зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
3.6 KiB
JavaScript
121 строка
3.6 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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const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/DOMRequestHelper.jsm");
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function log(aMsg) {
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//dump("-*- PresentationDeviceInfoManager.js : " + aMsg + "\n");
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}
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const PRESENTATIONDEVICEINFOMANAGER_CID = Components.ID("{1bd66bef-f643-4be3-b690-0c656353eafd}");
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const PRESENTATIONDEVICEINFOMANAGER_CONTRACTID = "@mozilla.org/presentation-device/deviceInfo;1";
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XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
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"@mozilla.org/childprocessmessagemanager;1",
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"nsIMessageSender");
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function PresentationDeviceInfoManager() {}
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PresentationDeviceInfoManager.prototype = {
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__proto__: DOMRequestIpcHelper.prototype,
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classID: PRESENTATIONDEVICEINFOMANAGER_CID,
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contractID: PRESENTATIONDEVICEINFOMANAGER_CONTRACTID,
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QueryInterface: XPCOMUtils.generateQI([Ci.nsISupportsWeakReference,
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Ci.nsIObserver,
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Ci.nsIDOMGlobalPropertyInitializer]),
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receiveMessage: function(aMsg) {
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if (!aMsg || !aMsg.data) {
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return;
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}
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let data = aMsg.data;
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log("receive aMsg: " + aMsg.name);
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switch (aMsg.name) {
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case "PresentationDeviceInfoManager:OnDeviceChange": {
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let detail = {
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detail: {
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type: data.type,
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deviceInfo: data.deviceInfo,
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}
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};
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let event = new this._window.CustomEvent("devicechange", Cu.cloneInto(detail, this._window));
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this.__DOM_IMPL__.dispatchEvent(event);
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break;
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}
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case "PresentationDeviceInfoManager:GetAll:Result:Ok": {
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let resolver = this.takePromiseResolver(data.requestId);
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if (!resolver) {
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return;
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}
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resolver.resolve(Cu.cloneInto(data.devices, this._window));
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break;
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}
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case "PresentationDeviceInfoManager:GetAll:Result:Error": {
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let resolver = this.takePromiseResolver(data.requestId);
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if (!resolver) {
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return;
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}
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resolver.reject(data.error);
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break;
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}
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}
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},
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init: function(aWin) {
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log("init");
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this.initDOMRequestHelper(aWin, [
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{name: "PresentationDeviceInfoManager:OnDeviceChange", weakRef: true},
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{name: "PresentationDeviceInfoManager:GetAll:Result:Ok", weakRef: true},
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{name: "PresentationDeviceInfoManager:GetAll:Result:Error", weakRef: true},
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]);
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},
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uninit: function() {
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log("uninit");
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let self = this;
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this.forEachPromiseResolver(function(aKey) {
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self.takePromiseResolver(aKey).reject("PresentationDeviceInfoManager got destroyed");
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});
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},
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get ondevicechange() {
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return this.__DOM_IMPL__.getEventHandler("ondevicechange");
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},
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set ondevicechange(aHandler) {
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this.__DOM_IMPL__.setEventHandler("ondevicechange", aHandler);
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},
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getAll: function() {
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log("getAll");
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let self = this;
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return this.createPromise(function(aResolve, aReject) {
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let resolverId = self.getPromiseResolverId({ resolve: aResolve, reject: aReject });
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cpmm.sendAsyncMessage("PresentationDeviceInfoManager:GetAll", {
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requestId: resolverId,
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});
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});
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},
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forceDiscovery: function() {
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cpmm.sendAsyncMessage("PresentationDeviceInfoManager:ForceDiscovery");
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},
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PresentationDeviceInfoManager]);
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