[themes] Add themeing framework

Add - again a very simplistic - method for themeing the output.
Essentially, the plan is to have JSON-formatted configuration files in
bumblebee/themes/ and have a separate class for querying the config
whenever the output needs to know about semantic formatting/coloring.

Note that the theme object is stored on a per-module basis. Right now,
that doesn't have any effect (except looking particularly wasteful), but
the idea is to be able to have different themes for different modules in
the future.

bumblebee/module.py

@@ -0,0 +1,9 @@
+
+class Module(object):
+    def __init__(self, theme):
+        self._theme = theme
+
+    def theme(self):
+        return self._theme
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/modules/time.py

@@ -1,6 +1,10 @@
 import datetime
+import bumblebee.module
+
+class Module(bumblebee.module.Module):
+    def __init__(self, theme):
+        super(Module, self).__init__(theme)
 
-class Module:
     def data(self):
         return datetime.datetime.now().strftime("%x %X")
 

bumblebee/output.py

@@ -0,0 +1,15 @@
+
+class Output(object):
+    def start(self):
+        pass
+
+    def add(self, obj):
+        pass
+
+    def get(self):
+        pass
+
+    def stop(self):
+        pass
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/outputs/i3.py

@@ -1,8 +1,10 @@
 import json
+import bumblebee.output
 
-class i3bar:
+class i3bar(bumblebee.output.Output):
     def __init__(self):
         self._data = []
+
     def start(self):
         return json.dumps({ "version": 1 }) + "["
 

bumblebee/themes.py

@@ -0,0 +1,6 @@
+
+class Theme:
+    def __init__(self, name):
+        pass
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4

bumblebee/themes/simple.json

@@ -0,0 +1,3 @@
+{
+
+}

i3bumblebee

@@ -4,6 +4,7 @@ import sys
 import time
 import argparse
 import importlib
+import bumblebee.themes
 import bumblebee.outputs.i3
 
 def print_module_list():
@@ -13,7 +14,8 @@ def print_module_list():
 def main():
     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)")
-    parser.add_argument("-l", "--list", action="store_true", help="List all available modules")
+    parser.add_argument("-l", "--list", action="store_true", help="List all available modules and themes")
+    parser.add_argument("-t", "--theme", help="Specify which theme to use for drawing the modulemoduless")
 
     args = parser.parse_args()
 
@@ -22,11 +24,12 @@ def main():
         sys.exit(0)
 
     modules = []
+    theme = bumblebee.themes.Theme(args.theme)
     for m in args.modules:
         # TODO: how to cleanly handle errors here?
         # (useful error messages)
         module = importlib.import_module("bumblebee.modules.%s" % m)
-        modules.append(getattr(module, "Module")())
+        modules.append(getattr(module, "Module")(theme))
 
     output = bumblebee.outputs.i3.i3bar()