Pileus Git - ~andy/gtk/blob - gtk/gtksearchengine.c

   1 /*
   2  * Copyright (C) 2005 Novell, Inc.
   3  *
   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.
   8  *
   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.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  *
  18  * Author: Anders Carlsson <andersca@imendio.com>
  19  *
  20  * Based on nautilus-search-engine.c
  21  */
  22
  23 #include "config.h"
  24 #include "gtksearchengine.h"
  25 #include "gtksearchenginesimple.h"
  26 #include "gtksearchenginetracker.h"
  27 #include "gtksearchenginequartz.h"
  28
  29 #include <gdk/gdk.h> /* for GDK_WINDOWING_QUARTZ */
  30
  31 #ifndef G_OS_WIN32  /* No tracker on Windows */
  32 #define HAVE_TRACKER 1
  33 #endif
  34
  35 enum
  36 {
  37   HITS_ADDED,
  38   HITS_SUBTRACTED,
  39   FINISHED,
  40   ERROR,
  41   LAST_SIGNAL
  42 };
  43
  44 static guint signals[LAST_SIGNAL];
  45
  46 G_DEFINE_ABSTRACT_TYPE (GtkSearchEngine, _gtk_search_engine, G_TYPE_OBJECT);
  47
  48 static void
  49 finalize (GObject *object)
  50 {
  51   G_OBJECT_CLASS (_gtk_search_engine_parent_class)->finalize (object);
  52 }
  53
  54 static void
  55 _gtk_search_engine_class_init (GtkSearchEngineClass *class)
  56 {
  57   GObjectClass *gobject_class;
  58
  59   gobject_class = G_OBJECT_CLASS (class);
  60   gobject_class->finalize = finalize;
  61
  62   signals[HITS_ADDED] =
  63     g_signal_new ("hits-added",
  64                   G_TYPE_FROM_CLASS (class),
  65                   G_SIGNAL_RUN_LAST,
  66                   G_STRUCT_OFFSET (GtkSearchEngineClass, hits_added),
  67                   NULL, NULL,
  68                   g_cclosure_marshal_VOID__POINTER,
  69                   G_TYPE_NONE, 1,
  70                   G_TYPE_POINTER);
  71
  72   signals[HITS_SUBTRACTED] =
  73     g_signal_new ("hits-subtracted",
  74                   G_TYPE_FROM_CLASS (class),
  75                   G_SIGNAL_RUN_LAST,
  76                   G_STRUCT_OFFSET (GtkSearchEngineClass, hits_subtracted),
  77                   NULL, NULL,
  78                   g_cclosure_marshal_VOID__POINTER,
  79                   G_TYPE_NONE, 1,
  80                   G_TYPE_POINTER);
  81
  82   signals[FINISHED] =
  83     g_signal_new ("finished",
  84                   G_TYPE_FROM_CLASS (class),
  85                   G_SIGNAL_RUN_LAST,
  86                   G_STRUCT_OFFSET (GtkSearchEngineClass, finished),
  87                   NULL, NULL,
  88                   g_cclosure_marshal_VOID__VOID,
  89                   G_TYPE_NONE, 0);
  90
  91   signals[ERROR] =
  92     g_signal_new ("error",
  93                   G_TYPE_FROM_CLASS (class),
  94                   G_SIGNAL_RUN_LAST,
  95                   G_STRUCT_OFFSET (GtkSearchEngineClass, error),
  96                   NULL, NULL,
  97                   g_cclosure_marshal_VOID__STRING,
  98                   G_TYPE_NONE, 1,
  99                   G_TYPE_STRING);
 100 }
 101
 102 static void
 103 _gtk_search_engine_init (GtkSearchEngine *engine)
 104 {
 105 }
 106
 107 GtkSearchEngine *
 108 _gtk_search_engine_new (void)
 109 {
 110   GtkSearchEngine *engine = NULL;
 111
 112 #ifdef HAVE_TRACKER
 113   engine = _gtk_search_engine_tracker_new ();
 114   if (engine)
 115     return engine;
 116 #endif
 117
 118 #ifdef GDK_WINDOWING_QUARTZ
 119   engine = _gtk_search_engine_quartz_new ();
 120   if (engine)
 121     return engine;
 122 #endif
 123
 124   if (g_thread_supported ())
 125     engine = _gtk_search_engine_simple_new ();
 126
 127   return engine;
 128 }
 129
 130 void
 131 _gtk_search_engine_set_query (GtkSearchEngine *engine,
 132                               GtkQuery        *query)
 133 {
 134   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 135   g_return_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->set_query != NULL);
 136
 137   GTK_SEARCH_ENGINE_GET_CLASS (engine)->set_query (engine, query);
 138 }
 139
 140 void
 141 _gtk_search_engine_start (GtkSearchEngine *engine)
 142 {
 143   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 144   g_return_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->start != NULL);
 145
 146   GTK_SEARCH_ENGINE_GET_CLASS (engine)->start (engine);
 147 }
 148
 149 void
 150 _gtk_search_engine_stop (GtkSearchEngine *engine)
 151 {
 152   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 153   g_return_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->stop != NULL);
 154
 155   GTK_SEARCH_ENGINE_GET_CLASS (engine)->stop (engine);
 156 }
 157
 158 gboolean
 159 _gtk_search_engine_is_indexed (GtkSearchEngine *engine)
 160 {
 161   g_return_val_if_fail (GTK_IS_SEARCH_ENGINE (engine), FALSE);
 162   g_return_val_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->is_indexed != NULL, FALSE);
 163
 164   return GTK_SEARCH_ENGINE_GET_CLASS (engine)->is_indexed (engine);
 165 }
 166
 167 void
 168 _gtk_search_engine_hits_added (GtkSearchEngine *engine,
 169                                GList           *hits)
 170 {
 171   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 172
 173   g_signal_emit (engine, signals[HITS_ADDED], 0, hits);
 174 }
 175
 176
 177 void
 178 _gtk_search_engine_hits_subtracted (GtkSearchEngine *engine,
 179                                     GList           *hits)
 180 {
 181   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 182
 183   g_signal_emit (engine, signals[HITS_SUBTRACTED], 0, hits);
 184 }
 185
 186
 187 void
 188 _gtk_search_engine_finished (GtkSearchEngine *engine)
 189 {
 190   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 191
 192   g_signal_emit (engine, signals[FINISHED], 0);
 193 }
 194
 195 void
 196 _gtk_search_engine_error (GtkSearchEngine *engine,
 197                           const gchar     *error_message)
 198 {
 199   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 200
 201   g_signal_emit (engine, signals[ERROR], 0, error_message);
 202 }