![enter image description here](https://istack.dev59.com/7fXS7.webp)
![enter image description here](https://istack.dev59.com/7Jb4r.webp)
谢谢任何有关此问题的提示!
我使用了一层简单的背景颜色来制造一个红色的突出显示(类似于 Stefan 建议的解决方案)。
/**
* file: table.css
* Place in same directory as TableViewPropertyEditorWithCSS.java.
* Have your build system copy this file to your build output directory.
**/
.highlighted-cell {
-fx-text-fill: -fx-text-inner-color;
-fx-background-color: firebrick, gainsboro;
-fx-background-insets: 0, 2 0 0 0;
}
对于像stackpane这样的标准区域,您只需要应用上述CSS(减去-fx-text-fill
)即可获得所需的结果。
-fx-background-color:
linear-gradient(
from 0px 0px to 0px 2px,
firebrick, firebrick 99%,
gainsboro
);
false
,则会突出显示该单元格(通过应用highlighted-cell
CSS类)。
突出显示单元格样式类切换逻辑:
public void updateItem(Object item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
....
getStyleClass().remove("highlighted-cell");
} else {
if (getItem() instanceof Boolean && (Boolean.FALSE.equals((Boolean) getItem()))) {
getStyleClass().add("highlighted-cell");
} else {
getStyleClass().remove("highlighted-cell");
}
...
}
}
highlighted-cell
样式类时,它看起来很好,但确实有一些缺点。表格着色方案非常微妙和复杂。它具有奇偶值的高亮显示,选定行的高亮显示,选定悬停行的高亮显示,聚焦行和单元格的高亮显示等等。此外,它还有各种组合。仅直接在highlight-cell类中设置background-color是一种粗暴的方法,因为它没有考虑所有这些其他微妙之处,而只是覆盖了它们,因此使用此样式突出显示的单元格始终看起来相同,无论应用了什么临时的css伪类状态。
这个方案很好,但更好的解决方案是根据伪类状态以不同颜色突出显示单元格。然而,实现这个功能相当棘手,您可能会花费很多时间尝试各种状态和CSS选择器组合以获得漂亮的变化高亮显示效果。总的来说,在这个例子中,对我来说不值得付出额外的努力,但对您可能有用。
测试程序(对于这个程序的长度和复杂性,我很抱歉,但是将样式高亮逻辑集成到现有程序中更容易):
import java.lang.reflect.*;
import java.util.logging.*;
import javafx.application.Application;
import javafx.beans.property.*;
import javafx.beans.value.*;
import javafx.collections.*;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.control.TableColumn.CellEditEvent;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.*;
import javafx.stage.Stage;
import javafx.util.Callback;
// click in the value column (a couple of times) to edit the value in the column.
// property editors are defined only for String and Boolean properties.
// change focus to something else to commit the edit.
public class TableViewPropertyEditorWithCSS extends Application {
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage stage) {
final Person aPerson = new Person("Fred", false, false, "Much Ado About Nothing");
final Label currentObjectValue = new Label(aPerson.toString());
TableView<NamedProperty> table = new TableView();
table.setEditable(true);
table.setItems(createNamedProperties(aPerson));
TableColumn<NamedProperty, String> nameCol = new TableColumn("Name");
nameCol.setCellValueFactory(new PropertyValueFactory<NamedProperty, String>("name"));
TableColumn<NamedProperty, Object> valueCol = new TableColumn("Value");
valueCol.setCellValueFactory(new PropertyValueFactory<NamedProperty, Object>("value"));
valueCol.setCellFactory(new Callback<TableColumn<NamedProperty, Object>, TableCell<NamedProperty, Object>>() {
@Override
public TableCell<NamedProperty, Object> call(TableColumn<NamedProperty, Object> param) {
return new EditingCell();
}
});
valueCol.setOnEditCommit(
new EventHandler<CellEditEvent<NamedProperty, Object>>() {
@Override
public void handle(CellEditEvent<NamedProperty, Object> t) {
int row = t.getTablePosition().getRow();
NamedProperty property = (NamedProperty) t.getTableView().getItems().get(row);
property.setValue(t.getNewValue());
currentObjectValue.setText(aPerson.toString());
}
});
table.getColumns().setAll(nameCol, valueCol);
table.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY);
VBox layout = new VBox(10);
layout.setStyle("-fx-background-color: cornsilk; -fx-padding: 10;");
layout.getChildren().setAll(
currentObjectValue,
table);
VBox.setVgrow(table, Priority.ALWAYS);
Scene scene = new Scene(layout, 650, 600);
scene.getStylesheets().add(getClass().getResource("table.css").toExternalForm());
stage.setScene(scene);
stage.show();
}
private ObservableList<NamedProperty> createNamedProperties(Object object) {
ObservableList<NamedProperty> properties = FXCollections.observableArrayList();
for (Method method : object.getClass().getMethods()) {
String name = method.getName();
Class type = method.getReturnType();
if (type.getName().endsWith("Property")) {
try {
properties.add(new NamedProperty(name, (Property) method.invoke(object)));
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
Logger.getLogger(TableViewPropertyEditorWithCSS.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
return properties;
}
public class NamedProperty {
public NamedProperty(String name, Property value) {
nameProperty.set(name);
valueProperty = value;
}
private StringProperty nameProperty = new SimpleStringProperty();
public StringProperty nameProperty() {
return nameProperty;
}
public StringProperty getName() {
return nameProperty;
}
public void setName(String name) {
nameProperty.set(name);
}
private Property valueProperty;
public Property valueProperty() {
return valueProperty;
}
public Object getValue() {
return valueProperty.getValue();
}
public void setValue(Object value) {
valueProperty.setValue(value);
}
}
public class Person {
private final SimpleStringProperty firstName;
private final SimpleBooleanProperty married;
private final SimpleBooleanProperty hasChildren;
private final SimpleStringProperty favoriteMovie;
private Person(String firstName, Boolean isMarried, Boolean hasChildren, String favoriteMovie) {
this.firstName = new SimpleStringProperty(firstName);
this.married = new SimpleBooleanProperty(isMarried);
this.hasChildren = new SimpleBooleanProperty(hasChildren);
this.favoriteMovie = new SimpleStringProperty(favoriteMovie);
}
public SimpleStringProperty firstNameProperty() {
return firstName;
}
public SimpleBooleanProperty marriedProperty() {
return married;
}
public SimpleBooleanProperty hasChildrenProperty() {
return hasChildren;
}
public SimpleStringProperty favoriteMovieProperty() {
return favoriteMovie;
}
public String getFirstName() {
return firstName.get();
}
public void setFirstName(String fName) {
firstName.set(fName);
}
public Boolean getMarried() {
return married.get();
}
public void setMarried(Boolean isMarried) {
married.set(isMarried);
}
public Boolean getHasChildren() {
return hasChildren.get();
}
public void setHasChildren(Boolean hasChildren) {
this.hasChildren.set(hasChildren);
}
public String getFavoriteMovie() {
return favoriteMovie.get();
}
public void setFavoriteMovie(String movie) {
favoriteMovie.set(movie);
}
@Override
public String toString() {
return firstName.getValue() + ", isMarried? " + married.getValue() + ", hasChildren? " + hasChildren.getValue() + ", favoriteMovie: " + favoriteMovie.get();
}
}
class EditingCell extends TableCell<NamedProperty, Object> {
private TextField textField;
private CheckBox checkBox;
public EditingCell() {
}
@Override
public void startEdit() {
if (!isEmpty()) {
super.startEdit();
if (getItem() instanceof Boolean) {
createCheckBox();
setText(null);
setGraphic(checkBox);
} else {
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
if (getItem() instanceof Boolean) {
setText(getItem().toString());
} else {
setText((String) getItem());
}
setGraphic(null);
}
@Override
public void updateItem(Object item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
getStyleClass().remove("highlighted-cell");
} else {
if (getItem() instanceof Boolean && (Boolean.FALSE.equals((Boolean) getItem()))) {
getStyleClass().add("highlighted-cell");
} else {
getStyleClass().remove("highlighted-cell");
}
if (isEditing()) {
if (getItem() instanceof Boolean) {
if (checkBox != null) {
checkBox.setSelected(getBoolean());
}
setText(null);
setGraphic(checkBox);
} else {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
}
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
textField.focusedProperty().addListener(new ChangeListener<Boolean>() {
@Override
public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
if (!newValue) {
commitEdit(textField.getText());
}
}
});
}
private void createCheckBox() {
checkBox = new CheckBox();
checkBox.setSelected(getBoolean());
checkBox.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
checkBox.focusedProperty().addListener(new ChangeListener<Boolean>() {
@Override
public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
if (!newValue) {
commitEdit(checkBox.isSelected());
}
}
});
}
private String getString() {
return getItem() == null ? "" : getItem().toString();
}
private Boolean getBoolean() {
return getItem() == null ? false : (Boolean) getItem();
}
}
}
看,如何理解CSSRef:
http://docs.oracle.com/javafx/2/api/javafx/scene/doc-files/cssref.html
看这里:
-fx-background-image:
uri [ , uri ]*
一系列由逗号隔开的图像URI。
看这里:
-fx-background-repeat
repeat-style [ , repeat-style ]*
其中repeat-style = repeat-x | repeat-y | [repeat | space | round | stretch | no-repeat]{1,2}
一系列由逗号隔开的值。系列中的每个repeat-style项应用于background-image系列中对应的图像。
看这里:
-fx-background-position
bg-position [ , bg-position ]* where = [ [ [ size | left | center | right ] [ size | top | center | bottom ]? ] | [ [ center | [ left | right ] size? ] || [ center | [ top | bottom ] size? ] ]
一系列由逗号隔开的值。系列中的每个bg-position项应用于background-image系列中对应的图像。
那么,您可以看到:您应该描述两个图像(每个图像为2x2像素 - 一个红色和一个灰色),每个图像都有两个对应的背景位置和重复样式。
如何做到?
例如:
{
-fx-backdround-image : "path_to_red", "path_to_grey";
-fx-background-repeat : repeat-x, stretch;
-fx-background-position : 0px 0px, 0px 2px;
}
我不能保证代码的可行性,但这个想法似乎是正确的。
当使用插图时,可能只需要颜色而不是图片。以下是来自原始JavaFX CSS的示例:
.table-row-cell:odd {
-fx-background-color: -fx-table-cell-border-color, derive(-fx-control-inner-background,-5%);
-fx-background-insets: 0, 0 0 1 0;
}
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