diff --git a/button.c b/button.c
index 0b398827..359e9ce1 100644
--- a/button.c
+++ b/button.c
@@ -144,6 +144,7 @@ luaA_button_newindex(lua_State *L)
 
 const struct luaL_reg awesome_button_methods[] =
 {
+    LUA_CLASS_METHODS(button)
     { "__call", luaA_button_new },
     { NULL, NULL }
 };
diff --git a/button.h b/button.h
index 572b3dd2..a89749b3 100644
--- a/button.h
+++ b/button.h
@@ -38,7 +38,8 @@ struct button_t
     void *release;
 };
 
-LUA_OBJECT_FUNCS(button_t, button, "button")
+lua_class_t button_class;
+LUA_OBJECT_FUNCS(button_class, button_t, button, "button")
 
 #endif
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
diff --git a/client.c b/client.c
index 55f717a9..a83ec847 100644
--- a/client.c
+++ b/client.c
@@ -1956,6 +1956,7 @@ luaA_client_module_newindex(lua_State *L)
 
 const struct luaL_reg awesome_client_methods[] =
 {
+    LUA_CLASS_METHODS(client)
     { "get", luaA_client_get },
     { "__index", luaA_client_module_index },
     { "__newindex", luaA_client_module_newindex },
diff --git a/client.h b/client.h
index a7cb5cf3..16142e83 100644
--- a/client.h
+++ b/client.h
@@ -24,6 +24,7 @@
 
 #include "mouse.h"
 #include "stack.h"
+#include "common/luaclass.h"
 
 #define CLIENT_SELECT_INPUT_EVENT_MASK (XCB_EVENT_MASK_STRUCTURE_NOTIFY \
                                         | XCB_EVENT_MASK_PROPERTY_CHANGE \
@@ -154,7 +155,11 @@ struct client_t
 client_t * luaA_client_checkudata(lua_State *, int);
 
 ARRAY_FUNCS(client_t *, client, DO_NOTHING)
-LUA_OBJECT_FUNCS(client_t, client, "client")
+
+/** Client class */
+lua_class_t client_class;
+
+LUA_OBJECT_FUNCS(client_class, client_t, client, "client")
 
 #define client_need_reban(c) \
     do { \
diff --git a/common/luaobject.h b/common/luaobject.h
index e2cdc0d0..8d11c122 100644
--- a/common/luaobject.h
+++ b/common/luaobject.h
@@ -22,7 +22,7 @@
 #ifndef AWESOME_COMMON_LUAOBJECT
 #define AWESOME_COMMON_LUAOBJECT
 
-#include "common/signal.h"
+#include "common/luaclass.h"
 
 static inline int
 luaA_settype(lua_State *L, const char *type)
@@ -160,7 +160,8 @@ typedef struct
     LUA_OBJECT_HEADER
 } lua_object_t;
 
-#define LUA_OBJECT_FUNCS(type, prefix, lua_type)                               \
+#define LUA_OBJECT_FUNCS(lua_class, type, prefix, lua_type)                    \
+    LUA_CLASS_FUNCS(prefix, lua_class)                                         \
     static inline type *                                                       \
     prefix##_new(lua_State *L)                                                 \
     {                                                                          \
@@ -171,6 +172,8 @@ typedef struct
         lua_newtable(L);                                                       \
         lua_setmetatable(L, -2);                                               \
         lua_setfenv(L, -2);                                                    \
+        lua_pushvalue(L, -1);                                                  \
+        luaA_class_emit_signal(L, &(lua_class), "new", 1);                     \
         return p;                                                              \
     }                                                                          \
                                                                                \
diff --git a/image.c b/image.c
index a4fb713e..8bdcc43d 100644
--- a/image.c
+++ b/image.c
@@ -770,6 +770,7 @@ luaA_image_index(lua_State *L)
 
 const struct luaL_reg awesome_image_methods[] =
 {
+    LUA_CLASS_METHODS(image)
     { "__call", luaA_image_new },
     { "argb32", luaA_image_argb32_new },
     { NULL, NULL }
diff --git a/image.h b/image.h
index 1df544ce..82b69e00 100644
--- a/image.h
+++ b/image.h
@@ -26,6 +26,7 @@
 
 #include "common/util.h"
 #include "common/luaobject.h"
+#include "common/luaclass.h"
 
 typedef struct
 {
@@ -39,7 +40,8 @@ typedef struct
     bool isupdated;
 } image_t;
 
-LUA_OBJECT_FUNCS(image_t, image, "image")
+lua_class_t image_class;
+LUA_OBJECT_FUNCS(image_class, image_t, image, "image")
 
 int image_new_from_argb32(int, int, uint32_t *);
 uint8_t * image_getdata(image_t *);
diff --git a/key.c b/key.c
index a4f07369..0598dbef 100644
--- a/key.c
+++ b/key.c
@@ -1146,6 +1146,7 @@ luaA_key_newindex(lua_State *L)
 
 const struct luaL_reg awesome_key_methods[] =
 {
+    LUA_CLASS_METHODS(key)
     { "__call", luaA_key_new },
     { NULL, NULL }
 };
diff --git a/key.h b/key.h
index 49efcbf1..40a53461 100644
--- a/key.h
+++ b/key.h
@@ -39,7 +39,8 @@ typedef struct keyb_t
     void *release;
 } keyb_t;
 
-LUA_OBJECT_FUNCS(keyb_t, key, "key")
+lua_class_t key_class;
+LUA_OBJECT_FUNCS(key_class, keyb_t, key, "key")
 
 bool key_press_lookup_string(xcb_keysym_t, char *, ssize_t);
 xcb_keysym_t key_getkeysym(xcb_keycode_t, uint16_t);
diff --git a/tag.c b/tag.c
index e24b0c0e..842a2c7b 100644
--- a/tag.c
+++ b/tag.c
@@ -405,6 +405,7 @@ luaA_tag_newindex(lua_State *L)
 
 const struct luaL_reg awesome_tag_methods[] =
 {
+    LUA_CLASS_METHODS(tag)
     { "__call", luaA_tag_new },
     { NULL, NULL }
 };
diff --git a/tag.h b/tag.h
index 1fd29143..b5178255 100644
--- a/tag.h
+++ b/tag.h
@@ -47,7 +47,8 @@ void tag_append_to_screen(screen_t *);
 void tag_unref_simplified(tag_t **);
 
 ARRAY_FUNCS(tag_t *, tag, tag_unref_simplified)
-LUA_OBJECT_FUNCS(tag_t, tag, "tag")
+lua_class_t tag_class;
+LUA_OBJECT_FUNCS(tag_class, tag_t, tag, "tag")
 
 #endif
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
diff --git a/wibox.c b/wibox.c
index c7afd6a2..2e4dbe17 100644
--- a/wibox.c
+++ b/wibox.c
@@ -1201,6 +1201,7 @@ luaA_wibox_newindex(lua_State *L)
 
 const struct luaL_reg awesome_wibox_methods[] =
 {
+    LUA_CLASS_METHODS(wibox)
     { "__call", luaA_wibox_new },
     { NULL, NULL }
 };
diff --git a/wibox.h b/wibox.h
index d62779b8..f6666704 100644
--- a/wibox.h
+++ b/wibox.h
@@ -116,7 +116,8 @@ void wibox_border_width_set(wibox_t *, uint32_t);
 void wibox_border_color_set(wibox_t *, const xcolor_t *);
 void wibox_orientation_set(wibox_t *, orientation_t);
 
-LUA_OBJECT_FUNCS(wibox_t, wibox, "wibox")
+lua_class_t wibox_class;
+LUA_OBJECT_FUNCS(wibox_class, wibox_t, wibox, "wibox")
 
 #endif
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
diff --git a/widget.c b/widget.c
index 0ba65104..df4144ed 100644
--- a/widget.c
+++ b/widget.c
@@ -552,6 +552,7 @@ luaA_widget_extents(lua_State *L)
 
 const struct luaL_reg awesome_widget_methods[] =
 {
+    LUA_CLASS_METHODS(widget)
     { "__call", luaA_widget_new },
     { NULL, NULL }
 };
diff --git a/widget.h b/widget.h
index aa8f5d29..f0d5261a 100644
--- a/widget.h
+++ b/widget.h
@@ -56,7 +56,8 @@ struct widget_t
     bool isvisible;
 };
 
-LUA_OBJECT_FUNCS(widget_t, widget, "widget");
+lua_class_t widget_class;
+LUA_OBJECT_FUNCS(widget_class, widget_t, widget, "widget");
 
 struct widget_node_t
 {