mouse: Move "has touchpad" function to common

So it can be reused. This also fixes a memory leak in the function.
We were leaking the device list

Taken from GSD commit: f6dcba4e954f3e910854f3c92fb69b157683267d
From: Bastien Nocera <[email protected]>

1 files changed, 35 insertions, 0 deletions

diff --git a/plugins/common/msd-input-helper.h b/plugins/common/msd-input-helper.h
new file mode 100644
index 0000000..2a971ae
--- /dev/null
+++ b/plugins/common/msd-input-helper.h
@@ -0,0 +1,35 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2010 Bastien Nocera <[email protected]>
+ *
+ * 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 of the License, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __MSD_INPUT_HELPER_H
+#define __MSD_INPUT_HELPER_H
+
+G_BEGIN_DECLS
+
+#include <glib.h>
+
+#include <X11/extensions/XInput.h>
+#include <X11/extensions/XIproto.h>
+
+XDevice * device_is_touchpad  (XDeviceInfo deviceinfo);
+gboolean  touchpad_is_present (void);
+
+G_END_DECLS
+
+#endif /* __MSD_INPUT_HELPER_H */