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 

    13 __docformat__ = 'restructuredtext'

    14 

    15 

    16 # import standard library

    17 

    18 # import interfaces

    19 from pyams_content.component.theme.interfaces import IThemesInfo

    20 from pyams_content.shared.view.interfaces import IViewThemesSettings, IWfView, VIEW_THEMES_SETTINGS_KEY

    21 from zope.annotation.interfaces import IAnnotations

    22 

    23 # import packages

    24 from persistent import Persistent

    25 from pyams_utils.adapter import adapter_config

    26 from pyramid.threadlocal import get_current_registry

    27 from zope.container.contained import Contained

    28 from zope.interface import implementer

    29 from zope.lifecycleevent import ObjectCreatedEvent

    30 from zope.location import locate

    31 from zope.schema.fieldproperty import FieldProperty

    32 

    33 

    34 @implementer(IViewThemesSettings)

    35 class ViewThemesSettings(Persistent, Contained):

    36     """View themes settings"""

    37 

    38     select_context_themes = FieldProperty(IViewThemesSettings['select_context_themes'])

    39     themes = FieldProperty(IViewThemesSettings['themes'])

    40 

    41     def get_themes(self, context):

    42         themes = set()

    43         if self.select_context_themes:

    44             themes_info = IThemesInfo(context, None)

    45             if themes_info is not None:

    46                 themes |= set(themes_info.themes or ())

    47         if self.themes:

    48             themes |= set(self.themes)

    49         return themes

    50 

    51     def get_themes_index(self, context):

    52         return [theme.label for theme in self.get_themes(context)]

    53 

    54 

    55 @adapter_config(context=IWfView, provides=IViewThemesSettings)

    56 def ViewThemesSettingsFactory(view):

    57     """View themes settings factory"""

    58     annotations = IAnnotations(view)

    59     settings = annotations.get(VIEW_THEMES_SETTINGS_KEY)

    60     if settings is None:

    61         settings = annotations[VIEW_THEMES_SETTINGS_KEY] = ViewThemesSettings()

    62         get_current_registry().notify(ObjectCreatedEvent(settings))

    63         locate(settings, view, '++view:themes++')

    64     return settings