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/*
* 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;
};
G_DEFINE_TYPE_WITH_PRIVATE (EvHistory, ev_history, G_TYPE_OBJECT)
static void
ev_history_init (EvHistory *history)
{
history->priv = ev_history_get_instance_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);
}
#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));
}
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