feat: allow runtime language switching

src/main/java/com/codedead/opal/controller/SettingsWindowController.java

@@ -184,19 +184,23 @@ private void loadSettings() {
     private void resetSettingsAction() {
         logger.info("Attempting to reset all settings");
         if (FxUtils.showConfirmationAlert(translationBundle.getString("ConfirmReset"), getClass().getResourceAsStream(SharedVariables.ICON_URL))) {
-            showAlertIfLanguageMismatch(DEFAULT_LOCALE);
-
             Application.setUserAgentStylesheet(new PrimerLight().getUserAgentStylesheet());
             try {
                 settingsController.createDefaultProperties();
                 settingsController.setProperties(settingsController.readPropertiesFile());
 
+                final Locale locale = Locale.forLanguageTag(DEFAULT_LOCALE);
+                final ResourceBundle translationBundle = ResourceBundle.getBundle("translations.OpalApplication", locale);
+
+                mainWindowController.updateResourceBundle(translationBundle);
+
                 mainWindowController.loadMediaButtonVisibility(Boolean.parseBoolean(settingsController.getProperties().getProperty("mediaButtons", "true")));
                 mainWindowController.setAudioBalance(Double.parseDouble(settingsController.getProperties().getProperty("audioBalance", "0.0")));
 
                 trayIconController.hideTrayIcon();
 
-                loadSettings();
+                Stage stage = (Stage) sldAudioBalance.getScene().getWindow();
+                stage.close();
             } catch (final IOException ex) {
                 logger.error("Unable to reset all settings", ex);
                 FxUtils.showErrorAlert(translationBundle.getString("ResetSettingsError"), ex.toString(), getClass().getResourceAsStream(SharedVariables.ICON_URL));
@@ -219,7 +223,8 @@ private void saveSettingsAction() {
         mainWindowController.loadMediaButtonVisibility(chbMediaButtons.isSelected());
         if (chbTrayIcon.isSelected()) {
             try {
-                trayIconController.showTrayIcon();
+                trayIconController.hideTrayIcon(); // Destroy the old tray icon
+                trayIconController.showTrayIcon(); // Create a new tray icon (needed for the new settings - language)
             } catch (final IOException ex) {
                 logger.error("Unable to create tray icon", ex);
                 FxUtils.showErrorAlert(translationBundle.getString("TrayIconError"), ex.toString(), getClass().getResourceAsStream(SharedVariables.ICON_URL));
@@ -228,9 +233,13 @@ private void saveSettingsAction() {
             trayIconController.hideTrayIcon();
         }
 
-        showAlertIfLanguageMismatch(settingsController.getProperties().getProperty("locale", DEFAULT_LOCALE));
+        final String languageTag = LanguageController.getLocaleFromLanguageIndex(cboLanguage.getSelectionModel().getSelectedIndex());
+        final Locale locale = Locale.forLanguageTag(languageTag);
+        final ResourceBundle translationBundle = ResourceBundle.getBundle("translations.OpalApplication", locale);
+
+        mainWindowController.updateResourceBundle(translationBundle);
 
-        settingsController.getProperties().setProperty("locale", LanguageController.getLocaleFromLanguageIndex(cboLanguage.getSelectionModel().getSelectedIndex()));
+        settingsController.getProperties().setProperty("locale", languageTag);
 
         settingsController.getProperties().setProperty("theme", cboTheme.getSelectionModel().getSelectedItem());
         settingsController.getProperties().setProperty("loglevel", cboLogLevel.getValue());
@@ -281,19 +290,6 @@ private void saveSettingsAction() {
         }
     }
 
-    /**
-     * Show an information alert if a restart is required
-     *
-     * @param languageToMatch The language that needs to be matched to the combobox
-     */
-    private void showAlertIfLanguageMismatch(final String languageToMatch) {
-        final String newLanguage = LanguageController.getLocaleFromLanguageIndex(cboLanguage.getSelectionModel().getSelectedIndex());
-
-        if (!languageToMatch.equals(newLanguage)) {
-            FxUtils.showInformationAlert(translationBundle.getString("RestartRequired"), getClass().getResourceAsStream(SharedVariables.ICON_URL));
-        }
-    }
-
     /**
      * Method that is invoked when the window should be closed
      *

src/main/java/com/codedead/opal/controller/TrayIconController.java

@@ -1,5 +1,6 @@
 package com.codedead.opal.controller;
 
+import com.codedead.opal.domain.ObservableResourceFactory;
 import com.codedead.opal.interfaces.TrayIconListener;
 import javafx.application.Platform;
 import org.apache.logging.log4j.LogManager;
@@ -11,28 +12,27 @@
 import java.io.IOException;
 import java.util.Arrays;
 import java.util.Objects;
-import java.util.ResourceBundle;
 
 public final class TrayIconController {
 
     private TrayIcon trayIcon;
-    private final ResourceBundle resourceBundle;
+    private final ObservableResourceFactory resourceFactory;
     private final TrayIconListener trayIconListener;
     private final Logger logger;
 
     /**
      * Initialize a new TrayIconController
      *
-     * @param resourceBundle   The {@link ResourceBundle} object
+     * @param resourceFactory  The {@link ObservableResourceFactory} object
      * @param trayIconListener The {@link TrayIconListener} interface
      */
-    public TrayIconController(final ResourceBundle resourceBundle, final TrayIconListener trayIconListener) {
-        if (resourceBundle == null)
-            throw new NullPointerException("ResourceBundle cannot be null!");
+    public TrayIconController(final ObservableResourceFactory resourceFactory, final TrayIconListener trayIconListener) {
+        if (resourceFactory == null)
+            throw new NullPointerException("ResourceFactory cannot be null!");
         if (trayIconListener == null)
             throw new NullPointerException("TrayIconListener cannot be null!");
 
-        this.resourceBundle = resourceBundle;
+        this.resourceFactory = resourceFactory;
         this.trayIconListener = trayIconListener;
         this.logger = LogManager.getLogger(TrayIconController.class);
     }
@@ -54,10 +54,10 @@ private void createTrayIcon() throws IOException {
         final PopupMenu popup = new PopupMenu();
         final BufferedImage trayIconImage = ImageIO.read(Objects.requireNonNull(getClass().getResource("/images/opal.png")));
         final TrayIcon localTrayIcon = new TrayIcon(trayIconImage.getScaledInstance(trayIconSize.width, trayIconSize.height, java.awt.Image.SCALE_SMOOTH));
-        final java.awt.MenuItem displayItem = new java.awt.MenuItem(resourceBundle.getString("Display"));
-        final java.awt.MenuItem settingsItem = new java.awt.MenuItem(resourceBundle.getString("Settings"));
-        final java.awt.MenuItem aboutItem = new java.awt.MenuItem(resourceBundle.getString("About"));
-        final java.awt.MenuItem exitItem = new java.awt.MenuItem(resourceBundle.getString("Exit"));
+        final java.awt.MenuItem displayItem = new java.awt.MenuItem(resourceFactory.getResources().getString("Display"));
+        final java.awt.MenuItem settingsItem = new java.awt.MenuItem(resourceFactory.getResources().getString("Settings"));
+        final java.awt.MenuItem aboutItem = new java.awt.MenuItem(resourceFactory.getResources().getString("About"));
+        final java.awt.MenuItem exitItem = new java.awt.MenuItem(resourceFactory.getResources().getString("Exit"));
 
         if (trayIconListener != null) {
             // Platform.runLater to run on the JavaFX thread

src/main/java/com/codedead/opal/domain/ObservableResourceFactory.java

@@ -0,0 +1,65 @@
+package com.codedead.opal.domain;
+
+import javafx.beans.binding.StringBinding;
+import javafx.beans.property.ObjectProperty;
+import javafx.beans.property.SimpleObjectProperty;
+
+import java.util.ResourceBundle;
+
+public final class ObservableResourceFactory {
+
+    private final ObjectProperty<ResourceBundle> resources;
+
+    /**
+     * Initialize a new ObservableResourceFactory
+     */
+    public ObservableResourceFactory() {
+        resources = new SimpleObjectProperty<>();
+    }
+
+    /**
+     * Get the resources property
+     *
+     * @return The resources property
+     */
+    public ObjectProperty<ResourceBundle> resourcesProperty() {
+        return resources;
+    }
+
+    /**
+     * Get the resources
+     *
+     * @return The resources
+     */
+    public ResourceBundle getResources() {
+        return resourcesProperty().get();
+    }
+
+    /**
+     * Set the resources
+     *
+     * @param resources The resources
+     */
+    public void setResources(final ResourceBundle resources) {
+        resourcesProperty().set(resources);
+    }
+
+    /**
+     * Get a string binding for the given key
+     *
+     * @param key The key
+     * @return The {@link StringBinding} for the given key
+     */
+    public StringBinding getStringBinding(final String key) {
+        return new StringBinding() {
+            {
+                bind(resourcesProperty());
+            }
+
+            @Override
+            public String computeValue() {
+                return getResources().getString(key);
+            }
+        };
+    }
+}

src/main/java/com/codedead/opal/domain/SoundPane.java

@@ -148,6 +148,15 @@ public String getName() {
         return lblName.getText();
     }
 
+    /**
+     * Get the name {@link Label} object
+     *
+     * @return The name {@link Label} object
+     */
+    public Label getNameLabel() {
+        return lblName;
+    }
+
     /**
      * Set the name
      *

src/main/resources/translations/OpalApplication.properties

@@ -33,7 +33,6 @@ Phone=Phone
 Rain=Rain
 Reset=Reset
 ResetSettingsError=Unable to reset all settings!
-RestartRequired=A restart is required in order to change the language!
 Save=Save
 SaveSettingsError=Unable to save settings!
 SaveSoundPreset=Save sound settings

src/main/resources/translations/OpalApplication_de_DE.properties

@@ -33,7 +33,6 @@ Phone=Telefon
 Rain=Regen
 Reset=Zurücksetzen
 ResetSettingsError=Einstellungen konnten nicht zurückgesetzt werden!
-RestartRequired=Zur Änderung der Sprache muss das Programm neu gestartet werden!
 Save=Speichern
 SaveSettingsError=Einstellungen konnten nicht gespeichert werden!
 SaveSoundPreset=Toneinstellungen speichern

src/main/resources/translations/OpalApplication_en_US.properties

@@ -33,7 +33,6 @@ Phone=Phone
 Rain=Rain
 Reset=Reset
 ResetSettingsError=Unable to reset all settings!
-RestartRequired=A restart is required in order to change the language!
 Save=Save
 SaveSettingsError=Unable to save settings!
 SaveSoundPreset=Save sound settings

src/main/resources/translations/OpalApplication_es_ES.properties

@@ -33,7 +33,6 @@ Phone=Teléfono
 Rain=Lluvia
 Reset=Restablecer
 ResetSettingsError=¡No se pueden restablecer todas las configuraciones!
-RestartRequired=¡Es necesario reiniciar para cambiar el idioma!
 Save=Guardar
 SaveSettingsError=¡No se puede guardar la configuración!
 SaveSoundPreset=Guardar configuración de sonido

src/main/resources/translations/OpalApplication_fr_FR.properties

@@ -33,7 +33,6 @@ Phone=Téléphone
 Rain=Pluie
 Reset=Réinitialiser
 ResetSettingsError=Impossible de réinitialiser tous les paramètres!
-RestartRequired=Un redémarrage est nécessaire pour changer la langue!
 Save=Sauvegarder
 SaveSettingsError=Impossible d'enregistrer les paramètres!
 SaveSoundPreset=Enregistrer les paramètres sonores

src/main/resources/translations/OpalApplication_hi_IN.properties

@@ -33,7 +33,6 @@ Phone=फ़ोन
 Rain=बारिश
 Reset=रीसेट
 ResetSettingsError=सभी सेटिंग्स रीसेट करने में असमर्थ!
-RestartRequired=भाषा बदलने के लिए पुनः आरंभ करना आवश्यक है!
 Save=बचाना
 SaveSettingsError=सेटिंग्स सहेजने में असमर्थ!
 SaveSoundPreset=ध्वनि सेटिंग सहेजें

src/main/resources/translations/OpalApplication_jp_JP.properties

@@ -33,7 +33,6 @@ Phone=電話
 Rain=雨
 Reset=リセット
 ResetSettingsError=すべての設定をリセットできません!
-RestartRequired=言語を変更するには再起動が必要です!
 Save=保存
 SaveSettingsError=設定を保存できません!
 SaveSoundPreset=サウンド設定を保存

src/main/resources/translations/OpalApplication_nl_NL.properties

@@ -33,7 +33,6 @@ Phone=Telefoon
 Rain=Regen
 Reset=Reset
 ResetSettingsError=Kan de instellingen niet resetten!
-RestartRequired=Gelieve de applicatie te herstarten om te taal te wijzigen!
 Save=Opslaan
 SaveSettingsError=Kan instellingen niet opslaan!
 SaveSoundPreset=Sla geluidsinstellingen op

src/main/resources/translations/OpalApplication_ru_RU.properties

@@ -33,7 +33,6 @@ Phone=Телефон
 Rain=Дождь
 Reset=Перезагрузить
 ResetSettingsError=Невозможно сбросить все настройки!
-RestartRequired=Для смены языка требуется перезагрузка!
 Save=Сохранять
 SaveSettingsError=Не удалось сохранить настройки!
 SaveSoundPreset=Сохранить настройки звука

src/main/resources/translations/OpalApplication_tr_TR.properties

@@ -33,7 +33,6 @@ Phone=Telefon
 Rain=Yağmur
 Reset=Sıfırla
 ResetSettingsError=Tüm ayarlar sıfırlanamıyor!
-RestartRequired=Dili değiştirmek için yeniden başlatma gereklidir!
 Save=Kaydetmek
 SaveSettingsError=Ayarlar kaydedilemiyor!
 SaveSoundPreset=Ses ayarlarını kaydet

src/main/resources/translations/OpalApplication_uk_UA.properties

@@ -33,7 +33,6 @@ Phone=Телефон
 Rain=Дощ
 Reset=Скинути
 ResetSettingsError=Неможливо скинути всі налаштування!
-RestartRequired=Щоб змінити мову, потрібен перезапуск!
 Save=Збережіть
 SaveSettingsError=Не вдалося зберегти налаштування!
 SaveSoundPreset=Зберегти налаштування звуку

src/main/resources/translations/OpalApplication_zh_CN.properties

@@ -33,7 +33,6 @@ Phone=电话
 Rain=雨
 Reset=重置
 ResetSettingsError=无法重置所有设置！
-RestartRequired=需要重新启动才能更改语言！
 Save=节省
 SaveSettingsError=无法保存设置！
 SaveSoundPreset=保存声音设置