private void menuButtonCategory_Click(object sender, EventArgs e)
        {
            menuButton b = sender as menuButton;

            clickedButton = b.getName;
            addCategoryContentToPanel(panelMenu);
        }
        private void BackToCategory_Click(object sender, EventArgs e)
        {
            menuButton b = sender as menuButton;

            this.panelMenu.Controls.Remove(b);
            addCategoriesToPanel(this.panelMenu);
        }
        public void addCategoryContentToPanel(Panel panel)
        {
            this.panelMenu = panel;

            panel.Controls.OfType <menuButton>().Where(i => i.Tag == "CATEGORY").ToList().ForEach(i => panel.Controls.Remove(i));


            menuButton backToCategory = new menuButton("COFNIJ DO WYBORU KATEGORII");
            Image      back           = Image.FromFile(@"../../back_image.png");
            Point      position       = new Point(5, 0);

            this.getListOfMenuContentButtons();
            foreach (menuButton button in buttons)
            {
                button.Location = position;
                button.Tag      = "PRODUCT";
                panel.Controls.Add(button);
                position.X += 85;
                if (position.X > 515)
                {
                    position.Y += 85;
                    position.X  = 5;
                }
            }
            position.X              = 0;
            position.Y              = 520;
            backToCategory.Image    = back;
            backToCategory.Location = position;
            backToCategory.Tag      = "PRODUCT";
            backToCategory.Click   += BackToCategory_Click;
            panel.Controls.Add(backToCategory);
        }
        private void menuButtonProduct_Click(object sender, EventArgs e)
        {
            menuButton b = sender as menuButton;

            order.addNewProduct(b.getProduct);
            this.panelOrder.Controls.Find("totalAmountOfOrder", false).Last().Text = "SUMA: " + Convert.ToString(order.getCostOfOrder) + " PLN";
            updateTreeView(b.getName, b.getPrice, b.getIngredients);
            addCategoriesToPanel(this.panelMenu);
        }
        private void InputButton_Selected(object sender, EventArgs e)
        {
            menuButton b = sender as menuButton;

            if (b.getColor != Color.OrangeRed)
            {
                input.getIngredients.Remove(input.getIngredients.Find(x => x.ToUpper() == b.getName));

                b.getColor = Color.OrangeRed;
            }
            else
            {
                input.getIngredients.Add(b.getName);

                b.getColor = Color.LightYellow;
            }
        }
        private void OutputButton_Selected(object sender, EventArgs e)
        {
            menuButton b = sender as menuButton;

            if (b.getColor != Color.Green)
            {
                input.getIngredients.Add(b.getName);
                input.getPrice = Convert.ToString(Convert.ToDouble(input.getPrice) + Convert.ToDouble(b.getPrice));
                b.getColor     = Color.Green;
            }
            else
            {
                input.getIngredients.Remove(b.getName);
                input.getPrice = Convert.ToString(Convert.ToDouble(input.getPrice) - Convert.ToDouble(b.getPrice));
                b.getColor     = Color.LightYellow;
            }
        }
        private void ChangeIngredient_Load(object sender, EventArgs e)
        {
            #region DODAWANIE PRZYCISKÓW AKTUALNYCH SKŁADNIKÓW PIZZY
            Point position = new Point(0, 0);
            foreach (string item in input.getIngredients)
            {
                menuButton button = new menuButton(item.ToUpper());
                button.Location = position;
                button.Click   += InputButton_Selected;
                position.X     += 85;
                panel1.Controls.Add(button);
            }

            #endregion

            #region DODAWANIE PRZYCISKÓW WSZYSTKICH DOSTEPNYCH SKŁADNIKÓW PIZZY
            int    size  = 0;
            string price = "";
            if (input.getName.Contains("32"))
            {
                size = 32;
            }
            else if (input.getName.Contains("43"))
            {
                size = 43;
            }
            position = new Point(0, 0);
            Color color = Color.White;
            ingredients = fs.getFileContent();
            foreach (string item in ingredients)
            {
                if (item.Contains("Color.") == true)
                {
                    string tmpStr = item.Remove(0, 6);
                    color = Color.FromName(tmpStr);
                }
                else if (item.Contains("32") || item.Contains("43"))
                {
                    if (item.Contains(Convert.ToString(size)))
                    {
                        string tmpStr = item.Remove(0, 3);
                        price = tmpStr;
                    }
                }
                else
                {
                    menuButton button = new menuButton(item);
                    button.getColor = color;
                    button.getPrice = price;
                    button.Location = position;
                    button.Click   += OutputButton_Selected;
                    position.X     += 85;
                    if (position.X > 800)
                    {
                        position.Y += 85;
                        position.X  = 0;
                    }
                    panel2.Controls.Add(button);
                }
            }
            position = new Point(0, 0);
            #endregion
        }