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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: * DetailEditor.java 29: * ----------------- 30: * (C) Copyright 2004, by Thomas Morgner and Contributors. 31: * 32: * Original Author: Thomas Morgner; 33: * Contributor(s): David Gilbert (for Object Refinery Limited); 34: * 35: * $Id: FloatingButtonEnabler.java,v 1.4 2007/11/02 17:50:36 taqua Exp $ 36: * 37: * Changes 38: * ------- 39: * 07-Jun-2004 : Added JCommon header (DG); 40: * 41: */ 42: 43: package org.jfree.ui; 44: 45: import java.awt.event.MouseAdapter; 46: import java.awt.event.MouseEvent; 47: import javax.swing.AbstractButton; 48: 49: /** 50: * Enables a button to have a simple floating effect. The border of the button is only visible, 51: * when the mouse pointer is floating over the button. 52: * 53: * @author Thomas Morgner 54: */ 55: public final class FloatingButtonEnabler extends MouseAdapter { 56: 57: /** A single instance. */ 58: private static FloatingButtonEnabler singleton; 59: 60: /** 61: * Default constructor. 62: */ 63: private FloatingButtonEnabler() { 64: // nothing required 65: } 66: 67: /** 68: * Returns a default instance of this enabler. 69: * 70: * @return a shared instance of this class. 71: */ 72: public static FloatingButtonEnabler getInstance() { 73: if (singleton == null) { 74: singleton = new FloatingButtonEnabler(); 75: } 76: return singleton; 77: } 78: 79: /** 80: * Adds a button to this enabler. 81: * 82: * @param button the button. 83: */ 84: public void addButton(final AbstractButton button) { 85: button.addMouseListener(this); 86: button.setBorderPainted(false); 87: } 88: 89: /** 90: * Removes a button from the enabler. 91: * 92: * @param button the button. 93: */ 94: public void removeButton(final AbstractButton button) { 95: button.addMouseListener(this); 96: button.setBorderPainted(true); 97: } 98: 99: /** 100: * Triggers the drawing of the border when the mouse entered the button area. 101: * 102: * @param e the mouse event. 103: */ 104: public void mouseEntered(final MouseEvent e) { 105: if (e.getSource() instanceof AbstractButton) { 106: final AbstractButton button = (AbstractButton) e.getSource(); 107: if (button.isEnabled()) { 108: button.setBorderPainted(true); 109: } 110: } 111: } 112: 113: /** 114: * Disables the drawing of the border when the mouse leaves the button area. 115: * 116: * @param e the mouse event. 117: */ 118: public void mouseExited(final MouseEvent e) { 119: if (e.getSource() instanceof AbstractButton) { 120: final AbstractButton button = (AbstractButton) e.getSource(); 121: button.setBorderPainted(false); 122: if (button.getParent() != null) 123: { 124: // button.getParent().repaint(button.getX(), button.getY(), 125: // button.getWidth(), button.getHeight()); 126: button.getParent().repaint(); 127: } 128: } 129: } 130: 131: }