/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.directory.studio.templateeditor.view;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
/**
* This class implements the comparator for a table viewer with columns.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class ColumnsTableViewerComparator extends ViewerComparator
{
public static final int ASCENDING = 1;
/** The associated table label provider */
protected ITableLabelProvider labelProvider;
/** The comparison order */
int order = ASCENDING;
/** The column used to compare objects */
int column = 0;
/**
* Creates a new instance of ColumnsTableViewerComparator.
*
* @param labelProvider
* the label provider
*/
public ColumnsTableViewerComparator( ITableLabelProvider labelProvider )
{
this.labelProvider = labelProvider;
}
/**
* {@inheritDoc}
*/
public int compare( Viewer viewer, Object e1, Object e2 )
{
String s1 = labelProvider.getColumnText( e1, column );
String s2 = labelProvider.getColumnText( e2, column );
return s1.compareToIgnoreCase( s2 ) * order;
}
/**
* Gets the column.
*
* @return the column
*/
public int getColumn()
{
return column;
}
/**
* Gets the order.
*
* @return the order
*/
public int getOrder()
{
return order;
}
/**
* Reverses the order.
*/
public void reverseOrder()
{
order = order * -1;
}
/**
* Sets the column.
*
* @param column the column
*/
public void setColumn( int column )
{
this.column = column;
}
/**
* Sets the order.
*
* @param order the order
*/
public void setOrder( int order )
{
this.order = order;
}
}