JavaFx:禁用 first/last 列的重新排序
JavaFx: disable reordering for first/last column
我想禁用对 tableView 中第一列或最后一列的重新排序。
我可以通过两种方式禁用第一列或最后一列,因此我无法移动 first/last 列,但两种方式都可以让我将另一列拖到 first/last 位置。我该如何防止这种情况。我想以某种方式在其中放置一个 "barrier",以便始终有一个固定的列。
我如何禁用第一个列:
firstColumn.impl_setReorderable(false); // I know the method is @Deprecated but it works :)
另一种解决方案是通过反射获取 TableHeaderRow
的引用,然后禁用重新排序。但是这个解决方案的问题是,它禁用了所有列的重新排序,而我只想要第一个或最后一个列。
任何简单的想法我怎样才能做这样的事情?
您可以 'let' 进行重新排序,然后监听更改,在活动结束时您可以按照自己喜欢的方式重新排列列。 post 关于重新排序列的一个非常有用的方法是 this 一个(好吧,您应该考虑看看有很多好的答案)。因此,您可以向 table 的皮肤 属性 添加一个侦听器,并在内部执行以下操作:
table.skinProperty().addListener((obs, oldSkin, newSkin) -> {
final TableHeaderRow header = (TableHeaderRow) table.lookup("TableHeaderRow");
header.reorderingProperty().addListener((o, oldVal, newVal) -> {
ObservableList columns = table.getColumns();
// If the first columns is not in the first index change it
if (columns.indexOf(firstNameCol) != 0) {
columns.remove(firstNameCol);
columns.add(0, firstNameCol);
}
// Use the same logic for the last column
if (columns.indexOf(phoneCol) != columns.size() - 1) {
columns.remove(phoneCol);
columns.add(columns.size() , phoneCol);
}
});
});
这是一个完整的工作示例:
import com.sun.javafx.scene.control.skin.TableHeaderRow;
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
public class TestApp extends Application {
private TableView<Person> table = new TableView<Person>();
private final ObservableList<Person> data = FXCollections.observableArrayList(
new Person("Jacob", "Smith", "jacob.smith@example.com", "845-548-600"),
new Person("Isabella", "Johnson", "isabella.johnson@example.com", "455-777-645"),
new Person("Ethan", "Williams", "ethan.williams@example.com", "888-504-254"),
new Person("Emma", "Jones", "emma.jones@example.com", "123-548-350"),
new Person("Michael", "Brown", "michael.brown@example.com", "650-120-600"));
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(550);
stage.setHeight(500);
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
table.setEditable(true);
TableColumn firstNameCol = new TableColumn("First Name");
firstNameCol.setMinWidth(100);
firstNameCol.setCellValueFactory(new PropertyValueFactory<Person, String>("firstName"));
TableColumn lastNameCol = new TableColumn("Last Name");
lastNameCol.setMinWidth(100);
lastNameCol.setCellValueFactory(new PropertyValueFactory<Person, String>("lastName"));
TableColumn emailCol = new TableColumn("Email");
emailCol.setMinWidth(200);
emailCol.setCellValueFactory(new PropertyValueFactory<Person, String>("email"));
TableColumn phoneCol = new TableColumn("Phone");
phoneCol.setMinWidth(100);
phoneCol.setCellValueFactory(new PropertyValueFactory<Person, String>("phone"));
table.setItems(data);
table.getColumns().addAll(firstNameCol, lastNameCol, emailCol, phoneCol);
table.skinProperty().addListener((obs, oldSkin, newSkin) -> {
final TableHeaderRow header = (TableHeaderRow) table.lookup("TableHeaderRow");
header.reorderingProperty().addListener((o, oldVal, newVal) -> {
ObservableList columns = table.getColumns();
// If the first columns is not in the first index change it
if (columns.indexOf(firstNameCol) != 0) {
columns.remove(firstNameCol);
columns.add(0, firstNameCol);
}
// Use the same logic for the last column
if (columns.indexOf(phoneCol) != columns.size() - 1) {
columns.remove(phoneCol);
columns.add(columns.size(), phoneCol);
}
});
});
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 0, 0, 10));
vbox.getChildren().addAll(label, table);
((Group) scene.getRoot()).getChildren().addAll(vbox);
stage.setScene(scene);
stage.show();
}
public static class Person {
private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty email;
private final SimpleStringProperty phone;
private Person(String fName, String lName, String email, String phone) {
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.email = new SimpleStringProperty(email);
this.phone = new SimpleStringProperty(phone);
}
public String getPhone() {
return phone.get();
}
public String getFirstName() {
return firstName.get();
}
public String getLastName() {
return lastName.get();
}
public String getEmail() {
return email.get();
}
}
}
您还可以添加 firstNameCol.impl_setReorderable(false);
和 phoneCol.impl_setReorderable(false);
以防止拖动第一列和最后一列。
我想禁用对 tableView 中第一列或最后一列的重新排序。 我可以通过两种方式禁用第一列或最后一列,因此我无法移动 first/last 列,但两种方式都可以让我将另一列拖到 first/last 位置。我该如何防止这种情况。我想以某种方式在其中放置一个 "barrier",以便始终有一个固定的列。
我如何禁用第一个列:
firstColumn.impl_setReorderable(false); // I know the method is @Deprecated but it works :)
另一种解决方案是通过反射获取 TableHeaderRow
的引用,然后禁用重新排序。但是这个解决方案的问题是,它禁用了所有列的重新排序,而我只想要第一个或最后一个列。
任何简单的想法我怎样才能做这样的事情?
您可以 'let' 进行重新排序,然后监听更改,在活动结束时您可以按照自己喜欢的方式重新排列列。 post 关于重新排序列的一个非常有用的方法是 this 一个(好吧,您应该考虑看看有很多好的答案)。因此,您可以向 table 的皮肤 属性 添加一个侦听器,并在内部执行以下操作:
table.skinProperty().addListener((obs, oldSkin, newSkin) -> {
final TableHeaderRow header = (TableHeaderRow) table.lookup("TableHeaderRow");
header.reorderingProperty().addListener((o, oldVal, newVal) -> {
ObservableList columns = table.getColumns();
// If the first columns is not in the first index change it
if (columns.indexOf(firstNameCol) != 0) {
columns.remove(firstNameCol);
columns.add(0, firstNameCol);
}
// Use the same logic for the last column
if (columns.indexOf(phoneCol) != columns.size() - 1) {
columns.remove(phoneCol);
columns.add(columns.size() , phoneCol);
}
});
});
这是一个完整的工作示例:
import com.sun.javafx.scene.control.skin.TableHeaderRow;
import javafx.application.Application;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
public class TestApp extends Application {
private TableView<Person> table = new TableView<Person>();
private final ObservableList<Person> data = FXCollections.observableArrayList(
new Person("Jacob", "Smith", "jacob.smith@example.com", "845-548-600"),
new Person("Isabella", "Johnson", "isabella.johnson@example.com", "455-777-645"),
new Person("Ethan", "Williams", "ethan.williams@example.com", "888-504-254"),
new Person("Emma", "Jones", "emma.jones@example.com", "123-548-350"),
new Person("Michael", "Brown", "michael.brown@example.com", "650-120-600"));
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(550);
stage.setHeight(500);
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
table.setEditable(true);
TableColumn firstNameCol = new TableColumn("First Name");
firstNameCol.setMinWidth(100);
firstNameCol.setCellValueFactory(new PropertyValueFactory<Person, String>("firstName"));
TableColumn lastNameCol = new TableColumn("Last Name");
lastNameCol.setMinWidth(100);
lastNameCol.setCellValueFactory(new PropertyValueFactory<Person, String>("lastName"));
TableColumn emailCol = new TableColumn("Email");
emailCol.setMinWidth(200);
emailCol.setCellValueFactory(new PropertyValueFactory<Person, String>("email"));
TableColumn phoneCol = new TableColumn("Phone");
phoneCol.setMinWidth(100);
phoneCol.setCellValueFactory(new PropertyValueFactory<Person, String>("phone"));
table.setItems(data);
table.getColumns().addAll(firstNameCol, lastNameCol, emailCol, phoneCol);
table.skinProperty().addListener((obs, oldSkin, newSkin) -> {
final TableHeaderRow header = (TableHeaderRow) table.lookup("TableHeaderRow");
header.reorderingProperty().addListener((o, oldVal, newVal) -> {
ObservableList columns = table.getColumns();
// If the first columns is not in the first index change it
if (columns.indexOf(firstNameCol) != 0) {
columns.remove(firstNameCol);
columns.add(0, firstNameCol);
}
// Use the same logic for the last column
if (columns.indexOf(phoneCol) != columns.size() - 1) {
columns.remove(phoneCol);
columns.add(columns.size(), phoneCol);
}
});
});
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 0, 0, 10));
vbox.getChildren().addAll(label, table);
((Group) scene.getRoot()).getChildren().addAll(vbox);
stage.setScene(scene);
stage.show();
}
public static class Person {
private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty email;
private final SimpleStringProperty phone;
private Person(String fName, String lName, String email, String phone) {
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.email = new SimpleStringProperty(email);
this.phone = new SimpleStringProperty(phone);
}
public String getPhone() {
return phone.get();
}
public String getFirstName() {
return firstName.get();
}
public String getLastName() {
return lastName.get();
}
public String getEmail() {
return email.get();
}
}
}
您还可以添加 firstNameCol.impl_setReorderable(false);
和 phoneCol.impl_setReorderable(false);
以防止拖动第一列和最后一列。