CacheStorageHelper.java

/*
 * Copyright (C) 2000 - 2025 Silverpeas
 *
 * 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.
 *
 * As a special exception to the terms and conditions of version 3.0 of
 * the GPL, you may redistribute this Program in connection with Free/Libre
 * Open Source Software ("FLOSS") applications as described in Silverpeas's
 * FLOSS exception.  You should have received a copy of the text describing
 * the FLOSS exception, and it is also available here:
 * "https://www.silverpeas.org/legal/floss_exception.html"
 *
 * 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 <http://www.gnu.org/licenses/>.
 */

package org.silverpeas.mobile.client.common.storage;

/**
 * @author svu
 */
public class CacheStorageHelper {

  public static void store(String request) {
    addToCache(request);
  }

  public static native void clear() /*-{
    if (!$wnd.caches) {
      return;
    }
    $wnd.caches.open('spmobileOffline').then(function(cache) {
      return cache.keys().then(function(requests) {
        return Promise.all(requests.map(function(request) {
          return cache["delete"](request);
        }));
      });
    })["catch"](function() {
      // Offline caching is optional when browser storage is unavailable.
    });
  }-*/;

  private static native void addToCache(String req) /*-{
    if (!req || !$wnd.caches) {
      return;
    }
    $wnd.caches.open('spmobileOffline').then(function(cache) {
      return cache.add(req);
    })["catch"](function() {
      // A failed prefetch must not interrupt navigation or reject an unhandled promise.
    });
  }-*/;
}