Publish Vulpes Preview 15 sources for desktop, Android and Tundra
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
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469
gaia/shared/js/smart-screen/applications.js
Executable file
469
gaia/shared/js/smart-screen/applications.js
Executable file
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'use strict';
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/* global evt, ManifestHelper */
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(function(exports) {
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/**
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* Application Entry Point
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*
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* This object stands for an entry point of the app. There can be more than
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* one entry point in one app. Each entry point can own its name and icon, and
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* can be launched singly.
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*
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* @property {String} manifestURL The app's manifestURL.
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* @property {String} entryPoint The entry point defined in app's manifest.
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* @property {String} name The name of the entry.
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* @typedef {Object} AppEntryPoint
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*/
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/**
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* Applications is a helper for mozApps.mgmt. It is responsible for:
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*
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* - get all installed apps
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* - get app icon blob
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* - listen to app install/update/uninstall events and publish them
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* - launch app
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*
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* @namespace Applications
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* @requires ManifestHelper
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*/
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var Applications = evt({
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/**
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* App roles which we don't need to handle and monitor.
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*
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* @constant
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* @type {Array}
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* @memberof Applications
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*/
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HIDDEN_ROLES: [
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'system', 'homescreen', 'input', 'deck', 'addon', 'langpack', 'widget'
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],
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/**
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* Default icon url.
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*
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* @constant
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* @type {String}
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* @memberof Applications
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*/
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DEFAULT_ICON_URL: '/style/images/default.png',
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/**
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* Installed apps indexed by their "manifestURL".
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*
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* @readonly
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* @type {Object}
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* @memberof Applications
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*/
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installedApps: {},
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_ready: false,
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_readyCallbacks: [],
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_isHiddenApp: function appIsHiddenApp(role) {
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if (!role) {
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return false;
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}
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return (this.HIDDEN_ROLES.indexOf(role) !== -1);
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},
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_loadIcon: function appLoadIcon(request) {
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if (!request.url) {
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if (request.onerror) {
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request.onerror();
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}
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return;
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}
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var xhr = new XMLHttpRequest({
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mozAnon: true,
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mozSystem: true
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});
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var icon = request.url;
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xhr.open('GET', icon, true);
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xhr.responseType = 'blob';
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xhr.onload = function onload(evt) {
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var status = xhr.status;
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if (status !== 0 && status !== 200) {
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if (request.onerror) {
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request.onerror();
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}
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return;
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}
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if (request.onsuccess) {
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request.onsuccess(xhr.response);
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}
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};
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xhr.ontimeout = xhr.onerror = function onerror(evt) {
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if (request.onerror) {
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request.onerror();
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}
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};
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try {
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xhr.send(null);
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} catch (evt) {
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if (request.onerror) {
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request.onerror();
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}
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}
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},
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_bestMatchingIcon:
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function appBestMatchingIcon(app, manifest, preferredSize) {
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preferredSize = preferredSize || Number.MAX_VALUE;
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var max = 0;
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var closestSize = 0;
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for (var size in manifest.icons) {
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size = parseInt(size, 10);
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if (size > max) {
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max = size;
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}
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if (!closestSize && size >= preferredSize) {
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closestSize = size;
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}
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}
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if (! closestSize) {
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closestSize = max;
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}
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var url = manifest.icons[closestSize];
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if (!url) {
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return;
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}
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if (url.indexOf('data:') === 0 ||
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url.indexOf('app://') === 0 ||
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url.indexOf('http://') === 0 ||
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url.indexOf('https://') === 0) {
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return url;
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}
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if (url.charAt(0) != '/') {
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console.warn('`' + manifest.name + '` app icon is invalid. ' +
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'Manifest `icons` attribute should contain URLs -or- ' +
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'absolute paths from the origin field.');
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return '';
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}
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if (app.origin.slice(-1) === '/') {
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return app.origin.slice(0, -1) + url;
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}
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return app.origin + url;
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},
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/**
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* An easy way to register callback functions for "ready" event.
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*
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* Use this method to initialize your code if it depends on Applications. It
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* will be triggered immediately if Applications is already ready.
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*
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* @param {Function} callback This function will be called when initialized.
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* @memberof Applications
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*/
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ready: function appReady(callback) {
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if (this._ready) {
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window.setTimeout(callback);
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} else {
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this._readyCallbacks.push(callback);
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}
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},
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onAppInstall: function onAppInstall(evt) {
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var app = evt.application;
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var manifest = app.manifest || app.updateManifest;
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if (!app.launch || !manifest || !manifest.icons ||
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this._isHiddenApp(manifest.role)) {
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return;
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}
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var message =
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this.installedApps[app.manifestURL] ? 'update' : 'install';
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this.installedApps[app.manifestURL] = app;
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this.fire(message, this.getAppEntries(app.manifestURL));
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},
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onAppUninstall: function onAppUninstall(evt) {
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var app = evt.application;
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if (this.installedApps[app.manifestURL]) {
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this.fire('uninstall', this.getAppEntries(app.manifestURL));
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delete this.installedApps[app.manifestURL];
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}
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},
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/**
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* Initialize Applications.
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*
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* The callback functions registered by "ready" method will be triggered
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* after it's done.
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*
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* @param {Function} callback This function will be called when "init" is
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* done.
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* @memberof Applications
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*/
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init: function appInit(callback) {
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var appMgmt = navigator.mozApps.mgmt;
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var self = this;
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appMgmt.getAll().onsuccess = function onsuccess(event) {
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event.target.result.forEach(function eachApp(app) {
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var manifest = app.manifest;
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if (!app.launch || !manifest || !manifest.icons ||
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self._isHiddenApp(manifest.role)) {
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return;
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}
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self.installedApps[app.manifestURL] = app;
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});
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self._ready = true;
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if (callback) {
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callback();
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}
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while (self._readyCallbacks.length) {
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setTimeout(self._readyCallbacks.shift());
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}
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};
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appMgmt.addEventListener('install', this);
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appMgmt.addEventListener('uninstall', this);
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},
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/**
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* Release all resources.
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*
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* @memberof Applications
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*/
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uninit: function appUninit() {
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var appMgmt = navigator.mozApps.mgmt;
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appMgmt.oninstall = null;
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appMgmt.onuninstall = null;
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this.installedApps = {};
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this._ready = false;
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this._readyCallbacks = [];
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},
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/* jshint -W004 */
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// XXX: Uses this to prevent 'helper' is already defined jshint error
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/**
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* Get all "entry_point"s from the specified app.
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*
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* @param {String} manifestURL The app's manifestURL.
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* @return {Array} An array contains all {@link AppEntryPoint} of the
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* specified app.
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* @memberof Applications
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*/
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getAppEntries: function appGetAppEntries(manifestURL) {
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if (!manifestURL || !this.installedApps[manifestURL]) {
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return [];
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}
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var manifest = this.installedApps[manifestURL].manifest ||
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this.installedApps[manifestURL].updateManifest;
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var entryPoints = manifest.entry_points;
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var entries = [];
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var removable = this.installedApps[manifestURL].removable;
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if (!entryPoints || manifest.type !== 'certified') {
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var helper = new ManifestHelper(manifest);
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entries.push({
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manifestURL: manifestURL,
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entryPoint: '',
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name: helper.name,
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removable: removable
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});
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} else {
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for (var entryPoint in entryPoints) {
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if (entryPoints[entryPoint].icons) {
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var helper = new ManifestHelper(entryPoints[entryPoint]);
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entries.push({
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manifestURL: manifestURL,
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entryPoint: entryPoint,
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name: helper.name,
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removable: removable
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});
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}
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}
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}
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return entries;
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},
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/* jshint +W004 */
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/**
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* Get all "entry_point"s from all installed apps.
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*
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* @return {Array} An array contains all {@link AppEntryPoint} of the
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* installed apps.
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* @memberof Applications
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*/
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getAllAppEntries: function appGetAllAppEntries() {
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if (!this._ready) {
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return null;
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}
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var entries = [];
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for (var manifestURL in this.installedApps) {
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entries.push.apply(entries, this.getAppEntries(manifestURL));
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}
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return entries;
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},
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/**
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* Launch an app by its manifestURL and entryPoint.
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*
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* @param {String} manifestURL The app's manifestURL.
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* @param {String} [entryPoint] The specific "entry_point" you want to
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* launch. Default launch path will be involved
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* if it's omitted.
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* @return {Boolean} true if succeed.
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* @memberof Applications
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*/
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launch: function appLaunch(manifestURL, entryPoint) {
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var installedApps = this.installedApps;
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if (!manifestURL || !installedApps[manifestURL] ||
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!installedApps[manifestURL].launch) {
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return false;
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}
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entryPoint = entryPoint || '';
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installedApps[manifestURL].launch(entryPoint);
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return true;
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},
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/**
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* Get manifest object by specified manifestURL and entryPoint.
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*
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* @param {String} manifestURL The app's manifestURL.
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* @param {String} [entryPoint] Specify an "entry_point" if you want to get
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* its part only. Otherwise, the whole manifest
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* object will be returned.
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* @return {Object} A manifest object or "null" if the app doesn't exist.
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* @memberof Applications
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*/
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getEntryManifest: function appGetEntryManifest(manifestURL, entryPoint) {
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if (!manifestURL || !this.installedApps[manifestURL]) {
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return null;
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}
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var manifest = this.installedApps[manifestURL].manifest ||
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this.installedApps[manifestURL].updateManifest;
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if (entryPoint) {
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var entry_manifest = manifest.entry_points[entryPoint];
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return entry_manifest || null;
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}
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return manifest;
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},
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/**
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* Get app/entry's name.
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*
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* @param {String} manifestURL An app's manifestURL.
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* @param {String} [entryPoint] Specify an "entry_point" if you want to get
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* its part only. Otherwise, the default name
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* will be returned.
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* @return {String} The app/entry's name or empty string if the app doesn't
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* exist.
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* @memberof Applications
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*/
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getName: function appGetName(manifestURL, entryPoint) {
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var entry_manifest = this.getEntryManifest(manifestURL, entryPoint);
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if (!entry_manifest) {
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return '';
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}
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return new ManifestHelper(entry_manifest).name;
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},
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/**
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* Get blob data of the app/entry's icon.
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*
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* @param {String} manifestURL An app's manifestURL.
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* @param {String} [entryPoint] Specify an "entry_point".
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* @param {Number} [preferredSize=Number.MAX_VALUE]
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* In pixels. This method will choose the smallest icon that its
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* width greater than this value or the biggest one if all the icons'
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* width are smaller than this value.
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* @param {Function} [callback] The callback will contains blob data as the
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* first argument if succeed or "undefined" if
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* something failed.
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* @return {Boolean} true if the process is started or false if no valid
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* icon url can be found or the app doesn't exist.
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* @memberof Applications
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*/
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getIconBlob: function appGetIconBlob(manifestURL, entryPoint, preferredSize,
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callback) {
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var entry_manifest = this.getEntryManifest(manifestURL, entryPoint);
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if (! entry_manifest) {
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return false;
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}
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var url = this._bestMatchingIcon(
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this.installedApps[manifestURL], entry_manifest, preferredSize);
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if (!url) {
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if (callback) {
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setTimeout(callback);
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}
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return true;
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}
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this._loadIcon({
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url: url,
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onsuccess: function(blob) {
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if (callback) {
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callback(blob);
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}
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},
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onerror: function() {
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if (callback) {
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callback();
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}
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}
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});
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return true;
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},
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listAppsByRole: function listAppsByRole(role) {
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var matched = [];
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for (var manifestURL in this.installedApps) {
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var app = this.installedApps[manifestURL];
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if (!role || app.manifest.role === role) {
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matched.push({
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'manifestURL': manifestURL,
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'app': app
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});
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}
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}
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return matched;
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},
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handleEvent: function handleEvent(evt) {
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switch(evt.type) {
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case 'install':
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this.onAppInstall(evt);
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break;
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case 'uninstall':
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this.onAppUninstall(evt);
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break;
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}
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}
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});
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exports.Applications = Applications;
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})(window);
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