#------------------------------------------------------------------------------
# Copyright (c) 2007, Riverbank Computing Limited
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD license.
# However, when used with the GPL version of PyQt the additional terms
# described in the PyQt GPL exception also apply

#
# Author: Riverbank Computing Limited
#------------------------------------------------------------------------------

""" Defines the PyQt implementation of the editor used to wrap a non-Traits
based custom control.
"""

#-------------------------------------------------------------------------
#  Imports:
#-------------------------------------------------------------------------

from __future__ import absolute_import
from pyface.qt import QtGui

# FIXME: ToolkitEditorFactory is a proxy class defined here just for backward
# compatibility. The class has been moved to the
# traitsui.editors.custom_editor file.
from traitsui.editors.custom_editor \
    import ToolkitEditorFactory

from .editor \
    import Editor

#-------------------------------------------------------------------------
#  'CustomEditor' class:
#-------------------------------------------------------------------------


class CustomEditor(Editor):
    """ Wrapper for a custom editor control
    """
    #-------------------------------------------------------------------------
    #  Finishes initializing the editor by creating the underlying toolkit
    #  widget:
    #-------------------------------------------------------------------------

    def init(self, parent):
        """ Finishes initializing the editor by creating the underlying toolkit
            widget.
        """
        factory = self.factory.factory
        if factory is not None:
            self.control = factory(*((parent, self) + self.factory.args))
        if self.control is None:
            self.control = QtGui.QLabel(
                'An error occurred creating a custom editor.\n'
                'Please contact the developer.')
            self.control.setStyleSheet("background-color: red; color: white")
        self.set_tooltip()

    #-------------------------------------------------------------------------
    #  Updates the editor when the object trait changes external to the editor:
    #-------------------------------------------------------------------------

    def update_editor(self):
        """ Updates the editor when the object trait changes externally to the
            editor.
        """
        pass