// $Id: UMLSingleRowSelector.java 41 2010-04-03 20:04:12Z marcusvnac $
// Copyright (c) 1996-2007 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies. This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason. IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
package org.argouml.uml.ui;
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListModel;
/**
* A control for displaying the contents of a list model that is know to only
* ever contain one item. Preferred, maximum and minimum size are all returned
* as the height of one row.
*
* @author Bob Tarling
* @since 0.23 alpha3
*/
public class UMLSingleRowSelector extends JPanel {
/**
* The scrollpane that will contain the list
*/
private JScrollPane scroll;
private Dimension preferredSize = null;
/**
* Constructor
* @param model The single item list model
*/
public UMLSingleRowSelector(ListModel model) {
super(new BorderLayout());
scroll = new ScrollList(model, 1);
add(scroll);
preferredSize = scroll.getPreferredSize();
scroll.setVerticalScrollBarPolicy(
JScrollPane.VERTICAL_SCROLLBAR_NEVER);
scroll.setHorizontalScrollBarPolicy(
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
}
/**
* Make sure the control is always a fixed height
* @return the minimum size as the height of one row in a JList
*/
public Dimension getMinimumSize() {
Dimension size = super.getMinimumSize();
size.height = preferredSize.height;
return size;
}
/**
* Make sure the control is always a fixed height
* @return the maximum size as the height of one row in a JList
*/
public Dimension getMaximumSize() {
Dimension size = super.getMaximumSize();
size.height = preferredSize.height;
return size;
}
/**
* @return the preferred size as the height of one row in a JList
*/
public Dimension getPreferredSize() {
return preferredSize;
}
}