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