Possible sign refactor?

Essentials/src/com/earth2me/essentials/Trade.java

@@ -97,37 +97,31 @@ public class Trade
 
 	public void pay(final IUser user)
 	{		
-		pay(user, true);
+		try
+		{
+			pay(user, true);
+		}
+		catch (ChargeException ex)
+		{
+			//This should never ever get here... true above means items get dropped.			
+			user.sendMessage(ex.getMessage());
+		}
 	}
 
-	public boolean pay(final IUser user, final boolean dropItems)
+	public void pay(final IUser user, final boolean dropItems) throws ChargeException
 	{
-		boolean success = true;
 		if (getMoney() != null && getMoney() > 0)
 		{
 			user.giveMoney(getMoney());
 		}
 		if (getItemStack() != null)
 		{
-			if (dropItems)
+			user.giveItems(itemStack, dropItems);
-			{
-				final Map<Integer, ItemStack> leftOver = InventoryWorkaround.addItem(user.getInventory(), true, getItemStack());
-				for (ItemStack itemStack : leftOver.values())
-				{
-					InventoryWorkaround.dropItem(user.getLocation(), itemStack);
-				}
-			}
-			else
-			{
-				success = InventoryWorkaround.addAllItems(user.getInventory(), true, getItemStack());
-			}
-			user.updateInventory();
 		}
 		if (getExperience() != null)
 		{
 			SetExpFix.setTotalExperience(user, SetExpFix.getTotalExperience(user) + getExperience());
 		}
-		return success;
 	}
 
 	public void charge(final IUser user) throws ChargeException

Essentials/src/com/earth2me/essentials/api/IUser.java

@@ -1,5 +1,6 @@
 package com.earth2me.essentials.api;
 
+import com.earth2me.essentials.ChargeException;
 import com.earth2me.essentials.storage.IStorageObjectHolder;
 import com.earth2me.essentials.user.CooldownException;
 import com.earth2me.essentials.user.UserData;
@@ -30,9 +31,9 @@ public interface IUser extends Player, IStorageObjectHolder<UserData>, IReload,
 
 	void giveMoney(double value, CommandSender initiator);
 	
-	void giveItems(ItemStack itemStack, Boolean canSpew);
+	void giveItems(ItemStack itemStack, Boolean canSpew) throws ChargeException;
 	
-	void giveItems(List<ItemStack> itemStacks, Boolean canSpew);
+	void giveItems(List<ItemStack> itemStacks, Boolean canSpew) throws ChargeException;
 
 	void setMoney(double value);
 

Essentials/src/com/earth2me/essentials/user/User.java

@@ -1,5 +1,6 @@
 package com.earth2me.essentials.user;
 
+import com.earth2me.essentials.ChargeException;
 import com.earth2me.essentials.Console;
 import static com.earth2me.essentials.I18n._;
 import com.earth2me.essentials.Teleport;
@@ -654,7 +655,7 @@ public class User extends UserBase implements IUser
 	}
 
 	@Override
-	public void giveItems(ItemStack itemStack, Boolean canSpew)
+	public void giveItems(ItemStack itemStack, Boolean canSpew) throws ChargeException
 	{
 		if (giveItemStack(itemStack, canSpew))
 		{
@@ -663,7 +664,7 @@ public class User extends UserBase implements IUser
 	}
 
 	@Override
-	public void giveItems(List<ItemStack> itemStacks, Boolean canSpew)
+	public void giveItems(List<ItemStack> itemStacks, Boolean canSpew) throws ChargeException
 	{
 		boolean spew = false;
 		for (ItemStack itemStack : itemStacks)
@@ -679,7 +680,7 @@ public class User extends UserBase implements IUser
 		}
 	}
 
-	private boolean giveItemStack(ItemStack itemStack, Boolean canSpew)
+	private boolean giveItemStack(ItemStack itemStack, Boolean canSpew) throws ChargeException
 	{
 		boolean spew = false;
 		
@@ -710,6 +711,11 @@ public class User extends UserBase implements IUser
 				spew = true;
 			}
 		}
+		else {
+			if (!overfilled.isEmpty()) {
+				throw new ChargeException("Inventory full");
+			}
+		}
 		return spew;
 	}
 }

EssentialsSigns/src/com/earth2me/essentials/signs/SignBuy.java

@@ -27,10 +27,7 @@ public class SignBuy extends EssentialsSign
 		final Trade items = getTrade(sign, 1, 2, player, ess);
 		final Trade charge = getTrade(sign, 3, ess);
 		charge.isAffordableFor(player);
-		if (!items.pay(player, false))
+		items.pay(player, false);
-		{
-			throw new ChargeException("Inventory full");
-		}
 		charge.charge(player);
 		Trade.log("Sign", "Buy", "Interact", username, charge, username, items, sign.getBlock().getLocation(), ess);
 		return true;

EssentialsSigns/src/com/earth2me/essentials/signs/SignTrade.java

@@ -55,10 +55,7 @@ public class SignTrade extends EssentialsSign
 			final Trade charge = getTrade(sign, 1, false, false, ess);
 			final Trade trade = getTrade(sign, 2, false, true, ess);
 			charge.isAffordableFor(player);
-			if (!trade.pay(player, false))
+			trade.pay(player, false);			
-			{
-				throw new ChargeException("Full inventory");
-			}
 			substractAmount(sign, 2, trade, ess);
 			addAmount(sign, 1, charge, ess);
 			charge.charge(player);