| /* |
| * Copyright 2010 Google Inc. |
| * |
| * 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.google.gwt.sample.expenses.client.place; |
| |
| import com.google.gwt.place.shared.Place; |
| import com.google.gwt.place.shared.PlaceTokenizer; |
| import com.google.gwt.place.shared.Prefix; |
| import com.google.gwt.requestfactory.shared.EntityProxy; |
| import com.google.gwt.requestfactory.shared.EntityProxyId; |
| import com.google.gwt.requestfactory.shared.RequestFactory; |
| |
| /** |
| * A place in the app that deals with a specific {@link RequestFactory} proxy. |
| */ |
| public class ProxyPlace extends Place { |
| /** |
| * The things you do with a record, each of which is a different bookmarkable |
| * location in the scaffold app. |
| */ |
| public enum Operation { |
| CREATE, EDIT, DETAILS |
| } |
| |
| /** |
| * Tokenizer. |
| */ |
| @Prefix("r") |
| public static class Tokenizer implements PlaceTokenizer<ProxyPlace> { |
| /** |
| * |
| */ |
| private static final String SEPARATOR = "!"; |
| private final RequestFactory requests; |
| |
| public Tokenizer(RequestFactory requests) { |
| this.requests = requests; |
| } |
| |
| public ProxyPlace getPlace(String token) { |
| String bits[] = token.split(SEPARATOR); |
| Operation operation = Operation.valueOf(bits[1]); |
| if (Operation.CREATE == operation) { |
| return new ProxyPlace(requests.getProxyClass(bits[0])); |
| } |
| return new ProxyPlace(requests.getProxyId(bits[0]), operation); |
| } |
| |
| public String getToken(ProxyPlace place) { |
| if (Operation.CREATE == place.getOperation()) { |
| return requests.getHistoryToken(place.getProxyClass()) + SEPARATOR |
| + place.getOperation(); |
| } |
| return requests.getHistoryToken(place.getProxyId()) + SEPARATOR |
| + place.getOperation(); |
| } |
| } |
| |
| private final EntityProxyId<?> proxyId; |
| private final Class<? extends EntityProxy> proxyClass; |
| private final Operation operation; |
| |
| public ProxyPlace(Class<? extends EntityProxy> proxyClass) { |
| this.operation = Operation.CREATE; |
| this.proxyId = null; |
| this.proxyClass = proxyClass; |
| } |
| |
| public ProxyPlace(EntityProxyId<?> record) { |
| this(record, Operation.DETAILS); |
| } |
| |
| public ProxyPlace(EntityProxyId<?> proxyId, Operation operation) { |
| this.operation = operation; |
| this.proxyId = proxyId; |
| this.proxyClass = null; |
| assert Operation.CREATE != operation; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null) { |
| return false; |
| } |
| if (getClass() != obj.getClass()) { |
| return false; |
| } |
| ProxyPlace other = (ProxyPlace) obj; |
| if (operation != other.operation) { |
| return false; |
| } |
| if (proxyClass == null) { |
| if (other.proxyClass != null) { |
| return false; |
| } |
| } else if (!proxyClass.equals(other.proxyClass)) { |
| return false; |
| } |
| if (proxyId == null) { |
| if (other.proxyId != null) { |
| return false; |
| } |
| } else if (!proxyId.equals(other.proxyId)) { |
| return false; |
| } |
| return true; |
| } |
| |
| public Operation getOperation() { |
| return operation; |
| } |
| |
| public Class<? extends EntityProxy> getProxyClass() { |
| return proxyId != null ? proxyId.getProxyClass() : proxyClass; |
| } |
| |
| /** |
| * @return the proxyId, or null if the operation is {@link Operation#CREATE} |
| */ |
| public EntityProxyId<?> getProxyId() { |
| return proxyId; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((operation == null) ? 0 : operation.hashCode()); |
| result = prime * result |
| + ((proxyClass == null) ? 0 : proxyClass.hashCode()); |
| result = prime * result + ((proxyId == null) ? 0 : proxyId.hashCode()); |
| return result; |
| } |
| |
| @Override |
| public String toString() { |
| return "ProxyPlace [operation=" + operation + ", proxy=" + proxyId |
| + ", proxyClass=" + proxyClass + "]"; |
| } |
| } |