package Application;

public class MenuManager {

    private Menu rootMenu;
    private Menu currentMenu;

    public MenuManager(Menu rootMenu){
        this.rootMenu = rootMenu;
        this.currentMenu = rootMenu;
    }

    public void select(int i){
        this.currentMenu = currentMenu.getMenu(i);
    }

    public void back() throws Exception {
        if(!this.inRootMenu())
            this.currentMenu = this.currentMenu.getPreviousMenu();
        else
            throw new Exception("Menu is a root menu, a previous menu doesn't exist");
    }

    public Menu getCurrentMenu(){
        return this.currentMenu;
    }

    public boolean inRootMenu(){
        return this.currentMenu.equals(this.rootMenu);
    }

}