diff -r 9374fea8f77f -r f1b8cb53d2a2 src/history.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/history.h	Wed May 08 15:19:06 2013 +0300
@@ -0,0 +1,215 @@
+/*
+ *  LDForge: LDraw parts authoring CAD
+ *  Copyright (C) 2013 Santeri Piippo
+ *  
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *  
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *  
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef HISTORY_H
+#define HISTORY_H
+
+#include "common.h"
+#include "ldtypes.h"
+
+#define IMPLEMENT_HISTORY_TYPE(N) \
+	virtual ~N##History (); \
+	virtual void undo (); \
+	virtual void redo (); \
+	virtual HistoryType type () { return HISTORY_##N; }
+
+// =============================================================================
+enum HistoryType {
+	HISTORY_Del,
+	HISTORY_SetColor,
+	HISTORY_Edit,
+	HISTORY_ListMove,
+	HISTORY_Add,
+	HISTORY_QuadSplit,
+	HISTORY_Inline,
+	HISTORY_Move,
+	HISTORY_Combo,
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class HistoryEntry {
+public:
+	virtual void undo () {}
+	virtual void redo () {}
+	virtual ~HistoryEntry () {}
+	virtual HistoryType type () { return (HistoryType)(0); }
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class DelHistory : public HistoryEntry {
+public:
+	enum Type {
+		Cut,	// were deleted with a cut operation
+		Other,	// were deleted witout specific reason
+	};
+	
+	IMPLEMENT_HISTORY_TYPE (Del)
+	
+	vector<ulong> indices;
+	vector<LDObject*> cache;
+	const Type eType;
+	
+	DelHistory (vector<ulong> indices, vector<LDObject*> cache, const Type eType = Other) :
+		indices (indices), cache (cache), eType (eType) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class SetColorHistory : public HistoryEntry {
+public:
+	IMPLEMENT_HISTORY_TYPE (SetColor)
+	
+	vector<ulong> ulaIndices;
+	vector<short> daColors;
+	short dNewColor;
+	
+	SetColorHistory (vector<ulong> ulaIndices, vector<short> daColors, short dNewColor) :
+		ulaIndices (ulaIndices), daColors (daColors), dNewColor (dNewColor) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class EditHistory : public HistoryEntry {
+public:
+	IMPLEMENT_HISTORY_TYPE (Edit)
+	
+	const std::vector<ulong> ulaIndices;
+	const std::vector<LDObject*> paOldObjs, paNewObjs;
+	
+	EditHistory (std::vector<ulong> ulaIndices, std::vector<LDObject*> paOldObjs,
+		std::vector<LDObject*> paNewObjs) :
+		ulaIndices (ulaIndices), paOldObjs (paOldObjs), paNewObjs (paNewObjs) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class ListMoveHistory : public HistoryEntry {
+public:
+	IMPLEMENT_HISTORY_TYPE (ListMove)
+	
+	std::vector<ulong> ulaIndices;
+	bool bUp;
+	
+	std::vector<LDObject*> getObjects (short ofs);
+	ListMoveHistory (vector<ulong> ulaIndices, const bool bUp) :
+		ulaIndices (ulaIndices), bUp (bUp) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class AddHistory : public HistoryEntry {
+public:
+	enum Type {
+		Other,	// was "just added"
+		Paste,	// was added through a paste operation
+	};
+	
+	IMPLEMENT_HISTORY_TYPE (Add)
+	
+	std::vector<ulong> ulaIndices;
+	std::vector<LDObject*> paObjs;
+	const Type eType;
+	
+	AddHistory (std::vector<ulong> ulaIndices, std::vector<LDObject*> paObjs,
+		const Type eType = Other) :
+		ulaIndices (ulaIndices), paObjs (paObjs), eType (eType) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class QuadSplitHistory : public HistoryEntry {
+public:
+	IMPLEMENT_HISTORY_TYPE (QuadSplit)
+	
+	std::vector<ulong> ulaIndices;
+	std::vector<LDQuad*> paQuads;
+	
+	QuadSplitHistory (std::vector<ulong> ulaIndices, std::vector<LDQuad*> paQuads) :
+		ulaIndices (ulaIndices), paQuads (paQuads) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class InlineHistory : public HistoryEntry {
+public:
+	IMPLEMENT_HISTORY_TYPE (Inline)
+	
+	const std::vector<ulong> ulaBitIndices, ulaRefIndices;
+	const std::vector<LDSubfile*> paRefs;
+	const bool bDeep;
+	
+	InlineHistory (const std::vector<ulong> ulaBitIndices, const std::vector<ulong> ulaRefIndices,
+		const std::vector<LDSubfile*> paRefs, const bool bDeep) :
+		ulaBitIndices (ulaBitIndices), ulaRefIndices (ulaRefIndices), paRefs (paRefs), bDeep (bDeep) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class MoveHistory : public HistoryEntry {
+public:
+	IMPLEMENT_HISTORY_TYPE (Move)
+	
+	const std::vector<ulong> ulaIndices;
+	const vertex vVector;
+	
+	MoveHistory (const std::vector<ulong> ulaIndices, const vertex vVector) :
+		ulaIndices (ulaIndices), vVector (vVector) {}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+class ComboHistory : public HistoryEntry {
+public:
+	IMPLEMENT_HISTORY_TYPE (Combo)
+	
+	std::vector<HistoryEntry*> paEntries;
+	
+	ComboHistory (std::vector<HistoryEntry*> paEntries) : paEntries (paEntries) {}
+	
+	ComboHistory& operator<< (HistoryEntry* entry) {
+		paEntries.push_back (entry);
+		return *this;
+	}
+};
+
+// =============================================================================
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+// =============================================================================
+namespace History {
+	void addEntry (HistoryEntry* entry);
+	void undo ();
+	void redo ();
+	void clear ();
+	void updateActions ();
+	long pos ();
+	std::vector<HistoryEntry*>& entries ();
+};
+
+#endif // HISTORY_H
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