--- a/include/mb_animate.h	Mon Nov 22 12:38:36 2010 +0800
+++ b/include/mb_animate.h	Mon Nov 22 13:15:33 2010 +0800
@@ -4,8 +4,8 @@
 #define __ANIMATE_H_
 
 #include "mb_types.h"
-#include "mb_timer.h"
 #include "mb_paint.h"
+#include "mb_backend.h"
 
 /*! \page def_action How to Define An Action?
  *

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/mb_backend_utils.h	Mon Nov 22 13:15:33 2010 +0800
@@ -0,0 +1,12 @@
+#ifndef __MB_BACKEND_UTILS_H_
+#define __MB_BACKEND_UTILS_H_
+
+#include "mb_backend.h"
+#include "mb_timer.h"
+
+/*! \brief A facotry of timer manager implemented with mb_tman_t.
+ */
+extern mb_timer_factory_t tman_timer_factory;
+extern mb_tman_t * tman_timer_man_get_tman(mb_timer_man_t *tm_man);
+
+#endif /* __MB_BACKEND_UTILS_H_ */

--- a/include/mb_redraw_man.h	Mon Nov 22 12:38:36 2010 +0800
+++ b/include/mb_redraw_man.h	Mon Nov 22 13:15:33 2010 +0800
@@ -8,7 +8,6 @@
 #include "mb_types.h"
 #include "mb_observer.h"
 #include "mb_img_ldr.h"
-#include "mb_timer.h"
 
 typedef struct _redraw_man redraw_man_t;
 

--- a/src/X_supp.c	Mon Nov 22 12:38:36 2010 +0800
+++ b/src/X_supp.c	Mon Nov 22 13:15:33 2010 +0800
@@ -11,6 +11,7 @@
 #include "mb_timer.h"
 #include "mb_X_supp.h"
 #include "mb_backend.h"
+#include "mb_backend_utils.h"
 #include "config.h"
 
 #ifdef XSHM
@@ -27,6 +28,8 @@
 
 #define ONLY_MOUSE_MOVE_RAW 1
 
+static mb_timer_factory_t *_timer_factory = &tman_timer_factory;
+
 /*! \ingroup xkb
  * @{
  */
@@ -79,99 +82,6 @@
     int mbut_state;	       /* Button state of last motion event */
 };
 
-/*! \defgroup x_supp_timer Timer manager for X.
- *
- * This implmentation of timer manager is based on mb_tman_t.
- * @{
- */
-struct _X_supp_timer_man {
-    mb_timer_man_t timer_man;
-    mb_tman_t *tman;
-};
-
-static int _x_supp_timer_man_timeout(struct _mb_timer_man *tm_man,
-				     mb_timeval_t *tmout,
-				     mb_timer_cb_t cb, void *data);
-static void _x_supp_timer_man_remove(struct _mb_timer_man *tm_man, int tm_hdl);
-static mb_timer_man_t *_x_supp_timer_fact_new(void);
-static void _x_supp_timer_fact_free(mb_timer_man_t *timer_man);
-
-static struct _X_supp_timer_man _x_supp_default_timer_man = {
-    {_x_supp_timer_man_timeout, _x_supp_timer_man_remove},
-    NULL
-};
-
-static mb_timer_factory_t _x_supp_default_timer_factory = {
-    _x_supp_timer_fact_new,
-    _x_supp_timer_fact_free
-};
-
-static mb_timer_factory_t *_timer_factory = &_x_supp_default_timer_factory;
-
-/*! \brief Content of a timeout request.
- *
- * This is only used by internal of X support.  This data structure
- * carry information to adopt mb_tman_t to mb_timer_man_t.
- */
-struct _X_supp_timeout_data {
-    mb_timer_t *timer;		/*!< Handle returned by mb_tman_timeout() */
-    mb_timer_cb_t cb;		/*!< Real callback function */
-    void *data;			/*!< data for real callback */
-};
-
-static void
-_x_supp_tmo_hdlr(const mb_timeval_t *tmo,
-		 const mb_timeval_t *now,
-		 void *arg) {
-    struct _X_supp_timeout_data *data = (struct _X_supp_timeout_data *)arg;
-    
-    data->cb((int)data, tmo, now, data->data);
-}
-
-static int
-_x_supp_timer_man_timeout(struct _mb_timer_man *tm_man,
-			  mb_timeval_t *tmout, /* timeout (wall time) */
-			  mb_timer_cb_t cb, void *data) {
-    struct _X_supp_timer_man *timer_man = (struct _X_supp_timer_man *)tm_man;
-    mb_timer_t *timer;
-    struct _X_supp_timeout_data *tmout_data;
-
-    tmout_data = O_ALLOC(struct _X_supp_timeout_data);
-    tmout_data->cb = cb;
-    tmout_data->data = data;
-    timer = mb_tman_timeout(timer_man->tman, tmout,
-			    _x_supp_tmo_hdlr, tmout_data);
-    if(timer == NULL)
-	return ERR;
-    tmout_data->timer = timer;
-
-    return (int)tmout_data;
-}
-
-static void
-_x_supp_timer_man_remove(struct _mb_timer_man *tm_man, int tm_hdl) {
-    struct _X_supp_timer_man *timer_man = (struct _X_supp_timer_man *)tm_man;
-    struct _X_supp_timeout_data *tmout_data =
-	(struct _X_supp_timeout_data *)tm_hdl;
-
-    mb_tman_remove(timer_man->tman, tmout_data->timer);
-    free(tmout_data);
-}
-
-static mb_timer_man_t *
-_x_supp_timer_fact_new(void) {
-    if(_x_supp_default_timer_man.tman == NULL)
-	_x_supp_default_timer_man.tman = mb_tman_new();
-    return (mb_timer_man_t *)&_x_supp_default_timer_man;
-}
-
-static void
-_x_supp_timer_fact_free(mb_timer_man_t *timer_man) {
-}
-
-
-/* @} */
-
 static void _x_supp_handle_x_event(X_supp_runtime_t *rt);
 
 /*! \defgroup x_supp_io IO manager for X.
@@ -266,7 +176,7 @@
     struct _X_supp_IO_man *io_man = (struct _X_supp_IO_man *)xmb_rt->io_man;
     struct _X_supp_timer_man *timer_man =
 	(struct _X_supp_timer_man *)xmb_rt->timer_man;
-    mb_tman_t *tman = timer_man->tman;
+    mb_tman_t *tman = tman_timer_man_get_tman(timer_man);
     int fd;
     mb_timeval_t now, tmo;
     struct timeval tv;

--- a/src/timer.c	Mon Nov 22 12:38:36 2010 +0800
+++ b/src/timer.c	Mon Nov 22 13:15:33 2010 +0800
@@ -6,6 +6,7 @@
 #include <string.h>
 #include "mb_timer.h"
 #include "mb_tools.h"
+#include "mb_backend.h"
 
 
 #define OK 0
@@ -122,3 +123,101 @@
 
     return OK;
 }
+
+/*! \defgroup tman_timer_man Timer manager based on mb_tman_t.
+ *
+ * This implmentation of timer manager is based on mb_tman_t.
+ * @{
+ */
+struct _tman_timer_man {
+    mb_timer_man_t timer_man;
+    mb_tman_t *tman;
+};
+
+static int _tman_timer_man_timeout(struct _mb_timer_man *tm_man,
+				   mb_timeval_t *tmout,
+				   mb_timer_cb_t cb, void *data);
+static void _tman_timer_man_remove(struct _mb_timer_man *tm_man, int tm_hdl);
+static mb_timer_man_t *_tman_timer_fact_new(void);
+static void _tman_timer_fact_free(mb_timer_man_t *timer_man);
+
+static struct _tman_timer_man _tman_default_timer_man = {
+    {_tman_timer_man_timeout, _tman_timer_man_remove},
+    NULL
+};
+
+mb_timer_factory_t tman_timer_factory = {
+    _tman_timer_fact_new,
+    _tman_timer_fact_free
+};
+
+/*! \brief Content of a timeout request.
+ *
+ * This is only used by internal of X support.  This data structure
+ * carry information to adopt mb_tman_t to mb_timer_man_t.
+ */
+struct _tman_timeout_data {
+    mb_timer_t *timer;		/*!< Handle returned by mb_tman_timeout() */
+    mb_timer_cb_t cb;		/*!< Real callback function */
+    void *data;			/*!< data for real callback */
+};
+
+static void
+_tman_tmo_hdlr(const mb_timeval_t *tmo,
+		 const mb_timeval_t *now,
+		 void *arg) {
+    struct _tman_timeout_data *data = (struct _tman_timeout_data *)arg;
+    
+    data->cb((int)data, tmo, now, data->data);
+}
+
+static int
+_tman_timer_man_timeout(struct _mb_timer_man *tm_man,
+			  mb_timeval_t *tmout, /* timeout (wall time) */
+			  mb_timer_cb_t cb, void *data) {
+    struct _tman_timer_man *timer_man = (struct _tman_timer_man *)tm_man;
+    mb_timer_t *timer;
+    struct _tman_timeout_data *tmout_data;
+
+    tmout_data = O_ALLOC(struct _tman_timeout_data);
+    tmout_data->cb = cb;
+    tmout_data->data = data;
+    timer = mb_tman_timeout(timer_man->tman, tmout,
+			    _tman_tmo_hdlr, tmout_data);
+    if(timer == NULL)
+	return ERR;
+    tmout_data->timer = timer;
+
+    return (int)tmout_data;
+}
+
+static void
+_tman_timer_man_remove(struct _mb_timer_man *tm_man, int tm_hdl) {
+    struct _tman_timer_man *timer_man = (struct _tman_timer_man *)tm_man;
+    struct _tman_timeout_data *tmout_data =
+	(struct _tman_timeout_data *)tm_hdl;
+
+    mb_tman_remove(timer_man->tman, tmout_data->timer);
+    free(tmout_data);
+}
+
+static mb_timer_man_t *
+_tman_timer_fact_new(void) {
+    if(_tman_default_timer_man.tman == NULL)
+	_tman_default_timer_man.tman = mb_tman_new();
+    return (mb_timer_man_t *)&_tman_default_timer_man;
+}
+
+static void
+_tman_timer_fact_free(mb_timer_man_t *timer_man) {
+}
+
+mb_tman_t *
+tman_timer_man_get_tman(mb_timer_man_t *tm_man) {
+    struct _tman_timer_man *timer_man = (struct _tman_timer_man *)tm_man;
+
+    return timer_man->tman;
+}
+
+
+/* @} */