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163 | /* ev-file-monitor.c
* this file is part of lector, a cafe document viewer
*
* Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org>
*
* Lector 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 of the License, or
* (at your option) any later version.
*
* Lector 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.h>
#include <gio/gio.h>
#include "ev-file-monitor.h"
enum {
CHANGED,
N_SIGNALS
};
struct _EvFileMonitorPrivate {
GFileMonitor *monitor;
guint timeout_id;
};
static void ev_file_monitor_timeout_start (EvFileMonitor *ev_monitor);
static void ev_file_monitor_timeout_stop (EvFileMonitor *ev_monitor);
static void ev_file_monitor_changed_cb (GFileMonitor *monitor,
GFile *file,
GFile *other_file,
GFileMonitorEvent event_type,
EvFileMonitor *ev_monitor);
G_DEFINE_TYPE_WITH_PRIVATE (EvFileMonitor, ev_file_monitor, G_TYPE_OBJECT)<--- There is an unknown macro here somewhere. Configuration is required. If G_DEFINE_TYPE_WITH_PRIVATE is a macro then please configure it.
static guint signals[N_SIGNALS] = { 0 };
static void
ev_file_monitor_init (EvFileMonitor *ev_monitor)
{
ev_monitor->priv = ev_file_monitor_get_instance_private (ev_monitor);
}
static void
ev_file_monitor_finalize (GObject *object)
{
EvFileMonitor *ev_monitor = EV_FILE_MONITOR (object);
ev_file_monitor_timeout_stop (ev_monitor);
if (ev_monitor->priv->monitor) {
g_signal_handlers_disconnect_by_func (ev_monitor->priv->monitor,
ev_file_monitor_changed_cb,
ev_monitor);
g_object_unref (ev_monitor->priv->monitor);
ev_monitor->priv->monitor = NULL;
}
G_OBJECT_CLASS (ev_file_monitor_parent_class)->finalize (object);
}
static void
ev_file_monitor_class_init (EvFileMonitorClass *klass)
{
GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
g_object_class->finalize = ev_file_monitor_finalize;
/* Signals */
signals[CHANGED] =
g_signal_new ("changed",
EV_TYPE_FILE_MONITOR,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (EvFileMonitorClass, changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static gboolean
timeout_cb (EvFileMonitor *ev_monitor)
{
g_signal_emit (ev_monitor, signals[CHANGED], 0);
ev_monitor->priv->timeout_id = 0;
return FALSE;
}
static void
ev_file_monitor_timeout_start (EvFileMonitor *ev_monitor)
{
ev_file_monitor_timeout_stop (ev_monitor);
ev_monitor->priv->timeout_id =
g_timeout_add_seconds (5, (GSourceFunc)timeout_cb, ev_monitor);
}
static void
ev_file_monitor_timeout_stop (EvFileMonitor *ev_monitor)
{
if (ev_monitor->priv->timeout_id > 0) {
g_source_remove (ev_monitor->priv->timeout_id);
ev_monitor->priv->timeout_id = 0;
}
}
static void
ev_file_monitor_changed_cb (GFileMonitor *monitor,
GFile *file,
GFile *other_file,
GFileMonitorEvent event_type,
EvFileMonitor *ev_monitor)
{
switch (event_type) {
case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT:
ev_file_monitor_timeout_stop (ev_monitor);
g_signal_emit (ev_monitor, signals[CHANGED], 0);
break;
case G_FILE_MONITOR_EVENT_CHANGED:
ev_file_monitor_timeout_start (ev_monitor);
break;
default:
break;
}
}
EvFileMonitor *
ev_file_monitor_new (const gchar *uri)
{
EvFileMonitor *ev_monitor;
GFile *file;
GError *error = NULL;
ev_monitor = EV_FILE_MONITOR (g_object_new (EV_TYPE_FILE_MONITOR, NULL));
file = g_file_new_for_uri (uri);
ev_monitor->priv->monitor = g_file_monitor_file (file, G_FILE_MONITOR_NONE, NULL, &error);
if (ev_monitor->priv->monitor) {
g_signal_connect (ev_monitor->priv->monitor, "changed",
G_CALLBACK (ev_file_monitor_changed_cb), ev_monitor);
} else if (error) {
g_warning ("%s", error->message);
g_error_free (error);
}
g_object_unref (file);
return ev_monitor;
}
|