from Globals import Persistent
from OFS.SimpleItem import SimpleItem
from zope.interface import implements
from zope.component import getUtility

from interfaces import IUser, IAffordanceManager

class User(Persistent, SimpleItem):
    """ Affordance class """

    implements(IUser)
    meta_type = "User"
    
    def __init__(self, id, title):
        self.id = id
        self.title = title
        self._persData = {}

    def getAffordanceData(self, persp, id):
        """ get affordance data from one perspective. id is affordance's id """
        ws = self._persData.get(persp, {})
        return ws.get(id, 0)

    def getPerspectives(self):
        return self._persData.keys()

    def getTitle(self):
        """ get title """
        rr = getattr(self, 'title', self.id)
        if not rr:
            return self.id
        return rr

    def savePerspective(self, req):
        """ save user's perspective data """
        am = getUtility(IAffordanceManager)
        pers = req.get('perspective')
        workset = self._persData.get(pers, {})
        for a in am.getAffordances():
            workset[a.id] = float(req.get(a.id))
        self._persData[pers] = workset
        self._p_changed = True
        return 0