| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| /*global module, require*/ |
| |
| var cordova = require('cordova'), |
| Connection = require('./Connection'); |
| |
| var DOCUMENT_EVENTS_CHECK_INTERVAL = 500; // ms |
| // Flag that indicates that ew need to re-fire online/offline events at document level |
| // (Workaround for Chrome, since it fires such events only for window object) |
| var NEED_FIRE_DOCUMENT_EVENT_MANUALLY = false; |
| |
| function NetworkConnection() { |
| this.type = Connection.UNKNOWN; |
| } |
| |
| /** |
| * Get connection info |
| * |
| * @param {Function} successCallback The function to call when the Connection data is available |
| */ |
| NetworkConnection.prototype.getInfo = function(successCallback) { |
| successCallback(this.type); |
| }; |
| |
| Object.defineProperty(NetworkConnection.prototype, 'type', { |
| get: function () { |
| // It is not possible to determine real connection type in browser |
| // so we always report Connection.UNKNOWN when online |
| return (window.navigator.onLine === false ? Connection.NONE : Connection.UNKNOWN); |
| }, |
| configurable: true, |
| enumerable: true |
| }); |
| |
| // This function tries to detect if document online/offline events is being fired |
| // after corresponding window events, and if not, then fires them manually |
| // This is workaround for Chrome, which fires only window online/offline events |
| // and regarding to plugin spec we need these events at document object |
| var eventRedirectHandler = function (e) { |
| // NEED_FIRE_DOCUMENT_EVENT_MANUALLY flag is already set, |
| // just fire corresponding document event and return |
| if (NEED_FIRE_DOCUMENT_EVENT_MANUALLY) { |
| cordova.fireDocumentEvent(e.type); |
| return; |
| } |
| |
| // Flag that indicates whether corresponding document even is fired |
| var documentStateEventFired = false; |
| var setDocumentStateEventFired = function() { |
| documentStateEventFired = true; |
| }; |
| document.addEventListener(e.type, setDocumentStateEventFired); |
| setTimeout(function () { |
| // Remove unnecessary listener |
| document.removeEventListener(e.type, setDocumentStateEventFired); |
| // if document event hasn't been fired in specified interval (500 ms by default), |
| // then we're in chrome and need to fire it manually |
| if (!documentStateEventFired) { |
| NEED_FIRE_DOCUMENT_EVENT_MANUALLY = true; |
| cordova.fireDocumentEvent(e.type); |
| } |
| }, DOCUMENT_EVENTS_CHECK_INTERVAL); |
| }; |
| |
| // Subscribe to native online/offline events |
| window.addEventListener('online', eventRedirectHandler); |
| window.addEventListener('offline', eventRedirectHandler); |
| |
| var me = new NetworkConnection(); |
| |
| require("cordova/exec/proxy").add("NetworkStatus", { getConnectionInfo: me.getConnectionInfo }); |
| |
| module.exports = me; |