1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 2001 Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General
15 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 #include <glib-object.h>
23 #define G_LOG_DOMAIN "TestObject"
25 /* --- TestIface --- */
26 #define TEST_TYPE_IFACE (test_iface_get_type ())
27 #define TEST_IFACE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TEST_TYPE_IFACE, TestIface))
28 #define TEST_IS_IFACE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TEST_TYPE_IFACE))
29 #define TEST_IFACE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE, TestIfaceClass))
30 typedef struct _TestIface TestIface;
31 typedef struct _TestIfaceClass TestIfaceClass;
32 struct _TestIfaceClass
34 GTypeInterface base_iface;
35 void (*print_string) (TestIface *tiobj,
38 static void iface_base_init (TestIfaceClass *iface);
39 static void iface_base_finalize (TestIfaceClass *iface);
40 static void print_foo (TestIface *tiobj,
43 test_iface_get_type (void)
45 static GType test_iface_type = 0;
49 const GTypeInfo test_iface_info =
51 sizeof (TestIfaceClass),
52 (GBaseInitFunc) iface_base_init, /* base_init */
53 (GBaseFinalizeFunc) iface_base_finalize, /* base_finalize */
63 test_iface_type = g_type_register_static (G_TYPE_INTERFACE, "TestIface", &test_iface_info, 0);
64 g_type_interface_add_prerequisite (test_iface_type, G_TYPE_OBJECT);
67 return test_iface_type;
69 static guint iface_base_init_count = 0;
71 iface_base_init (TestIfaceClass *iface)
73 iface_base_init_count++;
74 if (iface_base_init_count == 1)
76 /* add signals here */
80 iface_base_finalize (TestIfaceClass *iface)
82 iface_base_init_count--;
83 if (iface_base_init_count == 0)
85 /* destroy signals here */
89 print_foo (TestIface *tiobj,
94 g_test_message ("Iface-FOO: \"%s\" from %p", string, tiobj);
97 test_object_test_iface_init (gpointer giface,
100 TestIfaceClass *iface = giface;
102 g_assert (iface_data == GUINT_TO_POINTER (42));
103 g_assert_cmpint (G_TYPE_FROM_INTERFACE (iface), ==, TEST_TYPE_IFACE);
105 /* assert iface_base_init() was already called */
106 g_assert_cmpuint (iface_base_init_count, >, 0);
108 /* initialize stuff */
109 iface->print_string = print_foo;
112 iface_print_string (TestIface *tiobj,
115 TestIfaceClass *iface;
117 g_return_if_fail (TEST_IS_IFACE (tiobj));
118 g_return_if_fail (G_IS_OBJECT (tiobj)); /* ensured through prerequisite */
120 iface = TEST_IFACE_GET_CLASS (tiobj);
121 g_object_ref (tiobj);
122 iface->print_string (tiobj, string);
123 g_object_unref (tiobj);
127 /* --- TestObject --- */
128 #define TEST_TYPE_OBJECT (test_object_get_type ())
129 #define TEST_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), TEST_TYPE_OBJECT, TestObject))
130 #define TEST_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TEST_TYPE_OBJECT, TestObjectClass))
131 #define TEST_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), TEST_TYPE_OBJECT))
132 #define TEST_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TEST_TYPE_OBJECT))
133 #define TEST_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TEST_TYPE_OBJECT, TestObjectClass))
134 #define TEST_OBJECT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), TEST_TYPE_OBJECT, TestObjectPrivate))
135 typedef struct _TestObject TestObject;
136 typedef struct _TestObjectClass TestObjectClass;
137 typedef struct _TestObjectPrivate TestObjectPrivate;
140 GObject parent_instance;
142 struct _TestObjectClass
144 GObjectClass parent_class;
146 gchar* (*test_signal) (TestObject *tobject,
147 TestIface *iface_object,
150 struct _TestObjectPrivate
155 static void test_object_class_init (TestObjectClass *class);
156 static void test_object_init (TestObject *tobject);
157 static gboolean test_signal_accumulator (GSignalInvocationHint *ihint,
159 const GValue *handler_return,
161 static gchar* test_object_test_signal (TestObject *tobject,
162 TestIface *iface_object,
164 static gint TestObject_private_offset;
165 static inline gpointer
166 test_object_get_instance_private (TestObject *self)
168 return (G_STRUCT_MEMBER_P (self, TestObject_private_offset));
172 test_object_get_type (void)
174 static GType test_object_type = 0;
176 if (!test_object_type)
178 const GTypeInfo test_object_info =
180 sizeof (TestObjectClass),
181 NULL, /* base_init */
182 NULL, /* base_finalize */
183 (GClassInitFunc) test_object_class_init,
184 NULL, /* class_finalize */
185 NULL, /* class_data */
188 (GInstanceInitFunc) test_object_init,
191 GInterfaceInfo iface_info = { test_object_test_iface_init, NULL, GUINT_TO_POINTER (42) };
193 test_object_type = g_type_register_static (G_TYPE_OBJECT, "TestObject", &test_object_info, 0);
194 g_type_add_interface_static (test_object_type, TEST_TYPE_IFACE, &iface_info);
196 TestObject_private_offset =
197 g_type_add_instance_private (test_object_type, sizeof (TestObjectPrivate));
200 return test_object_type;
203 test_object_class_init (TestObjectClass *class)
205 /* GObjectClass *gobject_class = G_OBJECT_CLASS (class); */
206 g_type_class_adjust_private_offset (class, &TestObject_private_offset);
208 class->test_signal = test_object_test_signal;
210 g_signal_new ("test-signal",
211 G_OBJECT_CLASS_TYPE (class),
212 G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST | G_SIGNAL_RUN_CLEANUP,
213 G_STRUCT_OFFSET (TestObjectClass, test_signal),
214 test_signal_accumulator, NULL,
215 g_cclosure_marshal_STRING__OBJECT_POINTER,
216 G_TYPE_STRING, 2, TEST_TYPE_IFACE, G_TYPE_POINTER);
219 test_object_init (TestObject *tobject)
221 TestObjectPrivate *priv = test_object_get_instance_private (tobject);
222 g_assert_nonnull (priv);
224 priv->dummy1 = 54321;
226 /* Check to see if private data initialization in the
227 * instance init function works.
230 test_object_check_private_init (TestObject *tobject)
232 TestObjectPrivate *priv = test_object_get_instance_private (tobject);
234 g_test_message ("private data during initialization: %u == %u", priv->dummy1, 54321);
235 g_assert_cmpint (priv->dummy1, ==, 54321);
238 test_signal_accumulator (GSignalInvocationHint *ihint,
240 const GValue *handler_return,
243 const gchar *accu_string = g_value_get_string (return_accu);
244 const gchar *new_string = g_value_get_string (handler_return);
245 gchar *result_string;
248 result_string = g_strconcat (accu_string, new_string, NULL);
250 result_string = g_strdup (new_string);
252 result_string = NULL;
254 g_value_take_string (return_accu, result_string);
259 test_object_test_signal (TestObject *tobject,
260 TestIface *iface_object,
263 g_test_message ("::test_signal default_handler called");
265 g_return_val_if_fail (TEST_IS_IFACE (iface_object), NULL);
267 return g_strdup ("<default_handler>");
271 /* --- TestIface for DerivedObject --- */
273 print_bar (TestIface *tiobj,
276 TestIfaceClass *parent_iface;
278 g_return_if_fail (TEST_IS_IFACE (tiobj));
282 g_test_message ("Iface-BAR: \"%s\" from %p", string, tiobj);
284 g_test_message ("chaining: ");
285 parent_iface = g_type_interface_peek_parent (TEST_IFACE_GET_CLASS (tiobj));
286 parent_iface->print_string (tiobj, string);
288 g_assert_null (g_type_interface_peek_parent (parent_iface));
292 derived_object_test_iface_init (gpointer giface,
295 TestIfaceClass *iface = giface;
297 g_assert (iface_data == GUINT_TO_POINTER (87));
298 g_assert (G_TYPE_FROM_INTERFACE (iface) == TEST_TYPE_IFACE);
300 /* assert test_object_test_iface_init() was already called */
301 g_assert (iface->print_string == print_foo);
304 iface->print_string = print_bar;
308 /* --- DerivedObject --- */
309 #define DERIVED_TYPE_OBJECT (derived_object_get_type ())
310 #define DERIVED_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), DERIVED_TYPE_OBJECT, DerivedObject))
311 #define DERIVED_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), DERIVED_TYPE_OBJECT, DerivedObjectClass))
312 #define DERIVED_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), DERIVED_TYPE_OBJECT))
313 #define DERIVED_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), DERIVED_TYPE_OBJECT))
314 #define DERIVED_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), DERIVED_TYPE_OBJECT, DerivedObjectClass))
315 #define DERIVED_OBJECT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DERIVED_TYPE_OBJECT, DerivedObjectPrivate))
316 typedef struct _DerivedObject DerivedObject;
317 typedef struct _TestObjectClass DerivedObjectClass;
318 typedef struct _DerivedObjectPrivate DerivedObjectPrivate;
319 struct _DerivedObject
321 TestObject parent_instance;
325 struct _DerivedObjectPrivate
329 static void derived_object_class_init (DerivedObjectClass *class);
330 static void derived_object_init (DerivedObject *dobject);
331 static gint DerivedObject_private_offset;
332 static inline gpointer
333 derived_object_get_instance_private (DerivedObject *self)
335 return (G_STRUCT_MEMBER_P (self, DerivedObject_private_offset));
338 derived_object_get_type (void)
340 static GType derived_object_type = 0;
342 if (!derived_object_type)
344 const GTypeInfo derived_object_info =
346 sizeof (DerivedObjectClass),
347 NULL, /* base_init */
348 NULL, /* base_finalize */
349 (GClassInitFunc) derived_object_class_init,
350 NULL, /* class_finalize */
351 NULL, /* class_data */
352 sizeof (DerivedObject),
354 (GInstanceInitFunc) derived_object_init,
357 GInterfaceInfo iface_info = { derived_object_test_iface_init, NULL, GUINT_TO_POINTER (87) };
359 derived_object_type = g_type_register_static (TEST_TYPE_OBJECT, "DerivedObject", &derived_object_info, 0);
360 g_type_add_interface_static (derived_object_type, TEST_TYPE_IFACE, &iface_info);
361 DerivedObject_private_offset =
362 g_type_add_instance_private (derived_object_type, sizeof (DerivedObjectPrivate));
365 return derived_object_type;
368 derived_object_class_init (DerivedObjectClass *class)
370 g_type_class_adjust_private_offset (class, &DerivedObject_private_offset);
373 derived_object_init (DerivedObject *dobject)
375 TestObjectPrivate *test_priv;
376 DerivedObjectPrivate *derived_priv;
378 derived_priv = derived_object_get_instance_private (dobject);
379 g_assert_nonnull (derived_priv);
381 test_priv = test_object_get_instance_private (TEST_OBJECT (dobject));
382 g_assert_nonnull (test_priv);
386 test_gobject_basics (void)
388 GTypeInfo info = { 0, };
389 GTypeFundamentalInfo finfo = { 0, };
392 DerivedObject *dobject;
393 TestObjectPrivate *priv;
394 gchar *string = NULL;
396 g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) |
397 G_LOG_LEVEL_WARNING |
398 G_LOG_LEVEL_CRITICAL);
400 /* test new fundamentals */
401 g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST) == g_type_fundamental_next ());
402 type = g_type_register_fundamental (g_type_fundamental_next (), "FooShadow1", &info, &finfo, 0);
403 g_assert (type == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST));
404 g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1) == g_type_fundamental_next ());
405 type = g_type_register_fundamental (g_type_fundamental_next (), "FooShadow2", &info, &finfo, 0);
406 g_assert (type == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1));
407 g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 2) == g_type_fundamental_next ());
408 g_assert (g_type_from_name ("FooShadow1") == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST));
409 g_assert (g_type_from_name ("FooShadow2") == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1));
411 /* to test past class initialization interface setups, create the class here */
412 g_type_class_ref (TEST_TYPE_OBJECT);
414 dobject = g_object_new (DERIVED_TYPE_OBJECT, NULL);
415 test_object_check_private_init (TEST_OBJECT (dobject));
417 sigarg = g_object_new (TEST_TYPE_OBJECT, NULL);
419 g_test_message ("MAIN: emit test-signal:");
420 g_signal_emit_by_name (dobject, "test-signal", sigarg, NULL, &string);
421 g_test_message ("signal return: \"%s\"", string);
422 g_assert_cmpstr (string, ==, "<default_handler><default_handler><default_handler>");
425 g_test_message ("MAIN: call iface print-string on test and derived object:");
426 iface_print_string (TEST_IFACE (sigarg), "iface-string-from-test-type");
427 iface_print_string (TEST_IFACE (dobject), "iface-string-from-derived-type");
429 priv = test_object_get_instance_private (TEST_OBJECT (dobject));
430 g_test_message ("private data after initialization: %u == %u", priv->dummy1, 54321);
431 g_assert_cmpint (priv->dummy1, ==, 54321);
433 g_object_unref (sigarg);
434 g_object_unref (dobject);
438 main (int argc, char *argv[])
440 g_test_init (&argc, &argv, NULL);
442 g_test_add_func ("/gobject/basics", test_gobject_basics);
444 return g_test_run ();