[modules/battery] Allow hiding of icons

Use the parameter battery.decorate=False to hide icons such as the AC
indicator and the charging symbol.

warning and critical states are still propagated.

fixes #401

bumblebee/input.py

@@ -53,7 +53,6 @@ def read_input(inp):
                 log.debug("failed to parse event: {}".format(e))
     log.debug("exiting click event processing")
     poll.unregister(sys.stdin.fileno())
-    poll.close()
     inp.has_event = True
     inp.clean_exit = True
 

bumblebee/modules/battery.py

@@ -7,6 +7,7 @@ Parameters:
     * battery.warning    : Warning threshold in % of remaining charge (defaults to 20)
     * battery.critical   : Critical threshold in % of remaining charge (defaults to 10)
     * battery.showdevice : If set to "true", add the device name to the widget (defaults to False)
+    * battery.decorate   : If set to "false", hides additional icons (charging, etc.) (defaults to True)
 """
 
 import os
@@ -102,6 +103,9 @@ class Module(bumblebee.engine.Module):
         elif capacity < int(self.parameter("warning", 20)):
             state.append("warning")
 
+        if bumblebee.util.asbool(self.parameter("decorate", True)) == False:
+            return state
+
         if widget.get("ac"):
             state.append("AC")
         else: