| // Copyright 2004 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.tapestry.contrib.table.components; |
| |
| import java.io.Serializable; |
| |
| import org.apache.tapestry.contrib.table.model.ITableModel; |
| import org.apache.tapestry.contrib.table.model.ITableSessionStateManager; |
| import org.apache.tapestry.contrib.table.model.simple.SimpleTableState; |
| |
| /** |
| * Acts like {@link org.apache.tapestry.contrib.table.model.common.FullTableSessionStateManager} |
| * if the model is provided via the tableModel parameter; |
| * saves only the model state otherwise. |
| * |
| * @author mindbridge |
| * @version $Id$ |
| */ |
| public class TableViewSessionStateManager implements ITableSessionStateManager |
| { |
| private TableView m_objView; |
| |
| public TableViewSessionStateManager(TableView objView) |
| { |
| m_objView = objView; |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.table.model.ITableSessionStateManager#getSessionState(org.apache.tapestry.contrib.table.model.ITableModel) |
| */ |
| public Serializable getSessionState(ITableModel objModel) |
| { |
| // if the model is provided using the 'tableModel' parameter, |
| // emulate FullTableSessionStateManager and save everything |
| // (backward compatibility) |
| if (m_objView.getCachedTableModelValue() != null) |
| return (Serializable) objModel; |
| |
| // otherwise save only the state |
| return new SimpleTableState(objModel.getPagingState(), objModel.getSortingState()); |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.table.model.ITableSessionStateManager#recreateTableModel(java.io.Serializable) |
| */ |
| public ITableModel recreateTableModel(Serializable objState) |
| { |
| // if the state implements ITableModel, return itself |
| // (backward compatibility) |
| if (objState instanceof ITableModel) |
| return (ITableModel) objState; |
| |
| // otherwise have the component re-generate the model using the provided state |
| return m_objView.generateTableModel((SimpleTableState) objState); |
| } |
| |
| } |