"""Basic connectors such as Ports and Handles."""

import functools
import warnings

from gaphas.constraint import LineConstraint, PositionConstraint
from gaphas.geometry import distance_line_point, distance_point_point
from gaphas.position import Position
from gaphas.solver import NORMAL
from gaphas.state import observed, reversible_property


def deprecated(message, since):
    def _deprecated(func):
        @functools.wraps(func)
        def wrapper(*args, **kwargs):
            warnings.warn(
                f"{func.__name__}: {message}", category=DeprecationWarning, stacklevel=2
            )
            return func(*args, **kwargs)

        return wrapper

    return _deprecated


class Handle:
    """Handles are used to support modifications of Items.

    If the handle is connected to an item, the ``connected_to``
    property should refer to the item. A ``disconnect`` handler should
    be provided that handles all disconnect behaviour (e.g. clean up
    constraints and ``connected_to``).

    Note for those of you that use the Pickle module to persist a
    canvas: The property ``disconnect`` should contain a callable
    object (with __call__() method), so the pickle handler can also
    pickle that. Pickle is not capable of pickling ``instancemethod``
    or ``function`` objects.
    """

    def __init__(self, pos=(0, 0), strength=NORMAL, connectable=False, movable=True):
        self._pos = Position(pos, strength)
        self._connectable = connectable
        self._movable = movable
        self._visible = True

    def _set_pos(self, pos):
        """
        Shortcut for ``handle.pos.pos = pos``

        >>> h = Handle((10, 10))
        >>> h.pos
        <Position object on (10, 10)>
        >>> h.pos = (20, 15)
        >>> h.pos
        <Position object on (20, 15)>
        """
        self._pos.pos = pos

    pos = property(lambda s: s._pos, _set_pos)

    @observed
    def _set_connectable(self, connectable):
        self._connectable = connectable

    connectable = reversible_property(lambda s: s._connectable, _set_connectable)

    @observed
    def _set_movable(self, movable):
        self._movable = movable

    movable = reversible_property(lambda s: s._movable, _set_movable)

    @observed
    def _set_visible(self, visible):
        self._visible = visible

    visible = reversible_property(lambda s: s._visible, _set_visible)

    def __str__(self):
        return f"<{self.__class__.__name__} object on ({self._pos.x}, {self._pos.y})>"

    __repr__ = __str__


class Port:
    """Port connectable part of an item.

    The Item's handle connects to a port.
    """

    def __init__(self):
        super().__init__()

        self._connectable = True

    @observed
    def _set_connectable(self, connectable):
        self._connectable = connectable

    connectable = reversible_property(lambda s: s._connectable, _set_connectable)

    def glue(self, pos):
        """Get glue point on the port and distance to the port."""
        raise NotImplementedError("Glue method not implemented")

    def constraint(self, canvas, item, handle, glue_item):
        """Create connection constraint between item's handle and glue item."""
        raise NotImplementedError("Constraint method not implemented")


class LinePort(Port):
    """Port defined as a line between two handles."""

    def __init__(self, start, end):
        super().__init__()

        self.start = start
        self.end = end

    def glue(self, pos):
        """Get glue point on the port and distance to the port.

        >>> p1, p2 = (0.0, 0.0), (100.0, 100.0)
        >>> port = LinePort(p1, p2)
        >>> port.glue((50, 50))
        ((50.0, 50.0), 0.0)
        >>> port.glue((0, 10))
        ((5.0, 5.0), 7.0710678118654755)
        """
        d, pl = distance_line_point(self.start, self.end, pos)
        return pl, d

    def constraint(self, canvas, item, handle, glue_item):
        """Create connection line constraint between item's handle and the
        port."""
        line = canvas.project(glue_item, self.start, self.end)
        point = canvas.project(item, handle.pos)
        return LineConstraint(line, point)


class PointPort(Port):
    """Port defined as a point."""

    def __init__(self, point):
        super().__init__()
        self.point = point

    def glue(self, pos):
        """Get glue point on the port and distance to the port.

        >>> h = Handle((10, 10))
        >>> port = PointPort(h.pos)
        >>> port.glue((10, 0))
        (<Position object on (10, 10)>, 10.0)
        """
        d = distance_point_point(self.point, pos)
        return self.point, d

    def constraint(self, canvas, item, handle, glue_item):
        """Return connection position constraint between item's handle and the
        port."""
        origin = canvas.project(glue_item, self.point)
        point = canvas.project(item, handle.pos)
        c = PositionConstraint(origin, point)
        return c  # PositionConstraint(origin, point)

@@ -48,42 +48,8 @@
 %22%22%0A%0A
-import functools%0Aimport warnings%0A%0A
 from
@@ -310,357 +310,8 @@
 y%0A%0A%0A
-def deprecated(message, since):%0A    def _deprecated(func):%0A        @functools.wraps(func)%0A        def wrapper(*args, **kwargs):%0A            warnings.warn(%0A                f%22%7Bfunc.__name__%7D: %7Bmessage%7D%22, category=DeprecationWarning, stacklevel=2%0A            )%0A            return func(*args, **kwargs)%0A%0A        return wrapper%0A%0A    return _deprecated%0A%0A%0A
 clas

Remove unused deprecated function