widget: use __index to get method

Signed-off-by: Julien Danjou <julien@danjou.info>

common/tokenize.gperf

@@ -27,11 +27,16 @@ left
 line
 max_value
 min_value
+mouse_add
+mouse_remove
+name_get
+name_set
 on
 resize
 reverse
 right
 scale
+set
 shadow
 shadow_offset
 show
@@ -50,5 +55,7 @@ topright
 true
 vertical
 vertical_gradient
+visible_get
+visible_set
 width
 yes

widget.c

@@ -510,6 +510,38 @@ luaA_widget_visible_get(lua_State *L)
     return 1;
 }
 
+static int
+luaA_widget_index(lua_State *L)
+{
+    widget_t **widget = luaA_checkudata(L, 1, "widget");
+    size_t len;
+    const char *str = luaL_checklstring(L, 2, &len);
+
+    switch(a_tokenize(str, len))
+    {
+      case A_TK_MOUSE_ADD:
+        lua_pushcfunction(L, luaA_widget_mouse_add);
+        return 1;
+      case A_TK_SET:
+        lua_pushcfunction(L, luaA_widget_set);
+        return 1;
+      case A_TK_NAME_SET:
+        lua_pushcfunction(L, luaA_widget_name_set);
+        return 1;
+      case A_TK_NAME_GET:
+        lua_pushcfunction(L, luaA_widget_name_get);
+        return 1;
+      case A_TK_VISIBLE_SET:
+        lua_pushcfunction(L, luaA_widget_visible_set);
+        return 1;
+      case A_TK_VISIBLE_GET:
+        lua_pushcfunction(L, luaA_widget_visible_get);
+        return 1;
+      default:
+        return 0;
+    }
+}
+
 const struct luaL_reg awesome_widget_methods[] =
 {
     { "new", luaA_widget_new },
@@ -524,6 +556,7 @@ const struct luaL_reg awesome_widget_meta[] =
     { "name_get", luaA_widget_name_get },
     { "visible_set", luaA_widget_visible_set },
     { "visible_get", luaA_widget_visible_get },
+    { "__index", luaA_widget_index },
     { "__gc", luaA_widget_gc },
     { "__eq", luaA_widget_eq },
     { "__tostring", luaA_widget_tostring },