1 /* ========================================================================
2  * JCommon : a free general purpose class library for the Java(tm) platform
3  * ========================================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info:  http://www.jfree.org/jcommon/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ------------
28  * Spinner.java
29  * ------------
30  * (C) Copyright 2002-2004, by Object Refinery Limited.
31  *
32  * Original Author:  David Gilbert (for Object Refinery Limited);
33  * Contributor(s):   -;
34  *
35  * $Id $
36  *
37  * Changes
38  * -------
39  * 14-Oct-2002 : Version 1 (DG);
40  *
41  */
42 
43 package org.jfree.ui;
44 
45 import java.awt.BorderLayout;
46 import java.awt.GridLayout;
47 import java.awt.event.MouseEvent;
48 import java.awt.event.MouseListener;
49 import javax.swing.JPanel;
50 import javax.swing.JTextField;
51 import javax.swing.SwingConstants;
52 
53 /**
54  * A very basic spinner component, used for demo purposes only.
55  *
56  * @author David Gilbert
57  */
58 public class Spinner extends JPanel implements MouseListener {
59 
60     /** The current value. */
61     private int value;
62 
63     /** The text field displaying the value. */
64     private JTextField textField;
65 
66     /** The arrow button panel. */
67     private JPanel buttonPanel;
68 
69     /** The up button. */
70     private ArrowPanel upButton;
71 
72     /** The down button. */
73     private ArrowPanel downButton;
74 
75     /**
76      * Creates a new spinner.
77      *
78      * @param value  the initial value.
79      */
Spinner(final int value)80     public Spinner(final int value) {
81         super(new BorderLayout());
82         this.value = value;
83         this.textField = new JTextField(Integer.toString(this.value));
84         this.textField.setHorizontalAlignment(SwingConstants.RIGHT);
85         add(this.textField);
86         this.buttonPanel = new JPanel(new GridLayout(2, 1, 0, 1));
87         this.upButton = new ArrowPanel(ArrowPanel.UP);
88         this.upButton.addMouseListener(this);
89         this.downButton = new ArrowPanel(ArrowPanel.DOWN);
90         this.downButton.addMouseListener(this);
91         this.buttonPanel.add(this.upButton);
92         this.buttonPanel.add(this.downButton);
93         add(this.buttonPanel, BorderLayout.EAST);
94     }
95 
96     /**
97      * Returns the current value.
98      *
99      * @return the current value.
100      */
getValue()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      */
mouseClicked(final MouseEvent e)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      */
mouseEntered(final MouseEvent e)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      */
mouseExited(final MouseEvent e)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      */
mousePressed(final MouseEvent e)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      */
mouseReleased(final MouseEvent e)155     public void mouseReleased(final MouseEvent e) {
156         // ignored
157     }
158 
159 }
160