diff -r 77254bd6dccb -r c3dfcb8f0be7 ui/cocoa/ListDataSource.m
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/cocoa/ListDataSource.m	Sun Aug 24 15:24:16 2025 +0200
@@ -0,0 +1,110 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2025 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.
+ */
+
+#import "ListDataSource.h"
+
+@implementation ListDataSource
+
+- (id) init:(NSArray<NSTableColumn*>*) columns var:(UiVar*)var getvalue:(ui_getvaluefunc2) getvaluefunc getvaluedata:(void*)userdata {
+    _columns = columns;
+    _var = var;
+    _getvalue = getvaluefunc;
+    _getvaluedata = userdata;
+    return self;
+}
+
+- (NSInteger) numberOfRowsInTableView:(NSTableView *) tableView {
+    if(_var) {
+        UiList *list = _var->value;
+        if(list->count) {
+            return list->count(list);
+        }
+    }
+    return 0;
+}
+
+- (id) tableView:(NSTableView *) tableView
+objectValueForTableColumn:(NSTableColumn *) tableColumn
+             row:(NSInteger) row
+{
+    id ret = nil;
+    UiList *list = _var->value;
+    void *elm = list->get(list, (int)row);
+    if(elm) {
+        // get column index
+        NSUInteger colIndex = [_columns indexOfObject:tableColumn];
+        if(colIndex == NSNotFound) {
+            return nil;
+        }
+        
+        // get UI model type for this column
+        UiModelType type = UI_STRING;
+        UiModel *model = _model;
+        if(model) {
+            if(colIndex >= model->columns) {
+                return nil;
+            }
+            type = model->types[colIndex];
+        }
+        
+        // convert the list element
+        UiBool freeResult = FALSE;
+        void *data = _getvalue(list, elm, (int)row, (int)colIndex, _getvaluedata, &freeResult);
+        
+        switch(type) {
+            case UI_STRING: {
+                ret = [[NSString alloc] initWithUTF8String:data];
+                break;
+            }
+            case UI_STRING_FREE: {
+                ret = [[NSString alloc] initWithUTF8String:data];
+                freeResult = TRUE;
+                break;
+            }
+            case UI_INTEGER: {
+                break;
+            }
+            case UI_ICON: {
+                break;
+            }
+            case UI_ICON_TEXT: {
+                break;
+            }
+            case UI_ICON_TEXT_FREE: {
+                break;
+            }
+        }
+        
+        if(freeResult) {
+            free(data);
+        }
+    }
+    return ret;
+}
+
+@end