1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
# -*- Mode: Python; py-indent-offset: 4 -*-
# vim: tabstop=4 shiftwidth=4 expandtab
#
# Copyright (C) 2007-2009 Johan Dahlin <johan@gnome.org>
#
# module.py: dynamic module for introspected libraries.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA
from __future__ import absolute_import
import os
import gobject
from ._gi import \
Repository, \
FunctionInfo, \
RegisteredTypeInfo, \
EnumInfo, \
ObjectInfo, \
InterfaceInfo, \
ConstantInfo, \
StructInfo, \
Struct, \
Boxed, \
enum_add, \
flags_add
from .types import \
GObjectMeta, \
StructMeta, \
Function
repository = Repository.get_default()
def get_parent_for_object(object_info):
parent_object_info = object_info.get_parent()
if not parent_object_info:
return object
namespace = parent_object_info.get_namespace()
name = parent_object_info.get_name()
# Workaround for GObject.Object and GObject.InitiallyUnowned.
if namespace == 'GObject' and name == 'Object' or name == 'InitiallyUnowned':
return gobject.GObject
module = __import__('gi.repository.%s' % namespace, fromlist=[name])
return getattr(module, name)
def get_interfaces_for_object(object_info):
interfaces = []
for interface_info in object_info.get_interfaces():
namespace = interface_info.get_namespace()
name = interface_info.get_name()
module = __import__('gi.repository.%s' % namespace, fromlist=[name])
interfaces.append(getattr(module, name))
return interfaces
class DynamicModule(object):
def __init__(self, namespace):
self._namespace = namespace
def __getattr__(self, name):
info = repository.find_by_name(self._namespace, name)
if not info:
raise AttributeError("%r object has no attribute %r" % (
self.__class__.__name__, name))
if isinstance(info, EnumInfo):
g_type = info.get_g_type()
value = g_type.pytype
if value is None:
if g_type.is_a(gobject.TYPE_ENUM):
value = enum_add(g_type)
else:
value = flags_add(g_type)
value.__info__ = info
value.__module__ = info.get_namespace()
for value_info in info.get_values():
name = value_info.get_name().upper()
setattr(value, name, value(value_info.get_value()))
elif isinstance(info, RegisteredTypeInfo):
g_type = info.get_g_type()
# Check if there is already a Python wrapper.
if g_type != gobject.TYPE_NONE:
type_ = g_type.pytype
if type_ is not None:
self.__dict__[name] = type_
return type_
# Create a wrapper.
if isinstance(info, ObjectInfo):
parent = get_parent_for_object(info)
interfaces = tuple(interface for interface in get_interfaces_for_object(info)
if not issubclass(parent, interface))
bases = (parent,) + interfaces
metaclass = GObjectMeta
elif isinstance(info, InterfaceInfo):
bases = (gobject.GInterface,)
metaclass = GObjectMeta
elif isinstance(info, StructInfo):
if g_type.is_a(gobject.TYPE_BOXED):
bases = (Boxed,)
elif g_type.is_a(gobject.TYPE_POINTER) or g_type == gobject.TYPE_NONE:
bases = (Struct,)
else:
raise TypeError("unable to create a wrapper for %s.%s" % (info.get_namespace(), info.get_name()))
metaclass = StructMeta
else:
raise NotImplementedError(info)
name = info.get_name()
dict_ = {
'__info__': info,
'__module__': self._namespace,
'__gtype__': g_type
}
value = metaclass(name, bases, dict_)
# Register the new Python wrapper.
if g_type != gobject.TYPE_NONE:
g_type.pytype = value
elif isinstance(info, FunctionInfo):
value = Function(info)
elif isinstance(info, ConstantInfo):
value = info.get_value()
else:
raise NotImplementedError(info)
self.__dict__[name] = value
return value
def __repr__(self):
path = repository.get_typelib_path(self._namespace)
return "<DynamicModule %r from %r>" % (self._namespace, path)
class ModuleProxy(object):
def __init__(self, name, namespace, dynamic_module, overrides_module):
self.__name__ = name
self._namespace = namespace
self._dynamic_module = dynamic_module
self._overrides_module = overrides_module
def __getattr__(self, name):
attribute = getattr(self._overrides_module, name, None)
exports = getattr(self._overrides_module, '__all__', ())
if attribute is not None and attribute not in exports:
attribute = None
if attribute is None:
attribute = getattr(self._dynamic_module, name)
return attribute
def __str__(self):
return "<ModuleProxy %r>" % self.__name__
|