#------------------------------------------------------------------------------
# Copyright (c) 2006, Enthought, Inc.
# All rights reserved.
# 
# This software is provided without warranty under the terms of the BSD
# license included in enthought/LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license.  The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
# Thanks for using Enthought open source!
# 
# Author: Enthought, Inc.
# Description: <Enthought pyface package component>
#------------------------------------------------------------------------------

# local imports
from checkbox_image_renderer import CheckboxImageRenderer
from grid_cell_renderer import GridCellRenderer

class CheckboxRenderer(GridCellRenderer):

    def __init__(self, **traits):

        # base-class constructor
        super(CheckboxRenderer, self).__init__(**traits)

        # initialize the renderer, if it hasn't already been initialized
        if self.renderer is None:
            self.renderer = CheckboxImageRenderer()

        return

    def on_left_click(self, grid, row, col):
        """ Toggles the value. """

        value = grid.model.get_cell_drag_value(row, col)

        try:
            grid.model.set_value(row, col, not value)
        except:
            pass

        return True

#### EOF ######################################################################