feat: add Bengali (bn) language support (#5426)

* translation: localize core UI strings for Bengali locale

Update several core UI strings in the Bengali translation file (bn.json). It translates essential labels such as 'Music Blocks Project', 'Refresh browser', and 'Action' to improve the experience for Bengali-speaking users.

* Fix: add localized tooltips for Close and Minimize buttons

* docs: separate UI logic from translation strings

* docs: update master translation file bn.po

* Add Bengali (bn) language support to UI and locales

* style: fix formatting with prettier

* test: update expected translation call counts for Bengali

* chore: re-run CI checks

* style: format files to comply with Prettier v6

Author: shuvro-git

index.html

@@ -474,8 +474,10 @@
                     <li><a id="te"></a></li>
                     <li><a id="ibo"></a></li>
                     <li><a id="ar"></a></li>
+                    <li><a id="bn"></a></li>
                     <li><a id="he"></a></li>
                     <li><a id="ur"></a></li>
+                    
                 </ul>
 
                 <ul style="display: none;" id="themedropdown" class="dropdown-content">

js/__tests__/toolbar.test.js

@@ -95,14 +95,14 @@ describe("Toolbar Class", () => {
     test("sets correct strings for _THIS_IS_MUSIC_BLOCKS_ true", () => {
         global._THIS_IS_MUSIC_BLOCKS_ = true;
         toolbar.init({});
-        expect(global._).toHaveBeenCalledTimes(134);
+        expect(global._).toHaveBeenCalledTimes(135);
         expect(global._).toHaveBeenNthCalledWith(1, "About Music Blocks");
     });
 
     test("sets correct strings for _THIS_IS_MUSIC_BLOCKS_ false", () => {
         global._THIS_IS_MUSIC_BLOCKS_ = false;
         toolbar.init({});
-        expect(global._).toHaveBeenCalledTimes(116);
+        expect(global._).toHaveBeenCalledTimes(117);
         expect(global._).toHaveBeenNthCalledWith(1, "About Turtle Blocks");
     });
 

js/languagebox.js

@@ -176,6 +176,15 @@ class LanguageBox {
         this.hide();
     }
 
+    /**
+     * @public
+     * @returns {void}
+     */
+    bn_onclick() {
+        this._language = "bn";
+        this.hide();
+    }
+
     /**
      * @public
      * @returns {void}
@@ -235,6 +244,7 @@ class LanguageBox {
             he: "רענן את הדפדפן כדי לשנות את העדפת השפה שלך.",
             ayc: "Actualice su navegador para cambiar su preferencia de idioma.",
             quz: "Actualice su navegador para cambiar su preferencia de idioma.",
+            bn: "ভাষা পরিবর্তন করতে আপনার ব্রাউজার রিফ্রেশ করুন।",
             gug: "Actualice su navegador para cambiar su preferencia de idioma.",
             ur: "اپنی زبان کی ترجیح کو تبدیل کرنے کے لئے اپنے براؤزر کو تازہ دم کریں۔"
         };

js/toolbar.js

@@ -107,6 +107,7 @@ class Toolbar {
                 ["ibo", _("igbo"), "innerHTML"],
                 ["ar", _("عربى"), "innerHTML"],
                 ["te", _("తెలుగు"), "innerHTML"],
+                ["bn", _("বাংলা"), "innerHTML"],
                 ["he", _("עִברִית"), "innerHTML"],
                 ["ur", _("اردو"), "innerHTML"]
             ];
@@ -242,6 +243,7 @@ class Toolbar {
                 ["ibo", _("igbo"), "innerHTML"],
                 ["ar", _("عربى"), "innerHTML"],
                 ["te", _("తెలుగు"), "innerHTML"],
+                ["bn", _("বাংলা"), "innerHTML"],
                 ["he", _("עִברִית"), "innerHTML"],
                 ["ur", _("اردو"), "innerHTML"]
             ];
@@ -1171,6 +1173,7 @@ class Toolbar {
             "ibo",
             "ar",
             "te",
+            "bn",
             "he",
             "ur"
         ];