1 #

     2 # Copyright (c) 2008-2015 Thierry Florac <tflorac AT ulthar.net>

     3 # All Rights Reserved.

     4 #

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

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

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

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

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

    10 # FOR A PARTICULAR PURPOSE.

    11 #

    12 from pyams_form.interfaces.form import IFormLayer

    13 from pyams_form.widget import widgettemplate_config

    14 

    15 __docformat__ = 'restructuredtext'

    16 

    17 

    18 # import standard library

    19 

    20 # import interfaces

    21 from z3c.form.interfaces import IDataConverter

    22 from zope.schema.interfaces import ITuple

    23 

    24 # import packages

    25 from pyams_utils.adapter import adapter_config

    26 from z3c.form.browser.widget import HTMLFormElement

    27 from z3c.form.converter import BaseDataConverter

    28 from z3c.form.widget import FieldWidget, Widget

    29 

    30 

    31 @widgettemplate_config(mode='input', template='templates/ordered-list-input.pt', layer=IFormLayer)

    32 @widgettemplate_config(mode='display', template='templates/ordered-list-display.pt', layer=IFormLayer)

    33 class OrderedPluginsWidget(HTMLFormElement, Widget):

    34     """Ordered plug-ins list widget"""

    35 

    36     def str_value(self):

    37         return ';'.join(self.value)

    38 

    39     def items(self):

    40         for name in self.value:

    41             yield self.context.get_plugin(name)

    42 

    43 

    44 def OrderedPluginsFieldWidget(field, request):

    45     return FieldWidget(field, OrderedPluginsWidget(request))

    46 

    47 

    48 @adapter_config(context=(ITuple, OrderedPluginsWidget), provides=IDataConverter)

    49 class OrderdedPluginsDataConverter(BaseDataConverter):

    50     """Ordered plugins data converter"""

    51 

    52     def toWidgetValue(self, value):

    53         return value

    54 

    55     def toFieldValue(self, value):

    56         return tuple(value.split(';'))