src/mm-hit-collection.c

   1 /* MManager - a Desktop wide manager for multimedia applications.
   2  *
   3  * Copyright (C) 2008 Cosimo Cecchi <cosimoc@gnome.org>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <glib.h>
  22 #include <glib-object.h>
  23
  24 #include "mm-hit-collection.h"
  25
  26 #define MM_HIT_COLLECTION_GET_PRIVATE(o) \
  27    (G_TYPE_INSTANCE_GET_PRIVATE ((o), MM_TYPE_HIT_COLLECTION, MMHitCollectionDetails))
  28
  29 G_DEFINE_TYPE (MMHitCollection, mm_hit_collection, G_TYPE_OBJECT);
  30
  31 struct _MMHitCollectionDetails {
  32   GPtrArray *hits;
  33   guint current_offset;
  34 };
  35
  36 static void
  37 unref_hit (gpointer hit,
  38            gpointer unused)
  39 {
  40   g_object_unref (hit);
  41 }
  42
  43 static void
  44 mm_hit_collection_finalize (GObject *o)
  45 {
  46   MMHitCollection *c = MM_HIT_COLLECTION (o);
  47
  48   /* unref all the hits first */
  49   g_ptr_array_foreach (c->details->hits, unref_hit, NULL);
  50   g_ptr_array_free (c->details->hits, FALSE);
  51
  52   G_OBJECT_CLASS (mm_hit_collection_parent_class)->finalize (o);
  53 }
  54
  55 static void
  56 mm_hit_collection_class_init (MMHitCollectionClass *klass)
  57 {
  58   G_OBJECT_CLASS (klass)->finalize = mm_hit_collection_finalize;
  59
  60   g_type_class_add_private (klass, sizeof (MMHitCollectionDetails));
  61 }
  62
  63 static void
  64 mm_hit_collection_init (MMHitCollection *c)
  65 {
  66   MMHitCollectionDetails *details = c->details = MM_HIT_COLLECTION_GET_PRIVATE (c);
  67
  68   details->hits = g_ptr_array_new ();
  69   details->current_offset = 0;
  70 }
  71
  72 /* public methods */
  73
  74 MMHitCollection *
  75 mm_hit_collection_new (void)
  76 {
  77   MMHitCollection *c;
  78
  79   c = g_object_new (MM_TYPE_HIT_COLLECTION, NULL);
  80
  81   return c;
  82 }
  83
  84 void
  85 mm_hit_collection_add_hit (MMHitCollection *c,
  86                            MMHit *hit)
  87 {
  88   MMHitCollectionDetails *details = c->details;
  89
  90   g_ptr_array_add (details->hits, g_object_ref (hit));
  91 }
  92
  93 MMHit *
  94 mm_hit_collection_get_next_hit (MMHitCollection *c)
  95 {
  96   MMHitCollectionDetails *details = c->details;
  97   MMHit *hit;
  98
  99   if (details->hits->len == 0 ||
 100       details->current_offset >= details->hits->len) {
 101     /* no hits in this collection or we already got all results */
 102     hit = NULL;
 103   } else {
 104     hit = g_ptr_array_index (details->hits, details->current_offset);
 105     details->current_offset++;
 106   }
 107
 108   return hit;
 109 }