KeyHandler

package com.happykiller.weightlimit.client.keyhandling;

import org.lwjgl.input.Keyboard;

import com.happykiller.weightlimit.player.inventory.container.ContainerWeightedPlayer;
import com.happykiller.weightlimit.server.packet.PacketHandler;
import com.happykiller.weightlimit.server.packet.packets.PacketCloseGui;
import com.happykiller.weightlimit.server.packet.packets.PacketOpenGui;

import net.minecraft.client.settings.KeyBinding;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraftforge.fml.client.FMLClientHandler;
import net.minecraftforge.fml.client.registry.ClientRegistry;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import net.minecraftforge.fml.common.gameevent.InputEvent.KeyInputEvent;

public class KeyHandler {

    public static final int CUSTOM_INV = 0;

    private static final String[] desc = {"key.weight_inventory.desc"};

    private static final int[] keyValues = {Keyboard.KEY_R};

    private final KeyBinding[] keys;

    public KeyHandler() {
        keys = new KeyBinding[desc.length];

        for(int i = 0; i < desc.length; i++) {
            keys[i] = new KeyBinding(desc[i], keyValues[i], "key.weight_limit.category");

            ClientRegistry.registerKeyBinding(keys[i]);
        }
    }

    @SubscribeEvent
    public void onKeyInput(KeyInputEvent event) {
        System.out.println("Key Down");

        EntityPlayer player = FMLClientHandler.instance().getClient().thePlayer;

        if(FMLClientHandler.instance().getClient().inGameHasFocus) {
            System.out.println("Game does have focus");

            int kb = Keyboard.getEventKey();
            boolean isDown = Keyboard.getEventKeyState();

            if(kb == keys[CUSTOM_INV].getKeyCode()) {
                System.out.println(player.openContainer);

                if(player.openContainer instanceof ContainerWeightedPlayer) {
                    System.out.println("Container is open. Closing...");
                    PacketHandler.network.sendToServer(new PacketCloseGui());
                }else {
                    PacketHandler.network.sendToServer(new PacketOpenGui(CUSTOM_INV));
                    System.out.println("Packet was sent");
                }
            }
        }
    }
}