/
connection.js
executable file
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/
connection.js
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// initiate appTop var if it hasn't been
window.appTop = typeof window.appTop !== 'undefined' ? window.appTop : {};
appTop.conn = {
debugging: false,
timeout_id: 0,
timeout_length: 800, // milliseconds to pause before prompting
current_mode: '', // online or offline
iframe_exists: false,
scriptsLoaded: [],
cacheSelectors: function() {
appTop.conn.goOffline = document.getElementById('go-offline');
appTop.conn.goOnline = document.getElementById('go-online');
appTop.conn.closeOffline = document.getElementById('close-offline');
appTop.conn.closeOnline = document.getElementById('close-online');
appTop.conn.offlineFooter = document.getElementById('offline-footer');
appTop.conn.onlineFooter = document.getElementById('online-footer');
},
init: function( debug ) {
appTop.conn.cacheSelectors();
if( debug ) {
appTop.conn.debugging = true;
}
// only on index.html
if( appTop.conn.closeOffline ) {
appTop.conn.closeOffline.addEventListener('click', function() { appTop.conn.closeOfflineModal(); });
}
if( appTop.conn.closeOnline ) {
appTop.conn.closeOnline.addEventListener('click', function() { appTop.conn.closeOnlineModal(); });
}
if( appTop.conn.goOffline ) {
appTop.conn.goOffline.addEventListener('click', function() { window.location = 'offline/offline.html'; });
}
if( appTop.conn.goOnline ) {
appTop.conn.goOnline.addEventListener('click', function() { window.location = '../index.html'; });
}
},
/**
*
*/
offlineMode: function(buttonIndex) {
if( buttonIndex == 1 ) {
document.getElementById("online").style.display = "none";
document.getElementById("offline").style.display = "block";
}
},
/**
* Initialize the offline activity
*/
offlineInit: function() {
appp_settings.app_offline_toggle = ( localStorage.app_offline_toggle ) ? true : false;
// load offline.html
appTop.conn.toggleStatus();
},
/**
* Transition from offline to online
*/
onlineMode: function(buttonIndex) {
this.closeOfflineModal();
},
/**
* After confirming app is online, the iframe can then be created.
*
*/
createIframe: function() {
if( navigator.network.connection.type == Connection.NONE &&
! appTop.conn.iframe_exists) {
// wait
}
if( appTop.conn.getCurrentMode() == 'online' && appTop.conn.iframe_exists == false ) {
appTop.conn.iframe_exists = true;
// Random string forces cache to break
var d = new Date();
var n = d.getMilliseconds();
jQuery('<iframe>', {
src: jQuery('#online').data('iframe') + '&appp_bypass=false&' + n,
id: 'myApp',
frameborder: 0,
scrolling: 'no',
allowfullscreen: '',
}).appendTo('#online');
}
// now wait for postMessage (site_loaded) from theme's /js/custom.js
},
/**
* A
*/
addRemoteScripts: function() {
var dev = ( jQuery('#online').data('debug-lib') && jQuery('#online').data('debug-lib') === true ) ? '.dev' : '';
var apppresserjs = remote_resources.appp_pg.src.replace('.js', dev+'.js');
var src = jQuery('#online').data('iframe').split('?')[0] + apppresserjs;
if( typeof appTop.remote === 'undefined' ) {
jQuery('<script>', {
src: src,
id: 'remote-init',
}).appendTo('head');
}
},
/**
* Add js files added to the admin settings 'Cordova Add on' tab
* and append them to the index.html <head>
*/
addCordovaAddonScripts: function() {
var iframewin = document.getElementById('myApp').contentWindow.window;
if( typeof iframewin.appp_remote_addon_js !== 'undefined' && window.location.href.indexOf('index.html') > 0) {
r_src = iframewin.appp_remote_addon_js;
for (var i = 0; i < r_src.length; i++) {
filename = r_src[i].replace(/^.*[\\\/]/, '').replace(/(\?.*)|(#.*)/g, '');
if ( filename in appTop.conn.scriptsLoaded )
continue;
appTop.conn.scriptsLoaded[filename] = r_src[i];
if( appTop.conn.get_remote_script_status( r_src[i] ) == 200 ) {
jQuery('<script>', {
src: r_src[i],
}).appendTo('head');
}
};
}
},
events: {
/**
* Collects only the last offline/online event in a X second timeframe
* before sending it on to toggleStatus()
*/
collect_e: function(e) {
appTop.conn.debug.log("connection event", e);
appTop.conn.debug.log("connection type", navigator.network.connection.type);
if ( !e || !e.type || typeof appTop.conn.timeout_id === "number") {
appTop.conn.debug.log("cancel timeout", appTop.conn.timeout_id);
appTop.conn.events.cancel_timeout();
appTop.conn.timeout_id = window.setTimeout(function() { appTop.conn.toggleStatus(); }, appTop.conn.timeout_length);
} else {
appTop.conn.current_mode = e.type;
appTop.conn.timeout_id = window.setTimeout(function() { appTop.conn.toggleStatus(); }, appTop.conn.timeout_length);
}
},
cancel_timeout: function() {
window.clearTimeout(appTop.conn.timeout_id);
appTop.conn.timeout_id = undefined;
},
},
getCurrentMode: function() {
if( ! appTop.conn.current_mode ) {
appTop.conn.current_mode = ( navigator.network.connection.type == Connection.NONE ) ? 'offline' : 'online';
}
return appTop.conn.current_mode;
},
openOfflineModal: function() {
appTop.conn.cacheSelectors();
if( appp_settings.app_offline_toggle === false ) {
return;
}
if(appp_settings.app_offline_toggle) {
if( appTop.conn.goOffline ) {
appTop.conn.goOffline.style.display = 'inline-block';
} else if ( goOnline ) {
goOnline.style.display = 'inline-block';
}
} else {
appTop.conn.goOffline.style.display = 'none';
}
// if the offline modal fades away automatically, we don't need the close button
if(appp_settings.app_offline_toggle) {
appTop.conn.closeOffline.style.display = 'inline-block';
} else {
appTop.conn.closeOffline.style.display = 'none';
}
appTop.conn.offlineFooter.classList.add('fade-in');
},
closeOfflineModal: function() {
appTop.conn.cacheSelectors();
appTop.conn.offlineFooter.classList.remove('fade-in');
},
closeOnlineModal: function() {
appTop.conn.cacheSelectors();
appTop.conn.onlineFooter.classList.remove('fade-in');
},
openOnlineModal: function() {
// cache selectors and attach click events
appTop.conn.init();
appTop.conn.onlineFooter.classList.add('fade-in');
},
/**
* Handles redirects between index.html and offline.html and
* displays the prompting to the user
*/
toggleStatus: function() {
appTop.conn.debug.log('Toggle Connection', navigator.network.connection.type);
appTop.conn.events.cancel_timeout();
appTop.conn.debug.log(appTop.conn.current_mode);
if( appTop.conn.getCurrentMode() == 'offline' ) {
if( appTop.conn.iframe_exists ) {
appTop.conn.offlinePrompt();
} else if ( window.location.href.indexOf('offline.html') < 0 ) {
// just started the app -- offline
window.location = 'offline/offline.html';
} else {
// already offline
}
} else if( appTop.conn.getCurrentMode() == 'online' ) {
if( ! appTop.conn.iframe_exists ) {
if ( window.location.href.indexOf('offline.html') > 0 ) {
if( appp_settings.app_offline_toggle ) {
this.onlinePrompt();
} else {
window.location = '../index.html';
}
}
} else {
// already looking at the iframe:
// just gracefully close the modal without user action
this.closeOfflineModal();
}
// TODO: where's a better place to put this or do we even need it anymore?
//appTop.conn.onlineTransition();
} else {
appTop.conn.log('Current mode', appTop.conn.current_mode);
appTop.conn.debug.log('Toggle Connection', navigator.network.connection.type);
}
},
get_remote_script_status: function( url ) {
var http = new XMLHttpRequest();
http.open('HEAD', url, false);
http.send();
return http.status;
},
/**
* Online network connection confirmed, prompt the user with a modal in the offline.html file.
*/
onlinePrompt: function() {
this.openOnlineModal();
},
/**
* Offline network connection confirmed, prompt the user with a modal in the offline.html file.
*/
offlinePrompt: function() {
// show the offline-footer div
this.openOfflineModal();
},
/**
* Deprecated
*
* Used when the iframe already exists, but the site doesn't contain the apppCore
* It will refresh the iframe in an attempt to reload the page
*/
onlineTransition: function() {
// document.getElementById('offline-footer').style.opacity = 0;
var iWin = document.getElementById('myApp').contentWindow.window;
if( typeof iWin != 'object' || typeof iWin.apppCore != 'object' ) {
if( appTop.conn.online_reset == 0 ) {
// only do this once, careful not to create an infite loop
appTop.conn.online_reset = 1;
document.getElementById('myApp').src = document.getElementById('myApp').src;
}
}
},
/**
* Allow offline checking to be disabled.
* Set appp_settings.bypass_offline_check = true
*/
preOfflineCheck: function() {
appp_settings.bypass_offline_check = (typeof appp_settings.bypass_offline_check !== 'undefined' && appp_settings.bypass_offline_check === true);
},
/**
* Check for a network connection before requesting remote resources
*/
offlineCheck: function() {
appTop.conn.debug.log("connection type" + navigator.network.connection.type);
if(navigator.network.connection.type == Connection.NONE && appp_settings.bypass_offline_check === false) {
appTop.conn.current_mode = 'offline';
appTop.conn.online_reset = 0;
} else {
appTop.conn.current_mode = 'online';
}
return appTop.conn.current_mode;
},
debug: {
log: function() {
if(appTop.conn.debugging) {
console.log.apply(console, arguments);
}
}
}
};