Options2: Pull the trigger.

chrome/browser/resources/options2/chromeos/system_options.js

+// Copyright (c) 2011 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.
+
+cr.define('options', function() {
+
+  var OptionsPage = options.OptionsPage;
+  var RepeatingButton = cr.ui.RepeatingButton;
+
+  /////////////////////////////////////////////////////////////////////////////
+  // SystemOptions class:
+
+  /**
+   * Encapsulated handling of ChromeOS system options page.
+   * @constructor
+   */
+
+  function SystemOptions() {
+    OptionsPage.call(this, 'system', templateData.systemPageTabTitle,
+                     'systemPage');
+  }
+
+  cr.addSingletonGetter(SystemOptions);
+
+  // Inherit SystemOptions from OptionsPage.
+  SystemOptions.prototype = {
+    __proto__: options.OptionsPage.prototype,
+
+    /**
+     * Initializes SystemOptions page.
+     * Calls base class implementation to starts preference initialization.
+     */
+    initializePage: function() {
+      OptionsPage.prototype.initializePage.call(this);
+
+      // Disable time-related settings if we're not logged in as a real user.
+      if (AccountsOptions.loggedInAsGuest()) {
+        var timezone = $('timezone-select');
+        if (timezone)
+          timezone.disabled = true;
+        var use_24hour_clock = $('use-24hour-clock');
+        if (use_24hour_clock)
+          use_24hour_clock.disabled = true;
+      }
+
+      options.system.bluetooth.BluetoothListElement.decorate(
+          $('bluetooth-device-list'));
+
+      // TODO(kevers): Populate list of connected bluetooth devices.
+      //               Set state of 'Enable bluetooth' checkbox.
+      $('bluetooth-find-devices').onclick = function(event) {
+        findBluetoothDevices_();
+      };
+      $('enable-bluetooth').onclick = function(event) {
+        chrome.send('bluetoothEnableChange', [Boolean(true)]);
+      };
+      $('disable-bluetooth').onclick = function(event) {
+        chrome.send('bluetoothEnableChange', [Boolean(false)]);
+      };
+      $('language-button').onclick = function(event) {
+        OptionsPage.navigateToPage('language');
+      };
+      $('modifier-keys-button').onclick = function(event) {
+        OptionsPage.navigateToPage('languageCustomizeModifierKeysOverlay');
+      };
+      $('accesibility-check').onchange = function(event) {
+        chrome.send('accessibilityChange',
+                    [String($('accesibility-check').checked)]);
+      };
+      initializeBrightnessButton_('brightness-decrease-button',
+          'decreaseScreenBrightness');
+      initializeBrightnessButton_('brightness-increase-button',
+          'increaseScreenBrightness');
+    }
+  };
+
+  /**
+   * Initializes a button for controlling screen brightness.
+   * @param {string} id Button ID.
+   * @param {string} callback Name of the callback function.
+   */
+  function initializeBrightnessButton_(id, callback) {
+    var button = $(id);
+    cr.ui.decorate(button, RepeatingButton);
+    button.repeatInterval = 300;
+    button.addEventListener(RepeatingButton.Event.BUTTON_HELD, function(e) {
+      chrome.send(callback);
+    });
+  }
+
+  /**
+   * Scan for bluetooth devices.
+   * @private
+   */
+  function findBluetoothDevices_() {
+    setVisibility_('bluetooth-scanning-label', true);
+    setVisibility_('bluetooth-scanning-icon', true);
+
+    // Remove devices that are not currently connected.
+    var devices = $('bluetooth-device-list').childNodes;
+    for (var i = devices.length - 1; i >= 0; i--) {
+      var device = devices.item(i);
+      var data = device.data;
+      if (!data || data.status !== 'connected')
+        $('bluetooth-device-list').removeChild(device);
+    }
+    chrome.send('findBluetoothDevices');
+  }
+
+  /**
+   * Sets the visibility of an element.
+   * @param {string} id The id of the element.
+   * @param {boolean} visible True if the element should be made visible.
+   * @private
+   */
+  function setVisibility_(id, visible) {
+    if (visible)
+      $(id).classList.remove("transparent");
+    else
+      $(id).classList.add("transparent");
+  }
+
+  //
+  // Chrome callbacks
+  //
+
+  /**
+   * Set the initial state of the accessibility checkbox.
+   */
+  SystemOptions.SetAccessibilityCheckboxState = function(checked) {
+    $('accesibility-check').checked = checked;
+  };
+
+  /**
+   * Activate the bluetooth settings section on the System settings page.
+   */
+  SystemOptions.showBluetoothSettings = function() {
+    $('bluetooth-devices').hidden = false;
+  };
+
+  /**
+   * Sets the state of the checkbox indicating if bluetooth is turned on. The
+   * state of the "Find devices" button and the list of discovered devices may
+   * also be affected by a change to the state.
+   * @param {boolean} checked Flag Indicating if Bluetooth is turned on.
+   */
+  SystemOptions.setBluetoothState = function(checked) {
+    $('disable-bluetooth').hidden = !checked;
+    $('enable-bluetooth').hidden = checked;
+    $('bluetooth-finder-container').hidden = !checked;
+    $('no-bluetooth-devices-label').hidden = !checked;
+    if (!checked) {
+      setVisibility_('bluetooth-scanning-label', false);
+      setVisibility_('bluetooth-scanning-icon', false);
+    }
+    // Flush list of previously discovered devices if bluetooth is turned off.
+    if (!checked) {
+      var devices = $('bluetooth-device-list').childNodes;
+      for (var i = devices.length - 1; i >= 0; i--) {
+        var device = devices.item(i);
+        $('bluetooth-device-list').removeChild(device);
+      }
+    }
+  }
+
+  /**
+   * Adds an element to the list of available bluetooth devices. If an element
+   * with a matching address is found, the existing element is updated.
+   * @param {{name: string,
+   *          address: string,
+   *          icon: string,
+   *          paired: boolean,
+   *          connected: boolean}} device
+   *     Decription of the bluetooth device.
+   */
+  SystemOptions.addBluetoothDevice = function(device) {
+    if ($('bluetooth-device-list').appendDevice(device))
+      $('no-bluetooth-devices-label').hidden = true;
+  };
+
+  /**
+   * Hides the scanning label and icon that are used to indicate that a device
+   * search is in progress.
+   */
+  SystemOptions.notifyBluetoothSearchComplete = function() {
+    setVisibility_('bluetooth-scanning-label', false);
+    setVisibility_('bluetooth-scanning-icon', false);
+  };
+
+  /**
+   * Displays the Touchpad Controls section when we detect a touchpad.
+   */
+  SystemOptions.showTouchpadControls = function() {
+    $('touchpad-controls').hidden = false;
+  };
+
+  // Export
+  return {
+    SystemOptions: SystemOptions
+  };
+
+});