向TableView（JAVAFX）中的单元格添加按钮 [英] Add a button to a cells in a TableView (JAVAFX)
本文介绍了向TableView（JAVAFX）中的单元格添加按钮的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想在我的桌子上添加一个编辑按钮。
当我点击按钮它将打开一个窗口，选择项目，我尝试了几种方法来添加按钮，但没有人适合我。
谢谢
这里是我的控制器的代码：
i am trying to add an edit Button to my table. when i click the button it will open a window with the item selected,I tried several approaches to add the button but no one works for me. thank you here is the code of my controller:
public class AmdinConsolcontroler implements Initializable{
@FXML
// here we add the create new user window the the event butto
private void ActionCreateNewUser (ActionEvent evt)
{
try {
Parent root = FXMLLoader.load(SimpleFXapp.class.getResource("/Views/CreateUser.fxml"));
Stage primaryStage = new Stage();
Scene Scene = new Scene(root);
primaryStage.setScene(Scene);
primaryStage.setTitle("Create");
primaryStage.show();
}
catch(Exception Err)
{
System.out.println("exception from create user");
}
}
// Creating the Observable list to be data for the table
ObservableList<Users> data1 = FXCollections.observableList(Users.GetShortedUsrs());
// Declaring the Table
@FXML
TableView<Users> ShortedUserList;
//Declaring the Columns of the atble
@FXML
TableColumn<Users, String> ColFirstname ;
@FXML
TableColumn<Users, String>LastName;
@FXML
TableColumn<Users, String>UserName;
@FXML
TableColumn<Users, String>Role;
@FXML
TableColumn<Users, String>IsActive;
@FXML
TableColumn<Users, String>LastLogin;
@FXML
TableColumn Edit = new TableColumn<>("Edit");
// Addin the edit button
@Override
public void initialize(URL url, ResourceBundle rb)
{
try{
// initialzing the table column
ColFirstname.setCellValueFactory(new PropertyValueFactory("UserName"));
LastName.setCellValueFactory(new PropertyValueFactory("UserLastname"));
UserName.setCellValueFactory(new PropertyValueFactory("LoginId"));
Role.setCellValueFactory(new PropertyValueFactory("UserRole"));
IsActive.setCellValueFactory(new PropertyValueFactory("IsActive"));
LastLogin.setCellValueFactory(new PropertyValueFactory("LastLogin"));
// Adding the edit Button to the
// setng data the table
ShortedUserList.setItems(data1);
}
catch(Exception Err)
{
System.out.println(Err.getMessage());
}
}
}
推荐答案
这是一个替代解决方案，其中编辑列的单元格值属性是 ReadOnlyObjectWrapper ，它包装整个行对象。然后它在列上设置 cellFactory 以显示按钮。由于单元格的 item 属性表示整行，因此可以使用 cell.getItem（）。
Here is an alternative solution in which the cell value property for the edit column is a ReadOnlyObjectWrapper which wraps the entire "row object". Then it sets a cellFactory on the column to display the button. Since the item property of the cell represents the whole row, the value for the row can easily be accessed using cell.getItem().
import java.util.function.Function;
import javafx.application.Application;
import javafx.beans.property.ReadOnlyObjectWrapper;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.beans.value.ObservableValue;
import javafx.geometry.HPos;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.ColumnConstraints;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Priority;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class TableViewWithEditButton extends Application {
@Override
public void start(Stage primaryStage) {
TableView<Person> table = new TableView<>();
table.getColumns().add(column("First Name", Person::firstNameProperty, 150));
table.getColumns().add(column("Last Name", Person::lastNameProperty, 150));
table.getColumns().add(column("Email", Person::emailProperty, 200));
TableColumn<Person, Person> editColumn = column("Edit", ReadOnlyObjectWrapper<Person>::new, 60);
table.getColumns().add(editColumn);
editColumn.setCellFactory(col -> {
Button editButton = new Button("Edit");
TableCell<Person, Person> cell = new TableCell<Person, Person>() {
@Override
public void updateItem(Person person, boolean empty) {
super.updateItem(person, empty);
if (empty) {
setGraphic(null);
} else {
setGraphic(editButton);
}
}
};
editButton.setOnAction(e -> edit(cell.getItem(), primaryStage));
return cell ;
});
table.getItems().addAll(
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")
);
primaryStage.setScene(new Scene(new BorderPane(table)));
primaryStage.show();
}
private void edit(Person person, Stage primaryStage) {
TextField firstNameTextField = boundTF(person.firstNameProperty());
TextField lastNameTextField = boundTF(person.lastNameProperty());
TextField emailTextField = boundTF(person.emailProperty());
GridPane grid = new GridPane();
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(16));
grid.addRow(0, new Label("First name:"), firstNameTextField);
grid.addRow(1, new Label("Last name:"), lastNameTextField);
grid.addRow(2, new Label("Email:"), emailTextField);
Button okButton = new Button("OK");
grid.add(okButton, 0, 3, 2, 1);
ColumnConstraints leftCol = new ColumnConstraints();
leftCol.setHgrow(Priority.NEVER);
leftCol.setHalignment(HPos.RIGHT);
ColumnConstraints rightCol = new ColumnConstraints();
rightCol.setHgrow(Priority.SOMETIMES);
grid.getColumnConstraints().addAll(leftCol, rightCol);
GridPane.setHalignment(okButton, HPos.CENTER);
Scene scene = new Scene(grid);
Stage stage = new Stage();
okButton.setOnAction(e -> stage.hide());
firstNameTextField.setOnAction(e -> stage.hide());
lastNameTextField.setOnAction(e -> stage.hide());
emailTextField.setOnAction(e -> stage.hide());
stage.initModality(Modality.APPLICATION_MODAL);
stage.initOwner(primaryStage);
stage.initStyle(StageStyle.UNDECORATED);
stage.setScene(scene);
stage.show();
}
private TextField boundTF(StringProperty binding) {
TextField textField = new TextField();
textField.textProperty().bindBidirectional(binding);
textField.setMinWidth(80);
return textField ;
}
private <S,T> TableColumn<S,T> column(String title, Function<S, ObservableValue<T>> property, double width) {
TableColumn<S,T> col = new TableColumn<>(title);
col.setCellValueFactory(cellData -> property.apply(cellData.getValue()));
col.setPrefWidth(width);
return col ;
}
public static class Person {
private final StringProperty firstName = new SimpleStringProperty();
private final StringProperty lastName = new SimpleStringProperty();
private final StringProperty email = new SimpleStringProperty();
public Person(String firstName, String lastName, String email) {
setFirstName(firstName);
setLastName(lastName);
setEmail(email);
}
public final StringProperty firstNameProperty() {
return this.firstName;
}
public final java.lang.String getFirstName() {
return this.firstNameProperty().get();
}
public final void setFirstName(final java.lang.String firstName) {
this.firstNameProperty().set(firstName);
}
public final StringProperty lastNameProperty() {
return this.lastName;
}
public final java.lang.String getLastName() {
return this.lastNameProperty().get();
}
public final void setLastName(final java.lang.String lastName) {
this.lastNameProperty().set(lastName);
}
public final StringProperty emailProperty() {
return this.email;
}
public final java.lang.String getEmail() {
return this.emailProperty().get();
}
public final void setEmail(final java.lang.String email) {
this.emailProperty().set(email);
}
}
public static void main(String[] args) {
launch(args);
}
}
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