Userland/Applications/Help/History.h


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/*
 * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/String.h>
#include <AK/Vector.h>

class History final {
public:
    void push(const StringView& history_item);
    String current();

    void go_back();
    void go_forward();

    bool can_go_back() { return m_current_history_item > 0; }
    bool can_go_forward() { return m_current_history_item + 1 < static_cast<int>(m_items.size()); }

    void clear();

private:
    Vector<String> m_items;
    int m_current_history_item { -1 };
};