# Source code for enaml.widgets.bounded_time

    #------------------------------------------------------------------------------
    # Copyright (c) 2013-2025, Nucleic Development Team.
    #
    # Distributed under the terms of the Modified BSD License.
    #
    # The full license is in the file LICENSE, distributed with this software.
    #------------------------------------------------------------------------------
    from datetime import datetime, time as pytime

    from atom.api import Typed, ForwardTyped

    from enaml.core.declarative import d_, observe

    from .control import Control, ProxyControl

    class ProxyBoundedTime(ProxyControl):
        """ The abstract defintion of a proxy BoundedTime object.

        """
        #: A reference to the BoundedTime declaration.
        declaration = ForwardTyped(lambda: BoundedTime)

        def set_minimum(self, minimum):
            raise NotImplementedError

        def set_maximum(self, maximum):
            raise NotImplementedError

        def set_time(self, time):
            raise NotImplementedError

    class BoundedTime(Control):
        """ A base class for use with widgets that edit a Python
        datetime.time object bounded between minimum and maximum
        values. This class is not meant to be used directly.

        """
        #: The minimum time available in the datetime edit. The default value
        #: is midnight.
        minimum = d_(Typed(pytime, args=(0, 0, 0)))

        #: The maximum time available in the datetime edit. The default is
        #: one second before midnight.
        maximum = d_(Typed(pytime, args=(23, 59, 59, 999000)))

        #: The currently selected time. Default is datetime.now().time().
        #: The value is clipped between :attr:`minimum` and :attr:`maximum`.
        time = d_(Typed(pytime, factory=lambda: datetime.now().time()))

        #: A reference to the ProxyBoundedTime object.
        proxy = Typed(ProxyBoundedTime)

        #--------------------------------------------------------------------------
        # Observers
        #--------------------------------------------------------------------------
        @observe('minimum', 'maximum', 'time')
        def _update_proxy(self, change):
            """ An observer which updates the proxy when the data changes.

            """
            # The superclass implementation is sufficient.
            super(BoundedTime, self)._update_proxy(change)

        #--------------------------------------------------------------------------
        # Post Setattr Handlers
        #--------------------------------------------------------------------------
        def _post_setattr_minimum(self, old, new):
            """ Post setattr the minimum time.

            If the new minimum is greater than the current value or the
            maximum, those values are adjusted up.

            """
            if new > self.maximum:
                self.maximum = new
            if new > self.time:
                self.time = new

        def _post_setattr_maximum(self, old, new):
            """ Post setattr the maximum time.

            If the new maximum is less than the current value or the
            minimum, those values are adjusted down.

            """
            if new < self.minimum:
                self.minimum = new
            if new < self.time:
                self.time = new

        #--------------------------------------------------------------------------
        # Post Validate Handlers
        #--------------------------------------------------------------------------
        def _post_validate_time(self, old, new):
            """ Post validate the time for the control.

            If it lies outside of minimum and maximum bounds, it will be
            clipped to the bounds.

            """
            return max(self.minimum, min(new, self.maximum))