| // Copyright 2007, 2008 The Apache Software Foundation |
| // |
| // 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 org.apache.tapestry5.internal.services; |
| |
| import org.apache.tapestry5.Link; |
| import org.apache.tapestry5.services.PersistentFieldChange; |
| import org.apache.tapestry5.services.PersistentFieldStrategy; |
| |
| import java.util.Collection; |
| |
| /** |
| * Implements simple client-persistent properties. Most of the logic is delegated to an instance of {@link |
| * ClientPersistentFieldStorage}. This division of layer allows this service to be a true singleton, and a listener to |
| * the {@link LinkFactory}, and allow per-request state to be isolated inside the other service. |
| */ |
| public class ClientPersistentFieldStrategy implements PersistentFieldStrategy, LinkFactoryListener |
| { |
| private final ClientPersistentFieldStorage storage; |
| |
| public ClientPersistentFieldStrategy(ClientPersistentFieldStorage storage) |
| { |
| this.storage = storage; |
| } |
| |
| public Collection<PersistentFieldChange> gatherFieldChanges(String pageName) |
| { |
| return storage.gatherFieldChanges(pageName); |
| } |
| |
| public void postChange(String pageName, String componentId, String fieldName, Object newValue) |
| { |
| storage.postChange(pageName, componentId, fieldName, newValue); |
| } |
| |
| public void createdActionLink(Link link) |
| { |
| storage.updateLink(link); |
| } |
| |
| public void createdPageLink(Link link) |
| { |
| storage.updateLink(link); |
| } |
| |
| public void discardChanges(String pageName) |
| { |
| storage.discardChanges(pageName); |
| } |
| } |