javafx - 选择第一个/最后一个清除锚信息 - MultipleSelectionModel

Question

我有桌子table.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);。我需要实现 a 的最后/第一行TableView。我用过table.scrollTo(ind); table.getSelectionModel().clearAndSelect(ind)。这将滚动到第一行并选择它。但是如果我尝试选择多行（使用鼠标右键和+ SHIFT）它不会选择第一行和按下的行之间的行范围，但它只是在所选行处设置锚点。

到目前为止我观察到的：

来自伪类 css 信息。第一行被选中，聚焦 - 这是预期的。
table.getSelectionModel().selectedIndexProperty() table.getSelectionModel().getSelectedIndices()分别显示 0 和 [0] - 这是预期的
没有真正选择行 - 表格不再集中，所以我得到灰色而不是蓝色行。但即使我table.requestFocus()随时打电话并使用PlatformUtil.runLater()它也不会改变任何东西。所以我认为这与表格焦点无关。

任何想法如何（来自代码）选择第一行并做出这样的情况，即在使用 SHIFT 在另一行上按下鼠标按钮后，我得到了多项选择？

示例应用程序。见createSelectionControl()->Button("|<")

import javafx.application.Application;
import javafx.beans.binding.StringBinding;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableColumn.CellEditEvent;
import javafx.scene.control.TablePosition;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;

/**
 * table with standard cell editor
 */
public class SelectionTableApp extends Application {
    private static String ID_DESC_LABEL = "descLabel";
    private TableView<Person> table;
    private static final Person PERSON_STASZEK = new Person("Stanislaw",
            "Czerkawski", "s.czerkawski@wp.pl");
    private final ObservableList<Person> data = FXCollections
            .observableArrayList(
                    new Person("Jacob", "Smith", "jacob.smith@example.com"),
                    new Person("Isabella", "Johnson",
                            "isabella.johnson@example.com"),
                    new Person("Ethan", "Williams",
                            "ethan.williams@example.com"),
                    new Person("Emma", "Jones", "emma.jones@example.com"),
                    new Person("Michael", "Brown", "michael.brown@example.com"),
                    PERSON_STASZEK);
    private TableColumn firstNameCol;
    private TableColumn lastNameCol;
    private TableColumn emailCol;

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

    @Override
    public void start(Stage stage) {
        addData();
        BorderPane root = new BorderPane();
        Scene scene = new Scene(root);
        scene.getStylesheets().add("ks/javafx/table/def/1.css");
        stage.setTitle("Table View Sample");
        stage.setWidth(450);
        stage.setHeight(550);

        final Label label = new Label("Address Book");
        label.setFont(new Font("Arial", 20));
        createTable();
        configureTable(table);

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

        root.setTop(label);
        root.setCenter(table);
        root.setBottom(vbox);

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

        scene.focusOwnerProperty().addListener((obs, o, n) -> {
            System.out.println("SelectionTableApp.start()=" + n);
        });
    }

    private void addData() {
        for (int i = 0; i < 100; i++) {
            data.add(new Person("first-" + i, "name-" + i, "mail-" + i));
        }
    }

    private void configureTable(TableView<Person> table) {
        table.setEditable(false);
        table.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
    }

    private void createTable() {
        table = new TableView<Person>();

        firstNameCol = new TableColumn("First Name");
        firstNameCol.setMinWidth(100);
        firstNameCol
                .setCellValueFactory(new PropertyValueFactory<Person, String>(
                        "firstName"));
        firstNameCol.setCellFactory(TextFieldTableCell.forTableColumn());
        firstNameCol
                .setOnEditCommit(new EventHandler<CellEditEvent<Person, String>>() {
                    @Override
                    public void handle(CellEditEvent<Person, String> t) {
                        System.out.println("onEditCommit");
                        t.getTableView().getItems()
                                .get(t.getTablePosition().getRow())
                                .setFirstName(t.getNewValue());
                    }
                });

        lastNameCol = new TableColumn("Last Name");
        lastNameCol.setMinWidth(100);
        lastNameCol
                .setCellValueFactory(new PropertyValueFactory<Person, String>(
                        "lastName"));
        lastNameCol.setCellFactory(TextFieldTableCell.forTableColumn());
        lastNameCol
                .setOnEditCommit(new EventHandler<CellEditEvent<Person, String>>() {
                    @Override
                    public void handle(CellEditEvent<Person, String> t) {
                        System.out.println("onEditCommit");
                        t.getTableView().getItems()
                                .get(t.getTablePosition().getRow())
                                .setLastName(t.getNewValue());
                    }
                });

        emailCol = new TableColumn("Email");
        emailCol.setMinWidth(200);
        emailCol.setCellValueFactory(new PropertyValueFactory<Person, String>(
                "email"));
        emailCol.setCellFactory(TextFieldTableCell.forTableColumn());
        emailCol.setOnEditCommit(new EventHandler<CellEditEvent<Person, String>>() {
            @Override
            public void handle(CellEditEvent<Person, String> t) {
                System.out.println("onEditCommit");
                t.getTableView().getItems().get(t.getTablePosition().getRow())
                        .setEmail(t.getNewValue());
            }
        });

        table.setItems(data);
        table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
    }

    private Node createAddPersonControl() {
        final TextField addFirstName = new TextField();
        addFirstName.setPromptText("First Name");
        addFirstName.setMaxWidth(firstNameCol.getPrefWidth());
        final TextField addLastName = new TextField();
        addLastName.setMaxWidth(lastNameCol.getPrefWidth());
        addLastName.setPromptText("Last Name");
        final TextField addEmail = new TextField();
        addEmail.setMaxWidth(emailCol.getPrefWidth());
        addEmail.setPromptText("Email");

        final Button addButton = new Button("Add");
        addButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent e) {
                data.add(new Person(addFirstName.getText(), addLastName
                        .getText(), addEmail.getText()));
                addFirstName.clear();
                addLastName.clear();
                addEmail.clear();
            }
        });
        final HBox hb = new HBox();
        hb.getChildren().addAll(addFirstName, addLastName, addEmail, addButton);
        hb.setSpacing(3);
        return hb;
    }

    private Node createSelectionControl() {
        Button goFist = new Button("|<");
        goFist.setOnAction(e -> {
            int ind = 0;
            table.scrollTo(ind);
            table.getSelectionModel().clearAndSelect(ind);

            // Bounds local = table.getBoundsInLocal();
            // Bounds sceneBounds = table.localToScene(local);
            // Bounds screenBounds = table.localToScreen(local);
            // System.out.println("SelectionTableApp.createSelectionControl()="
            // +
            // local);
            // System.out.println("SelectionTableApp.createSelectionControl()="
            // +
            // sceneBounds);
            // System.out.println("SelectionTableApp.createSelectionControl()="
            // +
            // screenBounds);
            //
            // double sceneX = sceneBounds.getMinX() + 10;
            // double sceneY = sceneBounds.getMinY() + 10;
            // double screenX = screenBounds.getMinX() + 10;
            // double screenY = screenBounds.getMinX() + 10;
            //
            // sceneX = 21;
            // sceneY = 59;
            // screenX = 760;
            // screenY = 287;
            //
            // MouseEvent me = new MouseEvent(MouseEvent.MOUSE_PRESSED, sceneX,
            // sceneY, screenX, screenY,
            // MouseButton.PRIMARY, 1, false, false, false, false, true, false,
            // false, true, false, false,
            // null);
            // MouseEvent.fireEvent(table, me);
            // me = new MouseEvent(MouseEvent.MOUSE_RELEASED, sceneX, sceneY,
            // screenX, screenY,
            // MouseButton.PRIMARY, 1, false, false, false, false, true, false,
            // false, true, false, false,
            // null);
            // MouseEvent.fireEvent(table, me);
            // me = new MouseEvent(MouseEvent.MOUSE_CLICKED, sceneX, sceneY,
            // screenX, screenY, MouseButton.PRIMARY,
            // 1, false, false, false, false, true, false, false, true, false,
            // false, null);
            // MouseEvent.fireEvent(table, me);
            // Event.fireEvent(YOUR NODE, new
            // MouseEvent(MouseEvent.MOUSE_CLICKED,
            // 0, 0, 0, 0, MouseButton.PRIMARY, 1, true, true, true, true, true,
            // true, true, true, true, true, null));
            // table.fireEvent(event);
        });
        Button goLast = new Button(">|");
        goLast.setOnAction(e -> {
            int ind = table.getItems().size() - 1;
            table.getSelectionModel().clearAndSelect(ind);
            table.scrollTo(ind);
        });
        HBox hbox = new HBox(goFist, goLast);
        return hbox;
    }

    private Node createInfoControl() {
        GridPane grid = new GridPane();
        grid.setHgap(10);
        grid.setVgap(5);

        StringBinding binding = new StringBinding() {
            {
                bind(table.editingCellProperty());
            }

            @Override
            protected String computeValue() {
                TablePosition<Person, ?> pos = table.getEditingCell();
                String ret = (pos != null) ? (pos.getRow() + "." + pos
                        .getColumn()) : "";
                return ret;
            }
        };
        addLabelAndVal("editingCell:", binding, grid, 0, 0);

        addLabelAndVal("table.focused:", table.focusedProperty().asString(),
                grid, 0, 2);
        addLabelAndVal("selM.selected:", table.getSelectionModel()
                .selectedIndexProperty().asString(), grid, 1, 0);
        addLabelAndVal("needsLayout:", table.needsLayoutProperty().asString(),
                grid, 1, 2);

        addLabelAndVal("selected", table.getSelectionModel()
                .getSelectedIndices(), grid, 2, 0);
        return grid;
    }

    private void addLabelAndVal(String labelTxt, ObservableValue<String> val,
            GridPane grid, int rowInd, int colInd) {
        Label lab = new Label(labelTxt);
        lab.setId(ID_DESC_LABEL);
        Label valLab = new Label();
        valLab.textProperty().bind(val);
        grid.add(lab, colInd, rowInd);
        grid.add(valLab, colInd + 1, rowInd);
    }

    private void addLabelAndVal(String labelTxt,
            final ObservableList<Integer> val, GridPane grid, int rowInd,
            int colInd) {
        Label lab = new Label(labelTxt);
        lab.setId(ID_DESC_LABEL);
        Label valLab = new Label();

        val.addListener(new ListChangeListener<Integer>() {
            @Override
            public void onChanged(
                    javafx.collections.ListChangeListener.Change<? extends Integer> c) {
                valLab.setText(val.toString());
            }
        });

        valLab.setText(val.toString());
        grid.add(lab, colInd, rowInd);
        grid.add(valLab, colInd + 1, rowInd);
    }

}

和我的模型：

import javafx.beans.property.SimpleStringProperty;

public class Person {

    private final SimpleStringProperty firstName;
    private final SimpleStringProperty lastName;
    private final SimpleStringProperty email;

    public 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);
    }
}

javafx - 选择第一个/最后一个清除锚信息 - MultipleSelectionModel

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