這是我實現：
import javafx.fxml.FXMLLoader;
import javafx.geometry.NodeOrientation;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import java.io.IOException;
import java.net.URL;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.ResourceBundle;
/**
* Created by Fouad on 3/20/2015.
*/
public abstract class I18NController
{
private Stage primaryStage;
public void setPrimaryStage(Stage primaryStage){this.primaryStage = primaryStage;}
public Stage getPrimaryStage(){return primaryStage;}
public final void changeLanguage(I18NLanguage language) throws IOException
{
StateBundle stateBundle = new StateBundle();
onSaveState(stateBundle);
Locale locale = language.getLocale();
Locale.setDefault(locale);
ResourceBundle resourceBundle = getResourceBundle(locale);
URL fxml = getFXMLResource();
FXMLLoader loader = new FXMLLoader(fxml, resourceBundle);
Parent root = loader.load();
NodeOrientation nodeOrientation = language.getNodeOrientation();
root.setNodeOrientation(nodeOrientation);
primaryStage.setScene(new Scene(root));
primaryStage.sizeToScene();
I18NController newController = loader.getController();
newController.setPrimaryStage(primaryStage);
onLoadState(newController, language, resourceBundle, stateBundle);
}
protected abstract ResourceBundle getResourceBundle(Locale locale);
protected abstract URL getFXMLResource();
protected abstract void onSaveState(StateBundle stateBundle);
protected abstract void onLoadState(I18NController newController, I18NLanguage newLanguage, ResourceBundle resourceBundle, StateBundle stateBundle);
public static interface I18NLanguage
{
Locale getLocale();
NodeOrientation getNodeOrientation();
}
public static class StateBundle
{
private Map<String, Object> sMap = new HashMap<>();
StateBundle(){}
public void putData(String key, Object value)
{
sMap.put(key, value);
}
public <T> T getDate(String key, Class<T> type)
{
return type.cast(sMap.get(key));
}
}
}
你可以使用這個類作爲基類控制器，這樣的事情：
JavaFXController.java：
public class JavaFXController extends I18NController implements Initializable
{
@FXML private DatePicker dpDate;
@FXML private RadioButton rdoArabic;
@FXML private RadioButton rdoEnglish;
// ...
@Override
public void initialize(URL location, ResourceBundle resources)
{
// ...
rdoEnglish.setOnAction(e ->
{
try
{
changeLanguage(AppSettings.Language.ENGLISH);
}
catch(IOException e1)
{
e1.printStackTrace();
}
});
rdoArabic.setOnAction(e ->
{
try
{
changeLanguage(AppSettings.Language.ARABIC);
}
catch(IOException e1)
{
e1.printStackTrace();
}
});
}
// ...
@Override
protected ResourceBundle getResourceBundle(Locale locale)
{
return ResourceBundle.getBundle("com/stackoverflow/gui/resources/JavaFXResourceBundle", locale, new UTF8Control());
}
@Override
protected URL getFXMLResource()
{
return getClass().getResource("resources/JavaFXDocument.fxml");
}
@Override
protected void onSaveState(StateBundle stateBundle)
{
LocalDate localDate = dpDate.getValue();
boolean isRdoArabicSelected = rdoArabic.isSelected();
boolean isRdoEnglishSelected = rdoEnglish.isSelected();
stateBundle.putData("localDate", localDate);
stateBundle.putData("isRdoArabicSelected", isRdoArabicSelected);
stateBundle.putData("isRdoEnglishSelected", isRdoEnglishSelected);
}
@Override
protected void onLoadState(I18NController newController, I18NLanguage newLanguage, ResourceBundle resourceBundle, StateBundle stateBundle)
{
JavaFXController controller = (JavaFXController) newController;
controller.getPrimaryStage().setTitle(resourceBundle.getString("window.title"));
NodeOrientation nodeOrientation = newLanguage.getNodeOrientation();
LocalDate localDate = stateBundle.getDate("localDate", LocalDate.class);
boolean isRdoArabicSelected = stateBundle.getDate("isRdoArabicSelected", Boolean.class);
boolean isRdoEnglishSelected = stateBundle.getDate("isRdoEnglishSelected", Boolean.class);
controller.dpDate.setValue(localDate);
controller.rdoArabic.setSelected(isRdoArabicSelected);
controller.rdoEnglish.setSelected(isRdoEnglishSelected);
}
}
AppSettings.java：
import com.parmajeyat.autobooking.gui.I18NController;
import javafx.geometry.NodeOrientation;
import java.util.Locale;
/**
* Created by Fouad on 2/7/2015.
*/
public final class AppSettings
{
private static final class Locales
{
public static final Locale SAUDI_AR_LOCALE = new Locale.Builder().setLanguageTag("ar-SA-u-nu-arab").build(); // nu is for numbers
public static final Locale SAUDI_EN_LOCALE = new Locale("en", "SA");
}
public static enum Language implements I18NController.I18NLanguage
{
ARABIC(Locales.SAUDI_AR_LOCALE, NodeOrientation.RIGHT_TO_LEFT),
ENGLISH(Locales.SAUDI_EN_LOCALE, NodeOrientation.LEFT_TO_RIGHT);
private Locale locale;
private NodeOrientation nodeOrientation;
Language(Locale locale, NodeOrientation nodeOrientation)
{
this.locale = locale;
this.nodeOrientation = nodeOrientation;
}
public Locale getLocale(){return locale;}
public NodeOrientation getNodeOrientation(){return nodeOrientation;}
}
}
UTF8Control。java：
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Locale;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
/**
* Created by Fouad on 2/1/2015.
*/
public class UTF8Control extends ResourceBundle.Control
{
public ResourceBundle newBundle(String baseName, Locale locale, String format, ClassLoader loader, boolean reload) throws IllegalAccessException, InstantiationException, IOException
{
// The below is a copy of the default implementation.
String bundleName = toBundleName(baseName, locale);
String resourceName = toResourceName(bundleName, "properties");
ResourceBundle bundle = null;
InputStream stream = null;
if(reload)
{
URL url = loader.getResource(resourceName);
if(url != null)
{
URLConnection connection = url.openConnection();
if(connection != null)
{
connection.setUseCaches(false);
stream = connection.getInputStream();
}
}
}
else
{
stream = loader.getResourceAsStream(resourceName);
}
if(stream != null)
{
try
{
// Only this line is changed to make it to read properties files as UTF-8.
bundle = new PropertyResourceBundle(new InputStreamReader(stream, "UTF-8"));
}
finally
{
stream.close();
}
}
return bundle;
}
}