michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: "use strict";
michael@0: 
michael@0: this.EXPORTED_SYMBOLS = [];
michael@0: 
michael@0: let Cc = Components.classes;
michael@0: let Ci = Components.interfaces;
michael@0: let Cu = Components.utils;
michael@0: 
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: Cu.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0: 
michael@0: function handleRequest(aSubject, aTopic, aData) {
michael@0:   let { windowID, callID } = aSubject;
michael@0:   let constraints = aSubject.getConstraints();
michael@0:   let contentWindow = Services.wm.getOuterWindowWithId(windowID);
michael@0: 
michael@0:   contentWindow.navigator.mozGetUserMediaDevices(
michael@0:     constraints,
michael@0:     function (devices) {
michael@0:       prompt(contentWindow, callID, constraints.audio,
michael@0:              constraints.video || constraints.picture,
michael@0:              devices);
michael@0:     },
michael@0:     function (error) {
michael@0:       denyRequest(callID, error);
michael@0:     });
michael@0: }
michael@0: 
michael@0: function prompt(aWindow, aCallID, aAudioRequested, aVideoRequested, aDevices) {
michael@0:   let audioDevices = [];
michael@0:   let videoDevices = [];
michael@0:   for (let device of aDevices) {
michael@0:     device = device.QueryInterface(Ci.nsIMediaDevice);
michael@0:     switch (device.type) {
michael@0:       case "audio":
michael@0:         if (aAudioRequested) {
michael@0:           audioDevices.push(device);
michael@0:         }
michael@0:         break;
michael@0: 
michael@0:       case "video":
michael@0:         if (aVideoRequested) {
michael@0:           videoDevices.push(device);
michael@0:         }
michael@0:         break;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (audioDevices.length == 0 && videoDevices.length == 0) {
michael@0:     denyRequest(aCallID);
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   let params = {
michael@0:                  videoDevices: videoDevices,
michael@0:                  audioDevices: audioDevices,
michael@0:                  out: null
michael@0:                };
michael@0:   aWindow.openDialog("chrome://webapprt/content/getUserMediaDialog.xul", "",
michael@0:                      "chrome, dialog, modal", params).focus();
michael@0: 
michael@0:   if (!params.out) {
michael@0:     denyRequest(aCallID);
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   let allowedDevices = Cc["@mozilla.org/supports-array;1"].
michael@0:                        createInstance(Ci.nsISupportsArray);
michael@0:   let videoIndex = params.out.video;
michael@0:   let audioIndex = params.out.audio;
michael@0: 
michael@0:   if (videoIndex != -1) {
michael@0:     allowedDevices.AppendElement(videoDevices[videoIndex]);
michael@0:   }
michael@0: 
michael@0:   if (audioIndex != -1) {
michael@0:     allowedDevices.AppendElement(audioDevices[audioIndex]);
michael@0:   }
michael@0: 
michael@0:   if (allowedDevices.Count()) {
michael@0:     Services.obs.notifyObservers(allowedDevices, "getUserMedia:response:allow",
michael@0:                                  aCallID);
michael@0:   } else {
michael@0:     denyRequest(aCallID);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function denyRequest(aCallID, aError) {
michael@0:   let msg = null;
michael@0:   if (aError) {
michael@0:     msg = Cc["@mozilla.org/supports-string;1"].
michael@0:           createInstance(Ci.nsISupportsString);
michael@0:     msg.data = aError;
michael@0:   }
michael@0: 
michael@0:   Services.obs.notifyObservers(msg, "getUserMedia:response:deny", aCallID);
michael@0: }
michael@0: 
michael@0: Services.obs.addObserver(handleRequest, "getUserMedia:request", false);