/** * This class is used to check if the current device is currently online or not. It has three different implementations: * * - Sencha Packager * - Cordova * - Simulator * * Both the Sencha Packager and Cordova implementations will use the native functionality to determine if the current * device is online. The Simulator version will simply use `navigator.onLine`. * * When this singleton ({@link Ext.device.Connection}) is instantiated, it will automatically decide which version to * use based on the current platform. * * ## Examples * * Determining if the current device is online: * * alert(Ext.device.Connection.isOnline()); * * Checking the type of connection the device has: * * alert('Your connection type is: ' + Ext.device.Connection.getType()); * * The available connection types are: * * - {@link Ext.device.Connection#UNKNOWN UNKNOWN} - Unknown connection * - {@link Ext.device.Connection#ETHERNET ETHERNET} - Ethernet connection * - {@link Ext.device.Connection#WIFI WIFI} - WiFi connection * - {@link Ext.device.Connection#CELL_2G CELL_2G} - Cell 2G connection * - {@link Ext.device.Connection#CELL_3G CELL_3G} - Cell 3G connection * - {@link Ext.device.Connection#CELL_4G CELL_4G} - Cell 4G connection * - {@link Ext.device.Connection#NONE NONE} - No network connection * * @mixins Ext.device.connection.Abstract */Ext.define('Ext.device.Connection', { singleton: true, requires: [ 'Ext.device.Communicator', 'Ext.device.connection.Cordova', 'Ext.device.connection.Simulator' ], /** * @event onlinechange * @inheritdoc Ext.device.connection.Sencha#onlinechange */ constructor: function() { var browserEnv = Ext.browser.is; if (browserEnv.WebView) { if (browserEnv.Cordova) { return Ext.create('Ext.device.connection.Cordova'); } } return Ext.create('Ext.device.connection.Simulator'); }});