Detect doubleclick on row of TableView JavaFX
JavaTableviewJavafx 8Java Problem Overview
I need to detect double clicks on a row of a TableView
.
How can I listen for double clicks on any part of the row and get all data of this row to print it to the console?
Java Solutions
Solution 1 - Java
TableView<MyType> table = new TableView<>();
//...
table.setRowFactory( tv -> {
TableRow<MyType> row = new TableRow<>();
row.setOnMouseClicked(event -> {
if (event.getClickCount() == 2 && (! row.isEmpty()) ) {
MyType rowData = row.getItem();
System.out.println(rowData);
}
});
return row ;
});
Here is a complete working example:
import java.util.Random;
import java.util.function.Function;
import javafx.application.Application;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ObservableValue;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableRow;
import javafx.scene.control.TableView;
import javafx.stage.Stage;
public class TableViewDoubleClickOnRow extends Application {
@Override
public void start(Stage primaryStage) {
TableView<Item> table = new TableView<>();
table.setRowFactory(tv -> {
TableRow<Item> row = new TableRow<>();
row.setOnMouseClicked(event -> {
if (event.getClickCount() == 2 && (! row.isEmpty()) ) {
Item rowData = row.getItem();
System.out.println("Double click on: "+rowData.getName());
}
});
return row ;
});
table.getColumns().add(column("Item", Item::nameProperty));
table.getColumns().add(column("Value", Item::valueProperty));
Random rng = new Random();
for (int i = 1 ; i <= 50 ; i++) {
table.getItems().add(new Item("Item "+i, rng.nextInt(1000)));
}
Scene scene = new Scene(table);
primaryStage.setScene(scene);
primaryStage.show();
}
private static <S,T> TableColumn<S,T> column(String title, Function<S, ObservableValue<T>> property) {
TableColumn<S,T> col = new TableColumn<>(title);
col.setCellValueFactory(cellData -> property.apply(cellData.getValue()));
return col ;
}
public static class Item {
private final StringProperty name = new SimpleStringProperty();
private final IntegerProperty value = new SimpleIntegerProperty();
public Item(String name, int value) {
setName(name);
setValue(value);
}
public StringProperty nameProperty() {
return name ;
}
public final String getName() {
return nameProperty().get();
}
public final void setName(String name) {
nameProperty().set(name);
}
public IntegerProperty valueProperty() {
return value ;
}
public final int getValue() {
return valueProperty().get();
}
public final void setValue(int value) {
valueProperty().set(value);
}
}
public static void main(String[] args) {
launch(args);
}
}
Solution 2 - Java
Example:
table.setOnMousePressed(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
if (event.isPrimaryButtonDown() && event.getClickCount() == 2) {
System.out.println(table.getSelectionModel().getSelectedItem());
}
}
});
If you are using custom selection model, then you can get the row from event, example:
table.setOnMousePressed(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
if (event.isPrimaryButtonDown() && event.getClickCount() == 2) {
Node node = ((Node) event.getTarget()).getParent();
TableRow row;
if (node instanceof TableRow) {
row = (TableRow) node;
} else {
// clicking on text part
row = (TableRow) node.getParent();
}
System.out.println(row.getItem());
}
}
});
Solution 3 - Java
This works for me:
table.setOnMouseClicked((MouseEvent event) -> {
if (event.getButton().equals(MouseButton.PRIMARY) && event.getClickCount() == 2){
System.out.println(table.getSelectionModel().getSelectedItem());
}
});
}
Solution 4 - Java
If you are using SceneBuilder
you can set your table's OnMouseClicked
to handleRowSelect()
method as shown below:
MyType temp;
Date lastClickTime;
@FXML
private void handleRowSelect() {
MyType row = myTableView.getSelectionModel().getSelectedItem();
if (row == null) return;
if(row != temp){
temp = row;
lastClickTime = new Date();
} else if(row == temp) {
Date now = new Date();
long diff = now.getTime() - lastClickTime.getTime();
if (diff < 300){ //another click registered in 300 millis
System.out.println("Edit dialog");
} else {
lastClickTime = new Date();
}
}
}
Solution 5 - Java
This answer has been tested:
table.setOnMouseClicked( event -> {
if( event.getClickCount() == 2 ) {
System.out.println( table.getSelectionModel().getSelectedItem());
}});
table.getSelectionModel().getSelectedItem()
can be use since we catch a double-click. One the first click the selection moves, on the second this handler is executed.
Solution 6 - Java
I had similar situation not to detect mouse double click event on TableView. Above all samples worked perfectly. but my application did not detect double click event at all.
But I found that if TableView is on editable, mouse double click event can not be detected !!
check your application if TableView is on editable like this.
tableView.setEditable( true );
if then, double click event only raises on same row selected.
Solution 7 - Java
Extending the previous answer:
The extra check ensures the selected row was double clicked - ignoring double clicks on empty rows or the column header
table.setRowFactory(param -> {
TableRow<MyType> row = new TableRow<>();
row.setOnMouseClicked(event -> Optional.ofNullable(row.getItem()).ifPresent(rowData-> {
if(event.getClickCount() == 2 && rowData.equals(table.getSelectionModel().getSelectedItem())){
System.out.println(rowData);
}
}));
return row;
});
```