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 * DetailEditor.java 029 * ----------------- 030 * (C) Copyright 2004, by Thomas Morgner and Contributors. 031 * 032 * Original Author: Thomas Morgner; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * $Id: FloatingButtonEnabler.java,v 1.3 2005/10/18 13:18:34 mungady Exp $ 036 * 037 * Changes 038 * ------- 039 * 07-Jun-2004 : Added JCommon header (DG); 040 * 041 */ 042 043package org.jfree.ui; 044 045import java.awt.event.MouseAdapter; 046import java.awt.event.MouseEvent; 047 048import javax.swing.AbstractButton; 049 050/** 051 * Enables a button to have a simple floating effect. The border of the button is only visible, 052 * when the mouse pointer is floating over the button. 053 * 054 * @author Thomas Morgner 055 */ 056public final class FloatingButtonEnabler extends MouseAdapter { 057 058 /** A single instance. */ 059 private static FloatingButtonEnabler singleton; 060 061 /** 062 * Default constructor. 063 */ 064 private FloatingButtonEnabler() { 065 // nothing required 066 } 067 068 /** 069 * Returns a default instance of this enabler. 070 * 071 * @return a shared instance of this class. 072 */ 073 public static FloatingButtonEnabler getInstance() { 074 if (singleton == null) { 075 singleton = new FloatingButtonEnabler(); 076 } 077 return singleton; 078 } 079 080 /** 081 * Adds a button to this enabler. 082 * 083 * @param button the button. 084 */ 085 public void addButton(final AbstractButton button) { 086 button.addMouseListener(this); 087 button.setBorderPainted(false); 088 } 089 090 /** 091 * Removes a button from the enabler. 092 * 093 * @param button the button. 094 */ 095 public void removeButton(final AbstractButton button) { 096 button.addMouseListener(this); 097 button.setBorderPainted(true); 098 } 099 100 /** 101 * Triggers the drawing of the border when the mouse entered the button area. 102 * 103 * @param e the mouse event. 104 */ 105 public void mouseEntered(final MouseEvent e) { 106 if (e.getSource() instanceof AbstractButton) { 107 final AbstractButton button = (AbstractButton) e.getSource(); 108 if (button.isEnabled()) { 109 button.setBorderPainted(true); 110 } 111 } 112 } 113 114 /** 115 * Disables the drawing of the border when the mouse leaves the button area. 116 * 117 * @param e the mouse event. 118 */ 119 public void mouseExited(final MouseEvent e) { 120 if (e.getSource() instanceof AbstractButton) { 121 final AbstractButton button = (AbstractButton) e.getSource(); 122 button.setBorderPainted(false); 123 if (button.getParent() != null) 124 { 125// button.getParent().repaint(button.getX(), button.getY(), 126// button.getWidth(), button.getHeight()); 127 button.getParent().repaint(); 128 } 129 } 130 } 131 132}