ApplicationManager.h

#ifndef APPLICATION_MANAGER_H
#define APPLICATION_MANAGER_H

#include "DEFS.h"
#include "ErrorsType.h"
#include "Statements\Statement.h"
#include <utility>

class Input;
class Output;


//Main class that manages everything in the application.
class ApplicationManager
{
	enum { MaxCount = 200 };	//Max no of statements/connectors in a single flowchart

private:
	int StatCount;		//Actual number of statements
	int ConnCount;		//Actual number of connectors
	Statement* StatList[MaxCount];	//List of all statements (Array of pointers)
	Connector* ConnList[MaxCount];	//List of all connectors (Array of pointers)
	Connector* pSelectedConn;

	Statement *pSelectedStat; //a pointer to the last selected statement
	                          //you can set and get this pointer
	Statement *pClipboard;    //a pointer to the last copied/cut statement
	                          //you can set and get this pointer

	//Pointers to Input and Output classes
	Input *pIn;
	Output *pOut;

	string variables[30];
	int varcnt;

public:	
	ApplicationManager(); 
	~ApplicationManager();
	
	// == Actions Related Functions ==
	ActionType GetUserAction() const; //Reads the input command from the user 
	                                  //and returns the corresponding action type
	void ExecuteAction(ActionType) ;  //Creates an action and executes it
	
	// == Statements/Connector Management Functions ==
	void AddStatement(Statement* pStat);    //Adds a new Statement to the Flowchart
	Statement *GetStatement(Point P) const;	//Searches for a statement where point P belongs
	                                        //TODO: Complete its implementation 
	                                        //      WITHOUT breaking class responsibilities
	void DeleteStatement(Statement* pStat);
	void DeleteConn(Connector* pStat);

	void AddConnector(Connector* pConn);    //Adds a new Connector to the Flowchart
	Connector *GetConnector(Point P) const;	//search for a Connector where point P belongs
	void SetSelectedConn(Connector* pStat);
	Connector* GetSelectedConn() const;

	// Note: you should use the following 4 functions 
	//       in order not to break class responsibilities (especially in copy, cut and paste)
	Statement *GetSelectedStatement() const;	 //Returns the selected Statement
	void SetSelectedStatement(Statement *pStat); //Set the Statement selected by the user
	Statement *GetClipboard() const;	         //Returns the Clipboard
	void SetClipboard(Statement *pStat);         //Set the Clipboard

	// == Interface Management Functions ==
	Input *GetInput() const;        //Return pointer to the input
	Output *GetOutput() const;      //Return pointer to the output
	void UpdateInterface() const;	//Redraws all the drawing window

	void DeleteVariable(Statement* Stat);
	void AddVariable(Statement* Stat);

	RetErrors ApplicationManager::Validation();

};

#endif