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 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, write to the
16 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
17 * Boston, MA 02111-1307, USA.
23 #define G_LOG_DOMAIN "TestObject"
24 #include <glib-object.h>
26 /* --- TestIface --- */
27 #define TEST_TYPE_IFACE (test_iface_get_type ())
28 #define TEST_IFACE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TEST_TYPE_IFACE, TestIface))
29 #define TEST_IS_IFACE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TEST_TYPE_IFACE))
30 #define TEST_IFACE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), TEST_TYPE_IFACE, TestIfaceClass))
31 typedef struct _TestIface TestIface;
32 typedef struct _TestIfaceClass TestIfaceClass;
33 struct _TestIfaceClass
35 GTypeInterface base_iface;
36 void (*print_string) (TestIface *tiobj,
39 static void iface_base_init (TestIfaceClass *iface);
40 static void iface_base_finalize (TestIfaceClass *iface);
41 static void print_foo (TestIface *tiobj,
44 test_iface_get_type (void)
46 static GType test_iface_type = 0;
50 const GTypeInfo test_iface_info =
52 sizeof (TestIfaceClass),
53 (GBaseInitFunc) iface_base_init, /* base_init */
54 (GBaseFinalizeFunc) iface_base_finalize, /* base_finalize */
57 test_iface_type = g_type_register_static (G_TYPE_INTERFACE, "TestIface", &test_iface_info, 0);
58 g_type_interface_add_prerequisite (test_iface_type, G_TYPE_OBJECT);
61 return test_iface_type;
63 static guint iface_base_init_count = 0;
65 iface_base_init (TestIfaceClass *iface)
67 iface_base_init_count++;
68 if (iface_base_init_count == 1)
70 /* add signals here */
74 iface_base_finalize (TestIfaceClass *iface)
76 iface_base_init_count--;
77 if (iface_base_init_count == 0)
79 /* destroy signals here */
83 print_foo (TestIface *tiobj,
88 g_print ("Iface-FOO: \"%s\" from %p\n", string, tiobj);
91 test_object_test_iface_init (gpointer giface,
94 TestIfaceClass *iface = giface;
96 g_assert (iface_data == GUINT_TO_POINTER (42));
98 g_assert (G_TYPE_FROM_INTERFACE (iface) == TEST_TYPE_IFACE);
100 /* assert iface_base_init() was already called */
101 g_assert (iface_base_init_count > 0);
103 /* initialize stuff */
104 iface->print_string = print_foo;
107 iface_print_string (TestIface *tiobj,
110 TestIfaceClass *iface;
112 g_return_if_fail (TEST_IS_IFACE (tiobj));
113 g_return_if_fail (G_IS_OBJECT (tiobj)); /* ensured through prerequisite */
115 iface = TEST_IFACE_GET_CLASS (tiobj);
116 g_object_ref (tiobj);
117 iface->print_string (tiobj, string);
118 g_object_unref (tiobj);
122 /* --- TestObject --- */
123 #define TEST_TYPE_OBJECT (test_object_get_type ())
124 #define TEST_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), TEST_TYPE_OBJECT, TestObject))
125 #define TEST_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TEST_TYPE_OBJECT, TestObjectClass))
126 #define TEST_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), TEST_TYPE_OBJECT))
127 #define TEST_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TEST_TYPE_OBJECT))
128 #define TEST_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TEST_TYPE_OBJECT, TestObjectClass))
129 #define TEST_OBJECT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), TEST_TYPE_OBJECT, TestObjectPrivate))
130 typedef struct _TestObject TestObject;
131 typedef struct _TestObjectClass TestObjectClass;
132 typedef struct _TestObjectPrivate TestObjectPrivate;
135 GObject parent_instance;
137 struct _TestObjectClass
139 GObjectClass parent_class;
141 gchar* (*test_signal) (TestObject *tobject,
142 TestIface *iface_object,
145 struct _TestObjectPrivate
150 static void test_object_class_init (TestObjectClass *class);
151 static void test_object_init (TestObject *tobject);
152 static gboolean test_signal_accumulator (GSignalInvocationHint *ihint,
154 const GValue *handler_return,
156 static gchar* test_object_test_signal (TestObject *tobject,
157 TestIface *iface_object,
160 test_object_get_type (void)
162 static GType test_object_type = 0;
164 if (!test_object_type)
166 const GTypeInfo test_object_info =
168 sizeof (TestObjectClass),
169 NULL, /* base_init */
170 NULL, /* base_finalize */
171 (GClassInitFunc) test_object_class_init,
172 NULL, /* class_finalize */
173 NULL, /* class_data */
176 (GInstanceInitFunc) test_object_init,
178 GInterfaceInfo iface_info = { test_object_test_iface_init, NULL, GUINT_TO_POINTER (42) };
180 test_object_type = g_type_register_static (G_TYPE_OBJECT, "TestObject", &test_object_info, 0);
181 g_type_add_interface_static (test_object_type, TEST_TYPE_IFACE, &iface_info);
184 return test_object_type;
187 test_object_class_init (TestObjectClass *class)
189 /* GObjectClass *gobject_class = G_OBJECT_CLASS (class); */
191 class->test_signal = test_object_test_signal;
193 g_signal_new ("test-signal",
194 G_OBJECT_CLASS_TYPE (class),
195 G_SIGNAL_RUN_FIRST | G_SIGNAL_RUN_LAST | G_SIGNAL_RUN_CLEANUP,
196 G_STRUCT_OFFSET (TestObjectClass, test_signal),
197 test_signal_accumulator, NULL,
198 g_cclosure_marshal_STRING__OBJECT_POINTER,
199 G_TYPE_STRING, 2, TEST_TYPE_IFACE, G_TYPE_POINTER);
201 g_type_class_add_private (class, sizeof (TestObjectPrivate));
204 test_object_init (TestObject *tobject)
206 TestObjectPrivate *priv;
208 priv = TEST_OBJECT_GET_PRIVATE (tobject);
211 g_assert ((gchar *)priv >= (gchar *)tobject + sizeof (TestObject));
213 priv->dummy1 = 54321;
215 /* Check to see if private data initialization in the
216 * instance init function works.
219 test_object_check_private_init (TestObject *tobject)
221 TestObjectPrivate *priv;
223 priv = TEST_OBJECT_GET_PRIVATE (tobject);
225 g_print ("private data during initialization: %u == %u\n", priv->dummy1, 54321);
226 g_assert (priv->dummy1 == 54321);
229 test_signal_accumulator (GSignalInvocationHint *ihint,
231 const GValue *handler_return,
234 const gchar *accu_string = g_value_get_string (return_accu);
235 const gchar *new_string = g_value_get_string (handler_return);
236 gchar *result_string;
239 result_string = g_strconcat (accu_string, new_string, NULL);
241 result_string = g_strdup (new_string);
243 result_string = NULL;
245 g_value_take_string (return_accu, result_string);
250 test_object_test_signal (TestObject *tobject,
251 TestIface *iface_object,
254 g_message ("::test_signal default_handler called");
256 g_return_val_if_fail (TEST_IS_IFACE (iface_object), NULL);
258 return g_strdup ("<default_handler>");
262 /* --- TestIface for DerivedObject --- */
264 print_bar (TestIface *tiobj,
267 TestIfaceClass *parent_iface;
269 g_return_if_fail (TEST_IS_IFACE (tiobj));
273 g_print ("Iface-BAR: \"%s\" from %p\n", string, tiobj);
275 g_print ("chaining: ");
276 parent_iface = g_type_interface_peek_parent (TEST_IFACE_GET_CLASS (tiobj));
277 parent_iface->print_string (tiobj, string);
279 g_assert (g_type_interface_peek_parent (parent_iface) == NULL);
283 derived_object_test_iface_init (gpointer giface,
286 TestIfaceClass *iface = giface;
288 g_assert (iface_data == GUINT_TO_POINTER (87));
290 g_assert (G_TYPE_FROM_INTERFACE (iface) == TEST_TYPE_IFACE);
292 /* assert test_object_test_iface_init() was already called */
293 g_assert (iface->print_string == print_foo);
296 iface->print_string = print_bar;
300 /* --- DerivedObject --- */
301 #define DERIVED_TYPE_OBJECT (derived_object_get_type ())
302 #define DERIVED_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), DERIVED_TYPE_OBJECT, DerivedObject))
303 #define DERIVED_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), DERIVED_TYPE_OBJECT, DerivedObjectClass))
304 #define DERIVED_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), DERIVED_TYPE_OBJECT))
305 #define DERIVED_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), DERIVED_TYPE_OBJECT))
306 #define DERIVED_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), DERIVED_TYPE_OBJECT, DerivedObjectClass))
307 #define DERIVED_OBJECT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), DERIVED_TYPE_OBJECT, DerivedObjectPrivate))
308 typedef struct _DerivedObject DerivedObject;
309 typedef struct _TestObjectClass DerivedObjectClass;
310 typedef struct _DerivedObjectPrivate DerivedObjectPrivate;
311 struct _DerivedObject
313 TestObject parent_instance;
317 struct _DerivedObjectPrivate
321 static void derived_object_class_init (DerivedObjectClass *class);
322 static void derived_object_init (DerivedObject *dobject);
324 derived_object_get_type (void)
326 static GType derived_object_type = 0;
328 if (!derived_object_type)
330 const GTypeInfo derived_object_info =
332 sizeof (DerivedObjectClass),
333 NULL, /* base_init */
334 NULL, /* base_finalize */
335 (GClassInitFunc) derived_object_class_init,
336 NULL, /* class_finalize */
337 NULL, /* class_data */
338 sizeof (DerivedObject),
340 (GInstanceInitFunc) derived_object_init,
342 GInterfaceInfo iface_info = { derived_object_test_iface_init, NULL, GUINT_TO_POINTER (87) };
344 derived_object_type = g_type_register_static (TEST_TYPE_OBJECT, "DerivedObject", &derived_object_info, 0);
345 g_type_add_interface_static (derived_object_type, TEST_TYPE_IFACE, &iface_info);
348 return derived_object_type;
351 derived_object_class_init (DerivedObjectClass *class)
353 g_type_class_add_private (class, sizeof (DerivedObjectPrivate));
356 derived_object_init (DerivedObject *dobject)
358 TestObjectPrivate *test_priv;
359 DerivedObjectPrivate *derived_priv;
361 derived_priv = DERIVED_OBJECT_GET_PRIVATE (dobject);
363 g_assert (derived_priv);
364 g_assert ((gchar *)derived_priv >= (gchar *)TEST_OBJECT_GET_PRIVATE (dobject) + sizeof (TestObjectPrivate));
366 test_priv = TEST_OBJECT_GET_PRIVATE (dobject);
368 g_assert (test_priv);
369 g_assert ((gchar *)test_priv >= (gchar *)dobject + sizeof (TestObject));
378 GTypeInfo info = { 0, };
379 GTypeFundamentalInfo finfo = { 0, };
382 DerivedObject *dobject;
383 TestObjectPrivate *priv;
384 gchar *string = NULL;
386 g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) |
387 G_LOG_LEVEL_WARNING |
388 G_LOG_LEVEL_CRITICAL);
389 g_type_init_with_debug_flags (G_TYPE_DEBUG_OBJECTS | G_TYPE_DEBUG_SIGNALS);
391 /* test new fundamentals */
392 g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST) == g_type_fundamental_next ());
393 type = g_type_register_fundamental (g_type_fundamental_next (), "FooShadow1", &info, &finfo, 0);
394 g_assert (type == G_TYPE_RESERVED_USER_FIRST);
395 g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1) == g_type_fundamental_next ());
396 type = g_type_register_fundamental (g_type_fundamental_next (), "FooShadow2", &info, &finfo, 0);
397 g_assert (type == G_TYPE_RESERVED_USER_FIRST + 1);
398 g_assert (G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 2) == g_type_fundamental_next ());
399 g_assert (g_type_from_name ("FooShadow1") == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST));
400 g_assert (g_type_from_name ("FooShadow2") == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST + 1));
402 /* to test past class initialization interface setups, create the class here */
403 g_type_class_ref (TEST_TYPE_OBJECT);
405 dobject = g_object_new (DERIVED_TYPE_OBJECT, NULL);
406 test_object_check_private_init (TEST_OBJECT (dobject));
408 sigarg = g_object_new (TEST_TYPE_OBJECT, NULL);
410 g_print ("MAIN: emit test-signal:\n");
411 g_signal_emit_by_name (dobject, "test-signal", sigarg, NULL, &string);
412 g_message ("signal return: \"%s\"", string);
413 g_assert (strcmp (string, "<default_handler><default_handler>") == 0);
416 g_print ("MAIN: call iface print-string on test and derived object:\n");
417 iface_print_string (TEST_IFACE (sigarg), "iface-string-from-test-type");
418 iface_print_string (TEST_IFACE (dobject), "iface-string-from-derived-type");
420 priv = TEST_OBJECT_GET_PRIVATE (dobject);
421 g_print ("private data after initialization: %u == %u\n", priv->dummy1, 54321);
422 g_assert (priv->dummy1 == 54321);
424 g_object_unref (sigarg);
425 g_object_unref (dobject);
427 g_message ("%s done", argv[0]);