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Add g_signal_accumulator_true_handled(), to do TRUE-stops-emit signals.

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Fri Sep 12 16:31:40 2003  Owen Taylor  <otaylor@redhat.com>

        * gsignal.[ch]: Add g_signal_accumulator_true_handled(), to
        do TRUE-stops-emit signals.

        * Makefile.am: Move testoverride.c and testifaceinit.c to
        tests/gobject.
This commit is contained in:
Owen Taylor 2003-09-12 20:33:31 +00:00 committed by Owen Taylor
parent c3acb9da0c
commit 32bc3c4197
8 changed files with 31 additions and 861 deletions
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2
gobject/.cvsignore
View File

@ -26,6 +26,4 @@ gmarshal.strings
oldest-source-stamp
stamp-gmarshal.h
testgobject
testoverride
testifaceinit
.saved

8
gobject/ChangeLog
View File

@ -1,3 +1,11 @@
Fri Sep 12 16:31:40 2003 Owen Taylor <otaylor@redhat.com>
* gsignal.[ch]: Add g_signal_accumulator_true_handled(), to
do TRUE-stops-emit signals.
* Makefile.am: Move testoverride.c and testifaceinit.c to
tests/gobject.
2003-09-12 Matthias Clasen <maclas@gmx.de>
Make the g_value_set_x_take_ownership() functions "official"

6
gobject/Makefile.am
View File

@ -177,20 +177,16 @@ libgobject_2_0_la_SOURCES = $(gobject_target_sources)
#
bin_PROGRAMS = gobject-query glib-genmarshal
bin_SCRIPTS = glib-mkenums
noinst_PROGRAMS = testgobject testifaceinit testoverride
noinst_PROGRAMS = testgobject
# source files
gobject_query_SOURCES = gobject-query.c
glib_genmarshal_SOURCES = glib-genmarshal.c
testgobject_SOURCES = testgobject.c
testifaceinit_SOURCES = testifaceinit.c
testoverride_SOURCES = testoverride.c
# link programs against libgobject
progs_LDADD = ./libgobject-2.0.la $(libglib)
glib_genmarshal_LDADD = $(libglib)
gobject_query_LDADD = $(progs_LDADD)
testgobject_LDADD = $(progs_LDADD)
testifaceinit_LDADD = $(progs_LDADD)
testoverride_LDADD = $(progs_LDADD)
#
# auxillary files

2
gobject/gmarshal.list
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@ -40,8 +40,8 @@ VOID:PARAM
VOID:BOXED
VOID:POINTER
VOID:OBJECT
STRING:OBJECT,POINTER
# GRuntime specific marshallers
VOID:UINT,POINTER
BOOL:FLAGS
STRING:OBJECT,POINTER

16
gobject/gsignal.c
View File

@ -2586,6 +2586,22 @@ type_debug_name (GType type)
return "<invalid>";
}
gboolean
g_signal_accumulator_true_handled (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy)
{
gboolean continue_emission;
gboolean signal_handled;
signal_handled = g_value_get_boolean (handler_return);
g_value_set_boolean (return_accu, signal_handled);
continue_emission = !signal_handled;
return continue_emission;
}
/* --- compile standard marshallers --- */
#include "gobject.h"
#include "genums.h"

5
gobject/gsignal.h
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@ -256,6 +256,11 @@ void g_signal_chain_from_overridden (const GValue *instance_and_param
0, 0, NULL, (func), (data))
gboolean g_signal_accumulator_true_handled (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy);
/*< private >*/
void g_signal_handlers_destroy (gpointer instance);
void _g_signals_destroy (GType itype);

474
gobject/testifaceinit.c
View File

@ -1,474 +0,0 @@
/* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 2001, 2003 Red Hat, Inc.
*
* 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 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "TestIfaceInit"
#include <glib-object.h>
/* What this test tests is the ability to add interfaces dynamically; in
* particular adding interfaces to a class while that class is being
* initialized.
*
* The test defines 5 interfaces:
*
* - TestIface1 is added before the class is initialized
* - TestIface2 is added in base_object_base_init()
* - TestIface3 is added in test_iface1_base_init()
* - TestIface4 is added in test_object_class_init()
* - TestIface5 is added in test_object_test_iface1_init()
* - TestIface6 is added after the class is initialized
*/
#define DEFINE_TYPE(name, prefix, \
class_init, base_init, instance_init, \
parent_type) \
GType \
prefix ## _get_type (void) \
{ \
static GType object_type = 0; \
\
if (!object_type) \
{ \
static const GTypeInfo object_info = \
{ \
sizeof (name ## Class), \
(GBaseInitFunc) base_init, \
(GBaseFinalizeFunc) NULL, \
(GClassInitFunc) class_init, \
(GClassFinalizeFunc) NULL, \
NULL, /* class_data */ \
sizeof (name), \
0, /* n_prelocs */ \
(GInstanceInitFunc) instance_init \
}; \
\
object_type = g_type_register_static (parent_type, \
# name, \
&object_info, 0); \
} \
\
return object_type; \
}
#define DEFINE_IFACE(name, prefix, base_init, dflt_init) \
GType \
prefix ## _get_type (void) \
{ \
static GType iface_type = 0; \
\
if (!iface_type) \
{ \
static const GTypeInfo iface_info = \
{ \
sizeof (name ## Class), \
(GBaseInitFunc) base_init, \
(GBaseFinalizeFunc) NULL, \
(GClassInitFunc) dflt_init, \
}; \
\
iface_type = g_type_register_static (G_TYPE_INTERFACE, \
# name, \
&iface_info, 0); \
} \
return iface_type; \
}
/* All 6 interfaces actually share the same class structure, though
* we use separate typedefs
*/
typedef struct _TestIfaceClass TestIfaceClass;
struct _TestIfaceClass
{
GTypeInterface base_iface;
guint val;
guint base_val;
guint default_val;
};
#define TEST_TYPE_IFACE1 (test_iface1_get_type ())
#define TEST_IFACE1_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE1, TestIface1Class))
typedef struct _TestIface1 TestIface1;
typedef struct _TestIfaceClass TestIface1Class;
static void test_iface1_base_init (TestIface1Class *iface);
static void test_iface1_default_init (TestIface1Class *iface, gpointer class_data);
static DEFINE_IFACE(TestIface1, test_iface1, test_iface1_base_init, test_iface1_default_init)
#define TEST_TYPE_IFACE2 (test_iface2_get_type ())
#define TEST_IFACE2_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE2, TestIface2Class))
typedef struct _TestIface2 TestIface2;
typedef struct _TestIfaceClass TestIface2Class;
static void test_iface2_base_init (TestIface2Class *iface);
static DEFINE_IFACE(TestIface2, test_iface2, test_iface2_base_init, NULL)
#define TEST_TYPE_IFACE3 (test_iface3_get_type ())
#define TEST_IFACE3_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE3, TestIface3Class))
typedef struct _TestIface3 TestIface3;
typedef struct _TestIfaceClass TestIface3Class;
static void test_iface3_base_init (TestIface3Class *iface);
static DEFINE_IFACE(TestIface3, test_iface3, test_iface3_base_init, NULL)
#define TEST_TYPE_IFACE4 (test_iface4_get_type ())
#define TEST_IFACE4_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE4, TestIface4Class))
typedef struct _TestIface4 TestIface4;
typedef struct _TestIfaceClass TestIface4Class;
static void test_iface4_base_init (TestIface4Class *iface);
static DEFINE_IFACE(TestIface4, test_iface4, test_iface4_base_init, NULL)
#define TEST_TYPE_IFACE5 (test_iface5_get_type ())
#define TEST_IFACE5_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE5, TestIface5Class))
typedef struct _TestIface5 TestIface5;
typedef struct _TestIfaceClass TestIface5Class;
static void test_iface5_base_init (TestIface5Class *iface);
static DEFINE_IFACE(TestIface5, test_iface5, test_iface5_base_init, NULL)
#define TEST_TYPE_IFACE6 (test_iface6_get_type ())
#define TEST_IFACE6_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE6, TestIface6Class))
typedef struct _TestIface6 TestIface6;
typedef struct _TestIfaceClass TestIface6Class;
static void test_iface6_base_init (TestIface6Class *iface);
static DEFINE_IFACE(TestIface6, test_iface6, test_iface6_base_init, NULL)
/*
* BaseObject, a parent class for TestObject
*/
#define BASE_TYPE_OBJECT (base_object_get_type ())
typedef struct _BaseObject BaseObject;
typedef struct _BaseObjectClass BaseObjectClass;
struct _BaseObject
{
GObject parent_instance;
};
struct _BaseObjectClass
{
GObjectClass parent_class;
};
/*
* TestObject, a parent class for TestObject
*/
#define TEST_TYPE_OBJECT (test_object_get_type ())
typedef struct _TestObject TestObject;
typedef struct _TestObjectClass TestObjectClass;
struct _TestObject
{
BaseObject parent_instance;
};
struct _TestObjectClass
{
BaseObjectClass parent_class;
};
#define TEST_CALLED_ONCE() G_STMT_START { \
static gboolean called = 0; \
g_assert (!called); \
called = TRUE; \
} G_STMT_END
#define CHECK_IFACE_TWICE(iface) G_STMT_START { \
static guint n_calls = 0; \
n_calls++; \
g_assert (n_calls <= 2); \
g_assert (G_TYPE_IS_INTERFACE (((GTypeInterface*) iface)->g_type)); \
if (n_calls == 1) \
g_assert (((GTypeInterface*) iface)->g_instance_type == 0); \
else \
g_assert (G_TYPE_IS_OBJECT (((GTypeInterface*) iface)->g_instance_type)); \
} G_STMT_END
#define ADD_IFACE(n) G_STMT_START { \
static GInterfaceInfo iface_info = { \
(GInterfaceInitFunc)test_object_test_iface##n##_init, \
NULL, NULL }; \
\
g_type_add_interface_static (TEST_TYPE_OBJECT, \
test_iface##n##_get_type (), \
&iface_info); \
\
} G_STMT_END
static gboolean base1, base2, base3, base4, base5, base6;
static gboolean iface1, iface2, iface3, iface4, iface5, iface6;
static void test_object_test_iface1_init (TestIface1Class *iface);
static void test_object_test_iface2_init (TestIface1Class *iface);
static void test_object_test_iface3_init (TestIface3Class *iface);
static void test_object_test_iface4_init (TestIface4Class *iface);
static void test_object_test_iface5_init (TestIface5Class *iface);
static void test_object_test_iface6_init (TestIface6Class *iface);
static GType test_object_get_type (void);
static void
test_object_test_iface1_init (TestIface1Class *iface)
{
TEST_CALLED_ONCE();
g_assert (iface->default_val == 0x111111);
iface->val = 0x10001;
ADD_IFACE(5);
iface1 = TRUE;
g_print ("interface1 object initializer\n");
}
static void
test_object_test_iface2_init (TestIface2Class *iface)
{
TEST_CALLED_ONCE();
iface->val = 0x20002;
iface2 = TRUE;
}
static void
test_object_test_iface3_init (TestIface3Class *iface)
{
TEST_CALLED_ONCE();
iface->val = 0x30003;
iface3 = TRUE;
}
static void
test_object_test_iface4_init (TestIface4Class *iface)
{
TEST_CALLED_ONCE();
iface->val = 0x40004;
iface4 = TRUE;
}
static void
test_object_test_iface5_init (TestIface5Class *iface)
{
TEST_CALLED_ONCE();
iface->val = 0x50005;
iface5 = TRUE;
}
static void
test_object_test_iface6_init (TestIface6Class *iface)
{
TEST_CALLED_ONCE();
iface->val = 0x60006;
iface6 = TRUE;
}
static void
test_iface1_default_init (TestIface1Class *iface,
gpointer class_data)
{
TEST_CALLED_ONCE();
g_assert (iface->base_iface.g_type == TEST_TYPE_IFACE1);
g_assert (iface->base_iface.g_instance_type == 0);
g_assert (iface->base_val == 0x110011);
g_assert (iface->val == 0);
g_assert (iface->default_val == 0);
iface->default_val = 0x111111;
g_print ("interface1 default initializer\n");
}
static void
test_iface1_base_init (TestIface1Class *iface)
{
static guint n_calls = 0;
n_calls++;
g_assert (n_calls <= 2);
if (n_calls == 1)
{
iface->base_val = 0x110011;
g_assert (iface->default_val == 0);
}
else
{
g_assert (iface->base_val == 0x110011);
g_assert (iface->default_val == 0x111111);
}
if (n_calls == 1)
ADD_IFACE(3);
base1 = TRUE;
g_print ("interface1 base initializer\n");
}
static void
test_iface2_base_init (TestIface2Class *iface)
{
CHECK_IFACE_TWICE (iface);
iface->base_val = 0x220022;
base2 = TRUE;
}
static void
test_iface3_base_init (TestIface3Class *iface)
{
CHECK_IFACE_TWICE (iface);
iface->base_val = 0x330033;
base3 = TRUE;
}
static void
test_iface4_base_init (TestIface4Class *iface)
{
CHECK_IFACE_TWICE (iface);
iface->base_val = 0x440044;
base4 = TRUE;
}
static void
test_iface5_base_init (TestIface5Class *iface)
{
CHECK_IFACE_TWICE (iface);
iface->base_val = 0x550055;
base5 = TRUE;
}
static void
test_iface6_base_init (TestIface6Class *iface)
{
CHECK_IFACE_TWICE (iface);
iface->base_val = 0x660066;
base6 = TRUE;
}
static void
base_object_base_init (BaseObjectClass *class)
{
static int n_called = 0;
n_called++;
/* The second time this is called is for TestObject */
if (n_called == 2)
{
ADD_IFACE(2);
/* No interface base init functions should have been called yet
*/
g_assert (!base1 && !base2 && !base3 && !base4 && !base5 && !base6);
g_assert (!iface1 && !iface2 && !iface3 && !iface4 && !iface5 && !iface6);
}
}
static void
test_object_class_init (TestObjectClass *class)
{
ADD_IFACE(4);
/* At this point, the base init functions for all interfaces that have
* been added should be called, but no interface init functions.
*/
g_assert (base1 && base2 && base3 && base4 && !base5 && !base6);
g_assert (!iface1 && !iface2 && !iface3 && !iface4 && !iface5 && !iface6);
}
static DEFINE_TYPE(BaseObject, base_object,
NULL, base_object_base_init, NULL,
G_TYPE_OBJECT);
static DEFINE_TYPE(TestObject, test_object,
test_object_class_init, NULL, NULL,
BASE_TYPE_OBJECT);
int
main (int argc,
char *argv[])
{
TestObject *object;
TestObjectClass *object_class;
TestIfaceClass *iface;
g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) |
G_LOG_LEVEL_WARNING |
G_LOG_LEVEL_CRITICAL);
g_type_init ();
/* We force the interfaces to be registered in a different order
* than we add them, so our logic doesn't always deal with interfaces
* added at the end.
*/
(void)TEST_TYPE_IFACE4;
(void)TEST_TYPE_IFACE2;
(void)TEST_TYPE_IFACE6;
(void)TEST_TYPE_IFACE5;
(void)TEST_TYPE_IFACE3;
(void)TEST_TYPE_IFACE1;
ADD_IFACE(1);
object_class = g_type_class_ref (TEST_TYPE_OBJECT);
ADD_IFACE(6);
/* All base and interface init functions should have been called
*/
g_assert (base1 && base2 && base3 && base4 && base5 && base6);
g_assert (iface1 && iface2 && iface3 && iface4 && iface5 && iface6);
object = g_object_new (TEST_TYPE_OBJECT, NULL);
iface = TEST_IFACE1_GET_CLASS (object);
g_assert (iface && iface->val == 0x10001 && iface->base_val == 0x110011);
iface = TEST_IFACE3_GET_CLASS (object);
g_assert (iface && iface->val == 0x30003 && iface->base_val == 0x330033);
iface = TEST_IFACE4_GET_CLASS (object);
g_assert (iface && iface->val == 0x40004 && iface->base_val == 0x440044);
iface = TEST_IFACE5_GET_CLASS (object);
g_assert (iface && iface->val == 0x50005 && iface->base_val == 0x550055);
iface = TEST_IFACE6_GET_CLASS (object);
g_assert (iface && iface->val == 0x60006 && iface->base_val == 0x660066);
g_print ("testifaceinit: all done.\n");
return 0;
}

379
gobject/testoverride.c
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@ -1,379 +0,0 @@
/* -*- mode: C; c-basic-offset: 4 -*- */
#include <glib.h>
#include <glib-object.h>
static guint foo_signal_id = 0;
static guint bar_signal_id = 0;
static GType test_i_get_type (void);
static GType test_a_get_type (void);
static GType test_b_get_type (void);
static GType test_c_get_type (void);
#define TEST_TYPE_I (test_i_get_type ())
#define TEST_I(object) (G_TYPE_CHECK_INSTANCE_CAST((object), TEST_TYPE_I, TestI))
#define TEST_I_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST((vtable), TEST_TYPE_I, TestIClass))
#define TEST_IS_I(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), TEST_TYPE_I))
#define TEST_IS_I_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE((vtable), TEST_TYPE_I))
#define TEST_I_GET_CLASS(object) (G_TYPE_INSTANCE_GET_INTERFACE((object), TEST_TYPE_I, TestIClass))
typedef struct _TestI TestI;
typedef struct _TestIClass TestIClass;
struct _TestIClass {
GTypeInterface base_iface;
};
static void
test_i_foo (TestI *self)
{
g_print("TestI::foo called.\n");
}
static void
test_i_base_init (gpointer g_class)
{
static gboolean initialised = FALSE;
if (!initialised) {
foo_signal_id = g_signal_newv("foo",
TEST_TYPE_I,
G_SIGNAL_RUN_LAST,
g_cclosure_new(G_CALLBACK(test_i_foo),
NULL, NULL),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0, NULL);
}
initialised = TRUE;
}
static GType
test_i_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo type_info = {
sizeof (TestIClass),
(GBaseInitFunc) test_i_base_init, /* base_init */
NULL, /* base_finalize */
};
type = g_type_register_static (G_TYPE_INTERFACE, "TestI",
&type_info, 0);
}
return type;
}
#define TEST_TYPE_A (test_a_get_type())
#define TEST_A(object) (G_TYPE_CHECK_INSTANCE_CAST((object), TEST_TYPE_A, TestA))
#define TEST_A_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), TEST_TYPE_A, TestAClass))
#define TEST_IS_A(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), TEST_TYPE_A))
#define TEST_IS_A_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), TEST_TYPE_A))
#define TEST_A_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), TEST_TYPE_A, TestAClass))
typedef struct _TestA TestA;
typedef struct _TestAClass TestAClass;
struct _TestA {
GObject parent;
};
struct _TestAClass {
GObjectClass parent_class;
void (* bar) (TestA *self);
};
static void
test_a_foo (TestI *self)
{
GValue args[1] = { { 0, } };
g_print("TestA::foo called. Chaining up.\n");
g_value_init (&args[0], TEST_TYPE_A);
g_value_set_object (&args[0], self);
g_assert (g_signal_get_invocation_hint (self)->signal_id == foo_signal_id);
g_signal_chain_from_overridden (args, NULL);
g_value_unset (&args[0]);
}
static void
test_a_bar (TestA *self)
{
g_print("TestA::bar called.\n");
}
static void
test_a_class_init (TestAClass *class)
{
class->bar = test_a_bar;
bar_signal_id = g_signal_new("bar",
TEST_TYPE_A,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (TestAClass, bar),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
test_a_interface_init (TestIClass *iface)
{
g_signal_override_class_closure (foo_signal_id,
TEST_TYPE_A,
g_cclosure_new (G_CALLBACK (test_a_foo),
NULL, NULL));
}
static GType
test_a_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo type_info = {
sizeof(TestAClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) test_a_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(TestAClass),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
static const GInterfaceInfo interface_info = {
(GInterfaceInitFunc) test_a_interface_init,
NULL,
NULL
};
type = g_type_register_static (G_TYPE_OBJECT, "TestA",
&type_info, 0);
g_type_add_interface_static (type, TEST_TYPE_I, &interface_info);
}
return type;
}
#define TEST_TYPE_B (test_b_get_type())
#define TEST_B(object) (G_TYPE_CHECK_INSTANCE_CAST((object), TEST_TYPE_B, TestB))
#define TEST_B_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), TEST_TYPE_B, TestBClass))
#define TEST_IS_B(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), TEST_TYPE_B))
#define TEST_IS_B_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), TEST_TYPE_B))
#define TEST_B_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), TEST_TYPE_B, TestBClass))
typedef struct _TestB TestB;
typedef struct _TestBClass TestBClass;
struct _TestB {
TestA parent;
};
struct _TestBClass {
TestAClass parent_class;
};
static void
test_b_foo (TestA *self)
{
GValue args[1] = { { 0, } };
g_print("TestB::foo called. Chaining up.\n");
g_value_init (&args[0], TEST_TYPE_A);
g_value_set_object (&args[0], self);
g_assert (g_signal_get_invocation_hint (self)->signal_id == foo_signal_id);
g_signal_chain_from_overridden (args, NULL);
g_value_unset (&args[0]);
}
static void
test_b_bar (TestI *self)
{
GValue args[1] = { { 0, } };
g_print("TestB::bar called. Chaining up.\n");
g_value_init (&args[0], TEST_TYPE_A);
g_value_set_object (&args[0], self);
g_assert (g_signal_get_invocation_hint (self)->signal_id == bar_signal_id);
g_signal_chain_from_overridden (args, NULL);
g_value_unset (&args[0]);
}
static void
test_b_class_init (TestBClass *class)
{
g_signal_override_class_closure (foo_signal_id,
TEST_TYPE_B,
g_cclosure_new (G_CALLBACK (test_b_foo),
NULL, NULL));
g_signal_override_class_closure (bar_signal_id,
TEST_TYPE_B,
g_cclosure_new (G_CALLBACK (test_b_bar),
NULL, NULL));
}
static GType
test_b_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo type_info = {
sizeof(TestBClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) test_b_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(TestBClass),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
type = g_type_register_static (TEST_TYPE_A, "TestB",
&type_info, 0);
}
return type;
}
#define TEST_TYPE_C (test_c_get_type())
#define TEST_C(object) (G_TYPE_CHECK_INSTANCE_CAST((object), TEST_TYPE_C, TestC))
#define TEST_C_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), TEST_TYPE_C, TestCClass))
#define TEST_IS_C(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), TEST_TYPE_C))
#define TEST_IS_C_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), TEST_TYPE_C))
#define TEST_C_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), TEST_TYPE_C, TestCClass))
typedef struct _TestC TestC;
typedef struct _TestCClass TestCClass;
struct _TestC {
TestB parent;
};
struct _TestCClass {
TestBClass parent_class;
};
static void
test_c_foo (TestA *self)
{
GValue args[1] = { { 0, } };
g_print("TestC::foo called. Chaining up.\n");
g_value_init (&args[0], TEST_TYPE_A);
g_value_set_object (&args[0], self);
g_assert (g_signal_get_invocation_hint (self)->signal_id == foo_signal_id);
g_signal_chain_from_overridden (args, NULL);
g_value_unset (&args[0]);
}
static void
test_c_bar (TestI *self)
{
GValue args[1] = { { 0, } };
g_print("TestC::bar called. Chaining up.\n");
g_value_init (&args[0], TEST_TYPE_A);
g_value_set_object (&args[0], self);
g_assert (g_signal_get_invocation_hint (self)->signal_id == bar_signal_id);
g_signal_chain_from_overridden (args, NULL);
g_value_unset (&args[0]);
}
static void
test_c_class_init (TestBClass *class)
{
g_signal_override_class_closure (foo_signal_id,
TEST_TYPE_C,
g_cclosure_new (G_CALLBACK (test_c_foo),
NULL, NULL));
g_signal_override_class_closure (bar_signal_id,
TEST_TYPE_C,
g_cclosure_new (G_CALLBACK (test_c_bar),
NULL, NULL));
}
static GType
test_c_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo type_info = {
sizeof(TestCClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) test_c_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(TestCClass),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
type = g_type_register_static (TEST_TYPE_B, "TestC",
&type_info, 0);
}
return type;
}
int
main (int argc, char **argv)
{
GObject *self;
g_type_init();
self = g_object_new(TEST_TYPE_A, NULL);
g_print("*** emiting foo on a TestA instance (expect chain A->I)\n");
g_signal_emit(self, foo_signal_id, 0);
g_print("*** emiting bar on a TestA instance\n");
g_signal_emit(self, bar_signal_id, 0);
g_object_unref(self);
g_print("\n");
self = g_object_new(TEST_TYPE_B, NULL);
g_print("*** emiting foo on a TestB instance (expect chain B->A->I)\n");
g_signal_emit(self, foo_signal_id, 0);
g_print("*** emiting bar on a TestB instance (expect chain B->A)\n");
g_signal_emit(self, bar_signal_id, 0);
g_object_unref(self);
g_print("\n");
self = g_object_new(TEST_TYPE_C, NULL);
g_print("*** emiting foo on a TestC instance (expect chain C->B->A->I)\n");
g_signal_emit(self, foo_signal_id, 0);
g_print("*** emiting bar on a TestC instance (expect chain C->B->A)\n");
g_signal_emit(self, bar_signal_id, 0);
g_object_unref(self);
return 0;
}