libpurple/theme-loader.c

   1 /*
   2  * ThemeLoaders for libpurple
   3  *
   4  * Pidgin is the legal property of its developers, whose names are too numerous
   5  * to list here.  Please refer to the COPYRIGHT file distributed with this
   6  * source distribution.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  21  */
  22
  23 #include "internal.h"
  24 #include "glibcompat.h"
  25 #include "theme-loader.h"
  26
  27 void purple_theme_loader_set_type_string(PurpleThemeLoader *loader, const gchar *type);
  28
  29 /******************************************************************************
  30  * Structs
  31  *****************************************************************************/
  32 typedef struct {
  33         gchar *type;
  34 } PurpleThemeLoaderPrivate;
  35
  36 /******************************************************************************
  37  * Enums
  38  *****************************************************************************/
  39
  40 enum {
  41         PROP_ZERO = 0,
  42         PROP_TYPE,
  43         PROP_LAST
  44 };
  45
  46 /******************************************************************************
  47  * Globals
  48  *****************************************************************************/
  49
  50 static GParamSpec *properties[PROP_LAST];
  51
  52 G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE(PurpleThemeLoader, purple_theme_loader,
  53                 G_TYPE_OBJECT);
  54
  55 /******************************************************************************
  56  * GObject Stuff                                                              *
  57  *****************************************************************************/
  58
  59 static void
  60 purple_theme_loader_get_property(GObject *obj, guint param_id, GValue *value,
  61                                                  GParamSpec *psec)
  62 {
  63         PurpleThemeLoader *theme_loader = PURPLE_THEME_LOADER(obj);
  64
  65         switch (param_id) {
  66                 case PROP_TYPE:
  67                         g_value_set_string(value, purple_theme_loader_get_type_string(theme_loader));
  68                         break;
  69                 default:
  70                         G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, param_id, psec);
  71                         break;
  72         }
  73 }
  74
  75 static void
  76 purple_theme_loader_set_property(GObject *obj, guint param_id, const GValue *value,
  77                                                  GParamSpec *psec)
  78 {
  79         PurpleThemeLoader *loader = PURPLE_THEME_LOADER(obj);
  80
  81         switch (param_id) {
  82                 case PROP_TYPE:
  83                         purple_theme_loader_set_type_string(loader, g_value_get_string(value));
  84                         break;
  85                 default:
  86                         G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, param_id, psec);
  87                         break;
  88         }
  89 }
  90
  91 static gboolean
  92 purple_theme_loader_probe_directory(PurpleThemeLoader *loader, const gchar *dir)
  93 {
  94         const gchar *type = purple_theme_loader_get_type_string(loader);
  95         char *themedir;
  96         gboolean result;
  97
  98         /* Checks for directory as $root/purple/$type */
  99         themedir = g_build_filename(dir, "purple", type, NULL);
 100         result = g_file_test(themedir, G_FILE_TEST_IS_DIR);
 101         g_free(themedir);
 102
 103         return result;
 104 }
 105
 106 static void
 107 purple_theme_loader_init(PurpleThemeLoader *loader)
 108 {
 109 }
 110
 111 static void
 112 purple_theme_loader_finalize(GObject *obj)
 113 {
 114         PurpleThemeLoader *loader = PURPLE_THEME_LOADER(obj);
 115         PurpleThemeLoaderPrivate *priv =
 116                         purple_theme_loader_get_instance_private(loader);
 117
 118         g_free(priv->type);
 119
 120         G_OBJECT_CLASS(purple_theme_loader_parent_class)->finalize(obj);
 121 }
 122
 123 static void
 124 purple_theme_loader_class_init(PurpleThemeLoaderClass *klass)
 125 {
 126         GObjectClass *obj_class = G_OBJECT_CLASS(klass);
 127
 128         obj_class->get_property = purple_theme_loader_get_property;
 129         obj_class->set_property = purple_theme_loader_set_property;
 130         obj_class->finalize = purple_theme_loader_finalize;
 131
 132         /* TYPE STRING (read only) */
 133         properties[PROP_TYPE] = g_param_spec_string("type", "Type",
 134                                     "The string representing the type of the theme",
 135                                     NULL,
 136                                     G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
 137                                     G_PARAM_STATIC_STRINGS);
 138
 139         g_object_class_install_properties(obj_class, PROP_LAST, properties);
 140 }
 141
 142 /*****************************************************************************
 143  * Public API functions
 144  *****************************************************************************/
 145
 146 const gchar *
 147 purple_theme_loader_get_type_string(PurpleThemeLoader *theme_loader)
 148 {
 149         PurpleThemeLoaderPrivate *priv = NULL;
 150
 151         g_return_val_if_fail(PURPLE_IS_THEME_LOADER(theme_loader), NULL);
 152
 153         priv = purple_theme_loader_get_instance_private(theme_loader);
 154         return priv->type;
 155 }
 156
 157 /* < private > */
 158 void
 159 purple_theme_loader_set_type_string(PurpleThemeLoader *loader, const gchar *type)
 160 {
 161         PurpleThemeLoaderPrivate *priv;
 162
 163         g_return_if_fail(PURPLE_IS_THEME_LOADER(loader));
 164
 165         priv = purple_theme_loader_get_instance_private(loader);
 166
 167         g_free(priv->type);
 168         priv->type = g_strdup(type);
 169
 170         g_object_notify_by_pspec(G_OBJECT(loader), properties[PROP_TYPE]);
 171 }
 172
 173 PurpleTheme *
 174 purple_theme_loader_build(PurpleThemeLoader *loader, const gchar *dir)
 175 {
 176         return PURPLE_THEME_LOADER_GET_CLASS(loader)->purple_theme_loader_build(dir);
 177 }
 178
 179 gboolean
 180 purple_theme_loader_probe(PurpleThemeLoader *loader, const gchar *dir)
 181 {
 182         if (PURPLE_THEME_LOADER_GET_CLASS(loader)->probe_directory != NULL)
 183                 return PURPLE_THEME_LOADER_GET_CLASS(loader)->probe_directory(dir);
 184         else
 185                 return purple_theme_loader_probe_directory(loader, dir);
 186 }
 187