some extended functionality

__init__.py

 import readchar
 import string
 
+DEBUG = False
 
 class BottomBar(object):
     FUNC_QUIT = 0
-    FUNC_BOOL = 1
-    FUNC_TEXT = 2
+    FUNC_INFO = 1
+    FUNC_BOOL = 2
+    FUNC_TEXT = 3
     #
     F_KEYS = {
         1: '\x1bOP',
     def add_entry(self, name, f_key, function, *args, **kwargs):
         if len(args) == 0:
             args = ("", )
-        # add bb arguments for later barentry creation
-        self.__bb_args__[name] = (args, kwargs)
         # store data for entry
         if function in [self.FUNC_BOOL]:
             self.__bb_data__[name] = False
         elif function in [self.FUNC_TEXT]:
             self.__bb_data__[name] = ""
+        elif function in [self.FUNC_INFO]:
+            self.__bb_data__[name] = kwargs.pop('infotext')
         # store function and name for key
         f_inp = self.F_KEYS.get(f_key)
         if f_inp is not None:
             self.__key_to_func__[f_inp] = function
             self.__key_to_name__[f_inp] = name
+        # add bb arguments for later barentry creation
+        self.__bb_args__[name] = (args, kwargs)
 
     def get_entry(self, name, default=None):
         return self.__bb_data__.get(name, default)
     def edit(self, data):
         if data in string.ascii_letters or data in string.digits or data in string.punctuation:
             self.__bb_data__[self.edit_active] += data
+        elif data == "\x7f":
+            self.__bb_data__[self.edit_active] = self.__bb_data__[self.edit_active][:-1]
         elif data == "\n":
             self.edit_active = None
+        elif DEBUG:
+            print("unused keystroke in edit method:", repr(data))
 
     def run(self):
         for name in self.__bb_args__:
             # Update bar content
             for name in self.__bb_data__:
                 data = self.__bb_data__[name]
-                if type(data) is type(True):
-                    data = "on" if data else "off"
-                if name != self.edit_active:
-                    if data == "":
-                        data = "-"
-                else:
-                    data += "#"
-                self.__bb_bar__[name].text = data
+                hotkey = [k for k, v in self.__key_to_name__.items() if v == name][0]
+                func = self.__key_to_func__[hotkey]
+                if func in [self.FUNC_BOOL, self.FUNC_TEXT]:
+                    if type(data) is type(True):
+                        data = "on" if data else "off"
+                    if name != self.edit_active:
+                        if data == "":
+                            data = "-"
+                    else:
+                        data += "\u2588"
+                    self.__bb_bar__[name].text = data
             # keystroke action
             data = readchar.readkey()
             if self.edit_active is not None:
                     name = self.__key_to_name__.get(data)
                     if self.__key_to_func__[data] is self.FUNC_QUIT:
                         break
+                    elif self.__key_to_func__[data] is self.FUNC_INFO:
+                        print(self.__bb_data__[name])
                     elif self.__key_to_func__[data] is self.FUNC_BOOL:
                         self.__bb_data__[name] = not self.__bb_data__[name]
                     elif self.__key_to_func__[data] is self.FUNC_TEXT:
                         self.edit_active = name
+                    elif DEBUG:
+                        print("unused keystroke in run method:", repr(data))