Publish Vulpes Preview 15 sources for desktop, Android and Tundra
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339
gaia/tv_apps/smart-system/js/airplane_mode.js
Executable file
339
gaia/tv_apps/smart-system/js/airplane_mode.js
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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- /
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
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/* global SettingsCache, SettingsListener, SettingsCache, AirplaneMode */
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/* jshint loopfunc:true */
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'use strict';
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(function(exports) {
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var AirplaneModeServiceHelper = {
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_settings: {},
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_initSetting: function(settingID) {
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var self = this;
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var settingEnabledID = settingID + '.enabled';
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var settingSuspendedID = settingID + '.suspended';
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// forget the mozSetting states when user toggle 'xyz' on manually,
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// e.g. set 'xyz'.suspend = false when 'xyz'.enabled === true
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SettingsCache.observe(settingEnabledID,
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'',
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function(value) {
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if (value) {
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self._unsuspend(settingSuspendedID);
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}
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});
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// init and observe the corresponding mozSettings
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// for Bluetooth, Wifi, and GPS.
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SettingsCache.observe(settingEnabledID, false,
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function(value) {
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self._settings[settingEnabledID] = value;
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});
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// remember the mozSetting states before the airplane mode disables them
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SettingsCache.observe(settingSuspendedID, false,
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function(value) {
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self._settings[settingSuspendedID] = value;
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});
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},
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// turn off the mozSetting corresponding to `key'
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// and remember its initial state by storing it in another setting
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_suspend: function(key) {
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var enabled = this._settings[key + '.enabled'];
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var suspended = this._settings[key + '.suspended'];
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if (suspended) {
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return;
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}
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// remember the state before switching it to false
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var sset = {};
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sset[key + '.suspended'] = enabled;
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SettingsListener.getSettingsLock().set(sset);
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// switch the state to false if necessary
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if (enabled) {
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var eset = {};
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eset[key + '.enabled'] = false;
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SettingsListener.getSettingsLock().set(eset);
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}
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},
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// turn on the mozSetting corresponding to `key'
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// if it has been suspended by the airplane mode
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_restore: function(key) {
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var suspended = this._settings[key + '.suspended'];
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// clear the 'suspended' state
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var sset = {};
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sset[key + '.suspended'] = false;
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SettingsListener.getSettingsLock().set(sset);
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// switch the state to true if it was suspended
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if (suspended) {
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var rset = {};
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rset[key + '.enabled'] = true;
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SettingsListener.getSettingsLock().set(rset);
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}
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},
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_unsuspend: function(settingSuspendedID) {
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// clear the 'suspended' state
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var sset = {};
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sset[settingSuspendedID] = false;
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SettingsListener.getSettingsLock().set(sset);
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},
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isEnabled: function(key) {
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return this._settings[key + '.enabled'];
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},
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isSuspended: function(key) {
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return this._settings[key + '.suspended'];
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},
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init: function() {
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['bluetooth', 'wifi', 'geolocation'].forEach(
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this._initSetting.bind(this)
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);
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},
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updateStatus: function(value) {
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// FM Radio will be turned off in Gecko, more detailed about why we do
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// this in Gecko instead, please check bug 997064.
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var bluetooth = window.navigator.mozBluetooth;
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var wifiManager = window.navigator.mozWifiManager;
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if (value) {
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// Turn off Bluetooth.
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if (bluetooth) {
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this._suspend('bluetooth');
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}
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// Turn off Wifi and Wifi tethering.
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if (wifiManager) {
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this._suspend('wifi');
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SettingsListener.getSettingsLock().set({
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'tethering.wifi.enabled': false
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});
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}
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// Turn off Geolocation.
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this._suspend('geolocation');
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} else {
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// Note that we don't restore Wifi tethering when leaving airplane mode
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// because Wifi tethering can't be switched on before data connection is
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// established.
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// Don't attempt to turn on Bluetooth if it's already on
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if (bluetooth && !bluetooth.enabled) {
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this._restore('bluetooth');
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}
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// Don't attempt to turn on Wifi if it's already on
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if (wifiManager && !wifiManager.enabled) {
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this._restore('wifi');
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}
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// Don't attempt to turn on Geolocation if it's already on
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if (!this._settings['geolocation.enabled']) {
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this._restore('geolocation');
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}
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}
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}
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};
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// main
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var AirplaneMode = {
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/*
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* We will cache the helper as our internal value
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*/
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_serviceHelper: AirplaneModeServiceHelper,
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/*
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* This is an internal key to store current state of AirplaneMode
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*/
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_enabled: null,
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/*
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* This is an event mapping table that will help us wait for
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* specific event from its manager to make sure we are now
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* in airplane mode or not.
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*/
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_checkedActionsMap: {
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wifi: {
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enabled: 'wifi-enabled',
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disabled: 'wifi-disabled'
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},
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bluetooth: {
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enabled: 'bluetooth-adapter-added',
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disabled: 'bluetooth-disabled'
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}
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},
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/*
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* When turning on / off airplane mode, we will start watching
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* needed events to make sure we are in airplane mode or not.
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*
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* @param {boolean} value
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* @param {Object} checkedActions
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*/
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watchEvents: function(value, checkedActions) {
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var self = this;
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// We don't want to wait until the first event reacts in order to
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// update the status, because we can set the status to 'enabling' or
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// 'disabling' already through `_updateAirplaneModeStatus`.
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self._updateAirplaneModeStatus(checkedActions);
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for (var serviceName in this._checkedActionsMap) {
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// if we are waiting for specific service
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if (serviceName in checkedActions) {
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var action = value ? 'disabled' : 'enabled';
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var eventName = this._checkedActionsMap[serviceName][action];
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// then we will start watch events coming from its manager
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window.addEventListener(eventName,
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(function(eventName, serviceName) {
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return function toUpdateAirplaneMode() {
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window.removeEventListener(eventName, toUpdateAirplaneMode);
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checkedActions[serviceName] = true;
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self._updateAirplaneModeStatus(checkedActions);
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};
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}(eventName, serviceName)));
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}
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}
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},
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/*
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* This is a ES5 feature that can help the others easily get/set
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* AirplaneMode.
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*
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* @param {boolean} value
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*/
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set enabled(value) {
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if (value !== this._enabled) {
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this._enabled = value;
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// start watching events
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this.watchEvents(value, this._getCheckedActions(value));
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// tell services to do their own operations
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this._serviceHelper.updateStatus(value);
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this.publish('airplanemodechanged', {enabled: value});
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}
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},
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publish: function publish(event, detail) {
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var evt = new CustomEvent(event,
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{
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bubbles: true,
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detail: detail || this
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});
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window.dispatchEvent(evt);
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},
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/*
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* This is a ES5 feature that can help the others easily get AirplaneMode
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* states.
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*
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* @return {boolean}
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*/
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get enabled() {
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return this._enabled;
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},
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/*
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* In order to make sure all needed managers work successfully. We have to
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* use this method to update airplaneMode related keys to tell
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* AirplaneModeHelper our current states and is finised or not.
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*/
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_updateAirplaneModeStatus: function(checkActions) {
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var self = this;
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var areAllActionsDone;
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areAllActionsDone = this._areCheckedActionsAllDone(checkActions);
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if (areAllActionsDone) {
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SettingsListener.getSettingsLock().set({
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'airplaneMode.enabled': self._enabled,
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'airplaneMode.status': self._enabled ? 'enabled' : 'disabled'
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});
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} else {
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// keep updating the status to reflect current status
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SettingsListener.getSettingsLock().set({
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'airplaneMode.status': self._enabled ? 'enabling' : 'disabling'
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});
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}
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},
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/*
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* By default, these three API takes longer time and with success / error
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* callback. we just have to wait for these three items.
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*
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* @param {boolean} value
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* @return {Object} checkedActions
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*/
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_getCheckedActions: function(value) {
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// we have to re-init all need-to-check managers
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var checkedActions = {};
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if (value === true) {
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// check bluetooth
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if (this._serviceHelper.isEnabled('bluetooth')) {
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checkedActions.bluetooth = false;
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}
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// check wifi
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if (this._serviceHelper.isEnabled('wifi')) {
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checkedActions.wifi = false;
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}
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} else {
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// check bluetooth
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if (this._serviceHelper.isSuspended('bluetooth')) {
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checkedActions.bluetooth = false;
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}
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// check wifi
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if (this._serviceHelper.isSuspended('wifi')) {
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checkedActions.wifi = false;
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}
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}
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return checkedActions;
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},
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/*
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* We have to use this method to check whether all actions
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* are done or not.
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*
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* @return {boolean}
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*/
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_areCheckedActionsAllDone: function(checkedActions) {
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for (var key in checkedActions) {
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if (checkedActions[key] === false) {
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return false;
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}
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}
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return true;
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},
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/*
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* Entry point
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*/
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init: function apm_init() {
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var self = this;
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this._serviceHelper.init();
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// monitor airplaneMode communication key change
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SettingsCache.observe('airplaneMode.enabled', false, function(value) {
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self.enabled = value;
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});
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}
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};
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exports.AirplaneMode = AirplaneMode;
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})(window);
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if (document && (document.readyState === 'complete' ||
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document.readyState === 'interactive')) {
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setTimeout(AirplaneMode.init.bind(AirplaneMode));
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} else {
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window.addEventListener('load', function onload() {
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window.removeEventListener('load', onload);
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AirplaneMode.init();
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});
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}
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