List.h

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/* 
 * File:   TManager.h
 * Author: cancian
 *
 * Created on 21 de Junho de 2018, 12:55
 */

#ifndef LISTMANAGER_H
#define LISTMANAGER_H

#include <string>
#include <list>
#include <map>
#include <iterator>
#include <functional>
#include <algorithm>
#include "Util.h"

class Simulator;

template <typename T>
class List {
public:
	using CompFunct = std::function<bool(const T, const T)>;
public:
	List();
	List(const List& orig);
	virtual ~List();
public: // direct access to list
	unsigned int size();
	bool empty();
	void clear();
	void pop_front();
	template<class Compare> 
	void sort(Compare comp);
    std::list<T>* getList() const;
public: // new methods 
	T create();
	template<typename U>
	T create(U arg);
	std::string show();
	typename std::list<T>::iterator find(T element);
public:	// improved (easier) methods
	void insert(T element);
	void remove (T element);
	T next();
	T first();
	T last();
	T previous();
	T actual(); // get current element on the list (the last used)
    void setSortFunc(CompFunct _sortFunc);
private:
	//std::map<Util::identitifcation, T>* _map;
	std::list<T>* _list;
	CompFunct _sortFunc{[](const T, const T) {return false;}}; //! Default function: insert at the end of the list.
	typename std::list<T>::iterator _it;
};

template <typename T>
List<T>::List() {
	//_map = new std::map<Util::identitifcation, T>();
	_list = new std::list<T>();
	_it = _list->begin();
}

template <typename T>
std::list<T>* List<T>::getList() const {
	return _list;
}

template <typename T>
unsigned int List<T>::size() {
	return _list->size();
}

template <typename T>
List<T>::List(const List& orig) {
}

template <typename T>
List<T>::~List() {
}

template <typename T>
std::string List<T>::show() {
	int i = 0;
	std::string text = "{";
	for (typename std::list<T>::iterator it = _list->begin(); it != _list->end(); it++, i++) {
		text += "[" + std::to_string(i) + "]=(" + (*it)->show() + "),";
	}
	text += "}";
	return text;
}

template <typename T>
void List<T>::insert(T element) {
	 _list->insert(std::upper_bound(_list->begin(), _list->end(), element, _sortFunc), element);
}

template <typename T>
bool List<T>::empty() {
	return _list->empty();
}

template <typename T>
void List<T>::pop_front() {
	typename std::list<T>::iterator itTemp = _list->begin();
	_list->pop_front();
	if (_it == itTemp) { /* TODO +: check this */
		_it = _list->begin(); // if it points to the removed element, then changes to begin
	}
}

template <typename T>
void List<T>::remove(T element) {
	_list->remove(element);
	if ((*_it) == element) { /* TODO +: check this */
		_it = _list->begin(); // if it points to the removed element, then changes to begin
	}
}

template <typename T>
T List<T>::create() {
	return new T();
}

template <typename T>
void List<T>::clear() {
	_list->clear();
}

template <typename T>
T List<T>::next() {
	_it++;
	return (*_it);

}


template <typename T>
typename std::list<T>::iterator List<T>::find(T element) {
	for (typename std::list<T>::iterator it = _list->begin(); it != _list->end(); it++) {
		if ((*it) == element) {
			return it;
		}
	}
	return _list->end(); /* TODO+-: check nullptr or invalid iterator when not found */
	//return nullptr;
}


template <typename T>
T List<T>::first() {
	_it = _list->begin();
	return (*_it);
}

template <typename T>
T List<T>::last() {
	_it = _list->end();
	return (*_it);
}

template <typename T>
T List<T>::previous() {
	_it--;
	return (*_it);
}

template <typename T>
T List<T>::actual() {
	/* TODO: To implement. Must actualize _it on other methods when other elements are accessed */
	return (*_it);
}


template <typename T>
void List<T>::setSortFunc(CompFunct _sortFunc) {
	this->_sortFunc = _sortFunc;
}

template <typename T>
template<typename U>
T List<T>::create(U arg) {
	return T(arg);
}

template <typename T>
template<class Compare>
void List<T>::sort(Compare comp) {
	_list->sort(comp);
}

#endif /* LISTMANAGER_H */