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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup spoutliner
*/
#pragma once
#include "BLI_function_ref.hh"
struct ListBase;
struct SpaceOutliner;
namespace blender::ed::outliner {
struct TreeElement;
namespace tree_iterator {
using VisitorFn = FunctionRef<void(TreeElement *)>;
/**
* Preorder (meaning depth-first) traversal of all elements (regardless of collapsed state).
* Freeing the currently visited element in \a visitor is fine.
*/
void all(const SpaceOutliner &space_outliner, VisitorFn visitor);
void all(const ListBase &subtree, VisitorFn visitor);
/**
* Preorder (meaning depth-first) traversal of all elements not part of a collapsed sub-tree.
* Freeing the currently visited element in \a visitor is fine (but not its tree-store element).
*/
void all_open(const SpaceOutliner &, VisitorFn visitor);
void all_open(const SpaceOutliner &, const ListBase &subtree, VisitorFn visitor);
} // namespace tree_iterator
} // namespace blender::ed::outliner
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