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Torque/SDK/lib/maxsdk40/hold.h

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+/**********************************************************************
+ *<
+	FILE: hold.h
+
+	DESCRIPTION:
+
+	CREATED BY: Dan Silva
+
+	HISTORY:
+
+ *>	Copyright (c) 1994, All Rights Reserved.
+ **********************************************************************/
+
+#ifndef __HOLD__H__
+#define __HOLD__H__
+
+#define RESTOBJ_DOES_REFERENCE_POINTER		1
+#define RESTOBJ_GOING_TO_DELETE_POINTER		2
+
+class HoldStore;
+class RestoreObj : public InterfaceServer {
+	friend class HoldStore;
+	friend class GenUndoObject;
+	friend class CheckForFlush;
+		RestoreObj *next,*prev;
+	public:
+		RestoreObj() { next = prev = NULL; }
+   		virtual ~RestoreObj() {};
+		virtual void Restore(int isUndo)=0;
+		virtual void Redo()=0;
+		virtual int Size() { return 1; }
+		virtual void EndHold() { }
+		virtual TSTR Description() { return TSTR(_T("---")); }
+		virtual INT_PTR Execute(int cmd, ULONG_PTR arg1=0, ULONG_PTR arg2=0, ULONG_PTR arg3=0) {return -1;}
+			// WIN64 Cleanup: Shuler
+	};
+
+class Hold : public BaseInterfaceServer {
+  	HoldStore *holdStore, *holdList;
+	int undoEnabled;
+	int superLevel;
+	int putCount;
+	HoldStore *ResetStore();
+	void Init();
+	void AddOpToUndoMgr(TCHAR *name,int id);
+	public:
+		CoreExport Hold();
+		CoreExport ~Hold();
+		CoreExport void Put(RestoreObj *rob);
+		CoreExport void Begin();
+		CoreExport void Suspend();	  // temporarly suspend holding
+		CoreExport int IsSuspended();
+		CoreExport void Resume();    // resume holding
+		CoreExport int	Holding();  // are we holding?
+		CoreExport int  Restoring(int& isUndo);
+		CoreExport int  Redoing();
+		CoreExport int  RestoreOrRedoing();
+		CoreExport void DisableUndo();  // prevents Undo when Accept is called.
+		CoreExport void EnableUndo();
+		CoreExport void Restore();  // Restore changes from holdStore. 
+		CoreExport void Release();  // Tosses out holdStore. 
+
+		// 3 ways to terminate the Begin()...
+		CoreExport void End();  // toss holdStore.
+		CoreExport void Accept(int nameID); // record Undo (if enabled), End();
+		CoreExport void Accept(TCHAR *name);
+		CoreExport void Cancel();   // Restore changes, End() 
+
+		//		
+		// Group several Begin-End lists into a single Super-group.
+		CoreExport void SuperBegin();
+		CoreExport void SuperAccept(int nameID);
+		CoreExport void SuperAccept(TCHAR *name);
+		CoreExport void SuperCancel();
+
+		// Get the number of times Put() has been called in the current session of MAX
+		CoreExport int GetGlobalPutCount();
+
+	protected:
+		friend HoldStore;
+		unsigned flags;
+		enum {
+			kInRestore,
+			kInUndo,
+			kInRedo
+		};
+	};
+
+
+
+extern CoreExport Hold theHold;
+
+void CoreExport EnableUndoDebugPrintout(BOOL onoff);
+
+
+#endif //__HOLD__H__