title: Resize JavaFX tab when double click
body: <p>I have this simple example with JavaFX tabs:</p>
  
  <pre><code>    public class test extends Application
  {
  
      private BorderPane root;
  
      // Navigation Utilization
      private ActionTabs actiontabs;
  
      @Override
      public void start(Stage primaryStage)
      {
  
          // Set Main Window Label
          primaryStage.setTitle("Desktop Client");
          Image iv = new Image(getClass().getResource("/images/internet-icon.png").toExternalForm());
          primaryStage.getIcons().add(iv);
  
          root = new BorderPane();
          root.setLeft(getLeftHBox(primaryStage, root));
          Scene scene = new Scene(root, 1000, 1000, Color.WHITESMOKE);  // Set main Stage color
  
          primaryStage.setScene(scene);
  
          Rectangle2D primaryScreenBounds = Screen.getPrimary().getVisualBounds();
  
          // Set Stage boundaries to visible bounds of the main screen
          primaryStage.setX(primaryScreenBounds.getMinX());
          primaryStage.setY(primaryScreenBounds.getMinY());
          primaryStage.setWidth(primaryScreenBounds.getWidth());  // Maximum width of the display
          primaryStage.setHeight(primaryScreenBounds.getHeight());    // Maximum height of the display
          primaryStage.show();
  
      }
  
      public static void main(String[] args)
      {
          launch(args);
      }
  
      private HBox getLeftHBox(Stage primaryStage, BorderPane root)
      {
          HBox hbox = new HBox();
  
          TabPane tabPane = new TabPane();
          BorderPane mainPane = new BorderPane();
  
          tabPane.setStyle("-fx-font-size: 12pt;"); // Set global size for the font
          // Create Tabs
          Tab tabA = new Tab();
          tabA.setText("Main Component");
          tabA.setStyle("-fx-font-size: 12pt;"); // Set size of the tab name
          tabA.setClosable(false); 
          // Add something in Tab
          StackPane tabA_stack = new StackPane();
          tabA_stack.setAlignment(Pos.CENTER);
          tabA_stack.getChildren().add(new Label("Label@Tab A"));
          tabA.setContent(tabA_stack);
          tabPane.getTabs().add(tabA);
  
          Tab tabB = new Tab();
          tabB.setText("Second Component");
          tabB.setStyle("-fx-font-size: 12pt;"); // Set size of the tab name
          tabB.setClosable(false); 
          // Add something in Tab
          StackPane tabB_stack = new StackPane();
          tabB_stack.setAlignment(Pos.CENTER);
          tabB_stack.getChildren().add(new Label("Label@Tab B"));
          tabB.setContent(tabB_stack);
          tabPane.getTabs().add(tabB);
  
          Tab tabC = new Tab();
          tabC.setText("Last Component");
          tabC.setStyle("-fx-font-size: 12pt;"); // Set size of the tab name
          tabC.setClosable(false); // da se mahne opciqta da se zatvarq tab
          // Add something in Tab
          StackPane tabC_vBox = new StackPane();
          tabC_vBox.setAlignment(Pos.CENTER);
          tabC_vBox.getChildren().add(new Label("Label@Tab C"));
          tabC.setContent(tabC_vBox);
          tabPane.getTabs().add(tabC);
  
          mainPane.setCenter(tabPane);
  
          mainPane.setPrefSize(300, 500);
          //mainPane.setLayoutX(5);     // Horizontal Position
          mainPane.setLayoutY(32);    // Vertical Position
  
          hbox.getChildren().addAll(mainPane);
  
          return hbox;
      }
  
  
  }
  </code></pre>
  
  <p>I want when I double click on a tab name to maximize the size of the body of the tab and make it the same width and height as the size of the application. Similar for example to Eclipse IDE tabs. Is this possible with JavaFX?  </p>
  
  <p><em><strong>EDIT</em></strong></p>
  
  <p>This is the code that I have tested.</p>
  
  <pre><code>public BorderPane initNavigation(Stage primaryStage)
      {
  
          VBox stackedTitledPanes = createStackedTitledPanes();
  
          ScrollPane scroll = makeScrollable(stackedTitledPanes);
  
          final TabPane tabPane = new TabPane();
          final BorderPane mainPane = new BorderPane();
  
          final Rectangle2D primaryScreenBounds = Screen.getPrimary().getVisualBounds();
  
          tabPane.setStyle("-fx-font-size: 12pt;"); // Set global size for the font
          // Create Tabs
          Tab tabA = new Tab();
  
          tabPane.setOnMouseClicked(new EventHandler&lt;MouseEvent&gt;()
          {
              private double sizeX, sizeY;
              private boolean first = true;
  
              @Override
              public void handle(MouseEvent me)
              {
                  if (first)
                  {
                      sizeX = mainPane.getWidth();
                      sizeY = mainPane.getHeight();
                      first = false;
                  }
  
                  if (me.getButton().equals(MouseButton.PRIMARY) &amp;&amp; me.getClickCount() % 2 == 0)
                  {
                      if (sizeX != mainPane.getWidth() || sizeY != mainPane.getHeight())
                      {
                          mainPane.setPrefSize(sizeX, sizeY);
  
                      }
                      else
                      {
                          mainPane.setPrefSize(primaryScreenBounds.getWidth(), primaryScreenBounds.getHeight());
                          //mainPane.toFront();
                      }
                  }
              }
          });
  
          tabA.setText("Main Component");
          tabA.setContextMenu(makeTabContextMenu(tabA, tabPane));  // Set right mouse click menu
          // Add something in Tab
          StackPane tabA_stack = new StackPane();
          tabA_stack.setAlignment(Pos.CENTER);
          tabA_stack.getChildren().add(scroll);
          tabA.setContent(tabA_stack);
          tabPane.getTabs().add(tabA);
  
          Tab tabB = new Tab();
          tabB.setText("Second Component");
          tabB.setContextMenu(makeTabContextMenu(tabB, tabPane));  // Set right mouse click menu
          // Add something in Tab
          StackPane tabB_stack = new StackPane();
          tabB_stack.setAlignment(Pos.CENTER);
          tabB_stack.getChildren().add(new Label("Label@Tab B"));
          tabB.setContent(tabB_stack);
          tabPane.getTabs().add(tabB);
  
          Tab tabC = new Tab();
          tabC.setText("Last Component");
          tabC.setContextMenu(makeTabContextMenu(tabC, tabPane));  // Set right mouse click menu
          // Add something in Tab
          StackPane tabC_vBox = new StackPane();
          tabC_vBox.setAlignment(Pos.CENTER);
          tabC_vBox.getChildren().add(new Label("Label@Tab C"));
          tabC.setContent(tabC_vBox);
          tabPane.getTabs().add(tabC);
  
          mainPane.setCenter(tabPane);
          mainPane.setPrefSize(300, 500);
          //mainPane.setLayoutX(5);     // Horizontal Position
          mainPane.setLayoutY(32);    // Vertical Position
  
          scroll.setPrefSize(395, 580);
          scroll.setLayoutX(5);
          scroll.setLayoutY(32);
  
          return mainPane;
      }
  </code></pre>
  
  <p>The problem is how I can cover the stage with the tab code when I double click on the tab name?</p>