--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libmlk-ui/mlk/ui/ui_p.h	Thu Mar 02 21:36:43 2023 +0100
@@ -0,0 +1,33 @@
+/*
+ * ui_p.h -- private helpers for libmlk-ui
+ *
+ * Copyright (c) 2020-2023 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef MLK_UI_P_H
+#define MLK_UI_P_H
+
+#define MLK__DELEGATE_INVOKE(d, def, f, ...)    \
+do {                                            \
+        if (d && d->f)                          \
+                d->f(d, __VA_ARGS__);           \
+        else if (def.f)                         \
+                def.f(&def, __VA_ARGS__);       \
+} while (0)
+
+#define MLK__STYLE(w, d)                        \
+        (w->style ? w->style : &d)
+
+#endif /* !MLK_UI_P_H */