MainGUIListener

package me.roboticplayer.superadmin.listeners;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;

import me.roboticplayer.superadmin.inventories.MainGUI;

public class MainGUIListener implements Listener {

    private MainGUI instance;

    public MainGUIListener(MainGUI instance) {
        this.instance = instance;
    }

    @EventHandler
    public void onInventoryClick(InventoryClickEvent e) {
        Player p = (Player) e.getWhoClicked();
        if (!e.getInventory().equals(instance.getMainInv())) {
            Bukkit.broadcastMessage("Inventory isn't ''Main Inv''");
            return;
        }
        if (e.getCurrentItem() == null)
            return;
        if (e.getCursor() == null)
            return;
        if (e.getCurrentItem().equals(instance.labelItem()) && e.getSlot() == 4) {
            Bukkit.broadcastMessage("Item is label");
            e.setCancelled(true);
        } else if (e.getCurrentItem().equals(instance.chatItem()) && e.getSlot() == 9) {
            Bukkit.broadcastMessage("Item is Chat Item");
            e.setCancelled(true);
            p.openInventory(instance.getChatInv());
        } else if (e.getCurrentItem().equals(instance.inventoryItem()) && e.getSlot() == 11) {
            Bukkit.broadcastMessage("Item is Inventory Item");
            e.setCancelled(true);
            p.openInventory(instance.getInventoryInv());
        } else if (e.getCurrentItem().equals(instance.otherItem()) && e.getSlot() == 13) {
            Bukkit.broadcastMessage("Item is Other Item");
            e.setCancelled(true);
            p.openInventory(instance.getOtherInv());
        } else if (e.getCurrentItem().equals(instance.playerItem()) && e.getSlot() == 15) {
            Bukkit.broadcastMessage("Item is Player Item");
            e.setCancelled(true);
            p.openInventory(instance.getPlayerInv());
        } else if (e.getCurrentItem().equals(instance.worldItem()) && e.getSlot() == 17) {
            Bukkit.broadcastMessage("Item is World Item");
            e.setCancelled(true);
            p.openInventory(instance.getWorldInv());
        } else {
            Bukkit.broadcastMessage("Item is none of the above");
            return;
        }
    }
}