fix(ui): prevent segfault by validating widget existence in async callbacks

Signed-off-by: Boris Yumankulov <boria138@altlinux.org>

portprotonqt/main_window.py

@@ -2314,6 +2314,7 @@ class MainWindow(QMainWindow):
 
     def openGameDetailPage(self, name, description, cover_path=None, appid="", exec_line="", controller_support="", last_launch="", formatted_playtime="", protondb_tier="", game_source="", anticheat_status=""):
         detailPage = QWidget()
+        if not hasattr(self, '_animations'):
             self._animations = {}
         imageLabel = QLabel()
         imageLabel.setFixedSize(300, 450)
@@ -2322,25 +2323,34 @@ class MainWindow(QMainWindow):
 
         # Функция загрузки изображения и обновления стилей
         def load_image_and_restore_effect():
-            if not detailPage or detailPage.isHidden():
+            # Check if detail page still exists and is valid
-                logger.warning("Detail page is None or hidden, skipping image load")
+            if not detailPage or detailPage.isHidden() or detailPage.parent() is None:
+                logger.warning("Detail page is None, hidden, or no longer valid, skipping image load")
                 return
 
+            try:
                 detailPage.setWindowOpacity(1.0)
+            except RuntimeError:
+                logger.warning("Detail page already deleted, skipping opacity set")
+                return
 
             if cover_path:
                 def on_pixmap_ready(pixmap):
-                    if not detailPage or detailPage.isHidden():
+                    # Check if detail page still exists and is valid
-                        logger.warning("Detail page is None or hidden, skipping pixmap update")
+                    if not detailPage or detailPage.isHidden() or detailPage.parent() is None:
+                        logger.warning("Detail page is None, hidden, or no longer valid, skipping pixmap update")
                         return
+                    try:
                         rounded = round_corners(pixmap, 10)
                         imageLabel.setPixmap(rounded)
                         logger.debug("Pixmap set for imageLabel")
 
                         def on_palette_ready(palette):
-                        if not detailPage or detailPage.isHidden():
+                            # Check if detail page still exists and is valid
-                            logger.warning("Detail page is None or hidden, skipping palette update")
+                            if not detailPage or detailPage.isHidden() or detailPage.parent() is None:
+                                logger.warning("Detail page is None, hidden, or no longer valid, skipping palette update")
                                 return
+                            try:
                                 dark_palette = [self.darkenColor(color, factor=200) for color in palette]
                                 stops = ",\n".join(
                                     [f"stop:{i/(len(dark_palette)-1):.2f} {dark_palette[i].name()}" for i in range(len(dark_palette))]
@@ -2348,12 +2358,18 @@ class MainWindow(QMainWindow):
                                 detailPage.setStyleSheet(self.theme.detail_page_style(stops))
                                 detailPage.update()
                                 logger.debug("Stylesheet updated with palette")
-
+                            except RuntimeError:
+                                logger.warning("Detail page already deleted, skipping palette stylesheet update")
                         self.getColorPalette_async(cover_path, num_colors=5, callback=on_palette_ready)
+                    except RuntimeError:
+                        logger.warning("Detail page already deleted, skipping pixmap update")
                 load_pixmap_async(cover_path, 300, 450, on_pixmap_ready)
             else:
+                try:
                     detailPage.setStyleSheet(self.theme.DETAIL_PAGE_NO_COVER_STYLE)
                     detailPage.update()
+                except RuntimeError:
+                    logger.warning("Detail page already deleted, skipping no-cover stylesheet update")
 
         def cleanup_animation():
             if detailPage in self._animations:
@@ -2594,6 +2610,9 @@ class MainWindow(QMainWindow):
                 return
             if not self._current_detail_page or self._current_detail_page.isHidden() or not self._current_detail_page.parent():
                 return
+            # Additional check: make sure the detail page in the stacked widget is still our current detail page
+            if self.stackedWidget.currentWidget() != self._current_detail_page and self._current_detail_page not in [self.stackedWidget.widget(i) for i in range(self.stackedWidget.count())]:
+                return
 
             if results:
                 game = results[0]  # Берем первый результат
@@ -2617,6 +2636,7 @@ class MainWindow(QMainWindow):
                 has_data = False
 
                 if main_story_time is not None:
+                    try:
                         mainStoryTitle = QLabel(_("MAIN STORY"))
                         mainStoryTitle.setStyleSheet(self.theme.LAST_LAUNCH_TITLE_STYLE)
                         mainStoryValue = QLabel(main_story_time)
@@ -2625,8 +2645,11 @@ class MainWindow(QMainWindow):
                         hltbLayout.addWidget(mainStoryValue)
                         hltbLayout.addSpacing(30)
                         has_data = True
+                    except RuntimeError:
+                        logger.warning("Detail page already deleted, skipping main story time update")
 
                 if main_extra_time is not None:
+                    try:
                         mainExtraTitle = QLabel(_("MAIN + SIDES"))
                         mainExtraTitle.setStyleSheet(self.theme.PLAY_TIME_TITLE_STYLE)
                         mainExtraValue = QLabel(main_extra_time)
@@ -2635,8 +2658,11 @@ class MainWindow(QMainWindow):
                         hltbLayout.addWidget(mainExtraValue)
                         hltbLayout.addSpacing(30)
                         has_data = True
+                    except RuntimeError:
+                        logger.warning("Detail page already deleted, skipping main extra time update")
 
                 if completionist_time is not None:
+                    try:
                         completionistTitle = QLabel(_("COMPLETIONIST"))
                         completionistTitle.setStyleSheet(self.theme.LAST_LAUNCH_TITLE_STYLE)
                         completionistValue = QLabel(completionist_time)
@@ -2644,6 +2670,8 @@ class MainWindow(QMainWindow):
                         hltbLayout.addWidget(completionistTitle)
                         hltbLayout.addWidget(completionistValue)
                         has_data = True
+                    except RuntimeError:
+                        logger.warning("Detail page already deleted, skipping completionist time update")
 
                 # Если есть данные, добавляем layout во вторую строку
                 if has_data: