gecko/browser/base/content/browser-loop.js

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// 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/.
// the "exported" symbols
var LoopUI;
(function() {
const kNSXUL = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
const kBrowserSharingNotificationId = "loop-sharing-notification";
const kPrefBrowserSharingInfoBar = "browserSharing.showInfoBar";
LoopUI = {
/**
* @var {XULWidgetSingleWrapper} toolbarButton Getter for the Loop toolbarbutton
* instance for this window.
*/
get toolbarButton() {
delete this.toolbarButton;
return this.toolbarButton = CustomizableUI.getWidget("loop-button").forWindow(window);
},
/**
* @var {XULElement} panel Getter for the Loop panel element.
*/
get panel() {
delete this.panel;
return this.panel = document.getElementById("loop-notification-panel");
},
/**
* @var {XULElement|null} browser Getter for the Loop panel browser element.
* Will be NULL if the panel hasn't loaded yet.
*/
get browser() {
let browser = document.querySelector("#loop-notification-panel > #loop-panel-iframe");
if (browser) {
delete this.browser;
this.browser = browser;
}
return browser;
},
/**
* @var {String|null} selectedTab Getter for the name of the currently selected
* tab inside the Loop panel. Will be NULL if
* the panel hasn't loaded yet.
*/
get selectedTab() {
if (!this.browser) {
return null;
}
let selectedTab = this.browser.contentDocument.querySelector(".tab-view > .selected");
return selectedTab && selectedTab.getAttribute("data-tab-name");
},
/**
* @return {Promise}
*/
promiseDocumentVisible(aDocument) {
if (!aDocument.hidden) {
return Promise.resolve();
}
return new Promise((resolve) => {
aDocument.addEventListener("visibilitychange", function onVisibilityChanged() {
aDocument.removeEventListener("visibilitychange", onVisibilityChanged);
resolve();
});
});
},
/**
* Toggle between opening or hiding the Loop panel.
*
* @param {DOMEvent} [event] Optional event that triggered the call to this
* function.
* @param {String} [tabId] Optional name of the tab to select after the panel
* has opened. Does nothing when the panel is hidden.
* @return {Promise}
*/
togglePanel: function(event, tabId = null) {
if (this.panel.state == "open") {
return new Promise(resolve => {
this.panel.hidePopup();
resolve();
});
}
return this.openCallPanel(event, tabId);
},
/**
* Opens the panel for Loop and sizes it appropriately.
*
* @param {event} event The event opening the panel, used to anchor
* the panel to the button which triggers it.
* @param {String} [tabId] Identifier of the tab to select when the panel is
* opened. Example: 'rooms', 'contacts', etc.
* @return {Promise}
*/
openCallPanel: function(event, tabId = null) {
return new Promise((resolve) => {
let callback = iframe => {
// Helper function to show a specific tab view in the panel.
function showTab() {
if (!tabId) {
resolve(LoopUI.promiseDocumentVisible(iframe.contentDocument));
return;
}
let win = iframe.contentWindow;
let ev = new win.CustomEvent("UIAction", Cu.cloneInto({
detail: {
action: "selectTab",
tab: tabId
}
}, win));
win.dispatchEvent(ev);
resolve(LoopUI.promiseDocumentVisible(iframe.contentDocument));
}
// If the panel has been opened and initialized before, we can skip waiting
// for the content to load - because it's already there.
if (("contentWindow" in iframe) && iframe.contentWindow.document.readyState == "complete") {
showTab();
return;
}
let documentDOMLoaded = () => {
iframe.removeEventListener("DOMContentLoaded", documentDOMLoaded, true);
this.injectLoopAPI(iframe.contentWindow);
iframe.contentWindow.addEventListener("loopPanelInitialized", function loopPanelInitialized() {
iframe.contentWindow.removeEventListener("loopPanelInitialized",
loopPanelInitialized);
showTab();
});
};
iframe.addEventListener("DOMContentLoaded", documentDOMLoaded, true);
};
// Used to clear the temporary "login" state from the button.
Services.obs.notifyObservers(null, "loop-status-changed", null);
this.shouldResumeTour().then((resume) => {
if (resume) {
// Assume the conversation with the visitor wasn't open since we would
// have resumed the tour as soon as the visitor joined if it was (and
// the pref would have been set to false already.
this.MozLoopService.resumeTour("waiting");
resolve();
return;
}
this.PanelFrame.showPopup(window, event ? event.target : this.toolbarButton.node,
"loop", null, "about:looppanel",
// Loop wants a fixed size for the panel. This also stops it dynamically resizing.
{ width: 330, height: 410 },
callback);
});
});
},
/**
* Method to know whether actions to open the panel should instead resume the tour.
*
* We need the panel to be opened via UITour so that it gets @noautohide.
*
* @return {Promise} resolving with a {Boolean} of whether the tour should be resumed instead of
* opening the panel.
*/
shouldResumeTour: Task.async(function* () {
// Resume the FTU tour if this is the first time a room was joined by
// someone else since the tour.
if (!Services.prefs.getBoolPref("loop.gettingStarted.resumeOnFirstJoin")) {
return false;
}
if (!this.LoopRooms.participantsCount) {
// Nobody is in the rooms
return false;
}
let roomsWithNonOwners = yield this.roomsWithNonOwners();
if (!roomsWithNonOwners.length) {
// We were the only one in a room but we want to know about someone else joining.
return false;
}
return true;
}),
/**
* @return {Promise} resolved with an array of Rooms with participants (excluding owners)
*/
roomsWithNonOwners: function() {
return new Promise(resolve => {
this.LoopRooms.getAll((error, rooms) => {
let roomsWithNonOwners = [];
for (let room of rooms) {
if (!("participants" in room)) {
continue;
}
let numNonOwners = room.participants.filter(participant => !participant.owner).length;
if (!numNonOwners) {
continue;
}
roomsWithNonOwners.push(room);
}
resolve(roomsWithNonOwners);
});
});
},
/**
* Triggers the initialization of the loop service. Called by
* delayedStartup.
*/
init: function() {
// Add observer notifications before the service is initialized
Services.obs.addObserver(this, "loop-status-changed", false);
// This is a promise for test purposes, but we don't want to be logging
// expected errors to the console, so we catch them here.
this.MozLoopService.initialize().catch(ex => {
if (!ex.message ||
(!ex.message.contains("not enabled") &&
!ex.message.contains("not needed"))) {
console.error(ex);
}
});
this.updateToolbarState();
},
uninit: function() {
Services.obs.removeObserver(this, "loop-status-changed");
},
// Implements nsIObserver
observe: function(subject, topic, data) {
if (topic != "loop-status-changed") {
return;
}
this.updateToolbarState(data);
},
/**
* Updates the toolbar/menu-button state to reflect Loop status.
*
* @param {string} [aReason] Some states are only shown if
* a related reason is provided.
*
* aReason="login": Used after a login is completed
* successfully. This is used so the state can be
* temporarily shown until the next state change.
*/
updateToolbarState: function(aReason = null) {
if (!this.toolbarButton.node) {
return;
}
let state = "";
if (this.MozLoopService.errors.size) {
state = "error";
} else if (this.MozLoopService.screenShareActive) {
state = "action";
} else if (aReason == "login" && this.MozLoopService.userProfile) {
state = "active";
} else if (this.MozLoopService.doNotDisturb) {
state = "disabled";
} else if (this.MozLoopService.roomsParticipantsCount > 0) {
state = "active";
}
this.toolbarButton.node.setAttribute("state", state);
},
/**
* Show a desktop notification when 'do not disturb' isn't enabled.
*
* @param {Object} options Set of options that may tweak the appearance and
* behavior of the notification.
* Option params:
* - {String} title Notification title message
* - {String} [message] Notification body text
* - {String} [icon] Notification icon
* - {String} [sound] Sound to play
* - {String} [selectTab] Tab to select when the panel
* opens
* - {Function} [onclick] Callback to invoke when
* the notification is clicked.
* Opens the panel by default.
*/
showNotification: function(options) {
if (this.MozLoopService.doNotDisturb) {
return;
}
if (!options.title) {
throw new Error("Missing title, can not display notification");
}
let notificationOptions = {
body: options.message || ""
};
if (options.icon) {
notificationOptions.icon = options.icon;
}
if (options.sound) {
// This will not do anything, until bug bug 1105222 is resolved.
notificationOptions.mozbehavior = {
soundFile: ""
};
this.playSound(options.sound);
}
let notification = new window.Notification(options.title, notificationOptions);
notification.addEventListener("click", e => {
if (window.closed) {
return;
}
try {
window.focus();
} catch (ex) {}
// We need a setTimeout here, otherwise the panel won't show after the
// window received focus.
window.setTimeout(() => {
if (typeof options.onclick == "function") {
options.onclick();
} else {
// Open the Loop panel as a default action.
this.openCallPanel(null, options.selectTab || null);
}
}, 0);
});
},
/**
* Play a sound in this window IF there's no sound playing yet.
*
* @param {String} name Name of the sound, like 'ringtone' or 'room-joined'
*/
playSound: function(name) {
if (this.ActiveSound || this.MozLoopService.doNotDisturb) {
return;
}
this.activeSound = new window.Audio();
this.activeSound.src = `chrome://browser/content/loop/shared/sounds/${name}.ogg`;
this.activeSound.load();
this.activeSound.play();
this.activeSound.addEventListener("ended", () => this.activeSound = undefined, false);
},
/**
* Adds a listener for browser sharing. It will inform the listener straight
* away for the current windowId, and then on every tab change.
*
* Listener parameters:
* - {Object} err If there is a error this will be defined, null otherwise.
* - {Integer} windowId The new windowId for the browser.
*
* @param {Function} listener The listener to receive information on when the
* windowId changes.
*/
addBrowserSharingListener: function(listener) {
if (!this._tabChangeListeners) {
this._tabChangeListeners = new Set();
gBrowser.tabContainer.addEventListener("TabSelect", this);
}
this._tabChangeListeners.add(listener);
this._maybeShowBrowserSharingInfoBar();
// Get the first window Id for the listener.
listener(null, gBrowser.selectedBrowser.outerWindowID);
},
/**
* Removes a listener from browser sharing.
*
* @param {Function} listener The listener to remove from the list.
*/
removeBrowserSharingListener: function(listener) {
if (!this._tabChangeListeners) {
return;
}
if (this._tabChangeListeners.has(listener)) {
this._tabChangeListeners.delete(listener);
}
if (!this._tabChangeListeners.size) {
this._hideBrowserSharingInfoBar();
gBrowser.tabContainer.removeEventListener("TabSelect", this);
delete this._tabChangeListeners;
}
},
/**
* Helper function to fetch a localized string via the MozLoopService API.
* It's currently inconveniently wrapped inside a string of stringified JSON.
*
* @param {String} key The element id to get strings for.
* @return {String}
*/
_getString: function(key) {
let str = this.MozLoopService.getStrings(key);
if (str) {
str = JSON.parse(str).textContent;
}
return str;
},
/**
* Shows an infobar notification at the top of the browser window that warns
* the user that their browser tabs are being broadcasted through the current
* conversation.
*/
_maybeShowBrowserSharingInfoBar: function() {
this._hideBrowserSharingInfoBar();
// Don't show the infobar if it's been permanently disabled from the menu.
if (!this.MozLoopService.getLoopPref(kPrefBrowserSharingInfoBar)) {
return;
}
// Create the menu that is shown when the menu-button' dropmarker is clicked
// inside the notification bar.
let menuPopup = document.createElementNS(kNSXUL, "menupopup");
let menuItem = menuPopup.appendChild(document.createElementNS(kNSXUL, "menuitem"));
menuItem.setAttribute("label", this._getString("infobar_menuitem_dontshowagain_label"));
menuItem.setAttribute("accesskey", this._getString("infobar_menuitem_dontshowagain_accesskey"));
menuItem.addEventListener("command", () => {
// We're being told to hide the bar permanently.
this._hideBrowserSharingInfoBar(true);
});
let box = gBrowser.getNotificationBox();
let bar = box.appendNotification(
this._getString("infobar_screenshare_browser_message"),
kBrowserSharingNotificationId,
// Icon is defined in browser theme CSS.
null,
box.PRIORITY_WARNING_LOW,
[{
label: this._getString("infobar_button_gotit_label"),
accessKey: this._getString("infobar_button_gotit_accesskey"),
type: "menu-button",
popup: menuPopup,
anchor: "dropmarker",
callback: () => {
this._hideBrowserSharingInfoBar();
}
}]
);
// Keep showing the notification bar until the user explicitly closes it.
bar.persistence = -1;
},
/**
* Hides the infobar, permanantly if requested.
*
* @param {Boolean} permanently Flag that determines if the infobar will never
* been shown again. Defaults to `false`.
* @return {Boolean} |true| if the infobar was hidden here.
*/
_hideBrowserSharingInfoBar: function(permanently = false, browser) {
browser = browser || gBrowser.selectedBrowser;
let box = gBrowser.getNotificationBox(browser);
let notification = box.getNotificationWithValue(kBrowserSharingNotificationId);
let removed = false;
if (notification) {
box.removeNotification(notification);
removed = true;
}
if (permanently) {
this.MozLoopService.setLoopPref(kPrefBrowserSharingInfoBar, false);
}
return removed;
},
/**
* Handles events from gBrowser.
*/
handleEvent: function(event) {
// We only should get "select" events.
if (event.type != "TabSelect") {
return;
}
let wasVisible = false;
// Hide the infobar from the previous tab.
if (event.detail.previousTab) {
wasVisible = this._hideBrowserSharingInfoBar(false, event.detail.previousTab.linkedBrowser);
}
// We've changed the tab, so get the new window id.
for (let listener of this._tabChangeListeners) {
try {
listener(null, gBrowser.selectedBrowser.outerWindowID);
} catch (ex) {
Cu.reportError("Tab switch caused an error: " + ex.message);
}
};
if (wasVisible) {
// If the infobar was visible before, we should show it again after the
// switch.
this._maybeShowBrowserSharingInfoBar();
}
},
/**
* Fetch the favicon of the currently selected tab in the format of a data-uri.
*
* @param {Function} callback Function to be invoked with an error object as
* its first argument when an error occurred or
* a string as second argument when the favicon
* has been fetched.
*/
getFavicon: function(callback) {
let pageURI = gBrowser.selectedTab.linkedBrowser.currentURI.spec;
// If the tab pages url starts with http(s), fetch icon.
if (!/^https?:/.test(pageURI)) {
callback();
return;
}
this.PlacesUtils.promiseFaviconLinkUrl(pageURI).then(uri => {
uri = this.PlacesUtils.getImageURLForResolution(window, uri.spec);
// We XHR the favicon to get a File object, which we can pass to the FileReader
// object. The FileReader turns the File object into a data-uri.
let xhr = new XMLHttpRequest();
xhr.open("get", uri, true);
xhr.responseType = "blob";
xhr.overrideMimeType("image/x-icon");
xhr.onload = () => {
if (xhr.status != 200) {
callback(new Error("Invalid status code received for favicon XHR: " + xhr.status));
return;
}
let reader = new FileReader();
reader.onload = reader.onload = () => callback(null, reader.result);
reader.onerror = callback;
reader.readAsDataURL(xhr.response);
};
xhr.onerror = callback;
xhr.send();
}).catch(err => {
callback(err || new Error("No favicon found"));
});
}
};
})();
XPCOMUtils.defineLazyModuleGetter(LoopUI, "injectLoopAPI", "resource:///modules/loop/MozLoopAPI.jsm");
XPCOMUtils.defineLazyModuleGetter(LoopUI, "LoopRooms", "resource:///modules/loop/LoopRooms.jsm");
XPCOMUtils.defineLazyModuleGetter(LoopUI, "MozLoopService", "resource:///modules/loop/MozLoopService.jsm");
XPCOMUtils.defineLazyModuleGetter(LoopUI, "PanelFrame", "resource:///modules/PanelFrame.jsm");
XPCOMUtils.defineLazyModuleGetter(LoopUI, "PlacesUtils", "resource://gre/modules/PlacesUtils.jsm");