perm_button.java

/*

   perm_button.java

   Description.
   
   Created: 20 January 1997

   Module By: Erik Grostic
              Jonathan Abbey

   -----------------------------------------------------------------------
            
   Ganymede Directory Management System
 
   Copyright (C) 1996 - 2005
   The University of Texas at Austin

   Contact information

   Author Email: ganymede_author@arlut.utexas.edu
   Email mailing list: ganymede@arlut.utexas.edu

   US Mail:

   Computer Science Division
   Applied Research Laboratories
   The University of Texas at Austin
   PO Box 8029, Austin TX 78713-8029

   Telephone: (512) 835-3200

   This program 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.

   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

*/

package arlut.csd.ganymede.client;

import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Hashtable;

import javax.swing.JButton;

import arlut.csd.Util.TranslationService;
import arlut.csd.ganymede.rmi.perm_field;

/*------------------------------------------------------------------------------
                                                                           class 
                                                                     perm_button

------------------------------------------------------------------------------*/

class perm_button extends JButton implements ActionListener {

  static final boolean debug = false;

  /**
   * TranslationService object for handling string localization in the
   * Ganymede client.
   */

  static final TranslationService ts = TranslationService.getTranslationService("arlut.csd.ganymede.client.perm_button");

  perm_field field;
  boolean enabled;
  Hashtable basehash;
  gclient gc;
  String title;
  perm_editor editor = null;
  boolean isActiveAlready = false;

  /* -- */
  
  /**
   *
   * perm_button constructor
   *
   * @param field What field are we going to edit permissions for?
   * @param enabled If true, will allow editing of the permission matrix
   * @param justShowUser Should be false when editing the self-permissions object
   *
   */

  public perm_button (perm_field field, 
                      boolean enabled, 
                      gclient gc,
                      boolean justShowUser,
                      String title)
    {
      if (enabled)
        {
          // "Edit Permissions"
          setText(ts.l("init.edit"));
        }
      else
        {
          // "View Permissions"
          setText(ts.l("init.view"));
        }
      
      this.field = field;
      this.enabled = enabled;
      this.gc = gc;
      this.title = title;
      
      addActionListener(this);
    }
  
  /**
   * When clicked, this button invokes an instance of the permissions
   * editor class.
   */
  
  public void actionPerformed(ActionEvent e)
  {
    if ((e.getSource() == this))
      {
        if (debug)
          {
            System.out.println("Edit Button was pushed- table not selected");
          }
          
        // Need to take care of accidental double clicks resulting
        // in two or more instances of perm_editor being
        // created. Even though perm_editor is modal, there is a
        // small gap in time between clicking the perm button and
        // the modal state taking effect- enough time for multiple
        // clicks on the button to create multiple editors.

        if ((editor == null) || (!editor.isActiveEditor())) 
          { 
            Frame parent = new Frame();

            // "Permissions Editor: {0}"
            editor = new perm_editor(field,
                                     enabled, gc,
                                     parent,
                                     ts.l("actionPerformed.title", title));
            
            if (debug)
              {
                System.out.println("Editor Created by perm button");
              }
          } 
        else 
          {
            if (debug)
              {
                System.out.println("An editor already exists- new one not created");
              }
          }
      }
  }

  /**
   * Calling this method makes this component get rid of any secondary
   * windows and to do some gc reference clearing.
   */

  public synchronized void unregister()
  {
    if (editor != null)
      {
        editor.cleanUp();
        editor = null;
      }

    gc = null;
    basehash = null;
    field = null;
  }
}