JavaFX中如何在表格中添加一列按钮

Question

使用JavaFX,想要使Tableview中的某一列 TableColumn 是按钮button ,该如何实现 ???

急求,谢谢!!!

Answer 1

    serverInfoButtonColumn.setCellFactory(tableColumn -> new AddServerInfoCell(serverInfoView));

package entity;

import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.scene.text.TextAlignment;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.StageStyle;

/**

• @title:
• @author: LiChao
• @dateTime: 2020/3/22 21:12

• @description:
  /
  public class AddServerInfoCell extends TableCell {
  /

  • a button for adding a new person. */ final Button startButton = new Button("启动"); final Button delButton = new Button("删除");

  /**

  • records the y pos of the last button press so that the add person dialog can be shown next to the cell. */ final DoubleProperty buttonY = new SimpleDoubleProperty();

  /**

  • AddPersonCell constructor
  • @param table the stage in which the table is placed.
  • @param table the table to which a new person can be added. */ public AddServerInfoCell(final TableView table) { startButton.setOnMousePressed(mouseEvent -> buttonY.set(mouseEvent.getScreenY())); startButton.setOnAction(actionEvent -> { showAddPersonDialog(table, buttonY.get()); table.getSelectionModel().select(getTableRow().getIndex()); }); }

  /** places an add button in the row only if the row is not empty. */
  @Override
  protected void updateItem(Boolean item, boolean empty) {
  super.updateItem(item, empty);
  if (!empty) {
  setContentDisplay(ContentDisplay.GRAPHIC_ONLY);
  HBox pane = new HBox(startButton,delButton);
  pane.setAlignment(Pos.CENTER);
  setGraphic(pane);
  } else {
  setGraphic(null);
  }
  }

  /**

  • shows a dialog which displays a UI for adding a person to a table.
  • @param table the table to which a person is to be added.

  • @param y the y position of the top left corner of the dialog.
    */
    private void showAddPersonDialog(final TableView table, double y) {
    // initialize the dialog.
    final Stage dialog = new Stage();
    dialog.setTitle("New Person");
    dialog.initModality(Modality.WINDOW_MODAL); //必须关闭对话框后才能操作其他的
    dialog.initStyle(StageStyle.UTILITY); //对话框-只保留关闭按钮
    dialog.setY(y);

    // create a grid for the data entry.
    GridPane grid = new GridPane();
    final TextField firstNameField = new TextField();
    final TextField lastNameField = new TextField();
    grid.addRow(0, new Label("First Name"), firstNameField);
    grid.addRow(1, new Label("Last Name"), lastNameField);
    grid.setHgap(10);
    grid.setVgap(10);
    GridPane.setHgrow(firstNameField, Priority.ALWAYS);
    GridPane.setHgrow(lastNameField, Priority.ALWAYS);

    // create action buttons for the dialog.
    Button ok = new Button("OK");
    ok.setDefaultButton(true);
    Button cancel = new Button("Cancel");
    cancel.setCancelButton(true);

    // only enable the ok button when there has been some text entered.
    ok.disableProperty().bind(firstNameField.textProperty().isEqualTo("").or(lastNameField.textProperty().isEqualTo("")));

    // add action handlers for the dialog buttons.
    ok.setOnAction(actionEvent -> {
    int nextIndex = table.getSelectionModel().getSelectedIndex() + 1;
    table.getSelectionModel().select(nextIndex);
    dialog.close();
    });
    cancel.setOnAction(actionEvent -> dialog.close());

    // layout the dialog.
    HBox buttons = HBoxBuilder.create().spacing(10).children(ok, cancel).alignment(Pos.CENTER_RIGHT).build();
    VBox layout = new VBox(10);
    layout.getChildren().addAll(grid, buttons);
    layout.setPadding(new Insets(5));
    dialog.setScene(new Scene(layout));
    dialog.show();
    }

}