tests/refcount/properties4.c

   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
  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
  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
  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
  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
 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
 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
 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 }