/*
 * StatusPanel.java
 * 
 * Copyright (c) 2003-2004 Digi International
 * This program and the information contained in it is confidential and
 * proprietary to Digi International and may not be used, copied, or re-
 * produced without the prior written permission of Digi International.
 * 
 */

package com.digi.config.ui;

import com.digi.config.core.*;
import com.digi.config.util.*;

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;

/** 
 * This class is a panel that shows status information for the application.
 * It contains a text area for status messages as well as a tray area in which
 * UI components (such as images, buttons, etc.) can be added.
 * This is currently implemented as a singleton.
 */
public class StatusPanel extends JPanel {
    private static StatusPanel singletonSelf = null; // Singleton instance

    private JLabel statusLine;
    private JPanel trayPanel;

    /**
     * Get the status panel.
     * @return the singleton instance of the status panel.
     */
    public static StatusPanel getInstance() {
        if (singletonSelf == null) {
            singletonSelf = new StatusPanel();
        }

        return singletonSelf;
    }

    /**
     * Set the status text in the message area.
     * @param msg the message text.
     */
    public void setStatusText(String msg) {
        if (msg != null) {
            statusLine.setText(msg);
            statusLine.paintImmediately(statusLine.getVisibleRect());
        }
    }

    /**
     * Get the status text in the message area.
     * @return the message text.
     */
    public String getStatusText() {
        return statusLine.getText();
    }

    /**
     * Add a component to the tray area.
     * @param comp the UI component to add to the tray.
     */
    public void addTrayComponent(Component comp) {
        if (comp != null) {
            trayPanel.add(comp);
            statusLine.paintImmediately(statusLine.getVisibleRect());
        }
    }


    /**
     * ctor - private to enforce singleton.
     */
    private StatusPanel() {
        setLayout(new BorderLayout());
        statusLine = new JLabel(ConfigResource.getUiRbString("ReadyStatus"));
        trayPanel = new JPanel();
        add(statusLine, BorderLayout.CENTER);
        add(trayPanel, BorderLayout.EAST);
    }

}