diff options
Diffstat (limited to 'gi/pygobject-object.c')
| -rw-r--r-- | gi/pygobject-object.c | 2551 |
1 files changed, 2551 insertions, 0 deletions
diff --git a/gi/pygobject-object.c b/gi/pygobject-object.c new file mode 100644 index 0000000..961f6dd --- /dev/null +++ b/gi/pygobject-object.c @@ -0,0 +1,2551 @@ +/* -*- Mode: C; c-basic-offset: 4 -*- + * pygtk- Python bindings for the GTK toolkit. + * Copyright (C) 1998-2003 James Henstridge + * + * pygobject.c: wrapper for the GObject type. + * + * 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/>. + */ + +#include <config.h> + +#include "pygobject-object.h" +#include "pyginterface.h" +#include "pygparamspec.h" +#include "pygi-type.h" +#include "pygboxed.h" +#include "gimodule.h" + +#include "pygi-util.h" +#include "pygi-value.h" +#include "pygi-type.h" +#include "pygi-property.h" +#include "pygi-signal-closure.h" +#include "pygi-basictype.h" + +extern PyObject *PyGIDeprecationWarning; + +static void pygobject_dealloc(PyGObject *self); +static int pygobject_traverse(PyGObject *self, visitproc visit, void *arg); +static PyObject * pyg_type_get_bases(GType gtype); +static inline int pygobject_clear(PyGObject *self); +static PyObject * pygobject_weak_ref_new(GObject *obj, PyObject *callback, PyObject *user_data); +static void pygobject_inherit_slots(PyTypeObject *type, PyObject *bases, + gboolean check_for_present); +static void pygobject_find_slot_for(PyTypeObject *type, PyObject *bases, int slot_offset, + gboolean check_for_present); +GType PY_TYPE_OBJECT = 0; +GQuark pygobject_custom_key; +GQuark pygobject_class_key; +GQuark pygobject_class_init_key; +GQuark pygobject_wrapper_key; +GQuark pygobject_has_updated_constructor_key; +GQuark pygobject_instance_data_key; + +/* PyPy doesn't support tp_dictoffset, so we have to work around it */ +#ifndef PYPY_VERSION +#define PYGI_OBJECT_USE_CUSTOM_DICT +#endif + +GClosure * +gclosure_from_pyfunc(PyGObject *object, PyObject *func) +{ + GSList *l; + PyGObjectData *inst_data; + inst_data = pyg_object_peek_inst_data(object->obj); + if (inst_data) { + for (l = inst_data->closures; l; l = l->next) { + PyGClosure *pyclosure = l->data; + int res = PyObject_RichCompareBool(pyclosure->callback, func, Py_EQ); + if (res == -1) { + PyErr_Clear(); /* Is there anything else to do? */ + } else if (res) { + return (GClosure*)pyclosure; + } + } + } + return NULL; +} + +/* Copied from glib. gobject uses hyphens in property names, but in Python + * we can only represent hyphens as underscores. Convert underscores to + * hyphens for glib compatibility. */ +static void +canonicalize_key (gchar *key) +{ + gchar *p; + + for (p = key; *p != 0; p++) + { + gchar c = *p; + + if (c != '-' && + (c < '0' || c > '9') && + (c < 'A' || c > 'Z') && + (c < 'a' || c > 'z')) + *p = '-'; + } +} + +/* -------------- class <-> wrapper manipulation --------------- */ + +static void +pygobject_data_free(PyGObjectData *data) +{ + /* This function may be called after the python interpreter has already + * been shut down. If this happens, we cannot do any python calls, so just + * free the memory. */ + PyGILState_STATE state = 0; + PyThreadState *_save = NULL; + gboolean state_saved; + GSList *closures, *tmp; + + state_saved = Py_IsInitialized(); + if (state_saved) { + state = PyGILState_Ensure(); + Py_DECREF(data->type); + /* We cannot use Py_BEGIN_ALLOW_THREADS here because this is inside + * a branch. */ + Py_UNBLOCK_THREADS; /* Modifies _save */ + } + + tmp = closures = data->closures; +#ifndef NDEBUG + data->closures = NULL; + data->type = NULL; +#endif + while (tmp) { + GClosure *closure = tmp->data; + + /* we get next item first, because the current link gets + * invalidated by pygobject_unwatch_closure */ + tmp = tmp->next; + g_closure_invalidate(closure); + } + + if (data->closures != NULL) + g_warning("invalidated all closures, but data->closures != NULL !"); + + g_free(data); + + if (state_saved && Py_IsInitialized ()) { + Py_BLOCK_THREADS; /* Restores _save */ + PyGILState_Release(state); + } +} + +static inline PyGObjectData * +pygobject_data_new(void) +{ + PyGObjectData *data; + data = g_new0(PyGObjectData, 1); + return data; +} + +static inline PyGObjectData * +pygobject_get_inst_data(PyGObject *self) +{ + PyGObjectData *inst_data; + + if (G_UNLIKELY(!self->obj)) + return NULL; + inst_data = g_object_get_qdata(self->obj, pygobject_instance_data_key); + if (inst_data == NULL) + { + inst_data = pygobject_data_new(); + + inst_data->type = Py_TYPE(self); + Py_INCREF((PyObject *) inst_data->type); + + g_object_set_qdata_full(self->obj, pygobject_instance_data_key, + inst_data, (GDestroyNotify) pygobject_data_free); + } + return inst_data; +} + + +PyTypeObject *PyGObject_MetaType = NULL; + +/** + * pygobject_sink: + * @obj: a GObject + * + * As Python handles reference counting for us, the "floating + * reference" code in GTK is not all that useful. In fact, it can + * cause leaks. This function should be called to remove the floating + * references on objects on construction. + **/ +void +pygobject_sink(GObject *obj) +{ + /* The default behaviour for GInitiallyUnowned subclasses is to call ref_sink(). + * - if the object is new and owned by someone else, its ref has been sunk and + * we need to keep the one from that someone and add our own "fresh ref" + * - if the object is not and owned by nobody, its ref is floating and we need + * to transform it into a regular ref. + */ + if (G_IS_INITIALLY_UNOWNED(obj)) { + g_object_ref_sink(obj); + } +} + +typedef struct { + PyObject_HEAD + GParamSpec **props; + guint n_props; + guint index; +} PyGPropsIter; + +PYGI_DEFINE_TYPE("gi._gi.GPropsIter", PyGPropsIter_Type, PyGPropsIter); + +static void +pyg_props_iter_dealloc(PyGPropsIter *self) +{ + g_free(self->props); + PyObject_Del((PyObject*) self); +} + +static PyObject* +pygobject_props_iter_next(PyGPropsIter *iter) +{ + if (iter->index < iter->n_props) + return pyg_param_spec_new(iter->props[iter->index++]); + else { + PyErr_SetNone(PyExc_StopIteration); + return NULL; + } +} + +typedef struct { + PyObject_HEAD + /* a reference to the object containing the properties */ + PyGObject *pygobject; + GType gtype; +} PyGProps; + +static void +PyGProps_dealloc(PyGProps* self) +{ + PyGObject *tmp; + + PyObject_GC_UnTrack((PyObject*)self); + + tmp = self->pygobject; + self->pygobject = NULL; + Py_XDECREF(tmp); + + PyObject_GC_Del((PyObject*)self); +} + +static PyObject* +build_parameter_list(GObjectClass *class) +{ + GParamSpec **props; + guint n_props = 0, i; + PyObject *prop_str; + PyObject *props_list; + + props = g_object_class_list_properties(class, &n_props); + props_list = PyList_New(n_props); + for (i = 0; i < n_props; i++) { + char *name; + name = g_strdup(g_param_spec_get_name(props[i])); + /* hyphens cannot belong in identifiers */ + g_strdelimit(name, "-", '_'); + prop_str = PyUnicode_FromString (name); + + PyList_SetItem(props_list, i, prop_str); + g_free(name); + } + + if (props) + g_free(props); + + return props_list; +} + +static PyObject* +PyGProps_getattro(PyGProps *self, PyObject *attr) +{ + char *attr_name, *property_name; + GObjectClass *class; + GParamSpec *pspec; + + attr_name = PyUnicode_AsUTF8 (attr); + if (!attr_name) { + PyErr_Clear(); + return PyObject_GenericGetAttr((PyObject *)self, attr); + } + + class = g_type_class_ref(self->gtype); + + /* g_object_class_find_property recurses through the class hierarchy, + * so the resulting pspec tells us the owner_type that owns the property + * we're dealing with. */ + property_name = g_strdup(attr_name); + canonicalize_key(property_name); + pspec = g_object_class_find_property(class, property_name); + g_free(property_name); + g_type_class_unref(class); + + if (!pspec) { + return PyObject_GenericGetAttr((PyObject *)self, attr); + } + + if (!self->pygobject) { + /* If we're doing it without an instance, return a GParamSpec */ + return pyg_param_spec_new(pspec); + } + + return pygi_get_property_value (self->pygobject, pspec); +} + +static gboolean +set_property_from_pspec(GObject *obj, + GParamSpec *pspec, + PyObject *pvalue) +{ + GValue value = { 0, }; + + if (pspec->flags & G_PARAM_CONSTRUCT_ONLY) { + PyErr_Format(PyExc_TypeError, + "property '%s' can only be set in constructor", + pspec->name); + return FALSE; + } + + if (!(pspec->flags & G_PARAM_WRITABLE)) { + PyErr_Format(PyExc_TypeError, + "property '%s' is not writable", pspec->name); + return FALSE; + } + + g_value_init(&value, G_PARAM_SPEC_VALUE_TYPE(pspec)); + if (pyg_param_gvalue_from_pyobject(&value, pvalue, pspec) < 0) { + PyObject *pvalue_str = PyObject_Repr(pvalue); + PyErr_Format(PyExc_TypeError, + "could not convert %s to type '%s' when setting property '%s.%s'", + PyUnicode_AsUTF8 (pvalue_str), + g_type_name(G_PARAM_SPEC_VALUE_TYPE(pspec)), + G_OBJECT_TYPE_NAME(obj), + pspec->name); + Py_DECREF(pvalue_str); + return FALSE; + } + + Py_BEGIN_ALLOW_THREADS; + g_object_set_property(obj, pspec->name, &value); + g_value_unset(&value); + Py_END_ALLOW_THREADS; + + return TRUE; +} + +PYGI_DEFINE_TYPE("gi._gi.GProps", PyGProps_Type, PyGProps); + +static int +PyGProps_setattro(PyGProps *self, PyObject *attr, PyObject *pvalue) +{ + GParamSpec *pspec; + char *attr_name, *property_name; + GObject *obj; + int ret = -1; + + if (pvalue == NULL) { + PyErr_SetString(PyExc_TypeError, "properties cannot be " + "deleted"); + return -1; + } + + attr_name = PyUnicode_AsUTF8 (attr); + if (!attr_name) { + PyErr_Clear(); + return PyObject_GenericSetAttr((PyObject *)self, attr, pvalue); + } + + if (!self->pygobject) { + PyErr_SetString(PyExc_TypeError, + "cannot set GOject properties without an instance"); + return -1; + } + + obj = self->pygobject->obj; + + property_name = g_strdup(attr_name); + canonicalize_key(property_name); + + /* g_object_class_find_property recurses through the class hierarchy, + * so the resulting pspec tells us the owner_type that owns the property + * we're dealing with. */ + pspec = g_object_class_find_property(G_OBJECT_GET_CLASS(obj), + property_name); + g_free(property_name); + if (!pspec) { + return PyObject_GenericSetAttr((PyObject *)self, attr, pvalue); + } + if (!pyg_gtype_is_custom (pspec->owner_type)) { + /* This GType is not implemented in Python: see if we can set the + * property via gi. */ + ret = pygi_set_property_value (self->pygobject, pspec, pvalue); + if (ret == 0) + return 0; + else if (ret == -1 && PyErr_Occurred()) + return -1; + } + + /* This GType is implemented in Python, or we failed to set it via gi: + * do a straightforward set. */ + if (!set_property_from_pspec(obj, pspec, pvalue)) + return -1; + + return 0; +} + +static int +pygobject_props_traverse(PyGProps *self, visitproc visit, void *arg) +{ + if (self->pygobject && visit((PyObject *) self->pygobject, arg) < 0) + return -1; + return 0; +} + +static PyObject* +pygobject_props_get_iter(PyGProps *self) +{ + PyGPropsIter *iter; + GObjectClass *class; + + iter = PyObject_NEW(PyGPropsIter, &PyGPropsIter_Type); + class = g_type_class_ref(self->gtype); + iter->props = g_object_class_list_properties(class, &iter->n_props); + iter->index = 0; + g_type_class_unref(class); + return (PyObject *) iter; +} + +static PyObject* +pygobject_props_dir(PyGProps *self) +{ + PyObject *ret; + GObjectClass *class; + + class = g_type_class_ref (self->gtype); + ret = build_parameter_list (class); + g_type_class_unref (class); + + return ret; +} + +static PyMethodDef pygobject_props_methods[] = { + { "__dir__", (PyCFunction)pygobject_props_dir, METH_NOARGS}, + { NULL, NULL, 0} +}; + + +static Py_ssize_t +PyGProps_length(PyGProps *self) +{ + GObjectClass *class; + GParamSpec **props; + guint n_props; + + class = g_type_class_ref(self->gtype); + props = g_object_class_list_properties(class, &n_props); + g_type_class_unref(class); + g_free(props); + + return (Py_ssize_t)n_props; +} + +static PySequenceMethods _PyGProps_as_sequence = { + (lenfunc) PyGProps_length, + 0, + 0, + 0, + 0, + 0, + 0 +}; + +PYGI_DEFINE_TYPE("gi._gi.GPropsDescr", PyGPropsDescr_Type, PyObject); + +static PyObject * +pyg_props_descr_descr_get(PyObject *self, PyObject *obj, PyObject *type) +{ + PyGProps *gprops; + + gprops = PyObject_GC_New(PyGProps, &PyGProps_Type); + if (obj == NULL || obj == Py_None) { + gprops->pygobject = NULL; + gprops->gtype = pyg_type_from_object(type); + } else { + if (!PyObject_IsInstance(obj, (PyObject *) &PyGObject_Type)) { + PyErr_SetString(PyExc_TypeError, "cannot use GObject property" + " descriptor on non-GObject instances"); + return NULL; + } + Py_INCREF(obj); + gprops->pygobject = (PyGObject *) obj; + gprops->gtype = pyg_type_from_object(obj); + } + return (PyObject *) gprops; +} + +/** + * pygobject_register_class: + * @dict: the module dictionary. A reference to the type will be stored here. + * @type_name: not used ? + * @gtype: the GType of the GObject subclass. + * @type: the Python type object for this wrapper. + * @static_bases: a tuple of Python type objects that are the bases of + * this type + * + * This function is used to register a Python type as the wrapper for + * a particular GObject subclass. It will also insert a reference to + * the wrapper class into the module dictionary passed as a reference, + * which simplifies initialisation. + */ +void +pygobject_register_class(PyObject *dict, const gchar *type_name, + GType gtype, PyTypeObject *type, + PyObject *static_bases) +{ + PyObject *o; + const char *class_name, *s; + PyObject *runtime_bases; + PyObject *bases_list, *bases, *mod_name; + int i; + + class_name = type->tp_name; + s = strrchr(class_name, '.'); + if (s != NULL) + class_name = s + 1; + + runtime_bases = pyg_type_get_bases(gtype); + if (static_bases) { + PyTypeObject *py_parent_type = (PyTypeObject *) PyTuple_GET_ITEM(static_bases, 0); + bases_list = PySequence_List(static_bases); + /* we start at index 1 because we want to skip the primary + * base, otherwise we might get MRO conflict */ + for (i = 1; i < PyTuple_GET_SIZE(runtime_bases); ++i) + { + PyObject *base = PyTuple_GET_ITEM(runtime_bases, i); + int contains = PySequence_Contains(bases_list, base); + if (contains < 0) + PyErr_Print(); + else if (!contains) { + if (!PySequence_Contains(py_parent_type->tp_mro, base)) { +#if 0 + g_message("Adding missing base %s to type %s", + ((PyTypeObject *)base)->tp_name, type->tp_name); +#endif + PyList_Append(bases_list, base); + } + } + } + bases = PySequence_Tuple(bases_list); + Py_DECREF(bases_list); + Py_DECREF(runtime_bases); + } else + bases = runtime_bases; + + Py_SET_TYPE(type, PyGObject_MetaType); + type->tp_bases = bases; + if (G_LIKELY(bases)) { + type->tp_base = (PyTypeObject *)PyTuple_GetItem(bases, 0); + Py_INCREF(type->tp_base); + } + + pygobject_inherit_slots(type, bases, TRUE); + + if (PyType_Ready(type) < 0) { + g_warning ("couldn't make the type `%s' ready", type->tp_name); + return; + } + + /* Set type.__module__ to the name of the module, + * otherwise it'll default to 'gobject', see #376099 + */ + s = strrchr(type->tp_name, '.'); + if (s != NULL) { + mod_name = PyUnicode_FromStringAndSize (type->tp_name, (int)(s - type->tp_name)); + PyDict_SetItemString(type->tp_dict, "__module__", mod_name); + Py_DECREF(mod_name); + } + + if (gtype) { + o = pyg_type_wrapper_new(gtype); + PyDict_SetItemString(type->tp_dict, "__gtype__", o); + Py_DECREF(o); + + /* stash a pointer to the python class with the GType */ + Py_INCREF(type); + g_type_set_qdata(gtype, pygobject_class_key, type); + } + + /* set up __doc__ descriptor on type */ + PyDict_SetItemString(type->tp_dict, "__doc__", + pyg_object_descr_doc_get()); + + PyDict_SetItemString(dict, (char *)class_name, (PyObject *)type); +} + +static void +pyg_toggle_notify (gpointer data, GObject *object, gboolean is_last_ref) +{ + PyGObject *self; + PyGILState_STATE state; + + state = PyGILState_Ensure(); + + /* Avoid thread safety problems by using qdata for wrapper retrieval + * instead of the user data argument. + * See: https://bugzilla.gnome.org/show_bug.cgi?id=709223 + */ + self = (PyGObject *)g_object_get_qdata (object, pygobject_wrapper_key); + if (self) { + if (is_last_ref) + Py_DECREF(self); + else + Py_INCREF(self); + } + + PyGILState_Release(state); +} + +static inline gboolean +pygobject_toggle_ref_is_required (PyGObject *self) +{ +#ifdef PYGI_OBJECT_USE_CUSTOM_DICT + return self->inst_dict != NULL; +#else + PyObject *dict; + gboolean result; + dict = PyObject_GetAttrString ((PyObject *)self, "__dict__"); + if (!dict) { + PyErr_Clear (); + return FALSE; + } + result = PyDict_Size (dict) != 0; + Py_DECREF (dict); + return result; +#endif +} + +static inline gboolean +pygobject_toggle_ref_is_active (PyGObject *self) +{ + return self->private_flags.flags & PYGOBJECT_USING_TOGGLE_REF; +} + + /* Called when the inst_dict is first created; switches the + reference counting strategy to start using toggle ref to keep the + wrapper alive while the GObject lives. In contrast, while + inst_dict was NULL the python wrapper is allowed to die at + will and is recreated on demand. */ +static inline void +pygobject_toggle_ref_ensure (PyGObject *self) +{ + if (pygobject_toggle_ref_is_active (self)) + return; + + if (!pygobject_toggle_ref_is_required (self)) + return; + + if (self->obj == NULL) + return; + + g_assert(self->obj->ref_count >= 1); + self->private_flags.flags |= PYGOBJECT_USING_TOGGLE_REF; + /* Note that add_toggle_ref will never immediately call back into + pyg_toggle_notify */ + Py_INCREF((PyObject *) self); + g_object_add_toggle_ref(self->obj, pyg_toggle_notify, NULL); + g_object_unref(self->obj); +} + +/* Called when an custom gobject is initalized via g_object_new instead of + its constructor. The next time the wrapper is access via + pygobject_new_full it will sink the floating reference instead of + adding a new reference and causing a leak */ + +void +pygobject_ref_float(PyGObject *self) +{ + /* should only be floated once */ + g_assert(!(self->private_flags.flags & PYGOBJECT_IS_FLOATING_REF)); + + self->private_flags.flags |= PYGOBJECT_IS_FLOATING_REF; +} + +/* Called by gobject_new_full, if the floating flag is set remove it, otherwise + ref the pyobject */ +void +pygobject_ref_sink(PyGObject *self) +{ + if (self->private_flags.flags & PYGOBJECT_IS_FLOATING_REF) + self->private_flags.flags &= ~PYGOBJECT_IS_FLOATING_REF; + else + Py_INCREF ( (PyObject *) self); +} + +/** + * pygobject_register_wrapper: + * @self: the wrapper instance + * + * In the constructor of PyGTK wrappers, this function should be + * called after setting the obj member. It will tie the wrapper + * instance to the GObject so that the same wrapper instance will + * always be used for this GObject instance. + */ +void +pygobject_register_wrapper(PyObject *self) +{ + PyGObject *gself; + + g_return_if_fail(self != NULL); + g_return_if_fail(PyObject_TypeCheck(self, &PyGObject_Type)); + + gself = (PyGObject *)self; + + g_assert(gself->obj->ref_count >= 1); + /* save wrapper pointer so we can access it later */ + g_object_set_qdata_full(gself->obj, pygobject_wrapper_key, gself, NULL); + + pygobject_toggle_ref_ensure (gself); +} + +static PyObject * +pyg_type_get_bases(GType gtype) +{ + GType *interfaces, parent_type, interface_type; + guint n_interfaces; + PyTypeObject *py_parent_type, *py_interface_type; + PyObject *bases; + guint i; + + if (G_UNLIKELY(gtype == G_TYPE_OBJECT)) + return NULL; + + /* Lookup the parent type */ + parent_type = g_type_parent(gtype); + py_parent_type = pygobject_lookup_class(parent_type); + interfaces = g_type_interfaces(gtype, &n_interfaces); + bases = PyTuple_New(n_interfaces + 1); + /* We will always put the parent at the first position in bases */ + Py_INCREF(py_parent_type); /* PyTuple_SetItem steals a reference */ + PyTuple_SetItem(bases, 0, (PyObject *) py_parent_type); + + /* And traverse interfaces */ + if (n_interfaces) { + for (i = 0; i < n_interfaces; i++) { + interface_type = interfaces[i]; + py_interface_type = pygobject_lookup_class(interface_type); + Py_INCREF(py_interface_type); /* PyTuple_SetItem steals a reference */ + PyTuple_SetItem(bases, i + 1, (PyObject *) py_interface_type); + } + } + g_free(interfaces); + return bases; +} + +/** + * pygobject_new_with_interfaces + * @gtype: the GType of the GObject subclass. + * + * Creates a new PyTypeObject from the given GType with interfaces attached in + * bases. + * + * Returns: a PyTypeObject for the new type or NULL if it couldn't be created + */ +static PyTypeObject * +pygobject_new_with_interfaces(GType gtype) +{ + PyGILState_STATE state; + PyObject *o; + PyTypeObject *type; + PyObject *dict; + PyTypeObject *py_parent_type; + PyObject *bases; + + state = PyGILState_Ensure(); + + bases = pyg_type_get_bases(gtype); + py_parent_type = (PyTypeObject *) PyTuple_GetItem(bases, 0); + + dict = PyDict_New(); + + o = pyg_type_wrapper_new(gtype); + PyDict_SetItemString(dict, "__gtype__", o); + Py_DECREF(o); + + /* set up __doc__ descriptor on type */ + PyDict_SetItemString(dict, "__doc__", pyg_object_descr_doc_get()); + + /* Something special to point out that it's not accessible through + * gi.repository */ + o = PyUnicode_FromString ("__gi__"); + PyDict_SetItemString (dict, "__module__", o); + Py_DECREF (o); + + type = (PyTypeObject*)PyObject_CallFunction((PyObject *) Py_TYPE(py_parent_type), + "sNN", g_type_name (gtype), bases, dict); + + if (type == NULL) { + PyErr_Print(); + PyGILState_Release(state); + return NULL; + } + + /* Workaround python tp_(get|set)attr slot inheritance bug. + * Fixes bug #144135. */ + if (!type->tp_getattr && py_parent_type->tp_getattr) { + type->tp_getattro = NULL; + type->tp_getattr = py_parent_type->tp_getattr; + } + if (!type->tp_setattr && py_parent_type->tp_setattr) { + type->tp_setattro = NULL; + type->tp_setattr = py_parent_type->tp_setattr; + } + /* override more python stupid hacks behind our back */ + type->tp_dealloc = py_parent_type->tp_dealloc; + type->tp_alloc = py_parent_type->tp_alloc; + type->tp_free = py_parent_type->tp_free; + type->tp_traverse = py_parent_type->tp_traverse; + type->tp_clear = py_parent_type->tp_clear; + + pygobject_inherit_slots(type, bases, FALSE); + + if (PyType_Ready(type) < 0) { + g_warning ("couldn't make the type `%s' ready", type->tp_name); + PyGILState_Release(state); + return NULL; + } + + /* stash a pointer to the python class with the GType */ + Py_INCREF(type); + g_type_set_qdata(gtype, pygobject_class_key, type); + + PyGILState_Release(state); + + return type; +} + +/* Pick appropriate value for given slot (at slot_offset inside + * PyTypeObject structure). It must be a pointer, e.g. a pointer to a + * function. We use the following heuristic: + * + * - Scan all types listed as bases of the type. + * - If for exactly one base type slot value is non-NULL and + * different from that of 'object' and 'GObject', set current type + * slot into that value. + * - Otherwise (if there is more than one such base type or none at + * all) don't touch it and live with Python default. + * + * The intention here is to propagate slot from custom wrappers to + * wrappers created at runtime when appropriate. We prefer to be on + * the safe side, so if there is potential collision (more than one + * custom slot value), we discard custom overrides altogether. + * + * When registering type with pygobject_register_class(), i.e. a type + * that has been manually created (likely with Codegen help), + * `check_for_present' should be set to TRUE. In this case, the + * function will never overwrite any non-NULL slots already present in + * the type. If `check_for_present' is FALSE, such non-NULL slots are + * though to be set by Python interpreter and so will be overwritten + * if heuristic above says so. + */ +static void +pygobject_inherit_slots(PyTypeObject *type, PyObject *bases, gboolean check_for_present) +{ + static int slot_offsets[] = { offsetof(PyTypeObject, tp_richcompare), + offsetof(PyTypeObject, tp_richcompare), + offsetof(PyTypeObject, tp_hash), + offsetof(PyTypeObject, tp_iter), + offsetof(PyTypeObject, tp_repr), + offsetof(PyTypeObject, tp_str), + }; + gsize i; + + /* Happens when registering gobject.GObject itself, at least. */ + if (!bases) + return; + + for (i = 0; i < G_N_ELEMENTS(slot_offsets); ++i) + pygobject_find_slot_for(type, bases, slot_offsets[i], check_for_present); +} + +static void +pygobject_find_slot_for(PyTypeObject *type, PyObject *bases, int slot_offset, + gboolean check_for_present) +{ +#define TYPE_SLOT(type) (* (void **) (void *) (((char *) (type)) + slot_offset)) + + void *found_slot = NULL; + Py_ssize_t num_bases = PyTuple_Size(bases); + Py_ssize_t i; + + if (check_for_present && TYPE_SLOT(type) != NULL) { + /* We are requested to check if there is any custom slot value + * in this type already and there actually is. Don't + * overwrite it. + */ + return; + } + + for (i = 0; i < num_bases; ++i) { + PyTypeObject *base_type = (PyTypeObject *) PyTuple_GetItem(bases, i); + void *slot = TYPE_SLOT(base_type); + + if (slot == NULL) + continue; + if (slot == TYPE_SLOT(&PyGObject_Type) || + slot == TYPE_SLOT(&PyBaseObject_Type)) + continue; + + if (found_slot != NULL && found_slot != slot) { + /* We have a conflict: more than one base use different + * custom slots. To be on the safe side, we bail out. + */ + return; + } + + found_slot = slot; + } + + /* Only perform the final assignment if at least one base has a + * custom value. Otherwise just leave this type's slot untouched. + */ + if (found_slot != NULL) + TYPE_SLOT(type) = found_slot; + +#undef TYPE_SLOT +} + +/** + * pygobject_lookup_class: + * @gtype: the GType of the GObject subclass. + * + * This function looks up the wrapper class used to represent + * instances of a GObject represented by @gtype. If no wrapper class + * or interface has been registered for the given GType, then a new + * type will be created. + * + * Does not set an exception when NULL is returned. + * + * Returns: The wrapper class for the GObject or NULL if the + * GType has no registered type and a new type couldn't be created + */ +PyTypeObject * +pygobject_lookup_class(GType gtype) +{ + PyTypeObject *py_type; + + if (gtype == G_TYPE_INTERFACE) + return &PyGInterface_Type; + + py_type = g_type_get_qdata(gtype, pygobject_class_key); + if (py_type == NULL) { + py_type = g_type_get_qdata(gtype, pyginterface_type_key); + + if (py_type == NULL) { + py_type = (PyTypeObject *)pygi_type_import_by_g_type(gtype); + PyErr_Clear (); + } + + if (py_type == NULL) { + py_type = pygobject_new_with_interfaces(gtype); + PyErr_Clear (); + g_type_set_qdata(gtype, pyginterface_type_key, py_type); + } + } + + return py_type; +} + +/** + * pygobject_new_full: + * @obj: a GObject instance. + * @steal: whether to steal a ref from the GObject or add (sink) a new one. + * @g_class: the GObjectClass + * + * This function gets a reference to a wrapper for the given GObject + * instance. If a wrapper has already been created, a new reference + * to that wrapper will be returned. Otherwise, a wrapper instance + * will be created. + * + * Returns: a reference to the wrapper for the GObject. + */ +PyObject * +pygobject_new_full(GObject *obj, gboolean steal, gpointer g_class) +{ + PyGObject *self; + + if (obj == NULL) { + Py_RETURN_NONE; + } + + /* If the GObject already has a PyObject wrapper stashed in its qdata, re-use it. + */ + self = (PyGObject *)g_object_get_qdata(obj, pygobject_wrapper_key); + if (self != NULL) { + /* Note the use of "pygobject_ref_sink" here only deals with PyObject + * wrapper ref counts and has nothing to do with GObject. + */ + pygobject_ref_sink(self); + + /* If steal is true, we also want to decref the incoming GObjects which + * already have a Python wrapper because the wrapper is already holding a + * strong reference. + */ + if (steal) + g_object_unref (obj); + + } else { + /* create wrapper */ + PyGObjectData *inst_data = pyg_object_peek_inst_data(obj); + PyTypeObject *tp; + if (inst_data) + tp = inst_data->type; + else { + if (g_class) + tp = pygobject_lookup_class(G_OBJECT_CLASS_TYPE(g_class)); + else + tp = pygobject_lookup_class(G_OBJECT_TYPE(obj)); + } + g_assert(tp != NULL); + + /* need to bump type refcount if created with + pygobject_new_with_interfaces(). fixes bug #141042 */ + if (tp->tp_flags & Py_TPFLAGS_HEAPTYPE) + Py_INCREF(tp); + self = PyObject_GC_New(PyGObject, tp); + if (self == NULL) + return NULL; + self->inst_dict = NULL; + self->weakreflist = NULL; + self->private_flags.flags = 0; + self->obj = obj; + + /* If we are not stealing a ref or the object is floating, + * add a regular ref or sink the object. */ + if (g_object_is_floating (obj)) + self->private_flags.flags |= PYGOBJECT_GOBJECT_WAS_FLOATING; + if (!steal || self->private_flags.flags & PYGOBJECT_GOBJECT_WAS_FLOATING) + g_object_ref_sink (obj); + + pygobject_register_wrapper((PyObject *)self); + PyObject_GC_Track((PyObject *)self); + } + + return (PyObject *)self; +} + + +PyObject * +pygobject_new(GObject *obj) +{ + return pygobject_new_full(obj, + /*steal=*/FALSE, + NULL); +} + +static void +pygobject_unwatch_closure(gpointer data, GClosure *closure) +{ + PyGObjectData *inst_data = data; + + /* Despite no Python API is called the list inst_data->closures + * must be protected by GIL as it is used by GC in + * pygobject_traverse */ + PyGILState_STATE state = PyGILState_Ensure(); + inst_data->closures = g_slist_remove (inst_data->closures, closure); + PyGILState_Release(state); +} + +/** + * pygobject_watch_closure: + * @self: a GObject wrapper instance + * @closure: a GClosure to watch + * + * Adds a closure to the list of watched closures for the wrapper. + * The closure must be one returned by pyg_closure_new(). When the + * cycle GC traverses the wrapper instance, it will enumerate the + * references to Python objects stored in watched closures. If the + * cycle GC tells the wrapper to clear itself, the watched closures + * will be invalidated. + */ +void +pygobject_watch_closure(PyObject *self, GClosure *closure) +{ + PyGObject *gself; + PyGObjectData *data; + + g_return_if_fail(self != NULL); + g_return_if_fail(PyObject_TypeCheck(self, &PyGObject_Type)); + g_return_if_fail(closure != NULL); + + gself = (PyGObject *)self; + data = pygobject_get_inst_data(gself); + g_return_if_fail(data != NULL); + g_return_if_fail(g_slist_find(data->closures, closure) == NULL); + data->closures = g_slist_prepend(data->closures, closure); + g_closure_add_invalidate_notifier(closure, data, pygobject_unwatch_closure); +} + + +/* -------------- PyGObject behaviour ----------------- */ + +PYGI_DEFINE_TYPE("gi._gi.GObject", PyGObject_Type, PyGObject); + +static void +pygobject_dealloc(PyGObject *self) +{ + /* Untrack must be done first. This is because followup calls such as + * ClearWeakRefs could call into Python and cause new allocations to + * happen, which could in turn could trigger the garbage collector, + * which would then get confused as it is tracking this half-deallocated + * object. */ + PyObject_GC_UnTrack((PyObject *)self); + + if (self->weakreflist != NULL) + PyObject_ClearWeakRefs((PyObject *)self); + + /* this forces inst_data->type to be updated, which could prove + * important if a new wrapper has to be created and it is of a + * unregistered type */ + pygobject_get_inst_data(self); + pygobject_clear(self); + /* the following causes problems with subclassed types */ + /* Py_TYPE(self)->tp_free((PyObject *)self); */ + PyObject_GC_Del(self); +} + +static PyObject* +pygobject_richcompare(PyObject *self, PyObject *other, int op) +{ + int isinst; + + isinst = PyObject_IsInstance(self, (PyObject*)&PyGObject_Type); + if (isinst == -1) + return NULL; + if (!isinst) { + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; + } + isinst = PyObject_IsInstance(other, (PyObject*)&PyGObject_Type); + if (isinst == -1) + return NULL; + if (!isinst) { + Py_INCREF(Py_NotImplemented); + return Py_NotImplemented; + } + + return pyg_ptr_richcompare(((PyGObject*)self)->obj, + ((PyGObject*)other)->obj, + op); +} + +static Py_hash_t +pygobject_hash(PyGObject *self) +{ + return (Py_hash_t)(gintptr)(self->obj); +} + +static PyObject * +pygobject_repr(PyGObject *self) +{ + PyObject *module, *repr; + gchar *module_str, *namespace; + + module = PyObject_GetAttrString ((PyObject *)self, "__module__"); + if (module == NULL) + return NULL; + + if (!PyUnicode_Check (module)) { + Py_DECREF (module); + return NULL; + } + + module_str = PyUnicode_AsUTF8 (module); + namespace = g_strrstr (module_str, "."); + if (namespace == NULL) { + namespace = module_str; + } else { + namespace += 1; + } + + repr = PyUnicode_FromFormat ("<%s.%s object at %p (%s at %p)>", + namespace, Py_TYPE (self)->tp_name, self, + self->obj ? G_OBJECT_TYPE_NAME (self->obj) : "uninitialized", + self->obj); + Py_DECREF (module); + return repr; +} + + +static int +pygobject_traverse(PyGObject *self, visitproc visit, void *arg) +{ + int ret = 0; + GSList *tmp; + PyGObjectData *data = pygobject_get_inst_data(self); + + if (self->inst_dict) ret = visit(self->inst_dict, arg); + if (ret != 0) return ret; + + /* Only let the GC track the closures when tp_clear() would free them. + * https://bugzilla.gnome.org/show_bug.cgi?id=731501 + */ + if (data && self->obj->ref_count == 1) { + for (tmp = data->closures; tmp != NULL; tmp = tmp->next) { + PyGClosure *closure = tmp->data; + + if (closure->callback) ret = visit(closure->callback, arg); + if (ret != 0) return ret; + + if (closure->extra_args) ret = visit(closure->extra_args, arg); + if (ret != 0) return ret; + + if (closure->swap_data) ret = visit(closure->swap_data, arg); + if (ret != 0) return ret; + } + } + return ret; +} + +static inline int +pygobject_clear(PyGObject *self) +{ + if (self->obj) { + g_object_set_qdata_full(self->obj, pygobject_wrapper_key, NULL, NULL); + if (pygobject_toggle_ref_is_active (self)) { + g_object_remove_toggle_ref(self->obj, pyg_toggle_notify, NULL); + self->private_flags.flags &= ~PYGOBJECT_USING_TOGGLE_REF; + } else { + Py_BEGIN_ALLOW_THREADS; + g_object_unref(self->obj); + Py_END_ALLOW_THREADS; + } + self->obj = NULL; + } + Py_CLEAR(self->inst_dict); + return 0; +} + +static void +pygobject_free(PyObject *op) +{ + PyObject_GC_Del(op); +} + +static gboolean +pygobject_prepare_construct_properties(GObjectClass *class, PyObject *kwargs, + guint *n_properties, const char **names[], const GValue **values) +{ + *n_properties = 0; + *names = NULL; + *values = NULL; + + if (kwargs) { + Py_ssize_t pos = 0; + PyObject *key; + PyObject *value; + Py_ssize_t len; + + len = PyDict_Size(kwargs); + *names = g_new(const char*, len); + *values = g_new0(GValue, len); + while (PyDict_Next(kwargs, &pos, &key, &value)) { + GParamSpec *pspec; + GValue *gvalue = &(*values)[*n_properties]; + + const gchar *key_str = PyUnicode_AsUTF8 (key); + + pspec = g_object_class_find_property(class, key_str); + if (!pspec) { + PyErr_Format(PyExc_TypeError, + "gobject `%s' doesn't support property `%s'", + G_OBJECT_CLASS_NAME(class), key_str); + return FALSE; + } + g_value_init(gvalue, G_PARAM_SPEC_VALUE_TYPE(pspec)); + if (pyg_param_gvalue_from_pyobject(gvalue, value, pspec) < 0) { + PyErr_Format(PyExc_TypeError, + "could not convert value for property `%s' from %s to %s", + key_str, Py_TYPE(value)->tp_name, + g_type_name(G_PARAM_SPEC_VALUE_TYPE(pspec))); + return FALSE; + } + (*names)[*n_properties] = g_strdup(key_str); + ++(*n_properties); + } + } + return TRUE; +} + +/* ---------------- PyGObject methods ----------------- */ + +static int +pygobject_init(PyGObject *self, PyObject *args, PyObject *kwargs) +{ + GType object_type; + guint n_properties = 0, i; + const GValue *values = NULL; + const char **names = NULL; + GObjectClass *class; + + /* Only do GObject creation and property setting if the GObject hasn't + * already been created. The case where self->obj already exists can occur + * when C constructors are called directly (Gtk.Button.new_with_label) + * and we are simply wrapping the result with a PyGObject. + * In these cases we want to ignore any keyword arguments passed along + * to __init__ and simply return. + * + * See: https://bugzilla.gnome.org/show_bug.cgi?id=705810 + */ + if (self->obj != NULL) + return 0; + + if (!PyArg_ParseTuple(args, ":GObject.__init__", NULL)) + return -1; + + object_type = pyg_type_from_object((PyObject *)self); + if (!object_type) + return -1; + + if (G_TYPE_IS_ABSTRACT(object_type)) { + PyErr_Format(PyExc_TypeError, "cannot create instance of abstract " + "(non-instantiable) type `%s'", g_type_name(object_type)); + return -1; + } + + if ((class = g_type_class_ref (object_type)) == NULL) { + PyErr_SetString(PyExc_TypeError, + "could not get a reference to type class"); + return -1; + } + + if (!pygobject_prepare_construct_properties (class, kwargs, &n_properties, &names, &values)) + goto cleanup; + + if (pygobject_constructv(self, n_properties, names, values)) + PyErr_SetString(PyExc_RuntimeError, "could not create object"); + + cleanup: + for (i = 0; i < n_properties; i++) { + g_free(names[i]); + g_value_unset(&values[i]); + } + g_free(names); + g_free(values); + + g_type_class_unref(class); + + return (self->obj) ? 0 : -1; +} + +#define CHECK_GOBJECT(self) \ + if (!G_IS_OBJECT(self->obj)) { \ + PyErr_Format(PyExc_TypeError, \ + "object at %p of type %s is not initialized", \ + self, Py_TYPE(self)->tp_name); \ + return NULL; \ + } + +static PyObject * +pygobject_get_property (PyGObject *self, PyObject *args) +{ + gchar *param_name; + + if (!PyArg_ParseTuple (args, "s:GObject.get_property", ¶m_name)) { + return NULL; + } + + CHECK_GOBJECT(self); + + return pygi_get_property_value_by_name (self, param_name); +} + +static PyObject * +pygobject_get_properties(PyGObject *self, PyObject *args) +{ + Py_ssize_t len, i; + PyObject *tuple; + + if ((len = PyTuple_Size(args)) < 1) { + PyErr_SetString(PyExc_TypeError, "requires at least one argument"); + return NULL; + } + + tuple = PyTuple_New(len); + for (i = 0; i < len; i++) { + PyObject *py_property = PyTuple_GetItem(args, i); + gchar *property_name; + PyObject *item; + + if (!PyUnicode_Check (py_property)) { + PyErr_SetString(PyExc_TypeError, + "Expected string argument for property."); + goto fail; + } + + property_name = PyUnicode_AsUTF8 (py_property); + item = pygi_get_property_value_by_name (self, property_name); + PyTuple_SetItem (tuple, i, item); + } + + return tuple; + +fail: + Py_DECREF (tuple); + return NULL; +} + +static PyObject * +pygobject_set_property(PyGObject *self, PyObject *args) +{ + gchar *param_name; + GParamSpec *pspec; + PyObject *pvalue; + int ret = -1; + + if (!PyArg_ParseTuple(args, "sO:GObject.set_property", ¶m_name, + &pvalue)) + return NULL; + + CHECK_GOBJECT(self); + + pspec = g_object_class_find_property(G_OBJECT_GET_CLASS(self->obj), + param_name); + if (!pspec) { + PyErr_Format(PyExc_TypeError, + "object of type `%s' does not have property `%s'", + g_type_name(G_OBJECT_TYPE(self->obj)), param_name); + return NULL; + } + + ret = pygi_set_property_value (self, pspec, pvalue); + if (ret == 0) + goto done; + else if (PyErr_Occurred()) + return NULL; + + if (!set_property_from_pspec(self->obj, pspec, pvalue)) + return NULL; + +done: + + Py_INCREF(Py_None); + return Py_None; +} + +static PyObject * +pygobject_set_properties(PyGObject *self, PyObject *args, PyObject *kwargs) +{ + GObjectClass *class; + Py_ssize_t pos; + PyObject *value; + PyObject *key; + PyObject *result = NULL; + + CHECK_GOBJECT(self); + + class = G_OBJECT_GET_CLASS(self->obj); + + g_object_freeze_notify (G_OBJECT(self->obj)); + pos = 0; + + while (kwargs && PyDict_Next (kwargs, &pos, &key, &value)) { + gchar *key_str = PyUnicode_AsUTF8 (key); + GParamSpec *pspec; + int ret = -1; + + pspec = g_object_class_find_property(class, key_str); + if (!pspec) { + gchar buf[512]; + + g_snprintf(buf, sizeof(buf), + "object `%s' doesn't support property `%s'", + g_type_name(G_OBJECT_TYPE(self->obj)), key_str); + PyErr_SetString(PyExc_TypeError, buf); + goto exit; + } + + ret = pygi_set_property_value (self, pspec, value); + if (ret != 0) { + /* Non-zero return code means that either an error occured ...*/ + if (PyErr_Occurred()) + goto exit; + + /* ... or the property couldn't be found , so let's try the default + * call. */ + if (!set_property_from_pspec(G_OBJECT(self->obj), pspec, value)) + goto exit; + } + } + + result = Py_None; + + exit: + g_object_thaw_notify (G_OBJECT(self->obj)); + Py_XINCREF(result); + return result; +} + +/* custom closure for gobject bindings */ +static void +pygbinding_closure_invalidate(gpointer data, GClosure *closure) +{ + PyGClosure *pc = (PyGClosure *)closure; + PyGILState_STATE state; + + state = PyGILState_Ensure(); + Py_XDECREF(pc->callback); + Py_XDECREF(pc->extra_args); + PyGILState_Release(state); + + pc->callback = NULL; + pc->extra_args = NULL; +} + +static void +pygbinding_marshal (GClosure *closure, + GValue *return_value, + guint n_param_values, + const GValue *param_values, + gpointer invocation_hint, + gpointer marshal_data) +{ + PyGILState_STATE state; + PyGClosure *pc = (PyGClosure *)closure; + PyObject *params, *ret; + GValue *out_value; + + state = PyGILState_Ensure(); + + /* construct Python tuple for the parameter values */ + params = PyTuple_New(2); + PyTuple_SetItem (params, 0, pyg_value_as_pyobject(¶m_values[0], FALSE)); + PyTuple_SetItem (params, 1, pyg_value_as_pyobject(¶m_values[1], FALSE)); + + /* params passed to function may have extra arguments */ + if (pc->extra_args) { + PyObject *tuple = params; + params = PySequence_Concat(tuple, pc->extra_args); + Py_DECREF(tuple); + } + ret = PyObject_CallObject(pc->callback, params); + if (!ret) { + PyErr_Print (); + goto out; + } else if (ret == Py_None) { + g_value_set_boolean (return_value, FALSE); + goto out; + } + + out_value = g_value_get_boxed (¶m_values[2]); + if (pyg_value_from_pyobject (out_value, ret) != 0) { + PyErr_SetString (PyExc_ValueError, "can't convert value"); + PyErr_Print (); + g_value_set_boolean (return_value, FALSE); + } else { + g_value_set_boolean (return_value, TRUE); + } + + Py_DECREF(ret); + +out: + Py_DECREF(params); + PyGILState_Release(state); +} + +static GClosure * +pygbinding_closure_new (PyObject *callback, PyObject *extra_args) +{ + GClosure *closure; + + g_return_val_if_fail(callback != NULL, NULL); + closure = g_closure_new_simple(sizeof(PyGClosure), NULL); + g_closure_add_invalidate_notifier(closure, NULL, pygbinding_closure_invalidate); + g_closure_set_marshal(closure, pygbinding_marshal); + Py_INCREF(callback); + ((PyGClosure *)closure)->callback = callback; + if (extra_args && extra_args != Py_None) { + Py_INCREF(extra_args); + if (!PyTuple_Check(extra_args)) { + PyObject *tmp = PyTuple_New(1); + PyTuple_SetItem(tmp, 0, extra_args); + extra_args = tmp; + } + ((PyGClosure *)closure)->extra_args = extra_args; + } + return closure; +} + +static PyObject * +pygobject_bind_property(PyGObject *self, PyObject *args) +{ + gchar *source_name, *target_name; + gchar *source_canon, *target_canon; + PyObject *target, *source_repr, *target_repr; + PyObject *transform_to, *transform_from, *user_data = NULL; + GBinding *binding; + GBindingFlags flags = G_BINDING_DEFAULT; + GClosure *to_closure = NULL, *from_closure = NULL; + + transform_from = NULL; + transform_to = NULL; + + if (!PyArg_ParseTuple(args, "sOs|iOOO:GObject.bind_property", + &source_name, &target, &target_name, &flags, + &transform_to, &transform_from, &user_data)) + return NULL; + + CHECK_GOBJECT(self); + if (!PyObject_TypeCheck(target, &PyGObject_Type)) { + PyErr_SetString(PyExc_TypeError, "Second argument must be a GObject"); + return NULL; + } + + if (transform_to && transform_to != Py_None) { + if (!PyCallable_Check (transform_to)) { + PyErr_SetString (PyExc_TypeError, + "transform_to must be callable or None"); + return NULL; + } + to_closure = pygbinding_closure_new (transform_to, user_data); + } + + if (transform_from && transform_from != Py_None) { + if (!PyCallable_Check (transform_from)) { + PyErr_SetString (PyExc_TypeError, + "transform_from must be callable or None"); + return NULL; + } + from_closure = pygbinding_closure_new (transform_from, user_data); + } + + /* Canonicalize underscores to hyphens. Note the results must be freed. */ + source_canon = g_strdelimit(g_strdup(source_name), "_", '-'); + target_canon = g_strdelimit(g_strdup(target_name), "_", '-'); + + binding = g_object_bind_property_with_closures (G_OBJECT(self->obj), source_canon, + pygobject_get(target), target_canon, + flags, to_closure, from_closure); + g_free(source_canon); + g_free(target_canon); + source_canon = target_canon = NULL; + + if (binding == NULL) { + source_repr = PyObject_Repr((PyObject*)self); + target_repr = PyObject_Repr(target); + PyErr_Format(PyExc_TypeError, "Cannot create binding from %s.%s to %s.%s", + PyUnicode_AsUTF8 (source_repr), source_name, + PyUnicode_AsUTF8 (target_repr), target_name); + Py_DECREF(source_repr); + Py_DECREF(target_repr); + return NULL; + } + + return pygobject_new (G_OBJECT (binding)); +} + +static PyObject * +connect_helper(PyGObject *self, gchar *name, PyObject *callback, PyObject *extra_args, PyObject *object, gboolean after) +{ + guint sigid; + GQuark detail = 0; + GClosure *closure = NULL; + gulong handlerid; + GSignalQuery query_info; + + if (!g_signal_parse_name(name, G_OBJECT_TYPE(self->obj), + &sigid, &detail, TRUE)) { + PyObject *repr = PyObject_Repr((PyObject*)self); + PyErr_Format(PyExc_TypeError, "%s: unknown signal name: %s", + PyUnicode_AsUTF8 (repr), + name); + Py_DECREF(repr); + return NULL; + } + + if (object && !PyObject_TypeCheck (object, &PyGObject_Type)) { + if (PyErr_WarnEx (PyGIDeprecationWarning, + "Using non GObject arguments for connect_object() is deprecated, use: " + "connect_data(signal, callback, data, connect_flags=GObject.ConnectFlags.SWAPPED)", + 1)) { + return NULL; + } + } + + g_signal_query (sigid, &query_info); + if (!pyg_gtype_is_custom (query_info.itype)) { + /* The signal is implemented by a non-Python class, probably + * something in the gi repository. */ + closure = pygi_signal_closure_new (self, query_info.itype, + query_info.signal_name, callback, + extra_args, object); + } + + if (!closure) { + /* The signal is either implemented at the Python level, or it comes + * from a foreign class that we don't have introspection data for. */ + closure = pyg_closure_new (callback, extra_args, object); + } + + pygobject_watch_closure((PyObject *)self, closure); + handlerid = g_signal_connect_closure_by_id(self->obj, sigid, detail, + closure, after); + return pygi_gulong_to_py (handlerid); +} + +static PyObject * +pygobject_connect(PyGObject *self, PyObject *args) +{ + PyObject *first, *callback, *extra_args, *ret; + gchar *name; + Py_ssize_t len; + + len = PyTuple_Size(args); + if (len < 2) { + PyErr_SetString(PyExc_TypeError, + "GObject.connect requires at least 2 arguments"); + return NULL; + } + first = PySequence_GetSlice(args, 0, 2); + if (!PyArg_ParseTuple(first, "sO:GObject.connect", &name, &callback)) { + Py_DECREF(first); + return NULL; + } + Py_DECREF(first); + if (!PyCallable_Check(callback)) { + PyErr_SetString(PyExc_TypeError, "second argument must be callable"); + return NULL; + } + + CHECK_GOBJECT(self); + + extra_args = PySequence_GetSlice(args, 2, len); + if (extra_args == NULL) + return NULL; + + ret = connect_helper(self, name, callback, extra_args, NULL, FALSE); + Py_DECREF(extra_args); + return ret; +} + +static PyObject * +pygobject_connect_after(PyGObject *self, PyObject *args) +{ + PyObject *first, *callback, *extra_args, *ret; + gchar *name; + Py_ssize_t len; + + len = PyTuple_Size(args); + if (len < 2) { + PyErr_SetString(PyExc_TypeError, + "GObject.connect_after requires at least 2 arguments"); + return NULL; + } + first = PySequence_GetSlice(args, 0, 2); + if (!PyArg_ParseTuple(first, "sO:GObject.connect_after", + &name, &callback)) { + Py_DECREF(first); + return NULL; + } + Py_DECREF(first); + if (!PyCallable_Check(callback)) { + PyErr_SetString(PyExc_TypeError, "second argument must be callable"); + return NULL; + } + + CHECK_GOBJECT(self); + + extra_args = PySequence_GetSlice(args, 2, len); + if (extra_args == NULL) + return NULL; + + ret = connect_helper(self, name, callback, extra_args, NULL, TRUE); + Py_DECREF(extra_args); + return ret; +} + +static PyObject * +pygobject_connect_object(PyGObject *self, PyObject *args) +{ + PyObject *first, *callback, *extra_args, *object, *ret; + gchar *name; + Py_ssize_t len; + + len = PyTuple_Size(args); + if (len < 3) { + PyErr_SetString(PyExc_TypeError, + "GObject.connect_object requires at least 3 arguments"); + return NULL; + } + first = PySequence_GetSlice(args, 0, 3); + if (!PyArg_ParseTuple(first, "sOO:GObject.connect_object", + &name, &callback, &object)) { + Py_DECREF(first); + return NULL; + } + Py_DECREF(first); + if (!PyCallable_Check(callback)) { + PyErr_SetString(PyExc_TypeError, "second argument must be callable"); + return NULL; + } + + CHECK_GOBJECT(self); + + extra_args = PySequence_GetSlice(args, 3, len); + if (extra_args == NULL) + return NULL; + + ret = connect_helper(self, name, callback, extra_args, object, FALSE); + Py_DECREF(extra_args); + return ret; +} + +static PyObject * +pygobject_connect_object_after(PyGObject *self, PyObject *args) +{ + PyObject *first, *callback, *extra_args, *object, *ret; + gchar *name; + Py_ssize_t len; + + len = PyTuple_Size(args); + if (len < 3) { + PyErr_SetString(PyExc_TypeError, + "GObject.connect_object_after requires at least 3 arguments"); + return NULL; + } + first = PySequence_GetSlice(args, 0, 3); + if (!PyArg_ParseTuple(first, "sOO:GObject.connect_object_after", + &name, &callback, &object)) { + Py_DECREF(first); + return NULL; + } + Py_DECREF(first); + if (!PyCallable_Check(callback)) { + PyErr_SetString(PyExc_TypeError, "second argument must be callable"); + return NULL; + } + + CHECK_GOBJECT(self); + + extra_args = PySequence_GetSlice(args, 3, len); + if (extra_args == NULL) + return NULL; + + ret = connect_helper(self, name, callback, extra_args, object, TRUE); + Py_DECREF(extra_args); + return ret; +} + +static PyObject * +pygobject_emit(PyGObject *self, PyObject *args) +{ + guint signal_id, i, j; + Py_ssize_t len; + GQuark detail; + PyObject *first, *py_ret, *repr = NULL; + gchar *name; + GSignalQuery query; + GValue *params, ret = { 0, }; + + len = PyTuple_Size(args); + if (len < 1) { + PyErr_SetString(PyExc_TypeError,"GObject.emit needs at least one arg"); + return NULL; + } + first = PySequence_GetSlice(args, 0, 1); + if (!PyArg_ParseTuple(first, "s:GObject.emit", &name)) { + Py_DECREF(first); + return NULL; + } + Py_DECREF(first); + + CHECK_GOBJECT(self); + + if (!g_signal_parse_name(name, G_OBJECT_TYPE(self->obj), + &signal_id, &detail, TRUE)) { + repr = PyObject_Repr((PyObject*)self); + PyErr_Format(PyExc_TypeError, "%s: unknown signal name: %s", + PyUnicode_AsUTF8 (repr), + name); + Py_DECREF(repr); + return NULL; + } + g_signal_query(signal_id, &query); + if ((gsize)len != query.n_params + 1) { + gchar buf[128]; + + g_snprintf(buf, sizeof(buf), + "%d parameters needed for signal %s; %ld given", + query.n_params, name, (long int) (len - 1)); + PyErr_SetString(PyExc_TypeError, buf); + return NULL; + } + + params = g_new0(GValue, query.n_params + 1); + g_value_init(¶ms[0], G_OBJECT_TYPE(self->obj)); + g_value_set_object(¶ms[0], G_OBJECT(self->obj)); + + for (i = 0; i < query.n_params; i++) + g_value_init(¶ms[i + 1], + query.param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE); + for (i = 0; i < query.n_params; i++) { + PyObject *item = PyTuple_GetItem(args, i+1); + + if (pyg_value_from_pyobject(¶ms[i+1], item) < 0) { + gchar buf[128]; + g_snprintf(buf, sizeof(buf), + "could not convert type %s to %s required for parameter %d", + Py_TYPE(item)->tp_name, + G_VALUE_TYPE_NAME(¶ms[i+1]), i); + PyErr_SetString(PyExc_TypeError, buf); + + for (j = 0; j <= i; j++) + g_value_unset(¶ms[j]); + + g_free(params); + return NULL; + } + } + + if (query.return_type != G_TYPE_NONE) + g_value_init(&ret, query.return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE); + + Py_BEGIN_ALLOW_THREADS; + g_signal_emitv(params, signal_id, detail, &ret); + Py_END_ALLOW_THREADS; + + for (i = 0; i < query.n_params + 1; i++) + g_value_unset(¶ms[i]); + + g_free(params); + if ((query.return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE) != G_TYPE_NONE) { + gboolean was_floating = FALSE; + + if (G_VALUE_HOLDS_OBJECT (&ret)) { + GObject *obj = g_value_get_object (&ret); + if (obj != NULL && G_IS_OBJECT(obj)) { + was_floating = g_object_is_floating (obj); + } + } + py_ret = pyg_value_as_pyobject(&ret, TRUE); + if (!was_floating) + g_value_unset(&ret); + } else { + Py_INCREF(Py_None); + py_ret = Py_None; + } + + return py_ret; +} + +static PyObject * +pygobject_chain_from_overridden(PyGObject *self, PyObject *args) +{ + GSignalInvocationHint *ihint; + guint signal_id, i; + Py_ssize_t len; + PyObject *py_ret; + const gchar *name; + GSignalQuery query; + GValue *params, ret = { 0, }; + + CHECK_GOBJECT(self); + + ihint = g_signal_get_invocation_hint(self->obj); + if (!ihint) { + PyErr_SetString(PyExc_TypeError, "could not find signal invocation " + "information for this object."); + return NULL; + } + + signal_id = ihint->signal_id; + name = g_signal_name(signal_id); + + len = PyTuple_Size(args); + if (signal_id == 0) { + PyErr_SetString(PyExc_TypeError, "unknown signal name"); + return NULL; + } + g_signal_query(signal_id, &query); + if (len < 0 || (gsize)len != query.n_params) { + gchar buf[128]; + + g_snprintf(buf, sizeof(buf), + "%d parameters needed for signal %s; %ld given", + query.n_params, name, (long int) len); + PyErr_SetString(PyExc_TypeError, buf); + return NULL; + } + params = g_new0(GValue, query.n_params + 1); + g_value_init(¶ms[0], G_OBJECT_TYPE(self->obj)); + g_value_set_object(¶ms[0], G_OBJECT(self->obj)); + + for (i = 0; i < query.n_params; i++) + g_value_init(¶ms[i + 1], + query.param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE); + for (i = 0; i < query.n_params; i++) { + PyObject *item = PyTuple_GetItem(args, i); + + if (pyg_boxed_check(item, (query.param_types[i] & ~G_SIGNAL_TYPE_STATIC_SCOPE))) { + g_value_set_static_boxed(¶ms[i+1], pyg_boxed_get(item, void)); + } + else if (pyg_value_from_pyobject(¶ms[i+1], item) < 0) { + gchar buf[128]; + + g_snprintf(buf, sizeof(buf), + "could not convert type %s to %s required for parameter %d", + Py_TYPE(item)->tp_name, + g_type_name(G_VALUE_TYPE(¶ms[i+1])), i); + PyErr_SetString(PyExc_TypeError, buf); + for (i = 0; i < query.n_params + 1; i++) + g_value_unset(¶ms[i]); + g_free(params); + return NULL; + } + } + if (query.return_type != G_TYPE_NONE) + g_value_init(&ret, query.return_type & ~G_SIGNAL_TYPE_STATIC_SCOPE); + g_signal_chain_from_overridden(params, &ret); + for (i = 0; i < query.n_params + 1; i++) + g_value_unset(¶ms[i]); + g_free(params); + if (query.return_type != G_TYPE_NONE) { + py_ret = pyg_value_as_pyobject(&ret, TRUE); + g_value_unset(&ret); + } else { + Py_INCREF(Py_None); + py_ret = Py_None; + } + return py_ret; +} + + +static PyObject * +pygobject_weak_ref(PyGObject *self, PyObject *args) +{ + Py_ssize_t len; + PyObject *callback = NULL, *user_data = NULL; + PyObject *retval; + + CHECK_GOBJECT(self); + + if ((len = PySequence_Length(args)) >= 1) { + callback = PySequence_ITEM(args, 0); + user_data = PySequence_GetSlice(args, 1, len); + } + retval = pygobject_weak_ref_new(self->obj, callback, user_data); + Py_XDECREF(callback); + Py_XDECREF(user_data); + return retval; +} + + +static PyObject * +pygobject_copy(PyGObject *self) +{ + PyErr_SetString(PyExc_TypeError, + "GObject descendants' instances are non-copyable"); + return NULL; +} + +static PyObject * +pygobject_deepcopy(PyGObject *self, PyObject *args) +{ + PyErr_SetString(PyExc_TypeError, + "GObject descendants' instances are non-copyable"); + return NULL; +} + + +static PyObject * +pygobject_disconnect_by_func(PyGObject *self, PyObject *args) +{ + PyObject *pyfunc = NULL, *repr = NULL; + GClosure *closure = NULL; + guint retval; + + CHECK_GOBJECT(self); + + if (!PyArg_ParseTuple(args, "O:GObject.disconnect_by_func", &pyfunc)) + return NULL; + + if (!PyCallable_Check(pyfunc)) { + PyErr_SetString(PyExc_TypeError, "first argument must be callable"); + return NULL; + } + + closure = gclosure_from_pyfunc(self, pyfunc); + if (!closure) { + repr = PyObject_Repr((PyObject*)pyfunc); + PyErr_Format(PyExc_TypeError, "nothing connected to %s", + PyUnicode_AsUTF8 (repr)); + Py_DECREF(repr); + return NULL; + } + + retval = g_signal_handlers_disconnect_matched(self->obj, + G_SIGNAL_MATCH_CLOSURE, + 0, 0, + closure, + NULL, NULL); + return pygi_guint_to_py (retval); +} + +static PyObject * +pygobject_handler_block_by_func(PyGObject *self, PyObject *args) +{ + PyObject *pyfunc = NULL, *repr = NULL; + GClosure *closure = NULL; + guint retval; + + CHECK_GOBJECT(self); + + if (!PyArg_ParseTuple(args, "O:GObject.handler_block_by_func", &pyfunc)) + return NULL; + + if (!PyCallable_Check(pyfunc)) { + PyErr_SetString(PyExc_TypeError, "first argument must be callable"); + return NULL; + } + + closure = gclosure_from_pyfunc(self, pyfunc); + if (!closure) { + repr = PyObject_Repr((PyObject*)pyfunc); + PyErr_Format(PyExc_TypeError, "nothing connected to %s", + PyUnicode_AsUTF8 (repr)); + Py_DECREF(repr); + return NULL; + } + + retval = g_signal_handlers_block_matched(self->obj, + G_SIGNAL_MATCH_CLOSURE, + 0, 0, + closure, + NULL, NULL); + return pygi_guint_to_py (retval); +} + +static PyObject * +pygobject_handler_unblock_by_func(PyGObject *self, PyObject *args) +{ + PyObject *pyfunc = NULL, *repr = NULL; + GClosure *closure = NULL; + guint retval; + + CHECK_GOBJECT(self); + + if (!PyArg_ParseTuple(args, "O:GObject.handler_unblock_by_func", &pyfunc)) + return NULL; + + if (!PyCallable_Check(pyfunc)) { + PyErr_SetString(PyExc_TypeError, "first argument must be callable"); + return NULL; + } + + closure = gclosure_from_pyfunc(self, pyfunc); + if (!closure) { + repr = PyObject_Repr((PyObject*)pyfunc); + PyErr_Format(PyExc_TypeError, "nothing connected to %s", + PyUnicode_AsUTF8 (repr)); + Py_DECREF(repr); + return NULL; + } + + retval = g_signal_handlers_unblock_matched(self->obj, + G_SIGNAL_MATCH_CLOSURE, + 0, 0, + closure, + NULL, NULL); + return pygi_guint_to_py (retval); +} + + +static PyMethodDef pygobject_methods[] = { + { "get_property", (PyCFunction)pygobject_get_property, METH_VARARGS }, + { "get_properties", (PyCFunction)pygobject_get_properties, METH_VARARGS }, + { "set_property", (PyCFunction)pygobject_set_property, METH_VARARGS }, + { "set_properties", (PyCFunction)pygobject_set_properties, METH_VARARGS|METH_KEYWORDS }, + { "bind_property", (PyCFunction)pygobject_bind_property, METH_VARARGS|METH_KEYWORDS }, + { "connect", (PyCFunction)pygobject_connect, METH_VARARGS }, + { "connect_after", (PyCFunction)pygobject_connect_after, METH_VARARGS }, + { "connect_object", (PyCFunction)pygobject_connect_object, METH_VARARGS }, + { "connect_object_after", (PyCFunction)pygobject_connect_object_after, METH_VARARGS }, + { "disconnect_by_func", (PyCFunction)pygobject_disconnect_by_func, METH_VARARGS }, + { "handler_block_by_func", (PyCFunction)pygobject_handler_block_by_func, METH_VARARGS }, + { "handler_unblock_by_func", (PyCFunction)pygobject_handler_unblock_by_func, METH_VARARGS }, + { "emit", (PyCFunction)pygobject_emit, METH_VARARGS }, + { "chain", (PyCFunction)pygobject_chain_from_overridden,METH_VARARGS }, + { "weak_ref", (PyCFunction)pygobject_weak_ref, METH_VARARGS }, + { "__copy__", (PyCFunction)pygobject_copy, METH_NOARGS }, + { "__deepcopy__", (PyCFunction)pygobject_deepcopy, METH_VARARGS }, + { NULL, NULL, 0 } +}; + +#ifdef PYGI_OBJECT_USE_CUSTOM_DICT +static PyObject * +pygobject_get_dict(PyGObject *self, void *closure) +{ + if (self->inst_dict == NULL) { + self->inst_dict = PyDict_New(); + pygobject_toggle_ref_ensure (self); + } + Py_INCREF(self->inst_dict); + return self->inst_dict; +} +#endif + +static PyObject * +pygobject_get_refcount(PyGObject *self, void *closure) +{ + if (self->obj == NULL) { + PyErr_Format(PyExc_TypeError, "GObject instance is not yet created"); + return NULL; + } + return pygi_guint_to_py (self->obj->ref_count); +} + +static PyObject * +pygobject_get_pointer(PyGObject *self, void *closure) +{ + return PyCapsule_New (self->obj, NULL, NULL); +} + +static int +pygobject_setattro(PyObject *self, PyObject *name, PyObject *value) +{ + int res; + res = PyGObject_Type.tp_base->tp_setattro(self, name, value); + pygobject_toggle_ref_ensure ((PyGObject *) self); + return res; +} + +static PyGetSetDef pygobject_getsets[] = { +#ifdef PYGI_OBJECT_USE_CUSTOM_DICT + { "__dict__", (getter)pygobject_get_dict, (setter)0 }, +#endif + { "__grefcount__", (getter)pygobject_get_refcount, (setter)0, }, + { "__gpointer__", (getter)pygobject_get_pointer, (setter)0, }, + { NULL, 0, 0 } +}; + +/* ------------------------------------ */ +/* ****** GObject weak reference ****** */ +/* ------------------------------------ */ + +typedef struct { + PyObject_HEAD + GObject *obj; + PyObject *callback; + PyObject *user_data; + gboolean have_floating_ref; +} PyGObjectWeakRef; + +PYGI_DEFINE_TYPE("gi._gi.GObjectWeakRef", PyGObjectWeakRef_Type, PyGObjectWeakRef); + +static int +pygobject_weak_ref_traverse(PyGObjectWeakRef *self, visitproc visit, void *arg) +{ + if (self->callback && visit(self->callback, arg) < 0) + return -1; + if (self->user_data && visit(self->user_data, arg) < 0) + return -1; + return 0; +} + +static void +pygobject_weak_ref_notify(PyGObjectWeakRef *self, GObject *dummy) +{ + self->obj = NULL; + if (self->callback) { + PyObject *retval; + PyGILState_STATE state = PyGILState_Ensure(); + retval = PyObject_Call(self->callback, self->user_data, NULL); + if (retval) { + if (retval != Py_None) + PyErr_Format(PyExc_TypeError, + "GObject weak notify callback returned a value" + " of type %s, should return None", + Py_TYPE(retval)->tp_name); + Py_DECREF(retval); + PyErr_Print(); + } else + PyErr_Print(); + Py_CLEAR(self->callback); + Py_CLEAR(self->user_data); + if (self->have_floating_ref) { + self->have_floating_ref = FALSE; + Py_DECREF((PyObject *) self); + } + PyGILState_Release(state); + } +} + +static inline int +pygobject_weak_ref_clear(PyGObjectWeakRef *self) +{ + Py_CLEAR(self->callback); + Py_CLEAR(self->user_data); + if (self->obj) { + g_object_weak_unref(self->obj, (GWeakNotify) pygobject_weak_ref_notify, self); + self->obj = NULL; + } + return 0; +} + +static void +pygobject_weak_ref_dealloc(PyGObjectWeakRef *self) +{ + PyObject_GC_UnTrack((PyObject *)self); + pygobject_weak_ref_clear(self); + PyObject_GC_Del(self); +} + +static PyObject * +pygobject_weak_ref_new(GObject *obj, PyObject *callback, PyObject *user_data) +{ + PyGObjectWeakRef *self; + + self = PyObject_GC_New(PyGObjectWeakRef, &PyGObjectWeakRef_Type); + self->callback = callback; + self->user_data = user_data; + Py_XINCREF(self->callback); + Py_XINCREF(self->user_data); + self->obj = obj; + g_object_weak_ref(self->obj, (GWeakNotify) pygobject_weak_ref_notify, self); + if (callback != NULL) { + /* when we have a callback, we should INCREF the weakref + * object to make it stay alive even if it goes out of scope */ + self->have_floating_ref = TRUE; + Py_INCREF((PyObject *) self); + } + return (PyObject *) self; +} + +static PyObject * +pygobject_weak_ref_unref(PyGObjectWeakRef *self, PyObject *args) +{ + if (!self->obj) { + PyErr_SetString(PyExc_ValueError, "weak ref already unreffed"); + return NULL; + } + g_object_weak_unref(self->obj, (GWeakNotify) pygobject_weak_ref_notify, self); + self->obj = NULL; + if (self->have_floating_ref) { + self->have_floating_ref = FALSE; + Py_DECREF(self); + } + Py_INCREF(Py_None); + return Py_None; +} + +static PyMethodDef pygobject_weak_ref_methods[] = { + { "unref", (PyCFunction)pygobject_weak_ref_unref, METH_NOARGS}, + { NULL, NULL, 0} +}; + +static PyObject * +pygobject_weak_ref_call(PyGObjectWeakRef *self, PyObject *args, PyObject *kw) +{ + static char *argnames[] = {NULL}; + + if (!PyArg_ParseTupleAndKeywords(args, kw, ":__call__", argnames)) + return NULL; + + if (self->obj) + return pygobject_new(self->obj); + else { + Py_INCREF(Py_None); + return Py_None; + } +} + +static gpointer +pyobject_copy(gpointer boxed) +{ + PyObject *object = boxed; + PyGILState_STATE state; + + state = PyGILState_Ensure(); + Py_INCREF(object); + PyGILState_Release(state); + return object; +} + +static void +pyobject_free(gpointer boxed) +{ + PyObject *object = boxed; + PyGILState_STATE state; + + state = PyGILState_Ensure(); + Py_DECREF(object); + PyGILState_Release(state); +} + +/** + * Returns 0 on success, or -1 and sets an exception. + */ +int +pyi_object_register_types(PyObject *d) +{ + PyObject *o, *descr; + + pygobject_custom_key = g_quark_from_static_string("PyGObject::custom"); + pygobject_class_key = g_quark_from_static_string("PyGObject::class"); + pygobject_class_init_key = g_quark_from_static_string("PyGObject::class-init"); + pygobject_wrapper_key = g_quark_from_static_string("PyGObject::wrapper"); + pygobject_has_updated_constructor_key = + g_quark_from_static_string("PyGObject::has-updated-constructor"); + pygobject_instance_data_key = g_quark_from_static_string("PyGObject::instance-data"); + + /* GObject */ + if (!PY_TYPE_OBJECT) + PY_TYPE_OBJECT = g_boxed_type_register_static("PyObject", + pyobject_copy, + pyobject_free); + PyGObject_Type.tp_dealloc = (destructor)pygobject_dealloc; + PyGObject_Type.tp_richcompare = pygobject_richcompare; + PyGObject_Type.tp_repr = (reprfunc)pygobject_repr; + PyGObject_Type.tp_hash = (hashfunc)pygobject_hash; + PyGObject_Type.tp_setattro = (setattrofunc)pygobject_setattro; + PyGObject_Type.tp_flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | + Py_TPFLAGS_HAVE_GC); + PyGObject_Type.tp_traverse = (traverseproc)pygobject_traverse; + PyGObject_Type.tp_clear = (inquiry)pygobject_clear; + PyGObject_Type.tp_weaklistoffset = offsetof(PyGObject, weakreflist); + PyGObject_Type.tp_methods = pygobject_methods; + PyGObject_Type.tp_getset = pygobject_getsets; +#ifdef PYGI_OBJECT_USE_CUSTOM_DICT + PyGObject_Type.tp_dictoffset = offsetof(PyGObject, inst_dict); +#endif + PyGObject_Type.tp_init = (initproc)pygobject_init; + PyGObject_Type.tp_free = (freefunc)pygobject_free; + PyGObject_Type.tp_alloc = PyType_GenericAlloc; + PyGObject_Type.tp_new = PyType_GenericNew; + pygobject_register_class(d, "GObject", G_TYPE_OBJECT, + &PyGObject_Type, NULL); + PyDict_SetItemString(PyGObject_Type.tp_dict, "__gdoc__", + pyg_object_descr_doc_get()); + + /* GProps */ + PyGProps_Type.tp_dealloc = (destructor)PyGProps_dealloc; + PyGProps_Type.tp_as_sequence = (PySequenceMethods*)&_PyGProps_as_sequence; + PyGProps_Type.tp_getattro = (getattrofunc)PyGProps_getattro; + PyGProps_Type.tp_setattro = (setattrofunc)PyGProps_setattro; + PyGProps_Type.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_GC; + PyGProps_Type.tp_doc = "The properties of the GObject accessible as " + "Python attributes."; + PyGProps_Type.tp_traverse = (traverseproc)pygobject_props_traverse; + PyGProps_Type.tp_iter = (getiterfunc)pygobject_props_get_iter; + PyGProps_Type.tp_methods = pygobject_props_methods; + if (PyType_Ready(&PyGProps_Type) < 0) + return -1; + + /* GPropsDescr */ + PyGPropsDescr_Type.tp_flags = Py_TPFLAGS_DEFAULT; + PyGPropsDescr_Type.tp_descr_get = pyg_props_descr_descr_get; + if (PyType_Ready(&PyGPropsDescr_Type) < 0) + return -1; + descr = PyObject_New(PyObject, &PyGPropsDescr_Type); + PyDict_SetItemString(PyGObject_Type.tp_dict, "props", descr); + PyDict_SetItemString(PyGObject_Type.tp_dict, "__module__", + o=PyUnicode_FromString ("gi._gi")); + Py_DECREF(o); + + /* GPropsIter */ + PyGPropsIter_Type.tp_dealloc = (destructor)pyg_props_iter_dealloc; + PyGPropsIter_Type.tp_flags = Py_TPFLAGS_DEFAULT; + PyGPropsIter_Type.tp_doc = "GObject properties iterator"; + PyGPropsIter_Type.tp_iternext = (iternextfunc)pygobject_props_iter_next; + if (PyType_Ready(&PyGPropsIter_Type) < 0) + return -1; + + PyGObjectWeakRef_Type.tp_dealloc = (destructor)pygobject_weak_ref_dealloc; + PyGObjectWeakRef_Type.tp_call = (ternaryfunc)pygobject_weak_ref_call; + PyGObjectWeakRef_Type.tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_HAVE_GC; + PyGObjectWeakRef_Type.tp_doc = "A GObject weak reference"; + PyGObjectWeakRef_Type.tp_traverse = (traverseproc)pygobject_weak_ref_traverse; + PyGObjectWeakRef_Type.tp_clear = (inquiry)pygobject_weak_ref_clear; + PyGObjectWeakRef_Type.tp_methods = pygobject_weak_ref_methods; + if (PyType_Ready(&PyGObjectWeakRef_Type) < 0) + return -1; + PyDict_SetItemString(d, "GObjectWeakRef", (PyObject *) &PyGObjectWeakRef_Type); + + return 0; +} + +PyObject * +pyg_object_new (PyGObject *self, PyObject *args, PyObject *kwargs) +{ + PyObject *pytype; + GType type; + GObject *obj = NULL; + GObjectClass *class; + guint n_properties = 0, i; + const GValue *values = NULL; + const char **names = NULL; + + if (!PyArg_ParseTuple (args, "O:gobject.new", &pytype)) { + return NULL; + } + + if ((type = pyg_type_from_object (pytype)) == 0) + return NULL; + + if (G_TYPE_IS_ABSTRACT(type)) { + PyErr_Format(PyExc_TypeError, "cannot create instance of abstract " + "(non-instantiable) type `%s'", g_type_name(type)); + return NULL; + } + + if ((class = g_type_class_ref (type)) == NULL) { + PyErr_SetString(PyExc_TypeError, + "could not get a reference to type class"); + return NULL; + } + + if (!pygobject_prepare_construct_properties (class, kwargs, &n_properties, &names, &values)) + goto cleanup; + + obj = pygobject_object_new_with_properties(type, n_properties, names, values); + + if (!obj) + PyErr_SetString (PyExc_RuntimeError, "could not create object"); + + cleanup: + for (i = 0; i < n_properties; i++) { + g_free(names[i]); + g_value_unset(&values[i]); + } + g_free(names); + g_free(values); + + g_type_class_unref(class); + + if (obj) { + pygobject_sink (obj); + self = (PyGObject *) pygobject_new((GObject *)obj); + g_object_unref(obj); + } else + self = NULL; + + return (PyObject *) self; +} |