Can't do a cell to give me a sum of the digits above him.

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• How can I select multiple cells in tableview with javafx only with the mouse?

  I have an application with a tableview in javafx and I want to select more than one cell only with the mouse (something like the selection that exists in excel). I tried with setOnMouseDragged but I cant'n do something because the selection only returns the cell from which the selection started. Can someone help me?

  For events of the mouse to be propagated to other than the node in which nodes the drag started, you must activate a 'full-drag-release press gesture' by calling startFullDrag (...) on the original node. (For more details, see the Javadocs MouseEvent and MouseDragEvent .) You can register for MouseDragEvents on cells of the table in order to receive and process these events.

  Here's a simple example: the user interface is not supposed to be perfect, but it will give you the idea.

  import java.util.Arrays;
  
  import javafx.application.Application;
  import javafx.beans.property.SimpleStringProperty;
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  import javafx.scene.Scene;
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  import javafx.scene.control.TableCell;
  import javafx.scene.control.TableColumn;
  import javafx.scene.control.TableView;
  import javafx.scene.control.cell.PropertyValueFactory;
  import javafx.scene.input.MouseDragEvent;
  import javafx.scene.input.MouseEvent;
  import javafx.scene.layout.VBox;
  import javafx.scene.text.Font;
  import javafx.stage.Stage;
  import javafx.util.Callback;
  
  public class DragSelectionTable extends Application {
  
      private TableView table = new TableView();
      private final ObservableList data =
          FXCollections.observableArrayList(
              new Person("Jacob", "Smith", "[email protected]"),
              new Person("Isabella", "Johnson", "[email protected]"),
              new Person("Ethan", "Williams", "[email protected]"),
              new Person("Emma", "Jones", "[email protected]"),
              new Person("Michael", "Brown", "[email protected]")
          );
  
      public static void main(String[] args) {
          launch(args);
      }
  
      @Override
      public void start(Stage stage) {
          Scene scene = new Scene(new Group());
          stage.setTitle("Table View Sample");
          stage.setWidth(450);
          stage.setHeight(500);
  
          final Label label = new Label("Address Book");
          label.setFont(new Font("Arial", 20));
  
          table.setEditable(true);
  
          TableColumn firstNameCol = new TableColumn<>("First Name");
          firstNameCol.setMinWidth(100);
          firstNameCol.setCellValueFactory(
                  new PropertyValueFactory("firstName"));
  
          TableColumn lastNameCol = new TableColumn<>("Last Name");
          lastNameCol.setMinWidth(100);
          lastNameCol.setCellValueFactory(
                  new PropertyValueFactory("lastName"));
  
          TableColumn emailCol = new TableColumn<>("Email");
          emailCol.setMinWidth(200);
          emailCol.setCellValueFactory(
                  new PropertyValueFactory("email"));
  
          final Callback, TableCell> cellFactory = new DragSelectionCellFactory();
          firstNameCol.setCellFactory(cellFactory);
          lastNameCol.setCellFactory(cellFactory);
          emailCol.setCellFactory(cellFactory);
  
          table.setItems(data);
          table.getColumns().addAll(Arrays.asList(firstNameCol, lastNameCol, emailCol));
  
          table.getSelectionModel().setCellSelectionEnabled(true);
          table.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
  
          final VBox vbox = new VBox();
          vbox.setSpacing(5);
          vbox.setPadding(new Insets(10, 0, 0, 10));
          vbox.getChildren().addAll(label, table);
  
          ((Group) scene.getRoot()).getChildren().addAll(vbox);
  
          stage.setScene(scene);
          stage.show();
      }
  
      public static class DragSelectionCell extends TableCell {
  
          public DragSelectionCell() {
              setOnDragDetected(new EventHandler() {
                  @Override
                  public void handle(MouseEvent event) {
                      startFullDrag();
                      getTableColumn().getTableView().getSelectionModel().select(getIndex(), getTableColumn());
                  }
              });
              setOnMouseDragEntered(new EventHandler() {
  
                  @Override
                  public void handle(MouseDragEvent event) {
                      getTableColumn().getTableView().getSelectionModel().select(getIndex(), getTableColumn());
                  }
  
              });
          }
          @Override
          public void updateItem(String item, boolean empty) {
              super.updateItem(item, empty);
              if (empty) {
                  setText(null);
              } else {
                  setText(item);
              }
          }
  
      }
  
      public static class DragSelectionCellFactory implements Callback, TableCell> {
  
          @Override
          public TableCell call(final TableColumn col) {
              return new DragSelectionCell();
          }
  
      }
  
      public static class Person {
  
          private final SimpleStringProperty firstName;
          private final SimpleStringProperty lastName;
          private final SimpleStringProperty email;
  
          private Person(String fName, String lName, String email) {
              this.firstName = new SimpleStringProperty(fName);
              this.lastName = new SimpleStringProperty(lName);
              this.email = new SimpleStringProperty(email);
          }
  
          public String getFirstName() {
              return firstName.get();
          }
  
          public void setFirstName(String fName) {
              firstName.set(fName);
          }
  
          public String getLastName() {
              return lastName.get();
          }
  
          public void setLastName(String fName) {
              lastName.set(fName);
          }
  
          public String getEmail() {
              return email.get();
          }
  
          public void setEmail(String fName) {
              email.set(fName);
          }
      }
  
  }
  

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  Thank you and my apologies for the tone.

  Hi Sonia-funnelweb

  We Apologize for the inconvenience you.

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  Concerning

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