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133 lines
2.8 KiB
133 lines
2.8 KiB
/***************************************************************************
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begin : Sun Oct 3 1999
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copyright : (C) 1997-99 by Peter Putzer
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email : putzer@kde.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; version 2. *
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* *
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***************************************************************************/
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#ifndef KSV_ACTIONLIST_H
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#define KSV_ACTIONLIST_H
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#include <tqptrstack.h>
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#include <tqobject.h>
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class KSVData;
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class KSVDragList;
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class KSVAction
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{
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public:
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KSVAction ();
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virtual ~KSVAction () = 0;
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virtual void undo () = 0;
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virtual void redo() = 0;
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private:
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const KSVAction& operator= (const KSVAction&); // undefined
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KSVAction (const KSVAction&); // undefined
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};
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class SimpleAction : public KSVAction
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{
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public:
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SimpleAction (KSVDragList* source, const KSVData* item);
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virtual ~SimpleAction();
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inline KSVDragList* source() { return mSource; }
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inline KSVData* item() { return mItem; }
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virtual void undo() = 0;
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virtual void redo() = 0;
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private:
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KSVDragList* mSource;
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KSVData* mItem;
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};
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class RemoveAction : public SimpleAction
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{
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public:
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RemoveAction (KSVDragList* s, const KSVData* i);
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virtual ~RemoveAction();
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virtual void undo();
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virtual void redo();
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};
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class AddAction : public SimpleAction
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{
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public:
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AddAction (KSVDragList* s, const KSVData* i);
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virtual ~AddAction();
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virtual void undo();
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virtual void redo();
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};
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class ChangeAction : public SimpleAction
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{
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public:
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ChangeAction (KSVDragList* s, const KSVData* oldState, const KSVData* newState);
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virtual ~ChangeAction();
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virtual void undo();
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virtual void redo();
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inline KSVData* newState() { return mNew; }
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inline KSVData* oldState() { return item(); }
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private:
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KSVData* mNew;
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};
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class CompoundAction : public KSVAction
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{
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public:
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CompoundAction (KSVAction*[], int nr);
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virtual ~CompoundAction();
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virtual void undo();
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virtual void redo();
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private:
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KSVAction** mActions;
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int mCount;
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};
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class ActionList : public TQObject, private TQPtrStack<KSVAction>
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{
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TQ_OBJECT
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public:
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ActionList (TQObject* parent, const char* name);
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virtual ~ActionList ();
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KSVAction* top () const { return TQPtrStack<KSVAction>::top(); }
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public slots:
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void undoLast ();
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void undoAll ();
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void redoLast ();
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void redoAll ();
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void push (KSVAction*);
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void clear ();
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signals:
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void undone ();
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void empty ();
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void filled ();
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};
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#endif
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