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#-------------------------------------------------------------------------------
#
# Defines the ITemplateDataNameItem interface used by elements of a
# TemplateDataName.
#
# Written by: David C. Morrill
#
# Date: 07/27/2007
#
# (c) Copyright 2007 by Enthought, Inc.
#
#-------------------------------------------------------------------------------
""" Defines the ITemplateDataNameItem interface used by elements of a
TemplateDataName.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
from traits.api \
import Interface, Instance, List
from itemplate_data_context \
import ITemplateDataContext
from itemplate_choice \
import ITemplateChoice
#-------------------------------------------------------------------------------
# 'ITemplateDataNameItem' interface:
#-------------------------------------------------------------------------------
class ITemplateDataNameItem ( Interface ):
""" Defines the ITemplateDataNameItem interface used by elements of a
TemplateDataName.
The contents of the *input_data_context* and *output_data_context*
are assumed to be immutable. That is, no changes should occur to the
data contexts once they have been assigned to the
**ITemplateDataNameItem** traits.
However, new input contexts can be assigned, in which case a new
output context should be created and assigned to the output context
(once it has been fully populated).
Also, the *output_data_context* should be **None** if the
*input_data_context* value is **None** or the object cannot match any
values in the *input_data_context*.
"""
# The data context which this data name item should match against. This
# value must be read/write.
input_data_context = Instance( ITemplateDataContext )
# The data context containing the data values and/or contexts this data
# name item matches. This value must be read/write.
output_data_context = Instance( ITemplateDataContext )
# The ITemplateChoice instance representing the current settings of the
# data name item. This value must be read/write.
data_name_item_choice = Instance( ITemplateChoice )
# The alternative choices the user has for the data name item settings for
# the current input data context. The list may be empty, in which case the
# user cannot change the settings of the data name item. This value can be
# read only.
data_name_item_choices = List( ITemplateChoice )
|
