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/* $Id: history.c,v 1.3 2010/09/01 01:28:22 khorben Exp $ */
/* Copyright (c) 2009 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Surfer */
/* 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, version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>. */
#include <glib.h>
/* History */
/* private */
/* types */
typedef struct _History
{
gchar * base;
gchar * url;
gchar * post;
} History;
/* prototypes */
static History * _history_new(gchar const * url, gchar const * post);
static void _history_delete(History * h);
/* accessors */
static gboolean _history_can_go_back(GList * history);
static gboolean _history_can_go_forward(GList * history);
static gchar const * _history_get_location(GList * history);
/* functions */
/* history_new */
static History * _history_new(gchar const * url, gchar const * post)
{
History * h;
if((h = object_new(sizeof(*h))) == NULL)
return NULL;
h->base = NULL;
h->url = g_strdup(url);
h->post = (post != NULL) ? g_strdup(post) : NULL;
if(h->url == NULL || (post != NULL && h->post == NULL))
{
_history_delete(h);
return NULL;
}
return h;
}
/* history_delete */
static void _history_delete(History * h)
{
g_free(h->base);
g_free(h->url);
g_free(h->post);
free(h);
}
/* accessors */
/* history_can_go_back */
static gboolean _history_can_go_back(GList * history)
{
return history != NULL && history->prev != NULL
? TRUE : FALSE;
}
/* history_can_go_forward */
static gboolean _history_can_go_forward(GList * history)
{
return history != NULL && history->next != NULL
? TRUE : FALSE;
}
/* history_get_location */
static gchar const * _history_get_location(GList * history)
{
History * ghh;
if(history == NULL)
return NULL;
if((ghh = history->data) == NULL)
return NULL;
return ghh->url;
}
/* useful */
static GList * _history_append(History * history, GList * list)
{
GList * l;
if(list == NULL)
return g_list_append(list, history);
for(l = list->next; l != NULL; l = g_list_delete_link(l, l))
_history_delete(l->data);
list->next = NULL;
l = g_list_append(list, history);
return l->next;
}