How to display the content in a TableColumn

Hello

I want to display in a column only the label of an object and in the second column, based on the property of the object displayed in the first column, display a text field or a ChoiceBox.

Is this possible with Cell Factories? If this is not the case, what would you recommend to do that and keep the possibility to add lines on a specific index with the ObservableList.

It is of course possible. Just use the same property for two columns and carried out of the plant cell on one of them.

Example:

import java.util.Arrays;

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.ComboBox;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
import javafx.util.Callback;

public class CustomTableCellExample extends Application {

  @Override
  public void start(Stage primaryStage) {
  TableView table = new TableView<>();
  table.getItems().addAll(
     new Employee("Fred", "Human Resources"),
     new Employee("Jane", "Information Technology"),
     new Employee("Bob", "Management"),
     new Employee("Anne", "Management"),
     new Employee("Bill", "Finance")
  );
  TableColumn nameCol = new TableColumn<>("Name");
  nameCol.setCellValueFactory(new PropertyValueFactory("name"));

  TableColumn departmentLabelCol = new TableColumn<>("Department");
  departmentLabelCol.setCellValueFactory(new PropertyValueFactory("department"));

  TableColumn editDepartmentCol = new TableColumn<>("Edit Department");
  editDepartmentCol.setCellValueFactory(new PropertyValueFactory("department"));
  editDepartmentCol.setCellFactory(new Callback, TableCell>() {
      @Override
      public TableCell call(TableColumn param) {
        return new DepartmentCell();
      }
    });
  editDepartmentCol.setEditable(true);
  table.setEditable(true);

  table.getColumns().addAll(Arrays.asList(nameCol, departmentLabelCol, editDepartmentCol));

  BorderPane root = new BorderPane();
  root.setCenter(table);
  primaryStage.setScene(new Scene(root, 300, 400));
  primaryStage.show();
  }

  public static void main(String[] args) {
  launch(args);
  }

  static class DepartmentCell extends TableCell {
   private final ObservableList knownDepartments = FXCollections.observableArrayList("Human Resources", "Information Technology", "Finance");
   private final ComboBox comboBox = new ComboBox<>(knownDepartments);
   private final TextField textField = new TextField();
   DepartmentCell() {
     comboBox.setOnAction(new EventHandler() {
        @Override
        public void handle(ActionEvent event) {
          commitEdit(comboBox.getSelectionModel().getSelectedItem());
        }
     });
     textField.setOnAction(new EventHandler() {
        @Override
        public void handle(ActionEvent event) {
          commitEdit(textField.getText());
        }
     });
     textField.focusedProperty().addListener(new ChangeListener() {
        @Override
        public void changed(ObservableValue obs,
            Boolean oldValue, Boolean newValue) {
          if (! newValue) {
            commitEdit(textField.getText());
          }
        }
     });
   }
   @Override
   public void startEdit() {
     super.startEdit();
     if (! isEmpty() ) {
       setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
       setText(null);
       if (knownDepartments.contains(getItem())) {
         comboBox.getSelectionModel().select(getItem());
         setGraphic(comboBox);
       } else {
         textField.setText(getItem());
         setGraphic(textField);
       }
     }
   }
   @Override
   public void commitEdit(String item) {
     super.commitEdit(item);
     setContentDisplay(ContentDisplay.TEXT_ONLY);
     setText(item);
     setGraphic(null);
   }
   @Override
   public void cancelEdit() {
     super.cancelEdit();
     setContentDisplay(ContentDisplay.TEXT_ONLY);
     setText(getItem());
     setGraphic(null);
   }
   @Override
   public void updateItem(String item, boolean empty) {
     super.updateItem(item, empty);
     if (empty) {
       setText(null);
       setGraphic(null);
     } else {
       if (isEditing()) {
         setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
         if (knownDepartments.contains(item)) {
           comboBox.getSelectionModel().select(item);
           setGraphic(comboBox);
         } else {
           textField.setText(item);
           setGraphic(textField);
         }
       } else {
         setContentDisplay(ContentDisplay.TEXT_ONLY);
         setText(item);
       }
     }
   }
  }

  public static class Employee {
   private final StringProperty name ;
   private final StringProperty department ;
   public Employee(String name, String department) {
     this.name = new SimpleStringProperty(this, "name", name);
     this.department = new SimpleStringProperty(this, "department", department);
   }
   public StringProperty nameProperty() {
     return name ;
   }
   public final String getName() {
     return this.name.get();
   }
   public final void setName(String name) {
     this.name.set(name);
   }
   public StringProperty departmentProperty() {
     return department ;
   }
   public final String getDepartment() {
     return this.department.get();
   }
   public final void setDepartment(String department) {
     this.department.set(department);
   }
  }
}

Tags: Java

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How to display the content in a TableColumn

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