mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-10 13:00:29 +03:00
45 lines
782 B
C++
45 lines
782 B
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Function.h>
|
|
#include <AK/NonnullOwnPtrVector.h>
|
|
#include <LibGUI/Forward.h>
|
|
|
|
namespace GUI {
|
|
|
|
class UndoStack {
|
|
public:
|
|
UndoStack();
|
|
~UndoStack();
|
|
|
|
void push(NonnullOwnPtr<Command>);
|
|
|
|
bool can_undo() const;
|
|
bool can_redo() const;
|
|
|
|
void undo();
|
|
void redo();
|
|
|
|
void set_current_unmodified();
|
|
bool is_current_modified() const;
|
|
|
|
void clear();
|
|
|
|
Optional<String> undo_action_text() const;
|
|
Optional<String> redo_action_text() const;
|
|
|
|
Function<void()> on_state_change;
|
|
|
|
private:
|
|
NonnullOwnPtrVector<Command> m_stack;
|
|
size_t m_stack_index { 0 };
|
|
Optional<size_t> m_clean_index;
|
|
};
|
|
|
|
}
|