File: widget.py

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#------------------------------------------------------------------------------
#
#  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: Enthought, Inc.
#
#------------------------------------------------------------------------------

""" Enthought pyface package component
"""

# Enthought library imports.
from traits.api import Any, Bool, HasTraits, provides

# Local imports.
from pyface.i_widget import IWidget, MWidget


@provides(IWidget)
class Widget(MWidget, HasTraits):
    """ The toolkit specific implementation of a Widget.  See the IWidget
    interface for the API documentation.
    """

    # 'IWidget' interface ----------------------------------------------------

    #: The toolkit specific control that represents the widget.
    control = Any

    #: The control's optional parent control.
    parent = Any

    #: Whether or not the control is visible
    visible = Bool(True)

    #: Whether or not the control is enabled
    enabled = Bool(True)

    # ------------------------------------------------------------------------
    # 'IWidget' interface.
    # ------------------------------------------------------------------------

    def show(self, visible):
        """ Show or hide the widget.

        Parameter
        ---------
        visible : bool
            Visible should be ``True`` if the widget should be shown.
        """
        self.visible = visible
        if self.control is not None:
            self.control.Show(visible)

    def enable(self, enabled):
        """ Enable or disable the widget.

        Parameter
        ---------
        enabled : bool
            The enabled state to set the widget to.
        """
        self.enabled = enabled
        if self.control is not None:
            self.control.Enable(enabled)

    def destroy(self):
        if self.control is not None:
            self.control.Destroy()
            self.control = None