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  #   9ˆl–ßi~”TÒ~êu@ŠãM\*bÑ¿Ù„au¿¿× ;G    9# -*- Mode: Python; py-indent-offset: 4 -*-
# pygobject - Python bindings for the GObject library
# Copyright (C) 2007 Johan Dahlin
#
#   gi/_propertyhelper.py: GObject property wrapper/helper
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, see <http://www.gnu.org/licenses/>.

import sys
import traceback

import gi._gi
_gobject = gi._gi._gobject

from ._constants import \
    TYPE_NONE, TYPE_INTERFACE, TYPE_CHAR, TYPE_UCHAR, \
    TYPE_BOOLEAN, TYPE_INT, TYPE_UINT, TYPE_LONG, \
    TYPE_ULONG, TYPE_INT64, TYPE_UINT64, TYPE_ENUM, TYPE_FLAGS, \
    TYPE_FLOAT, TYPE_DOUBLE, TYPE_STRING, \
    TYPE_POINTER, TYPE_BOXED, TYPE_PARAM, TYPE_OBJECT, \
    TYPE_PYOBJECT, TYPE_GTYPE, TYPE_STRV, TYPE_VARIANT

G_MAXFLOAT = _gobject.G_MAXFLOAT
G_MAXDOUBLE = _gobject.G_MAXDOUBLE
G_MININT = _gobject.G_MININT
G_MAXINT = _gobject.G_MAXINT
G_MAXUINT = _gobject.G_MAXUINT
G_MINLONG = _gobject.G_MINLONG
G_MAXLONG = _gobject.G_MAXLONG
G_MAXULONG = _gobject.G_MAXULONG

if sys.version_info >= (3, 0):
    _basestring = str
    _long = int
else:
    _basestring = basestring
    _long = long


class Property(object):
    """Creates a new Property which when used in conjunction with
    GObject subclass will create a Python property accessor for the
    GObject ParamSpec.

    :param callable getter:
        getter to get the value of the property
    :param callable setter:
        setter to set the value of the property
    :param type type:
        type of property
    :param default:
        default value, must match the property type.
    :param str nick:
        short description
    :param str blurb:
        long description
    :param GObject.ParamFlags flags:
        parameter flags
    :keyword minimum:
        minimum allowed value (int, float, long only)
    :keyword maximum:
        maximum allowed value (int, float, long only)

    .. code-block:: python

         class MyObject(GObject.Object):
             prop = GObject.Property(type=str)

         obj = MyObject()
         obj.prop = 'value'

         obj.prop  # now is 'value'

    The API is similar to the builtin :py:func:`property`:

    .. code-block:: python

        class AnotherObject(GObject.Object):
            value = 0

            @GObject.Property
            def prop(self):
                'Read only property.'
                return 1

            @GObject.Property(type=int)
            def propInt(self):
                'Read-write integer property.'
                return self.value

            @propInt.setter
            def propInt(self, value):
                self.value = value
    """
    _type_from_pytype_lookup = {
        # Put long_ first in case long_ and int are the same so int clobbers long_
        _long: TYPE_LONG,
        int: TYPE_INT,
        bool: TYPE_BOOLEAN,
        float: TYPE_DOUBLE,
        str: TYPE_STRING,
        object: TYPE_PYOBJECT,
    }

    _min_value_lookup = {
        TYPE_UINT: 0,
        TYPE_ULONG: 0,
        TYPE_UINT64: 0,
        # Remember that G_MINFLOAT and G_MINDOUBLE are something different.
        TYPE_FLOAT: -G_MAXFLOAT,
        TYPE_DOUBLE: -G_MAXDOUBLE,
        TYPE_INT: G_MININT,
        TYPE_LONG: G_MINLONG,
        TYPE_INT64: -2 ** 63,
    }

    _max_value_lookup = {
        TYPE_UINT: G_MAXUINT,
        TYPE_ULONG: G_MAXULONG,
        TYPE_INT64: 2 ** 63 - 1,
        TYPE_UINT64: 2 ** 64 - 1,
        TYPE_FLOAT: G_MAXFLOAT,
        TYPE_DOUBLE: G_MAXD