如何在JavaFX上设置tableView的行前景色?

Mat*_*ari 4 java javafx javafx-2 javafx-8

我有一个tableView,其中有很多项目,在某些项目中,我需要将前景色设置为红色。因此它是动态设置的。我成功完成的工作是向表中添加rowFactory并通过CSS更改了背景颜色,但是前景没有改变。总是黑色的:

tableViewAbastecidas.setRowFactory(param -> new TableRow<LeituraPista>() {
    @Override
    protected void updateItem(LeituraPista item, boolean empty) {
        if (item == null) {
            return;
        }
        String estilo;
        if (tableViewAbastecidas.getSelectionModel().getSelectedItems().contains(item)) {
            estilo = "-fx-background-color: linear-gradient(#95caff 0%, #77acff 90%, #e0e0e0 90%);";
        } else {
            estilo = "-fx-background-color: linear-gradient(white 0%, white 90%, #e0e0e0 90%);";
        }
        if (myConditionIsTrue) {
            estilo += "-fx-fill: #ff0000;-fx-text-fill: chartreuse;"; //Doesn't work, always black
        }
        setStyle(estilo);
    }
});
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Jam*_*s_D 6

以我的经验,将样式放在外部样式表中总是更好。

我认为您遇到的问题是TableRow不支持-fx-text-fill房地产;TableCell它包含的s 支持它。您可以在所有列上设置单元格工厂,但是如果使用外部样式表,则可以操作行的样式类,然后更改其及其后代的文本填充(因为css样式将由子节点继承) 。

由于您使用的是JavaFX 8,因此可以使用PseudoClasss,它具有比处理样式类列表更简洁的API。

所以(我还没有直接测试过)

// the string "my-condition" is the name of the pseudoclass and appears in the 
// external css file (see below):
PseudoClass myConditionPseudoClass = PseduoClass.getPseudoClass("my-condition");

tableViewAbastecidas.setRowFactory(param -> new TableRow<LeituraPista>() {
    @Override
    protected void updateItem(LeituraPista item, boolean empty) {
        super.updateItem();
        pseudoClassStateChanged(myConditionPseudoClass,  (! empty) && myCondition);
    }
});
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然后在外部CSS文件中完成所有样式:

.table-row-cell {
    -fx-background-color: linear-gradient(white 0%, white 90%, #e0e0e0 90%);
}
.table-row-cell:selected {
    -fx-background-color: linear-gradient(#95caff 0%, #77acff 90%, #e0e0e0 90%);
}
.table-row-cell:my-condition .table-cell {
    -fx-fill: #ff0000;
    -fx-text-fill: chartreuse;    
}
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这是一个完整的示例:

import java.util.Random;
import java.util.stream.IntStream;

import javafx.application.Application;
import javafx.beans.property.ReadOnlyIntegerWrapper;
import javafx.beans.property.ReadOnlyStringWrapper;
import javafx.css.PseudoClass;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableRow;
import javafx.scene.control.TableView;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class TableRowStyleExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        TableView<Item> table = new TableView<>();

        TableColumn<Item, String> nameCol = new TableColumn<>("Name");
        nameCol.setCellValueFactory(cellData -> new ReadOnlyStringWrapper(cellData.getValue().getName()));

        TableColumn<Item, Number> valueCol = new TableColumn<>("Value");
        valueCol.setCellValueFactory(cellData -> new ReadOnlyIntegerWrapper(cellData.getValue().getValue()));

        table.getColumns().add(nameCol);
        table.getColumns().add(valueCol);

        final Random rng = new Random();
        IntStream.rangeClosed(1, 20)
            .mapToObj( i -> new Item("Item "+i, rng.nextInt(10)+1))
            .forEach(table.getItems()::add);

        PseudoClass highValuePseudoClass = PseudoClass.getPseudoClass("high-value");
        table.setRowFactory(tv -> new TableRow<Item>() {
            @Override
            public void updateItem(Item item, boolean empty) {
                super.updateItem(item, empty);
                pseudoClassStateChanged(highValuePseudoClass, (! empty) && item.getValue() >= 9);
            }
        });

        Scene scene = new Scene(new BorderPane(table), 600, 400);
        scene.getStylesheets().add("table-row-style-example.css");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    public static class Item {
        private final String name ;
        private final int value ;

        public Item(String name, int value) {
            this.name = name ;
            this.value = value ;
        }

        public String getName() {
            return name ;
        }

        public int getValue() {
            return value ;
        }
    }

    public static void main(String[] args) {
        launch(args);
    }
}
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table-row-style-example.css

.table-row-cell {
    -fx-background-color: linear-gradient(white 0%, white 90%, #e0e0e0 90%);
}
.table-row-cell:selected {
    -fx-background-color: linear-gradient(#95caff 0%, #77acff 90%, #e0e0e0 90%);
}
.table-row-cell:high-value .table-cell {
    -fx-text-fill: chartreuse;    
} 
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