[Bprocessor-commit] gui/src/net/sourceforge/bprocessor/gui/actions EditMenuListener.java, NONE, 1.1

[rimestad <rim...@us...>]

Update of /cvsroot/bprocessor/gui/src/net/sourceforge/bprocessor/gui/actions
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv11751/src/net/sourceforge/bprocessor/gui/actions

Added Files:
	EditMenuListener.java 
Log Message:
implemented copy, paste and delete in the menu and added a listener that enables and disables them, according to the content of the selection... Name is a bit misleading cause the object ain't listening to the editmenu, but the selection.

--- NEW FILE: EditMenuListener.java ---
//---------------------------------------------------------------------------------
// $Id: EditMenuListener.java,v 1.1 2006/12/03 17:53:17 rimestad Exp $
//
// Copyright (c) 2005      The BProcessor Team (http://bprocessor.sourceforge.net) 
// Released under the Lesser GNU Public License v2.1
//---------------------------------------------------------------------------------

package net.sourceforge.bprocessor.gui.actions;

import java.awt.Component;

import javax.swing.JMenu;
import javax.swing.JMenuItem;

import net.sourceforge.bprocessor.model.Observer;
import net.sourceforge.bprocessor.model.Selection;

/**
 *  The Listener that enable and disable the elements in the edit menu
 *  That a JManu, but assume that the menu is the editmenu layout wise
 */
public class EditMenuListener implements Observer {

  /** the corrosponding menu */
  private JMenu menu;

  /**
   * Constructor
   * @param menu The edit menu object
   */
  public EditMenuListener(JMenu menu) {
    this.menu = menu;
  }
  
  /**
   * Called when the Selection object changes
   * @param entity The changed object (The selection list in this case)
   */
  public void update(Object entity) {
    if (entity instanceof Selection) {
      Selection s = (Selection) entity;
      if (!s.isEmpty()) {
        Component[] c = menu.getMenuComponents();
        ((JMenuItem)c[3]).setEnabled(true);
        ((JMenuItem)c[4]).setEnabled(true);
        ((JMenuItem)c[5]).setEnabled(true);
        ((JMenuItem)c[7]).setEnabled(true);
      } else {
        Component[] c = menu.getMenuComponents();
        ((JMenuItem)c[3]).setEnabled(false);
        ((JMenuItem)c[4]).setEnabled(false);
        ((JMenuItem)c[5]).setEnabled(false);
        ((JMenuItem)c[7]).setEnabled(false);
      }
    }
  }
}