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# Source code for camelot.view.controls.editors.onetomanychoiceseditor

    #  ============================================================================
    #
    #  Copyright (C) 2007-2011 Conceptive Engineering bvba. All rights reserved.
    #  www.conceptive.be / project-camelot@conceptive.be
    #
    #  This file is part of the Camelot Library.
    #
    #  This file may be used under the terms of the GNU General Public
    #  License version 2.0 as published by the Free Software Foundation
    #  and appearing in the file license.txt included in the packaging of
    #  this file.  Please review this information to ensure GNU
    #  General Public Licensing requirements will be met.
    #
    #  If you are unsure which license is appropriate for your use, please
    #  visit www.python-camelot.com or contact project-camelot@conceptive.be
    #
    #  This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    #  WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    #
    #  For use of this library in commercial applications, please contact
    #  project-camelot@conceptive.be
    #
    #  ============================================================================
    from camelot.view.model_thread import post
    from choiceseditor import ChoicesEditor

    class OneToManyChoicesEditor(ChoicesEditor):

        def __init__(self,
                     parent,
                     target=None,
                     nullable=True,
                     field_name='onetomanychoices',
                     **kwargs):
            super(OneToManyChoicesEditor, self).__init__(parent, **kwargs)
            self.setObjectName( field_name )
            assert target!=None
            self._target = target
            self._nullable = nullable
            post(self.get_choices, self.set_choices)

        def get_choices(self):
            additional_choices = []
            if self._nullable:
                additional_choices = [(None, '')]
            return additional_choices + [(o, unicode(o)) for o in self._target.query.all()]

        def set_field_attributes(self, editable=True, **kwargs):
            """Makes sure choices are not reset when changing the
            field attributes"""
            self.setEnabled(editable!=False)

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