Add multiple languages (i18n) support.

Now you can add a version in profile manage page.

Add install java button and dialog.

window.py

@@ -116,13 +116,17 @@ class LauncherMainWindow(QMainWindow):
                    "Suggestions are always welcome!")
         self.icon_label = QLabel()
         self.icon_label.setObjectName("icon_label")
-        self.dev_info_box = QLabel(content)
+        self.dev_info_box = QLabel(self.app.tr_text(content))
         self.dev_info_box.setObjectName("dev_info_box")
-        self.dev_info_2 = QLabel(message)
+        self.dev_info_2 = QLabel(self.app.tr_text(message))
         self.dev_info_2.setObjectName("dev_info_message")
-        self.version_label = QLabel("Current version: {}".format(self.app.launcher_version))
+        self.version_label = QLabel(self.app.tr_text(
+            "Current version: {version}", version=self.app.launcher_version
+        ))
         self.version_label.setObjectName("version_label")
-        self.repo_url_label = QLabel(f"<a href=\"{MAIN_REPO_URL}\">Main repo</a>")
+        self.repo_url_label = QLabel(
+            f'<a href="{MAIN_REPO_URL}">{self.app.tr_text("Main repo")}</a>'
+        )
         self.repo_url_label.setObjectName("repo_url_label")
         self.repo_url_label.setOpenExternalLinks(True)
 
@@ -130,7 +134,7 @@ class LauncherMainWindow(QMainWindow):
             image = QPixmap(Path(self.app.resources_dir, "pictures", "in_progress.png"))
             self.icon_label.setPixmap(image.scaled(300, 300))
         else:
-            self.icon_label.setText("Ouch. The icon is missing.")
+            self.icon_label.setText(self.app.tr_text("Ouch. The icon is missing."))
 
         # Dialog
         self.download_dialog = ProgressDialog(self)
@@ -146,12 +150,13 @@ class LauncherMainWindow(QMainWindow):
         self.home_layout.addWidget(self.repo_url_label, alignment=Qt.AlignmentFlag.AlignHCenter)
         self.home_layout.addStretch()
 
-        # test page
-        self.test_page = TestPage(
-            app=self.app,
-            parent=self,
-            widget_manager=self.app.widget_manager
-        )
+        if self.app.debug:
+            # test page
+            self.test_page = TestPage(
+                app=self.app,
+                parent=self,
+                widget_manager=self.app.widget_manager
+            )
 
         self.launch_profile_page = LaunchProfilePage(
             app=self.app,
@@ -172,7 +177,8 @@ class LauncherMainWindow(QMainWindow):
 
         # Add page
         self.central.addWidget(self.home_page)
-        self.central.addWidget(self.test_page)
+        if self.app.debug:
+            self.central.addWidget(self.test_page)
         self.central.addWidget(self.account_page)
         self.central.addWidget(self.settings_page)
         self.central.addWidget(self.create_profile_page)
@@ -190,18 +196,31 @@ class LauncherMainWindow(QMainWindow):
         # Toolbar
 
         # Test Window btn
-        self.open_test_page = self.toolbar.add_button(" Tests", icon=self.app.get_icon(Path(self.app.icon_dir, "debug.png")))
-        self.open_test_page.setObjectName("open_test_page")
+        if self.app.debug:
+            self.open_test_page = self.toolbar.add_button(" Tests")
+            self.app.set_reloadable_toolbutton_icon(
+                self.open_test_page,
+                Path(self.app.icon_dir, "debug.png"),
+            )
+            self.open_test_page.setObjectName("open_test_page")
 
         # Launch profile btn
         self.open_launch_profile_page = self.toolbar.add_button(" Launch Profile",
                                                                 icon=self.app.get_icon(Path(self.app.icon_dir, "profile_default.png"), True))
 
         # Home btn
-        self.home_button = self.toolbar.add_button(" Home", icon=self.app.get_icon(Path(self.app.icon_dir, "home.png")))
+        self.home_button = self.toolbar.add_button(" Home")
+        self.app.set_reloadable_toolbutton_icon(
+            self.home_button,
+            Path(self.app.icon_dir, "home.png"),
+        )
 
         # Settings btn (will be moved to the bottom of the toolbar)
-        self.open_settings_page = self.toolbar.add_button(" Settings", icon=self.app.get_icon(Path(self.app.icon_dir, "settings.png")))
+        self.open_settings_page = self.toolbar.add_button(" Settings")
+        self.app.set_reloadable_toolbutton_icon(
+            self.open_settings_page,
+            Path(self.app.icon_dir, "settings.png"),
+        )
 
         # Account btn (will be moved to the bottom (or last one item) of the toolbar
         self.open_account_page = self.toolbar.add_button(" Accounts", icon=self.app.get_icon(Path(self.app.icon_dir, "head.png"), True))
@@ -209,8 +228,11 @@ class LauncherMainWindow(QMainWindow):
         # current account's avatar
 
         # Profile btn
-        self.open_create_profile_page = self.toolbar.add_button("Create Profile",
-                                                                icon=self.app.get_icon(Path(self.app.icon_dir, "add.png")))
+        self.open_create_profile_page = self.toolbar.add_button("Create Profile")
+        self.app.set_reloadable_toolbutton_icon(
+            self.open_create_profile_page,
+            Path(self.app.icon_dir, "add.png"),
+        )
 
         # manage profile
         self.open_manage_profile_page = self.toolbar.add_button(
@@ -220,7 +242,8 @@ class LauncherMainWindow(QMainWindow):
 
         # Bind tool buttons
         self.toolbar.addWidget(self.home_button)
-        self.toolbar.addWidget(self.open_test_page)
+        if self.app.debug:
+            self.toolbar.addWidget(self.open_test_page)
         self.toolbar.addWidget(self.open_create_profile_page)
         self.toolbar.addWidget(self.open_launch_profile_page)
         self.toolbar.addWidget(self.open_manage_profile_page)
@@ -238,9 +261,10 @@ class LauncherMainWindow(QMainWindow):
             lambda: self.set_current_page(self.home_page, self.home_button)
         )
 
-        self.open_test_page.clicked.connect(
-            lambda: self.set_current_page(self.test_page, self.open_test_page)
-        )
+        if self.app.debug:
+            self.open_test_page.clicked.connect(
+                lambda: self.set_current_page(self.test_page, self.open_test_page)
+            )
 
         self.open_launch_profile_page.clicked.connect(
             lambda: self.set_current_page(self.launch_profile_page, self.open_launch_profile_page)
@@ -266,6 +290,31 @@ class LauncherMainWindow(QMainWindow):
         self.bind_event()
 
         self.set_current_page(self.home_page, self.home_button)
+        self.app.i18n.language_changed.connect(self.retranslate_ui)
+        self.retranslate_ui()
+
+    def retranslate_ui(self, *_args):
+        tr = self.app.tr_text
+        self.dev_info_box.setText(tr("Still digging!"))
+        self.dev_info_2.setText(tr(
+            "If you find an issue, you can report it in the main repository. "
+            "Suggestions are always welcome!"
+        ))
+        self.version_label.setText(
+            tr("Current version: {version}", version=self.app.launcher_version)
+        )
+        self.repo_url_label.setText(
+            f'<a href="{MAIN_REPO_URL}">{tr("Main repo")}</a>'
+        )
+        self.home_button.setText(" " + tr("Home"))
+        self.open_launch_profile_page.setText(" " + tr("Launch Profile"))
+        self.open_settings_page.setText(" " + tr("Settings"))
+        self.open_account_page.setText(" " + tr("Accounts"))
+        self.open_create_profile_page.setText(" " + tr("Create Profile"))
+        self.open_manage_profile_page.setText(" " + tr("Manage Profiles"))
+        if self.app.debug:
+            self.open_test_page.setText(" " + tr("Tests"))
+        self.toolbar.update_all()
 
     @Slot(object)
     def ask_request(self, context: AskForRequest):
@@ -309,8 +358,8 @@ class LauncherMainWindow(QMainWindow):
     @Slot(dict)
     def show_and_print_error(self, context: dict):
         error = context.get("error", None)
-        title = context.get("title", "Error")
-        message = context.get("message", "No content")
+        title = context.get("title", self.app.tr_text("Error"))
+        message = context.get("message", self.app.tr_text("No content"))
 
         if isinstance(error, list):
             self.app.logger.error("".join(error))
@@ -335,15 +384,15 @@ class LauncherMainWindow(QMainWindow):
 
     @Slot(str)
     def show_error(self, message):
-        messagebox.error(self, "Error", message=message)
+        messagebox.error(self, self.app.tr_text("Error"), message=message)
 
     @Slot(str)
     def show_warning(self, widget):
-        messagebox.warning(self, "Warning", message=widget)
+        messagebox.warning(self, self.app.tr_text("Warning"), message=widget)
 
     @Slot(str)
     def show_info(self, widget):
-        messagebox.info(self, "Info", message=widget)
+        messagebox.info(self, self.app.tr_text("Info"), message=widget)
 
     def set_current_page(self, page: QWidget, related_button: QToolButton):
         self.central.setCurrentWidget(page)