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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
38 lines
758 B
C++
38 lines
758 B
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/NonnullOwnPtrVector.h>
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#include <LibGUI/Forward.h>
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namespace GUI {
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class UndoStack {
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public:
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UndoStack();
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~UndoStack();
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void push(NonnullOwnPtr<Command>&&);
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bool can_undo() const { return m_stack_index < m_stack.size() && !m_stack.is_empty(); }
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bool can_redo() const { return m_stack_index > 0 && !m_stack.is_empty(); }
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void undo();
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void redo();
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void finalize_current_combo();
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private:
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struct UndoCommandsContainer {
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NonnullOwnPtrVector<Command> m_undo_vector;
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};
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NonnullOwnPtrVector<UndoCommandsContainer> m_stack;
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size_t m_stack_index { 0 };
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};
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}
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