menu system

main.cpp

#include <iostream>
#include <string>
#include "sub_menu.h"
#include "menu.h"
using namespace std;


MenuHelper menu;
void searchMenuHandler() {
	cout << "searchMenuHandler" << endl;
}

int main() {

	SubMenu* item = menu.addItem("Search");

	item->setHandler(&searchMenuHandler);

	char* title = item->getTitle();

	cout << title << endl;

	item->callHandler();


	string y;
	getline(cin, y);
	return 0;
}

menu.cpp

#include "sub_menu.h"
#include "menu.h"


void MenuHelper::reset() {
	this->activeItems = 0;
	this->selectedItem = 0;
}

SubMenu* MenuHelper::addItem(
	char* text
) {
	int index = this->activeItems;
	this->menuItems[index] = &SubMenu(text);
	this->activeItems++;
	return this->menuItems[index];
}

void MenuHelper::selectNextItem() {
	if (++this->selectedItem >= this->activeItems)
		this->selectedItem = 0;
}

void MenuHelper::selectPreviousItem() {
	if (--this->selectedItem < 0)
		this->selectedItem = this->activeItems - 1;
}


void MenuHelper::activateItem() {
	//this->getCurrentItem().callHandler();
}


SubMenu* MenuHelper::getCurrentItem() {
	return this->menuItems[this->selectedItem];
}

menu.h

#pragma once
#ifndef UI_MENU_H
#define UI_MENU_H



#define MENU_ITEMS_MAX 4





class MenuHelper {
public:
	MenuHelper() {
	
	}
	void reset();
	SubMenu* addItem(
		char* text
	);

	SubMenu* getCurrentItem();

	void selectNextItem();
	void selectPreviousItem();
	void activateItem();

private:
	SubMenu* menuItems[MENU_ITEMS_MAX];

	int activeItems = 0;
	int selectedItem = 0;
};



#endif

sub_menu.cpp

#include "sub_menu.h"



void SubMenu::setHandler(void(*_handler)()) {
	handler = *_handler;
}
void SubMenu::callHandler() {
	handler();
}
char* SubMenu::getTitle() {
	return title;
}

sub_menu.h

#ifndef SUB_MENU_H
#define SUB_MENU_H

typedef void(*MenuHandler)();
class SubMenu {
public:
	SubMenu(char* t) {
		title = t;
	}
	char* getTitle();
	void setHandler(void(*_handler)());
	void callHandler();
private:
	MenuHandler handler;
	char* title;
};



#endif