core.desktop: make dependency python-gobject optional

i3pystatus/core/desktop.py

@@ -1,22 +1,27 @@
 
-from gi.repository import Notify
+try:
+    from gi.repository import Notify
+except ImportError:
+    def display_notification(title, body, icon, urgency, timeout):
+        pass
+else:
+    if not Notify.init("i3pystatus"):
+        raise ImportError("Couldn't initialize libnotify")
 
-if not Notify.init("i3pystatus"):
-    raise ImportError("Couldn't initialize libnotify")
+    URGENCY_LUT = (
+        Notify.Urgency.LOW,
+        Notify.Urgency.NORMAL,
+        Notify.Urgency.CRITICAL,
+    )
 
-URGENCY_LUT = (
-    Notify.Urgency.LOW,
-    Notify.Urgency.NORMAL,
-    Notify.Urgency.CRITICAL,
-)
+    # List of some useful icon names:
+    # battery, battery-caution, battery-low
+    # …
 
-# List of some useful icon names:
-# battery, battery-caution, battery-low
-# …
+    def display_notification(title, body, icon="dialog-information", urgency=1, timeout=0):
+        notification = Notify.Notification.new(title, body, icon)
+        if timeout:
+            notification.set_timeout(timeout)
+        notification.set_urgency(URGENCY_LUT[urgency])
+        return notification.show()
 
-def display_notification(title, body, icon="dialog-information", urgency=1, timeout=0):
-    notification = Notify.Notification.new(title, body, icon)
-    if timeout:
-        notification.set_timeout(timeout)
-    notification.set_urgency(URGENCY_LUT[urgency])
-    return notification.show()