/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2001 Sun
 * Microsystems, Inc. All Rights Reserved.
 */
package org.netbeans.modules.debugger.ui;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.SwingUtilities;

import org.netbeans.api.debugger.DebuggerEngine;
import org.netbeans.api.debugger.DebuggerManager;
import org.netbeans.api.debugger.DebuggerManagerAdapter;
import org.netbeans.api.debugger.LazyDebuggerManagerListener;

import org.openide.awt.StatusDisplayer;
import org.openide.awt.ToolbarPool;
import org.openide.util.NbBundle;
import org.openide.windows.TopComponentGroup;
import org.openide.windows.WindowManager;


/**
 * This listener notifies about changes in the 
 * {@link DebuggerManager}.
 *
 * @author Jan Jancura
 */
public class DebuggerManagerListener extends DebuggerManagerAdapter {
    
    private boolean isOpened = false;
    
    public void propertyChange (PropertyChangeEvent evt) {
        if ( (DebuggerManager.getDebuggerManager ().getCurrentEngine () 
               != null) &&
             (!isOpened)
        ) {
            // Open debugger TopComponentGroup.
            SwingUtilities.invokeLater (new Runnable () {
                public void run () {
                    TopComponentGroup group = WindowManager.getDefault ().
                        findTopComponentGroup ("debugger"); // NOI18N
                    if (group != null) {
                        try {
                            group.open ();
                            if (ToolbarPool.getDefault ().
                                getConfiguration ().equals 
                                (ToolbarPool.DEFAULT_CONFIGURATION)
                            )
                                ToolbarPool.getDefault ().setConfiguration 
                                    ("Debugging");
                        } catch (Throwable e) {
                            e.printStackTrace();
                        }
                    }
                }
            });
            isOpened = true;
        }
        if ( (evt.getPropertyName () == DebuggerManager.PROP_DEBUGGER_ENGINES) 
                &&
             ((DebuggerEngine[]) evt.getNewValue ()).length == 0
        ) {
            // Close debugger TopComponentGroup.
            SwingUtilities.invokeLater (new Runnable () {
                public void run () {
                    TopComponentGroup group = WindowManager.getDefault ().
                        findTopComponentGroup ("debugger"); // NOI18N
                    if (group != null) {
                        group.close ();
                        if (ToolbarPool.getDefault ().getConfiguration ()
                            .equals ("Debugging")
                        )
                            ToolbarPool.getDefault ().setConfiguration 
                                (ToolbarPool.DEFAULT_CONFIGURATION);
                    }
                }
            });
            isOpened = false;
        }
    }
    
    public String[] getProperties () {
        return new String [] {
            DebuggerManager.PROP_DEBUGGER_ENGINES,
            DebuggerManager.PROP_CURRENT_ENGINE
        };
    }
    
}