Merge branch 'client/lang-button-dropdown' into 'main'

feat: Client language switching as dropdown menu

Closes #18

See merge request cse1105/2025-2026/teams/csep-team-76!21

client/src/main/java/client/scenes/FoodpalApplicationCtrl.java

@@ -4,7 +4,6 @@ package client.scenes;
 import java.io.IOException;
 import java.util.Collections;
 import java.util.List;
-import java.util.Locale;
 
 import client.exception.UpdateException;
 import client.scenes.recipe.IngredientListCtrl;
@@ -23,7 +22,6 @@ import commons.ws.Topics;
 import commons.ws.messages.Message;
 import jakarta.inject.Inject;
 import javafx.application.Platform;
-import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.control.Alert;
 import javafx.scene.control.Button;
@@ -46,18 +44,6 @@ public class FoodpalApplicationCtrl implements LocaleAware {
     public VBox detailsScreen;
     public HBox editableTitleArea;
 
-
-    // all of these aren't used with only my part of the code
-    // everything in the top bar ===
-    @FXML
-    private Button flagEnButton;   //already here for advanced stuff
-
-    @FXML
-    private Button flagNlButton;   //already here for advanced stuff
-
-    @FXML
-    private Button flagPlButton;   //already here for advanced stuff
-
     // everything in the left lane
     @FXML
     public Label recipesLabel;
@@ -110,7 +96,31 @@ public class FoodpalApplicationCtrl implements LocaleAware {
 
         initializeWebSocket();
     }
+    private void initRecipeList() {
+        // Show recipe name in the list
+        recipeList.setCellFactory(list -> new ListCell<>() {
+            @Override
+            protected void updateItem(Recipe item, boolean empty) {
+                super.updateItem(item, empty);
+                setText(empty || item == null ? "" : item.getName());
+            }
+        });
+        // When your selection changes, update details in the panel
+        recipeList.getSelectionModel().selectedItemProperty().addListener(
+                (obs, oldRecipe, newRecipe) -> {
+                    showRecipeDetails(newRecipe);
+                    updateFavouriteButton(newRecipe);
+                }
+        );
 
+        // Double-click to go to detail screen
+        recipeList.setOnMouseClicked(event -> {
+            final int DOUBLE_CLICK = 2;   //to not get magic number:P
+            if (event.getClickCount() == DOUBLE_CLICK) {
+                openSelectedRecipe();
+            }
+        });
+    }
     private void initializeWebSocket() {
         webSocketUtils.connect(() -> {
             webSocketUtils.subscribe(Topics.RECIPES, (Message _) -> {
@@ -132,11 +142,7 @@ public class FoodpalApplicationCtrl implements LocaleAware {
             });
         });
     }
-
+    private void initStepsIngredientsList() {
-    @Override
-    public void initializeComponents() {
-        config = configService.getConfig();
-        // TODO Reduce code duplication??
         // Initialize callback for ingredient list updates
         this.ingredientListCtrl.setUpdateCallback(newList -> {
             Recipe selectedRecipe = recipeList.getSelectionModel().getSelectedItem();
@@ -166,29 +172,13 @@ public class FoodpalApplicationCtrl implements LocaleAware {
                 throw new UpdateException("Unable to update recipe to server for " + selectedRecipe);
             }
         });
-        // Show recipe name in the list
+    }
-        recipeList.setCellFactory(list -> new ListCell<>() {
+    @Override
-            @Override
+    public void initializeComponents() {
-            protected void updateItem(Recipe item, boolean empty) {
+        config = configService.getConfig();
-                super.updateItem(item, empty);
+        initStepsIngredientsList();
-                setText(empty || item == null ? "" : item.getName());
+        initRecipeList();
-            }
-        });
-        // When your selection changes, update details in the panel
-        recipeList.getSelectionModel().selectedItemProperty().addListener(
-                (obs, oldRecipe, newRecipe) -> {
-                    showRecipeDetails(newRecipe);
-                    updateFavouriteButton(newRecipe);
-                }
-        );
 
-        // Double-click to go to detail screen
-        recipeList.setOnMouseClicked(event -> {
-            final int DOUBLE_CLICK = 2;   //to not get magic number:P
-            if (event.getClickCount() == DOUBLE_CLICK) {
-                openSelectedRecipe();
-            }
-        });
         refresh();
         updateFavouriteButton(recipeList.getSelectionModel().getSelectedItem());
     }
@@ -212,13 +202,6 @@ public class FoodpalApplicationCtrl implements LocaleAware {
         printRecipeButton.setText(getLocaleString("menu.button.print"));
 
         recipesLabel.setText(getLocaleString("menu.label.recipes"));
-
-        // TODO propagate ResourceBundle lang changes to nested controller
-        // ingredientsLabel.setText(getLocaleString("menu.label.ingredients"));
-        // preparationLabel.setText(getLocaleString("menu.label.preparation"));
-
-        // addIngredientButton.setText(getLocaleString("menu.button.add.ingredient"));
-        // addPreparationStepButton.setText(getLocaleString("menu.button.add.step"));
     }
 
     @Override
@@ -343,15 +326,6 @@ public class FoodpalApplicationCtrl implements LocaleAware {
         editableTitleArea.getChildren().add(edit);
         edit.requestFocus();
     }
-
-    // Language buttons
-    @FXML
-    private void switchLocale(ActionEvent event) {
-        Button button = (Button)event.getSource();
-        String lang = (String)button.getUserData();
-        localeManager.setLocale(Locale.of(lang));
-    }
-
     @FXML
     private void makePrintable() {
         System.out.println("Recipe printed");

client/src/main/java/client/scenes/LangSelectMenuCtrl.java

@@ -0,0 +1,100 @@
+package client.scenes;
+
+import client.utils.LocaleAware;
+import client.utils.LocaleManager;
+import com.google.inject.Inject;
+import javafx.event.ActionEvent;
+import javafx.fxml.FXML;
+import javafx.scene.control.ComboBox;
+import javafx.scene.control.Label;
+import javafx.scene.control.ListCell;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.HBox;
+import javafx.util.StringConverter;
+
+import java.io.InputStream;
+import java.util.Locale;
+
+/**
+ * The language selection menu controller.
+ * This needs to implement {@link LocaleAware LocaleAware} so that the
+ * <code>getLocaleString(String)</code> function is available.
+ */
+public class LangSelectMenuCtrl implements LocaleAware {
+    public ComboBox<String> langSelectMenu;
+    private final LocaleManager manager;
+
+    @Inject
+    public LangSelectMenuCtrl(LocaleManager manager) {
+        this.manager = manager;
+    }
+
+    /**
+     * Switches the locale of the application depending on which button the user selects in the list.
+     * @param event The action event triggered by the user.
+     */
+    @FXML
+    private void switchLocale(ActionEvent event) {
+        String lang = langSelectMenu.getSelectionModel().getSelectedItem();
+        manager.setLocale(Locale.of(lang));
+    }
+
+    @Override
+    public void initializeComponents() {
+        langSelectMenu.getItems().setAll("en", "pl", "nl");
+        langSelectMenu.setConverter(new StringConverter<String>() {
+            @Override
+            public String toString(String s) {
+                if (s == null) {
+                    return "";
+                }
+                return getLocaleString("lang." + s + ".display");
+            }
+
+            @Override
+            public String fromString(String s) {
+                return s;
+            }
+        });
+        langSelectMenu.setCellFactory(list -> new ListCell<>() {
+            @Override
+            protected void updateItem(String item, boolean empty) {
+                final int IMAGE_HEIGHT = 32;
+                final int HBOX_SPACING = 10;
+                super.updateItem(item, empty);
+                if (item == null || empty) {
+                    setText(null);
+                    setGraphic(null);
+                    return;
+                }
+                InputStream imageStream = getClass().getResourceAsStream("/flag_" + item + ".png");
+                if (imageStream == null) {
+                    setGraphic(new HBox(new Label(getLocaleString("lang." + item + ".display"))));
+                    return;
+                }
+                Image img = new Image(imageStream);
+                ImageView imageView = new ImageView(img);
+                imageView.setFitHeight(IMAGE_HEIGHT);
+                imageView.setFitWidth(IMAGE_HEIGHT);
+                setGraphic(
+                        new HBox(
+                                HBOX_SPACING,
+                                imageView,
+                                new Label(getLocaleString("lang." + item + ".display"))
+                        )
+                );
+            }
+        });
+    }
+
+    @Override
+    public void updateText() {
+        // doesn't do anything; the text doesn't need to be updated.
+    }
+
+    @Override
+    public LocaleManager getLocaleManager() {
+        return manager;
+    }
+}

client/src/main/resources/client/scenes/FoodpalApplication.fxml

@@ -15,6 +15,7 @@
 <?import javafx.scene.layout.VBox?>
 <?import javafx.scene.text.Font?>
 
+<?import javafx.scene.control.ComboBox?>
 <BorderPane prefHeight="800.0" prefWidth="1200.0" xmlns="http://javafx.com/javafx/25" xmlns:fx="http://javafx.com/fxml/1" fx:controller="client.scenes.FoodpalApplicationCtrl">
 
     <!-- TOP BAR -->
@@ -23,58 +24,12 @@
             <padding>
                 <Insets bottom="10" left="10" right="10" top="10" />
             </padding>
-            <GridPane>
+            <Label prefHeight="56.0" prefWidth="158.0" text="FoodPal">
-                <columnConstraints>
+                <font>
-                    <ColumnConstraints hgrow="SOMETIMES" maxWidth="198.0" minWidth="10.0" prefWidth="130.0" />
+                    <Font name="System Bold" size="29.0" />
-                    <ColumnConstraints hgrow="SOMETIMES" maxWidth="95.0" minWidth="2.0" prefWidth="70.0" />
+                </font>
-                </columnConstraints>
+            </Label>
-                <rowConstraints>
+            </HBox>
-                    <RowConstraints maxHeight="54.0" minHeight="10.0" prefHeight="54.0" vgrow="SOMETIMES" />
-                    <RowConstraints maxHeight="25.0" minHeight="6.0" prefHeight="6.0" vgrow="SOMETIMES" />
-                    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
-                </rowConstraints>
-                <children>
-
-                    <Label prefHeight="56.0" prefWidth="158.0" text="FoodPal">
-                        <font>
-                            <Font name="System Bold" size="29.0" />
-                        </font>
-                    </Label>
-                    <ButtonBar prefHeight="40.0" prefWidth="200.0" GridPane.rowIndex="2">
-                        <buttons>
-                            <ToolBar prefHeight="35.0" prefWidth="123.0">
-                                <items>
-                                    <Button fx:id="flagEnButton" minWidth="33.0" onAction="#switchLocale" userData="en" prefHeight="25.0" prefWidth="33.0" text="EN" />
-                                    <Button fx:id="flagNlButton" onAction="#switchLocale" userData="nl" text="NL" />
-                                    <Button fx:id="flagPlButton" onAction="#switchLocale" userData="pl" text="PL" />
-                                </items>
-                            </ToolBar>
-                        </buttons>
-                    </ButtonBar>
-                </children>
-            </GridPane>
-
-            <Pane HBox.hgrow="ALWAYS" />
-
-            <HBox spacing="5" />
-            <GridPane prefHeight="90.0" prefWidth="114.0">
-                <columnConstraints>
-                    <ColumnConstraints hgrow="SOMETIMES" maxWidth="315.0" minWidth="10.0" prefWidth="32.1666259765625" />
-                    <ColumnConstraints hgrow="SOMETIMES" maxWidth="315.0" minWidth="10.0" prefWidth="24.8333740234375" />
-                    <ColumnConstraints hgrow="SOMETIMES" maxWidth="173.0" minWidth="10.0" prefWidth="28.6666259765625" />
-                    <ColumnConstraints hgrow="SOMETIMES" maxWidth="95.0" minWidth="10.0" prefWidth="34.0" />
-                </columnConstraints>
-                <rowConstraints>
-                    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
-                    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
-                    <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
-                </rowConstraints>
-                <children>
-
-                    <Button fx:id="refreshButton" onAction="#refresh" prefHeight="25.0" prefWidth="34.0" text="⟳" GridPane.columnIndex="3" GridPane.rowIndex="2" />
-                </children>
-            </GridPane>
-        </HBox>
     </top>
 
     <!-- LEFT: RECIPE LIST -->
@@ -83,7 +38,8 @@
             <padding>
                 <Insets bottom="10" left="10" right="10" top="10" />
             </padding>
-
+            <fx:include source="LangSelect.fxml" />
+            <Button fx:id="refreshButton" onAction="#refresh" prefHeight="25.0" prefWidth="34.0" text="⟳" GridPane.columnIndex="3" GridPane.rowIndex="2" />
             <Label fx:id="recipesLabel" text="Recipes">
                 <font>
                     <Font name="System Bold" size="15.0" />

client/src/main/resources/client/scenes/LangSelect.fxml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import java.lang.*?>
+<?import java.util.*?>
+<?import javafx.scene.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+
+<ComboBox
+        fx:id="langSelectMenu"
+        xmlns="http://javafx.com/javafx/25"
+        xmlns:fx="http://javafx.com/fxml/1"
+        onAction="#switchLocale"
+        fx:controller="client.scenes.LangSelectMenuCtrl"
+>
+</ComboBox>

client/src/main/resources/locale/lang.properties

@@ -24,3 +24,7 @@ menu.button.remove.step=Remove Step
 menu.button.edit=Edit
 menu.button.clone=Clone
 menu.button.print=Print recipe
+
+lang.en.display=English
+lang.nl.display=Dutch
+lang.pl.display=Polish

client/src/main/resources/locale/lang_en.properties

@@ -24,3 +24,7 @@ menu.button.remove.step=Remove Step
 menu.button.edit=Edit
 menu.button.clone=Clone
 menu.button.print=Print recipe
+
+lang.en.display=English
+lang.nl.display=Nederlands
+lang.pl.display=Polski

client/src/main/resources/locale/lang_nl.properties

@@ -24,3 +24,7 @@ menu.button.remove.step=Stap verwijderen
 menu.button.edit=Bewerken
 menu.button.clone=Dupliceren
 menu.button.print=Recept afdrukken
+
+lang.en.display=English
+lang.nl.display=Nederlands
+lang.pl.display=Polski

client/src/main/resources/locale/lang_pl.properties

@@ -24,3 +24,7 @@ menu.button.remove.step=Usuń instrukcję
 menu.button.edit=Edytuj
 menu.button.clone=Duplikuj
 menu.button.print=Drukuj przepis
+
+lang.en.display=English
+lang.nl.display=Nederlands
+lang.pl.display=Polski