org.pietschy.wizard.HelpAction Maven / Gradle / Ivy

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/**
 * Wizard Framework
 * Copyright 2004 - 2005 Andrew Pietsch
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * $Id: HelpAction.java,v 1.3 2005/05/16 23:06:57 pietschy Exp $
 */

package org.pietschy.wizard;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.*;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;

/**
 *
 */
class HelpAction
extends AbstractAction
{
   private Wizard wizard;
   private HelpBroker broker;

   protected HelpAction(Wizard wizard)
   {
      super(I18n.getString("help.text"));
      this.wizard = wizard;
      putValue(Action.MNEMONIC_KEY, new Integer(I18n.getMnemonic("help.mnemonic")));
      wizard.addPropertyChangeListener("helpBroker", new PropertyChangeListener()
      {
         public void propertyChange(PropertyChangeEvent evt)
         {
            configureState();
         }
      });

      configureState();
   }

   public void
   actionPerformed(ActionEvent e)
   {
      HelpBroker helpBroker = wizard.getHelpBroker();

      if (helpBroker != null)
         helpBroker.activateHelp(wizard, wizard.getModel());
   }

   private void
   configureState()
   {
      setEnabled(wizard.getHelpBroker() != null);
   }
}