Celtic Minstrel
4359bb558e
git-svn-id: http://openexile.googlecode.com/svn/trunk@82 4ebdad44-0ea0-11de-aab3-ff745001d230
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
/*
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* undo.h
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* BoE
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*
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* Created by Celtic Minstrel on 29/05/09.
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*
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* For use in creating an undo history in the scenario editor.
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* Could also be used in the PC editor.
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*
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*/
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#include <list>
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class cAction {
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public:
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virtual void undo() = 0; // undoes this action if it has not already been undone
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virtual void redo() = 0; // redoes this action if it has been undone
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virtual bool isDone() = 0; // checks to see whether the action has been undone; returns false if it has
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virtual std::string getActionName() = 0; // returns the name of this action for display in the Edit menu
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virtual ~cAction();
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};
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class cUndoList {
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std::list<cAction*> theList;
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std::list<cAction*>::iterator cur, lastSave;
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size_t num_actions;
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public:
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cUndoList();
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void undo(); // undoes the current action and decrements the cur pointer
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void redo(); // increments the cur pointer and redoes the current action
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void save(); // sets the last saved action to the current action
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void revert(); // undoes all actions back to (but excluding) the last saved action
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void add(cAction* what);
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static size_t maxUndoSize;
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};
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// As a special convention, I will prefix action classes with 'a' instead of 'c'
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/*
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class aEditMonster : public cAction {
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cMonster oldMonst, newMonst;
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};
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class aEditItem : public cAction {
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cItemRec oldItem, newItem;
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};*/
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