這是一個基於定製單元工廠TreeView
創建類似行的單元的想法。創建一個自定義單元格,其中包含網格中的2個標籤和一些調整大小的行爲設置。
public class CustomTree extends Application {
@Override
public void start(Stage stage) throws Exception {
TreeView<String[]> tree = new TreeView<>();
tree.setCellFactory(cell -> new TreeCell<String[]>() {
private GridPane pane = new GridPane();
private Label keyLabel = new Label();
private Label valueLabel = new Label();
private Border keyBorder = new Border(
new BorderStroke(Color.BLACK, BorderStrokeStyle.SOLID, null, new BorderWidths(0.5, 0.5, 0.5, 1)));
private Border valueBorder = new Border(
new BorderStroke(Color.BLACK, BorderStrokeStyle.SOLID, null, new BorderWidths(0.5, 1, 0.5, 0.5)));
{
pane.getChildren().addAll(keyLabel, valueLabel);
GridPane.setConstraints(keyLabel, 0, 0);
GridPane.setConstraints(valueLabel, 1, 0);
ColumnConstraints column1 = new ColumnConstraints();
column1.setPercentWidth(50);
ColumnConstraints column2 = new ColumnConstraints();
column2.setPercentWidth(50);
pane.getColumnConstraints().addAll(column1, column2);
keyLabel.setBorder(keyBorder);
valueLabel.setBorder(valueBorder);
keyLabel.setMaxWidth(Double.MAX_VALUE);
valueLabel.setMaxWidth(Double.MAX_VALUE);
setPadding(Insets.EMPTY);
}
@Override
public void updateItem(String[] name, boolean empty) {
super.updateItem(name, empty);
if (empty || name == null) {
setText(null);
setGraphic(null);
} else {
keyLabel.setText(name[0]);
valueLabel.setText(name[1]);
setGraphic(pane);
}
}
});
TreeItem<String[]> root = new TreeItem<>(new String[] { "", "" });
TreeItem<String[]> sub1 = new TreeItem<>(new String[] { "Foo", "Bar" });
TreeItem<String[]> sub2 = new TreeItem<>(new String[] { "Foo", "Bar" });
TreeItem<String[]> sub3 = new TreeItem<>(new String[] { "Foo", "Bar" });
TreeItem<String[]> sub4 = new TreeItem<>(new String[] { "Foo", "" });
TreeItem<String[]> sub5 = new TreeItem<>(new String[] { "Foo", "Bar" });
TreeItem<String[]> sub41 = new TreeItem<>(new String[] { "Foo", "Bar" });
TreeItem<String[]> sub42 = new TreeItem<>(new String[] { "Foo", "Bar" });
root.getChildren().addAll(sub1, sub2, sub3, sub4, sub5);
sub4.getChildren().addAll(sub41, sub42);
tree.setRoot(root);
Scene scene = new Scene(tree);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
Application.launch(args);
}
}
注意,根也必須使用這種細胞類型,雖然它可能隱藏完全使用tree.setShowRoot(false);
根。這種方法的兩個缺點是每個單元的行爲都是一個單元 - 沒有列的概念,並且單元的值是以數組的形式給出的,因此失去了類型安全性。你可以自己擴展這個例子。
雖然使用(通用)TableView
或TreeTableView
方法可能有很多工作。
你的意思是'TreeTableView'?你可以添加一個你想要的樣子嗎? – user1803551
@ user1803551是的! – beepboop
@ user1803551添加圖片示例。 – beepboop