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 "gtksearchenginebeagle.h"
  26 #include "gtksearchenginesimple.h"
  27 #include "gtksearchenginetracker.h"
  28 #include "gtksearchenginequartz.h"
  29
  30 #include <gdk/gdk.h> /* for GDK_WINDOWING_QUARTZ */
  31
  32 #ifndef G_OS_WIN32              /* Beagle and tracker are not ported
  33                                  * to Windows, as far as I know.
  34                                  */
  35
  36 #define HAVE_BEAGLE  1
  37 #define HAVE_TRACKER 1
  38
  39 #endif
  40
  41 enum
  42 {
  43   HITS_ADDED,
  44   HITS_SUBTRACTED,
  45   FINISHED,
  46   ERROR,
  47   LAST_SIGNAL
  48 };
  49
  50 static guint signals[LAST_SIGNAL];
  51
  52 G_DEFINE_ABSTRACT_TYPE (GtkSearchEngine, _gtk_search_engine, G_TYPE_OBJECT);
  53
  54 static void
  55 finalize (GObject *object)
  56 {
  57   G_OBJECT_CLASS (_gtk_search_engine_parent_class)->finalize (object);
  58 }
  59
  60 static void
  61 _gtk_search_engine_class_init (GtkSearchEngineClass *class)
  62 {
  63   GObjectClass *gobject_class;
  64
  65   gobject_class = G_OBJECT_CLASS (class);
  66   gobject_class->finalize = finalize;
  67
  68   signals[HITS_ADDED] =
  69     g_signal_new ("hits-added",
  70                   G_TYPE_FROM_CLASS (class),
  71                   G_SIGNAL_RUN_LAST,
  72                   G_STRUCT_OFFSET (GtkSearchEngineClass, hits_added),
  73                   NULL, NULL,
  74                   g_cclosure_marshal_VOID__POINTER,
  75                   G_TYPE_NONE, 1,
  76                   G_TYPE_POINTER);
  77
  78   signals[HITS_SUBTRACTED] =
  79     g_signal_new ("hits-subtracted",
  80                   G_TYPE_FROM_CLASS (class),
  81                   G_SIGNAL_RUN_LAST,
  82                   G_STRUCT_OFFSET (GtkSearchEngineClass, hits_subtracted),
  83                   NULL, NULL,
  84                   g_cclosure_marshal_VOID__POINTER,
  85                   G_TYPE_NONE, 1,
  86                   G_TYPE_POINTER);
  87
  88   signals[FINISHED] =
  89     g_signal_new ("finished",
  90                   G_TYPE_FROM_CLASS (class),
  91                   G_SIGNAL_RUN_LAST,
  92                   G_STRUCT_OFFSET (GtkSearchEngineClass, finished),
  93                   NULL, NULL,
  94                   g_cclosure_marshal_VOID__VOID,
  95                   G_TYPE_NONE, 0);
  96
  97   signals[ERROR] =
  98     g_signal_new ("error",
  99                   G_TYPE_FROM_CLASS (class),
 100                   G_SIGNAL_RUN_LAST,
 101                   G_STRUCT_OFFSET (GtkSearchEngineClass, error),
 102                   NULL, NULL,
 103                   g_cclosure_marshal_VOID__STRING,
 104                   G_TYPE_NONE, 1,
 105                   G_TYPE_STRING);
 106 }
 107
 108 static void
 109 _gtk_search_engine_init (GtkSearchEngine *engine)
 110 {
 111 }
 112
 113 GtkSearchEngine *
 114 _gtk_search_engine_new (void)
 115 {
 116   GtkSearchEngine *engine = NULL;
 117
 118 #ifdef HAVE_TRACKER
 119   engine = _gtk_search_engine_tracker_new ();
 120   if (engine)
 121     return engine;
 122 #endif
 123
 124 #ifdef HAVE_BEAGLE
 125   engine = _gtk_search_engine_beagle_new ();
 126   if (engine)
 127     return engine;
 128 #endif
 129
 130 #ifdef GDK_WINDOWING_QUARTZ
 131   engine = _gtk_search_engine_quartz_new ();
 132   if (engine)
 133     return engine;
 134 #endif
 135
 136   if (g_thread_supported ())
 137     engine = _gtk_search_engine_simple_new ();
 138
 139   return engine;
 140 }
 141
 142 void
 143 _gtk_search_engine_set_query (GtkSearchEngine *engine,
 144                               GtkQuery        *query)
 145 {
 146   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 147   g_return_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->set_query != NULL);
 148
 149   GTK_SEARCH_ENGINE_GET_CLASS (engine)->set_query (engine, query);
 150 }
 151
 152 void
 153 _gtk_search_engine_start (GtkSearchEngine *engine)
 154 {
 155   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 156   g_return_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->start != NULL);
 157
 158   GTK_SEARCH_ENGINE_GET_CLASS (engine)->start (engine);
 159 }
 160
 161 void
 162 _gtk_search_engine_stop (GtkSearchEngine *engine)
 163 {
 164   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 165   g_return_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->stop != NULL);
 166
 167   GTK_SEARCH_ENGINE_GET_CLASS (engine)->stop (engine);
 168 }
 169
 170 gboolean
 171 _gtk_search_engine_is_indexed (GtkSearchEngine *engine)
 172 {
 173   g_return_val_if_fail (GTK_IS_SEARCH_ENGINE (engine), FALSE);
 174   g_return_val_if_fail (GTK_SEARCH_ENGINE_GET_CLASS (engine)->is_indexed != NULL, FALSE);
 175
 176   return GTK_SEARCH_ENGINE_GET_CLASS (engine)->is_indexed (engine);
 177 }
 178
 179 void
 180 _gtk_search_engine_hits_added (GtkSearchEngine *engine,
 181                                GList           *hits)
 182 {
 183   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 184
 185   g_signal_emit (engine, signals[HITS_ADDED], 0, hits);
 186 }
 187
 188
 189 void
 190 _gtk_search_engine_hits_subtracted (GtkSearchEngine *engine,
 191                                     GList           *hits)
 192 {
 193   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 194
 195   g_signal_emit (engine, signals[HITS_SUBTRACTED], 0, hits);
 196 }
 197
 198
 199 void
 200 _gtk_search_engine_finished (GtkSearchEngine *engine)
 201 {
 202   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 203
 204   g_signal_emit (engine, signals[FINISHED], 0);
 205 }
 206
 207 void
 208 _gtk_search_engine_error (GtkSearchEngine *engine,
 209                           const gchar     *error_message)
 210 {
 211   g_return_if_fail (GTK_IS_SEARCH_ENGINE (engine));
 212
 213   g_signal_emit (engine, signals[ERROR], 0, error_message);
 214 }