gecko/browser/modules/webrtcUI.jsm

408 lines
15 KiB
JavaScript

/* 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";
this.EXPORTED_SYMBOLS = ["webrtcUI"];
const Cu = Components.utils;
const Cc = Components.classes;
const Ci = Components.interfaces;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "PluralForm",
"resource://gre/modules/PluralForm.jsm");
XPCOMUtils.defineLazyServiceGetter(this, "MediaManagerService",
"@mozilla.org/mediaManagerService;1",
"nsIMediaManagerService");
this.webrtcUI = {
init: function () {
Services.obs.addObserver(handleRequest, "getUserMedia:request", false);
Services.obs.addObserver(updateIndicators, "recording-device-events", false);
Services.obs.addObserver(removeBrowserSpecificIndicator, "recording-window-ended", false);
},
uninit: function () {
Services.obs.removeObserver(handleRequest, "getUserMedia:request");
Services.obs.removeObserver(updateIndicators, "recording-device-events");
Services.obs.removeObserver(removeBrowserSpecificIndicator, "recording-window-ended");
},
showGlobalIndicator: false,
get activeStreams() {
let contentWindowSupportsArray = MediaManagerService.activeMediaCaptureWindows;
let count = contentWindowSupportsArray.Count();
let activeStreams = [];
for (let i = 0; i < count; i++) {
let contentWindow = contentWindowSupportsArray.GetElementAt(i);
let browser = getBrowserForWindow(contentWindow);
let browserWindow = browser.ownerDocument.defaultView;
let tab = browserWindow.gBrowser &&
browserWindow.gBrowser._getTabForContentWindow(contentWindow.top);
activeStreams.push({
uri: contentWindow.location.href,
tab: tab,
browser: browser
});
}
return activeStreams;
}
}
function getBrowserForWindowId(aWindowID) {
return getBrowserForWindow(Services.wm.getOuterWindowWithId(aWindowID));
}
function getBrowserForWindow(aContentWindow) {
return aContentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebNavigation)
.QueryInterface(Ci.nsIDocShell)
.chromeEventHandler;
}
function handleRequest(aSubject, aTopic, aData) {
let constraints = aSubject.getConstraints();
let secure = aSubject.isSecure;
let contentWindow = Services.wm.getOuterWindowWithId(aSubject.windowID);
contentWindow.navigator.mozGetUserMediaDevices(
constraints,
function (devices) {
prompt(contentWindow, aSubject.callID, constraints.audio,
constraints.video || constraints.picture, devices, secure);
},
function (error) {
// bug 827146 -- In the future, the UI should catch NO_DEVICES_FOUND
// and allow the user to plug in a device, instead of immediately failing.
denyRequest(aSubject.callID, error);
},
aSubject.innerWindowID);
}
function denyRequest(aCallID, aError) {
let msg = null;
if (aError) {
msg = Cc["@mozilla.org/supports-string;1"].createInstance(Ci.nsISupportsString);
msg.data = aError;
}
Services.obs.notifyObservers(msg, "getUserMedia:response:deny", aCallID);
}
function prompt(aContentWindow, aCallID, aAudioRequested, aVideoRequested, aDevices, aSecure) {
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 {
denyRequest(aCallID, "NO_DEVICES_FOUND");
return;
}
let uri = aContentWindow.document.documentURIObject;
let browser = getBrowserForWindow(aContentWindow);
let chromeDoc = browser.ownerDocument;
let chromeWin = chromeDoc.defaultView;
let stringBundle = chromeWin.gNavigatorBundle;
#ifdef MOZ_LOOP
let host;
// For Loop protocols that start with about:, use brandShortName instead of the host for now.
// Bug 990678 will implement improvements/replacements for the permissions dialog, so this
// should become unnecessary.
if (uri.spec.startsWith("about:loop")) {
let brandBundle = Services.strings.createBundle("chrome://branding/locale/brand.properties");
host = brandBundle.GetStringFromName("brandShortName");
}
else {
// uri.host throws for about: protocols, so we have to do this once we know
// it isn't about:loop.
host = uri.host;
}
let message = stringBundle.getFormattedString("getUserMedia.share" + requestType + ".message",
[ host ]);
#else
let message = stringBundle.getFormattedString("getUserMedia.share" + requestType + ".message",
[ uri.host ]);
#endif
let mainAction = {
label: PluralForm.get(requestType == "CameraAndMicrophone" ? 2 : 1,
stringBundle.getString("getUserMedia.shareSelectedDevices.label")),
accessKey: stringBundle.getString("getUserMedia.shareSelectedDevices.accesskey"),
// The real callback will be set during the "showing" event. The
// empty function here is so that PopupNotifications.show doesn't
// reject the action.
callback: function() {}
};
let secondaryActions = [
{
label: stringBundle.getString("getUserMedia.denyRequest.label"),
accessKey: stringBundle.getString("getUserMedia.denyRequest.accesskey"),
callback: function () {
denyRequest(aCallID);
}
},
{
label: stringBundle.getString("getUserMedia.never.label"),
accessKey: stringBundle.getString("getUserMedia.never.accesskey"),
callback: function () {
denyRequest(aCallID);
// Let someone save "Never" for http sites so that they can be stopped from
// bothering you with doorhangers.
let perms = Services.perms;
if (audioDevices.length)
perms.add(uri, "microphone", perms.DENY_ACTION);
if (videoDevices.length)
perms.add(uri, "camera", perms.DENY_ACTION);
}
}
];
if (aSecure) {
// Don't show the 'Always' action if the connection isn't secure.
secondaryActions.unshift({
label: stringBundle.getString("getUserMedia.always.label"),
accessKey: stringBundle.getString("getUserMedia.always.accesskey"),
callback: function () {
mainAction.callback(true);
}
});
}
let options = {
eventCallback: function(aTopic, aNewBrowser) {
if (aTopic == "swapping")
return true;
let chromeDoc = this.browser.ownerDocument;
if (aTopic == "shown") {
let PopupNotifications = chromeDoc.defaultView.PopupNotifications;
let popupId = requestType == "Microphone" ? "Microphone" : "Devices";
PopupNotifications.panel.firstChild.setAttribute("popupid", "webRTC-share" + popupId);
}
if (aTopic != "showing")
return false;
// DENY_ACTION is handled immediately by MediaManager, but handling
// of ALLOW_ACTION is delayed until the popupshowing event
// to avoid granting permissions automatically to background tabs.
if (aSecure) {
let perms = Services.perms;
let micPerm = perms.testExactPermission(uri, "microphone");
if (micPerm == perms.PROMPT_ACTION)
micPerm = perms.UNKNOWN_ACTION;
let camPerm = perms.testExactPermission(uri, "camera");
if (camPerm == perms.PROMPT_ACTION)
camPerm = perms.UNKNOWN_ACTION;
// We don't check that permissions are set to ALLOW_ACTION in this
// test; only that they are set. This is because if audio is allowed
// and video is denied persistently, we don't want to show the prompt,
// and will grant audio access immediately.
if ((!audioDevices.length || micPerm) && (!videoDevices.length || camPerm)) {
// All permissions we were about to request are already persistently set.
let allowedDevices = Cc["@mozilla.org/supports-array;1"]
.createInstance(Ci.nsISupportsArray);
if (videoDevices.length && camPerm == perms.ALLOW_ACTION)
allowedDevices.AppendElement(videoDevices[0]);
if (audioDevices.length && micPerm == perms.ALLOW_ACTION)
allowedDevices.AppendElement(audioDevices[0]);
Services.obs.notifyObservers(allowedDevices, "getUserMedia:response:allow", aCallID);
this.remove();
return true;
}
}
function listDevices(menupopup, devices) {
while (menupopup.lastChild)
menupopup.removeChild(menupopup.lastChild);
let deviceIndex = 0;
for (let device of devices) {
addDeviceToList(menupopup, device.name, deviceIndex);
deviceIndex++;
}
}
function addDeviceToList(menupopup, deviceName, deviceIndex) {
let menuitem = chromeDoc.createElement("menuitem");
menuitem.setAttribute("value", deviceIndex);
menuitem.setAttribute("label", deviceName);
menuitem.setAttribute("tooltiptext", deviceName);
menupopup.appendChild(menuitem);
}
chromeDoc.getElementById("webRTC-selectCamera").hidden = !videoDevices.length;
chromeDoc.getElementById("webRTC-selectMicrophone").hidden = !audioDevices.length;
let camMenupopup = chromeDoc.getElementById("webRTC-selectCamera-menupopup");
let micMenupopup = chromeDoc.getElementById("webRTC-selectMicrophone-menupopup");
listDevices(camMenupopup, videoDevices);
listDevices(micMenupopup, audioDevices);
if (requestType == "CameraAndMicrophone") {
let stringBundle = chromeDoc.defaultView.gNavigatorBundle;
addDeviceToList(camMenupopup, stringBundle.getString("getUserMedia.noVideo.label"), "-1");
addDeviceToList(micMenupopup, stringBundle.getString("getUserMedia.noAudio.label"), "-1");
}
this.mainAction.callback = function(aRemember) {
let allowedDevices = Cc["@mozilla.org/supports-array;1"]
.createInstance(Ci.nsISupportsArray);
let perms = Services.perms;
if (videoDevices.length) {
let videoDeviceIndex = chromeDoc.getElementById("webRTC-selectCamera-menulist").value;
let allowCamera = videoDeviceIndex != "-1";
if (allowCamera)
allowedDevices.AppendElement(videoDevices[videoDeviceIndex]);
if (aRemember) {
perms.add(uri, "camera",
allowCamera ? perms.ALLOW_ACTION : perms.DENY_ACTION);
}
}
if (audioDevices.length) {
let audioDeviceIndex = chromeDoc.getElementById("webRTC-selectMicrophone-menulist").value;
let allowMic = audioDeviceIndex != "-1";
if (allowMic)
allowedDevices.AppendElement(audioDevices[audioDeviceIndex]);
if (aRemember) {
perms.add(uri, "microphone",
allowMic ? perms.ALLOW_ACTION : perms.DENY_ACTION);
}
}
if (allowedDevices.Count() == 0) {
denyRequest(aCallID);
return;
}
Services.obs.notifyObservers(allowedDevices, "getUserMedia:response:allow", aCallID);
};
return false;
}
};
let anchorId = requestType == "Microphone" ? "webRTC-shareMicrophone-notification-icon"
: "webRTC-shareDevices-notification-icon";
chromeWin.PopupNotifications.show(browser, "webRTC-shareDevices", message,
anchorId, mainAction, secondaryActions, options);
}
function updateIndicators() {
webrtcUI.showGlobalIndicator =
MediaManagerService.activeMediaCaptureWindows.Count() > 0;
let e = Services.wm.getEnumerator("navigator:browser");
while (e.hasMoreElements())
e.getNext().WebrtcIndicator.updateButton();
for (let {browser: browser} of webrtcUI.activeStreams)
showBrowserSpecificIndicator(browser);
}
function showBrowserSpecificIndicator(aBrowser) {
let hasVideo = {};
let hasAudio = {};
MediaManagerService.mediaCaptureWindowState(aBrowser.contentWindow,
hasVideo, hasAudio);
let captureState;
if (hasVideo.value && hasAudio.value) {
captureState = "CameraAndMicrophone";
} else if (hasVideo.value) {
captureState = "Camera";
} else if (hasAudio.value) {
captureState = "Microphone";
} else {
Cu.reportError("showBrowserSpecificIndicator: got neither video nor audio access");
return;
}
let chromeWin = aBrowser.ownerDocument.defaultView;
let stringBundle = chromeWin.gNavigatorBundle;
let message = stringBundle.getString("getUserMedia.sharing" + captureState + ".message2");
let uri = aBrowser.contentWindow.document.documentURIObject;
let windowId = aBrowser.contentWindow
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils)
.currentInnerWindowID;
let mainAction = {
label: stringBundle.getString("getUserMedia.continueSharing.label"),
accessKey: stringBundle.getString("getUserMedia.continueSharing.accesskey"),
callback: function () {},
dismiss: true
};
let secondaryActions = [{
label: stringBundle.getString("getUserMedia.stopSharing.label"),
accessKey: stringBundle.getString("getUserMedia.stopSharing.accesskey"),
callback: function () {
let perms = Services.perms;
if (hasVideo.value &&
perms.testExactPermission(uri, "camera") == perms.ALLOW_ACTION)
perms.remove(uri.host, "camera");
if (hasAudio.value &&
perms.testExactPermission(uri, "microphone") == perms.ALLOW_ACTION)
perms.remove(uri.host, "microphone");
Services.obs.notifyObservers(null, "getUserMedia:revoke", windowId);
}
}];
let options = {
hideNotNow: true,
dismissed: true,
eventCallback: function(aTopic) {
if (aTopic == "shown") {
let PopupNotifications = this.browser.ownerDocument.defaultView.PopupNotifications;
let popupId = captureState == "Microphone" ? "Microphone" : "Devices";
PopupNotifications.panel.firstChild.setAttribute("popupid", "webRTC-sharing" + popupId);
}
return aTopic == "swapping";
}
};
let anchorId = captureState == "Microphone" ? "webRTC-sharingMicrophone-notification-icon"
: "webRTC-sharingDevices-notification-icon";
chromeWin.PopupNotifications.show(aBrowser, "webRTC-sharingDevices", message,
anchorId, mainAction, secondaryActions, options);
}
function removeBrowserSpecificIndicator(aSubject, aTopic, aData) {
let browser = getBrowserForWindowId(aData);
let PopupNotifications = browser.ownerDocument.defaultView.PopupNotifications;
let notification = PopupNotifications &&
PopupNotifications.getNotification("webRTC-sharingDevices",
browser);
if (notification)
PopupNotifications.remove(notification);
}