// **********************************************************************
//
// Copyright (c) 2003-2005 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
package IceGridGUI.LiveDeployment;

import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;

import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;


import IceGrid.*;
import IceGridGUI.*;

class NodeEditor extends Editor
{
    NodeEditor()
    {
	_hostname.setEditable(false);
	_os.setEditable(false);
	_machineType.setEditable(false);
	_loadAverage.setEditable(false);

	Action refresh = new AbstractAction("Refresh")
	    {
		public void actionPerformed(ActionEvent e) 
		{
		    _target.showLoad();
		}
	    };
	refresh.putValue(Action.SHORT_DESCRIPTION, 
			"Fetch the latest values from this IceGrid Node");
	_refreshButton = new JButton(refresh);
    }

    void show(Node node)
    {
	_target = node;

	NodeInfo info = node.getStaticInfo();
	
	if(info == null)
	{
	    _hostname.setText("Unknown");
	    _os.setText("Unknown");
	    _machineType.setText("Unknown");
	    _loadAverageLabel.setText("Load Average");
	    _loadAverage.setText("Unknown");
	}
	else
	{
	    _hostname.setText(info.hostname);
	    _os.setText(info.os + " " + info.release + " " + info.version);
	    _machineType.setText(info.machine + " with " + 
				 info.nProcessors 
				 + " CPU" 
				 + (info.nProcessors >= 2 ? "s" : ""));
	
	    if(node.isRunningWindows())
	    {
		_loadAverageLabel.setText("CPU Usage");
		_loadAverage.setToolTipText(
		    "CPU usage in the past 1 min, 5 min and 15 min period");
	    }
	    else
	    {
		_loadAverageLabel.setText("Load Average");
		_loadAverage.setToolTipText(
		    "Load average in the past 1 min, 5 min and 15 min period");
	    }
	    _loadAverage.setText("Refreshing...");
	    node.showLoad();
	}

	_loadFactor.setSortedMap(node.getLoadFactors());	
    }
    
    void setLoad(String load, Node node)
    {
	if(node == _target)
	{
	    _loadAverage.setText(load);
	}
	//
	// Otherwise, we've already moved to another node
	// 
    }

    protected void appendProperties(DefaultFormBuilder builder)
    {
	builder.appendSeparator("System Information");
	
	builder.append("Hostname");
	builder.append(_hostname, 3);
	builder.nextLine();
	builder.append("Operating System");
	builder.append(_os, 3);
	builder.nextLine();
	builder.append("Machine Type");
	builder.append(_machineType, 3);
	builder.append(_loadAverageLabel, _loadAverage);
	builder.append(_refreshButton);
	builder.nextLine();

	builder.appendSeparator("Configuration");

	builder.append("Load Factor");
	builder.nextLine();

	builder.append("");
	builder.nextLine();

	builder.append("");
	builder.nextLine();

	builder.append("");
	builder.nextRow(-6);
	CellConstraints cc = new CellConstraints();
	JScrollPane scrollPane = new JScrollPane(_loadFactor);
	builder.add(scrollPane, 
		    cc.xywh(builder.getColumn(), builder.getRow(), 3, 7));
	builder.nextRow(6);
	builder.nextLine();
    }

    protected void buildPropertiesPanel()
    {
	super.buildPropertiesPanel();
	_propertiesPanel.setName("Node Properties");
    }

    private JTextField _hostname = new JTextField(20);
    private JTextField _os = new JTextField(20);
    private JTextField _machineType = new JTextField(20);
    private JLabel _loadAverageLabel = new JLabel();
    private JTextField _loadAverage = new JTextField(20);
    private JButton _refreshButton;

    private TableField _loadFactor = new TableField("Application", "Value");

    private Node _target;
}