package com.ericsson.tic.vi;

import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.net.SocketException;

/**
 * A specialized gui component which creates a toolbar with a drop down list
 * and a button. The drop down list contains all commands specified in the XML
 * interface. The button pauses the GUI.
 *
 * @author	Sami Matilainen
 * @version 1.0 (2008-12-04)
 */
public class ToolbarPanel extends JPanel implements ActionListener {
	
	/** Subpanel used for layout. */
	private JPanel eastPanel, centerPanel, westPanel;
	
	/** Button. */
	private JButton runButton, pauseButton, resetButton;
	
	/** A combo box. */
	private JComboBox comboBox;
	
	/** A tmporary list of scenarios. */
	private String[] commandNames;
	
	/** A lebel which provides feedback to the users. */
	private JLabel feedbackLabel;
	
	/**
	 * Creates a Toolbar with a drop down list and a button. The drop down
	 * list contains all commands specified in the XML interface.
	 * The button pauses the GUI.
	 */
	public ToolbarPanel() {
		
		this.setLayout(new BorderLayout());
		
		this.setPreferredSize(new Dimension(20, 20));
		this.setMaximumSize(new Dimension(20, 20));
		
		westPanel = new JPanel();
		eastPanel = new JPanel();
		centerPanel = new JPanel();
		
		commandNames = new String[XMLInterface.totalCommands+1];
		
		commandNames[0] = "Choose command";
		
		for (int i = 0; i < VI.commandArr.length; i++) {
			
			commandNames[i+1] = VI.commandArr[i].name;
			
		}
		
		comboBox = new JComboBox(commandNames);
		comboBox.setPrototypeDisplayValue("WWWWWWWWWWWW");
		comboBox.setSelectedIndex(0);
        comboBox.addActionListener(this);
		comboBox.setActionCommand("comboBox");
		
		feedbackLabel = new JLabel("");
		
		// the Run and reset buttons have been removed based on user feedback
		// Having a drop down menu + run button was counterintuitive
		// a feedback label provides adecuate feedback to users
		// resetting the master system can be done by providing a reset command
		// reset was a specific requirement for the TIC-project
		
		//runButton = new JButton("Run");
		//runButton.addActionListener(this);
		//runButton.setActionCommand("run");
		
		pauseButton = new JButton("Pause GUI");
		pauseButton.addActionListener(this);
		pauseButton.setActionCommand("pause");
		
		//resetButton = new JButton("Reset");
		//resetButton.addActionListener(this);
		//resetButton.setActionCommand("reset");
		
		westPanel.add(comboBox);
		westPanel.add(feedbackLabel);
		//westPanel.add(runButton);
		
		eastPanel.add(pauseButton);
		//eastPanel.add(resetButton);
		
		this.add(westPanel, BorderLayout.WEST);
		this.add(centerPanel, BorderLayout.CENTER);
		this.add(eastPanel, BorderLayout.EAST);
		
	}
	
	/**
	 * Called when an ActionEvent is triggered.
	 *
	 * @param e The ActionEvent which triggered the event.
	 */
	public void actionPerformed(ActionEvent e) {
		
		String command = (String)comboBox.getSelectedItem();
		
		String message = "";
		
		if ("comboBox".equals(e.getActionCommand())) {
			
			for (int i = 0; i < VI.commandArr.length; i++) {
				if (command.equals(commandNames[i+1])) {
					message = VI.commandArr[i].prefix +
						" " + VI.commandArr[i].message;
				}
			}
			
			/// send any settings/configuration needed for running a
			/// "scenario" to the database here
			
			feedbackLabel.setText("Sent cmd: '" + message + "'");
			
			if (!message.equals("")) {
				try {
					NetCom.sendMessage(message, VI.udpOutHost, VI.udpOutPort);
				} catch (SocketException ex) {
					ex.printStackTrace();
				}
			}
			
		} else if ("pause".equals(e.getActionCommand())) {
			
			VI.pauseGUI = !VI.pauseGUI;
			
			if (VI.pauseGUI) {
				pauseButton.setText("Resume");
			} else {
				pauseButton.setText("Pause GUI");
			}
		
		}
		
	}
	
}