зеркало из https://github.com/mozilla/gecko-dev.git
88 строки
2.9 KiB
JavaScript
88 строки
2.9 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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function debug(aMsg) {
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//dump("-*- B2GPresentationDevicePrompt: " + aMsg + "\n");
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}
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const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
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const kB2GPRESENTATIONDEVICEPROMPT_CONTRACTID = "@mozilla.org/presentation-device/prompt;1";
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const kB2GPRESENTATIONDEVICEPROMPT_CID = Components.ID("{4a300c26-e99b-4018-ab9b-c48cf9bc4de1}");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",
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"resource://gre/modules/SystemAppProxy.jsm");
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function B2GPresentationDevicePrompt() {}
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B2GPresentationDevicePrompt.prototype = {
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classID: kB2GPRESENTATIONDEVICEPROMPT_CID,
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contractID: kB2GPRESENTATIONDEVICEPROMPT_CONTRACTID,
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classDescription: "B2G Presentation Device Prompt",
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIPresentationDevicePrompt]),
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// nsIPresentationDevicePrompt
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promptDeviceSelection: function(aRequest) {
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let self = this;
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let requestId = Cc["@mozilla.org/uuid-generator;1"]
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.getService(Ci.nsIUUIDGenerator).generateUUID().toString();
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SystemAppProxy.addEventListener("mozContentEvent", function contentEvent(aEvent) {
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let detail = aEvent.detail;
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if (detail.id !== requestId) {
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return;
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}
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SystemAppProxy.removeEventListener("mozContentEvent", contentEvent);
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switch (detail.type) {
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case "presentation-select-result":
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debug("device " + detail.deviceId + " is selected by user");
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let device = self._getDeviceById(detail.deviceId);
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if (!device) {
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debug("cancel request because device is not found");
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aRequest.cancel();
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}
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aRequest.select(device);
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break;
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case "presentation-select-deny":
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debug("request canceled by user");
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aRequest.cancel();
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break;
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}
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});
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let detail = {
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type: "presentation-select-device",
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origin: aRequest.origin,
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requestURL: aRequest.requestURL,
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id: requestId,
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};
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SystemAppProxy.dispatchEvent(detail);
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},
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_getDeviceById: function(aDeviceId) {
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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().QueryInterface(Ci.nsIArray);
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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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if (device.id === aDeviceId) {
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return device;
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}
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}
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return null;
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},
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([B2GPresentationDevicePrompt]);
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