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
050 import javax.swing.JPanel;
051 import javax.swing.JTextField;
052 import javax.swing.SwingConstants;
053
054 /**
055 * A very basic spinner component, used for demo purposes only.
056 *
057 * @author David Gilbert
058 */
059 public class Spinner extends JPanel implements MouseListener {
060
061 /** The current value. */
062 private int value;
063
064 /** The text field displaying the value. */
065 private JTextField textField;
066
067 /** The arrow button panel. */
068 private JPanel buttonPanel;
069
070 /** The up button. */
071 private ArrowPanel upButton;
072
073 /** The down button. */
074 private ArrowPanel downButton;
075
076 /**
077 * Creates a new spinner.
078 *
079 * @param value the initial value.
080 */
081 public Spinner(final int value) {
082 super(new BorderLayout());
083 this.value = value;
084 this.textField = new JTextField(Integer.toString(this.value));
085 this.textField.setHorizontalAlignment(SwingConstants.RIGHT);
086 add(this.textField);
087 this.buttonPanel = new JPanel(new GridLayout(2, 1, 0, 1));
088 this.upButton = new ArrowPanel(ArrowPanel.UP);
089 this.upButton.addMouseListener(this);
090 this.downButton = new ArrowPanel(ArrowPanel.DOWN);
091 this.downButton.addMouseListener(this);
092 this.buttonPanel.add(this.upButton);
093 this.buttonPanel.add(this.downButton);
094 add(this.buttonPanel, BorderLayout.EAST);
095 }
096
097 /**
098 * Returns the current value.
099 *
100 * @return the current value.
101 */
102 public int getValue() {
103 return this.value;
104 }
105
106 /**
107 * Receives notification of mouse clicks.
108 *
109 * @param e the mouse event.
110 */
111 public void mouseClicked(final MouseEvent e) {
112 if (e.getSource() == this.upButton) {
113 this.value++;
114 this.textField.setText(Integer.toString(this.value));
115 firePropertyChange("value", this.value - 1, this.value);
116 }
117 else if (e.getSource() == this.downButton) {
118 this.value--;
119 this.textField.setText(Integer.toString(this.value));
120 firePropertyChange("value", this.value + 1, this.value);
121 }
122 }
123
124 /**
125 * Receives notification of mouse events.
126 *
127 * @param e the mouse event.
128 */
129 public void mouseEntered(final MouseEvent e) {
130 // ignored
131 }
132
133 /**
134 * Receives notification of mouse events.
135 *
136 * @param e the mouse event.
137 */
138 public void mouseExited(final MouseEvent e) {
139 // ignored
140 }
141
142 /**
143 * Receives notification of mouse events.
144 *
145 * @param e the mouse event.
146 */
147 public void mousePressed(final MouseEvent e) {
148 // ignored
149 }
150
151 /**
152 * Receives notification of mouse events.
153 *
154 * @param e the mouse event.
155 */
156 public void mouseReleased(final MouseEvent e) {
157 // ignored
158 }
159
160 }