src/java/org/tsho/dmc2/ui/components/DmcAction.java

   1 /*
   2  * iDMC the interactive Dynamical Model Calculator simulates and performs
   3  * graphical and numerical analysis of systems of differential and
   4  * difference equations.
   5  *
   6  * Copyright (C) 2004 Marji Lines and Alfredo Medio.
   7  *
   8  * Written by Daniele Pizzoni <auouo@tin.it>.
   9  *
  10  *
  11  * The software program was developed within a research project financed
  12  * by the Italian Ministry of Universities, the Universities of Udine and
  13  * Ca'Foscari of Venice, the Friuli-Venezia Giulia Region.
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or any
  18  * later version.
  19  *
  20  * This program is distributed in the hope that it will be useful, but
  21  * WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  23  * General Public License for more details.
  24  */
  25 package org.tsho.dmc2.ui.components;
  26
  27 import javax.swing.AbstractAction;
  28
  29
  30 /**
  31  * An action with a visibility property. Use with DmcMenuItem & DmcButton
  32  */
  33 public abstract class DmcAction extends AbstractAction {
  34     public static final String VISIBILITY_KEY = "visible";
  35
  36         public DmcAction() {
  37             super();
  38
  39             putValue(VISIBILITY_KEY, new Boolean(true));
  40         }
  41
  42     public void setVisible(final boolean visible) {
  43
  44         Boolean oldValue = (Boolean) this.getValue(VISIBILITY_KEY);
  45
  46         if (visible == oldValue.booleanValue()) {
  47             return;
  48         }
  49
  50         Boolean b = new Boolean(visible);
  51         putValue(VISIBILITY_KEY, b);
  52
  53         firePropertyChange(VISIBILITY_KEY, oldValue, b);
  54     }
  55
  56     public boolean isVisible() {
  57         return ((Boolean) getValue(VISIBILITY_KEY)).booleanValue();
  58     }
  59  }