// 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.model.simple;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import org.apache.tapestry.contrib.table.model.CTableDataModelEvent;
import org.apache.tapestry.contrib.table.model.common.AbstractTableDataModel;
import org.apache.tapestry.contrib.table.model.common.ArrayIterator;
/**
* A minimal list implementation of the
* {@link org.apache.tapestry.contrib.table.model.ITableDataModel} interface
*
* @author mindbridge
*/
public class SimpleListTableDataModel extends AbstractTableDataModel implements Serializable
{
private static final long serialVersionUID = 1L;
private List m_arrRows;
public SimpleListTableDataModel(Object[] arrRows)
{
this(Arrays.asList(arrRows));
}
public SimpleListTableDataModel(List arrRows)
{
m_arrRows = arrRows;
}
public SimpleListTableDataModel(Collection arrRows)
{
m_arrRows = new ArrayList(arrRows);
}
public SimpleListTableDataModel(Iterator objRows)
{
m_arrRows = new ArrayList();
addAll(m_arrRows, objRows);
}
private void addAll(List arrRows, Iterator objRows)
{
while (objRows.hasNext())
arrRows.add(objRows.next());
}
/**
* @see org.apache.tapestry.contrib.table.model.ITableDataModel#getRowCount()
*/
public int getRowCount()
{
return m_arrRows.size();
}
/**
* Returns the row element at the given position
* @param nRow the index of the element to return
*/
public Object getRow(int nRow)
{
if (nRow < 0 || nRow >= m_arrRows.size())
{
// error message
return null;
}
return m_arrRows.get(nRow);
}
/**
* Returns an Iterator with the elements from the given range
* @param nFrom the start of the range (inclusive)
* @param nTo the stop of the range (exclusive)
*/
public Iterator getRows(int nFrom, int nTo)
{
return new ArrayIterator(m_arrRows.toArray(), nFrom, nTo);
}
/**
* @see org.apache.tapestry.contrib.table.model.ITableDataModel#getRows()
*/
public Iterator getRows()
{
return m_arrRows.iterator();
}
/**
* Method addRow.
* Adds a row object to the model at its end
* @param objRow the row object to add
*/
public void addRow(Object objRow)
{
m_arrRows.add(objRow);
CTableDataModelEvent objEvent = new CTableDataModelEvent();
fireTableDataModelEvent(objEvent);
}
public void addRows(Collection arrRows)
{
m_arrRows.addAll(arrRows);
CTableDataModelEvent objEvent = new CTableDataModelEvent();
fireTableDataModelEvent(objEvent);
}
/**
* Method removeRow.
* Removes a row object from the model
* @param objRow the row object to remove
*/
public void removeRow(Object objRow)
{
m_arrRows.remove(objRow);
CTableDataModelEvent objEvent = new CTableDataModelEvent();
fireTableDataModelEvent(objEvent);
}
public void removeRows(Collection arrRows)
{
m_arrRows.removeAll(arrRows);
CTableDataModelEvent objEvent = new CTableDataModelEvent();
fireTableDataModelEvent(objEvent);
}
}