package prog02;

import javax.swing.*;

/**
 *
 * @author vjm
 */
public class GUI implements UserInterface {

	/** Creates a new instance of GUI */
	public GUI() {
	}

	/** presents set of commands for user to choose one of
        @param commands the commands to choose from
        @return the index of the command in the array
	 */
	public int getCommand (String[] commands) {
		return JOptionPane.showOptionDialog
				(null, // No parent
						"Select a Command", // Prompt message
						"PhoneDirectory", // Window title
						JOptionPane.YES_NO_CANCEL_OPTION, // Option type
						JOptionPane.QUESTION_MESSAGE, // Message type
						null, // Icon
						commands, // List of commands
						commands[commands.length - 1]);
	}

	/** tell the user something
	@param message string to print out to the user
	 */
	public void sendMessage (String message) {
		JOptionPane.showMessageDialog(null, message);
	}

	/** prompts the user for a string
	@param prompt the request
	@return what the user enters, null if nothing
	 */
	public String getInfo (String prompt) {
		return JOptionPane.showInputDialog(prompt);
	}

	public static void main (String[] args) {
		UserInterface ui = new GUI();
		String[] commands = { "hello", "how", "are", "you" };
		int choice = ui.getCommand(commands);
		ui.sendMessage("You chose " + choice);
		String result = ui.getInfo("say something");
		ui.sendMessage("You said " + result);
	}
}