"""Contains the BulletinBoard class."""
__all__ = ['BulletinBoard']
from direct.directnotify import DirectNotifyGlobal
from direct.showbase.MessengerGlobal import messenger
[docs]class BulletinBoard:
"""This class implements a global location for key/value pairs to be
stored. Intended to prevent coders from putting global variables directly
on showbase, so that potential name collisions can be more easily
detected."""
notify = DirectNotifyGlobal.directNotify.newCategory('BulletinBoard')
[docs] def __init__(self):
self._dict = {}
[docs] def get(self, postName, default=None):
return self._dict.get(postName, default)
[docs] def has(self, postName):
return postName in self._dict
[docs] def getEvent(self, postName):
return 'bboard-%s' % postName
[docs] def getRemoveEvent(self, postName):
return 'bboard-remove-%s' % postName
[docs] def post(self, postName, value=None):
if postName in self._dict:
BulletinBoard.notify.warning('changing %s from %s to %s' % (
postName, self._dict[postName], value))
self.update(postName, value)
[docs] def update(self, postName, value):
"""can use this to set value the first time"""
if postName in self._dict:
BulletinBoard.notify.info('update: posting %s' % (postName))
self._dict[postName] = value
messenger.send(self.getEvent(postName))
[docs] def remove(self, postName):
if postName in self._dict:
del self._dict[postName]
messenger.send(self.getRemoveEvent(postName))
[docs] def removeIfEqual(self, postName, value):
# only remove the post if its value is a particular value
if self.has(postName):
if self.get(postName) == value:
self.remove(postName)
def __repr__(self):
str = 'Bulletin Board Contents\n'
str += '======================='
keys = list(self._dict.keys())
keys.sort()
for postName in keys:
str += '\n%s: %s' % (postName, self._dict[postName])
return str
