package horstmann.ch05_mailgui;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;

/**
   Presents a phone GUI for the voice mail system.
 */
public class Telephone
{
	/**
      Constructs a telephone with a speaker, keypad,
      and microphone.
	 */
	public Telephone()
	{
		JPanel speakerPanel = new JPanel();
		speakerPanel.setLayout(new BorderLayout());
		speakerPanel.add(new JLabel("Speaker:"),
				BorderLayout.NORTH);
		speakerField = new JTextArea(10, 25);
		speakerPanel.add(speakerField,
				BorderLayout.CENTER);

		String keyLabels = "123456789*0#";
		JPanel keyPanel = new JPanel();
		keyPanel.setLayout(new GridLayout(4, 3));
		for (int i = 0; i < keyLabels.length(); i++)
		{
			final String label = keyLabels.substring(i, i + 1);
			JButton keyButton = new JButton(label);
			keyPanel.add(keyButton);
			keyButton.addActionListener(event -> connect.dial(label));
		}

		final JTextArea microphoneField = new JTextArea(10,25);

		JButton speechButton = new JButton("Send speech");
		speechButton.addActionListener(event -> {
			connect.record(microphoneField.getText());
			microphoneField.setText("");
		});

		JButton hangupButton = new JButton("Hangup");
		hangupButton.addActionListener(event -> connect.hangup());

		JPanel buttonPanel = new JPanel();
		buttonPanel.add(speechButton);
		buttonPanel.add(hangupButton);

		JPanel microphonePanel = new JPanel();
		microphonePanel.setLayout(new BorderLayout());
		microphonePanel.add(new JLabel("Microphone:"),
				BorderLayout.NORTH);
		microphonePanel.add(microphoneField, BorderLayout.CENTER);
		microphonePanel.add(buttonPanel, BorderLayout.SOUTH);

		JFrame frame = new JFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.add(speakerPanel, BorderLayout.NORTH);
		frame.add(keyPanel, BorderLayout.CENTER);
		frame.add(microphonePanel, BorderLayout.SOUTH);

		frame.pack();
		frame.setVisible(true);
	}

	/**
      Give instructions to the mail system user.
	 */
	public void speak(String output)
	{
		speakerField.setText(output);
	}

	public void run(Connection c)
	{
		connect = c;
	}

	private JTextArea speakerField;
	private Connection connect;
}