cros: Allow hotrod remote to check/uncheck a11y checkboxes for CFM oobe

chrome/browser/resources/chromeos/login/oobe.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Out of the box experience flow (OOBE).
  * This is the main code for the OOBE WebUI implementation.
  */
 
 // <include src="login_shared.js">
@@ skipping 157 matching lines @@
 
       $('high-contrast').addEventListener('click',
                                           Oobe.handleHighContrastClick);
       $('large-cursor').addEventListener('click',
                                          Oobe.handleLargeCursorClick);
       $('spoken-feedback').addEventListener('click',
                                             Oobe.handleSpokenFeedbackClick);
       $('screen-magnifier').addEventListener('click',
                                              Oobe.handleScreenMagnifierClick);
       $('virtual-keyboard').addEventListener('click',
-                                              Oobe.handleVirtualKeyboardClick);
+                                             Oobe.handleVirtualKeyboardClick);
+
+      $('high-contrast').addEventListener('keypress', Oobe.handleA11yKeyPress);
+      $('large-cursor').addEventListener('keypress', Oobe.handleA11yKeyPress);
+      $('spoken-feedback')
+          .addEventListener('keypress', Oobe.handleA11yKeyPress);
+      $('screen-magnifier')
+          .addEventListener('keypress', Oobe.handleA11yKeyPress);
+      $('virtual-keyboard')
+          .addEventListener('keypress', Oobe.handleA11yKeyPress);
 
       // A11y menu should be accessible i.e. disable autohide on any
       // keydown or click inside menu.
       $('accessibility-menu').hideOnKeyPress = false;
       $('accessibility-menu').hideOnSelfClick = false;
     },
 
     /**
      * Accessibility link handler.
      */
@@ skipping 24 matching lines @@
         // Update screen falls into this category. Since it doesn't have any
         // controls other than a11y link we don't want that link to receive
         // focus when screen is shown i.e. defaultControl is not defined.
         // Focus a11y link instead.
         $('accessibility-menu').elementToFocusOnHide = e.target;
       }
       e.stopPropagation();
     },
 
     /**
+     * handle a11y menu checkboxes keypress event by simulating click event.
+     */
+    handleA11yKeyPress: function(e) {
+      if (e.key != 'Enter')
+        return;
+
+      if (e.target.tagName != 'INPUT' || e.target.type != 'checkbox')
+        return;
+
+      // Simulate click on the checkbox.
+      e.target.click()
+    },
+
+    /**
      * Spoken feedback checkbox handler.
      */
     handleSpokenFeedbackClick: function(e) {
       chrome.send('enableSpokenFeedback', [$('spoken-feedback').checked]);
       e.stopPropagation();
     },
 
     /**
      * Large cursor checkbox handler.
      */
@@ skipping 118 matching lines @@
         $('oobe-shield').setAttribute('md-mode', 'true');
         $('popup-overlay').setAttribute('md-mode', 'true');
       } else {
         $('oobe').removeAttribute('md-mode');
         $('oobe-shield').removeAttribute('md-mode');
         $('popup-overlay').removeAttribute('md-mode');
       }
     },
   };
 });