fixed a bug

media_player.py

@@ -901,6 +901,7 @@ class MediaPlayerApp(tk.Tk):
         self._controls_media_path = None
         self._generation_token = 0
         self._explanation_window = None
+        self._explanation_text = None
         self._explanation_generation = 0
 
         self.engine = self._create_engine()
@@ -2030,8 +2031,15 @@ class MediaPlayerApp(tk.Tk):
         text = tk.Text(frame, wrap="word", state="disabled", relief="flat", background="#f6f6f6")
         text.grid(row=1, column=0, sticky="nsew")
         text.insert("1.0", "AI 正在讲解这句话…")
-        ttk.Button(frame, text="关闭", command=window.destroy, takefocus=0).grid(row=2, column=0, sticky="e", pady=(10, 0))
+        self._explanation_text = text
+        ttk.Button(
+            frame,
+            text="关闭",
+            command=lambda: self._close_explanation(generation),
+            takefocus=0,
+        ).grid(row=2, column=0, sticky="e", pady=(10, 0))
         self._explanation_window = window
+        window.protocol("WM_DELETE_WINDOW", lambda: self._close_explanation(generation))
 
         path = self._current_path() or ""
         course_title = Path(path).stem
@@ -2056,7 +2064,7 @@ class MediaPlayerApp(tk.Tk):
                 self.server_url + "/api/v1/sentences/explain",
                 headers=headers,
                 json=payload,
-                timeout=(15, 90),
+                timeout=(15, 180),
             )
             if response.status_code == 401:
                 raise RuntimeError("登录已过期，请在“服务…”中重新登录")
@@ -2074,15 +2082,28 @@ class MediaPlayerApp(tk.Tk):
         window = self._explanation_window
         if window is None:
             return
+        text = self._explanation_text
+        if text is None:
+            return
         try:
-            text = window.nametowidget(window.grid_slaves(row=1, column=0)[0])
             text.configure(state="normal")
             text.delete("1.0", "end")
             text.insert("1.0", explanation)
             text.configure(state="disabled")
             if error:
                 window.title("AI 讲解失败")
-        except (tk.TclError, IndexError):
+                self.status_var.set(explanation)
+        except tk.TclError:
+            pass
+
+    def _close_explanation(self, generation):
+        self._explanation_generation = max(self._explanation_generation, generation + 1)
+        window = self._explanation_window
+        self._explanation_window = None
+        self._explanation_text = None
+        try:
+            window.destroy()
+        except (tk.TclError, AttributeError):
             pass
 
     def _update_status(self):