#
#  Copyright (c) 2007 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
#

"""
Utility functions.

$Id$
"""

from zope import schema
from cybertools.composer.schema.schema import Schema
from cybertools.composer.schema.field import Field


fieldMapping = {
        schema.TextLine: ('text',),
        schema.ASCII: ('text',),
        schema.Text: ('textarea',),
        schema.Date: ('date',),
        schema.Int: ('number',),
        schema.Bool: ('checkbox',),
        schema.Choice: ('dropdown',),
}


def getSchemaFromInterface(ifc, manager):
    fields = []
    for fname in schema.getFieldNamesInOrder(ifc):
        field = ifc[fname]
        if field.__class__ in fieldMapping:
            info = fieldMapping[field.__class__]
            voc = getattr(field, 'vocabulary', ()) or getattr(field, 'vocabularyName', ())
            if voc:
                if isinstance(voc, str):
                    voc = vocabularies[voc]
                else:
                    voc = [(t.token, t.title or t.token) for t in voc]
            f = Field(field.getName(),
                    fieldType = info[0],
                    required=field.required,
                    default=field.default,
                    default_method=getattr(field, 'default_method', None),
                    vocabulary=voc,
                    title=field.title,
                    description=field.description)
            fields.append(f)
    return Schema(manager=manager, name=ifc.__name__, *fields)