Finish of first GUI-API

src/de/steamwar/inventory/SWInventory.java

@@ -4,7 +4,6 @@ import de.warking.hunjy.Core;
 import org.bukkit.Bukkit;
 import org.bukkit.Location;
 import org.bukkit.Material;
-import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -15,7 +14,6 @@ import org.bukkit.event.inventory.InventoryType;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryHolder;
 import org.bukkit.inventory.ItemStack;
-import org.bukkit.inventory.meta.ItemMeta;
 
 import java.util.*;
 
@@ -36,23 +34,28 @@ public class SWInventory implements Listener, Inventory {
         Bukkit.getPluginManager().registerEvents(this, Core.getInstance());
     }
 
+    public SWInventory(Player p, int size, String t, Map<Integer, SWItem> items){
+        this(p, size, t);
+        items.forEach(this::setItem);
+        open();
+    }
+
     public void addCloseCallback(InvCallback c){
         callbacks.put(-1, c);
     }
 
+    public void setItem(int pos, SWItem item){
+        contents[pos] = item.getItemStack();
+        callbacks.put(pos, item.getCallback());
+    }
+
     public void setItem(int pos, Material m, String name, InvCallback c){
-        setItem(pos, m, name, null, false, c);
+        setItem(pos, m, name, new ArrayList<>(), false, c);
     }
 
     public void setItem(int pos, Material m, String name, List<String> lore, boolean e, InvCallback c){
-        contents[pos] = new ItemStack(m, 1, (short)0);
-        ItemMeta im = contents[pos].getItemMeta();
-        im.setDisplayName(name);
-        im.setLore(lore);
-        if(e)
-            im.addEnchant(Enchantment.DURABILITY , 10, true);
-        contents[pos].setItemMeta(im);
-        callbacks.put(pos, c);
+        SWItem item = new SWItem(m, name, lore, e, c);
+        setItem(pos, item);
     }
 
     public void open(){

src/de/steamwar/inventory/SWItem.java

@@ -0,0 +1,78 @@
+package de.steamwar.inventory;
+
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+
+import java.util.List;
+
+public class SWItem {
+
+    private ItemStack itemStack;
+    private ItemMeta itemMeta;
+    private InvCallback callback;
+
+    public SWItem(){
+        itemStack = new ItemStack(Material.AIR);
+        itemMeta = itemStack.getItemMeta();
+    }
+
+    public SWItem(Material material, String name, List<String> lore, boolean enchanted, InvCallback c){
+        itemStack = new ItemStack(material, 1, (short)0);
+        itemMeta = itemStack.getItemMeta();
+        itemMeta.setDisplayName(name);
+        if(lore != null && !lore.isEmpty())
+            itemMeta.setLore(lore);
+        if(enchanted)
+            itemMeta.addEnchant(Enchantment.DURABILITY , 10, true);
+        itemStack.setItemMeta(itemMeta);
+        callback = c;
+    }
+
+    public ItemStack getItemStack() {
+        return itemStack;
+    }
+
+    public void setItemStack(ItemStack itemStack) {
+        this.itemStack = itemStack;
+        this.itemMeta = itemStack.getItemMeta();
+    }
+
+    public ItemMeta getItemMeta() {
+        return itemMeta;
+    }
+
+    public void setItemMeta(ItemMeta itemMeta) {
+        this.itemMeta = itemMeta;
+        this.itemStack.setItemMeta(itemMeta);
+    }
+
+    public InvCallback getCallback() {
+        return callback;
+    }
+
+    public void setCallback(InvCallback callback) {
+        this.callback = callback;
+    }
+
+    public void setName(String name){
+        itemMeta.setDisplayName(name);
+        itemStack.setItemMeta(itemMeta);
+    }
+
+    public void setLore(List<String> lore){
+        itemMeta.setLore(lore);
+        itemStack.setItemMeta(itemMeta);
+    }
+
+    public void setEnchanted(boolean enchanted){
+        if(enchanted){
+            itemMeta.addEnchant(Enchantment.DURABILITY , 10, true);
+            itemStack.setItemMeta(itemMeta);
+        }else{
+            itemMeta.removeEnchant(Enchantment.DURABILITY);
+            itemStack.setItemMeta(itemMeta);
+        }
+    }
+}