Source for org.jfree.ui.Spinner

   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:      */
  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:      */
 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: }