envoy/src/main/java/envoy/client/ui/ChatWindow.java

package envoy.client.ui;

import java.awt.Color;
import java.awt.ComponentOrientation;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.io.IOException;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
import javax.xml.parsers.ParserConfigurationException;

import org.apache.http.client.ClientProtocolException;
import org.xml.sax.SAXException;

import envoy.client.EnvoyClient;
import envoy.schema.Message;
import envoy.schema.User;
import envoy.schema.Users;

/**
 * Project: <strong>envoy-client</strong><br>
 * File: <strong>ChatWindow.java</strong><br>
 * Created: <strong>28 Sep 2019</strong><br>
 * Author: <strong>Maximilian K&aumlfer &amp; Kai S. K. Engelbart</strong>
 */
public class ChatWindow extends JFrame {

	private static final long serialVersionUID = 6865098428255463649L;

	private JPanel				contentPane	= new JPanel();
	private static EnvoyClient	envoyClient	= new EnvoyClient();

	public DefaultListModel<String> listModel = new DefaultListModel<>();

	public ChatWindow() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 600, 800);
		setTitle("Envoy");
		setLocationRelativeTo(null);

		contentPane.setBackground(new Color(0, 0, 0));
		contentPane.setForeground(Color.white);
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		GridBagLayout gbl_contentPane = new GridBagLayout();
		gbl_contentPane.columnWidths	= new int[] { 1, 1, 1 };
		gbl_contentPane.rowHeights		= new int[] { 1, 1, 1 };
		gbl_contentPane.columnWeights	= new double[] { 0.3, 1.0, 0.1 };
		gbl_contentPane.rowWeights		= new double[] { 0.05, 1, 0.07 };
		contentPane.setLayout(gbl_contentPane);

		JList<String> elementList = new JList<>();
		elementList.setFocusTraversalKeysEnabled(false);

		elementList.setSelectionForeground(new Color(255, 255, 255));
		elementList.setSelectionBackground(new Color(102, 0, 153));
		elementList.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
		elementList.setForeground(new Color(255, 255, 255));
		elementList.setBackground(new Color(51, 51, 51));

		elementList.setModel(listModel);
		elementList.setFont(new Font("Arial", Font.PLAIN, 17));
		elementList.setFixedCellHeight(60);
		elementList.setBorder(new EmptyBorder(5, 5, 5, 5));

		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setForeground(new Color(0, 0, 0));
		scrollPane.setBackground(new Color(51, 51, 51));
		scrollPane.setViewportView(elementList);
		scrollPane.setBorder(null);

		GridBagConstraints gbc_scrollPane = new GridBagConstraints();
		gbc_scrollPane.fill			= GridBagConstraints.BOTH;
		gbc_scrollPane.gridwidth	= 2;
		gbc_scrollPane.gridx		= 1;
		gbc_scrollPane.gridy		= 1;

		gbc_scrollPane.insets = new Insets(10, 10, 10, 10);

		contentPane.add(scrollPane, gbc_scrollPane);

		// Message enter field
		JTextArea messageEnterTextfield = new JTextArea();
		messageEnterTextfield.setCaretColor(new Color(255, 255, 255));
		messageEnterTextfield.setForeground(new Color(255, 255, 255));
		messageEnterTextfield.setBackground(new Color(51, 51, 51));
		messageEnterTextfield.setLineWrap(true);
		messageEnterTextfield.setBorder(null);
		messageEnterTextfield.setFont(new Font("Arial", Font.PLAIN, 17));
		messageEnterTextfield.setBorder(new EmptyBorder(5, 5, 5, 5));

		GridBagConstraints gbc_moveSelectionMessageEnterTextfield = new GridBagConstraints();
		gbc_moveSelectionMessageEnterTextfield.fill		= GridBagConstraints.BOTH;
		gbc_moveSelectionMessageEnterTextfield.gridx	= 1;
		gbc_moveSelectionMessageEnterTextfield.gridy	= 2;

		gbc_moveSelectionMessageEnterTextfield.insets = new Insets(10, 10, 10, 10);

		contentPane.add(messageEnterTextfield, gbc_moveSelectionMessageEnterTextfield);

		// Post Button
		JButton postButton = new JButton("Post");
		postButton.setForeground(new Color(255, 255, 255));
		postButton.setBackground(new Color(102, 51, 153));
		postButton.setBorderPainted(false);

		GridBagConstraints gbc_moveSelectionPostButton = new GridBagConstraints();

		gbc_moveSelectionPostButton.fill	= GridBagConstraints.BOTH;
		gbc_moveSelectionPostButton.gridx	= 2;
		gbc_moveSelectionPostButton.gridy	= 2;

		gbc_moveSelectionPostButton.insets = new Insets(10, 10, 10, 10);

		contentPane.add(postButton, gbc_moveSelectionPostButton);

		postButton.addActionListener((evt) -> {
			if (!messageEnterTextfield.getText().isEmpty()) try {
				final Message message = envoyClient.createMessage("Kai", "Maxi", messageEnterTextfield.getText());
				envoyClient.sendMessage(message);
				appendMessageToChat(message);
				messageEnterTextfield.setText("");
			} catch (Exception e) {
				JOptionPane.showMessageDialog(this,
						"An exception occured while sending a message. See the log for more details.",
						"Exception occured",
						JOptionPane.ERROR_MESSAGE);
				e.printStackTrace();
			}
		});
		new Thread(() -> loadUserJList()).start();
	}

	public void loadUserJList() {
		Users users = envoyClient.getUsersListXml();

		SwingUtilities.invokeLater(() -> {
			// User List
			JList<User>				userJList		= new JList<>();
			DefaultListModel<User>	userJListModel	= new DefaultListModel<>();
			users.getUser().forEach(user -> userJListModel.addElement(user));
			userJList.setModel(userJListModel);

			GridBagConstraints gbc_userList = new GridBagConstraints();
			gbc_userList.fill	= GridBagConstraints.BOTH;
			gbc_userList.gridx	= 0;
			gbc_userList.gridy	= 1;

			// gbc_userList.insets = new Insets(10, 10, 10, 10);
			System.out.println(userJListModel.getSize());
			System.out.println("test");

			contentPane.add(userJList, gbc_userList);
		});
	}

	/**
	 * Extracts the first text content from a message.
	 * 
	 * @param message The message from which to return the text content
	 * @return The first content of type 'text'
	 */
	public String getFirstTextContent(Message message) { return message.getContent().get(0).getText(); }

	/**
	 * Appends a message with sender and message content to the message list.
	 * 
	 * @param message The message to append
	 */
	private void appendMessageToChat(Message message) {
		listModel.addElement("<html>" + "<p style=\"color:#d2d235\"> <b> <small>" + message.getMetaData().getSender()
				+ "</b> </small>" + "<br>" + "<p style=\"color:white\">" + getFirstTextContent(message)
				+ "</span></html>");
	}

	public static void main(String[] args)
			throws ClientProtocolException, IOException, SAXException, ParserConfigurationException {
		EventQueue.invokeLater(() -> {
			try {
				ChatWindow frame = new ChatWindow();
				frame.setVisible(true);
			} catch (Exception e) {
				e.printStackTrace();
			}
		});
	}
}