检测双击 TableView JavaFX 的行

Question

我需要检测对表格视图行的双击。

如何监听该行任何部分的双击并获取该行的所有数据以将其打印到控制台？

Answer 1

这适用于我：

table.setOnMouseClicked((MouseEvent event) -> {
            if (event.getButton().equals(MouseButton.PRIMARY) && event.getClickCount() == 2){
                System.out.println(table.getSelectionModel().getSelectedItem());
            }
        });
    }

Answer 2

例子：

table.setOnMousePressed(new EventHandler<MouseEvent>() {
    @Override 
    public void handle(MouseEvent event) {
        if (event.isPrimaryButtonDown() && event.getClickCount() == 2) {
            System.out.println(table.getSelectionModel().getSelectedItem());                   
        }
    }
});

如果使用自定义选择模型，则可以从事件中获取行，例如：

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());
        }
    }
});

Answer 3

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 ;
});

这是一个完整的工作示例：

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);
    }
}