GlobalInventoryPlugin.java

package com.thebukkitarea.globalInventory;

import java.util.Map.Entry;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.configuration.MemorySection;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.java.JavaPlugin;

public class GlobalInventoryPlugin extends JavaPlugin {

    private Inventory global;

    @Override
    public void onEnable() {
        global = Bukkit.createInventory(null, 9*6, "Global Inventory");
        loadInventoryFromConfig();
    }

    @Override
    public void onDisable() {
        saveInventoryToConfig();
    }

    @Override
    public boolean onCommand(CommandSender sender, Command command,
            String label, String[] args) {

        if (!(sender instanceof Player)) {
            sender.sendMessage("You can't use this command.");
            return true;
        }

        Player player = (Player) sender;
        player.openInventory(global);

        return true;
    }

    private void clearConfig() {
        for (String main_path : getConfig().getKeys(false)) {
            getConfig().set(main_path, null);
        }
    }

    private void saveInventoryToConfig() {
        clearConfig();

        for (int slot = 0; slot < global.getSize(); slot++) {
            ItemStack stack = global.getItem(slot);

            if (stack == null || stack.getType() == Material.AIR) {
                continue;
            }

            getConfig().set(String.valueOf(slot), stack.serialize());
        }

        saveConfig();
    }

    private void loadInventoryFromConfig() {
        for (Entry<String, Object> entry : getConfig().getValues(false).entrySet()) {
            int slot;

            try { slot = Integer.parseInt(entry.getKey()); }
            catch (NumberFormatException ex) {
                getLogger().severe("An error has occurred while parsing slot " + entry.getKey());
                continue;
            }

            if (slot + 1 >= global.getSize()) {
                getLogger().severe("Slot " + slot + " cannot be in the inventory");
                continue;
            }

            MemorySection memorySection = (MemorySection) entry.getValue();

            ItemStack deserialized = ItemStack.deserialize(memorySection.getValues(false));

            global.setItem(slot, deserialized);
        }
    }
}