ContactsChooserDialog is now centered around a parent component

additionally:
* fixed bug not updating date color when changing themes
* improved style of forwardMessage-Methoden

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

@@ -154,6 +154,7 @@ public class ChatWindow extends JFrame {
 		});
 
 		scrollPane.setViewportView(messageList);
+		scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
 		scrollPane.addComponentListener(new ComponentAdapter() {
 
 			// Update list elements when scroll pane (and thus list) is resized
@@ -163,7 +164,6 @@ public class ChatWindow extends JFrame {
 				messageList.synchronizeModel();
 			}
 		});
-		scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
 
 		GridBagConstraints gbc_scrollPane = new GridBagConstraints();
 		gbc_scrollPane.fill			= GridBagConstraints.BOTH;
@@ -213,7 +213,6 @@ public class ChatWindow extends JFrame {
 		gbc_postButton.fill		= GridBagConstraints.BOTH;
 		gbc_postButton.gridx	= 2;
 		gbc_postButton.gridy	= 3;
-
 		gbc_postButton.insets = insets;
 
 		postButton.addActionListener((evt) -> { postMessage(); });
@@ -494,6 +493,7 @@ public class ChatWindow extends JFrame {
 		// messageList
 		messageList.setForeground(theme.getTextColor());
 		messageList.setBackground(theme.getCellColor());
+		messageList.synchronizeModel();
 		// scrollPane
 		scrollPane.applyTheme(theme);
 		scrollPane.autoscroll();
@@ -544,9 +544,6 @@ public class ChatWindow extends JFrame {
 		}
 		String text = messageEnterTextArea.getText().trim();
 		if (!text.isEmpty()) checkMessageTextLength();
-		// delete final line break, if present (especially if "Enter" is used to send
-		// the message)
-		if (text.endsWith(System.getProperty("line.separator"))) text = text.substring(0, text.lastIndexOf(System.getProperty("line.separator")));
 
 		// Create message
 		final Message message = new MessageBuilder(localDb.getUser().getId(), currentChat.getRecipient().getId(), localDb.getIdGenerator())
@@ -560,21 +557,21 @@ public class ChatWindow extends JFrame {
 	/**
 	 * Forwards a message.
 	 *
-	 * @param msg       the message to forward
+	 * @param message   the message to forward
 	 * @param recipient the new recipient of the message
 	 * @since Envoy v0.1-beta
 	 */
-	private void forwardMessage(Message msg, User recipient) {
+	private void forwardMessage(Message message, User... recipients) {
-		sendMessage(new MessageBuilder(msg, recipient.getId(), localDb.getIdGenerator()).build());
+		Arrays.stream(recipients).forEach(recipient -> {
-	}
+			if (message != null && recipients != null) sendMessage(new MessageBuilder(message, recipient.getId(), localDb.getIdGenerator()).build());
+			else throw new NullPointerException("No recipient or no message selected");
+		});
 
-	private void forwardMessageToMultipleUsers(Message message, Collection<User> recipients) {
-		recipients.forEach(recipient -> forwardMessage(message, recipient));
 	}
 
 	@SuppressWarnings("unused")
-	private void forwardMultipleMessagesToMultipleUsers(Collection<Message> messages, Collection<User> recipients) {
+	private void forwardMessages(Collection<Message> messages, User... recipients) {
-		messages.forEach(message -> forwardMessageToMultipleUsers(message, recipients));
+		messages.forEach(message -> { forwardMessage(message, recipients); });
 	}
 
 	/**

src/main/java/envoy/client/ui/container/ContactsChooserDialog.java

@@ -1,9 +1,11 @@
 package envoy.client.ui.container;
 
 import java.awt.BorderLayout;
+import java.awt.Component;
 import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 import javax.swing.JButton;
@@ -12,7 +14,6 @@ import javax.swing.JPanel;
 import javax.swing.border.EmptyBorder;
 
 import envoy.client.data.Settings;
-import envoy.client.net.Client;
 import envoy.client.ui.Theme;
 import envoy.client.ui.list.ComponentList;
 import envoy.client.ui.list.ComponentList.SelectionMode;
@@ -34,7 +35,7 @@ public class ContactsChooserDialog extends JDialog {
 
 	private static final long serialVersionUID = -5774558118579032256L;
 
-	private ComponentList<User>	contactList		= new ComponentList<>();
+	private ComponentList<User>	contactList		= new ComponentList<User>().setModel(new Model<User>());
 	private JButton				okButton		= new JButton("Ok");
 	private JButton				cancelButton	= new JButton("Cancel");
 
@@ -54,14 +55,17 @@ public class ContactsChooserDialog extends JDialog {
 	 * <code>ArrayList</code>.
 	 *
 	 * @param title   the title of the dialog
+	 * @param parent  this @{@link Component} will be parsed to
+	 *                {@link java.awt.Window#setLocationRelativeTo(Component)} in
+	 *                order to change the location of the dialog
 	 * @param message the {@link Message} to display on top of the Dialog
-	 * @param client  the client whose contacts should be displayed
+	 * @param users   the users that should be displayed
 	 * @return the selected Element (yet has to be casted to the wanted type due to
 	 *         the Generics limitations in Java)
 	 * @since Envoy v0.1-beta
 	 */
-	public static List<User> showForwardingDialog(String title, Message message, Client client) {
+	public static List<User> showForwardingDialog(String title, Component parent, Message message, Collection<User> users) {
-		ContactsChooserDialog dialog = new ContactsChooserDialog();
+		ContactsChooserDialog dialog = new ContactsChooserDialog(parent);
 		dialog.setTitle(title);
 		dialog.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 		dialog.addCancelButtonActionListener(e -> dialog.dispose());
@@ -72,7 +76,7 @@ public class ContactsChooserDialog extends JDialog {
 		List<User> results = new ArrayList<>();
 		dialog.addOkButtonActionListener(e -> { results.addAll(dialog.getContactList().getSelectedElements()); dialog.dispose(); });
 		Model<User> contactListModel = dialog.getContactList().getModel();
-		client.getContacts().getContacts().forEach(user -> contactListModel.add(user));
+		users.forEach(contactListModel::add);
 		dialog.setVisible(true);
 		dialog.repaint();
 		dialog.revalidate();
@@ -80,12 +84,15 @@ public class ContactsChooserDialog extends JDialog {
 	}
 
 	/**
+	 * @param parent this @{@link Component} will be parsed to
+	 *               {@link java.awt.Window#setLocationRelativeTo(Component)}
 	 * @since Envoy v0.1-beta
 	 */
-	private ContactsChooserDialog() {
+	private ContactsChooserDialog(Component parent) {
 		contactList.setSelectionMode(SelectionMode.MULTIPLE);
 		// setBounds(100, 100, 450, 300);
 		setModal(true);
+		setLocationRelativeTo(parent);
 		getContentPane().setLayout(new BorderLayout());
 		setBackground(theme.getBackgroundColor());
 		setForeground(theme.getTextColor());