import java.awt.*;
import javax.swing.event.*;
import javax.swing.*;
import window.JWindowFrame;
import java.awt.event.*;

public class AssignmentOne extends JWindowFrame
{
	private Container c;

	private ActionHandler ah;

	private JTextArea textDisplay;

	private JCheckBox bold;

	private JCheckBox italic;

	private JComboBox fontSizeCombo;

	private JComboBox fontFaceCombo;

	private MenuBar menuBar;

	private Menu fileMenu, formatMenu;

	private MenuItem exitMenuItem, colourMenuItem;

	private Container dlg_c;

	private JPanel colorPanel;

	private String colorNames[] =
	{
			"Red: ", "Green: ", "Blue: "
	};

	private Label labels[] = new Label[3];

	private JSlider slider[] = new JSlider[3];

	private JButton saveColor;

	private JWindowFrame dlg;

	public AssignmentOne()
	{
		c = getContentPane();
		ah = new ActionHandler();

		GridBagLayout gbLayout = new GridBagLayout();
		c.setLayout(gbLayout);

		JLabel faceLabel = new JLabel("Font Face: ");
		String faceComboLabel[] =
		{
				"Serif", "SansSerif", "Monospaced"
		};
		fontFaceCombo = new JComboBox(faceComboLabel);

		JLabel sizeLabel = new JLabel("Font Size: ");
		String sizeComboLabel[] =
		{
				"8", "10", "12", "15", "18", "24", "36", "48"
		};
		fontSizeCombo = new JComboBox(sizeComboLabel);

		bold = new JCheckBox("Bold");
		italic = new JCheckBox("Italic");

		textDisplay = new JTextArea("The quick brown fox jumps over the lazy dog");
		textDisplay.setEditable(true);
		textDisplay.setLineWrap(true);

		menuBar = new MenuBar();

		fileMenu = new Menu("File");
		formatMenu = new Menu("Format");

		fileMenu.add(exitMenuItem = new MenuItem("Exit"));
		exitMenuItem.addActionListener(ah);

		formatMenu.add(colourMenuItem = new MenuItem("Set Colour"));
		colourMenuItem.addActionListener(ah);

		menuBar.add(fileMenu);
		menuBar.add(formatMenu);

		setMenuBar(menuBar);

		fontFaceCombo.addActionListener(ah);
		fontSizeCombo.addActionListener(ah);
		bold.addActionListener(ah);
		italic.addActionListener(ah);

		// add components to grid

		GridBagConstraints constraints = new GridBagConstraints();

		// do not fill up the entire area
		constraints.fill = GridBagConstraints.NONE;
		// position permanently in the east side
		constraints.anchor = GridBagConstraints.EAST;
		// the labels remain a constant width when the window is resize
		constraints.weightx = 0;
		constraints.weighty = 0;
		addConstraints(faceLabel, constraints, 0, 0, 1, 1);
		addConstraints(sizeLabel, constraints, 0, 1, 1, 1);

		// combo box to expand horizontal in the grid
		constraints.fill = GridBagConstraints.HORIZONTAL;
		constraints.weightx = 0;
		constraints.weighty = 0;
		addConstraints(fontFaceCombo, constraints, 1, 0, 1, 1);
		addConstraints(fontSizeCombo, constraints, 1, 1, 1, 1);

		constraints.fill = GridBagConstraints.NONE;
		constraints.anchor = GridBagConstraints.CENTER;
		constraints.weightx = 0;
		constraints.weighty = 100;
		addConstraints(bold, constraints, 0, 2, 2, 1);
		addConstraints(italic, constraints, 0, 3, 2, 1);

		constraints.fill = GridBagConstraints.BOTH;
		constraints.weightx = 100;
		constraints.weighty = 0;
		addConstraints(textDisplay, constraints, 2, 0, 1, 4);

		setTitle("GridBagLayout Demo");
		setSize(400, 300);

		setVisible(true);
	}

	public void addConstraints(Component comp, GridBagConstraints constraints, int x, int y, int w, int h)
	{
		constraints.gridx = x;
		constraints.gridy = y;
		constraints.gridwidth = w;
		constraints.gridheight = h;
		c.add(comp, constraints);
	}

	public static void main(String args[])
	{
		new AssignmentOne();
	}

	public class ActionHandler implements ActionListener, ChangeListener
	{
		public void actionPerformed(ActionEvent e)
		{
			if (e.getSource() == exitMenuItem)
			{
				System.exit(0);
			}
			else if (e.getSource() == colourMenuItem)
			{
				if (dlg == null)
				{
					dlg = new JWindowFrame();
					dlg_c = dlg.getContentPane();
					JPanel sliderPanel = new JPanel();

					sliderPanel.setLayout(new GridLayout(0, 1));
					for (int i = 0; i < 3; i++)
					{
						labels[i] = new Label(colorNames[i] + 255);
						sliderPanel.add(labels[i]);
						slider[i] = new JSlider(SwingConstants.HORIZONTAL, 0, 255, 255);
						slider[i].setMinorTickSpacing(10);
						slider[i].setMajorTickSpacing(50);
						slider[i].setPaintTicks(true);
						slider[i].setPaintLabels(true);

						sliderPanel.add(slider[i]);
						slider[i].addChangeListener(this);
					}

					dlg_c.add(sliderPanel, BorderLayout.NORTH);

					colorPanel = new JPanel();
					colorPanel.setBackground(textDisplay.getForeground());
					dlg_c.add(colorPanel, BorderLayout.CENTER);

					saveColor = new JButton("Accept");
					saveColor.addActionListener(ah);
					dlg_c.add(saveColor, BorderLayout.SOUTH);

					dlg.setSize(500, 450);
					dlg.setTitle("Slider Demo");
				}

				dlg.setVisible(true);
			}
			else if (e.getSource() == saveColor)
			{
				textDisplay.setForeground(new Color(slider[0].getValue(), slider[1].getValue(), slider[2].getValue()));

				dlg.setVisible(false);
			}
			else
			{
				int fontStyle = Font.PLAIN;
				String fontFace = fontFaceCombo.getSelectedItem().toString();
				int fontSize = Integer.parseInt(fontSizeCombo.getSelectedItem().toString());

				if (bold.isSelected())
					fontStyle += Font.BOLD;
				if (italic.isSelected())
					fontStyle += Font.ITALIC;

				textDisplay.setFont(new Font(fontFace, fontStyle, fontSize));
			}
		}

		public void stateChanged(ChangeEvent e)
		{
			for (int i = 0; i < 3; i++)
				// slider component getValue method returns the slider value
				labels[i].setText(colorNames[i] + slider[i].getValue());

			// setting the colorPanel background using the RGB value
			colorPanel.setBackground(new Color(slider[0].getValue(), slider[1].getValue(), slider[2].getValue()));
		}
	}

}