// Copyright 2004, 2005 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.inserted;
import org.apache.tapestry.BaseComponent;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.Tapestry;
import org.apache.tapestry.contrib.table.components.Table;
import org.apache.tapestry.contrib.table.model.ITableColumn;
import org.apache.tapestry.contrib.table.model.ITableModelSource;
import org.apache.tapestry.contrib.table.model.ITableRendererListener;
import org.apache.tapestry.event.PageDetachListener;
import org.apache.tapestry.event.PageEvent;
import org.apache.tapestry.util.ComponentAddress;
/**
* A component that renders a sorting link - to be used with contrib:Table when
* customizing a column's header.
*
*
* @author andyhot
*/
public abstract class SimpleTableColumnSortLink extends BaseComponent
implements ITableRendererListener, PageDetachListener
{
// transient
private ITableColumn m_objColumn;
private ITableModelSource m_objModelSource;
public SimpleTableColumnSortLink()
{
init();
}
public abstract Table getTable();
/**
* @see org.apache.tapestry.event.PageDetachListener#pageDetached(PageEvent)
*/
public void pageDetached(PageEvent arg0)
{
init();
}
private void init()
{
m_objColumn = null;
m_objModelSource = null;
}
public void prepareForRender(IRequestCycle cycle)
{
if (getTable()==null)
throw Tapestry.createRequiredParameterException(this, "table");
m_objModelSource = getTable();
m_objColumn = getTable().getTableColumn();
}
/**
* @see org.apache.tapestry.contrib.table.model.ITableRendererListener#initializeRenderer(IRequestCycle,
* ITableModelSource, ITableColumn, Object)
*/
public void initializeRenderer(IRequestCycle objCycle, ITableModelSource objSource,
ITableColumn objColumn, Object objRow)
{
m_objModelSource = objSource;
m_objColumn = objColumn;
}
public Object[] getColumnSelectedParameters()
{
return new Object[] {
new ComponentAddress(m_objModelSource),
m_objColumn.getColumnName()
};
}
public void columnSelected(IRequestCycle objCycle)
{
Object[] arrArgs = objCycle.getListenerParameters();
ComponentAddress objAddr = (ComponentAddress) arrArgs[0];
String strColumnName = (String) arrArgs[1];
ITableModelSource objSource = (ITableModelSource) objAddr.findComponent(objCycle);
objSource.storeTableAction(new TableActionColumnSort(strColumnName));
}
}