001// Copyright 2004, 2005 The Apache Software Foundation 002// 003// Licensed under the Apache License, Version 2.0 (the "License"); 004// you may not use this file except in compliance with the License. 005// You may obtain a copy of the License at 006// 007// http://www.apache.org/licenses/LICENSE-2.0 008// 009// Unless required by applicable law or agreed to in writing, software 010// distributed under the License is distributed on an "AS IS" BASIS, 011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012// See the License for the specific language governing permissions and 013// limitations under the License. 014 015package org.apache.tapestry.contrib.table.components; 016 017import org.apache.hivemind.ApplicationRuntimeException; 018import org.apache.tapestry.BaseComponent; 019import org.apache.tapestry.IRequestCycle; 020import org.apache.tapestry.contrib.table.model.ITableModelSource; 021 022/** 023 * The base implementation for a component that is wrapped by 024 * the TableView component. Provides a utility method for getting 025 * a pointer to TableView. 026 * 027 * @author mindbridge 028 */ 029public abstract class AbstractTableViewComponent extends BaseComponent 030{ 031 public ITableModelSource getTableModelSource() 032 { 033 IRequestCycle objCycle = getPage().getRequestCycle(); 034 035 ITableModelSource objSource = 036 (ITableModelSource) objCycle.getAttribute( 037 ITableModelSource.TABLE_MODEL_SOURCE_ATTRIBUTE); 038 039 if (objSource == null) 040 throw new ApplicationRuntimeException( 041 "The component " 042 + getId() 043 + " must be contained within an ITableModelSource component, such as TableView", 044 this, 045 null, 046 null); 047 048 return objSource; 049 } 050 051}