Fix update notifier for python3 and Gtk+3

Author: montagdude

src/sboui-systray.py

@@ -3,8 +3,14 @@
 # System tray notifier for sboui updates. Source code adapted from
 # salix-update-notifier by George Vlahavas (gapan).
 
-import gtk
 import sys
+if sys.version_info[0] < 3:
+    import gtk
+else:
+    import gi
+    # Note: see deprecation note near the bottom.
+    gi.require_version('Gtk', '3.0')
+    from gi.repository import Gtk as gtk
 
 def accept(data=None):
     sys.exit(0)
@@ -51,7 +57,12 @@ def on_left_click(event):
     accept()
 
 if __name__ == '__main__':
-    icon = gtk.status_icon_new_from_icon_name("sboui")
+    if sys.version_info[0] < 3:
+        icon = gtk.status_icon_new_from_icon_name("sboui")
+    else:
+        # Note: this is deprecated in Gtk+3 and removed in Gtk+4. Will
+        # eventually need to find a replacement.
+        icon = gtk.StatusIcon().new_from_icon_name("sboui")
     icon.set_tooltip_text('SBo updates are available')
     icon.connect('popup-menu', on_right_click)
     icon.connect('activate', on_left_click)

src/sboui-update-notifier.in

@@ -13,8 +13,12 @@ def sbo_updates_available():
                           stdout=subprocess.PIPE)
   retval = False
   for line in iter(proc.stdout.readline,''):
-    if line.find("upgradable SlackBuild") != -1:
-      if line.startswith("No"):
+    if sys.version_info[0] < 3:
+        dcdline = line
+    else:
+        dcdline = line.decode()
+    if dcdline.find("upgradable SlackBuild") != -1:
+      if dcdline.startswith("No"):
         break
       else:
         retval = True