java - 如何基于表格 View 中一行的两个属性将条件格式应用于表格单元格文本字段

我有一个TableView，其中包含始终显示可写文本字段的列。如果column1的“BigDecimal”值大于column2的值，我想让文本字段更改颜色。我可以在EditableTextCell类中设置文本字段的样式(例如，如果文本不是有效数字)，但是似乎无法访问该模型进行其他比较。这是我的代码:

EditableTextCell.java

package tester;

import java.util.Objects;
import javafx.beans.value.ObservableValue;
import javafx.beans.value.WritableValue;
import javafx.geometry.Pos;
import javafx.scene.control.TableCell;
import javafx.scene.control.TextField;

public class EditableTextCell<E> extends TableCell<E, String>
{

private final TextField textField;
private boolean updating = false;

public EditableTextCell(boolean editable)
{
    textField = new TextField();
    textField.setAlignment(Pos.CENTER_RIGHT);

    textField.setEditable(editable);

    textField.textProperty().addListener((ObservableValue<? extends String> o, String oldValue, String newValue) ->
    {

        if (!updating)
        {
            ((WritableValue<String>) getTableColumn().getCellObservableValue((E) getTableRow().getItem())).setValue(newValue);
            getTableView().scrollTo(getTableRow().getIndex());
            getTableView().scrollToColumn(getTableColumn());
        }
        // this is where I would like stylize the textfield based on the input

    });
}

@Override
protected void updateItem(String item, boolean empty)
{
    super.updateItem(item, empty);
    if (empty)
    {
        setGraphic(null);
    } else
    {
        setGraphic(textField);
        if (!Objects.equals(textField.getText(), item))
        {
            // prevent own updates from moving the cursor
            updating = true;
            textField.setText(item);
            updating = false;

        }
    }
}
}

LineItem.java

package tester;

import javafx.beans.property.SimpleStringProperty;
import javafx.beans.property.StringProperty;

public class LineItem
{

private final StringProperty string1;
private final StringProperty string2;

public LineItem()
{
    this.string1 = new SimpleStringProperty();
    this.string2 = new SimpleStringProperty();
}

public final StringProperty getString1Property()
{
    return this.string1;
}

public final StringProperty getString2Property()
{
    return this.string2;
}
}

测试器

package tester;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableRow;
import javafx.scene.control.TableView;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;
import javafx.util.Callback;

public class Tester extends Application
{

@Override
public void start(Stage primaryStage)
{

    TableView<LineItem> table = new TableView<>();
    table.setRowFactory(p ->
    {
        final TableRow<LineItem> row = new TableRow<>();
        row.setOnMouseClicked(event ->
        {
            if (event.getClickCount() == 2 && (!row.isEmpty()))
            {
                LineItem rowData = row.getItem();
                System.out.println(rowData.getString1Property().get() + " "+rowData.getString2Property().get());
            }

        });
        return row;
    });
    Callback<TableColumn<LineItem, String>, TableCell<LineItem, String>> textFactoryEditable = (TableColumn<LineItem, String> p) -> new EditableTextCell(true);

    TableColumn<LineItem, String> column1 = new TableColumn<>("Test1");
    column1.setCellValueFactory(cellData -> cellData.getValue().getString1Property());
    column1.setEditable(true);
    column1.setCellFactory(textFactoryEditable);

    table.getColumns().add(column1);

    TableColumn<LineItem, String> column2 = new TableColumn<>("Test2");
    column2.setCellValueFactory(cellData -> cellData.getValue().getString2Property());
    column2.setEditable(true);
    column2.setCellFactory(textFactoryEditable);

    table.getColumns().add(column2);

    table.getItems().add(new LineItem());
    HBox root = new HBox();
    root.getChildren().addAll(table);

    Scene scene = new Scene(root, 500, 500);

    primaryStage.setTitle("Hello World!");
    primaryStage.setScene(scene);
    primaryStage.show();
}

/**
 * @param args the command line arguments
 */
public static void main(String[] args)
{
    launch(args);
}

}

最佳答案

我想到了。这是可以访问模型类的行。
LineItem lineItem = (LineItem) getTableRow().getItem();
但是，我的问题是我也在更改EditableTextCell上的类声明以匹配类型:
public class EditableTextCell<E> extends TableCell<E, String>
至:
public class EditableTextCell<LineItem> extends TableCell<LineItem, String>
这使我无法使用getTableRow().getItem()下的属性

出现此错误:

cannot find symbol
symbol:   method getString1Property()
location: variable lineItem of type LineItem
where LineItem is a type-variable:
LineItem extends Object declared in class EditableTextCell`