我尝试将一个MouseClicked事件监听器添加到Tree Cell,以便在用户单击该单元格的Graphic或String值时触发它。
TestApp.java
public class TestApp extends Application {
@Override
public void start(Stage stage) throws Exception {
Image image = new Image(getClass().getResourceAsStream("icon.png"));
TreeItem<String> root = new TreeItem<String>("Root");
root.setGraphic(new ImageView(image));
TreeItem<String> child = new TreeItem<String>("Child");
root.getChildren().add(child);
TreeView<String> tree = new TreeView<String>(root);
tree.setCellFactory(new TestTreeCellFactory());
StackPane pane = new StackPane();
pane.getChildren().add(tree);
stage.setScene(new Scene(pane, 300, 250));
stage.show();
}
public static void main(String[] args) {
launch(args);
}
private class TestTreeCellFactory implements Callback<TreeView<String>, TreeCell<String>> {
@Override
public TreeCell<String> call(TreeView<String> treeView) {
CheckBoxTreeCell<String> tc = new CheckBoxTreeCell<String>();
tc.setOnMouseClicked((event) -> mousePressed(event, treeView));
return tc;
}
public void mousePressed(MouseEvent event, TreeView<String> treeView) {
if(event.getButton().equals(MouseButton.SECONDARY)) {
System.out.println("Right Mouse Button Clicked!");
}
}
}
}
单击“字符串值”时,鼠标事件当前正在触发,但单击“图形”图标时未触发。在尝试调试问题时,我的一些观察结果如下:
有没有办法在侦听器填充后将其附加到Tree Cell的图形中,或者我是否以错误的方式思考这个问题?