i3-companion: rework a bit Quake console to use events only

bin/i3-companion

@@ -394,35 +394,41 @@ async def quake_console(i3, event):
         logger.warn(f"unable to parse payload {event}: {exc}")
         return
 
+    # Look for the terminal or spawn it
     tree = await i3.get_tree()
-    term = tree.find_instanced(term_name)
-    if not term:
-        await i3.command(f"exec exec {term_exec} --name {term_name}")
-        tries = 5
-        while not term and tries:
-            tree = await i3.get_tree()
-            term = tree.find_instanced(term_name)
-            await asyncio.sleep(0.2)
-            tries -= 1
-    if not term:
-        raise RuntimeError("unable to spawn terminal")
-    term = term[0]
+    try:
+        term = tree.find_instanced(term_name)[0]
+    except IndexError:
+        quake_window = asyncio.get_event_loop().create_future()
+
+        def wait_for_quake(i3, event):
+            w = event.container
+            if quake_window.done() or w.window_instance != term_name:
+                return
+            quake_window.set_result(w)
+
+        i3.on(I3Event.WINDOW_NEW, wait_for_quake)
+        try:
+            await i3.command(f"exec exec {term_exec} --name {term_name}")
+            done, pending = await asyncio.wait((quake_window,), timeout=1)
+        finally:
+            i3.off(wait_for_quake)
+        if not done:
+            raise RuntimeError("unable to spawn terminal")
+        term = quake_window.result()
+        await term.command("move window to scratchpad")
+
     workspaces = await i3.get_workspaces()
     workspace = [ws for ws in workspaces if ws.focused][0]
-    ws_x = workspace.rect.x
-    ws_y = workspace.rect.y
-    ws_width = workspace.rect.width
-    ws_height = workspace.rect.height
-    width = ws_width
+    ws_x, ws_y = workspace.rect.x, workspace.rect.y
+    ws_width, ws_height = workspace.rect.width, workspace.rect.height
     height = int(ws_height * height)
-    posx = ws_x
-    posy = ws_y
     command = (
         f"[instance={term_name}] "
         "border none,"
-        f"resize set {width} px {height} px,"
+        f"resize set {ws_width} px {height} px,"
         "scratchpad show,"
-        f"move absolute position {posx}px {posy}px"
+        f"move absolute position {ws_x}px {ws_y}px"
     )
     logger.debug("QuakeConsole: %s", command)
     await i3.command(command)
@@ -544,14 +550,10 @@ async def output_update(i3, event):
     screen_resources = randr.get_screen_resources_current(window)
     current_setup = set()
     for output in screen_resources.outputs:
-        output_info = randr.get_output_info(
-            window, output, screen_resources.timestamp
-        )
+        output_info = randr.get_output_info(window, output, screen_resources.timestamp)
         if output_info.crtc == 0:
             continue
-        crtc_info = randr.get_crtc_info(
-            window, output_info.crtc, output_info.timestamp
-        )
+        crtc_info = randr.get_crtc_info(window, output_info.crtc, output_info.timestamp)
         current_setup.add(
             (
                 output_info.name,