1 files changed, 148 insertions, 0 deletions
diff --git a/shell/ev-history.c b/shell/ev-history.c
new file mode 100644
index 00000000..9b59014c
--- /dev/null
+++ b/shell/ev-history.c
@@ -0,0 +1,148 @@
+/*
+ *  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)
+{
+	GList *l;
+
+	g_return_val_if_fail (EV_IS_HISTORY (history), NULL);
+
+	l = g_list_nth (history->priv->links, index);
+
+	return EV_LINK (l->data);
+}
+
+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));
+}
+