tretonis's questions

当自定义 TreeTableView 内的单元格然后选择任意行时，条形图的颜色采用默认的 modena 样式，到目前为止它是正确的。

失去焦点后选择栏的文本不再是默认的黑色

如何在 JavaFX 中解决这个问题，有没有优雅的解决方案？

我试过

tableRowProperty().flatMap(TreeTableRow::focusedProperty).addListener((obs, wasSelected, isNowSelected) -> updateTextFill());

但失去焦点时它也无法正常工作

符合预期

import javafx.application.Application;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeTableCell;
import javafx.scene.control.TreeTableColumn;
import javafx.scene.control.TreeTableRow;
import javafx.scene.control.TreeTableView; 
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javafx.util.Callback;

public class SelectionBarColorFocus extends Application {

    BorderPane bp = new BorderPane();
    
    @Override
    public void start(Stage primaryStage) {
         TreeTableView<Person> treeTableView = new TreeTableView<>();

        // Criar colunas
        TreeTableColumn<Person, String> nameColumn = new TreeTableColumn<>("Name");
        nameColumn.setCellValueFactory(cellData -> cellData.getValue().getValue().nameProperty());
         
        
        nameColumn.setCellFactory((TreeTableColumn<Person, String> param) -> {

            TreeTableCell<Person, String> cell = new TreeTableCell<Person, String>() {
        
                   final ImageView imv = new ImageView();
                   final Text text = new Text("");
                   
                   HBox hbox = new HBox(imv, text);
                    
                   {
                      tableRowProperty().flatMap(TreeTableRow::selectedProperty).addListener((obs, wasSelected, isNowSelected) -> updateTextFill());                       
                      // tableRowProperty().flatMap(TreeTableRow::focusedProperty).addListener((obs, wasSelected, isNowSelected) -> updateTextFill());                       
                   }
                  
                    
                    @Override
                    public void updateItem(String item, boolean empty) {
                        
                        super.updateItem(item, empty);
                        if (item != null) {
                            text.setFill(Color.ORANGE);
                            text.setText(item);
                            setGraphic(hbox);
                            
                        }else {                            
                            text.setText("");
                            setGraphic(null);
                        }
                    }
                    
                    private void updateTextFill() {
                         text.setFill(getTableRow().isSelected() ? Color.WHITE: Color.ORANGE);
                    }   
                };

                return cell;
            }
        );

        
        
        TreeTableColumn<Person, String> addressColumn = new TreeTableColumn<>("Address");
        addressColumn.setCellValueFactory(cellData -> cellData.getValue().getValue().addressProperty());



        
        TreeTableColumn<Person, Number> ageColumn = new TreeTableColumn<>("Age");
        ageColumn.setCellValueFactory(cellData -> cellData.getValue().getValue().ageProperty());
        
        ageColumn.setCellFactory((TreeTableColumn<Person, Number> param) -> {
            TreeTableCell<Person, Number> cell = new TreeTableCell<Person, Number>() {
                
                boolean flat = false;
                final Text text = new Text("");
                
                {
                  focusedProperty().addListener((obs, wasFocused, isNowFocused) -> {
                          System.out.println("jorge focused="+isNowFocused);
                      }
                  );   
                }
                
                @Override
                public void updateItem(Number item, boolean empty) {
                    super.updateItem(item, empty);
                    
                    if(flat == false) {                         
                        tableRowProperty().flatMap(TreeTableRow::selectedProperty).addListener((obs, wasSelected, isNowSelected) -> updateTextFill(item, empty));                        
                        flat = true;
                    }                    
                    updateTextFill(item, empty);
                }
                
            
                private void updateTextFill(Number item, boolean empty) {                    
                    if(item != null && item.intValue() != -1) {
                            text.setFill(Color.BLUE);                          
                            text.setText(item.toString());
                            setGraphic(text);
                        
                    }else {
                        text.setText("");
                        setText("");
                        setGraphic(null);
                    }
                    text.setFill(getTableRow().isSelected() ? Color.WHITE: Color.BLUE);
                }    
                
            };
            
            return cell;
         });
        
        nameColumn.setPrefWidth(150);
        addressColumn.setPrefWidth(200);
        ageColumn.setPrefWidth(100);
    
        treeTableView.getColumns().addAll(nameColumn, addressColumn, ageColumn);

        TreeItem<Person> rootItem = new TreeItem<>(new Person("Persons", "", -1));
        rootItem.getChildren().addAll(
                new TreeItem<>(new Person("Alice", "456 Park Ave", 25)),
                new TreeItem<>(new Person("Bob", "789 Broadway", 35)),
                new TreeItem<>(new Person("Carol", "987 Elm St", 40)),
                new TreeItem<>(new Person("John", "123 Main St", 40))
        );

        rootItem.setExpanded(true);
        treeTableView.setRoot(rootItem);
        
        
        Button b = new Button("Row Lost Focus");
        
        StackPane st = new StackPane();
        st.getChildren().add(b);
        
        bp.setCenter(treeTableView);
        bp.setBottom(st);

        Scene scene = new Scene(bp, 500, 300);
        primaryStage.setScene(scene);
        primaryStage.setTitle("JavaFX TreeTableView SelectionBar Lost Focus");
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
    
    
    
    public static class Person {
        private StringProperty name;
        private StringProperty address;
        private IntegerProperty age;

        public Person(String name, String address, int age) {
            this.name = new SimpleStringProperty(name);
            this.address = new SimpleStringProperty(address);
            this.age = new SimpleIntegerProperty(age);
        }

        public StringProperty nameProperty() {
            return name;
        }

        public StringProperty addressProperty() {
            return address;
        }

        public IntegerProperty ageProperty() {
            return age;
        }
    }
}