更新TableView行外观

Question

我有一些困难要改变一些TableView行的外观.该行应显示带有笔划和红色的文本.实际上,我可以用红色显示它,但仍然不能做中风.这是我用来改变行外观的css类:

.itemCancelado {
    -fx-strikethrough: true;
    -fx-text-fill: red;
}

当用户将项目标记为已取消时,将添加此样式类:

public class ItemCanceladoCellFactory implements Callback<TableColumn, TableCell> {
    @Override
    public TableCell call(TableColumn tableColumn) {
        return new TableCell<ItemBean, Object>() {
            @Override
            public void updateItem(Object item, boolean empty) {
                super.updateItem(item, empty);
                setText(empty ? "" : getItem().toString());
                setGraphic(null);
                int indice=getIndex();
                ItemBean bean=null;
                if(indice<getTableView().getItems().size())
                    bean = getTableView().getItems().get(indice);
                if (bean != null && bean.isCancelado())
                    getStyleClass().add("itemCancelado");
            }
        };
    }
}

此处还有另一个问题,标记为已取消的行仅在用户从可观察列表中添加或删除元素时更改颜色.有没有办法可以强制更新TableView？

编辑信息

我将ItemBean类更改为使用BooleanProperty并且它部分解决了:

public class ItemBean {
    ...
    private BooleanProperty cancelado = new SimpleBooleanProperty(false);
    ...
    public Boolean getCancelado() {
        return cancelado.get();
    }

    public void setCancelado(Boolean cancelado){
        this.cancelado.set(cancelado);
    }

    public BooleanProperty canceladoProperty(){
        return cancelado;
    }
}

不幸的是,只有列"cancelado"(当最终工作时将被隐藏或删除)会改变外观:

在这里我配置列和表:

public class ControladorPainelPreVenda extends ControladorPainel {

    @FXML
    private TableView<ItemBean> tabelaItens;
    private ObservableList<ItemBean> itens = FXCollections.observableArrayList();
    ...

    private void configurarTabela() {
        colunaCodigo.setCellValueFactory(new MultiPropertyValueFactory<ItemBean, String>("produto.id"));
        colunaCodigo.setCellFactory(new ItemCanceladoCellFactory());
        colunaDescricao.setCellValueFactory(new MultiPropertyValueFactory<ItemBean, String>("produto.descricao"));
        colunaDescricao.setCellFactory(new ItemCanceladoCellFactory());
        colunaLinha.setCellValueFactory(new MultiPropertyValueFactory<ItemBean, String>("produto.nomeLinha"));
        colunaLinha.setCellFactory(new ItemCanceladoCellFactory());
        colunaQuantidade.setCellValueFactory(new PropertyValueFactory<ItemBean, BigDecimal>("quantidade"));
        colunaQuantidade.setCellFactory(new ItemCanceladoCellFactory());
        colunaValorLiquido.setCellValueFactory(new PropertyValueFactory<ItemBean, BigDecimal>("valorLiquido"));
        colunaValorLiquido.setCellFactory(new ItemCanceladoCellFactory());
        colunaValorTotal.setCellValueFactory(new PropertyValueFactory<ItemBean, BigDecimal>("valorTotal"));
        colunaValorTotal.setCellFactory(new ItemCanceladoCellFactory());
        colunaCancelado.setCellValueFactory(new PropertyValueFactory<ItemBean, Boolean>("cancelado"));
        colunaCancelado.setCellFactory(new ItemCanceladoCellFactory());
        tabelaItens.setItems(itens);
    }
    ...
}

如何更新所有列？

Answer 1

有没有办法可以强制更新TableView？

创建类Cancelado的属性ItemBean:

private BooleanProperty cancelado = new SimpleBooleanProperty(false);
public BooleanProperty canceladoProperty() { 
  return cancelado;
}

现在,列表视图的默认单元格实现将侦听cancelado属性的更改,并根据需要触发updateItem相关列表视图单元格的调用.

请注意,返回属性的函数的名称很重要,它必须是canceladoProperty()JavaFX扩展标准Java Bean成员getter和属性的setter模式.

财产命名公约背景

Oracle 使用JavaFX属性和绑定教程的代码片段演示了JavaFX属性访问的命名约定.

package propertydemo;

import javafx.beans.property.DoubleProperty;
import javafx.beans.property.SimpleDoubleProperty;

class Bill {

    // Define a variable to store the property
    private DoubleProperty amountDue = new SimpleDoubleProperty();

    // Define a getter for the property's value
    public final double getAmountDue(){return amountDue.get();}

    // Define a setter for the property's value
    public final void setAmountDue(double value){amountDue.set(value);}

     // Define a getter for the property itself
    public DoubleProperty amountDueProperty() {return amountDue;}

}

在openfx wiki上有一个关于JavaFX Property Architecture的概述,它详细介绍了属性的命名约定以及各种更高级的使用场景,如只读属性和惰性属性.

在TableView中自定义行的外观

此gist示例代码中提供了更多信息以及基于布尔行值自定义表行外观的示例.

private TableColumn<Friend, Boolean> makeBooleanColumn(String columnName, String propertyName, int prefWidth) {
  TableColumn<Friend, Boolean> column = new TableColumn<>(columnName);
  column.setCellValueFactory(new PropertyValueFactory<Friend, Boolean>(propertyName));
  column.setCellFactory(new Callback<TableColumn<Friend, Boolean>, TableCell<Friend, Boolean>>() {
    @Override public TableCell<Friend, Boolean> call(TableColumn<Friend, Boolean> soCalledFriendBooleanTableColumn) {
      return new TableCell<Friend, Boolean>() {
        @Override public void updateItem(final Boolean item, final boolean empty) {
          super.updateItem(item, empty);

          // clear any custom styles
          this.getStyleClass().remove("willPayCell");
          this.getStyleClass().remove("wontPayCell");
          this.getTableRow().getStyleClass().remove("willPayRow");
          this.getTableRow().getStyleClass().remove("wontPayRow");

          // update the item and set a custom style if necessary
          if (item != null) {
            setText(item.toString());
            this.getStyleClass().add(item ? "willPayCell" : "wontPayCell");
            this.getTableRow().getStyleClass().add(item ? "willPayRow" : "wontPayRow");
          }
        }
      };
    }
  });
  column.setPrefWidth(prefWidth);
}

有关

StackOverflow问题JavaFX中有两种颜色的背景？,提供了类似的解决方案.回答这个问题的讨论提供了有关JavaFX中表格突出显示的警告和细微之处的更多信息(基本上,很难获得伪造的样式 - 聚焦环,选定的条形图,悬停反馈等 - 正确的自定义行样式).

Answer 2

您必须将删除线设置为.text类:;-)

.itemCancelado {
    -fx-text-fill: red;
}
.itemCancelado .text {
    -fx-strikethrough: true;
}