Hotword Audio Verification App: update training UI on hotword trigger.

chrome/browser/resources/hotword_audio_verification/main.js

 // Copyright 2014 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.
 
 var appWindow = chrome.app.window.current();
 
 document.addEventListener('DOMContentLoaded', function() {
   var flow = new Flow();
   flow.startFlow();
 
   var closeAppWindow = function(e) {
     var classes = e.target.classList;
     if (classes.contains('close') || classes.contains('finish-button')) {
+      flow.stopTraining();
       appWindow.close();
       e.preventDefault();
     }
   };
 
-  // TODO(kcarattini): Cancel training in NaCl module for hotword-only and
-  // speech-training close and cancel buttons.
   $('steps').addEventListener('click', closeAppWindow);
 
   $('hw-agree-button').addEventListener('click', function(e) {
     flow.advanceStep();
+    flow.startTraining();
     e.preventDefault();
   });
 
   $('settings-link').addEventListener('click', function(e) {
     chrome.browser.openTab({'url': 'chrome://settings'}, function() {});
     e.preventDefault();
   });
-
-  /**
-   * Updates steps of the training UI.
-   * @param {string} pagePrefix Prefix of the element ids for this page.
-   * @param {Event} e The click event.
-   */
-  function doTraining(pagePrefix, e) {
-    // TODO(kcarattini): Update this to respond to a hotword trigger once
-    // speech training is implemented.
-    var steps = $(pagePrefix + '-training').querySelectorAll('.train');
-    var index = Array.prototype.indexOf.call(steps, e.currentTarget);
-    if (!steps[index])
-      return;
-
-    // TODO(kcarattini): Localize this string.
-    steps[index].querySelector('.text').textContent = 'Recorded';
-    steps[index].classList.remove('listening');
-    steps[index].classList.add('recorded');
-
-    if (steps[index + 1]) {
-      steps[index + 1].classList.remove('not-started');
-      steps[index + 1].classList.add('listening');
-    }
-  }
-
-  /**
-   * Adds event listeners to the training UI.
-   * @param {string} pagePrefix Prefix of the element ids for this page.
-   */
-  function addTrainingEventListeners(pagePrefix) {
-    var steps = $(pagePrefix + '-training').querySelectorAll('.train');
-    for (var i = 0; i < steps.length; ++i) {
-      steps[i].addEventListener('click', function(e) {
-        doTraining(pagePrefix, e);
-        e.preventDefault();
-
-        if (e.currentTarget != steps[steps.length - 1])
-          return;
-
-        // Update the 'Cancel' button.
-        var buttonElem = $(pagePrefix + '-cancel-button');
-        // TODO(kcarattini): Localize this string.
-        buttonElem.textContent = 'Please wait ...';
-        buttonElem.classList.add('grayed-out');
-        buttonElem.classList.remove('finish-button');
-
-        setTimeout(function() {
-          if (chrome.hotwordPrivate.setAudioLoggingEnabled)
-            chrome.hotwordPrivate.setAudioLoggingEnabled(true, function() {});
-
-          if (chrome.hotwordPrivate.setHotwordAlwaysOnSearchEnabled) {
-            chrome.hotwordPrivate.setHotwordAlwaysOnSearchEnabled(true,
-                flow.advanceStep.bind(flow));
-          }
-        }, 2000);
-      });
-    }
-  }
-
-  addTrainingEventListeners('speech-training');
-  addTrainingEventListeners('hotword-only');
 });