Java tutorial
/* * Copyright (C) 2000 - 2018 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: * "http://www.silverpeas.org/docs/core/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.network; import com.google.gwt.core.client.GWT; import com.google.gwt.http.client.Request; import com.google.gwt.http.client.RequestCallback; import com.google.gwt.http.client.Response; import com.google.gwt.user.client.Command; import org.silverpeas.mobile.client.SpMobil; import org.silverpeas.mobile.client.common.EventBus; import org.silverpeas.mobile.client.common.event.ErrorEvent; import org.silverpeas.mobile.client.resources.ApplicationMessages; import org.silverpeas.mobile.shared.exceptions.AuthenticationException; /** * @author: svu */ public abstract class RequestCallbackOnlineOrOffline<T> implements RequestCallback { private static ApplicationMessages msg = GWT.create(ApplicationMessages.class); private Command offlineAction; public RequestCallbackOnlineOrOffline(Command offlineAction) { this.offlineAction = offlineAction; } public abstract void attempt(); @Override public void onResponseReceived(Request request, Response response) { OfflineHelper.hideOfflineIndicator(); } @Override public void onError(Request request, Throwable t) { onError(t); } public void onError(Throwable t) { if (t instanceof AuthenticationException) { SpMobil.getInstance().loadIds(new Command() { @Override public void execute() { attempt(); } }); if (OfflineHelper.needToGoOffine(t)) { if (offlineAction != null) offlineAction.execute(); } } else { if (OfflineHelper.needToGoOffine(t)) { if (offlineAction != null) offlineAction.execute(); } else { EventBus.getInstance().fireEvent(new ErrorEvent(t)); } } } }