#-------------------------------------------------------------------------------
#
#  Copyright (c) 2008, 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: Bryce Hendrix
#  Date:   08/06/2008
#
#-------------------------------------------------------------------------------

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

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

from traitsui.wx.editor import Editor

from enable.savage.svg.backends.wx.renderer import Renderer as WxRenderer
from enable.savage.svg.backends.kiva.renderer import Renderer as KivaRenderer

from .kiva_render_panel import RenderPanel as KivaRenderPanel
from .wx_render_panel import RenderPanel as WxRenderPanel

#-------------------------------------------------------------------------------
#  'SVGEditor' class:
#-------------------------------------------------------------------------------

class SVGEditor(Editor):
    """ Traits UI 'display only' SVG editor.
    """

    scrollable = True

    #---------------------------------------------------------------------------
    #  Finishes initializing the editor by creating the underlying toolkit
    #  widget:
    #---------------------------------------------------------------------------

    def init(self, parent):
        """ Finishes initializing the editor by creating the underlying toolkit
            widget.
        """
        document = self.value

        # TODO: the document should not know about the renderer, this should
        # be an attribute of the editor

        if document.renderer == WxRenderer:
            self.control = WxRenderPanel(parent, document=document)
        else:
            self.control = KivaRenderPanel(parent, document=document)

    #---------------------------------------------------------------------------
    #  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.
        """
        if self.control.document != self.value:
            self.control.document = self.value
            self.control.Refresh()

