1 #include <glib.h>
2 #include <glib-object.h>
3
4 #define MY_TYPE_BADGER (my_badger_get_type ())
5 #define MY_BADGER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), MY_TYPE_BADGER, MyBadger))
6 #define MY_IS_BADGER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MY_TYPE_BADGER))
7 #define MY_BADGER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), MY_TYPE_BADGER, MyBadgerClass))
8 #define MY_IS_BADGER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), MY_TYPE_BADGER))
9 #define MY_BADGER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), MY_TYPE_BADGER, MyBadgerClass))
10
11 enum {
12 PROP_0,
13 PROP_MAMA
14 };
15
16 typedef struct _MyBadger MyBadger;
17 typedef struct _MyBadgerClass MyBadgerClass;
18
19 struct _MyBadger
20 {
21 GObject parent_instance;
22
23 MyBadger * mama;
24 guint mama_notify_count;
25 };
26
27 struct _MyBadgerClass
28 {
29 GObjectClass parent_class;
30 };
31
32 static GType my_badger_get_type (void);
33 G_DEFINE_TYPE (MyBadger, my_badger, G_TYPE_OBJECT)
34
35 static void my_badger_dispose (GObject * object);
36
37 static void my_badger_get_property (GObject *object,
38 guint prop_id,
39 GValue *value,
40 GParamSpec *pspec);
41 static void my_badger_set_property (GObject *object,
42 guint prop_id,
43 const GValue *value,
44 GParamSpec *pspec);
45
46 static void my_badger_mama_notify (GObject *object,
47 GParamSpec *pspec);
48
49 static void
my_badger_class_init(MyBadgerClass * klass)50 my_badger_class_init (MyBadgerClass * klass)
51 {
52 GObjectClass *gobject_class;
53
54 gobject_class = (GObjectClass *) klass;
55
56 gobject_class->dispose = my_badger_dispose;
57
58 gobject_class->get_property = my_badger_get_property;
59 gobject_class->set_property = my_badger_set_property;
60
61 g_object_class_install_property (gobject_class,
62 PROP_MAMA,
63 g_param_spec_object ("mama",
64 NULL,
65 NULL,
66 MY_TYPE_BADGER,
67 G_PARAM_READWRITE));
68 }
69
70 static void
my_badger_init(MyBadger * self)71 my_badger_init (MyBadger * self)
72 {
73 g_signal_connect (self, "notify::mama", G_CALLBACK (my_badger_mama_notify),
74 NULL);
75 }
76
77 static void
my_badger_dispose(GObject * object)78 my_badger_dispose (GObject * object)
79 {
80 MyBadger * self;
81
82 self = MY_BADGER (object);
83
84 if (self->mama != NULL)
85 {
86 g_object_unref (self->mama);
87 self->mama = NULL;
88 }
89
90 G_OBJECT_CLASS (my_badger_parent_class)->dispose (object);
91 }
92
93 static void
my_badger_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)94 my_badger_get_property (GObject *object,
95 guint prop_id,
96 GValue *value,
97 GParamSpec *pspec)
98 {
99 MyBadger *self;
100
101 self = MY_BADGER (object);
102
103 switch (prop_id)
104 {
105 case PROP_MAMA:
106 g_value_set_object (value, self->mama);
107 break;
108 default:
109 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
110 break;
111 }
112 }
113
114 static void
my_badger_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)115 my_badger_set_property (GObject *object,
116 guint prop_id,
117 const GValue *value,
118 GParamSpec *pspec)
119 {
120 MyBadger *self;
121
122 self = MY_BADGER (object);
123
124 switch (prop_id)
125 {
126 case PROP_MAMA:
127 if (self->mama)
128 g_object_unref (self->mama);
129 self->mama = g_value_dup_object (value);
130 if (self->mama)
131 g_object_set (self->mama, "mama", NULL, NULL); /* another notify */
132 break;
133 default:
134 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
135 break;
136 }
137 }
138
139 static void
my_badger_mama_notify(GObject * object,GParamSpec * pspec)140 my_badger_mama_notify (GObject *object,
141 GParamSpec *pspec)
142 {
143 MyBadger *self;
144
145 self = MY_BADGER (object);
146
147 self->mama_notify_count++;
148 }
149
150 int
main(int argc,char ** argv)151 main (int argc, char **argv)
152 {
153 MyBadger * badger1, * badger2;
154 gpointer test;
155
156 g_print ("START: %s\n", argv[0]);
157 g_log_set_always_fatal (G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL | g_log_set_always_fatal (G_LOG_FATAL_MASK));
158
159 badger1 = g_object_new (MY_TYPE_BADGER, NULL);
160 badger2 = g_object_new (MY_TYPE_BADGER, NULL);
161
162 g_object_set (badger1, "mama", badger2, NULL);
163 g_assert_cmpuint (badger1->mama_notify_count, ==, 1);
164 g_assert_cmpuint (badger2->mama_notify_count, ==, 1);
165 g_object_get (badger1, "mama", &test, NULL);
166 g_assert (test == badger2);
167 g_object_unref (test);
168
169 g_object_unref (badger1);
170 g_object_unref (badger2);
171
172 return 0;
173 }
174