Added Group Creation Functionality

* Implemented new group creation scene (fxml)
* Added group creation controller
* Adjusted contact search scene (fxml)

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

@@ -58,6 +58,13 @@ public final class SceneContext {
 		 */
 		CONTACT_SEARCH_SCENE("/fxml/ContactSearchScene.fxml"),
 
+		/**
+		 * The scene in which the group creation screen is displayed.
+		 * 
+		 * @since Envoy Client v0.1-beta
+		 */
+		GROUP_CREATION_SCENE("/fxml/GroupCreationScene.fxml"),
+
 		/**
 		 * The scene in which the login screen is displayed.
 		 * 

src/main/java/envoy/client/ui/controller/ChatScene.java

@@ -19,9 +19,9 @@ import envoy.client.data.Settings;
 import envoy.client.event.MessageCreationEvent;
 import envoy.client.net.Client;
 import envoy.client.net.WriteProxy;
+import envoy.client.ui.ContactListCell;
 import envoy.client.ui.MessageListCell;
 import envoy.client.ui.SceneContext;
-import envoy.client.ui.ContactListCell;
 import envoy.data.Contact;
 import envoy.data.Message;
 import envoy.data.MessageBuilder;
@@ -173,7 +173,7 @@ public final class ChatScene {
 	@FXML
 	private void addContactButtonClicked() {
 		sceneContext.load(SceneContext.SceneInfo.CONTACT_SEARCH_SCENE);
-		sceneContext.<ContactSearchScene>getController().initializeData(sceneContext);
+		sceneContext.<ContactSearchScene>getController().initializeData(sceneContext, localDB);
 	}
 
 	@FXML

src/main/java/envoy/client/ui/controller/ContactSearchScene.java

@@ -8,9 +8,10 @@ import javafx.fxml.FXML;
 import javafx.scene.control.*;
 import javafx.scene.control.Alert.AlertType;
 
+import envoy.client.data.LocalDB;
 import envoy.client.event.SendEvent;
-import envoy.client.ui.SceneContext;
 import envoy.client.ui.ContactListCell;
+import envoy.client.ui.SceneContext;
 import envoy.data.Contact;
 import envoy.event.ElementOperation;
 import envoy.event.EventBus;
@@ -38,6 +39,9 @@ public class ContactSearchScene {
 	@FXML
 	private Button searchButton;
 
+	@FXML
+	private Button newGroupButton;
+
 	@FXML
 	private TextField searchBar;
 
@@ -46,6 +50,8 @@ public class ContactSearchScene {
 
 	private SceneContext sceneContext;
 
+	private LocalDB localDB;
+
 	private static EventBus		eventBus	= EventBus.getInstance();
 	private static final Logger	logger		= EnvoyLog.getLogger(ChatScene.class);
 
@@ -53,7 +59,10 @@ public class ContactSearchScene {
 	 * @param sceneContext enables the user to return to the chat scene
 	 * @since Envoy Client v0.1-beta
 	 */
-	public void initializeData(SceneContext sceneContext) { this.sceneContext = sceneContext; }
+	public void initializeData(SceneContext sceneContext, LocalDB localDB) {
+		this.sceneContext	= sceneContext;
+		this.localDB		= localDB;
+	}
 
 	@FXML
 	private void initialize() {
@@ -122,6 +131,12 @@ public class ContactSearchScene {
 		}
 	}
 
+	@FXML
+	private void newGroupButtonClicked() {
+		sceneContext.load(SceneContext.SceneInfo.GROUP_CREATION_SCENE);
+		sceneContext.<GroupCreationScene>getController().initializeData(sceneContext, localDB);
+	}
+
 	@FXML
 	private void backButtonClicked() { sceneContext.pop(); }
 }

src/main/java/envoy/client/ui/controller/GroupCreationScene.java

@@ -0,0 +1,78 @@
+package envoy.client.ui.controller;
+
+import java.util.stream.Collectors;
+
+import javafx.application.Platform;
+import javafx.fxml.FXML;
+import javafx.scene.control.*;
+
+import envoy.client.data.LocalDB;
+import envoy.client.event.SendEvent;
+import envoy.client.ui.ContactListCell;
+import envoy.client.ui.SceneContext;
+import envoy.data.Contact;
+import envoy.data.User;
+import envoy.event.EventBus;
+import envoy.event.GroupCreationEvent;
+
+/**
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>ContactSearchSceneController.java</strong><br>
+ * Created: <strong>07.06.2020</strong><br>
+ *
+ * @author Maximilian K&auml;fer
+ * @since Envoy Client v0.1-beta
+ */
+public class GroupCreationScene {
+
+	@FXML
+	private Button backButton;
+
+	@FXML
+	private Button createButton;
+
+	@FXML
+	private TextField groupNameBar;
+
+	@FXML
+	private ListView<Contact> contactList;
+
+	private SceneContext sceneContext;
+
+	private static EventBus		eventBus	= EventBus.getInstance();
+	// private static final Logger logger = EnvoyLog.getLogger(ChatScene.class);
+
+	@FXML
+	private void initialize() {
+		contactList.setCellFactory(e -> new ContactListCell());
+		contactList.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
+	}
+
+	/**
+	 * @param sceneContext enables the user to return to the chat scene
+	 * @since Envoy Client v0.1-beta
+	 */
+	public void initializeData(SceneContext sceneContext, LocalDB localDB) {
+		this.sceneContext	= sceneContext;
+		Platform.runLater(() -> contactList.getItems()
+			.addAll(localDB.getUsers()
+				.values()
+				.stream()
+				.filter(c -> c instanceof User && c.getID() != localDB.getUser().getID())
+				.collect(Collectors.toList())));
+	}
+
+	/**
+	 * Sends a {@link GroupCreationEvent} to the server.
+	 *
+	 * @since Envoy Client v0.1-beta
+	 */
+	@FXML
+	private void sendGroupObject() {
+		eventBus.dispatch(new SendEvent(new GroupCreationEvent(groupNameBar.getText(),
+				contactList.getSelectionModel().getSelectedItems().stream().map(Contact::getID).collect(Collectors.toSet()))));
+	}
+
+	@FXML
+	private void backButtonClicked() { sceneContext.pop(); }
+}