script src="scripts/directives/pieceBar.js"></script>
 <script src="scripts/directives/pieceMap.js"></script>
 <script src="scripts/directives/chart.js"></script>

src/scripts/directives/autoFocus.js

@@ -0,0 +1,14 @@
+(function () {
+    'use strict';
+
+    angular.module('ariaNg').directive('ngAutoFocus', ['$timeout', function ($timeout) {
+        return {
+            restrict: 'A',
+            link: function (scope, element) {
+                $timeout(function () {
+                    element[0].focus();
+                });
+            }
+        };
+    }]);
+})();

src/views/new.html

@@ -43,7 +43,7 @@
                             <div class="col-sm-12">
                                 <p translate>Download Links:</p>
                                 <div class="form-group has-feedback no-margin" ng-class="{ 'has-error' : newTaskForm.urls.$invalid && newTaskForm.urls.$dirty, 'has-success' : newTaskForm.urls.$valid && newTaskForm.urls.$dirty }">
-                                <textarea name="urls" class="form-control" rows="10"
+                                <textarea name="urls" class="form-control" rows="10" autofocus="autofocus" ng-auto-focus
                                           ng-model="context.urls" ng-required="true" ng-keydown="urlTextboxKeyDown($event)"
                                           ng-placeholder="'Support multiple URLs, one URL per line.' | translate"
                                           ng-pattern="/^(\n?(((http|https|ftp|ssh):\/\/.+)|(magnet:\?.+)))*$/i"></textarea>