ItemButton.class

    //TODO: temporary inner class, remove later [TEST]
    private final class ItemButton extends GuiButton{
        private ItemStack item;

        public ItemButton(int buttonId, int x, int y, String buttonText, ItemStack i) {
            super(buttonId, x, y, 16, 16, buttonText);
            item = new ItemStack(i.getItem(), 1, i.getMetadata());
        }

        @Override
        public void drawButton(Minecraft mc, int mouseX, int mouseY){
            if (item != null && item.getItem() != null){
                drawItem();
            }
        }

        private void drawItem(){
            itemRender.renderItemOverlayIntoGUI(fontRendererObj, item, this.xPosition, this.yPosition, "This is a particularly interesting test.");
        }

        public ItemStack getItemStack(){
            return item;
        }
    }