1 ### -*- coding: utf-8 -*- ####################################################

     2 ##############################################################################

     3 #

     4 # Copyright (c) 2012 Thierry Florac <tflorac AT ulthar.net>

     5 # All Rights Reserved.

     6 #

     7 # This software is subject to the provisions of the Zope Public License,

     8 # Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.

     9 # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED

    10 # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    11 # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

    12 # FOR A PARTICULAR PURPOSE.

    13 #

    14 ##############################################################################

    15 

    16 

    17 # import standard packages

    18 

    19 # import Zope3 interfaces

    20 from z3c.form.interfaces import IWidget, IFieldWidget, ITextWidget, IFormLayer

    21 

    22 # import local interfaces

    23 from ztfy.utils.schema import ITextLineListField

    24 

    25 # import Zope3 packages

    26 from z3c.form.browser.text import TextWidget

    27 from z3c.form.converter import SequenceDataConverter

    28 from z3c.form.widget import FieldWidget

    29 from zope.component import adapter, adapts

    30 from zope.interface import implementer, implementsOnly

    31 

    32 # import local packages

    33 from ztfy.jqueryui import jquery_multiselect

    34 

    35 

    36 class ITextLineListWidget(ITextWidget):

    37     """TextLineList widget interface"""

    38 

    39 

    40 class TextLineListDataConverter(SequenceDataConverter):

    41     """TextLineList field data converter"""

    42 

    43     adapts(ITextLineListField, IWidget)

    44 

    45     def toWidgetValue(self, value):

    46         if value is self.field.missing_value:

    47             return []

    48         return '|'.join(value)

    49 

    50     def toFieldValue(self, value):

    51         if not value:

    52             return self.field.missing_value

    53         return value.split('|')

    54 

    55 

    56 class TextLineListWidget(TextWidget):

    57     """TextLineList field widget"""

    58 

    59     implementsOnly(ITextLineListWidget)

    60 

    61     def render(self):

    62         jquery_multiselect.need()

    63         return super(TextLineListWidget, self).render()

    64 

    65 

    66 @adapter(ITextLineListField, IFormLayer)

    67 @implementer(IFieldWidget)

    68 def TextLineListFieldWidgetFactory(field, request):

    69     return FieldWidget(field, TextLineListWidget(request))