Java tutorial
/** * Task Accelerator - Full ajax task management application run on Google App Engine - * Copyright (C) 2011 tnakamura * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package accelerator.client.activity; import accelerator.client.ClientFactory; import accelerator.client.place.InboxPlace; import accelerator.client.place.ProjectPlace; import accelerator.client.place.SchedulePlace; import accelerator.client.place.TagPlace; import accelerator.client.place.TodayPlace; import accelerator.client.presenter.InboxPresenter; import accelerator.client.presenter.ProjectPresenter; import accelerator.client.presenter.SchedulePresenter; import accelerator.client.presenter.TagPresenter; import accelerator.client.presenter.TodayPresenter; import com.google.gwt.activity.shared.Activity; import com.google.gwt.activity.shared.ActivityMapper; import com.google.gwt.place.shared.Place; public class AppActivityMapper implements ActivityMapper { private final ClientFactory clientFactory; public AppActivityMapper(ClientFactory clientFactory) { super(); this.clientFactory = clientFactory; } public Activity getActivity(Place place) { if (place instanceof InboxPlace) { return new InboxPresenter((InboxPlace) place, clientFactory); } else if (place instanceof TodayPlace) { return new TodayPresenter((TodayPlace) place, clientFactory); } else if (place instanceof SchedulePlace) { return new SchedulePresenter((SchedulePlace) place, clientFactory); } else if (place instanceof ProjectPlace) { return new ProjectPresenter((ProjectPlace) place, clientFactory); } else if (place instanceof TagPlace) { return new TagPresenter((TagPlace) place, clientFactory); } return null; } }