Adding contacts technical aspects

* Contact SearchResult from server is now getting processed and
correctly displayed.
* Sending a AddContact event to server, if button is pressed.
* Added several interface objects

src/main/java/envoy/client/event/AddContactEvent.java

@@ -0,0 +1,42 @@
+package envoy.client.event;
+
+import envoy.data.User;
+import envoy.event.ContactOperation.Operation;
+import envoy.event.Event;
+
+/**
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>AddContactEvent.java</strong><br>
+ * Created: <strong>09.02.2020</strong><br>
+ * 
+ * @author Maximilian K&auml;fer
+ * @since Envoy v0.3-alpha
+ */
+public class AddContactEvent implements Event<User> {
+
+	private User		contact;
+	private Operation	operation;
+
+	private static final long serialVersionUID = 7855669140917046709L;
+
+	/**
+	 * Initializes a {@link AddContactEvent}
+	 * 
+	 * @param contact   the user to be added to the contacts
+	 * @param operation the operation, which should be executed
+	 * @since Envoy v0.3-alpha
+	 */
+	public AddContactEvent(User contact, Operation operation) {
+		this.contact	= contact;
+		this.operation	= operation;
+	}
+
+	@Override
+	public User get() { return contact; }
+
+	/**
+	 * @return the operation, which should be executed
+	 */
+	public Operation getOperation() { return operation; }
+
+}

src/main/java/envoy/client/event/SearchResultEvent.java

@@ -0,0 +1,32 @@
+package envoy.client.event;
+
+import java.util.List;
+
+import envoy.data.User;
+import envoy.event.Event;
+
+/**
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>SearchResultEvent.java</strong><br>
+ * Created: <strong>08.02.2020</strong><br>
+ * 
+ * @author Maximilian K&auml;fer
+ * @since Envoy v0.3-alpha
+ */
+public class SearchResultEvent implements Event<List<User>> {
+
+	private final List<User> resultList;
+
+	private static final long serialVersionUID = 2540321329192201277L;
+
+	/**
+	 * Initializes a {@link SearchResultEvent}
+	 * 
+	 * @param resultList the List containing the contacts sent from the server
+	 * @since Envoy v0.3-alpha
+	 */
+	public SearchResultEvent(List<User> resultList) { this.resultList = resultList; }
+
+	@Override
+	public List<User> get() { return resultList; }
+}

src/main/java/envoy/client/net/Client.java

@@ -11,11 +11,10 @@ import javax.naming.TimeLimitExceededException;
 
 import envoy.client.Config;
 import envoy.client.data.LocalDb;
+import envoy.client.event.SearchResultEvent;
 import envoy.client.util.EnvoyLog;
 import envoy.data.*;
-import envoy.event.Event;
-import envoy.event.IdGeneratorRequest;
-import envoy.event.MessageStatusChangeEvent;
+import envoy.event.*;
 import envoy.util.SerializationUtils;
 
 /**
@@ -111,6 +110,9 @@ public class Client implements Closeable {
 		// Process message ID generation
 		receiver.registerProcessor(IdGenerator.class, localDb::setIdGenerator);
 
+		// Process contact searches
+		receiver.registerProcessor(Contacts.class, contacts -> EventBus.getInstance().dispatch(new SearchResultEvent(contacts.getContacts())));
+
 		// Request a generator if none is present or the existing one is consumed
 		if (!localDb.hasIdGenerator() || !localDb.getIdGenerator().hasNext()) requestIdGenerator();
 

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

@@ -9,12 +9,13 @@ import java.util.logging.Logger;
 
 import javax.swing.*;
 import javax.swing.border.EmptyBorder;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
 
 import envoy.client.Settings;
 import envoy.client.data.Chat;
 import envoy.client.data.LocalDb;
-import envoy.client.event.MessageCreationEvent;
-import envoy.client.event.ThemeChangeEvent;
+import envoy.client.event.*;
 import envoy.client.net.Client;
 import envoy.client.ui.list.ComponentList;
 import envoy.client.ui.list.ComponentListModel;
@@ -24,8 +25,8 @@ import envoy.data.Message;
 import envoy.data.Message.MessageStatus;
 import envoy.data.MessageBuilder;
 import envoy.data.User;
-import envoy.event.EventBus;
-import envoy.event.MessageStatusChangeEvent;
+import envoy.event.*;
+import envoy.event.ContactOperation.Operation;
 
 /**
  * Project: <strong>envoy-client</strong><br>
@@ -47,6 +48,7 @@ public class ChatWindow extends JFrame {
 	private JPanel					contentPane				= new JPanel();
 	private PrimaryTextArea			messageEnterTextArea	= new PrimaryTextArea(space);
 	private JList<User>				userList				= new JList<>();
+	private DefaultListModel<User>	userListModel			= new DefaultListModel<>();
 	private Chat					currentChat;
 	private ComponentList<Message>	messageList				= new ComponentList<>(new MessageListRenderer());
 	private PrimaryScrollPane		scrollPane				= new PrimaryScrollPane();
@@ -65,7 +67,7 @@ public class ChatWindow extends JFrame {
 	private final PrimaryTextArea			searchField			= new PrimaryTextArea(space);
 	private final PrimaryScrollPane			possibleContacts	= new PrimaryScrollPane();
 	private final ContactsSearchRenderer	contactRenderer		= new ContactsSearchRenderer();
-	private final ComponentListModel<User>	contactsSearchModel	= new ComponentListModel<>();
+	private final ComponentListModel<User>	contactsModel		= new ComponentListModel<>();
 	private final ComponentList<User>		contactList			= new ComponentList<>(contactRenderer);
 
 	private static final Logger logger = EnvoyLog.getLogger(ChatWindow.class.getSimpleName());
@@ -252,6 +254,43 @@ public class ChatWindow extends JFrame {
 
 		searchPane.add(searchField, gbc_searchField);
 
+		// Sends event to server, if input has changed
+		searchField.getDocument().addDocumentListener(new DocumentListener() {
+
+			@Override
+			public void removeUpdate(DocumentEvent e) {
+				if (client.isOnline()) {
+					try {
+						if(!searchField.getText().isEmpty()) {
+							client.sendEvent(new ContactsRequest(searchField.getText()));
+						} else {
+							contactsModel.clear();
+							revalidate();
+							repaint();
+						}
+					} catch (IOException e1) {
+						e1.printStackTrace();
+					}
+				}
+			}
+
+			@Override
+			public void insertUpdate(DocumentEvent e) {
+				if (client.isOnline()) {
+					try {
+						if(!searchField.getText().isEmpty()) {
+							client.sendEvent(new ContactsRequest(searchField.getText()));
+						}
+					} catch (IOException e1) {
+						e1.printStackTrace();
+					}
+				}
+			}
+
+			@Override
+			public void changedUpdate(DocumentEvent e) {}
+		});
+
 		GridBagConstraints gbc_cancelButton = new GridBagConstraints();
 		gbc_cancelButton.fill	= GridBagConstraints.BOTH;
 		gbc_cancelButton.gridx	= 1;
@@ -262,7 +301,7 @@ public class ChatWindow extends JFrame {
 
 		searchPane.add(cancelButton, gbc_cancelButton);
 
-		contactList.setModel(contactsSearchModel);
+		contactList.setModel(contactsModel);
 		possibleContacts.setBorder(new EmptyBorder(space, space, space, space));
 		possibleContacts.setViewportView(contactList);
 
@@ -276,7 +315,6 @@ public class ChatWindow extends JFrame {
 
 		searchPane.add(possibleContacts, gbc_possibleContacts);
 
-
 		// Contacts Header
 
 		GridBagConstraints gbc_contactsHeader = new GridBagConstraints();
@@ -359,6 +397,36 @@ public class ChatWindow extends JFrame {
 			repaint();
 		});
 
+		EventBus.getInstance().register(SearchResultEvent.class, (evt) -> {
+			contactsModel.clear();
+			final java.util.List<User> contacts = ((SearchResultEvent) evt).get();
+			logger.info("Received contact search result " + contacts);
+			contacts.forEach(contactsModel::add);
+			revalidate();
+			repaint();
+		});
+
+		EventBus.getInstance().register(AddContactEvent.class, (evt) -> {
+			User contact = ((AddContactEvent) evt).get();
+			Operation operation = ((AddContactEvent) evt).getOperation();
+			try {
+				client.sendEvent(new ContactOperation(contact, operation));
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
+
+			// TODO: Not finished LocalDB update of contact list
+			// Add this user to the chats
+			// userListModel.addElement(contact);
+			// Check if user exists in local DB
+			// if (localDb.getChats().stream().filter(c -> c.getRecipient().getId() ==
+			// contact.getId()).count() == 0)
+			// localDb.getChats().add(new Chat(contact));
+
+			revalidate();
+			repaint();
+		});
+
 		revalidate();
 		repaint();
 	}
@@ -461,7 +529,6 @@ public class ChatWindow extends JFrame {
 	 */
 	private void loadUsersAndChats() {
 		new Thread(() -> {
-			DefaultListModel<User> userListModel = new DefaultListModel<>();
 			localDb.getUsers().values().forEach(user -> {
 				userListModel.addElement(user);
 
@@ -511,7 +578,9 @@ public class ChatWindow extends JFrame {
 	 * @param client the {@link Client} used to send and receive messages
 	 * @since Envoy v0.2-alpha
 	 */
-	public void setClient(Client client) { this.client = client; }
+	public void setClient(Client client) {
+		this.client = client;
+	}
 
 	/**
 	 * Sets the {@link LocalDb} used by this {@link ChatWindow}. After

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

@@ -7,9 +7,12 @@ import java.awt.Font;
 import javax.swing.*;
 
 import envoy.client.Settings;
+import envoy.client.event.AddContactEvent;
 import envoy.client.ui.list.ComponentList;
 import envoy.client.ui.list.ComponentListCellRenderer;
 import envoy.data.User;
+import envoy.event.ContactOperation.Operation;
+import envoy.event.EventBus;
 
 /**
  * Defines how a contact is displayed.<br>
@@ -26,7 +29,6 @@ public class ContactsSearchRenderer implements ComponentListCellRenderer<User> {
 
 	private PrimaryScrollPane scrollPane = new PrimaryScrollPane();
 
-
 	@Override
 	public JComponent getListCellComponent(ComponentList<? extends User> list, User value, boolean isSelected) {
 		final JPanel panel = new JPanel();
@@ -34,9 +36,7 @@ public class ContactsSearchRenderer implements ComponentListCellRenderer<User> {
 		if (isSelected) {
 			panel.setBackground(Color.DARK_GRAY);
 			panel.setForeground(Color.RED);
-			// TODO: Selection
-			// setBackground(list.getSelectionBackground());
-			// setForeground(list.getSelectionForeground());
+
 		} else {
 			panel.setBackground(list.getBackground());
 			panel.setForeground(list.getForeground());
@@ -64,6 +64,10 @@ public class ContactsSearchRenderer implements ComponentListCellRenderer<User> {
 		add.setBackground(list.getBackground());
 		add.setForeground(list.getForeground());
 
+		add.addActionListener((evt) -> {
+			EventBus.getInstance().dispatch(new AddContactEvent(value, Operation.ADD));
+		});
+
 		panel.add(add);
 
 		// Define some space to the messages below