зеркало из https://github.com/mozilla/gecko-dev.git
136 строки
4.1 KiB
JavaScript
136 строки
4.1 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
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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 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 {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
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const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
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ChromeUtils.defineModuleGetter(this, "Prompt",
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"resource://gre/modules/Prompt.jsm");
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ChromeUtils.defineModuleGetter(this, "UITelemetry",
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"resource://gre/modules/UITelemetry.jsm");
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const kPRESENTATIONDEVICEPROMPT_CONTRACTID = "@mozilla.org/presentation-device/prompt;1";
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const kPRESENTATIONDEVICEPROMPT_CID = Components.ID("{388bd149-c919-4a43-b646-d7ec57877689}");
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function debug(aMsg) {
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// dump("-*- PresentationDevicePrompt: " + aMsg + "\n");
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}
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// nsIPresentationDevicePrompt
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function PresentationDevicePrompt() {
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debug("PresentationDevicePrompt init");
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}
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PresentationDevicePrompt.prototype = {
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classID: kPRESENTATIONDEVICEPROMPT_CID,
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contractID: kPRESENTATIONDEVICEPROMPT_CONTRACTID,
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classDescription: "Fennec Presentation Device Prompt",
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QueryInterface: ChromeUtils.generateQI([Ci.nsIPresentationDevicePrompt]),
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_devices: [], // Store all available presentation devices
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_request: null, // Store the request from presentation api
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_getString: function(aName) {
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debug("_getString");
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if (!this.bundle) {
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this.bundle = Services.strings.createBundle("chrome://browser/locale/devicePrompt.properties");
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}
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return this.bundle.GetStringFromName(aName);
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},
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_loadDevices: function(requestURLs) {
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debug("_loadDevices");
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let deviceManager = Cc["@mozilla.org/presentation-device/manager;1"]
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.getService(Ci.nsIPresentationDeviceManager);
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let devices = deviceManager.getAvailableDevices(requestURLs).QueryInterface(Ci.nsIArray);
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// Re-load the available devices
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this._devices = [];
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for (let i = 0; i < devices.length; i++) {
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let device = devices.queryElementAt(i, Ci.nsIPresentationDevice);
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this._devices.push(device);
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}
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},
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_getPromptMenu: function(aDevices) {
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debug("_getPromptMenu");
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return aDevices.map(function(device) {
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return { label: device.name };
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});
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},
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_getPrompt: function(aTitle, aMenu, aWindow) {
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debug("_getPrompt");
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let p = new Prompt({
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window: aWindow,
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title: aTitle,
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});
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p.setSingleChoiceItems(aMenu);
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return p;
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},
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_showPrompt: function(aPrompt, aCallback) {
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debug("_showPrompt");
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aPrompt.show(function(data) {
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let buttonIndex = data.button;
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aCallback(buttonIndex);
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});
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},
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_selectDevice: function(aIndex) {
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debug("_selectDevice");
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if (!this._request) {
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return;
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}
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if (aIndex < 0) { // Cancel request if no selected device,
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this._request.cancel(Cr.NS_ERROR_DOM_NOT_ALLOWED_ERR);
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return;
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} else if (!this._devices.length) { // or there is no available devices
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this._request.cancel(Cr.NS_ERROR_DOM_NOT_FOUND_ERR);
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return;
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}
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this._request.select(this._devices[aIndex]);
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},
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// This will be fired when window.PresentationRequest(URL).start() is called
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promptDeviceSelection: function(aRequest) {
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debug("promptDeviceSelection");
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// Load available presentation devices into this._devices
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this._loadDevices(aRequest.requestURLs);
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if (!this._devices.length) { // Cancel request if no available device
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aRequest.cancel(Cr.NS_ERROR_DOM_NOT_FOUND_ERR);
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return;
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}
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this._request = aRequest;
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let prompt = this._getPrompt(this._getString("deviceMenu.title"),
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this._getPromptMenu(this._devices),
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aRequest.chromeEventHandler &&
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aRequest.chromeEventHandler.ownerGlobal);
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this._showPrompt(prompt, this._selectDevice.bind(this));
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UITelemetry.addEvent("show.1", "dialog", null, "prompt_device_selection");
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},
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PresentationDevicePrompt]);
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