chromium/chrome/browser/bookmarks/bookmark_expanded_state_tracker.h

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_
#define CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_

#include <set>

#include "base/memory/raw_ptr.h"
#include "components/bookmarks/browser/base_bookmark_model_observer.h"
#include "components/keyed_service/core/keyed_service.h"

class PrefService;

namespace bookmarks {
class BookmarkModel;
class BookmarkNode;
}  // namespace bookmarks

// BookmarkExpandedStateTracker is used to track a set of expanded nodes. The
// nodes are persisted in preferences. If an expanded node is removed from the
// model BookmarkExpandedStateTracker removes the node.
class BookmarkExpandedStateTracker
    : public bookmarks::BaseBookmarkModelObserver,
      public KeyedService { … };

#endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXPANDED_STATE_TRACKER_H_