Package net.sf.mzmine.util.components

Source Code of net.sf.mzmine.util.components.HelpButton

/*
* Copyright 2006-2012 The MZmine 2 Development Team
*
* This file is part of MZmine 2.
*
* MZmine 2 is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* MZmine 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* MZmine 2; if not, write to the Free Software Foundation, Inc., 51 Franklin St,
* Fifth Floor, Boston, MA 02110-1301 USA
*/

package net.sf.mzmine.util.components;

import javax.help.CSH;
import javax.help.HelpBroker;
import javax.swing.JButton;

import net.sf.mzmine.desktop.impl.MainWindow;
import net.sf.mzmine.desktop.impl.helpsystem.HelpImpl;
import net.sf.mzmine.desktop.impl.helpsystem.MZmineHelpMap;
import net.sf.mzmine.desktop.impl.helpsystem.MZmineHelpSet;
import net.sf.mzmine.main.MZmineCore;

/**
* This class extends JButton class to implement Help system generated
* automatically. This class permits to get the help system in a dialog modal
* window, and assign the HelpSystem Action Listener to this button.
*
*
*/
public class HelpButton extends JButton {

  /**
   * This constructor receives as parameter a help ID stored in HelpSet.
   *
   * @param helpID
   */
  public HelpButton(String helpID) {

    super("Help");

    MainWindow mainWindow = (MainWindow) MZmineCore.getDesktop();
    HelpImpl helpImp = mainWindow.getHelpImpl();

    if (helpImp == null) {
      setEnabled(false);
      return;
    }

    MZmineHelpSet hs = helpImp.getHelpSet();

    if (hs == null) {
      setEnabled(false);
      return;
    }

    MZmineHelpMap map = (MZmineHelpMap) hs.getLocalMap();

    if (!map.isValidID(helpID, hs)) {
      setEnabled(false);
      return;
    }

    HelpBroker hb = hs.createHelpBroker();
    hs.setHomeID(helpID);

    this.addActionListener(new CSH.DisplayHelpFromSource(hb));

  }

}
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