src/ibusobject.c

   1 /* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
   2 /* vim:set et sts=4: */
   3 /* ibus - The Input Bus
   4  * Copyright (C) 2008-2010 Peng Huang <shawn.p.huang@gmail.com>
   5  * Copyright (C) 2008-2010 Red Hat, Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
  20  * USA
  21  */
  22
  23 #include "ibusobject.h"
  24 #include "ibusmarshalers.h"
  25 #include "ibusinternal.h"
  26
  27 #define IBUS_OBJECT_GET_PRIVATE(o)  \
  28    (G_TYPE_INSTANCE_GET_PRIVATE ((o), IBUS_TYPE_OBJECT, IBusObjectPrivate))
  29
  30 enum {
  31     DESTROY,
  32     LAST_SIGNAL,
  33 };
  34
  35 struct _IBusObjectPrivate {
  36     gpointer pad;
  37 };
  38
  39 static guint            object_signals[LAST_SIGNAL] = { 0 };
  40
  41 // #define DEBUG_MEMORY
  42 #ifdef DEBUG_MEMORY
  43 static GHashTable      *_count_table;
  44 static guint            _count = 0;
  45 #endif
  46
  47 /* functions prototype */
  48 static GObject  *ibus_object_constructor    (GType               type,
  49                                              guint               n,
  50                                              GObjectConstructParam
  51                                                                 *args);
  52 static void      ibus_object_dispose        (IBusObject         *obj);
  53 static void      ibus_object_finalize       (IBusObject         *obj);
  54 static void      ibus_object_real_destroy   (IBusObject         *obj);
  55
  56 G_DEFINE_TYPE (IBusObject, ibus_object, G_TYPE_INITIALLY_UNOWNED)
  57
  58 static void
  59 ibus_object_class_init     (IBusObjectClass *class)
  60 {
  61     GObjectClass *gobject_class = G_OBJECT_CLASS (class);
  62
  63     gobject_class->constructor = ibus_object_constructor;
  64     gobject_class->dispose = (GObjectFinalizeFunc) ibus_object_dispose;
  65     gobject_class->finalize = (GObjectFinalizeFunc) ibus_object_finalize;
  66
  67     class->destroy = ibus_object_real_destroy;
  68
  69     /* install signals */
  70     /**
  71      * IBusObject::destroy:
  72      * @object: An IBusObject.
  73      *
  74      * Destroy and free an IBusObject
  75      *
  76      * See also:  ibus_object_destroy().
  77      *
  78      * <note><para>Argument @user_data is ignored in this function.</para></note>
  79      */
  80     object_signals[DESTROY] =
  81         g_signal_new (I_("destroy"),
  82             G_TYPE_FROM_CLASS (gobject_class),
  83             G_SIGNAL_RUN_LAST,
  84             G_STRUCT_OFFSET (IBusObjectClass, destroy),
  85             NULL, NULL,
  86             _ibus_marshal_VOID__VOID,
  87             G_TYPE_NONE, 0);
  88
  89     g_type_class_add_private (class, sizeof (IBusObjectPrivate));
  90
  91 #ifdef DEBUG_MEMORY
  92     _count_table = g_hash_table_new (g_direct_hash, g_direct_equal);
  93 #endif
  94 }
  95
  96 static void
  97 ibus_object_init (IBusObject *obj)
  98 {
  99     obj->flags = 0;
 100     obj->priv = IBUS_OBJECT_GET_PRIVATE (obj);
 101 }
 102
 103
 104 static GObject *
 105 ibus_object_constructor (GType                   type,
 106                          guint                   n,
 107                          GObjectConstructParam  *args)
 108 {
 109     GObject *object;
 110
 111     object = G_OBJECT_CLASS (ibus_object_parent_class)->constructor (type, n ,args);
 112
 113 #ifdef DEBUG_MEMORY
 114     if (object != NULL) {
 115         guint count;
 116         _count ++;
 117
 118         count = GPOINTER_TO_UINT (g_hash_table_lookup (_count_table, (gpointer) type));
 119         g_hash_table_replace (_count_table, (gpointer) type, GUINT_TO_POINTER (++count));
 120
 121         g_debug ("new %s, count = %d, all = %d", g_type_name (type), count, _count);
 122     }
 123 #endif
 124
 125     return object;
 126 }
 127
 128
 129 static void
 130 ibus_object_dispose (IBusObject *obj)
 131 {
 132     if (! (IBUS_OBJECT_FLAGS (obj) & IBUS_IN_DESTRUCTION)) {
 133         IBUS_OBJECT_SET_FLAGS (obj, IBUS_IN_DESTRUCTION);
 134         if (! (IBUS_OBJECT_FLAGS (obj) & IBUS_DESTROYED)) {
 135             g_signal_emit (obj, object_signals[DESTROY], 0);
 136             IBUS_OBJECT_SET_FLAGS (obj, IBUS_DESTROYED);
 137         }
 138         IBUS_OBJECT_UNSET_FLAGS (obj, IBUS_IN_DESTRUCTION);
 139     }
 140
 141     G_OBJECT_CLASS(ibus_object_parent_class)->dispose (G_OBJECT (obj));
 142 }
 143
 144 static void
 145 ibus_object_finalize (IBusObject *obj)
 146 {
 147 #ifdef DEBUG_MEMORY
 148     guint count;
 149
 150     _count --;
 151     count = GPOINTER_TO_UINT (g_hash_table_lookup (_count_table, (gpointer)G_OBJECT_TYPE (obj)));
 152     g_hash_table_replace (_count_table, (gpointer)G_OBJECT_TYPE (obj), GUINT_TO_POINTER (--count));
 153     g_debug ("Finalize %s, count = %d, all = %d", G_OBJECT_TYPE_NAME (obj), count, _count);
 154 #endif
 155
 156     G_OBJECT_CLASS(ibus_object_parent_class)->finalize (G_OBJECT (obj));
 157 }
 158
 159 static void
 160 ibus_object_real_destroy (IBusObject *obj)
 161 {
 162     g_signal_handlers_destroy (obj);
 163 }
 164
 165 /**
 166  * ibus_object_new:
 167  *
 168  * Creates a new instance of an #IBusObject.
 169  *
 170  * Returns: a new instance of #IBusObject.
 171  */
 172 IBusObject *
 173 ibus_object_new (void)
 174 {
 175     GObject *object = g_object_new (IBUS_TYPE_OBJECT, NULL);
 176     return IBUS_OBJECT (object);
 177 }
 178
 179 void
 180 ibus_object_destroy (IBusObject *obj)
 181 {
 182     g_return_if_fail (IBUS_IS_OBJECT (obj));
 183
 184     if (! (IBUS_OBJECT_FLAGS (obj) & IBUS_IN_DESTRUCTION)) {
 185         g_object_run_dispose (G_OBJECT (obj));
 186     }
 187 }