General: Display a notification to show the user progress.

wal

@@ -13,10 +13,8 @@ import subprocess
 import sys
 
 
-__version__ = "0.1"
-
-
 # Internal variables.
+VERSION = "0.1"
 COLOR_COUNT = 16
 CACHE_DIR = pathlib.Path.home() / ".cache/wal/"
 
@@ -36,6 +34,12 @@ class ColorType(object):
     ]
 
 
+# pylint: disable=too-few-public-methods
+class Args(object):
+    """Store args."""
+    notify = True
+
+
 # ARGS {{{
 
 
@@ -58,7 +62,8 @@ def get_args():
                      help="External script to run after \"wal\".")
 
     arg.add_argument("-q", action="store_true",
-                     help="Quiet mode, don\"t print anything.")
+                     help="Quiet mode, don\"t print anything and \
+                           don't display notifications.")
 
     arg.add_argument("-r", action="store_true",
                      help="Reload current colorscheme.")
@@ -84,6 +89,7 @@ def process_args(args):
     # -q
     if args.q:
         sys.stdout = sys.stderr = open(os.devnull, "w")
+        Args.notify = False
 
     # -c
     if args.c:
@@ -96,7 +102,7 @@ def process_args(args):
 
     # -v
     if args.v:
-        print(f"wal {__version__}")
+        print(f"wal {VERSION}")
         exit(0)
 
     # -i
@@ -212,9 +218,11 @@ def get_colors(img):
 
     if cache_file.is_file():
         colors = read_file(cache_file)
+        print("colors: Found cached colorscheme.")
 
     else:
         print("colors: Generating a colorscheme...")
+        notify("wal: Generating a colorscheme...")
 
         # Generate the colors.
         colors = gen_colors(img)
@@ -223,7 +231,9 @@ def get_colors(img):
         # Cache the colorscheme.
         save_file("\n".join(colors), cache_file)
 
-    print("colors: Generated colorscheme")
+        print("colors: Generated colorscheme")
+        notify("wal: Generation complete.")
+
     return colors
 
 
@@ -400,11 +410,7 @@ def set_wallpaper(img):
         set_desktop_wallpaper(desktop, img)
 
     else:
-        if os.uname == "Darwin":
-            subprocess.Popen(["osascript", "-e", "\"tell application \"Finder\" to set \
-                               desktop picture to POSIX file\"" + img + "\""])
-
-        elif shutil.which("feh"):
+        if shutil.which("feh"):
             subprocess.Popen(["feh", "--bg-fill", img])
 
         elif shutil.which("nitrogen"):
@@ -557,6 +563,15 @@ def fix_escape(string):
     return bytes(string, "utf-8").decode("unicode_escape")
 
 
+def notify(msg):
+    """Send arguements to notify-send."""
+    if shutil.which("notify-send") and Args.notify:
+        subprocess.Popen(["notify-send", msg],
+                         stdout=subprocess.DEVNULL,
+                         stderr=subprocess.DEVNULL,
+                         preexec_fn=os.setpgrp)
+
+
 # }}}