Publish Vulpes Preview 15 sources for desktop, Android and Tundra
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
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575
assets/webapps/system.gaiamobile.org/js/bluetooth_v2.js
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575
assets/webapps/system.gaiamobile.org/js/bluetooth_v2.js
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@ -0,0 +1,575 @@
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'use strict';
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/**
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* Bluetooth2 is compatible with Bluetooth APIv2 and used to enable/
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* disable bluetooth hardware, get bluetooth adapter, and check target
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* bluetooth profile is connected.
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*
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* Bluetooth api v2 is the two level structure.
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* We use _btManagerHandler to handle BluetoothManager defaultAdapter
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* change event and _btAdapterHandler to handle status change event.
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*
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* Current supported Bluetooth profiles are:
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* - hfp: Hands-Free Profile
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* - opp: Object Push Profile
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* - a2dp: Advenced Audio Distribution Profile
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* - sco: Synchronous Connection-Oriented Profile
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*/
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/* global Service, LazyLoader, BluetoothIcon, BluetoothTransferIcon,
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BluetoothHeadphoneIcon, BluetoothTransfer */
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/* exported Bluetooth2 */
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(function(exports) {
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var Bluetooth = function() {};
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Bluetooth.prototype = {
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name: 'Bluetooth',
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/**
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* Debug message.
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*
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* @public
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* @type {Boolean} turn on/off the console log
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*/
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onDebug: false,
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/**
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* Store a reference of the default adapter.
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* If the adapter is not availble, no bluetooth operation could be
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* executed.
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*
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* @private
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*/
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_adapter: null,
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/**
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* Hold instance of bluetooth adapter state change handler.
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*
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* @private
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*/
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_bindBtAdapterHandler: null,
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/**
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* Hold instance of HFP status changed handler.
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*
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* @private
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*/
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_bindHfpStatusChangedHandler: null,
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/**
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* Hold instance of A2DP status changed handler.
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*
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* @private
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*/
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_bindA2dpStatusChangedHandler: null,
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/**
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* Hold instance of SCO status changed handler.
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*
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* @private
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*/
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_bindScoStatusChangedHandler: null,
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/**
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* Store a reference for mozBluetooth.
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*
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* @private
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*/
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_bluetooth: null,
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/**
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* State of Bluetooth default adapter.
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*
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* @private
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*/
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_isEnabled: false,
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/**
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* Set profile connect state.
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*
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* @private
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* @param {String} profile profile id
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* @param {Boolean} connected connect status
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*/
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_setProfileConnected: function bt_setProfileConnected(profile, connected) {
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var value = this['_' + profile + 'Connected'];
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if (value !== connected) {
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this['_' + profile + 'Connected'] = connected;
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// Raise an event for the profile connection changes.
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window.dispatchEvent(new CustomEvent('bluetoothprofileconnectionchange',
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{
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detail: {
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name: profile,
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connected: connected
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}
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}
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));
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// Update Bluetooth and profile icons
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this.icon && this.icon.update();
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if (profile === 'opp' && this.transferIcon) {
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this.transferIcon.update();
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}
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if (profile === 'a2dp' && this.headphoneIcon) {
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this.headphoneIcon.update();
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}
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}
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},
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/**
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* Check if bluetooth profile is connected.
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*
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* @private
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* @param {String} profile profile name
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* @return {Boolean} connected state
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*/
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_isProfileConnected: function bt__isProfileConnected(profile) {
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var isConnected = this['_' + profile + 'Connected'];
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if (isConnected === undefined) {
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return false;
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} else {
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return isConnected;
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}
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},
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/**
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* Initialize bluetooth module.
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*
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* @public
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*/
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start: function bt_start() {
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if (!window.navigator.mozSettings || !window.navigator.mozBluetooth) {
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return;
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}
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this._bluetooth = window.navigator.mozBluetooth;
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// hold the instances so we can remove it when needed
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this._bindBtAdapterHandler =
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this._btAdapterHandler.bind(this);
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this._bindHfpStatusChangedHandler = function(evt) {
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this._setProfileConnected('hfp', evt.status);
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}.bind(this);
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this._bindA2dpStatusChangedHandler = function(evt) {
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this._setProfileConnected('a2dp', evt.status);
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}.bind(this);
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this._bindScoStatusChangedHandler = function(evt) {
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this._setProfileConnected('sco', evt.status);
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}.bind(this);
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this._initDefaultAdapter();
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this._bluetooth.addEventListener('attributechanged',
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this._btManagerHandler.bind(this));
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// decouple enable/disable bluetooth function from other system part
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window.addEventListener('request-enable-bluetooth',
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this._requestEnableHandler.bind(this));
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window.addEventListener('request-disable-bluetooth',
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this._requestDisableHandler.bind(this));
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// relay bluetooth transfer system messages
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navigator.mozSetMessageHandler('bluetooth-opp-transfer-start',
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this._oppTransferStartHandler.bind(this));
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navigator.mozSetMessageHandler('bluetooth-opp-transfer-complete',
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this._oppTransferCompleteHandler.bind(this));
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// expose functions to Service.request
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Service.register('adapter', this);
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Service.register('pair', this);
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Service.register('getPairedDevices', this);
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// expose functions to Service.query
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Service.registerState('isEnabled', this);
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Service.registerState('getAdapter', this);
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Service.registerState('isOPPProfileConnected', this);
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Service.registerState('isA2DPProfileConnected', this);
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Service.registerState('isSCOProfileConnected', this);
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// handle statusbar icons
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LazyLoader.load(['js/bluetooth_transfer.js',
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'js/bluetooth_icon.js',
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'js/bluetooth_transfer_icon.js',
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'js/bluetooth_headphone_icon.js']).then(() => {
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BluetoothTransfer.start();
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this.icon = new BluetoothIcon(this);
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this.icon.start();
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this.transferIcon = new BluetoothTransferIcon(this);
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this.transferIcon.start();
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this.headphoneIcon = new BluetoothHeadphoneIcon(this);
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this.headphoneIcon.start();
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}).catch(function(err) {
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console.error(err);
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});
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},
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stop: function() {
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Service.unregister('adapter', this);
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Service.unregister('pair', this);
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Service.unregister('getPairedDevices', this);
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Service.unregisterState('isEnabled', this);
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Service.unregisterState('getAdapter', this);
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Service.unregisterState('isOPPProfileConnected', this);
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Service.unregisterState('isA2DPProfileConnected', this);
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Service.unregisterState('isSCOProfileConnected', this);
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},
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/**
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* Generally bluetooth adapter is already available when start
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* this module and no related event will be received.
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* so we try to get the adapter then listen to mozBluetooth change
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* to prevent race condition
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*
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* @private
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*/
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_initDefaultAdapter: function() {
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this.debug('init bluetooth adapter');
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this._adapter = this._bluetooth.defaultAdapter;
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if (this._adapter) {
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this.debug('adapter is available');
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// listen states when the adapter is available
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this._adapterAvailableHandler();
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// dispatch default bluetooth enable state
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this._isEnabled = (this._adapter.state === 'enabled');
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this._dispatchEnableState();
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}
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},
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/**
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* Once adapter is available, listen to bluetooth state and
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* the connect stat of supported profiles.
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*
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* we only support two use cases for bluetooth connection:
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* 1. connecting with a headset
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* 2. transfering a file to/from another device
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* So we need to listen to corresponding events to know we are (aren't)
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* connected, then summarize to an event and dispatch to Statusbar
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*
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* @private
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*/
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_adapterAvailableHandler: function bt__adapterAvailableHandler() {
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// listen to adapter state
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this._adapter.addEventListener('attributechanged',
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this._bindBtAdapterHandler);
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// headset connected cases
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this._adapter.addEventListener('hfpstatuschanged',
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this._bindHfpStatusChangedHandler);
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this._adapter.addEventListener('a2dpstatuschanged',
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this._bindA2dpStatusChangedHandler);
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this._adapter.addEventListener('scostatuschanged',
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this._bindScoStatusChangedHandler);
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},
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/**
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* Remove all EventListeners when default adapter is changed.
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*/
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_adapterUnavailableHandler: function bt__adapterUnavailableHandler() {
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this.debug('default adapter is removed');
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// unbind headset connected cases
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this._adapter.removeEventListener('hfpstatuschanged',
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this._bindHfpStatusChangedHandler);
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this._adapter.removeEventListener('a2dpstatuschanged',
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this._bindA2dpStatusChangedHandler);
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this._adapter.removeEventListener('scostatuschanged',
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this._bindScoStatusChangedHandler);
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// unbind adapter
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this._adapter.removeEventListener('attributechanged',
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this._bindBtAdapterHandler);
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},
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/**
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* Update settings value and enable bluetooth hardware.
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*
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* @private
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*/
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_requestEnableHandler: function bt__requestEnableHandler() {
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this.debug('enabling bluetooth');
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if (this._adapter) {
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// the state will be dispatched in _btAdapterHandler
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this._adapter.enable().then(() => { //resolve
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this.debug('bluetooth enabled');
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}, () => { //reject
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this.debug('can not get bluetooth adapter');
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});
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} else { // return current state since we can't process the request
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this.debug('adapter is not available');
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this._dispatchEnableState();
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}
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},
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/**
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* Update settings value and disable bluetooth hardware.
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*
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* @private
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*/
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_requestDisableHandler: function bt__requestDisableHandler() {
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this.debug('disabling bluetooth');
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if (this._adapter) {
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// the state will be dispatched in _btAdapterHandler
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this._adapter.disable().then(() => { //resolve
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this.debug('bluetooth disabled');
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}, () => { //reject
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this.debug('can not get bluetooth adapter');
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});
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} else { // return current state since we can't process the request
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this.debug('adapter is not available');
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this._dispatchEnableState();
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}
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},
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/*
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* In file transfering case:
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* since System Message can't be listened in two js files within a app,
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* so we listen here but dispatch events to bluetooth_transfer.js
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* while getting bluetooth file transfer start system messages
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*
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* @private
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*/
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_oppTransferStartHandler: function(transferInfo) {
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this._setProfileConnected('opp', true);
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window.dispatchEvent(new CustomEvent('bluetooth-opp-transfer-start',
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{
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detail: { transferInfo: transferInfo }
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}
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));
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},
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/*
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* In file transfering case:
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* since System Message can't be listened in two js files within a app,
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* so we listen here but dispatch events to bluetooth_transfer.js
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* while getting bluetooth file transfer complete system messages
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*
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* @private
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*/
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_oppTransferCompleteHandler: function(transferInfo) {
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this._setProfileConnected('opp', false);
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window.dispatchEvent(new CustomEvent('bluetooth-opp-transfer-complete',
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{
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detail: { transferInfo: transferInfo }
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}
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));
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},
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/**
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* BT APIv2: Watch 'onattributechanged' event from
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* mozBluetooth.defaultAdapter for updating state information.
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*
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* @private
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* @param {Object} evt event object
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*/
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_btAdapterHandler:
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function bt__btAdapterHandler(evt) {
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for (var i in evt.attrs) {
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switch (evt.attrs[i]) {
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case 'state':
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if (this._adapter.state === 'enabled') {
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this.debug('state true');
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this._isEnabled = true;
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navigator.mozSettings.createLock()
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.set({'bluetooth.enabled': true});
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window.dispatchEvent(new CustomEvent('bluetooth-enabled'));
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this.icon && this.icon.update();
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} else if (this._adapter.state === 'disabled') {
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this.debug('state false');
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this._isEnabled = false;
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navigator.mozSettings.createLock()
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.set({'bluetooth.enabled': false});
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window.dispatchEvent(new CustomEvent('bluetooth-disabled'));
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this.icon && this.icon.update();
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}
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break;
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default:
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break;
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}
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}
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},
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/**
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* Watch 'onattributechanged' event from mozBluetooth for updating default
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* adapter information.
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*
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* 'onattributechanged' event description:
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* A handler to trigger when bluetooth manager's only property
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* defaultAdapter has changed.
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*
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* Here are three adapter change cases:
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*
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* null -> adapter: set new adapter and dispatch adapter state.
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* adapter -> null: clear defaultAdapter and listener.
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* adapterA -> adapterB: clean defaultAdapter and listener,
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* then set new adapter and dispatch adapter state.
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*
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* @private
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* @param {Object} evt event object
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*/
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_btManagerHandler:
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function bt__btManagerHandler(evt) {
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for (var i in evt.attrs) {
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switch (evt.attrs[i]) {
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// Default adapter attribute change.
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// Usually, it means that we reach new default adapter.
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case 'defaultAdapter':
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this.debug('defaultAdapter changed.');
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if (this._bluetooth.defaultAdapter) {
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if (this._adapter !== this._bluetooth.defaultAdapter) {
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if (this._adapter !== null) { // adapter A -> adapter B
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this.debug('origin adapter is removed');
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this._adapterUnavailableHandler();
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this._adapter = null;
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}
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// set new adapter and dispatch adapter state
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this.debug('new adapter is added');
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this._adapter = this._bluetooth.defaultAdapter;
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this._isEnabled = (this._adapter.state === 'enabled');
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// listen states when the adapter is available
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this._adapterAvailableHandler();
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}
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} else { // adapter -> null
|
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this.debug('default adapter is removed');
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this._adapterUnavailableHandler();
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this._adapter = null;
|
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}
|
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break;
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default:
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break;
|
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}
|
||||
}
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},
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/**
|
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* Dispatch bluetooth enable/disable state to system.
|
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*
|
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* @private
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*/
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_dispatchEnableState: function bt__dispatchEnableState() {
|
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if (this._isEnabled) {
|
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window.dispatchEvent(new CustomEvent('bluetooth-enabled'));
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} else {
|
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window.dispatchEvent(new CustomEvent('bluetooth-disabled'));
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}
|
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},
|
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/**
|
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* Get adapter from bluetooth through promise interface.
|
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* XXX: the function abstract the Bluetooth API difference.
|
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* We can remove it and use service query once BTv1 is deprecated.
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*
|
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* @public
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* @return {Promise} A promise that resolve the Bluetooth Adapter
|
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*/
|
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adapter: function bt__adapter() {
|
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return new Promise((resolve, reject) => {
|
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if (this._adapter !== null) {
|
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resolve(this._adapter);
|
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} else {
|
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this.debug('No BT adapter retrieved');
|
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reject();
|
||||
}
|
||||
});
|
||||
},
|
||||
|
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/**
|
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* Return device pairing result.
|
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* XXX: the function abstract the Bluetooth API difference.
|
||||
*
|
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* @public
|
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* @param {string} mac target device address
|
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* @return {Promise} A promise that resolve when pair successfully,
|
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* reject when pair failed
|
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*/
|
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pair: function bt__pair(mac) {
|
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return this._adapter.pair(mac);
|
||||
},
|
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|
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/**
|
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* Return paired devices list.
|
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* XXX: the function abstract the Bluetooth API difference.
|
||||
* We can use service query to return list once BTv1 is deprecated.
|
||||
*
|
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* @public
|
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* @returns {Object[]} sequence of BluetoothDevice
|
||||
*/
|
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getPairedDevices: function bt__getPairedDevices() {
|
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return this._adapter.getPairedDevices();
|
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},
|
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|
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/**
|
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* Return bluetooth adapter.
|
||||
*
|
||||
* @public
|
||||
*/
|
||||
get getAdapter() {
|
||||
return this._adapter;
|
||||
},
|
||||
|
||||
/**
|
||||
* Maintain bluetooth enable/disable state.
|
||||
*
|
||||
* @public
|
||||
*/
|
||||
get isEnabled() {
|
||||
return this._isEnabled;
|
||||
},
|
||||
|
||||
/**
|
||||
* Check if bluetooth OPP profile is connected.
|
||||
*
|
||||
* @public
|
||||
* @return {Boolean} connected state
|
||||
*/
|
||||
get isOPPProfileConnected() {
|
||||
return this._isProfileConnected('opp');
|
||||
},
|
||||
|
||||
/**
|
||||
* Check if bluetooth A2DP profile is connected.
|
||||
*
|
||||
* @public
|
||||
* @return {Boolean} connected state
|
||||
*/
|
||||
get isA2DPProfileConnected() {
|
||||
return this._isProfileConnected('a2dp');
|
||||
},
|
||||
|
||||
/**
|
||||
* Check if bluetooth SCO profile is connected.
|
||||
*
|
||||
* @public
|
||||
* @return {Boolean} connected state
|
||||
*/
|
||||
get isSCOProfileConnected() {
|
||||
return this._isProfileConnected('sco');
|
||||
},
|
||||
|
||||
/**
|
||||
* Check if any of bluetooth profiles is connected.
|
||||
* Referenced by Bluetooth icon update
|
||||
*
|
||||
* @public
|
||||
* @return {Boolean} connected state
|
||||
*/
|
||||
get connected() {
|
||||
return this._isProfileConnected('hfp') ||
|
||||
this._isProfileConnected('a2dp') ||
|
||||
this._isProfileConnected('opp');
|
||||
},
|
||||
|
||||
/**
|
||||
* Console log.
|
||||
*
|
||||
* @private
|
||||
* @param {Object} msg debug message
|
||||
*/
|
||||
debug: function bt_debug(msg) {
|
||||
if (!this.onDebug) {
|
||||
return;
|
||||
}
|
||||
|
||||
console.log('[System Bluetooth]: ' + msg);
|
||||
}
|
||||
};
|
||||
|
||||
exports.Bluetooth2 = Bluetooth;
|
||||
})(window);
|
||||
Loading…
Reference in a new issue