The Tor Browser: mobile/android/chrome/content/WebrtcUI.js@6474c204b198 (annotated)

mobile/android/chrome/content/WebrtcUI.js@6474c204b198 (annotated)

mobile/android/chrome/content/WebrtcUI.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 "use strict";
 XPCOMUtils.defineLazyModuleGetter(this, "Notifications", "resource://gre/modules/Notifications.jsm");
 var WebrtcUI = {
   _notificationId: null,
   observe: function(aSubject, aTopic, aData) {
     if (aTopic === "getUserMedia:request") {
       this.handleRequest(aSubject, aTopic, aData);
     } else if (aTopic === "recording-device-events") {
       switch (aData) {
         case "shutdown":
         case "starting":
           this.notify();
           break;
       }
     }
   },
   notify: function() {
     let windows = MediaManagerService.activeMediaCaptureWindows;
     let count = windows.Count();
     let msg = {};
     if (count == 0) {
       if (this._notificationId) {
         Notifications.cancel(this._notificationId);
         this._notificationId = null;
       }
     } else {
       let notificationOptions = {
         title: Strings.brand.GetStringFromName("brandShortName"),
         when: null, // hide the date row
         light: [0xFF9500FF, 1000, 1000],
         ongoing: true
       };
       let cameraActive = false;
       let audioActive = false;
       for (let i = 0; i < count; i++) {
         let win = windows.GetElementAt(i);
         let hasAudio = {};
         let hasVideo = {};
         MediaManagerService.mediaCaptureWindowState(win, hasVideo, hasAudio);
         if (hasVideo.value) cameraActive = true;
         if (hasAudio.value) audioActive = true;
       }
       if (cameraActive && audioActive) {
         notificationOptions.message = Strings.browser.GetStringFromName("getUserMedia.sharingCameraAndMicrophone.message2");
         notificationOptions.icon = "drawable:alert_mic_camera";
       } else if (cameraActive) {
         notificationOptions.message = Strings.browser.GetStringFromName("getUserMedia.sharingCamera.message2");
         notificationOptions.icon = "drawable:alert_camera";
       } else if (audioActive) {
         notificationOptions.message = Strings.browser.GetStringFromName("getUserMedia.sharingMicrophone.message2");
         notificationOptions.icon = "drawable:alert_mic";
       } else {
         // somethings wrong. lets throw
         throw "Couldn't find any cameras or microphones being used"
       }
       if (this._notificationId)
           Notifications.update(this._notificationId, notificationOptions);
       else
         this._notificationId = Notifications.create(notificationOptions);
       if (count > 1)
         msg.count = count;
     }
   },
   handleRequest: function handleRequest(aSubject, aTopic, aData) {
     let constraints = aSubject.getConstraints();
     let contentWindow = Services.wm.getOuterWindowWithId(aSubject.windowID);
     contentWindow.navigator.mozGetUserMediaDevices(
       constraints,
       function (devices) {
         WebrtcUI.prompt(contentWindow, aSubject.callID, constraints.audio,
                         constraints.video, devices);
       },
       function (error) {
         Cu.reportError(error);
       },
       aSubject.innerWindowID);
   },
   getDeviceButtons: function(audioDevices, videoDevices, aCallID) {
     return [{
       label: Strings.browser.GetStringFromName("getUserMedia.denyRequest.label"),
       callback: function() {
         Services.obs.notifyObservers(null, "getUserMedia:response:deny", aCallID);
       }
     },
     {
       label: Strings.browser.GetStringFromName("getUserMedia.shareRequest.label"),
       callback: function(checked /* ignored */, inputs) {
         let allowedDevices = Cc["@mozilla.org/supports-array;1"].createInstance(Ci.nsISupportsArray);
         let audioId = 0;
         if (inputs && inputs.audioDevice != undefined)
           audioId = inputs.audioDevice;
         if (audioDevices[audioId])
           allowedDevices.AppendElement(audioDevices[audioId]);
         let videoId = 0;
         if (inputs && inputs.videoDevice != undefined)
           videoId = inputs.videoDevice;
         if (videoDevices[videoId])
           allowedDevices.AppendElement(videoDevices[videoId]);
         Services.obs.notifyObservers(allowedDevices, "getUserMedia:response:allow", aCallID);
       }
     }];
   },
   // Get a list of string names for devices. Ensures that none of the strings are blank
   _getList: function(aDevices, aType) {
     let defaultCount = 0;
     return aDevices.map(function(device) {
         // if this is a Camera input, convert the name to something readable
         let res = /Camera\ \d+,\ Facing (front|back)/.exec(device.name);
         if (res)
           return Strings.browser.GetStringFromName("getUserMedia." + aType + "." + res[1] + "Camera");
         if (device.name.startsWith("&") && device.name.endsWith(";"))
           return Strings.browser.GetStringFromName(device.name.substring(1, device.name.length -1));
         if (device.name.trim() == "") {
           defaultCount++;
           return Strings.browser.formatStringFromName("getUserMedia." + aType + ".default", [defaultCount], 1);
         }
         return device.name
       }, this);
   },
   _addDevicesToOptions: function(aDevices, aType, aOptions, extraOptions) {
     if (aDevices.length) {
       // Filter out empty items from the list
       let list = this._getList(aDevices, aType);
       if (extraOptions)
         list = list.concat(extraOptions);
       if (list.length > 0) {
         aOptions.inputs.push({
           id: aType,
           type: "menulist",
           label: Strings.browser.GetStringFromName("getUserMedia." + aType + ".prompt"),
           values: list
         });
       }
     }
   },
   prompt: function prompt(aContentWindow, aCallID, aAudioRequested,
                           aVideoRequested, aDevices) {
     let audioDevices = [];
     let videoDevices = [];
     for (let device of aDevices) {
       device = device.QueryInterface(Ci.nsIMediaDevice);
       switch (device.type) {
       case "audio":
         if (aAudioRequested)
           audioDevices.push(device);
         break;
       case "video":
         if (aVideoRequested)
           videoDevices.push(device);
         break;
       }
     }
     let requestType;
     if (audioDevices.length && videoDevices.length)
       requestType = "CameraAndMicrophone";
     else if (audioDevices.length)
       requestType = "Microphone";
     else if (videoDevices.length)
       requestType = "Camera";
     else
       return;
     let host = aContentWindow.document.documentURIObject.host;
     let requestor = BrowserApp.manifest ? "'" + BrowserApp.manifest.name  + "'" : host;
     let message = Strings.browser.formatStringFromName("getUserMedia.share" + requestType + ".message", [ requestor ], 1);
     let options = { inputs: [] };
     // if the users only option would be to select "No Audio" or "No Video"
     // i.e. we're only showing audio or only video and there is only one device for that type
     // don't bother showing a menulist to select from
     var extraItems = null;
     if (videoDevices.length > 1 || audioDevices.length > 0) {
       // Only show the No Video option if there are also Audio devices to choose from
       if (audioDevices.length > 0)
         extraItems = [ Strings.browser.GetStringFromName("getUserMedia.videoDevice.none") ];
       this._addDevicesToOptions(videoDevices, "videoDevice", options, extraItems);
     }
     if (audioDevices.length > 1 || videoDevices.length > 0) {
       // Only show the No Audio option if there are also Video devices to choose from
       if (videoDevices.length > 0)
         extraItems = [ Strings.browser.GetStringFromName("getUserMedia.audioDevice.none") ];
       this._addDevicesToOptions(audioDevices, "audioDevice", options, extraItems);
     }
     let buttons = this.getDeviceButtons(audioDevices, videoDevices, aCallID);
     NativeWindow.doorhanger.show(message, "webrtc-request", buttons, BrowserApp.selectedTab.id, options);
   }
 }