tabs and tab overview

user-notification.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <tllist.h>
+
+#include "macros.h"
+
+enum user_notification_kind {
+    USER_NOTIFICATION_DEPRECATED,
+    USER_NOTIFICATION_WARNING,
+    USER_NOTIFICATION_ERROR,
+};
+
+struct user_notification {
+    enum user_notification_kind kind;
+    char *text;
+};
+
+typedef tll(struct user_notification) user_notifications_t;
+
+static inline void
+user_notifications_free(user_notifications_t *notifications)
+{
+    tll_foreach(*notifications, it)
+        free(it->item.text);
+    tll_free(*notifications);
+}
+
+static inline void
+user_notification_add(user_notifications_t *notifications,
+    enum user_notification_kind kind, char *text)
+{
+    struct user_notification notification = {
+        .kind = kind,
+        .text = text
+    };
+    tll_push_back(*notifications, notification);
+}
+
+void user_notification_add_fmt(user_notifications_t *notifications,
+                           enum user_notification_kind kind,
+                           const char *fmt, ...) PRINTF(3);