/*
 * SceneTreeView.h
 *
 * Copyright (C) 1999 Stephen F. White
 * 
 * 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 2 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 (see the file "COPYING" for details); if 
 * not, write to the Free Software Foundation, Inc., 675 Mass Ave, 
 * Cambridge, MA 02139, USA.
 */

#ifndef _SCENE_TREE_VIEW_H
#define _SCENE_TREE_VIEW_H

#ifndef _SCENE_VIEW_H
#include "SceneView.h"
#endif

class Node;
class NodeList;
class Path;
class Hint;
class Scene;

#include "swttypedef.h"

class SceneTreeView : public SceneView
{
public:
			SceneTreeView(Scene *scene, SWND parent);
	virtual        ~SceneTreeView();

	virtual void	OnUpdate(SceneView *sender, int type, Hint *hint);
	virtual void	OnSize(int width, int height);
	void		OnSelectionChanged(STREEITEM item);
	void		OnBeginDrag(STREEITEM item);
	virtual int	OnDragEnter(int x, int y, int modifiers);
	virtual int	OnDragOver(int x, int y, int modifiers);
	virtual void	OnDragLeave();
	virtual int	OnDrop(int x, int y, int modifiers);

protected:
	void		InsertNodeListRec(NodeList *list, int field,
					  STREEITEM parent);
	STREEITEM	InsertNodeRec(Node *node, int field,
				      int position, STREEITEM relative);
	void		InsertChildren(STREEITEM item, Node *node);
	void		UpdateSelection();
	bool		ScrollIsValid(int scrollCode, int which);
	void		DeleteItemRec(STREEITEM item);
	bool		UpdateNode(STREEITEM item, Node *node);
	bool		UpdateAddNode(STREEITEM item, Node *node,
				      Node *parent, int field);
	bool		UpdateRemoveNode(STREEITEM, Node *node, Node *parent,
					 int field, Node *curParent);
	Path	       *MakePath(STREEITEM item);
	int		GetIndex(STREEITEM item);
	void		UpdateOverlay();
	void		UpdateOverlayRec(STREEITEM item);
	STREEITEM 	TreeInsertItem(STREE tree, int position, 
                                       STREEITEM relative,Node *node);
        void            renameNode(STREEITEM item, RouteUpdate *routeUpdate);
        void            renameNode(STREEITEM item, Node *node);

protected:
	STREE		_tree;
	SBITMAP		_bitmap;
	SBITMAP		_mask;
	Node	       *_currentDragSource;
	Node	       *_currentDragParent;
	int		_currentDragField;
        int             _bitmapItems;
};

#endif