# (C) Copyright 2004-2021 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in 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!

""" Traits UI 'display only' image editor.
"""


from pyface.image_resource import ImageResource

from traitsui.ui_traits import convert_bitmap

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

from .editor import Editor

from .image_control import ImageControl

# -------------------------------------------------------------------------
#  '_ImageEditor' class:
# -------------------------------------------------------------------------


class _ImageEditor(Editor):
    """ Traits UI 'display only' image editor.
    """

    def init(self, parent):
        """ Finishes initializing the editor by creating the underlying toolkit
            widget.
        """
        image = self.factory.image
        if image is None:
            image = self.value

        self.control = ImageControl(parent, convert_bitmap(image), padding=0)

        self.set_tooltip()

    def update_editor(self):
        """ Updates the editor when the object trait changes externally to the
            editor.
        """
        if self.factory.image is None:
            value = self.value
            if isinstance(value, ImageResource):
                self.control.Bitmap(convert_bitmap(value))
