33 lines
777 B
C++
33 lines
777 B
C++
#pragma once
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class Action
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{
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public:
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enum class Direction { Undo, Redo } m_direction = Direction::Undo;
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bool was_saved = false;
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Direction reverse_direction() const { return (Direction)(1 - (int)m_direction); }
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virtual void run() = 0;
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virtual void undo() = 0;
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virtual Action* get_redo() = 0;
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virtual size_t memory() = 0;
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virtual ~Action() = default;
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Action() = default;
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};
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class ActionManager
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{
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public:
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static ActionManager I;
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std::stack<std::unique_ptr<Action>> m_actions;
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std::stack<std::unique_ptr<Action>> m_redos;
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size_t m_memory = 0;
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static void add(Action* action);
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static void undo();
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static void redo();
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static void clear();
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static bool empty()
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{
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return I.m_actions.empty();
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}
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};
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