#------------------------------------------------------------------------------
#
#  Copyright (c) 2005, 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: David C. Morrill
#  Date:   10/21/2004
#
#------------------------------------------------------------------------------

""" Defines the various button editors for the wxPython user interface toolkit.
"""

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


from __future__ import absolute_import
import wx

from traits.api \
    import Str

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

from .editor \
    import Editor

#-------------------------------------------------------------------------
#  'SimpleEditor' class:
#-------------------------------------------------------------------------


class SimpleEditor(Editor):
    """ Simple style editor for a button.
    """

    #-------------------------------------------------------------------------
    #  Trait definitions:
    #-------------------------------------------------------------------------

    # The button label
    label = Str

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

    def init(self, parent):
        """ Finishes initializing the editor by creating the underlying toolkit
            widget.
        """
        label = self.factory.label or self.item.get_label(self.ui)
        self.control = wx.Button(parent, -1, self.string_value(label))
        self.sync_value(self.factory.label_value, 'label', 'from')
        wx.EVT_BUTTON(parent, self.control.GetId(), self.update_object)
        self.set_tooltip()

    #-------------------------------------------------------------------------
    #  Handles the 'label' trait being changed:
    #-------------------------------------------------------------------------

    def _label_changed(self, label):
        self.control.SetLabel(self.string_value(label))

    #-------------------------------------------------------------------------
    #  Handles the user clicking the button by setting the value on the object:
    #-------------------------------------------------------------------------

    def update_object(self, event):
        """ Handles the user clicking the button by setting the factory value
            on the object.
        """
        factory = self.factory
        self.value = factory.value

        # If there is an associated view, then display it:
        if factory.view is not None:
            self.object.edit_traits(view=factory.view,
                                    parent=self.control)

    #-------------------------------------------------------------------------
    #  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

    #-------------------------------------------------------------------------
    #  Disposes of the contents of an editor:
    #-------------------------------------------------------------------------

    def dispose(self):
        """ Disposes of the contents of an editor.
        """
        wx.EVT_BUTTON(self.control.GetParent(), self.control.GetId(), None)

        super(SimpleEditor, self).dispose()

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


class CustomEditor(SimpleEditor):
    """ Custom style editor for a button, which can contain an image.
    """

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

    def init(self, parent):
        """ Finishes initializing the editor by creating the underlying toolkit
            widget.
        """
        from pyface.image_button import ImageButton

        factory = self.factory
        if self.factory.label:
            label = self.factory.label
        else:
            label = self.item.get_label(self.ui)

        self._control = ImageButton(
            parent,
            label=self.string_value(label),
            image=factory.image,
            style=factory.style,
            orientation=factory.orientation,
            width_padding=factory.width_padding,
            height_padding=factory.height_padding
        )
        self.control = self._control.control
        self._control.on_trait_change(self.update_object, 'clicked',
                                      dispatch='ui')
        self.sync_value(self.factory.label_value, 'label', 'from')

        self.set_tooltip()

    #-------------------------------------------------------------------------
    #  Disposes of the contents of an editor:
    #-------------------------------------------------------------------------

    def dispose(self):
        """ Disposes of the contents of an editor.
        """
        self._control.on_trait_change(self.update_object, 'clicked',
                                      remove=True)

        super(CustomEditor, self).dispose()

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