001 /* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2005, 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 * Spinner.java
029 * ------------
030 * (C) Copyright 2002-2004, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * $Id $
036 *
037 * Changes
038 * -------
039 * 14-Oct-2002 : Version 1 (DG);
040 *
041 */
042
043 package org.jfree.ui;
044
045 import java.awt.BorderLayout;
046 import java.awt.GridLayout;
047 import java.awt.event.MouseEvent;
048 import java.awt.event.MouseListener;
049 import javax.swing.JPanel;
050 import javax.swing.JTextField;
051 import javax.swing.SwingConstants;
052
053 /**
054 * A very basic spinner component, used for demo purposes only.
055 *
056 * @author David Gilbert
057 */
058 public class Spinner extends JPanel implements MouseListener {
059
060 /** The current value. */
061 private int value;
062
063 /** The text field displaying the value. */
064 private JTextField textField;
065
066 /** The arrow button panel. */
067 private JPanel buttonPanel;
068
069 /** The up button. */
070 private ArrowPanel upButton;
071
072 /** The down button. */
073 private ArrowPanel downButton;
074
075 /**
076 * Creates a new spinner.
077 *
078 * @param value the initial value.
079 */
080 public Spinner(final int value) {
081 super(new BorderLayout());
082 this.value = value;
083 this.textField = new JTextField(Integer.toString(this.value));
084 this.textField.setHorizontalAlignment(SwingConstants.RIGHT);
085 add(this.textField);
086 this.buttonPanel = new JPanel(new GridLayout(2, 1, 0, 1));
087 this.upButton = new ArrowPanel(ArrowPanel.UP);
088 this.upButton.addMouseListener(this);
089 this.downButton = new ArrowPanel(ArrowPanel.DOWN);
090 this.downButton.addMouseListener(this);
091 this.buttonPanel.add(this.upButton);
092 this.buttonPanel.add(this.downButton);
093 add(this.buttonPanel, BorderLayout.EAST);
094 }
095
096 /**
097 * Returns the current value.
098 *
099 * @return the current value.
100 */
101 public int getValue() {
102 return this.value;
103 }
104
105 /**
106 * Receives notification of mouse clicks.
107 *
108 * @param e the mouse event.
109 */
110 public void mouseClicked(final MouseEvent e) {
111 if (e.getSource() == this.upButton) {
112 this.value++;
113 this.textField.setText(Integer.toString(this.value));
114 firePropertyChange("value", this.value - 1, this.value);
115 }
116 else if (e.getSource() == this.downButton) {
117 this.value--;
118 this.textField.setText(Integer.toString(this.value));
119 firePropertyChange("value", this.value + 1, this.value);
120 }
121 }
122
123 /**
124 * Receives notification of mouse events.
125 *
126 * @param e the mouse event.
127 */
128 public void mouseEntered(final MouseEvent e) {
129 // ignored
130 }
131
132 /**
133 * Receives notification of mouse events.
134 *
135 * @param e the mouse event.
136 */
137 public void mouseExited(final MouseEvent e) {
138 // ignored
139 }
140
141 /**
142 * Receives notification of mouse events.
143 *
144 * @param e the mouse event.
145 */
146 public void mousePressed(final MouseEvent e) {
147 // ignored
148 }
149
150 /**
151 * Receives notification of mouse events.
152 *
153 * @param e the mouse event.
154 */
155 public void mouseReleased(final MouseEvent e) {
156 // ignored
157 }
158
159 }