package demo;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JSeparator;
import javax.swing.border.BevelBorder;
import javax.swing.border.Border;
import javax.swing.plaf.basic.BasicBorders;

@SuppressWarnings("serial")
public class AdvancedGUIApp extends JFrame {

	// JPanels used in the UI
	JPanel jpSouth;
	JPanel jpEast;
	JPanel jpCenter;

	/**
	 * @param args not used
	 */
	public static void main(String[] args) {
		new AdvancedGUIApp();
	}

	// ctor - inits the UI, etc
	private AdvancedGUIApp() {
		initUI(); 			// init the main JFrame
		createMenu();		// put menus on it
		
		//TODO: add radio buttons and mouse listeners
		
		setVisible(true);	// make it visible
	}

	// main UI JFrame initialization - size, title, layout, etc
	private void initUI() {
		// create the containing window and set its size etc
		setTitle("SE1021 Advanced GUI Demo app"); 
		setSize(400, 300);
		setLocation(400, 400);
		setResizable(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		// Configure the content pane for a border layout
		Container canvas = getContentPane();
		canvas.setLayout(new BorderLayout(10,10));

		// create some panels to put in the various sections of the layout
		jpSouth = new JPanel( new FlowLayout(FlowLayout.LEFT));
		jpSouth.setBorder(BorderFactory.createBevelBorder(BevelBorder.RAISED));
		jpSouth.setPreferredSize(new Dimension(100, 50));

		jpEast = new JPanel( new FlowLayout(FlowLayout.LEFT));
		jpEast.setBorder(BorderFactory.createBevelBorder(BevelBorder.RAISED));
		jpEast.setPreferredSize(new Dimension(100, 50));

		jpCenter = new JPanel();
		jpCenter.setBorder(BorderFactory.createBevelBorder(BevelBorder.RAISED));

		// add the panels to the layout
		canvas.add(jpSouth, BorderLayout.SOUTH);
		canvas.add(jpEast, BorderLayout.EAST);
		canvas.add(jpCenter, BorderLayout.CENTER);
	}
	/**
	 * creates the menu and places it in the JFrame.
	 */
	private void createMenu() {
		// create the nested event handler that will respond to menu events
		MenuHandler mh = new MenuHandler();

		// JMenuBar holds menus
		JMenuBar menuBar = new JMenuBar();

		//File JMenu; holds File menu items
		JMenu fileMenu = new JMenu("File");
		JMenuItem jmiOpen = new JMenuItem("Open...");
		jmiOpen.setActionCommand("Open"); // redefine to remove "..."
		jmiOpen.addActionListener(mh);
		// add the JMenuItem to the JMenu
		fileMenu.add(jmiOpen);
		
		// now add the JMenu to the JMenuBar
		menuBar.add(fileMenu);

//TODO: add more Options and Tools menus
		
		// finally, add the JMenuBar to the JFrame
		setJMenuBar(menuBar);
	}

	/**
	 * Adds radio buttons to the window
	 *
	 */
	public void createRadioButtons() {

		// create the  event handler that will respond to button events
		RadioButtonHandler rbh = new RadioButtonHandler();

		JRadioButton rb1 = new JRadioButton("One");
		rb1.addActionListener(rbh);

		JRadioButton rb2 = new JRadioButton("Two");
		rb2.addActionListener(rbh);

		JRadioButton rb3 = new JRadioButton("Three");
		rb3.addActionListener(rbh);

		//TODO: Add a ButtonGroup to manage the automatic 
		// selection/deselection of radio buttons. Note: can be abused
		// to do the same for checkboxes

		// place the buttons in the East panel, with an ugly border
		Border border = new BasicBorders.RadioButtonBorder(Color.black, Color.blue, Color.yellow, Color.green);
		jpEast.setBorder(border);
		jpEast.add(rb1);
		jpEast.add(rb2);
		jpEast.add(rb3);
	}

	/**
	 * sets up event handling for the mouse
	 */
	private void createMouseListeners() {

		MouseHandler mh = new MouseHandler();
		jpCenter.addMouseListener( mh ); // listen for mouse presses and clicks
		//TODO: add a mouse motion listener
	}


	/**
	 * implementation of the ActionListener interface
	 * Handles action events from menus only
	 */
	private class MenuHandler implements ActionListener {
		/**
		 * This is the method called by the JVM when action events occur
		 */
		public void actionPerformed(ActionEvent event) {
			System.out.println( "The "+ event.getActionCommand() + " menu item was selected.");
		}
	}

	/**
	 * implementation of the ActionListener interface
	 * Handles action events from radio buttons only
	 */
	private class RadioButtonHandler implements ActionListener {
		/**
		 * This is the method called by the JVM when action events occur
		 */
		public void actionPerformed(ActionEvent event) {
			System.out.println( "The "+ event.getActionCommand() + " radio button was selected.");
		}
	}
	
	/**
	 * implementation of the MouseListener and MouseMotionListener interfaces
	 * Handles Mouse Events from the mouse
	 */
	private class MouseHandler implements MouseListener {
//TODO: add MouseMotionListener
		/**
		 * These are methods called by the JVM when mouse events occur
		 */
//MouseListener methods
		@Override
		public void mouseClicked(MouseEvent e) {
			System.out.println("mouseClicked at " + e.getX() + "," + e.getY() );
		}

		@Override
		public void mouseEntered(MouseEvent e) {
			System.out.println("mouseEntered at " + e.getX() + "," + e.getY() );
		}

		@Override
		public void mouseExited(MouseEvent e) {
			System.out.println("mouseExited at " + e.getX() + "," + e.getY() );
		}

		@Override
		public void mousePressed(MouseEvent e) {
			System.out.println("mousePressed at " + e.getX() + "," + e.getY() );
		}

		@Override
		public void mouseReleased(MouseEvent e) {
			System.out.println("mouseReleased at " + e.getX() + "," + e.getY() );
		}

	}
}