diff -r 000000000000 -r 2483f517c562 ui/common/object.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/common/object.c	Sun Jan 21 16:30:18 2024 +0100
@@ -0,0 +1,81 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2017 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "object.h"
+#include "context.h"
+
+void ui_end(UiObject *obj) {
+    if(!obj->next) {
+        return;
+    }
+    
+    UiObject *prev = NULL;
+    while(obj->next) {
+        prev = obj;
+        obj = obj->next;
+    }
+    
+    if(prev) {
+        // TODO: free last obj
+        prev->next = NULL;
+    }
+}
+
+
+UiObject* uic_object_new(UiObject *toplevel, UIWIDGET widget) {
+    UiContext *ctx = toplevel->ctx;
+    
+    UiObject *newobj = cxCalloc(ctx->allocator, 1, sizeof(UiObject));
+    newobj->ctx = ctx;
+    newobj->widget = widget;
+    
+    return newobj;
+}
+
+void uic_obj_add(UiObject *toplevel, UiObject *ctobj) {
+    UiObject *current = uic_current_obj(toplevel);
+    current->next = ctobj;
+}
+
+UiObject* uic_current_obj(UiObject *toplevel) {
+    if(!toplevel) {
+        return NULL;
+    }
+    UiObject *obj = toplevel;
+    while(obj->next) {
+        obj = obj->next;
+    }
+    return obj;
+}
+
+UiContainer* uic_get_current_container(UiObject *obj) {
+    return uic_current_obj(obj)->container;
+}