Drop the dependency on libnotify for notifications on Linux

kitty/notify.py

@@ -2,7 +2,6 @@
 # vim:fileencoding=utf-8
 # License: GPLv3 Copyright: 2019, Kovid Goyal <kovid at kovidgoyal.net>
 
-import subprocess
 
 from .constants import is_macos, logo_png_file
 
@@ -23,9 +22,15 @@ if is_macos:
 
 else:
 
-    # libnotify depends on GTK, so we are not using it, instead
-    # use the command line notify-send wrapper it provides
-    # May want to just implement this in glfw using DBUS
+    from .fast_data_types import dbus_send_notification
+
+    alloc_map = {}
+    identifier_map = {}
+
+    def dbus_notification_created(alloc_id, notification_id):
+        identifier = alloc_map.get(alloc_id)
+        if identifier is not None:
+            identifier_map[identifier] = notification_id
 
     def notify(
         title,
@@ -35,16 +40,8 @@ else:
         icon=True,
         identifier=None
     ):
-        cmd = ['notify-send', '-a', application]
-        if timeout > -1:
-            cmd.append('-t'), cmd.append(str(timeout))
         if icon is True:
             icon = logo_png_file
-        if icon:
-            cmd.extend(['-i', icon])
-        subprocess.Popen(
-            cmd + [title, body],
-            stdout=subprocess.DEVNULL,
-            stderr=subprocess.DEVNULL,
-            stdin=subprocess.DEVNULL,
-        )
+        alloc_id = dbus_send_notification(application, icon, title, body, timeout)
+        if alloc_id and identifier is not None:
+            alloc_map[alloc_id] = identifier