001 /* 002 * Copyright (C) 2008-2010 by Holger Arndt 003 * 004 * This file is part of the Universal Java Matrix Package (UJMP). 005 * See the NOTICE file distributed with this work for additional 006 * information regarding copyright ownership and licensing. 007 * 008 * UJMP is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Lesser General Public License as 010 * published by the Free Software Foundation; either version 2 011 * of the License, or (at your option) any later version. 012 * 013 * UJMP is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 016 * GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public 019 * License along with UJMP; if not, write to the 020 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 021 * Boston, MA 02110-1301 USA 022 */ 023 024 package org.ujmp.jmathplot; 025 026 import java.awt.event.ComponentEvent; 027 import java.awt.event.ComponentListener; 028 029 import javax.swing.JPanel; 030 031 import org.ujmp.core.Matrix; 032 import org.ujmp.gui.interfaces.CanBeRepainted; 033 import org.ujmp.gui.util.GraphicsExecutor; 034 035 public abstract class AbstractJMathPlotPanel extends JPanel implements 036 ComponentListener, CanBeRepainted { 037 private static final long serialVersionUID = 2083997325942788081L; 038 039 private Matrix matrix = null; 040 041 private JPanel panel = null; 042 043 public Matrix getMatrix() { 044 return matrix; 045 } 046 047 public AbstractJMathPlotPanel(Matrix matrix) { 048 this.matrix = matrix; 049 addComponentListener(this); 050 } 051 052 public void changeState() { 053 if (panel == null && isShowing()) { 054 GraphicsExecutor.scheduleUpdate(this); 055 } else if (panel != null && !isShowing()) { 056 destroy(); 057 } 058 } 059 060 public void destroy() { 061 remove(panel); 062 panel = null; 063 } 064 065 066 public void componentHidden(ComponentEvent e) { 067 changeState(); 068 } 069 070 071 public void componentMoved(ComponentEvent e) { 072 changeState(); 073 } 074 075 076 public void componentResized(ComponentEvent e) { 077 changeState(); 078 } 079 080 081 public void componentShown(ComponentEvent e) { 082 changeState(); 083 } 084 085 public void setPanel(JPanel panel) { 086 this.panel = panel; 087 } 088 089 }