Merge branch 'fix/v2/taskUsersList' into 'int/v2'

Delegate update usersList in a task

See merge request !51

src/main/java/client/main/controller/FXHome.java

 package main.java.client.main.controller;
 
+import javafx.application.Platform;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
+import javafx.concurrent.Task;
 import javafx.fxml.FXML;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Node;
@@ -59,33 +61,52 @@ public class FXHome {
     }
 
     public void updateData() {
-        homeListViewUsersOnlineData.clear();
-        for (int i = 0; i < this.model.getUsersList().size(); i++) {
-            homeListViewUsersOnlineData.add(this.model.getUsersList().get(i));
-        }
 
-        homeListViewUsersOnline.setItems(homeListViewUsersOnlineData);
-        homeListViewUsersOnline.setCellFactory((list) -> {
-            return new ListCell<UserLight>() {
-                @Override
-                protected void updateItem(UserLight item, boolean empty) {
-                    super.updateItem(item, empty);
-
-                    if (item == null || empty) {
-                        setText(null);
-                    } else {
-                        setText(item.getFirstName() + " " + item.getLastName());
-                    }
-                }
-            };
-        });
+        final ListView<String> group = new ListView ();
+
+        Task<Void> task = new Task<Void>() {
 
-        // Handle ListView selection changes.
-        homeListViewUsersOnline.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
-            System.out.println("ListView Selection Changed (selected: " + newValue.toString() + ")");
-        });
+            @Override protected Void call() throws Exception {
+
+                homeListViewUsersOnline.getItems().clear();
+
+                for (int i = 0; i < model.getUsersList().size(); i++) {
+                    int finalI = i;
+                    Platform.runLater(new Runnable() {
+                        @Override public void run() {
+                            homeListViewUsersOnlineData.add(model.getUsersList().get(finalI));
+                        }
+                    });
+                }
 
-        homeListViewUsersOnline.refresh();
+                homeListViewUsersOnline.setItems(homeListViewUsersOnlineData);
+                homeListViewUsersOnline.setCellFactory((list) -> {
+                    return new ListCell<UserLight>() {
+                        @Override
+                        protected void updateItem(UserLight item, boolean empty) {
+                            super.updateItem(item, empty);
+
+                            if (item == null || empty) {
+                                setText(null);
+                            } else {
+                                setText(item.getFirstName() + " " + item.getLastName());
+                            }
+                        }
+                    };
+                });
+
+                // Handle ListView selection changes.
+                homeListViewUsersOnline.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, newValue) -> {
+                    System.out.println("ListView Selection Changed (selected: " + newValue.toString() + ")");
+                });
+
+                homeListViewUsersOnline.refresh();
+
+                return null;
+            }
+        };
+
+        task.run();
     }
 
     @FXML