[config] Start refactoring by creating separate config class

Add a class that will hold all configuration and argument information
and serve as central repository for this kind of information.

bumblebee/config.py

@@ -0,0 +1,59 @@
+import os
+import argparse
+import textwrap
+
+import bumblebee.theme
+import bumblebee.module
+
+class Config(object):
+    def __init__(self, args):
+        self._raw = args
+        self._parser = self.parser()
+
+        if len(args) == 0:
+            self._parser.print_help()
+            self._parser.exit()
+
+        self._args = self._parser.parse_args(args)
+
+        if self._args.list == "modules":
+            self.print_modules()
+        if self._args.list == "themes":
+            self.print_themes()
+        if self._args.list:
+            self._parser.exit()
+
+    def parser(self):
+        parser = argparse.ArgumentParser(description="display system data in the i3bar")
+        parser.add_argument("-m", "--modules", nargs="+",
+            help="List of modules to load. The order of the list determines "
+            "their order in the i3bar (from left to right)",
+            default=[])
+        parser.add_argument("-l", "--list",
+            help="List: 'modules', 'themes' ",
+            choices = [ "modules", "themes" ],
+            default="modules")
+        parser.add_argument("-t", "--theme", help="Specify which theme to use for "
+            "drawing the modules",
+            default="default")
+
+        return parser
+
+    def print_themes(self):
+        print(textwrap.fill(", ".join(bumblebee.theme.themes()),
+            80, initial_indent = "    ", subsequent_indent = "    "
+        ))
+
+    def print_modules(self):
+        for m in bumblebee.module.modules():
+
+            print "    {}: ".format(m.name())
+            print textwrap.fill("Description: {}".format(m.description()),
+                80, initial_indent="        ", subsequent_indent="                     ")
+            print textwrap.fill("Usage      : {}".format(m.usage()),
+                80, initial_indent="        ", subsequent_indent="                     ")
+            print textwrap.fill("Notes      : {}".format(m.notes()),
+                80, initial_indent="        ", subsequent_indent="                     ")
+            print ""
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4