适配TableView菜单按钮

Question

问题

TableView 的 setTableMenuButtonVisible 提供了一种更改表列的可见性的机制。然而，该功能还有很多不足之处：

菜单应保持打开状态。我有 e。 G。 15 个表格列，点击菜单打开 -> 单击列 -> 单击菜单打开 -> 单击下一列 -> ... 更改多个列的可见性很痛苦
应该有全选/取消全选功能
应该有一种方法可以用自定义项目扩展菜单
取消选择所有列后，无法重新选择列，因为标题和表格菜单都消失了

换句话说：当前的表格菜单实现相当无用。

问题

有谁知道如何用合适的菜单替换现有的表格视图菜单？我看到了一个带有“.show-hide-columns-button”样式查找并添加事件过滤器的解决方案。然而那是两年前的事了，也许事情发生了变化。

非常感谢！

这就是我想要的方式，通过 ContextMenu 演示（即在表格上单击鼠标右键）：

public class TableViewSample extends Application {

    private final TableView table = new TableView();
    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(300);
        stage.setHeight(500);

        // create table columns
        TableColumn firstNameCol = new TableColumn("First Name");
        TableColumn lastNameCol = new TableColumn("Last Name");
        TableColumn emailCol = new TableColumn("Email");

        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);

        // add context menu
        CustomMenuItem cmi;
        ContextMenu cm = new ContextMenu();

        // select all item
        Label selectAll = new Label( "Select all");
        selectAll.addEventHandler( MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent event) {
                for( Object obj: table.getColumns()) {
                    ((TableColumn) obj).setVisible(true);
                }           }

        });

        cmi = new CustomMenuItem( selectAll);
        cmi.setHideOnClick(false);
        cm.getItems().add( cmi);

        // deselect all item
        Label deselectAll = new Label("Deselect all");
        deselectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent event) {
                for (Object obj : table.getColumns()) {
                    ((TableColumn) obj).setVisible(false);
                }
            }

        });

        cmi = new CustomMenuItem( deselectAll);
        cmi.setHideOnClick(false);
        cm.getItems().add( cmi);

        // separator
        cm.getItems().add( new SeparatorMenuItem());

        // menu item for all columns
        for( Object obj: table.getColumns()) {

            TableColumn tableColumn = (TableColumn) obj; 

            CheckBox cb = new CheckBox( tableColumn.getText());
            cb.selectedProperty().bindBidirectional( tableColumn.visibleProperty());

            cmi = new CustomMenuItem( cb);
            cmi.setHideOnClick(false);

            cm.getItems().add( cmi);
        }

        // set context menu
        table.setContextMenu(cm);

        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 0, 0, 10));
        vbox.getChildren().addAll(table);

        ((Group) scene.getRoot()).getChildren().addAll(vbox);

        stage.setScene(scene);
        stage.show();
    }
}

Answer 1

受到ControlsFX解决方案的启发，我自己使用反射解决了这个问题。如果有人有更好的想法和更干净的方法而不需要反思，我会洗耳恭听。我创建了一个 utils 类，以便与示例代码区分开来。

import java.lang.reflect.Field;

import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.scene.Node;
import javafx.scene.control.CheckBox;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.CustomMenuItem;
import javafx.scene.control.Label;
import javafx.scene.control.SeparatorMenuItem;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.input.MouseEvent;

import com.sun.javafx.scene.control.skin.TableHeaderRow;
import com.sun.javafx.scene.control.skin.TableViewSkin;

public class TableViewUtils {

    /**
     * Make table menu button visible and replace the context menu with a custom context menu via reflection.
     * The preferred height is modified so that an empty header row remains visible. This is needed in case you remove all columns, so that the menu button won't disappear with the row header.
     * IMPORTANT: Modification is only possible AFTER the table has been made visible, otherwise you'd get a NullPointerException
     * @param tableView
     */
    public static void addCustomTableMenu( TableView tableView) {

        // enable table menu
        tableView.setTableMenuButtonVisible(true);

        // get the table  header row
        TableHeaderRow tableHeaderRow = getTableHeaderRow((TableViewSkin) tableView.getSkin());

        // get context menu via reflection
        ContextMenu contextMenu = getContextMenu(tableHeaderRow);

        // setting the preferred height for the table header row
        // if the preferred height isn't set, then the table header would disappear if there are no visible columns
        // and with it the table menu button
        // by setting the preferred height the header will always be visible
        // note: this may need adjustments in case you have different heights in columns (eg when you use grouping)
        double defaultHeight = tableHeaderRow.getHeight();
        tableHeaderRow.setPrefHeight(defaultHeight);

        // modify the table menu
        contextMenu.getItems().clear();

        addCustomMenuItems( contextMenu, tableView);

    }

    /**
     * Create a menu with custom items. The important thing is that the menu remains open while you click on the menu items.
     * @param cm
     * @param table
     */
    private static void addCustomMenuItems( ContextMenu cm, TableView table) {

        // create new context menu
        CustomMenuItem cmi;

        // select all item
        Label selectAll = new Label("Select all");
        selectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent event) {
                for (Object obj : table.getColumns()) {
                    ((TableColumn<?, ?>) obj).setVisible(true);
                }
            }

        });

        cmi = new CustomMenuItem(selectAll);
        cmi.setHideOnClick(false);
        cm.getItems().add(cmi);

        // deselect all item
        Label deselectAll = new Label("Deselect all");
        deselectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent event) {

                for (Object obj : table.getColumns()) {
                    ((TableColumn<?, ?>) obj).setVisible(false);
                }
            }

        });

        cmi = new CustomMenuItem(deselectAll);
        cmi.setHideOnClick(false);
        cm.getItems().add(cmi);

        // separator
        cm.getItems().add(new SeparatorMenuItem());

        // menu item for each of the available columns
        for (Object obj : table.getColumns()) {

            TableColumn<?, ?> tableColumn = (TableColumn<?, ?>) obj;

            CheckBox cb = new CheckBox(tableColumn.getText());
            cb.selectedProperty().bindBidirectional(tableColumn.visibleProperty());

            cmi = new CustomMenuItem(cb);
            cmi.setHideOnClick(false);

            cm.getItems().add(cmi);
        }

    }

    /**
     * Find the TableHeaderRow of the TableViewSkin
     * 
     * @param tableSkin
     * @return
     */
    private static TableHeaderRow getTableHeaderRow(TableViewSkin<?> tableSkin) {

        // get all children of the skin
        ObservableList<Node> children = tableSkin.getChildren();

        // find the TableHeaderRow child
        for (int i = 0; i < children.size(); i++) {

            Node node = children.get(i);

            if (node instanceof TableHeaderRow) {
                return (TableHeaderRow) node;
            }

        }
        return null;
    }

    /**
     * Get the table menu, i. e. the ContextMenu of the given TableHeaderRow via
     * reflection
     * 
     * @param headerRow
     * @return
     */
    private static ContextMenu getContextMenu(TableHeaderRow headerRow) {

        try {

            // get columnPopupMenu field
            Field privateContextMenuField = TableHeaderRow.class.getDeclaredField("columnPopupMenu");

            // make field public
            privateContextMenuField.setAccessible(true);

            // get field
            ContextMenu contextMenu = (ContextMenu) privateContextMenuField.get(headerRow);

            return contextMenu;

        } catch (Exception ex) {
            ex.printStackTrace();
        }

        return null;
    }

}

使用示例：

import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class CustomTableMenuDemo extends Application {

    private final ObservableList<Person> 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("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[email protected]"),
            new Person("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[email protected]"),
            new Person("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[email protected]"),
            new Person("Isabella", "Johnson", "[email protected]"),
            new Person("Ethan", "Williams", "[email protected]"),
            new Person("Emma", "Jones", "[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) {

        stage.setTitle("Table Menu Demo");
        stage.setWidth(500);
        stage.setHeight(550);

        // create table columns
        TableColumn<Person, String> firstNameCol = new TableColumn<Person, String>("First Name");
        firstNameCol.setMinWidth(100);
        firstNameCol.setCellValueFactory(new PropertyValueFactory<Person, String>("firstName"));

        TableColumn<Person, String> lastNameCol = new TableColumn<Person, String>("Last Name");
        lastNameCol.setMinWidth(100);
        lastNameCol.setCellValueFactory(new PropertyValueFactory<Person, String>("lastName"));

        TableColumn<Person, String> emailCol = new TableColumn<Person, String>("Email");
        emailCol.setMinWidth(180);
        emailCol.setCellValueFactory(new PropertyValueFactory<Person, String>("email"));


        TableView<Person> tableView = new TableView<>();
        tableView.setPlaceholder(new Text("No content in table"));
        tableView.setItems(data);
        tableView.getColumns().addAll(firstNameCol, lastNameCol, emailCol);

        final VBox vbox = new VBox();
        vbox.setSpacing(5);
        vbox.setPadding(new Insets(10, 10, 10, 10));

        BorderPane borderPane = new BorderPane();
        borderPane.setCenter( tableView);

        vbox.getChildren().addAll( borderPane);

        Scene scene = new Scene( vbox);


        stage.setScene(scene);
        stage.show();

        // enable table menu button and add a custom menu to it
        TableViewUtils.addCustomTableMenu(tableView);
    }


    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);
        }
    }

}

截图：

自定义表格菜单正在运行，单击按钮时菜单保持打开状态：

Custom table menu in action

即使没有可见的列，自定义表格菜单仍然可用：

Custom table menu still available, even though no columns are visible

编辑：这是一个版本，它使用一些启发式方法而不是反射，并替换了内部鼠标事件处理程序（如果您想了解更多信息，请参阅 JavaFX 的 TableHeaderRow 类的源代码）：

import javafx.collections.ObservableList;
import javafx.event.EventHandler;
import javafx.geometry.Side;
import javafx.scene.Node;
import javafx.scene.control.CheckBox;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.CustomMenuItem;
import javafx.scene.control.Label;
import javafx.scene.control.SeparatorMenuItem;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.input.MouseEvent;

import com.sun.javafx.scene.control.skin.TableHeaderRow;
import com.sun.javafx.scene.control.skin.TableViewSkin;

public class TableViewUtils {

    /**
     * Make table menu button visible and replace the context menu with a custom context menu via reflection.
     * The preferred height is modified so that an empty header row remains visible. This is needed in case you remove all columns, so that the menu button won't disappear with the row header.
     * IMPORTANT: Modification is only possible AFTER the table has been made visible, otherwise you'd get a NullPointerException
     * @param tableView
     */
    public static void addCustomTableMenu( TableView tableView) {

        // enable table menu
        tableView.setTableMenuButtonVisible(true);

        // replace internal mouse listener with custom listener 
        setCustomContextMenu( tableView);

    }

    private static void setCustomContextMenu( TableView table) {

        TableViewSkin<?> tableSkin = (TableViewSkin<?>) table.getSkin();

        // get all children of the skin
        ObservableList<Node> children = tableSkin.getChildren();

        // find the TableHeaderRow child
        for (int i = 0; i < children.size(); i++) {

            Node node = children.get(i);

            if (node instanceof TableHeaderRow) {

                TableHeaderRow tableHeaderRow = (TableHeaderRow) node;

                // setting the preferred height for the table header row
                // if the preferred height isn't set, then the table header would disappear if there are no visible columns
                // and with it the table menu button
                // by setting the preferred height the header will always be visible
                // note: this may need adjustments in case you have different heights in columns (eg when you use grouping)
                double defaultHeight = tableHeaderRow.getHeight();
                tableHeaderRow.setPrefHeight(defaultHeight);

                for( Node child: tableHeaderRow.getChildren()) {

                    // child identified as cornerRegion in TableHeaderRow.java
                    if( child.getStyleClass().contains( "show-hide-columns-button")) {

                        // get the context menu
                        ContextMenu columnPopupMenu = createContextMenu( table);

                        // replace mouse listener
                        child.setOnMousePressed(me -> {
                            // show a popupMenu which lists all columns
                            columnPopupMenu.show(child, Side.BOTTOM, 0, 0);
                            me.consume();
                        });
                    }
                }

            }
        }
    }

    /**
     * Create a menu with custom items. The important thing is that the menu remains open while you click on the menu items.
     * @param cm
     * @param table
     */
    private static ContextMenu createContextMenu( TableView table) {

        ContextMenu cm = new ContextMenu();

        // create new context menu
        CustomMenuItem cmi;

        // select all item
        Label selectAll = new Label("Select all");
        selectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent event) {
                for (Object obj : table.getColumns()) {
                    ((TableColumn<?, ?>) obj).setVisible(true);
                }
            }

        });

        cmi = new CustomMenuItem(selectAll);
        cmi.setHideOnClick(false);
        cm.getItems().add(cmi);

        // deselect all item
        Label deselectAll = new Label("Deselect all");
        deselectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() {

            @Override
            public void handle(MouseEvent event) {

                for (Object obj : table.getColumns()) {
                    ((TableColumn<?, ?>) obj).setVisible(false);
                }
            }

        });

        cmi = new CustomMenuItem(deselectAll);
        cmi.setHideOnClick(false);
        cm.getItems().add(cmi);

        // separator
        cm.getItems().add(new SeparatorMenuItem());

        // menu item for each of the available columns
        for (Object obj : table.getColumns()) {

            TableColumn<?, ?> tableColumn = (TableColumn<?, ?>) obj;

            CheckBox cb = new CheckBox(tableColumn.getText());
            cb.selectedProperty().bindBidirectional(tableColumn.visibleProperty());

            cmi = new CustomMenuItem(cb);
            cmi.setHideOnClick(false);

            cm.getItems().add(cmi);
        }

        return cm;
    }
}

Answer 2

谢谢罗兰提供的解决方案。那很棒。我概括了你的解决方案来解决一些问题：

避免必须在之后为 TableView 分配新的上下文菜单显示的窗口（当 showAndWait() 应该时可能会导致困难使用。通过注册onShown事件解决了这个问题包含窗口。
修正点击时错位的bug 菜单已打开时按 + 按钮。（点击+同时
菜单可见将隐藏菜单。）
使用键盘工作
可以添加额外的菜单项

用途：

contextMenuHelper = new TableViewContextMenuHelper(tableView);
// Adding additional menu options
MenuItem exportMenuItem = new MenuItem("Export...");
contextMenuHelper.getAdditionalMenuItems().add(exportMenuItem);

也许有人觉得它有用，这是我的实现：

import java.util.ArrayList;
import java.util.List;
import java.util.function.Function;

import com.sun.javafx.scene.control.skin.TableHeaderRow;
import com.sun.javafx.scene.control.skin.TableViewSkin;

import javafx.collections.ObservableList;
import javafx.event.Event;
import javafx.geometry.Side;
import javafx.scene.Node;
import javafx.scene.control.CheckBox;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.CustomMenuItem;
import javafx.scene.control.Label;
import javafx.scene.control.MenuItem;
import javafx.scene.control.SeparatorMenuItem;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Region;

/**
 * Helper class to replace default column selection popup for TableView.
 *
 * <p>
 * The original idea credeted to Roland and was found on
 * {@link http://stackoverflow.com/questions/27739833/adapt-tableview-menu-button}
 * </p>
 * <p>
 * This improved version targets to solve several problems:
 * <ul>
 * <li>avoid to have to assign the TableView with the new context menu after the
 * window shown (it could cause difficulty when showAndWait() should be used. It
 * solves the problem by registering the onShown event of the containing Window.
 * </li>
 * <li>corrects the mispositioning bug when clicking the + button while the menu
 * is already on.</li>
 * <li>works using keyboard</li>
 * <li>possibility to add additional menu items</li>
 * </ul>
 * </p>
 * <p>
 * Usage from your code:
 *
 * <pre>
 * contextMenuHelper = new TableViewContextMenuHelper(this);
 * // Adding additional menu items
 * MenuItem exportMenuItem = new MenuItem("Export...");
 * contextMenuHelper.getAdditionalMenuItems().add(exportMenuItem);
 * </pre>
 * </p>
 *
 * @author Roland
 * @author bvissy
 *
 */
public class TableViewContextMenuHelper {

    private TableView<?> tableView;
    private ContextMenu columnPopupMenu;

    private boolean showAllColumnsOperators = true;

    private List<MenuItem> additionalMenuItems = new ArrayList<>();

    // Default key to show menu: Shortcut + Shift + Space
    private Function<KeyEvent, Boolean> showMenuByKeyboardCheck = 
        ke -> ke.getCode().equals(KeyCode.SPACE) && ke.isShortcutDown() && ke.isShiftDown();


    public TableViewContextMenuHelper(TableView<?> tableView) {
        super();
        this.tableView = tableView;

        // Hooking at the event when the whole window is shown 
        // and then implementing the event handler assignment
        tableView.sceneProperty().addListener(i -> {

            tableView.getScene().windowProperty().addListener(i2 -> {
                tableView.getScene().getWindow().setOnShown(i3 -> {
                    tableView.tableMenuButtonVisibleProperty().addListener((ob, o, n) -> {
                        if (n == true) {
                            registerListeners();
                        }
                    });
                    if (tableView.isTableMenuButtonVisible()) {
                        registerListeners();
                    }

                });

            });
        });
    }

    /**
     * Registers the listeners.
     */
    private void registerListeners() {
        final Node buttonNode = findButtonNode();

        // Keyboard listener on the table
        tableView.addEventHandler(KeyEvent.KEY_PRESSED, ke -> {
            if (showMenuByKeyboardCheck.apply(ke)) {
                showContextMenu();
                ke.consume();
            }
        });

        // replace mouse listener on "+" node
        buttonNode.setOnMousePressed(me -> {
            showContextMenu();
            me.consume();

        });

    }

    protected void showContextMenu() {
        final Node buttonNode = findButtonNode();

        setFixedHeader();

        // When the menu is already shown clicking the + button hides it.
        if (columnPopupMenu != null) {
            columnPopupMenu.hide();
        } else {
            // Show the menu
            final ContextMenu newColumnPopupMenu = createContextMenu();
            newColumnPopupMenu.setOnHidden(ev -> {
                columnPopupMenu = null;
            });
            columnPopupMenu = newColumnPopupMenu;
            columnPopupMenu.show(buttonNode, Side.BOTTOM, 0, 0);
            // Repositioning the menu to be aligned by its right side (keeping inside the table view)
            columnPopupMenu.setX(
                buttonNode.localToScreen(buttonNode.getBoundsInLocal()).getMaxX() 
                - columnPopupMenu.getWidth());
        }
    }



    private void setFixedHeader() {
        // setting the preferred height for the table header row
        // if the preferred height isn't set, then the table header would disappear if there are no visible columns
        // and with it the table menu button
        // by setting the preferred height the header will always be visible
        // note: this may need adjustments in case you have different heights in columns (eg when you use grouping)
        Region tableHeaderRow = getTableHeaderRow();
        double defaultHeight = tableHeaderRow.getHeight();
        tableHeaderRow.setPrefHeight(defaultHeight);
    }

    private Node findButtonNode() {
        TableHeaderRow tableHeaderRow = getTableHeaderRow();
        if (tableHeaderRow == null) {
            return null;
        }

        for (Node child : tableHeaderRow.getChildren()) {

            // child identified as cornerRegion in TableHeaderRow.java
            if (child.getStyleClass().contains("show-hide-columns-button")) {
                return child;
            }
        }
        return null;
    }

    private TableHeaderRow getTableHeaderRow() {
        TableViewSkin<?> tableSkin = (TableViewSkin<?>) tableView.getSkin();
        if (tableSkin == null) {
            return null;
        }

        // get all children of the skin
        ObservableList<Node> children = tableSkin.getChildren();

        // find the TableHeaderRow child
        for (int i = 0; i < children.size(); i++) {

            Node node = children.get(i);

            if (node instanceof TableHeaderRow) {
                return (TableHeaderRow) node;
            }
        }
        return null;
    }


    /**
     * Create a menu with custom items. The important thing is that the menu
     * remains open while you click on the menu items.
     *
     * @param cm
     * @param table
     */
    private ContextMenu createContextMenu() {

        ContextMenu cm = new ContextMenu();

        // create new context menu
        CustomMenuItem cmi;

        if (showAllColumnsOperators) {
            // select all item
            Label selectAll = new Label("Select all");
            selectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, event -> doSelectAll(event));

            cmi = new CustomMenuItem(selectAll);
            cmi.setOnAction(e -> doSelectAll(e));
            cmi.setHideOnClick(false);
            cm.getItems().add(cmi);

            // deselect all item
            Label deselectAll = new Label("Deselect all");
            deselectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, event -> doDeselectAll(event));

            cmi = new CustomMenuItem(deselectAll);
            cmi.setOnAction(e -> doDeselectAll(e));
            cmi.setHideOnClick(false);
            cm.getItems().add(cmi);

            // separator
            cm.getItems().add(new SeparatorMenuItem());
        }

        // menu item for each of the available columns
        for (Object obj : tableView.getColumns()) {

            TableColumn<?, ?> tableColumn = (TableColumn<?, ?>) obj;

            CheckBox cb = new CheckBox(tableColumn.getText());
            cb.selectedProperty().bindBidirectional(tableColumn.visibleProperty());

            cmi = new CustomMenuItem(cb);
            cmi.setOnAction(e -> {
                cb.setSelected(!cb.isSelected());
                e.consume();
            });
            cmi.setHideOnClick(false);

            cm.getItems().add(cmi);
        }

        if (!additionalMenuItems.isEmpty()) {
            cm.getItems().add(new SeparatorMenuItem());
            cm.getItems().addAll(additionalMenuItems);
        }

        return cm;
    }

    protected void doDeselectAll(Event e) {
        for (Object obj : tableView.getColumns()) {
            ((TableColumn<?, ?>) obj).setVisible(false);
        }
        e.consume();
    }

    protected void doSelectAll(Event e) {
        for (Object obj : tableView.getColumns()) {
            ((TableColumn<?, ?>) obj).setVisible(true);
        }
        e.consume();
    }

    public boolean isShowAllColumnsOperators() {
        return showAllColumnsOperators;
    }

    /**
     * Sets whether the Select all/Deselect all buttons are visible
     *
     * @param showAllColumnsOperators
     */
    public void setShowAllColumnsOperators(boolean showAllColumnsOperators) {
        this.showAllColumnsOperators = showAllColumnsOperators;
    }

    public List<MenuItem> getAdditionalMenuItems() {
        return additionalMenuItems;
    }

    public Function<KeyEvent, Boolean> getShowMenuByKeyboardCheck() {
        return showMenuByKeyboardCheck;
    }

    /**
     * Overrides the keypress check to show the menu. Default is Shortcut +
     * Shift + Space.
     *
     * <p>
     * To disable keyboard shortcut use the <code>e -> false</code> function.
     * </p>
     *
     * @param showMenuByKeyboardCheck
     */
    public void setShowMenuByKeyboardCheck(Function<KeyEvent, Boolean> showMenuByKeyboardCheck) {
        this.showMenuByKeyboardCheck = showMenuByKeyboardCheck;
    }

}

Answer 3

更新

当您取消选择所有列时，标题仍然可见，菜单按钮也是可见的。 JDK 8u72

Answer 4

我尝试实施Balage1551的解决方案。

对于我的应用程序，我必须更改 TableViewContextMenuHelper(...) 中的侦听器。

如果没有此更改，每次更改实际场景时我都会收到 NullPointerException，然后返回到包含表格视图的屏幕。

我希望其他人可能会发现这有帮助！

    // Hooking at the event when the whole window is shown 
    // and then implementing the event handler assignment
    /*tableView.sceneProperty().addListener(i -> {

        tableView.getScene().windowProperty().addListener(i2 -> {
            tableView.getScene().getWindow().setOnShown(i3 -> {
                tableView.tableMenuButtonVisibleProperty().addListener((ob, o, n) -> {
                    if (n == true) {
                        registerListeners();
                    }
                });
                if (tableView.isTableMenuButtonVisible()) {
                    registerListeners();
                }

            });

        });
    });*/

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^旧！^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^ vvvvvvvvvvvvvvvvvvvvvvvvvvv新！vvvvvvvvvvvvvvvvvvvvvvvvvvvvvv

    tableView.skinProperty().addListener((a, b, newSkin) -> {
        tableView.tableMenuButtonVisibleProperty().addListener((ob, o, n) -> {
            if (n == true) {
                registerListeners();
            }
        });
        if (tableView.isTableMenuButtonVisible()) {
            registerListeners();
        }
    });

此调整允许在您使用以下命令打开其他场景时再次初始化 TableViewContextMenuHelper：

javafx.stage.Stage.setScreen(...);

Answer 5

我有一个表（实际上是一堆表），其中的列不固定。每次更改列时，上述解决方案都会重新设置列列表。因此，如果隐藏了名为“衣领尺寸”的列，当使用一组新数据刷新表格时，它会再次出现。

这可能很粗糙，但我添加了一个 Set 来存储上次隐藏的列的名称，然后这次重新隐藏它们。要点是一个集合：

private Set<String> turnedOff = new HashSet<>();

然后管理从集合中添加和删除项目。我需要在表列上添加一个侦听器以隐藏与之前隐藏的名称匹配的新列。

有关如何实现这一目标的其他想法将不胜感激。

import java.util.ArrayList; import java.util.HashSet; import java.util.List; import java.util.Set; import java.util.function.Function; import com.sun.javafx.scene.control.skin.TableHeaderRow; import com.sun.javafx.scene.control.skin.TableViewSkin; import javafx.collections.ListChangeListener; import javafx.collections.ObservableList; import javafx.event.Event; import javafx.geometry.Side; import javafx.scene.Node; import javafx.scene.control.CheckBox; import javafx.scene.control.ContextMenu; import javafx.scene.control.CustomMenuItem; import javafx.scene.control.Label; import javafx.scene.control.MenuItem; import javafx.scene.control.SeparatorMenuItem; import javafx.scene.control.TableColumn; import javafx.scene.control.TableView; import javafx.scene.input.KeyCode; import javafx.scene.input.KeyEvent; import javafx.scene.input.MouseEvent; import javafx.scene.layout.Region; public class TableViewContextMenuHelper { private Set<String> turnedOff = new HashSet<>(); private TableView<?> tableView; private ContextMenu columnPopupMenu; private boolean showAllColumnsOperators = true; private List<MenuItem> additionalMenuItems = new ArrayList<>(); // Default key to show menu: Shortcut + Shift + Space private Function<KeyEvent, Boolean> showMenuByKeyboardCheck = ke -> ke.getCode().equals(KeyCode.SPACE) && ke.isShortcutDown() && ke.isShiftDown(); public TableViewContextMenuHelper(TableView<?> tableView) { super(); this.tableView = tableView; tableView.skinProperty().addListener((a, b, newSkin) -> { tableView.tableMenuButtonVisibleProperty().addListener((ob, o, n) -> { if (n == true) { registerListeners(); } }); if (tableView.isTableMenuButtonVisible()) { registerListeners(); } }); } /** * Registers the listeners. */ private void registerListeners() { final Node buttonNode = findButtonNode(); // Keyboard listener on the table tableView.addEventHandler(KeyEvent.KEY_PRESSED, ke -> { if (showMenuByKeyboardCheck.apply(ke)) { showContextMenu(); ke.consume(); } }); // replace mouse listener on "+" node buttonNode.setOnMousePressed(me -> { showContextMenu(); me.consume(); }); tableView.getColumns().addListener(new ListChangeListener<TableColumn<?,?>>(){ @Override public void onChanged(javafx.collections.ListChangeListener.Change<? extends TableColumn<?, ?>> c) { while(c.next()){ if(c.getAddedSize()>0){ // hide "turned off" columns for(TableColumn<?, ?> tc:c.getAddedSubList()){ if(turnedOff.contains(tc.getText())){ tc.setVisible(false); } } } } } }); } protected void showContextMenu() { final Node buttonNode = findButtonNode(); setFixedHeader(); // When the menu is already shown clicking the + button hides it. if (columnPopupMenu != null) { columnPopupMenu.hide(); } else { // Show the menu final ContextMenu newColumnPopupMenu = createContextMenu(); newColumnPopupMenu.setOnHidden(ev -> { columnPopupMenu = null; }); columnPopupMenu = newColumnPopupMenu; columnPopupMenu.show(buttonNode, Side.BOTTOM, 0, 0); // Repositioning the menu to be aligned by its right side (keeping inside the table view) columnPopupMenu.setX( buttonNode.localToScreen(buttonNode.getBoundsInLocal()).getMaxX() - columnPopupMenu.getWidth()); } } private void setFixedHeader() { // setting the preferred height for the table header row // if the preferred height isn't set, then the table header would disappear if there are no visible columns // and with it the table menu button // by setting the preferred height the header will always be visible // note: this may need adjustments in case you have different heights in columns (eg when you use grouping) Region tableHeaderRow = getTableHeaderRow(); double defaultHeight = tableHeaderRow.getHeight(); tableHeaderRow.setPrefHeight(defaultHeight); } private Node findButtonNode() { TableHeaderRow tableHeaderRow = getTableHeaderRow(); if (tableHeaderRow == null) { return null; } for (Node child : tableHeaderRow.getChildren()) { // child identified as cornerRegion in TableHeaderRow.java if (child.getStyleClass().contains("show-hide-columns-button")) { return child; } } return null; } private TableHeaderRow getTableHeaderRow() { TableViewSkin<?> tableSkin = (TableViewSkin<?>) tableView.getSkin(); if (tableSkin == null) { return null; } // get all children of the skin ObservableList<Node> children = tableSkin.getChildren(); // find the TableHeaderRow child for (int i = 0; i < children.size(); i++) { Node node = children.get(i); if (node instanceof TableHeaderRow) { return (TableHeaderRow) node; } } return null; } /** * Create a menu with custom items. The important thing is that the menu * remains open while you click on the menu items. * * @param cm * @param table */ private ContextMenu createContextMenu() { ContextMenu cm = new ContextMenu(); // create new context menu CustomMenuItem cmi; if (showAllColumnsOperators) { // select all item Label selectAll = new Label("Select all"); selectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, event -> doSelectAll(event)); cmi = new CustomMenuItem(selectAll); cmi.setOnAction(e -> doSelectAll(e)); cmi.setHideOnClick(false); cm.getItems().add(cmi); // deselect all item Label deselectAll = new Label("Deselect all"); deselectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, event -> doDeselectAll(event)); cmi = new CustomMenuItem(deselectAll); cmi.setOnAction(e -> doDeselectAll(e)); cmi.setHideOnClick(false); cm.getItems().add(cmi); // separator cm.getItems().add(new SeparatorMenuItem()); } // menu item for each of the available columns for (Object obj : tableView.getColumns()) { TableColumn<?, ?> tableColumn = (TableColumn<?, ?>) obj; CheckBox cb = new CheckBox(tableColumn.getText()); cb.selectedProperty().bindBidirectional(tableColumn.visibleProperty()); cmi = new CustomMenuItem(cb); if(turnedOff.contains(cb.getText())){ cb.setSelected(false); } cmi.setOnAction(e -> { cb.setSelected(!cb.isSelected()); if(cb.isSelected()){ turnedOff.remove(cb.getText()); } else { turnedOff.add(cb.getText()); } e.consume(); }); cmi.setHideOnClick(false); cm.getItems().add(cmi); } if (!additionalMenuItems.isEmpty()) { cm.getItems().add(new SeparatorMenuItem()); cm.getItems().addAll(additionalMenuItems); } return cm; } protected void doDeselectAll(Event e) { for (TableColumn<?, ?> obj : tableView.getColumns()) { turnedOff.add(obj.getText()); obj.setVisible(false); } e.consume(); } protected void doSelectAll(Event e) { for (TableColumn<?, ?> obj : tableView.getColumns()) { turnedOff.remove(obj.getText()); obj.setVisible(true); } e.consume(); } public boolean isShowAllColumnsOperators() { return showAllColumnsOperators; } /** * Sets whether the Select all/Deselect all buttons are visible * * @param showAllColumnsOperators */ public void setShowAllColumnsOperators(boolean showAllColumnsOperators) { this.showAllColumnsOperators = showAllColumnsOperators; } public List<MenuItem> getAdditionalMenuItems() { return additionalMenuItems; } public Function<KeyEvent, Boolean> getShowMenuByKeyboardCheck() { return showMenuByKeyboardCheck; } /** * Overrides the keypress check to show the menu. Default is Shortcut + * Shift + Space. * * * To disable keyboard shortcut use the <code>e -> false</code> function. * * * @param showMenuByKeyboardCheck */ public void setShowMenuByKeyboardCheck(Function<KeyEvent, Boolean> showMenuByKeyboardCheck) { this.showMenuByKeyboardCheck = showMenuByKeyboardCheck; } }

Answer 6

import java.util.ArrayList; import java.util.List; import java.util.function.Function; import javafx.beans.property.BooleanProperty; import javafx.collections.ObservableList; import javafx.event.Event; import javafx.geometry.Side; import javafx.scene.Node; import javafx.scene.control.CheckBox; import javafx.scene.control.ContextMenu; import javafx.scene.control.Control; import javafx.scene.control.CustomMenuItem; import javafx.scene.control.Label; import javafx.scene.control.MenuItem; import javafx.scene.control.SeparatorMenuItem; import javafx.scene.control.TableColumnBase; import javafx.scene.control.TableView; import javafx.scene.control.TreeTableView; import javafx.scene.control.skin.TableHeaderRow; import javafx.scene.control.skin.TableViewSkinBase; import javafx.scene.input.KeyCode; import javafx.scene.input.KeyEvent; import javafx.scene.input.MouseEvent; import javafx.scene.layout.Region; import org.jetbrains.annotations.NotNull; /** * Helper class to replace default column selection popup for TableView. * * * The original idea credeted to Roland and was found on https://stackoverflow.com/questions/27739833/adapt-tableview-menu-button * * * This improved version targets to solve several problems: * <ul> * <li>avoid to have to assign the TableView with the new context menu after the * window shown (it could cause difficulty when showAndWait() should be used. It * solves the problem by registering the onShown event of the containing Window. * </li> * <li>corrects the mispositioning bug when clicking the + button while the menu * is already on.</li> * <li>works using keyboard</li> * <li>possibility to add additional menu items</li> * </ul> * * * Usage from your code: * * <pre> * contextMenuHelper = new TableViewContextMenuHelper(this); * // Adding additional menu items * MenuItem exportMenuItem = new MenuItem("Export..."); * contextMenuHelper.getAdditionalMenuItems().add(exportMenuItem); * </pre> * * * https://stackoverflow.com/questions/27739833/adapt-tableview-menu-button * * @author Roland * @author bvissy */ public class TreeColumnMenuHelper { private final Control tableView; private final List<MenuItem> additionalMenuItems = new ArrayList<>(); private ContextMenu columnPopupMenu; private boolean showAllColumnsOperators = true; // Default key to show menu: Shortcut (CTRL on windows) + Shift + Space private Function<KeyEvent, Boolean> showMenuByKeyboardCheck = ke -> ke.getCode().equals(KeyCode.SPACE) && ke.isShortcutDown() && ke.isShiftDown(); public TreeColumnMenuHelper(TableView tableView) { this((Control) tableView); } public TreeColumnMenuHelper(TreeTableView tableView) { this((Control) tableView); } private TreeColumnMenuHelper(Control tableView) { super(); this.tableView = tableView; if (tableView.getSkin() != null) { registerListeners(); return; } // listen to skin change - this should happen once the table is shown tableView.skinProperty().addListener((a, b, newSkin) -> { final BooleanProperty tableMenuButtonVisibleProperty = getTableMenuButtonVisibleProperty(tableView); tableMenuButtonVisibleProperty.addListener((ob, o, n) -> { if (n) { registerListeners(); } }); if (tableMenuButtonVisibleProperty.get()) { registerListeners(); } }); } /** * * @return property that controls the menu button in the corner of the table */ private BooleanProperty getTableMenuButtonVisibleProperty(@NotNull Control tableView) { if(tableView instanceof TableView tab) { return tab.tableMenuButtonVisibleProperty(); } if(tableView instanceof TreeTableView tree) { return tree.tableMenuButtonVisibleProperty(); } throw new IllegalArgumentException("Argument is no TableView or TreeTableView. Actual class: "+tableView.getClass().getName()); } /** * Get columns of the table or treetable * @return list of columns */ private static List<? extends TableColumnBase> getColumns(Control table) { if (table instanceof TableView tab) { return tab.getColumns(); } else if (table instanceof TreeTableView tree) { return tree.getColumns(); } else { throw new IllegalArgumentException( "Table argument is no TreeTableView or TableView. Actual class: " + table.getClass() .getName()); } } /** * Registers the listeners. */ private void registerListeners() { final Node buttonNode = findButtonNode(); // Keyboard listener on the table tableView.addEventHandler(KeyEvent.KEY_PRESSED, ke -> { if (showMenuByKeyboardCheck.apply(ke)) { showContextMenu(); ke.consume(); } }); // replace mouse listener on "+" node assert buttonNode != null; buttonNode.setOnMousePressed(me -> { showContextMenu(); me.consume(); }); } protected void showContextMenu() { final Node buttonNode = findButtonNode(); setFixedHeader(); // When the menu is already shown clicking the + button hides it. if (columnPopupMenu != null) { columnPopupMenu.hide(); } else { // Show the menu final ContextMenu newColumnPopupMenu = createContextMenu(); newColumnPopupMenu.setOnHidden(ev -> columnPopupMenu = null); columnPopupMenu = newColumnPopupMenu; columnPopupMenu.show(buttonNode, Side.BOTTOM, 0, 0); // Repositioning the menu to be aligned by its right side (keeping inside the table view) columnPopupMenu.setX( buttonNode.localToScreen(buttonNode.getBoundsInLocal()).getMaxX() - columnPopupMenu .getWidth()); } } private void setFixedHeader() { // setting the preferred height for the table header row // if the preferred height isn't set, then the table header would disappear if there are no visible columns // and with it the table menu button // by setting the preferred height the header will always be visible // note: this may need adjustments in case you have different heights in columns (eg when you use grouping) Region tableHeaderRow = getTableHeaderRow(); double defaultHeight = tableHeaderRow.getHeight(); tableHeaderRow.setPrefHeight(defaultHeight); } private Node findButtonNode() { TableHeaderRow tableHeaderRow = getTableHeaderRow(); if (tableHeaderRow == null) { return null; } for (Node child : tableHeaderRow.getChildren()) { // child identified as cornerRegion in TableHeaderRow.java if (child.getStyleClass().contains("show-hide-columns-button")) { return child; } } return null; } private TableHeaderRow getTableHeaderRow() { TableViewSkinBase tableSkin = (TableViewSkinBase) tableView.getSkin(); if (tableSkin == null) { return null; } // get all children of the skin ObservableList<Node> children = tableSkin.getChildren(); // find the TableHeaderRow child for (Node node : children) { if (node instanceof TableHeaderRow header) { return header; } } return null; } /** * Create a menu with custom items. The important thing is that the menu remains open while you * click on the menu items. */ private ContextMenu createContextMenu() { ContextMenu cm = new ContextMenu(); // create new context menu CustomMenuItem cmi; if (showAllColumnsOperators) { // select all item Label selectAll = new Label("Select all"); selectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, this::doSelectAll); cmi = new CustomMenuItem(selectAll); cmi.setOnAction(this::doSelectAll); cmi.setHideOnClick(false); cm.getItems().add(cmi); // deselect all item Label deselectAll = new Label("Deselect all"); deselectAll.addEventHandler(MouseEvent.MOUSE_CLICKED, this::doDeselectAll); cmi = new CustomMenuItem(deselectAll); cmi.setOnAction(this::doDeselectAll); cmi.setHideOnClick(false); cm.getItems().add(cmi); // separator cm.getItems().add(new SeparatorMenuItem()); } if (!additionalMenuItems.isEmpty()) { cm.getItems().addAll(additionalMenuItems); cm.getItems().add(new SeparatorMenuItem()); } // menu item for each of the available columns for (TableColumnBase col : getColumns(tableView)) { CheckBox cb = new CheckBox(col.getText()); cb.selectedProperty().bindBidirectional(col.visibleProperty()); cmi = new CustomMenuItem(cb); cmi.setOnAction(e -> { cb.setSelected(!cb.isSelected()); e.consume(); }); cmi.setHideOnClick(false); cm.getItems().add(cmi); } return cm; } protected void setAllVisible(boolean visible) { for (TableColumnBase col : getColumns(tableView)) { col.setVisible(visible); } } protected void doDeselectAll(Event e) { setAllVisible(false); e.consume(); } protected void doSelectAll(Event e) { setAllVisible(true); e.consume(); } public boolean isShowAllColumnsOperators() { return showAllColumnsOperators; } /** * Sets whether the Select all/Deselect all buttons are visible * * @param showAllColumnsOperators */ public void setShowAllColumnsOperators(boolean showAllColumnsOperators) { this.showAllColumnsOperators = showAllColumnsOperators; } public List<MenuItem> getAdditionalMenuItems() { return additionalMenuItems; } public Function<KeyEvent, Boolean> getShowMenuByKeyboardCheck() { return showMenuByKeyboardCheck; } /** * Overrides the keypress check to show the menu. Default is Shortcut + Shift + Space. * * * To disable keyboard shortcut use the <code>e -> false</code> function. * * * @param showMenuByKeyboardCheck */ public void setShowMenuByKeyboardCheck(Function<KeyEvent, Boolean> showMenuByKeyboardCheck) { this.showMenuByKeyboardCheck = showMenuByKeyboardCheck; } }

Answer 7

import javafx.collections.ObservableList; import javafx.event.EventHandler; import javafx.geometry.Side; import javafx.scene.Node; import javafx.scene.control.CheckBox; import javafx.scene.control.ContextMenu; import javafx.scene.control.CustomMenuItem; import javafx.scene.control.Label; import javafx.scene.control.SeparatorMenuItem; import javafx.scene.control.TableColumn; import javafx.scene.control.TableView; import javafx.scene.input.MouseEvent; import javafx.scene.control.skin.TableHeaderRow; import javafx.scene.control.skin.TableViewSkin; public class TableUtils { /** * Make table menu button visible and replace the context menu with a custom context menu via reflection. * The preferred height is modified so that an empty header row remains visible. This is needed in case you remove all columns, so that the menu button won't disappear with the row header. * IMPORTANT: Modification is only possible AFTER the table has been made visible, otherwise you'd get a NullPointerException * @param tableView */ public static void addCustomTableMenu( TableView<?> tableView) { // enable table menu tableView.setTableMenuButtonVisible(true); // replace internal mouse listener with custom listener setCustomContextMenu( tableView); } private static void setCustomContextMenu( TableView<?> table) { TableViewSkin<?> tableSkin = (TableViewSkin<?>) table.getSkin(); // get all children of the skin ObservableList<Node> children = tableSkin.getChildren(); // find the TableHeaderRow child for (int i = 0; i < children.size(); i++) { Node node = children.get(i); if (node instanceof TableHeaderRow) { TableHeaderRow tableHeaderRow = (TableHeaderRow) node; // setting the preferred height for the table header row // if the preferred height isn't set, then the table header would disappear if there are no visible columns // and with it the table menu button // by setting the preferred height the header will always be visible // note: this may need adjustments in case you have different heights in columns (eg when you use grouping) double defaultHeight = tableHeaderRow.getHeight(); tableHeaderRow.setPrefHeight(defaultHeight); for( Node child: tableHeaderRow.getChildren()) { // child identified as cornerRegion in TableHeaderRow.java if( child.getStyleClass().contains( "show-hide-columns-button")) { // get the context menu ContextMenu columnPopupMenu = createContextMenu( table); // replace mouse listener child.setOnMousePressed(me -> { // show a popupMenu which lists all columns columnPopupMenu.show(child, Side.BOTTOM, 0, 0); me.consume(); }); } } } } } /** * Create a menu with custom items. The important thing is that the menu remains open while you click on the menu items. * @param cm * @param table */ private static ContextMenu createContextMenu( TableView<?> table) { ContextMenu cm = new ContextMenu(); // create new context menu CustomMenuItem cmi; // select all item Label showAll = new Label("Show all"); showAll.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() { @Override public void handle(MouseEvent event) { for (Object obj : table.getColumns()) { ((TableColumn<?, ?>) obj).setVisible(true); } } }); cmi = new CustomMenuItem(showAll); cmi.setHideOnClick(false); cm.getItems().add(cmi); // De-select all item Label hideAll = new Label("Hide all"); hideAll.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() { @Override public void handle(MouseEvent event) { for (Object obj : table.getColumns()) { ((TableColumn<?, ?>) obj).setVisible(false); } } }); cmi = new CustomMenuItem(hideAll); cmi.setHideOnClick(false); cm.getItems().add(cmi); // separator cm.getItems().add(new SeparatorMenuItem()); // menu item for each of the available columns for (Object obj : table.getColumns()) { TableColumn<?, ?> tableColumn = (TableColumn<?, ?>) obj; CheckBox cb = new CheckBox(tableColumn.getText()); cb.selectedProperty().bindBidirectional(tableColumn.visibleProperty()); cmi = new CustomMenuItem(cb); cmi.setHideOnClick(false); cm.getItems().add(cmi); } return cm; }

然后，在我的 TableView 中设置项目后，我只需将您在下面看到的第二行添加到我的控制器类中：

inventoryTable.setItems(inventoryTable.getItems()); TableUtils.addCustomTableMenu(inventoryTable);

适配TableView菜单按钮

问题描述投票：0回答：8

8个回答

最新问题

适配TableView菜单按钮

问题描述 投票：0回答：8

8个回答

最新问题

问题描述投票：0回答：8