diff -r 279c0c81d3b1 -r 1bd5534c395d ui/common/types.c
--- a/ui/common/types.c	Fri Oct 13 11:26:47 2023 +0200
+++ b/ui/common/types.c	Fri Oct 13 15:20:54 2023 +0200
@@ -204,10 +204,28 @@
     return info;
 }
 
+UiModel* ui_model_copy(UiContext *ctx, UiModel* model) {
+    const CxAllocator* a = ctx ? ctx->allocator : cxDefaultAllocator;
+
+    UiModel* newmodel = cxMalloc(a, sizeof(UiModel));
+    *newmodel = *model;
+
+    newmodel->types = cxCalloc(a, model->columns, sizeof(UiModelType));
+    memcpy(newmodel->types, model->types, model->columns);
+
+    newmodel->titles = cxCalloc(a, model->columns, sizeof(char*));
+    for (int i = 0; i < model->columns; i++) {
+        newmodel->titles[i] = model->titles[i] ? cx_strdup_a(a, cx_str(model->titles[i])).ptr : NULL;
+    }
+
+    return newmodel;
+}
+
 void ui_model_free(UiContext *ctx, UiModel *mi) {
-    cxFree(ctx->allocator, mi->types);
-    cxFree(ctx->allocator, mi->titles);
-    cxFree(ctx->allocator, mi);
+    const CxAllocator* a = ctx ? ctx->allocator : cxDefaultAllocator;
+    cxFree(a, mi->types);
+    cxFree(a, mi->titles);
+    cxFree(a, mi);
 }
 
 // types