/* * Copyright (C) 2005 Marco Pesenti Gritti * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ #include "config.h" #include <glib/gi18n.h> #include <string.h> #include "ev-history.h" enum { HISTORY_CHANGED, N_SIGNALS }; static guint signals[N_SIGNALS] = {0, }; struct _EvHistoryPrivate { GList *links; }; static void ev_history_init (EvHistory *history); static void ev_history_class_init (EvHistoryClass *class); G_DEFINE_TYPE (EvHistory, ev_history, G_TYPE_OBJECT) #define EV_HISTORY_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_HISTORY, EvHistoryPrivate)) static void ev_history_init (EvHistory *history) { history->priv = EV_HISTORY_GET_PRIVATE (history); history->priv->links = NULL; } static void free_links_list (GList *l) { g_list_foreach (l, (GFunc)g_object_unref, NULL); g_list_free (l); } static void ev_history_finalize (GObject *object) { EvHistory *history = EV_HISTORY (object); free_links_list (history->priv->links); G_OBJECT_CLASS (ev_history_parent_class)->finalize (object); } static void ev_history_class_init (EvHistoryClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); object_class->finalize = ev_history_finalize; signals[HISTORY_CHANGED] = g_signal_new ("changed", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (EvHistoryClass, changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); g_type_class_add_private (object_class, sizeof (EvHistoryPrivate)); } #define HISTORY_LENGTH 7 void ev_history_add_link (EvHistory *history, EvLink *link) { GList *l; g_return_if_fail (EV_IS_HISTORY (history)); g_return_if_fail (EV_IS_LINK (link)); for (l = history->priv->links; l; l = l->next) { if (!strcmp (ev_link_get_title (EV_LINK (l->data)), ev_link_get_title (link))) { g_object_unref (G_OBJECT (l->data)); history->priv->links = g_list_delete_link (history->priv->links, l); break; } } g_object_ref (link); history->priv->links = g_list_append (history->priv->links, link); if (g_list_length (history->priv->links) > HISTORY_LENGTH) { g_object_unref (G_OBJECT (history->priv->links->data)); history->priv->links = g_list_delete_link (history->priv->links, history->priv->links); } g_signal_emit (history, signals[HISTORY_CHANGED], 0); } EvLink * ev_history_get_link_nth (EvHistory *history, int index) { g_return_val_if_fail (EV_IS_HISTORY (history), NULL); return EV_LINK (g_list_nth_data (history->priv->links, index)); } int ev_history_get_n_links (EvHistory *history) { g_return_val_if_fail (EV_IS_HISTORY (history), -1); return g_list_length (history->priv->links); } EvHistory * ev_history_new (void) { return EV_HISTORY (g_object_new (EV_TYPE_HISTORY, NULL)); }