b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
79 lines
2.1 KiB
JavaScript
Executable file
79 lines
2.1 KiB
JavaScript
Executable file
'use strict';
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/**
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* @fileoverview Simple tool to notify listeners when a Firefox OS instance
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* finishes booting.
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*/
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var EventEmitter = require('events').EventEmitter;
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/**
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* @constructor
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* @param {Marionette.Client} client Marionette client to use.
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*/
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function BootWatcher(client) {
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EventEmitter.call(this, arguments);
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this._client = client;
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}
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module.exports = BootWatcher;
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/**
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* Initialize the BootWatcher plugin!
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* @param {Marionette.Client} client Marionette client to use.
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* @param {Object} options Optional map of attributes for MarionetteApps.
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* @param {Function} cb Optional callback function to call after setup.
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* @return {BootWatcher} instance of bootwatcher.
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*/
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BootWatcher.setup = function(client, options, cb) {
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var bootwatcher = new BootWatcher(client);
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if (arguments.length === 2 && typeof(options) === 'function') {
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cb = options;
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options = undefined;
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}
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process.nextTick(function() {
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// wait until client is booted up
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try {
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bootwatcher.start();
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} catch (error) {
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console.error('Never saw webapps-registry-ready yes');
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} finally {
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bootwatcher.emit('boot');
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if (cb) {
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cb(null, bootwatcher);
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}
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}
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});
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return bootwatcher;
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};
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BootWatcher.prototype = {
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__proto__: EventEmitter.prototype,
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/**
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* @type {Marionette.Client}
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* @private
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*/
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_client: undefined,
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/**
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* Start watching for when we're booted.
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* Initially we were watching the window for the 'applicationready'
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* event. However, some javascript exceptions in the system app may
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* keep 'applicationready' from being fired, so poll instead. Also,
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* an error may be thrown while we're executing. In that case, retry.
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*/
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start: function() {
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var client = this._client;
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client.waitFor(function() {
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return client.executeScript(function() {
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try {
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var sessionStorage = window.wrappedJSObject.sessionStorage;
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var item = sessionStorage.getItem('webapps-registry-ready');
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return item === 'yes';
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} catch (error) {
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return false;
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}
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});
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}, { timeout: 30000 });
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}
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};
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