ConfirmableUsableItem.patch

diff --git a/Empire/src/main/java/com/empireminecraft/data/items/PromoItems.java b/Empire/src/main/java/com/empireminecraft/data/items/PromoItems.java
index 9e1522c..f1d19f3 100644
--- a/Empire/src/main/java/com/empireminecraft/data/items/PromoItems.java
+++ b/Empire/src/main/java/com/empireminecraft/data/items/PromoItems.java
@@ -2,7 +2,12 @@ package com.empireminecraft.data.items;
 
 import com.empireminecraft.features.EmpireVault;
 import com.empireminecraft.features.horses.Stable;
-import com.empireminecraft.features.items.*;
+import com.empireminecraft.features.items.ConfirmableUsableItem;
+import com.empireminecraft.features.items.CustomItem;
+import com.empireminecraft.features.items.EmpireFirework;
+import com.empireminecraft.features.items.SpecialProjectile;
+import com.empireminecraft.features.items.UsableBowItem;
+import com.empireminecraft.features.items.UsableItem;
 import com.empireminecraft.util.ItemUtil;
 import com.empireminecraft.util.Util;
 import org.bukkit.Color;
@@ -16,7 +21,8 @@ import org.bukkit.inventory.ItemStack;
 import org.bukkit.potion.PotionEffectType;
 
 public class PromoItems {
-    public static final UsableItem VAULT_VOUCHER = new UsableItem("VaultVoucher", Material.EMPTY_MAP) {
+    public static final UsableItem VAULT_VOUCHER = new ConfirmableUsableItem("VaultVoucher", Material.EMPTY_MAP,
+        "&3Gives 1 free vault page increase.") {
         {
             this.consumeOnUse = true;
             ItemUtil.buildLore(this).setName("&aVault Voucher").makeSoulbound()
@@ -31,13 +37,15 @@ public class PromoItems {
         }
 
         @Override
-        public ItemStack onUse(Player player, ItemStack item) {
+        public ItemStack onConfirm(Player player, ItemStack item) {
             EmpireVault.expandVault(player, player.getName(), true, true);
             return item;
         }
     };
+
     public static final UsableItem
-        STABLE_VOUCHER = new UsableItem("StableVoucher", Material.EMPTY_MAP) {
+        STABLE_VOUCHER = new ConfirmableUsableItem("StableVoucher", Material.EMPTY_MAP,
+            "&3Permanently raises stables size by 1.") {
         {
             this.consumeOnUse = true;
             ItemUtil.buildLore(this).setName("&aStable Voucher").makeSoulbound()
@@ -49,7 +57,7 @@ public class PromoItems {
         }
 
         @Override
-        public ItemStack onUse(Player player, ItemStack item) {
+        public ItemStack onConfirm(Player player, ItemStack item) {
             if (!Stable.getStable(player).increaseMaxStables()) {
                 return null;
             }
diff --git a/Empire/src/main/java/com/empireminecraft/features/items/ConfirmableUsableItem.java b/Empire/src/main/java/com/empireminecraft/features/items/ConfirmableUsableItem.java
new file mode 100644
index 0000000..8f38daf
--- /dev/null
+++ b/Empire/src/main/java/com/empireminecraft/features/items/ConfirmableUsableItem.java
@@ -0,0 +1,49 @@
+package com.empireminecraft.features.items;
+
+import com.empireminecraft.systems.chestui.ChestUI;
+import com.empireminecraft.systems.chestui.ConfirmChestInterface;
+import com.google.common.base.Predicate;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+import javax.annotation.Nullable;
+
+public abstract class ConfirmableUsableItem extends UsableItem {
+    public String[] loreLines = null;
+    public ConfirmableUsableItem(String name, Material type, String... loreLines) {
+        super(name, type);
+        this.loreLines = loreLines;
+    }
+
+    public ConfirmableUsableItem(String name, Material type, short durability, String... loreLines) {
+        super(name, type, durability);
+        this.loreLines = loreLines;
+    }
+
+    public ConfirmableUsableItem(String name, ItemStack stack, String... loreLines) throws IllegalArgumentException {
+        super(name, stack);
+        this.loreLines = loreLines;
+    }
+
+    @Override
+    public ItemStack onUse(final Player player, final ItemStack item) {
+        final int slot = player.getInventory().getHeldItemSlot();
+        ChestUI.open(player, new ConfirmChestInterface("Confirm Item Use",
+            new Predicate<Player>() {
+                @Override
+                public boolean apply(@Nullable Player input) {
+                    final ItemStack nowInHand = player.getInventory().getItem(slot);
+                    if (nowInHand.isSimilar(item) && nowInHand.getAmount() > 0) {
+                        ItemStack res = onConfirm(player, nowInHand);
+                        res = UsableItem.postConsumableUse(player, res);
+                        player.getInventory().setItem(slot, res);
+                    }
+                    return true;
+                }
+            }, loreLines));
+        return null;
+    }
+
+    public abstract ItemStack onConfirm(Player player, ItemStack item);
+}
diff --git a/Empire/src/main/java/com/empireminecraft/features/items/UsableItem.java b/Empire/src/main/java/com/empireminecraft/features/items/UsableItem.java
index bf4b957..a1a61a9 100644
--- a/Empire/src/main/java/com/empireminecraft/features/items/UsableItem.java
+++ b/Empire/src/main/java/com/empireminecraft/features/items/UsableItem.java
@@ -101,17 +101,21 @@ public abstract class UsableItem extends CustomItem {
             player.updateInventory();
         } else {
             if (consumeOnUse) {
-                item.setAmount(item.getAmount() - 1);
-                player.setItemInHand(item);
                 event.setCancelled(true);
-                player.updateInventory();
-
-                return;
+                res = postConsumableUse(player, res);
+                player.setItemInHand(res);
             }
+
             event.setItem(res);
         }
     }
 
+    public static ItemStack postConsumableUse(Player player, ItemStack item) {
+        item.setAmount(item.getAmount() - 1);
+        player.updateInventory();
+        return item;
+    }
+
     public void onDispense(BlockDispenseEvent event) {
         ItemStack item = event.getItem();
         if (infinite) {
diff --git a/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUI.java b/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUI.java
index 6583e91..fa51752 100644
--- a/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUI.java
+++ b/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUI.java
@@ -32,9 +32,16 @@ public class ChestUI extends BukkitUtil.Listener {
             ((ChestInterfaceItem) o).processClick();
         }
     }
-    public static void open (Player player, Class <? extends ChestUIInterface> ui) {
+    public static void open(Player player, Class <? extends ChestUIInterface> ui) {
         try {
-            final Inventory inventory = ui.newInstance().initialize(player);
+            open(player, ui.newInstance());
+        } catch (Exception e) {
+            Util.printException(e);
+        }
+    }
+    public static void open(Player player, ChestUIInterface ui) {
+        try {
+            final Inventory inventory = ui.initialize(player);
             inventory.getMeta().put("ChestUI", 1);
             player.openInventory(inventory);
         } catch (Exception e) {
diff --git a/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUIInterface.java b/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUIInterface.java
index 85b0a2c..a3b1072 100644
--- a/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUIInterface.java
+++ b/Empire/src/main/java/com/empireminecraft/systems/chestui/ChestUIInterface.java
@@ -17,9 +17,9 @@ public abstract class ChestUIInterface {
         return "ChestUI_Slot_" + slot;
     }
 
-    abstract int getSize();
-    abstract String getTitle();
-    abstract void init(Player player, Inventory inventory);
+    public abstract int getSize();
+    public abstract String getTitle();
+    public abstract void init(Player player, Inventory inventory);
 
     protected int slot = 0;
     protected final Inventory initialize(Player player) {
@@ -37,6 +37,9 @@ public abstract class ChestUIInterface {
         return player;
     }
 
+    public ChestInterfaceItem add(int slot, Material material, short data) {
+        return add(slot, new ItemStack(material, 1, data));
+    }
     public ChestInterfaceItem add(Material material, short data) {
         return add(slot, new ItemStack(material, 1, data));
     }
diff --git a/Empire/src/main/java/com/empireminecraft/systems/chestui/ConfirmChestInterface.java b/Empire/src/main/java/com/empireminecraft/systems/chestui/ConfirmChestInterface.java
new file mode 100644
index 0000000..0e00edf
--- /dev/null
+++ b/Empire/src/main/java/com/empireminecraft/systems/chestui/ConfirmChestInterface.java
@@ -0,0 +1,83 @@
+package com.empireminecraft.systems.chestui;
+
+import com.empireminecraft.util.ItemUtil;
+import com.google.common.base.Predicate;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.Inventory;
+
+import javax.annotation.Nullable;
+
+public class ConfirmChestInterface extends ChestUIInterface {
+
+    private final String confirmTitle;
+    private final Predicate<Player> onConfirm;
+    private final Predicate<Player> onCancel;
+    private final String[] lines;
+
+
+    public ConfirmChestInterface(String confirmTitle, Predicate<Player> onConfirm, String... lines) {
+        this(confirmTitle, onConfirm, null, lines);
+    }
+
+    public ConfirmChestInterface(
+        String confirmTitle, Predicate<Player> onConfirm, Predicate<Player> onCancel, String... lines) {
+        this.confirmTitle = confirmTitle;
+        this.onConfirm = onConfirm;
+        this.onCancel = onCancel;
+        this.lines = lines;
+    }
+
+    @Override
+    public int getSize() {
+        return 9;
+    }
+
+    @Override
+    public String getTitle() {
+        return confirmTitle;
+    }
+
+    @Override
+    public void init(final Player player, Inventory inventory) {
+        final ItemUtil.LoreBuilder builder = add(Material.PAPER)
+            .setName(confirmTitle);
+
+        if (lines != null) {
+            for (String line : lines) {
+                builder.add(line);
+            }
+        }
+
+        builder
+            .empty()
+            .add("&eClick on the &2Green Wool&e to confirm.")
+            .add("&eClick on the &4Red Wool&e to cancel.")
+            .save();
+
+        add(3, Material.WOOL, (short) 13)
+            .onClick(new Predicate<Player>() {
+                @Override
+                public boolean apply(@Nullable Player input) {
+                    player.closeInventory();
+                    return onConfirm.apply(input);
+                }
+            })
+            .setName("&2Confirm")
+            .add("&2Click to Confirm")
+            .save();
+
+        add(5, Material.WOOL, (short) 14)
+            .onClick(new Predicate<Player>() {
+                @Override
+                public boolean apply(@Nullable Player input) {
+                    player.closeInventory();
+                    return onCancel == null || onCancel.apply(input);
+                }
+            })
+            .setName("&4Cancel")
+            .add("&4Click to Cancel")
+            .save();
+
+    }
+}
diff --git a/Empire/src/main/java/com/empireminecraft/systems/chestui/EmpireAssistantUI.java b/Empire/src/main/java/com/empireminecraft/systems/chestui/EmpireAssistantUI.java
index 9576e84..9ba73a9 100644
--- a/Empire/src/main/java/com/empireminecraft/systems/chestui/EmpireAssistantUI.java
+++ b/Empire/src/main/java/com/empireminecraft/systems/chestui/EmpireAssistantUI.java
@@ -14,17 +14,17 @@ import javax.annotation.Nullable;
 
 public class EmpireAssistantUI extends ChestUIInterface {
     @Override
-    int getSize() {
+    public int getSize() {
         return 27;
     }
 
     @Override
-    String getTitle() {
+    public String getTitle() {
         return "Empire Assistant";
     }
 
     @Override
-    void init(final Player player, Inventory inventory) {
+    public void init(final Player player, Inventory inventory) {
         if (Util.isTeleportableLocation(player)) {
             add(Material.DIAMOND_SWORD)
                 .onClick("frontier")
diff --git a/Empire/src/main/java/com/empireminecraft/systems/chestui/ServerSwitcher.java b/Empire/src/main/java/com/empireminecraft/systems/chestui/ServerSwitcher.java
index 743f51f..c564d6f 100644
--- a/Empire/src/main/java/com/empireminecraft/systems/chestui/ServerSwitcher.java
+++ b/Empire/src/main/java/com/empireminecraft/systems/chestui/ServerSwitcher.java
@@ -13,17 +13,17 @@ import javax.annotation.Nullable;
 public class ServerSwitcher extends ChestUIInterface {
 
     @Override
-    int getSize() {
+    public int getSize() {
         return 27;
     }
 
     @Override
-    String getTitle() {
+    public String getTitle() {
         return "Server Switcher";
     }
 
     @Override
-    void init(Player player, Inventory inventory) {
+    public void init(Player player, Inventory inventory) {
         addServer(Material.WOOL, 0, EmpireServer.SMP1, "This is a Survival Server");
         addServer(Material.WOOL, 1, EmpireServer.SMP2, "This is a Survival Server");
         addServer(Material.WOOL, 2, EmpireServer.SMP3, "This is a Survival Server");