pjs/dom/telephony/Telephony.js

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JavaScript

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Telephony.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Philipp von Weitershausen <philipp@weitershausen.de>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
const TELEPHONY_CID = Components.ID("{37e248d2-02ff-469b-bb31-eef5a4a4bee3}");
const TELEPHONY_CONTRACTID = "@mozilla.org/telephony;1";
const TELEPHONY_CALL_CID = Components.ID("{6b9b3daf-e5ea-460b-89a5-641ee20dd577}");
const TELEPHONY_CALL_CONTRACTID = "@mozilla.org/telephony-call;1";
const DOM_RADIOSTATE_UNAVAILABLE = "unavailable";
const DOM_RADIOSTATE_OFF = "off";
const DOM_RADIOSTATE_READY = "ready";
const DOM_CARDSTATE_UNAVAILABLE = "unavailable";
const DOM_CARDSTATE_ABSENT = "absent";
const DOM_CARDSTATE_PIN_REQUIRED = "pin_required";
const DOM_CARDSTATE_PUK_REQUIRED = "puk_required";
const DOM_CARDSTATE_NETWORK_LOCKED = "network_locked";
const DOM_CARDSTATE_NOT_READY = "not_ready";
const DOM_CARDSTATE_READY = "ready";
const DOM_CALL_READYSTATE_DIALING = "dialing";
const DOM_CALL_READYSTATE_RINGING = "ringing";
const DOM_CALL_READYSTATE_BUSY = "busy";
const DOM_CALL_READYSTATE_CONNECTING = "connecting";
const DOM_CALL_READYSTATE_CONNECTED = "connected";
const DOM_CALL_READYSTATE_DISCONNECTING = "disconnecting";
const DOM_CALL_READYSTATE_DISCONNECTED = "disconnected";
const DOM_CALL_READYSTATE_INCOMING = "incoming";
const DOM_CALL_READYSTATE_HOLDING = "holding";
const DOM_CALL_READYSTATE_HELD = "held";
const CALLINDEX_TEMPORARY_DIALING = -1;
/**
* Define an event listener slot on an object, e.g.
*
* obj.onerror = function () {...}
*
* will register the function as an event handler for the "error" event
* if the "error" slot was defined on 'obj' or its prototype.
*/
function defineEventListenerSlot(object, event_type) {
let property_name = "on" + event_type;
let hidden_name = "_on" + event_type;
let bound_name = "_bound_on" + event_type;
object.__defineGetter__(property_name, function getter() {
return this[hidden_name];
});
object.__defineSetter__(property_name, function setter(handler) {
let old_handler = this[bound_name];
if (old_handler) {
this.removeEventListener(event_type, old_handler);
}
// Bind the handler to the object so that its 'this' is correct.
let bound_handler = handler.bind(this);
this.addEventListener(event_type, bound_handler);
this[hidden_name] = handler;
this[bound_name] = bound_handler;
});
}
/**
* Base object for event targets.
*/
function EventTarget() {}
EventTarget.prototype = {
addEventListener: function addEventListener(type, handler) {
//TODO verify that handler is an nsIDOMEventListener (or function)
if (!this._listeners) {
this._listeners = {};
}
if (!this._listeners[type]) {
this._listeners[type] = [];
}
if (this._listeners[type].indexOf(handler) != -1) {
// The handler is already registered. Ignore.
return;
}
this._listeners[type].push(handler);
},
removeEventListener: function removeEventListener(type, handler) {
let list, index;
if (this._listeners &&
(list = this._listeners[type]) &&
(index = list.indexOf(handler) != -1)) {
list.splice(index, 1);
return;
}
},
dispatchEvent: function dispatchEvent(event) {
//TODO this does not deal with bubbling, defaultPrevented, canceling, etc.
//TODO disallow re-dispatch of the same event if it's already being
// dispatched (recursion).
if (!this._listeners) {
return;
}
let handlerList = this._listeners[event.type];
if (!handlerList) {
return;
}
event.target = this;
// We need to worry about event handler mutations during the event firing.
// The correct behaviour is to *not* call any listeners that are added
// during the firing and to *not* call any listeners that are removed
// during the firing. To address this, we make a copy of the listener list
// before dispatching and then double-check that each handler is still
// registered before firing it.
let handlers = handlerList.slice();
handlers.forEach(function (handler) {
if (handlerList.indexOf(handler) == -1) {
return;
}
switch (typeof handler) {
case "function":
handler(event);
break;
case "object":
handler.handleEvent(event);
break;
}
});
}
};
/**
* Callback object that Telephony registers with nsITelephone.
* Telephony can't use itself because that might overload event handler
* attributes ('onfoobar').
*/
function TelephoneCallback(telephony) {
this.telephony = telephony;
}
TelephoneCallback.prototype = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsITelephoneCallback]),
// nsITelephoneCallback
onsignalstrengthchange: function onsignalstrengthchange(event) {
this.telephony.signalStrength = event.signalStrength;
this.telephony._dispatchEventByType("signalstrengthchange");
},
onoperatorchange: function onoperatorchange(event) {
this.telephony.operator = event.operator;
this.telephony._dispatchEventByType("operatorchange");
},
onradiostatechange: function onradiostatechange(event) {
this.telephony.radioState = event.radioState;
this.telephony._dispatchEventByType("radiostatechange");
},
oncardstatechange: function oncardstatechange(event) {
this.telephony.cardState = event.cardState;
this.telephony._dispatchEventByType("cardstatechange");
},
oncallstatechange: function oncallstatechange(event) {
this.telephony._processCallState(event);
},
};
/**
* The navigator.mozTelephony object.
*/
function Telephony() {}
Telephony.prototype = {
__proto__: EventTarget.prototype,
classID: TELEPHONY_CID,
classInfo: XPCOMUtils.generateCI({classID: TELEPHONY_CID,
contractID: TELEPHONY_CONTRACTID,
interfaces: [Ci.mozIDOMTelephony,
Ci.nsIDOMEventTarget],
flags: Ci.nsIClassInfo.DOM_OBJECT,
classDescription: "Telephony"}),
QueryInterface: XPCOMUtils.generateQI([Ci.mozIDOMTelephony,
Ci.nsIDOMEventTarget,
Ci.nsIDOMGlobalPropertyInitializer]),
// nsIDOMGlobalPropertyInitializer
init: function init(window) {
this.window = window;
this.telephone = Cc["@mozilla.org/telephony/radio-interface;1"]
.createInstance(Ci.nsITelephone);
this.telephoneCallback = new TelephoneCallback(this);
//TODO switch to method suggested by bz in bug 707507
window.addEventListener("unload", function onunload(event) {
this.telephone.unregisterCallback(this.telephoneCallback);
this.telephoneCallback = null;
this.window = null;
}.bind(this));
this.telephone.registerCallback(this.telephoneCallback);
this.callsByIndex = {};
this.liveCalls = [];
// Populate existing state.
let currentState = this.telephone.currentState;
let states = currentState.currentCalls;
for (let i = 0; i < states.length; i++) {
let state = states[i];
let call = new TelephonyCall(this.telephone, state.callIndex);
call.readyState = state.callState;
call.number = state.number;
this.liveCalls.push(call);
this.callsByIndex[state.callIndex] = call;
}
this.operator = currentState.operator;
this.radioState = currentState.radioState;
this.cardState = currentState.cardState;
this.signalStrength = currentState.signalStrength;
},
_dispatchEventByType: function _dispatchEventByType(type) {
let event = this.window.document.createEvent("Event");
event.initEvent(type, false, false);
//event.isTrusted = true;
this.dispatchEvent(event);
},
_dispatchCallEvent: function _dispatchCallEvent(call, type, target) {
let event = this.window.document.createEvent("Event");
event.initEvent(type, false, false);
event.call = call; //XXX this is probably not going to work
//event.isTrusted = true;
target = target || call;
target.dispatchEvent(event);
},
_processCallState: function _processCallState(state) {
// If the call is dialing, chances are good that we just kicked that off
// so there's a call object without a callIndex. Let's fix that.
if (state.callState == DOM_CALL_READYSTATE_DIALING) {
let call = this.callsByIndex[CALLINDEX_TEMPORARY_DIALING];
if (call) {
call.callIndex = state.callIndex;
delete this.callsByIndex[CALLINDEX_TEMPORARY_DIALING];
this.callsByIndex[call.callIndex] = call;
// Nothing else to do, since the initial call state will already be
// DOM_CALL_READYSTATE_DIALING, so there's no event to dispatch.
return;
}
}
// If there is an existing call object, update state and dispatch event
// on it.
let call = this.callsByIndex[state.callIndex];
if (call) {
if (call.readyState == state.callState) {
// No change in ready state, don't dispatch an event.
return;
}
if (state.readyState == DOM_CALL_READYSTATE_DISCONNECTED) {
let index = this.liveCalls.indexOf(call);
if (index != -1) {
this.liveCalls.splice(index, 1);
}
delete this.callsByIndex[call.callIndex];
}
call.readyState = state.callState;
this._dispatchCallEvent(call, "readystatechange");
this._dispatchCallEvent(call, state.callState);
return;
}
// There's no call object yet, so let's create a new one, except when
// the state notified means that the call is over.
if (state.readyState == DOM_CALL_READYSTATE_DISCONNECTED) {
return;
}
call = new TelephonyCall(this.telephone, state.callIndex);
call.number = state.number;
call.readyState = state.callState;
this.callsByIndex[state.callIndex] = call;
this.liveCalls.push(call);
let target;
if (call.readyState == DOM_CALL_READYSTATE_INCOMING) {
target = this;
} else {
target = call;
this._dispatchCallEvent(call, "readystatechange");
}
this._dispatchCallEvent(call, state.callState, target);
},
callsByIndex: null,
// mozIDOMTelephony
liveCalls: null,
dial: function dial(number) {
this.telephone.dial(number);
// We don't know ahead of time what callIndex the call is going to have
// so let's assign a temp value for now and sort it out on the first
// 'callstatechange' event.
//TODO ensure there isn't already an outgoing call
let callIndex = CALLINDEX_TEMPORARY_DIALING;
let call = new TelephonyCall(this.telephone, callIndex);
call.readyState = DOM_CALL_READYSTATE_DIALING;
call.number = number;
this.callsByIndex[callIndex] = call;
this.liveCalls.push(call);
return call;
},
get muted() {
return this.telephone.microphoneMuted;
},
set muted(value) {
this.telephone.microphoneMuted = value;
},
get speakerOn() {
return this.telephone.speakerEnabled;
},
set speakerOn(value) {
this.telephone.speakerEnabled = value;
},
// Additional stuff that's useful.
signalStrength: null,
operator: null,
radioState: DOM_RADIOSTATE_UNAVAILABLE,
cardState: DOM_CARDSTATE_UNAVAILABLE,
};
defineEventListenerSlot(Telephony.prototype, DOM_CALL_READYSTATE_INCOMING);
//XXX philikon's additions
defineEventListenerSlot(Telephony.prototype, "radiostatechange");
defineEventListenerSlot(Telephony.prototype, "cardstatechange");
defineEventListenerSlot(Telephony.prototype, "signalstrengthchange");
defineEventListenerSlot(Telephony.prototype, "operatorchange");
function TelephonyCall(telephone, callIndex) {
this.telephone = telephone;
this.callIndex = callIndex;
}
TelephonyCall.prototype = {
__proto__: EventTarget.prototype,
classID: TELEPHONY_CALL_CID,
classInfo: XPCOMUtils.generateCI({classID: TELEPHONY_CALL_CID,
contractID: TELEPHONY_CALL_CONTRACTID,
interfaces: [Ci.mozIDOMTelephonyCall,
Ci.nsIDOMEventTarget],
flags: Ci.nsIClassInfo.DOM_OBJECT,
classDescription: "TelephonyCall"}),
QueryInterface: XPCOMUtils.generateQI([Ci.mozIDOMTelephonyCall,
Ci.nsIDOMEventTarget]),
callIndex: null,
// mozIDOMTelephonyCall
number: null,
readyState: null,
answer: function answer() {
if (this.readyState != DOM_CALL_READYSTATE_INCOMING) {
throw "Can only answer an incoming call!";
}
this.telephone.answerCall();
},
disconnect: function disconnect() {
if (this.readyState == DOM_CALL_READYSTATE_INCOMING) {
this.telephone.rejectCall();
} else {
this.telephone.hangUp(this.callIndex);
}
},
};
defineEventListenerSlot(TelephonyCall.prototype, "readystatechange");
defineEventListenerSlot(TelephonyCall.prototype, DOM_CALL_READYSTATE_RINGING);
defineEventListenerSlot(TelephonyCall.prototype, DOM_CALL_READYSTATE_BUSY);
defineEventListenerSlot(TelephonyCall.prototype, DOM_CALL_READYSTATE_CONNECTING);
defineEventListenerSlot(TelephonyCall.prototype, DOM_CALL_READYSTATE_CONNECTED);
defineEventListenerSlot(TelephonyCall.prototype, DOM_CALL_READYSTATE_DISCONNECTING);
defineEventListenerSlot(TelephonyCall.prototype, DOM_CALL_READYSTATE_DISCONNECTED);
const NSGetFactory = XPCOMUtils.generateNSGetFactory([Telephony]);