#
#  Copyright (c) 2014 Helmut Merz helmutm@cy55.de
#
#  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
#

"""
Basic classes for schemas, i.e. sets of fields that may be used for creating
editing forms or display views for objects.
"""

from zope.interface import implements

from cybertools.composer.base import Component, Element, Compound
from cybertools.composer.base import Template
from cybertools.composer.schema.interfaces import ISchema, IFormState
from cybertools.util.jeep import Jeep


class Schema(Template):

    implements(ISchema)

    name = u''
    labelWidth = 'auto'
    manager = None

    def __init__(self, *fields, **kw):
        name = kw.get('name', None)
        if name is not None:
            self.name = name
        manager = kw.get('manager', None)
        if manager is not None:
            self.manager = self.__parent__ = manager
        super(Schema, self).__init__()
        for f in fields:
            self.components.append(f)

    @property
    def fields(self):
        return self.getFields()

    def getFields(self):
        return self.components

    @property
    def __name__(self):
        return self.name

    def getManager(self):
        return self.manager


class FormState(object):

    implements(IFormState)

    def __init__(self, fieldInstances=[], changed=False, severity=0):
        self.fieldInstances = Jeep(fieldInstances)
        self.changed = changed
        self.severity = severity


class FormError(object):

    def __init__(self, title, description=None, severity=5):
        self.title = title
        self.description = description or title
        self.severity = severity

    def __str__(self):
        return self.title

    def __repr__(self):
        return "FormError('%s')" % self.title


formErrors = dict(
    required_missing=FormError(u'Missing data for required field',
        u'Please enter data for required field.'),
    invalid_number=FormError(u'Invalid number',
        u'Please enter a number, only digits allowed.'),
    invalid_datetime=FormError(u'Invalid date/time',
        u'Please enter a string denoting a valid date/time.'),
    invalid_email_address=FormError(u'Invalid E-Mail Address',
        u'Please enter a valid email address.'),
)