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43 lines
793 B
C++
43 lines
793 B
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "History.h"
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void History::push(const StringView& history_item)
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{
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if (!m_items.is_empty() && m_items[m_current_history_item] == history_item)
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return;
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m_items.shrink(m_current_history_item + 1);
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m_items.append(history_item);
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m_current_history_item++;
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}
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String History::current()
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{
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if (m_current_history_item == -1)
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return {};
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return m_items[m_current_history_item];
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}
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void History::go_back()
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{
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VERIFY(can_go_back());
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m_current_history_item--;
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}
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void History::go_forward()
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{
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VERIFY(can_go_forward());
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m_current_history_item++;
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}
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void History::clear()
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{
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m_items = {};
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m_current_history_item = -1;
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}
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