51 lines
1.1 KiB
JavaScript
51 lines
1.1 KiB
JavaScript
var WildEmitter = require('wildemitter');
|
|
var STATES = [
|
|
'uncached',
|
|
'idle',
|
|
'checking',
|
|
'downloading',
|
|
'updateReady',
|
|
'obsolete'
|
|
];
|
|
|
|
function AppCache() {
|
|
WildEmitter.call(this);
|
|
|
|
var self = this;
|
|
this.cache = window.applicationCache;
|
|
this.state = STATES[this.cache.status];
|
|
this.emit('change', this.state);
|
|
|
|
function mapevent(name, altName) {
|
|
self.cache.addEventListener(name, function (e) {
|
|
var newState = STATES[self.cache.status];
|
|
if (newState !== self.state) {
|
|
self.state = newState;
|
|
self.emit('change', newState);
|
|
}
|
|
self.emit(altName || name, e);
|
|
}, false);
|
|
}
|
|
mapevent('cached');
|
|
mapevent('checking');
|
|
mapevent('downloading');
|
|
mapevent('error');
|
|
mapevent('noupdate', 'noUpdate');
|
|
mapevent('obsolete');
|
|
mapevent('progress');
|
|
mapevent('updateready', 'updateReady');
|
|
}
|
|
|
|
AppCache.prototype = Object.create(WildEmitter.prototype, {
|
|
constructor: {
|
|
value: AppCache
|
|
}
|
|
});
|
|
|
|
AppCache.prototype.update = function () {
|
|
this.cache.update();
|
|
};
|
|
|
|
|
|
module.exports = AppCache;
|