#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2002-2006  Donald N. Allingham
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

# $Id$

"""
Filter rule to match citation data.
"""
#-------------------------------------------------------------------------
#
# Standard Python modules
#
#-------------------------------------------------------------------------
from ....const import GRAMPS_LOCALE as glocale
_ = glocale.translation.gettext

#-------------------------------------------------------------------------
#
# GRAMPS modules
#
#-------------------------------------------------------------------------
from .. import Rule
from ....datehandler import parser

#-------------------------------------------------------------------------
#
# HasCitation
#
#-------------------------------------------------------------------------
class HasCitation(Rule):
    """Rule that checks for a citations with a particular value"""

    labels      = [ _('Volume/Page:'), 
                    _('Date:'), 
                    _('Confidence level:')]
    name        = _('Citations matching parameters')
    category    = _('General filters')
    description = _("Matches citations with particular parameters")
    allow_regex = True

    def prepare(self, db):
        self.date = None
        try:
            if self.list[1]:
                self.date = parser.parse(self.list[1])
        except:
            pass

    def apply(self, dbase, citation):
        if not self.match_substring(0, citation.get_page()):
            return False

        if self.date:
            if not citation.get_date_object().match(self.date):
                return False
        
        if self.list[2]:
            if citation.get_confidence_level() < int(self.list[2]):
                return False

        return True
