b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
72 lines
1.8 KiB
JavaScript
Executable file
72 lines
1.8 KiB
JavaScript
Executable file
/*global Promise */
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(function(exports) {
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'use strict';
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/**
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* Class that is applied to body whenever application is ready for user.
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* @const {string}
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*/
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const APPLICATION_READY_CLASS_NAME = 'js-app-ready';
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/**
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* Unique identifier of the app instance.
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* @type {number}
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*/
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const INSTANCE_ID = Date.now();
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var app = {
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isReady: function app_isReady() {
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return document.body.classList.contains(APPLICATION_READY_CLASS_NAME);
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},
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/**
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* Sets application readiness, can be called only once
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*/
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setReady: function app_setReady() {
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if (this.isReady()) {
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throw new Error('Application should be marked as ready only once!');
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}
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document.body.classList.add(APPLICATION_READY_CLASS_NAME);
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// Tell audio channel manager that we want to adjust the notification
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// channel if the user press the volumeup/volumedown buttons in Messages.
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if (navigator.mozAudioChannelManager) {
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navigator.mozAudioChannelManager.volumeControlChannel = 'notification';
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}
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},
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/**
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* Returns promise that will be resolved once application is ready for
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* interaction.
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* @returns {Promise}
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*/
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whenReady: function whenReady() {
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if (this.isReady()) {
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return Promise.resolve();
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}
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return new Promise(function(resolve, reject) {
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var bodyClassObserver = new MutationObserver(function() {
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try {
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if (this.isReady()) {
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bodyClassObserver.disconnect();
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resolve();
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}
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} catch(e) {
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reject(e);
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}
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}.bind(this));
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bodyClassObserver.observe(document.body, {
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attributes: true,
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attributeFilter: ['class']
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});
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}.bind(this));
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},
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get instanceId() {
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return INSTANCE_ID;
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}
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};
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exports.App = app;
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})(this);
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