Source code for direct.showbase.BulletinBoardWatcher

"""Contains the BulletinBoardWatcher class."""

__all__ = ['BulletinBoardWatcher']

from direct.directnotify import DirectNotifyGlobal
from direct.showbase.PythonUtil import Functor, makeList
from direct.showbase import DirectObject

[docs]class BulletinBoardWatcher(DirectObject.DirectObject): """ This class allows you to wait for a set of posts to be made to (or removed from) the bulletin board, and gives you a notification when all posts have been made. Values of posts are not examined.""" notify = DirectNotifyGlobal.directNotify.newCategory('BulletinBoardWatcher')
[docs] def __init__(self, name, postNames, callback, removeNames=None): self.notify.debug('__init__: %s, %s, %s' % (name, postNames, callback)) if removeNames is None: removeNames = [] = name self.postNames = makeList(postNames) self.removeNames = makeList(removeNames) self.callback = callback self.waitingOn = set() for name in self.postNames: if not bboard.has(name): eventName = bboard.getEvent(name) self.waitingOn.add(eventName) self.acceptOnce(eventName, Functor(self._handleEvent, eventName)) for name in self.removeNames: if bboard.has(name): eventName = bboard.getRemoveEvent(name) self.waitingOn.add(eventName) self.acceptOnce(eventName, Functor(self._handleEvent, eventName)) self._checkDone()
[docs] def destroy(self): self.ignoreAll() if hasattr(self, 'callback'): del self.callback del self.waitingOn
[docs] def isDone(self): return len(self.waitingOn) == 0
def _checkDone(self): if self.isDone(): self.notify.debug('%s: done' % self.callback() self.destroy() def _handleEvent(self, eventName): self.notify.debug('%s: handlePost(%s)' % (, eventName)) assert eventName in self.waitingOn self.waitingOn.remove(eventName) self._checkDone()