Java tutorial
/* * Copyright 2010 * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package com.mvp.client.mapper; import com.google.gwt.activity.shared.Activity; import com.google.gwt.activity.shared.ActivityMapper; import com.google.gwt.place.shared.Place; import com.mvp.client.ClientFactory; import com.mvp.client.activity.CellTableActivity; import com.mvp.client.activity.CellTableSortingActivity; import com.mvp.client.activity.GoodbyeActivity; import com.mvp.client.activity.HelloActivity; import com.mvp.client.activity.RootActivity; import com.mvp.client.place.CellTablePlace; import com.mvp.client.place.CellTableSortingPlace; import com.mvp.client.place.GoodbyePlace; import com.mvp.client.place.HelloPlace; import com.mvp.client.place.RootPlace; public class AppActivityMapper implements ActivityMapper { private ClientFactory clientFactory; public AppActivityMapper(ClientFactory clientFactory) { super(); this.clientFactory = clientFactory; } @Override public Activity getActivity(Place place) { if (place instanceof HelloPlace) return new HelloActivity((HelloPlace) place, clientFactory); else if (place instanceof GoodbyePlace) return new GoodbyeActivity((GoodbyePlace) place, clientFactory); else if (place instanceof CellTablePlace) return new CellTableActivity((CellTablePlace) place, clientFactory); else if (place instanceof CellTableSortingPlace) return new CellTableSortingActivity((CellTableSortingPlace) place, clientFactory); else if (place instanceof RootPlace) return new RootActivity((RootPlace) place, clientFactory); return null; } }