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 043package org.jfree.ui; 044 045import java.awt.BorderLayout; 046import java.awt.GridLayout; 047import java.awt.event.MouseEvent; 048import java.awt.event.MouseListener; 049 050import javax.swing.JPanel; 051import javax.swing.JTextField; 052import javax.swing.SwingConstants; 053 054/** 055 * A very basic spinner component, used for demo purposes only. 056 * 057 * @author David Gilbert 058 */ 059public 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}