ChromeOS MD-OOBE: Add Timezone Selection screen.

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

 // Copyright 2016 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 Polymer element for displaying material design OOBE.
  */
 
 Polymer({
   is: 'oobe-welcome-md',
@@ skipping 41 matching lines @@
 
     /**
      * Flag that shows Accessibility Options screen.
      */
     accessibilityOptionsScreenShown: {
       type: Boolean,
       value: false,
     },
 
     /**
+     * Flag that shows Timezone Selection screen.
+     */
+    timezoneScreenShown: {
+      type: Boolean,
+      value: false,
+    },
+
+    /**
      * Flag that shows Network Selection screen.
      */
     networkSelectionScreenShown: {
       type: Boolean,
       value: false,
     },
 
     /**
      * Flag that enables MD-OOBE.
      */
     enabled: {
       type: Boolean,
       value: false,
     },
 
     /**
      * Accessibility options status.
      * @type {!OobeTypes.A11yStatuses}
      */
     a11yStatus: {
       type: Object,
     },
+
+    /**
+     * A list of timezones for Timezone Selection screen.
+     * @type {!Array<OobeTypes.TimezoneDsc>}
+     */
+    timezones: {
+      type: Object,
+      value: [],
+    },
+
+    /**
+     * If UI uses forced keyboard navigation.
+     */
+    highlightStrength: {
+      type: String,
+      value: '',
+    },
   },
 
   /**
    * Hides all screens to help switching from one screen to another.
    */
   hideAllScreens_: function() {
     this.welcomeScreenShown = false;
     this.networkSelectionScreenShown = false;
     this.languageSelectionScreenShown = false;
     this.accessibilityOptionsScreenShown = false;
+    this.timezoneScreenShown = false;
   },
 
   /**
    * GUID of the user-selected network. It is remembered after user taps on
    * network entry. After we receive event "connected" on this network,
    * OOBE will proceed.
    */
   networkLastSelectedGuid_: '',
 
   /**
@@ skipping 35 matching lines @@
         customItemName: 'addMobileNetworkMenuName',
         polymerIcon: 'oobe-welcome-20:add-cellular',
         customData: {
           onTap: function() { self.OpenAddWiFiNetworkDialog_(); },
         },
       },
     ];
   },
 
   /**
+   * Returns true if timezone button should be visible.
+   * @private
+   */
+  isTimezoneButtonVisible_: function(highlightStrength) {
+    if (!highlightStrength)
+      return false;
+
+    if (highlightStrength == 'strong')
+      return true;
+
+    return false;

[xiyuan, 2016/12/09 17:50:59]

nit: think we can do

  return highlightStrength === 'strong';

[Alexander Alekseev, 2016/12/10 00:43:00]

Done.

+  },
+
+  /**
    * Handle "Next" button for "Welcome" screen.
    *
    * @private
    */
   onWelcomeNextButtonClicked_: function() {
     this.hideAllScreens_();
     this.networkSelectionScreenShown = true;
   },
 
   /**
@@ skipping 10 matching lines @@
    * Handle "Accessibility" button for "Welcome" screen.
    *
    * @private
    */
   onWelcomeAccessibilityButtonClicked_: function() {
     this.hideAllScreens_();
     this.accessibilityOptionsScreenShown = true;
   },
 
   /**
+   * Handle "Timezone" button for "Welcome" screen.
+   *
+   * @private
+   */
+  onWelcomeTimezoneButtonClicked_: function() {
+    this.hideAllScreens_();
+    this.timezoneScreenShown = true;
+  },
+
+  /**
    * Handle Networwork Setup screen "Proxy settings" button.
    *
    * @private
    */
   OpenProxySettingsDialog_: function(item) {
     chrome.send('launchProxySettingsDialog');
   },
 
   /**
    * Handle Networwork Setup screen "Add WiFi network" button.
@@ skipping 149 matching lines @@
    * Note that each <oobe-a11y-option> has chromeMessage attribute
    * containing Chromium callback name.
    *
    * @private
    * @param {!Event} event
    */
   onA11yOptionChanged_: function(event) {
     chrome.send(
         event.currentTarget.chromeMessage, [event.currentTarget.checked]);
   },
+
+  /** ******************** Timezone section ******************* */
+
+  /**
+   * Handle "OK" button for "Timezone Selection" screen.
+   *
+   * @private
+   */
+  closeTimezoneSection_: function() {
+    this.hideAllScreens_();
+    this.welcomeScreenShown = true;
+  },
+
+  /**
+   * Handle timezone selection.
+   *
+   * @param {!{detail: {!OobeTypes.Timezone}}} event
+   * @private
+   */
+  onTimezoneSelected_: function(event) {
+    var item = event.detail;
+    if (!item)
+      return;
+
+    var timezone = item.value;

[xiyuan, 2016/12/09 17:50:59]

nit: get rid of |timezone| and use item.value in place

[Alexander Alekseev, 2016/12/10 00:43:00]

Done.

+    this.screen.onTimezoneSelected_(timezone);
+  },
 });