00001
00006
00007 #ifndef _H_ACT_ACTIONSTACK
00008 #define _H_ACT_ACTIONSTACK
00009
00010 #include "ACT_Action.h"
00011 #include <deque>
00012
00013
00025
00026 class ACT_ActionStack {
00027 public:
00031 ACT_ActionStack(unsigned int maxStackDepth = 1);
00032
00036 ~ACT_ActionStack();
00037
00042 virtual unsigned int getStackDepth() const;
00043
00048 virtual unsigned int getMaxStackDepth() const;
00049
00054 virtual void setMaxStackDepth(unsigned int maxStackDepth);
00055
00063 virtual void push(ACT_Action& action);
00064
00069 virtual ACT_Action* peekUndo();
00070
00075 virtual ACT_Action* peekRedo();
00076
00081 virtual void flush();
00082
00087 virtual bool canUndo() const;
00088
00093 virtual void undo();
00094
00099 virtual bool canRedo() const;
00100
00105 virtual void redo();
00106
00107 protected:
00113 virtual unsigned int popBack(unsigned int numActions = 1);
00114
00120 virtual unsigned int popFront(unsigned int numActions = 1);
00121
00127 virtual bool getUndoIndex(unsigned int& index) const;
00128
00134 virtual bool getRedoIndex(unsigned int& index) const;
00135
00137 unsigned int m_maxStackDepth;
00139 unsigned int m_undoIndex;
00141 bool m_undoIndexValid;
00143 unsigned int m_redoIndex;
00145 bool m_redoIndexValid;
00147 deque<ACT_Action*> m_stack;
00148 };
00149
00150
00151 #endif // _H_ACT_ACTIONSTACK
