##############################################################################
#
# Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
#                    Jean-Paul Smets-Solanes <jp@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
##############################################################################

from Products.Formulator import Widget, Validator
from Products.Formulator.Field import ZMIField
from Products.Formulator.DummyField import fields

class ImageFieldWidget(Widget.TextWidget):
    """
        RelationStringField widget

        Works like a string field but includes one buttons

        - one search button which updates the field and sets a relation

        - creates object if not there

    """
    property_names = Widget.TextWidget.property_names + \
      ['image_display', 'image_format','image_resolution']

    image_display = fields.StringField('image_display',
                               title='Image Display',
                               description=(
        "The method to call to set the relation. Required."),
                               default='thumbnail',
                               required=1)

    image_format = fields.StringField('image_format',
                               title='Image Format',
                               description=(
        "The format in which the image should be converted to."),
                               default='',
                               required=0)

    image_resolution = fields.IntegerField('image_resolution',
                               title='Image Resolution',
                               description=(
        "The format in which the image should be converted to."),
                               default=75,
                               required=0)

    def render(self, field, key, value, REQUEST):
        """Render text input field.
        """
        image = field.get_value('default')
        display = field.get_value('image_display')
        format = field.get_value('image_format')
        resolution = field.get_value('image_resolution')
        html_string = """<img src="%s?display=%s&format=%s&resolution=%s" />""" % (image, display, format,resolution)
        return html_string

ImageFieldWidgetInstance = ImageFieldWidget()
ImageFieldValidatorInstance = Validator.StringValidator()

class ImageField(ZMIField):
    meta_type = "ImageField"

    widget = ImageFieldWidgetInstance
    validator = ImageFieldValidatorInstance


