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

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package envoy.client.ui;
import java.awt.*;
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import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.logging.Level;
import java.util.logging.Logger;
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import javax.swing.*;
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import javax.swing.border.EmptyBorder;
import envoy.client.*;
import envoy.client.event.ThemeChangeEvent;
import envoy.client.ui.list.ComponentList;
import envoy.client.ui.settings.SettingsScreen;
import envoy.client.util.EnvoyLog;
import envoy.data.Message;
import envoy.data.MessageBuilder;
import envoy.data.User;
import envoy.event.EventBus;
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/**
* Project: <strong>envoy-client</strong><br>
* File: <strong>ChatWindow.java</strong><br>
* Created: <strong>28 Sep 2019</strong><br>
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*
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* @author Kai S. K. Engelbart
* @author Maximilian K&auml;fer
* @author Leon Hofmeister
* @since Envoy v0.1-alpha
*/
public class ChatWindow extends JFrame {
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// User specific objects
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private Client client;
private LocalDB localDB;
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// GUI components
private JPanel contentPane = new JPanel();
private PrimaryTextArea messageEnterTextArea = new PrimaryTextArea(space);
private JList<User> userList = new JList<>();
private Chat currentChat;
private ComponentList<Message> messageList = new ComponentList<>(new MessageListRenderer());
private PrimaryScrollPane scrollPane = new PrimaryScrollPane();
private JTextPane textPane = new JTextPane();
private PrimaryButton postButton = new PrimaryButton("Post");
private PrimaryButton settingsButton = new PrimaryButton("Settings");
private static final Logger logger = EnvoyLog.getLogger(ChatWindow.class.getSimpleName());
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// GUI component spacing
private final static int space = 4;
private static final Insets insets = new Insets(space, space, space, space);
private static final long serialVersionUID = 6865098428255463649L;
/**
* Initializes a {@link JFrame} with UI elements used to send and read messages
* to different users.
*
* @since Envoy v0.1-alpha
*/
public ChatWindow() {
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setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 600, 800);
setTitle("Envoy");
setLocationRelativeTo(null);
setIconImage(Toolkit.getDefaultToolkit().createImage(getClass().getClassLoader().getResource("envoy_logo.png")));
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contentPane.setBorder(new EmptyBorder(space, space, space, space));
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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, 0.07 };
contentPane.setLayout(gbl_contentPane);
// TODO: messageList.setFocusTraversalKeysEnabled(false);
// messageList.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
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// messageList.setFont(new Font("Arial", Font.PLAIN, 17));
// messageList.setFixedCellHeight(60);
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messageList.setBorder(new EmptyBorder(space, space, space, space));
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scrollPane.setViewportView(messageList);
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 = insets;
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contentPane.add(scrollPane, gbc_scrollPane);
// Message enter field
messageEnterTextArea.addKeyListener(new KeyAdapter() {
@Override
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER
&& (Settings.getInstance().isEnterToSend() && e.getModifiersEx() == 0 || e.getModifiersEx() == KeyEvent.CTRL_DOWN_MASK))
postMessage();
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}
});
GridBagConstraints gbc_messageEnterTextfield = new GridBagConstraints();
gbc_messageEnterTextfield.fill = GridBagConstraints.BOTH;
gbc_messageEnterTextfield.gridx = 1;
gbc_messageEnterTextfield.gridy = 2;
gbc_messageEnterTextfield.insets = insets;
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contentPane.add(messageEnterTextArea, gbc_messageEnterTextfield);
// Post Button
GridBagConstraints gbc_moveSelectionPostButton = new GridBagConstraints();
gbc_moveSelectionPostButton.fill = GridBagConstraints.BOTH;
gbc_moveSelectionPostButton.gridx = 2;
gbc_moveSelectionPostButton.gridy = 2;
gbc_moveSelectionPostButton.insets = insets;
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postButton.addActionListener((evt) -> { postMessage(); });
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contentPane.add(postButton, gbc_moveSelectionPostButton);
// Settings Button
GridBagConstraints gbc_moveSelectionSettingsButton = new GridBagConstraints();
gbc_moveSelectionSettingsButton.fill = GridBagConstraints.BOTH;
gbc_moveSelectionSettingsButton.gridx = 2;
gbc_moveSelectionSettingsButton.gridy = 0;
gbc_moveSelectionSettingsButton.insets = insets;
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settingsButton.addActionListener((evt) -> {
try {
new SettingsScreen().setVisible(true);
} catch (Exception e) {
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logger.log(Level.WARNING, "An error occured while opening the settings screen", e);
e.printStackTrace();
}
});
contentPane.add(settingsButton, gbc_moveSelectionSettingsButton);
// Partner name display
textPane.setFont(new Font("Arial", Font.PLAIN, 20));
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textPane.setEditable(false);
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GridBagConstraints gbc_partnerName = new GridBagConstraints();
gbc_partnerName.fill = GridBagConstraints.HORIZONTAL;
gbc_partnerName.gridx = 1;
gbc_partnerName.gridy = 0;
gbc_partnerName.insets = insets;
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contentPane.add(textPane, gbc_partnerName);
userList.setCellRenderer(new UserListRenderer());
userList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
userList.addListSelectionListener((listSelectionEvent) -> {
if (client != null && localDB != null && !listSelectionEvent.getValueIsAdjusting()) {
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@SuppressWarnings("unchecked")
final JList<User> selectedUserList = (JList<User>) listSelectionEvent.getSource();
final User user = selectedUserList.getSelectedValue();
currentChat = localDB.getChats().stream().filter(chat -> chat.getRecipient().getId() == user.getId()).findFirst().get();
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// Set all unread messages in the chat to read
readCurrentChat();
client.setRecipient(user);
textPane.setText(currentChat.getRecipient().getName());
messageList.setModel(currentChat.getModel());
scrollPane.setChatOpened(true);
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contentPane.revalidate();
}
});
userList.setFont(new Font("Arial", Font.PLAIN, 17));
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userList.setBorder(new EmptyBorder(space, space, space, space));
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GridBagConstraints gbc_userList = new GridBagConstraints();
gbc_userList.fill = GridBagConstraints.VERTICAL;
gbc_userList.gridx = 0;
gbc_userList.gridy = 1;
gbc_userList.anchor = GridBagConstraints.PAGE_START;
gbc_userList.insets = insets;
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applyTheme(Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()));
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contentPane.add(userList, gbc_userList);
contentPane.revalidate();
EventBus.getInstance().register(ThemeChangeEvent.class, (evt) -> applyTheme((Theme) evt.get()));
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contentPane.revalidate();
}
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/**
* Used to immediately reload the ChatWindow when settings were changed.
*
* @param theme the theme to change colors into
* @since Envoy v0.2-alpha
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*/
private void applyTheme(Theme theme) {
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// contentPane
contentPane.setBackground(theme.getBackgroundColor());
contentPane.setForeground(theme.getUserNameColor());
// messageList
// messageList.setSelectionForeground(theme.getUserNameColor());
// messageList.setSelectionBackground(theme.getSelectionColor());
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messageList.setForeground(theme.getMessageColorChat());
messageList.setBackground(theme.getCellColor());
// scrollPane
scrollPane.applyTheme(theme);
scrollPane.autoscroll();
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// messageEnterTextArea
messageEnterTextArea.setCaretColor(theme.getTypingMessageColor());
messageEnterTextArea.setForeground(theme.getTypingMessageColor());
messageEnterTextArea.setBackground(theme.getCellColor());
// postButton
postButton.setForeground(theme.getInteractableForegroundColor());
postButton.setBackground(theme.getInteractableBackgroundColor());
// settingsButton
settingsButton.setForeground(theme.getInteractableForegroundColor());
settingsButton.setBackground(theme.getInteractableBackgroundColor());
// textPane
textPane.setBackground(theme.getBackgroundColor());
textPane.setForeground(theme.getUserNameColor());
// userList
userList.setSelectionForeground(theme.getUserNameColor());
userList.setSelectionBackground(theme.getSelectionColor());
userList.setForeground(theme.getUserNameColor());
userList.setBackground(theme.getCellColor());
}
private void postMessage() {
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if (!client.hasRecipient()) {
JOptionPane.showMessageDialog(this, "Please select a recipient!", "Cannot send message", JOptionPane.INFORMATION_MESSAGE);
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return;
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}
if (!messageEnterTextArea.getText().isEmpty()) try {
// Create message
final Message message = new MessageBuilder(localDB.getUser().getId(), currentChat.getRecipient().getId())
.setText(messageEnterTextArea.getText())
.build();
// Send message
// TODO: Store offline messages
client.sendMessage(message);
// Add message to LocalDB and update UI
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currentChat.appendMessage(message);
// messageList.setModel(currentChat.getModel());
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// Clear text field
messageEnterTextArea.setText("");
revalidate();
repaint();
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} 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();
}
}
/**
* Initializes the elements of the user list by downloading them from the
* server.
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*
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* @since Envoy v0.1-alpha
*/
private void loadUsersAndChats() {
new Thread(() -> {
DefaultListModel<User> userListModel = new DefaultListModel<>();
localDB.getUsers().values().forEach(user -> {
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userListModel.addElement(user);
// Check if user exists in local DB
if (localDB.getChats().stream().filter(c -> c.getRecipient().getId() == user.getId()).count() == 0)
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localDB.getChats().add(new Chat(user));
});
SwingUtilities.invokeLater(() -> userList.setModel(userListModel));
}).start();
}
/**
* Updates the data model and the UI repeatedly after a certain amount of
* time.
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*
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* @param timeout the amount of time that passes between two requests sent to
* the server
* @since Envoy v0.1-alpha
*/
private void startSyncThread(int timeout) {
new Timer(timeout, (evt) -> {
new Thread(() -> {
// Synchronize
try {
// localDB.applySync(client.sendSync(client.getSender().getId(),
// localDB.fillSync(client.getSender().getId())));
} catch (Exception e) {
logger.log(Level.SEVERE, "Could not perform sync", e);
}
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// TODO: Process unread messages
// localDB.addUnreadMessagesToLocalDB();
// localDB.clearUnreadMessagesSync();
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// Mark unread messages as read when they are in the current chat
readCurrentChat();
// Update UI
SwingUtilities.invokeLater(() -> { updateUserStates(); contentPane.revalidate(); contentPane.repaint(); });
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}).start();
}).start();
}
private void updateUserStates() {
for (int i = 0; i < userList.getModel().getSize(); i++)
for (int j = 0; j < localDB.getChats().size(); j++)
if (userList.getModel().getElementAt(i).getId() == localDB.getChats().get(j).getRecipient().getId())
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userList.getModel().getElementAt(i).setStatus(localDB.getChats().get(j).getRecipient().getStatus());
}
/**
* Marks messages in the current chat as {@code READ}.
*/
private void readCurrentChat() {
if (currentChat != null) {
// TODO: localDB.setMessagesToRead(currentChat);
}
}
/**
* Sets the {@link Client} used by this {@link ChatWindow}. If the client is
* online, the sync thread is started.
*
* @param client the {@link Client} used to send and receive messages
* @since Envoy v0.2-alpha
*/
public void setClient(Client client) {
this.client = client;
if (client.isOnline() && localDB != null) startSyncThread(Config.getInstance().getSyncTimeout());
}
/**
* Sets the {@link LocalDB} used by this {@link ChatWindow}. After invoking this
* method, users and chats will be loaded from the database into the GUI.
*
* @param localDB the {@link LocalDB} used to manage stored messages and users
* @since Envoy v0.2-alpha
*/
public void setLocalDB(LocalDB localDB) {
this.localDB = localDB;
loadUsersAndChats();
if (client != null && client.isOnline()) startSyncThread(Config.getInstance().getSyncTimeout());
}
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}