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/*
 * (C) Copyright 1996-2016 ECMWF.
 * 
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
 * In applying this licence, ECMWF does not waive the privileges and immunities 
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

/*! \file BasicSceneObject.h
    \brief Definition of the Template class BasicSceneObject.
    
    Magics Team - ECMWF 2007
    
    Started: Thu 1-Mar-2007
    
    Changes:
    
*/

#ifndef BasicSceneObject_H
#define BasicSceneObject_H

#include "magics.h"
#include "MagLog.h"
#include "VectorOfPointers.h"
#include "BasicGraphicsObject.h"
#include "Layout.h"
#include "DisplayManager.h"
#include "MagicsEvent.h"

//#include "SceneVisitor.h"

namespace magics {
	
class XmlNode;
class UserPoint;
class UserPoint;

class Transformation;
class AnimationRules;




class DrawingVisitor;
class TopAxisVisitor;
class BottomAxisVisitor;
class LeftAxisVisitor;
class RightAxisVisitor;
class BackgroundVisitor;
class FrameVisitor;
class TextVisitor;
class MetaDataVisitor;
class LegendVisitor;
class PreviewVisitor;
class HistoVisitor;
class MagnifierVisitor;
class SceneVisitor;
class LayoutManager;
class AnimationStep;
class SceneLayer;

class MetaDataCollector;
class MagnifierCollector;
class ValuesCollector;
class DataIndexCollector;
class BinningObject;

class Data;
class Visdef;

class BasicPositionalObject;
class BasicSceneNode;

enum MagicsMode { interactif, paper, basic};

class BasicSceneObject : public MetviewIcon {

public:
	BasicSceneObject(BasicSceneObject* parent = 0);
	virtual ~BasicSceneObject();
	
	virtual void push_back(BasicSceneObject* item) { 
		item->parent(this); 
		items_.push_back(item); 
	}
	
	bool items_empty() { return items_.empty(); }
	
	virtual void text(TextVisitor* text) { ASSERT(parent_); parent_->text(text); }
	virtual void legend(LegendVisitor* legend) { ASSERT(parent_); parent_->legend(legend); }
	virtual void  getReady(const LegendVisitor&);


	virtual void binning(BinningObject*)   { MagLog::warning() << "binning(BinningObject*) to be checked" << endl; }
	virtual void data(Data*)     { MagLog::warning() << "data(Data*) to be checked" << endl; }
	virtual void visdef(Visdef*) { MagLog::warning() << "visdef(Data*) to be checked" << endl; }
	

	
	void addVisitor(SceneVisitor* visitor) { visitors_.push_back(visitor); }
	
	void parent(BasicSceneObject* parent) { 

		parent_ = parent;  
	}
	void reparent(BasicSceneObject* parent) { 
			parent_ = parent;  
	}
	
	void orphan() { parent_ = 0; }
	BasicSceneObject& parent() const { ASSERT(parent_); return *parent_; }
	virtual void set(const XmlNode&) 
		{ MagLog::dev() << "Warning:  BasicSceneObject::set(const XmlNode&)-->Not implemented!" << endl; }
	virtual void resolve();
	virtual Layout* execute(AnimationStep&,  Layout&)
		{ MagLog::dev() << "Warning:  BasicGraphicsObject* BasicSceneObject::execute(AnimsationStep&))-->Not implemented!" << endl; return 0;}
	virtual void getReady() { dispatch(&BasicSceneObject::getReady); }
	virtual void release() { dispatch(&BasicSceneObject::release); }

	virtual void visit(MetaDataVisitor& meta)  		{ dispatch(meta); } 
	virtual void visit(PreviewVisitor& preview)  	{ dispatch(preview); }
	virtual void visit(HistoVisitor& histo)  		{ dispatch(histo); }
	virtual void visit(MagnifierVisitor& magnifier) { dispatch(magnifier); }
	
	virtual void visit(DateDescription& timestamp)  	{ dispatch(timestamp); }
	virtual void visit(LevelDescription& level)  	{ dispatch(level); }

	virtual void visit(Transformation& transformation)  	{ dispatch(transformation); }
	virtual void visit(AnimationRules& rules)  { dispatch(rules); }
	
	virtual void visit(MetaDataCollector& infos)  { dispatch(infos); }
	virtual void visit(MagnifierCollector& infos)  { dispatch(infos); }
	virtual void visit(ValuesCollector& infos)  { dispatch(infos); }
	virtual void visit(DataIndexCollector& infos)  { dispatch(infos); }
	
	virtual void visit(DrawingVisitor& drawing)  { dispatch(drawing); }
	virtual void visit(TopAxisVisitor& top)  { dispatch(top); }
	virtual void visit(BottomAxisVisitor& bottom)  { dispatch(bottom); }
	virtual void visit(LeftAxisVisitor& left)  { dispatch(left); }
	virtual void visit(RightAxisVisitor& right)  { dispatch(right); }
	virtual void visit(BackgroundVisitor& background)  { dispatch(background); }
	virtual void visit(FrameVisitor& frame)  { dispatch(frame); }
	
	virtual void visit(TextVisitor& text)  { dispatch(text); }
	virtual void visit(LegendVisitor& legend)  { dispatch(legend); }
	virtual void visit(SceneLayer& tree)  { dispatch(tree); }
	virtual void visit(BasicGraphicsObjectContainer& tree)  { dispatch(tree); }
	virtual void visit(AnimationStep& step)  { dispatch(step); }
	virtual void visit(SceneLayer& visitor, vector<LayoutVisitor*>& args)  { dispatch(visitor, args); }

	virtual bool needLegend();

	virtual void execute()
	{
	  ASSERT(parent_); 
	  return parent_->execute(); 
	} 

	virtual  BasicGraphicsObject* visualise()
	{
		  ASSERT(parent_);
		  return parent_->visualise();
	}
	virtual MagicsMode mode() { ASSERT(parent_); return parent_->mode(); }

	virtual Transformation& transformation() const
		{ ASSERT(parent_); return parent_->transformation(); } 
	virtual const Layout& layout() const 
		{ ASSERT(parent_); return parent_->layout(); } 
	virtual BasicGraphicsObject* toDisplay()
		{ ASSERT(parent_); return parent_->toDisplay(); }
	virtual double absoluteWidth()    const 
		{ ASSERT ( parent_ ); return  parent_->absoluteWidth(); } 
   	virtual double absoluteHeight()   const 
		{ ASSERT ( parent_ ); return  parent_->absoluteHeight(); } 
   	virtual void absoluteRootWidth(double width)   
		{ ASSERT ( parent_ ); return  parent_->absoluteRootWidth(width); } 
   	virtual void absoluteRootHeight(double height)   
   		{ ASSERT ( parent_ ); return  parent_->absoluteRootHeight(height); }
 	virtual int rootWidthResolution()   const
		{ ASSERT ( parent_ ); return  parent_->rootWidthResolution(); } 
   	virtual int rootHeightResolution() const   
   		{ ASSERT ( parent_ ); return  parent_->rootHeightResolution(); }
   	virtual int widthResolution()   const
   			{ ASSERT ( parent_ ); return  parent_->rootWidthResolution(); } 
   	virtual int heightResolution() const   
   	   		{ ASSERT ( parent_ ); return  parent_->rootHeightResolution(); }

   	virtual string theme() const // REturn the parent theme!
	{
  			return (parent_) ? parent_->theme() : "magics";
	}
   
	const string& name() const { return name_; }
	void name(const string& name)  { name_ = name; }

	virtual BasicSceneNode* insert(BasicPositionalObject*) { ASSERT (false);  return 0;}


protected:
	//! Method to print string about this class on to a stream of type ostream (virtual).
	virtual void print(ostream&) const; 
	typedef void (BasicSceneObject::*Function)();





	template <class T>
	void dispatch(T& visitor) {
		for ( vector<BasicSceneObject*>::iterator item = items_.begin(); item != items_.end(); ++item) 
			(*item)->visit(visitor); 		
	}
	template <class T1, class T2>
		void dispatch(T1& visitor, T2& args) {
			for ( vector<BasicSceneObject*>::iterator item = items_.begin(); item != items_.end(); ++item) 
				(*item)->visit(visitor, args); 		
		}
	void dispatch(Function function)
	{
		for ( vector<BasicSceneObject*>::iterator item = items_.begin(); item != items_.end(); ++item) 
			((*item)->*function)(); 		
	}


	VectorOfPointers<vector<BasicSceneObject*> >          items_;
	vector<SceneVisitor*>     visitors_;	 
 
	 BasicSceneObject* parent_; //Do not delete! Only a reference

	 string name_;

private:
	BasicSceneObject(const BasicSceneObject&);
    //! Overloaded << operator to copy - No copy allowed
	BasicSceneObject& operator=(const BasicSceneObject&);
	
// -- Friends
    //! Overloaded << operator to call print().
	friend ostream& operator<<(ostream& s,const BasicSceneObject& p)
		{ p.print(s); return s; }

};

class BasicPositionalObject : public BasicSceneObject
{
public: 
	BasicPositionalObject() {}
	virtual ~BasicPositionalObject() {}
	virtual Layout& layout() const = 0;
protected:
	double adjustDimension(double, double, double);
};

class BasicSceneNode : public BasicPositionalObject 
{
public:
	BasicSceneNode();
	BasicSceneNode(Layout*);
	virtual ~BasicSceneNode();

	virtual BasicSceneNode* insert(BasicPositionalObject*); // Return the node tinto which the object has been inserted! 
	Layout& layout() const
	{
	  { ASSERT(layout_); return *layout_; } 
	}    
	virtual void getReady();  
	virtual BasicSceneNode* clone();
	virtual BasicSceneNode* newNode(BasicPositionalObject*);

	virtual void visit(BasicGraphicsObjectContainer& tree)
	{
		tree.push_back(layout_);
		layout_->blankIt(); 
		dispatch(*layout_); 
		layout_->frameIt();  
	}
	void newpage();
	double absoluteWidth()    const;
	double absoluteHeight()   const;


	void manager(LayoutManager* manager) { manager_ = manager; }

protected:
	Layout* layout_;
	LayoutManager* manager_;
	friend class LayoutManager;
};

class EmptySceneObject: public BasicSceneObject {

public:
	EmptySceneObject();
	virtual ~EmptySceneObject();
    
 
    
    void visit(SceneLayer&, vector<LayoutVisitor*>&);
  
   

protected:
     //! Method to print string about this class on to a stream of type ostream (virtual).
	 virtual void print(ostream&) const; 
    
   
     
private:
    //! Copy constructor - No copy allowed
	EmptySceneObject(const EmptySceneObject&);
    //! Overloaded << operator to copy - No copy allowed
	EmptySceneObject& operator=(const EmptySceneObject&);

// -- Friends
    //! Overloaded << operator to call print().
	friend ostream& operator<<(ostream& s,const EmptySceneObject& )
		{ s << "EmptySceneObject";  return s; }

};

} // namespace magics
#endif