/*
 *                 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 1997-2003 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.core.actions;


import org.openide.util.NbBundle;

import java.awt.*;
import javax.swing.UIManager;

/**
 * @author Radek Matous
 */

public class InitPanel extends javax.swing.JPanel implements org.openide.util.AsyncGUIJob {
    private javax.swing.JLabel initComponent;
    private OptionsAction.OptionsPanel oPanel;
    private static InitPanel defInstance;

    static InitPanel getDefault(OptionsAction.OptionsPanel oPanel) {
        if (defInstance == null) {
            defInstance = new InitPanel(oPanel);
        }
        return defInstance;
    }

    private InitPanel(OptionsAction.OptionsPanel oPanel) {
        super();
        this.oPanel = oPanel;        
        initComponents();
    }   

    protected void initComponents() {        
        if (!oPanel.isPrepared()) {
            initComponent = new javax.swing.JLabel(NbBundle.getMessage (InitPanel.class, "LBL_computing"));//NOI18N
            initComponent.setPreferredSize(new Dimension(850, 450));
            // avoid flicking ?
            Color c = UIManager.getColor ("Tree.background");
            if (c == null) {
                //GTK 1.4.2 will return null for Tree.background
                c = Color.WHITE;
            }
            initComponent.setBackground(c);    // NOI18N               
            initComponent.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);        
            initComponent.setOpaque(true);
            
            CardLayout card = new CardLayout();
            setLayout(card);            
            add(initComponent, "init");    // NOI18N
            card.show(this, "init"); // NOI18N        
            org.openide.util.Utilities.attachInitJob(this, this);
        } else {
            finished();  
        }
    }
    
    public void construct() {
        oPanel.prepareNodes();        
    }

    public void finished() {
        //initComponent.setBackground((Color) javax.swing.UIManager.getDefaults().get("Tree.background"));    // NOI18N
        add(oPanel, "ready");   // NOI18N                
        CardLayout card = (CardLayout) getLayout();
        card.show(this, "ready"); // NOI18N            
    }
}