样品溶液
这里是一个TableView中溢出的细胞,你也许可以适应它的TreeTableView。
class OverflowCell extends TableCell<Person, String> {
private Label overflowLabel = new Label();
private Group overflowGroup = new Group(overflowLabel);
public OverflowCell() {
// destroy the clip.
clipProperty().addListener((observable, oldClip, newClip) -> {
if (newClip != null) {
setClip(null);
}
});
}
@Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty || item == null) {
setGraphic(null);
} else {
overflowLabel.setText(item);
setGraphic(
overflowGroup
);
}
}
}
通常在TableView中细胞被削波,所以收听者在OverflowCell的构造添加到除去任何剪辑加入到细胞。 updateItem调用使用一个Group,这样标签的大小不会调整为小于它的首选大小并被忽略。
有可能有其他方法来做到这一点。自定义的行工厂可能是替代解决方案。这个OverflowCell黑客只是一个简单的想法。
示例代码
这是它在行动,你可以看到在第一行的最后一个名字是如何溢出到下一列。
道歉的代码在这里的量。
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.*;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.stage.Stage;
public class TableCellOverflow extends Application {
private TableView<Person> table = new TableView<>();
private final ObservableList<Person> data =
FXCollections.observableArrayList(
new Person("Jacob", "Krzyzanowski", ""),
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) {
Scene scene = new Scene(new Group());
stage.setTitle("Table View Sample");
table.setPrefHeight(200);
final Label label = new Label("Address Book");
label.setFont(new Font("Arial", 20));
TableColumn<Person, String> firstNameCol = new TableColumn<>("First Name");
firstNameCol.setMaxWidth(80);
firstNameCol.setCellValueFactory(
new PropertyValueFactory<>("firstName"));
firstNameCol.getStyleClass().add("left-header");
TableColumn<Person, String> lastNameCol = new TableColumn<>();
lastNameCol.setMaxWidth(60);
lastNameCol.setCellValueFactory(
new PropertyValueFactory<>("lastName"));
lastNameCol.setCellFactory(param -> new OverflowCell());
TableColumn<Person, String> emailCol = new TableColumn<>("Email");
emailCol.setMaxWidth(100);
emailCol.setCellValueFactory(
new PropertyValueFactory<>("email"));
table.setItems(data);
table.getColumns().addAll(firstNameCol, lastNameCol, emailCol);
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10));
vbox.getChildren().addAll(label, table);
((Group) scene.getRoot()).getChildren().addAll(vbox);
stage.setScene(scene);
stage.show();
}
class OverflowCell extends TableCell<Person, String> {
private Label overflowLabel = new Label();
private Group overflowGroup = new Group(overflowLabel);
public OverflowCell() {
// destroy the clip.
clipProperty().addListener((observable, oldClip, newClip) -> {
if (newClip != null) {
setClip(null);
}
});
}
@Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty || item == null) {
setGraphic(null);
} else {
overflowLabel.setText(item);
setGraphic(
overflowGroup
);
}
}
}
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);
}
}
}
请参阅[RT-22593 Labeled popover overflow display](https://javafx-jira.kenai.com/browse/RT-22593)了解相关功能要求。 – jewelsea
看起来很相似但不同(看起来他们很快就没有看到)。你认为自定义treeTableRow会工作吗? (顺便说一句,你这个人在你以前的所有帮助中都很...帮助我快速学习javafx,感谢你的工作)。 – Dustin