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/*
* Pointless Viewer, a web-based Beamer presentation viewer
* Copyright (C) 2018 Pacien TRAN-GIRARD
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
"use strict";
// script put at the root of the app so it can intercept all requests made from the current directory.
class AppCache {
constructor() {
this.cacheName = "cache";
this.filesToCache = [
".",
"popup.html",
"appcache.js",
"favicon.ico",
"pointless/pdfjs/pdf.js",
"pointless/pdfjs/pdf.worker.js",
"pointless/viewer/viewer.css",
"pointless/viewer/init.js",
"pointless/viewer/viewer.js",
"pointless/viewer/presentation.js",
"pointless/viewer/stage/stage.js",
"pointless/viewer/stage/actions.js",
"pointless/viewer/screen/screen.js",
"pointless/viewer/screen/timer.js"
];
const appCache = this;
self.addEventListener("install", function(event) {
event.waitUntil(appCache._onInstall());
});
self.addEventListener("fetch", function(event) {
event.respondWith(appCache._onFetch(event.request));
});
}
_onInstall() {
const self = this;
return caches.open(this.cacheName).then(function(cache) {
return cache.addAll(self.filesToCache);
});
}
_onFetch(request) {
return navigator.onLine ? this._fetchUpdate(request) : caches.match(request);
}
_fetchUpdate(request) {
return caches.open(this.cacheName).then(function(cache) {
return fetch(request).then(function(response) {
cache.put(request, response.clone());
return response;
});
});
}
}
const appCache = new AppCache();
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