001/* ======================================================================== 002 * JCommon : a free general purpose class library for the Java(tm) platform 003 * ======================================================================== 004 * 005 * (C) Copyright 2000-2009, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jcommon/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ----------------------- 028 * StrokeChooserPanel.java 029 * ----------------------- 030 * (C) Copyright 2000-2009, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): Dirk Zeitz; 034 * 035 * $Id: StrokeChooserPanel.java,v 1.8 2009/02/27 13:58:41 mungady Exp $ 036 * 037 * Changes (from 26-Oct-2001) 038 * -------------------------- 039 * 26-Oct-2001 : Changed package to com.jrefinery.ui.*; 040 * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG); 041 * 16-Mar-2004 : Fix for focus problems (DZ); 042 * 27-Feb-2009 : Fixed bug 2612649, NullPointerException (DG); 043 * 044 */ 045 046package org.jfree.ui; 047 048import java.awt.BorderLayout; 049import java.awt.Stroke; 050import java.awt.event.ActionEvent; 051import java.awt.event.ActionListener; 052 053import javax.swing.DefaultComboBoxModel; 054import javax.swing.JComboBox; 055import javax.swing.JPanel; 056 057/** 058 * A component for choosing a stroke from a list of available strokes. This 059 * class needs work. 060 * 061 * @author David Gilbert 062 */ 063public class StrokeChooserPanel extends JPanel { 064 065 /** A combo for selecting the stroke. */ 066 private JComboBox selector; 067 068 /** 069 * Creates a panel containing a combo-box that allows the user to select 070 * one stroke from a list of available strokes. 071 * 072 * @param current the current stroke sample. 073 * @param available an array of 'available' stroke samples. 074 */ 075 public StrokeChooserPanel(StrokeSample current, StrokeSample[] available) { 076 setLayout(new BorderLayout()); 077 // we've changed the behaviour here to populate the combo box 078 // with Stroke objects directly - ideally we'd change the signature 079 // of the constructor too...maybe later. 080 DefaultComboBoxModel model = new DefaultComboBoxModel(); 081 for (int i = 0; i < available.length; i++) { 082 model.addElement(available[i].getStroke()); 083 } 084 this.selector = new JComboBox(model); 085 this.selector.setSelectedItem(current.getStroke()); 086 this.selector.setRenderer(new StrokeSample(null)); 087 add(this.selector); 088 // Changes due to focus problems!! DZ 089 this.selector.addActionListener(new ActionListener() { 090 public void actionPerformed(final ActionEvent evt) { 091 getSelector().transferFocus(); 092 } 093 }); 094 } 095 096 097 /** 098 * Returns the selector component. 099 * 100 * @return Returns the selector. 101 */ 102 protected final JComboBox getSelector() { 103 return this.selector; 104 } 105 106 /** 107 * Returns the selected stroke. 108 * 109 * @return The selected stroke (possibly <code>null</code>). 110 */ 111 public Stroke getSelectedStroke() { 112 return (Stroke) this.selector.getSelectedItem(); 113 } 114 115}