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110 lines
3.0 KiB
JavaScript
110 lines
3.0 KiB
JavaScript
/* 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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this.EXPORTED_SYMBOLS = ["TelephonyUtils"];
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const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Promise.jsm");
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/* global TelephonyService */
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XPCOMUtils.defineLazyServiceGetter(this,
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"TelephonyService",
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"@mozilla.org/telephony/telephonyservice;1",
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"nsITelephonyService");
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function getCurrentCalls(aFilter) {
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if (aFilter === undefined) {
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aFilter = call => true;
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}
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let calls = [];
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// nsITelephonyService.enumerateCalls is synchronous.
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TelephonyService.enumerateCalls({
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QueryInterface: XPCOMUtils.generateQI([Ci.nsITelephonyListener]),
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enumerateCallStateComplete: function() {},
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enumerateCallState: function(call) {
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if (aFilter(call)) {
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calls.push(call);
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}
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},
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});
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return calls;
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}
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this.TelephonyUtils = {
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/**
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* Check whether there are any calls.
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*
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* @param aClientId [optional] If provided, only check on aClientId
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* @return boolean
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*/
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hasAnyCalls: function(aClientId) {
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let calls = getCurrentCalls(call => {
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if (aClientId !== undefined && call.clientId !== aClientId) {
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return false;
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}
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return true;
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});
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return calls.length !== 0;
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},
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/**
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* Check whether there are any connected calls.
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*
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* @param aClientId [optional] If provided, only check on aClientId
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* @return boolean
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*/
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hasConnectedCalls: function(aClientId) {
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let calls = getCurrentCalls(call => {
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if (aClientId !== undefined && call.clientId !== aClientId) {
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return false;
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}
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return call.callState === Ci.nsITelephonyService.CALL_STATE_CONNECTED;
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});
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return calls.length !== 0;
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},
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/**
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* Return a promise which will be resolved when there are no calls.
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*
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* @param aClientId [optional] only check on aClientId if provided
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* @return Promise
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*/
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waitForNoCalls: function(aClientId) {
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if (!this.hasAnyCalls(aClientId)) {
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return Promise.resolve();
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}
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let self = this;
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return new Promise(resolve => {
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let listener = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsITelephonyListener]),
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enumerateCallStateComplete: function() {},
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enumerateCallState: function() {},
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callStateChanged: function() {
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if (!self.hasAnyCalls(aClientId)) {
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TelephonyService.unregisterListener(this);
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resolve();
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}
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},
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supplementaryServiceNotification: function() {},
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notifyError: function() {},
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notifyCdmaCallWaiting: function() {},
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notifyConferenceError: function() {}
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};
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TelephonyService.registerListener(listener);
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});
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}
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};
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