--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/ui/tree.h Wed Sep 09 18:57:52 2026 +0200
@@ -0,0 +1,101 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2026 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.
+ */
+
+#ifndef UI_TREE_H
+#define UI_TREE_H
+
+#include "list.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct UiTreeArgs UiTreeArgs;
+
+typedef int (*ui_tree_getdepthfunc)(UiList *list, void *elm, int row, void *userdata);
+
+struct UiTreeArgs {
+ UiBool fill;
+ UiBool hexpand;
+ UiBool vexpand;
+ UiBool hfill;
+ UiBool vfill;
+ UiBool override_defaults;
+ int margin;
+ int margin_left;
+ int margin_right;
+ int margin_top;
+ int margin_bottom;
+ int colspan;
+ int rowspan;
+ int width;
+ int height;
+ const char *name;
+ const char *style_class;
+
+ UiList *list;
+ const char* varname;
+ UiModel *model;
+ ui_tree_getdepthfunc getdepth;
+ void *getdepthdata;
+ ui_getvaluefunc2 getvalue;
+ void *getvaluedata;
+
+ ui_callback onactivate;
+ void *onactivatedata;
+ const char *onactivate_action;
+ ui_callback onselection;
+ void *onselectiondata;
+ const char *onselection_action;
+ ui_callback ondragstart;
+ void *ondragstartdata;
+ const char *ondragstart_action;
+ ui_callback ondragcomplete;
+ void *ondragcompletedata;
+ const char *ondragcomplete_action;
+ ui_callback ondrop;
+ void *ondropdata;
+ const char *ondrop_action;
+ UiBool multiselection;
+ UiBool show_header;
+ UiMenuBuilder *contextmenu;
+
+ const int *states;
+ const int *visibility_states;
+};
+
+#define ui_treeview(obj, ...) ui_treeview_create(obj, &(UiTreeArgs) { __VA_ARGS__ } )
+
+UIEXPORT UIWIDGET ui_treeview_create(UiObject *obj, UiTreeArgs *args);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* UI_TREE_H */
+