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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
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Roy Tam
commit
dcd9973243
150858 changed files with 23884658 additions and 0 deletions
238
dom/presentation/provider/ReceiverStateMachine.jsm
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238
dom/presentation/provider/ReceiverStateMachine.jsm
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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* jshint esnext:true, globalstrict:true, moz:true, undef:true, unused:true */
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/* globals Components, dump */
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"use strict";
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this.EXPORTED_SYMBOLS = ["ReceiverStateMachine"]; // jshint ignore:line
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const { utils: Cu } = Components;
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/* globals State, CommandType */
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Cu.import("resource://gre/modules/presentation/StateMachineHelper.jsm");
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const DEBUG = false;
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function debug(str) {
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dump("-*- ReceiverStateMachine: " + str + "\n");
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}
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var handlers = [
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function _initHandler(stateMachine, command) {
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// shouldn't receive any command at init state
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DEBUG && debug("unexpected command: " + JSON.stringify(command)); // jshint ignore:line
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},
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function _connectingHandler(stateMachine, command) {
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switch (command.type) {
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case CommandType.CONNECT:
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stateMachine._sendCommand({
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type: CommandType.CONNECT_ACK
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});
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stateMachine.state = State.CONNECTED;
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stateMachine._notifyDeviceConnected(command.deviceId);
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break;
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case CommandType.DISCONNECT:
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stateMachine.state = State.CLOSED;
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stateMachine._notifyDisconnected(command.reason);
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break;
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default:
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debug("unexpected command: " + JSON.stringify(command));
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// ignore unexpected command
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break;
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}
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},
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function _connectedHandler(stateMachine, command) {
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switch (command.type) {
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case CommandType.DISCONNECT:
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stateMachine.state = State.CLOSED;
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stateMachine._notifyDisconnected(command.reason);
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break;
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case CommandType.LAUNCH:
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stateMachine._notifyLaunch(command.presentationId,
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command.url);
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stateMachine._sendCommand({
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type: CommandType.LAUNCH_ACK,
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presentationId: command.presentationId
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});
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break;
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case CommandType.TERMINATE:
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stateMachine._notifyTerminate(command.presentationId);
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break;
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case CommandType.TERMINATE_ACK:
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stateMachine._notifyTerminate(command.presentationId);
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break;
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case CommandType.OFFER:
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case CommandType.ICE_CANDIDATE:
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stateMachine._notifyChannelDescriptor(command);
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break;
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case CommandType.RECONNECT:
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stateMachine._notifyReconnect(command.presentationId,
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command.url);
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stateMachine._sendCommand({
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type: CommandType.RECONNECT_ACK,
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presentationId: command.presentationId
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});
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break;
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default:
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debug("unexpected command: " + JSON.stringify(command));
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// ignore unexpected command
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break;
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}
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},
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function _closingHandler(stateMachine, command) {
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switch (command.type) {
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case CommandType.DISCONNECT:
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stateMachine.state = State.CLOSED;
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stateMachine._notifyDisconnected(command.reason);
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break;
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default:
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debug("unexpected command: " + JSON.stringify(command));
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// ignore unexpected command
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break;
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}
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},
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function _closedHandler(stateMachine, command) {
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// ignore every command in closed state.
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DEBUG && debug("unexpected command: " + JSON.stringify(command)); // jshint ignore:line
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},
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];
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function ReceiverStateMachine(channel) {
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this.state = State.INIT;
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this._channel = channel;
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}
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ReceiverStateMachine.prototype = {
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launch: function _launch() {
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// presentation session can only be launched by controlling UA.
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debug("receiver shouldn't trigger launch");
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},
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terminate: function _terminate(presentationId) {
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if (this.state === State.CONNECTED) {
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this._sendCommand({
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type: CommandType.TERMINATE,
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presentationId: presentationId,
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});
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}
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},
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terminateAck: function _terminateAck(presentationId) {
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if (this.state === State.CONNECTED) {
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this._sendCommand({
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type: CommandType.TERMINATE_ACK,
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presentationId: presentationId,
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});
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}
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},
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reconnect: function _reconnect() {
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debug("receiver shouldn't trigger reconnect");
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},
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sendOffer: function _sendOffer() {
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// offer can only be sent by controlling UA.
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debug("receiver shouldn't generate offer");
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},
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sendAnswer: function _sendAnswer(answer) {
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if (this.state === State.CONNECTED) {
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this._sendCommand({
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type: CommandType.ANSWER,
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answer: answer,
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});
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}
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},
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updateIceCandidate: function _updateIceCandidate(candidate) {
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if (this.state === State.CONNECTED) {
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this._sendCommand({
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type: CommandType.ICE_CANDIDATE,
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candidate: candidate,
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});
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}
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},
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onCommand: function _onCommand(command) {
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handlers[this.state](this, command);
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},
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onChannelReady: function _onChannelReady() {
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if (this.state === State.INIT) {
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this.state = State.CONNECTING;
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}
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},
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onChannelClosed: function _onChannelClose(reason, isByRemote) {
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switch (this.state) {
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case State.CONNECTED:
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if (isByRemote) {
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this.state = State.CLOSED;
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this._notifyDisconnected(reason);
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} else {
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this._sendCommand({
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type: CommandType.DISCONNECT,
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reason: reason
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});
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this.state = State.CLOSING;
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this._closeReason = reason;
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}
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break;
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case State.CLOSING:
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if (isByRemote) {
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this.state = State.CLOSED;
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if (this._closeReason) {
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reason = this._closeReason;
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delete this._closeReason;
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}
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this._notifyDisconnected(reason);
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} else {
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// do nothing and wait for remote channel closed.
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}
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break;
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default:
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DEBUG && debug("unexpected channel close: " + reason + ", " + isByRemote); // jshint ignore:line
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break;
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}
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},
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_sendCommand: function _sendCommand(command) {
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this._channel.sendCommand(command);
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},
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_notifyDeviceConnected: function _notifyDeviceConnected(deviceName) {
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this._channel.notifyDeviceConnected(deviceName);
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},
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_notifyDisconnected: function _notifyDisconnected(reason) {
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this._channel.notifyDisconnected(reason);
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},
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_notifyLaunch: function _notifyLaunch(presentationId, url) {
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this._channel.notifyLaunch(presentationId, url);
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},
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_notifyTerminate: function _notifyTerminate(presentationId) {
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this._channel.notifyTerminate(presentationId);
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},
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_notifyReconnect: function _notifyReconnect(presentationId, url) {
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this._channel.notifyReconnect(presentationId, url);
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},
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_notifyChannelDescriptor: function _notifyChannelDescriptor(command) {
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switch (command.type) {
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case CommandType.OFFER:
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this._channel.notifyOffer(command.offer);
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break;
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case CommandType.ICE_CANDIDATE:
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this._channel.notifyIceCandidate(command.candidate);
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break;
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}
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},
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};
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this.ReceiverStateMachine = ReceiverStateMachine; // jshint ignore:line
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