Added automatic line separation and Keylistener for posting

Improvements yet to be made (help wanted!):
* automatic line separation does not work
* automatic line separation needs a case for insertion of a String
* Keylistener for Posting does not work
* Method for listening to multiple keys needed (ctrl+enter)
* A template Settings screen was added, has yet to be polished

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

@@ -28,9 +28,8 @@ import envoy.schema.Users;
  * @author Kai S. K. Engelbart
  * @author Maximilian Käfer
  * @author Leon Hofmeister
- * @since Envoy 0.1
+ * @since Envoy v0.1-alpha
  */
-
 public class Client {
 
 	private ObjectFactory	objectFactory	= new ObjectFactory();
@@ -53,9 +52,8 @@ public class Client {
 	 * Because sending a request is a blocking operation, it is executed
 	 * asynchronously.
 	 * 
-	 * @param sender      name of the sender
+	 * @param message the {@link Message} we want to send
-	 * @param recipient   name of the recipient
+	 * @since Envoy v0.1-alpha
-	 * @param textContent content (text) of the message
 	 */
 	public void sendMessage(Message message) {
 		new Thread(() -> {
@@ -90,6 +88,7 @@ public class Client {
 	 * 
 	 * @param textContent The content (text) of the message
 	 * @return prepared {@link Message} object
+	 * @since Envoy v0.1-alpha
 	 */
 	public Message createMessage(String textContent) {
 		Message.MetaData metaData = objectFactory.createMessageMetaData();
@@ -109,22 +108,28 @@ public class Client {
 		return message;
 	}
 
-	public Users getUsersListXml() { return get(String.format("%s:%d/envoy-server/rest/user", config.getServer(), config.getPort()), Users.class); }
+	public Users getUsersListXml() {
+		return get(String.format("%s:%d/envoy-server/rest/user", config.getServer(), config.getPort()), Users.class);
+	}
 
 	public Messages getUnreadMessages(long userId) {
-		return get(String.format("%s:%d/envoy-server/rest/message/receive?userId=%d", config.getServer(), config.getPort(), userId), Messages.class);
+		return get(String
+			.format("%s:%d/envoy-server/rest/message/receive?userId=%d", config.getServer(), config.getPort(), userId),
+				Messages.class);
 	}
 
 	/**
-	 * Returns a {@link User} with a specific name by name.
+	 * Returns a {@link User} with a specific id by name.
 	 * 
 	 * @param name - the name of the {@link User}
 	 * @return a {@link User} with the specified name
 	 * @since Envoy v0.1-alpha
 	 */
 	private User getUser(String name) {
-		return get(String.format("%s:%d/envoy-server/rest/user/sender?name=%s", config.getServer(), config.getPort(), name), Users.class).getUser()
+		return get(
-			.get(0);
+				String
+					.format("%s:%d/envoy-server/rest/user/sender?name=%s", config.getServer(), config.getPort(), name),
+				Users.class).getUser().get(0);
 	}
 
 	/**
@@ -166,9 +171,21 @@ public class Client {
 	 */
 	public User getSender() { return sender; }
 
+	/**
+	 * @return the recipient of a message.
+	 * @since Envoy v0.1-alpha
+	 */
 	public User getRecipient() { return recipient; }
 
+	/**
+	 * @param recipient the recipient to set
+	 * @since Envoy v0.1-alpha
+	 */
 	public void setRecipient(User recipient) { this.recipient = recipient; }
 
+	/**
+	 * @return true, if a recipient is selected
+	 * @since Envoy v0.1-alpha
+	 */
 	public boolean hasRecipient() { return recipient != null; }
 }

src/main/java/envoy/client/Config.java

@@ -59,7 +59,9 @@ public class Config {
 	 * @return {@code true} if server, port and localDB directory are known.
 	 * @since Envoy v0.1-alpha
 	 */
-	public boolean isInitialized() { return server != null && !server.isEmpty() && port > 0 && port < 65566 && localDB != null; }
+	public boolean isInitialized() {
+		return server != null && !server.isEmpty() && port > 0 && port < 65566 && localDB != null;
+	}
 
 	/**
 	 * @return the host name of the Envoy server

src/main/java/envoy/client/LocalDB.java

@@ -23,16 +23,16 @@ import envoy.schema.User;
 public class LocalDB {
 
 	private File		localDB;
-	private User		sender;
+	private User		client;
 	private List<Chat>	chats	= new ArrayList<>();
 
 	/**
 	 * Constructs an empty local database.
 	 *
-	 * @param sender the user that is logged in with this client
+	 * @param client the user that is logged in with this client
 	 * @since Envoy v0.1-alpha
 	 **/
-	public LocalDB(User sender) { this.sender = sender; }
+	public LocalDB(User sender) { this.client = sender; }
 
 	/**
 	 * Initializes the local database and fills it with values
@@ -43,9 +43,9 @@ public class LocalDB {
 	 * @since Envoy v0.1-alpha
 	 **/
 	public void initializeDBFile(File localDBDir) throws EnvoyException {
-		if (localDBDir.exists() && !localDBDir.isDirectory())
+		if (localDBDir.exists() && !localDBDir.isDirectory()) throw new EnvoyException(
-			throw new EnvoyException(String.format("LocalDBDir '%s' is not a directory!", localDBDir.getAbsolutePath()));
+				String.format("LocalDBDir '%s' is not a directory!", localDBDir.getAbsolutePath()));
-		localDB = new File(localDBDir, sender.getID() + ".db");
+		localDB = new File(localDBDir, client.getID() + ".db");
 		if (localDB.exists()) loadFromLocalDB();
 	}
 
@@ -89,8 +89,14 @@ public class LocalDB {
 
 	/**
 	 * @return all saves {@link Chat} objects that list the client user as the
-	 *         sender
+	 *         client
 	 * @since Envoy v0.1-alpha
 	 **/
 	public List<Chat> getChats() { return chats; }
+
+	/**
+	 * @return the User who initialised the local Database
+	 * @since Envoy v0.1-alpha
+	 */
+	public User getUser() { return client; }
 }

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

@@ -6,6 +6,9 @@ import java.awt.Font;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
+import java.awt.event.InputMethodEvent;
+import java.awt.event.InputMethodListener;
+import java.awt.event.KeyEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 
@@ -39,7 +42,7 @@ import envoy.schema.Users;
  * @author Kai S. K. Engelbart
  * @author Maximilian Käfer
  * @author Leon Hofmeister
- * @since Envoy 0.1
+ * @since Envoy v0.1-alpha
  */
 public class ChatWindow extends JFrame {
 
@@ -53,6 +56,8 @@ public class ChatWindow extends JFrame {
 	private JList<User>	userList	= new JList<>();
 	private Chat		currentChat;
 
+	private String messageText;
+
 	public ChatWindow(Client client, LocalDB localDB) {
 		this.client		= client;
 		this.localDB	= localDB;
@@ -77,7 +82,7 @@ public class ChatWindow extends JFrame {
 		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 };
+		gbl_contentPane.rowWeights		= new double[] { 0.05, 1.0, 0.07 };
 		contentPane.setLayout(gbl_contentPane);
 
 		JList<Message> messageList = new JList<>();
@@ -114,6 +119,30 @@ public class ChatWindow extends JFrame {
 
 		// Message enter field
 		JTextArea messageEnterTextfield = new JTextArea();
+		// checks for changed Message
+		messageEnterTextfield.addInputMethodListener(new InputMethodListener() {
+
+			public void caretPositionChanged(InputMethodEvent arg0) {}
+
+			public void inputMethodTextChanged(InputMethodEvent arg0) {
+				String		message				= messageEnterTextfield.getText();
+				int			messageSize			= message.length();
+				int			lineSize			= 45;
+				String[]	tempString			= message.split(System.getProperty("line.separator"));
+				int			currentLineAmount	= tempString.length;
+				int			wantedLineAmount	= Math.floorDiv(messageSize, lineSize);
+				if (currentLineAmount != wantedLineAmount) {
+					if (Math.abs(messageText.length() - messageSize) == 1
+							&& currentLineAmount == wantedLineAmount - 1) {// Check for "normal" Keystroke/Backspace
+						messageEnterTextfield.setText(transformLastSpace(message, wantedLineAmount, lineSize));
+					}
+				} else {// That's the case if a group of chars was a)inserted or b)deleted
+					// TODO
+				}
+				messageText = message;
+			}
+
+		});
 		messageEnterTextfield.setCaretColor(new Color(255, 255, 255));
 		messageEnterTextfield.setForeground(new Color(255, 255, 255));
 		messageEnterTextfield.setBackground(new Color(51, 51, 51));
@@ -122,17 +151,20 @@ public class ChatWindow extends JFrame {
 		messageEnterTextfield.setFont(new Font("Arial", Font.PLAIN, 17));
 		messageEnterTextfield.setBorder(new EmptyBorder(5, 5, 5, 5));
 
-		GridBagConstraints gbc_moveSelectionMessageEnterTextfield = new GridBagConstraints();
+		GridBagConstraints gbc_messageEnterTextfield = new GridBagConstraints();
-		gbc_moveSelectionMessageEnterTextfield.fill		= GridBagConstraints.BOTH;
+		gbc_messageEnterTextfield.fill	= GridBagConstraints.BOTH;
-		gbc_moveSelectionMessageEnterTextfield.gridx	= 1;
+		gbc_messageEnterTextfield.gridx	= 1;
-		gbc_moveSelectionMessageEnterTextfield.gridy	= 2;
+		gbc_messageEnterTextfield.gridy	= 2;
 
-		gbc_moveSelectionMessageEnterTextfield.insets = new Insets(10, 10, 10, 10);
+		gbc_messageEnterTextfield.insets = new Insets(10, 10, 10, 10);
 
-		contentPane.add(messageEnterTextfield, gbc_moveSelectionMessageEnterTextfield);
+		contentPane.add(messageEnterTextfield, gbc_messageEnterTextfield);
 
 		// Post Button
 		JButton postButton = new JButton("Post");
+		if (SettingsScreen.isEnterToSend() == true) { postButton.setMnemonic(KeyEvent.VK_ENTER); }
+		// TODO: Other option to send only on "ctrl"+"enter" needs to be implemented.
+		// TODO: Difficult. Also above statement doesn't work!
 		postButton.setForeground(new Color(255, 255, 255));
 		postButton.setBackground(new Color(102, 51, 153));
 		postButton.setBorderPainted(false);
@@ -147,7 +179,10 @@ public class ChatWindow extends JFrame {
 
 		postButton.addActionListener((evt) -> {
 			if (!client.hasRecipient()) {
-				JOptionPane.showMessageDialog(this, "Please select a recipient!", "Cannot send message", JOptionPane.INFORMATION_MESSAGE);
+				JOptionPane.showMessageDialog(this,
+						"Please select a recipient!",
+						"Cannot send message",
+						JOptionPane.INFORMATION_MESSAGE);
 				return;
 			}
 
@@ -175,6 +210,31 @@ public class ChatWindow extends JFrame {
 
 		contentPane.add(postButton, gbc_moveSelectionPostButton);
 
+		// Settings Button
+		JButton settingsButton = new JButton("Settings");
+		settingsButton.setForeground(new Color(255, 255, 255));
+		settingsButton.setBackground(new Color(102, 51, 153));
+		settingsButton.setBorderPainted(false);
+
+		GridBagConstraints gbc_moveSelectionSettingsButton = new GridBagConstraints();
+
+		gbc_moveSelectionSettingsButton.fill	= GridBagConstraints.BOTH;
+		gbc_moveSelectionSettingsButton.gridx	= 2;
+		gbc_moveSelectionSettingsButton.gridy	= 0;
+
+		gbc_moveSelectionSettingsButton.insets = new Insets(10, 10, 10, 10);
+
+		settingsButton.addActionListener((evt) -> {
+			try {
+				SettingsScreen.open(localDB.getUser().getName());
+			} catch (Exception e) {
+				SettingsScreen.open();
+				System.err.println("An Error occured while opening the Settings screen");
+				e.printStackTrace();
+			}
+		});
+		contentPane.add(settingsButton, gbc_moveSelectionSettingsButton);
+
 		// Partner name display
 		JTextPane textPane = new JTextPane();
 		textPane.setBackground(new Color(0, 0, 0));
@@ -200,7 +260,11 @@ public class ChatWindow extends JFrame {
 				final User			user				= selectedUserList.getSelectedValue();
 				client.setRecipient(user);
 
-				currentChat = localDB.getChats().stream().filter(chat -> chat.getRecipient().getID() == user.getID()).findFirst().get();
+				currentChat = localDB.getChats()
+					.stream()
+					.filter(chat -> chat.getRecipient().getID() == user.getID())
+					.findFirst()
+					.get();
 
 				client.setRecipient(user);
 
@@ -233,9 +297,31 @@ public class ChatWindow extends JFrame {
 		contentPane.revalidate();
 	}
 
+	/**
+	 * takes care of too long or not needed lines in the message.
+	 * 
+	 * @param message    the message that is currently written in the textfield
+	 * @param wantedLine the line at which we currently are positioned
+	 * @param lineSize   the amount of chars per line
+	 * @return the transformed message
+	 * @since Envoy v0.1-alpha
+	 */
+	private String transformLastSpace(String message, int wantedLine, int lineSize) {
+		int	index		= wantedLine * lineSize;
+		int	lastSpace	= message.lastIndexOf(" ", index);
+		if (index - lastSpace > lineSize) {// Fall Wort länger als Zeile
+			return message.substring(0, index) + System.getProperty("line.separator") + message.substring(index);
+		} else {
+			return message.substring(0, lastSpace - 1) + System.getProperty("line.separator")
+					+ message.substring(lastSpace + 1);
+		}
+	}
+
 	/**
 	 * Initializes the elements of the user list by downloading them from the
 	 * server.
+	 * 
+	 * @since Envoy v0.1-alpha
 	 */
 	private void loadUsersAndChats() {
 		new Thread(() -> {
@@ -257,14 +343,17 @@ public class ChatWindow extends JFrame {
 	 * 
 	 * @param timeout the amount of time that passes between two requests sent to
 	 *                the server
+	 * @since Envoy v0.1-alpha
 	 */
 	private void startReceiverThread(int timeout) {
 		new Timer(timeout, (evt) -> {
 			Messages unreadMessages = client.getUnreadMessages(client.getSender().getID());
 			for (int i = 0; i < unreadMessages.getMessage().size(); i++)
 				for (int j = 0; j < localDB.getChats().size(); j++)
-					if (localDB.getChats().get(j).getRecipient().getID() == unreadMessages.getMessage().get(i).getMetaData().getSender())
+					if (localDB.getChats().get(j).getRecipient().getID() == unreadMessages.getMessage()
-						localDB.getChats().get(j).appendMessage(unreadMessages.getMessage().get(i));
+						.get(i)
+						.getMetaData()
+						.getSender()) localDB.getChats().get(j).appendMessage(unreadMessages.getMessage().get(i));
 		}).start();
 	}
 }

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

@@ -0,0 +1,156 @@
+package envoy.client.ui;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.FlowLayout;
+
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
+
+/**
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>SettingsScreen.java</strong><br>
+ * Created: <strong>31 Oct 2019</strong><br>
+ * 
+ * @author Leon Hofmeister
+ */
+public class SettingsScreen extends JDialog {
+
+	private static final long	serialVersionUID	= -4476913491263077107L;
+	private final JPanel		contentPanel		= new JPanel();
+	public static boolean		EnterToSend			= true;
+
+	// TODO: Add a JPanel with all the Information necessary:
+	// change (Picture,Username, Email, Password) and toggle(light/dark mode,
+	// "ctrl+enter"/"enter"
+	// to send a message directly)
+	/**
+	 * Open the Settings screen.
+	 * Only suited for Dev/Error mode.
+	 * Avoid usage.
+	 * 
+	 * @since Envoy v0.1-alpha
+	 */
+	public static void open() {
+		SettingsScreen dialog = new SettingsScreen();
+		dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+		dialog.setVisible(true);
+	}
+
+	/**
+	 * Opens the Settings screen.<br>
+	 * Use preferreably since everyone is already initialised.<br>
+	 * It personalises the screen more.
+	 * 
+	 * @param Username The name of the User
+	 * @param Email    The Email that is associated with that Account
+	 * @since Envoy v0.1-alpha
+	 */
+	public static void open(String Username) {// , String Email) {AUSKLAMMERN, WENN ANMELDUNG PER
+												// EMAIL IMPLEMENTIERT IST!
+		SettingsScreen dialog = new SettingsScreen(Username);
+		dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+		dialog.setVisible(true);
+	}
+
+	/**
+	 * Builds the Settings screen.<br>
+	 * Use only as Dev/Error Mode.<br>
+	 * Avoid usage.
+	 * 
+	 * @since Envoy v0.1-alpha
+	 */
+	public SettingsScreen() {
+		setBackground(Color.BLACK);
+		setBounds(100, 100, 450, 300);
+		getContentPane().setLayout(new BorderLayout());
+		contentPanel.setBackground(Color.BLACK);
+		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
+		getContentPane().add(contentPanel, BorderLayout.CENTER);
+		contentPanel.setLayout(new BorderLayout(0, 0));
+		{
+			JPanel buttonPane = new JPanel();
+			buttonPane.setBackground(Color.BLACK);
+			getContentPane().add(buttonPane, BorderLayout.SOUTH);
+			buttonPane.setLayout(new BorderLayout(0, 0));
+			{
+				JButton okButton = new JButton("Save");
+				okButton.setActionCommand("OK");
+				buttonPane.add(okButton, BorderLayout.EAST);
+				getRootPane().setDefaultButton(okButton);
+				okButton.addActionListener((evt) -> {
+					// Hier später die Daten abspeichern, wenn Datenmodell implementiert ist
+					dispose();
+				});
+			}
+			{
+				JButton cancelButton = new JButton("Cancel");
+				cancelButton.setActionCommand("Cancel");
+				buttonPane.add(cancelButton, BorderLayout.WEST);
+
+				cancelButton.addActionListener((evt) -> { dispose(); });
+			}
+		}
+	}
+
+	/**
+	 * Builds the Settings screen.<br>
+	 * Use preferreably since everyone is already initialised.<br>
+	 * It personalises the screen more.
+	 * 
+	 * @param Username The name of the User
+	 * @param Email    The Email that is associated with that Account
+	 * @since Envoy v0.1-alpha
+	 */
+	public SettingsScreen(String Username) {// , String Email, String hashedPwd) {AUSKLAMMERN, WENN ANMELDUNG PER EMAIL
+											// IMPLEMENTIERT IST!
+		setBackground(Color.BLACK);
+		setBounds(100, 100, 450, 300);
+		getContentPane().setLayout(new BorderLayout());
+		contentPanel.setBackground(Color.BLACK);
+		contentPanel.setLayout(new FlowLayout());
+		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
+		getContentPane().add(contentPanel, BorderLayout.CENTER);
+		{
+			JPanel buttonPane = new JPanel();
+			buttonPane.setBackground(Color.BLACK);
+			getContentPane().add(buttonPane, BorderLayout.SOUTH);
+			buttonPane.setLayout(new BorderLayout(0, 0));
+			{
+				JButton okButton = new JButton("Save");
+				okButton.setActionCommand("OK");
+				buttonPane.add(okButton, BorderLayout.EAST);
+				getRootPane().setDefaultButton(okButton);
+				okButton.addActionListener((evt) -> {
+					// Hier später die Daten abspeichern, wenn Datenmodell implementiert ist
+					dispose();
+				});
+			}
+			{
+				JButton cancelButton = new JButton("Cancel");
+				cancelButton.setActionCommand("Cancel");
+				buttonPane.add(cancelButton, BorderLayout.WEST);
+
+				cancelButton.addActionListener((evt) -> { dispose(); });
+			}
+		}
+	}
+
+	/**
+	 * @return true if Enter should be used to send a message
+	 * @since Envoy v0.1-alpha
+	 */
+	public static boolean isEnterToSend() { return EnterToSend; }
+
+	/**
+	 * @param enterToSend <br>
+	 *                    toggles whether a message should be sent via
+	 *                    <br>
+	 *                    buttonpress "enter" or "ctrl"+"enter"
+	 * @since Envoy v0.1-alpha
+	 */
+	public static void setEnterToSend(boolean enterToSend) { EnterToSend = enterToSend; }
+	// TODO: Should be changed to private, but later to avoid warnings
+}