a4dfb9b209
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2060 fd906abe-77d9-0310-91a1-e0d9ade77398
137 lines
3.8 KiB
Python
137 lines
3.8 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Schema fields and related classes.
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$Id$
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"""
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from zope.interface import implements
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from zope.component import adapts
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from zope import component
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from cybertools.composer.base import Component
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from cybertools.composer.schema.interfaces import IField, IFieldInstance
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from cybertools.composer.schema.interfaces import fieldTypes
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from cybertools.composer.schema.schema import formErrors
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from cybertools.util.format import toStr, toUnicode
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class Field(Component):
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implements(IField)
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required = False
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standardFieldName = None
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vocabulary = None
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defaultValue = None
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renderFactory = None
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def __init__(self, name, title=None, fieldType='textline', **kw):
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assert name
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self.__name__ = name
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title = title or u''
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self.fieldType = fieldType
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super(Field, self).__init__(title, __name__=name, **kw)
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self.title = title
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for k, v in kw.items():
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setattr(self, k, v)
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@property
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def name(self):
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return self.__name__
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def getTitleValue(self):
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return self.title or self.name
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def getVocabularyItems(self):
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voc = (self.vocabulary or '')
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if isinstance(voc, basestring):
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voc = voc.splitlines()
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return [dict(token=t, title=t) for t in voc if t.strip()]
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else:
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return [dict(token=t.token, title=t.title) for t in voc]
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def getFieldTypeInfo(self):
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return fieldTypes.getTerm(self.fieldType)
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def getFieldInstance(self):
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instanceName = self.getFieldTypeInfo().instanceName
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return component.getAdapter(self, IFieldInstance, name=instanceName)
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class FieldInstance(object):
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implements(IFieldInstance)
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adapts(IField)
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def __init__(self, context):
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self.context = context
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self.name = self.__name__ = context.name
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self.errors = []
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self.severity = 0
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self.change = None
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def marshall(self, value):
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return value
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#return toStr(value)
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def display(self, value):
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return value
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#return toStr(value)
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def unmarshall(self, value):
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return toUnicode(value) or u''
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def validate(self, value):
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if not value and self.context.required:
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self.setError('required_missing')
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def setError(self, errorName):
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error = formErrors[errorName]
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self.errors.append(error)
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self.severity = max(error.severity, self.severity)
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class NumberFieldInstance(FieldInstance):
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def marshall(self, value):
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if value is None:
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return ''
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return str(value)
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def display(self, value):
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if value is None:
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return '-'
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return str(value)
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def unmarshall(self, value):
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if not value:
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return None
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return int(value)
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def validate(self, value):
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if value in ('', None):
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if self.context.required:
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self.setError('required_missing')
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else:
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try:
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int(value)
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except (TypeError, ValueError):
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self.setError('invalid_number')
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