migrazione verso gitea

trash/async_runner.py

@@ -0,0 +1,33 @@
+"""Minimal bridge between Tkinter and an external asyncio loop."""
+
+import asyncio
+from typing import Callable
+
+
+class AsyncRunner:
+    """Run coroutines on a background loop and marshal results back to Tk."""
+
+    def __init__(self, tk_root, loop: asyncio.AbstractEventLoop):
+        """Store the Tk root widget and the loop used for background work."""
+        self.tk = tk_root
+        self.loop = loop
+
+    def run(self, awaitable, on_ok: Callable, on_err: Callable, busy=None, message: str | None = None):
+        """Schedule an awaitable and optionally show a busy indicator."""
+        if busy:
+            busy.show(message or "Lavoro in corso...")
+        fut = asyncio.run_coroutine_threadsafe(awaitable, self.loop)
+        self._poll(fut, on_ok, on_err, busy)
+
+    def _poll(self, fut, on_ok, on_err, busy):
+        """Poll the future until completion and invoke the proper callback."""
+        if fut.done():
+            if busy:
+                busy.hide()
+            try:
+                res = fut.result()
+                on_ok(res)
+            except Exception as ex:
+                on_err(ex)
+            return
+        self.tk.after(50, lambda: self._poll(fut, on_ok, on_err, busy))