--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/API/Commands/AbstractReplaceUnitEquipmentCommand.cs	Sun Apr 03 18:50:32 2011 +0000
@@ -0,0 +1,74 @@
+// This file (AbstractReplaceUnitEquipmentCommand.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2009 IBBoard.
+//
+// The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
+
+using System;
+using IBBoard.Commands;
+using IBBoard.Lang;
+using IBBoard.WarFoundry.API.Objects;
+
+namespace IBBoard.WarFoundry.API.Commands
+{
+	/// <summary>
+	/// An abstract implementation of the core method for replacing one equipment item with another
+	/// </summary>
+	public abstract class AbstractReplaceUnitEquipmentCommand : Command
+	{
+		private SetUnitEquipmentNumericAmountCommand removeOldCommand;
+		private AbstractSetUnitEquipmentAmountCommand addNewCommand;
+
+		public AbstractReplaceUnitEquipmentCommand(Unit unit, UnitEquipmentItem oldItem, AbstractSetUnitEquipmentAmountCommand addNewEquipmentCommand)
+		{
+			//We can get away with a numeric amount here even if it is a ratio item because we're setting it to 0
+			removeOldCommand = new SetUnitEquipmentNumericAmountCommand(unit, oldItem, 0);
+			addNewCommand = addNewEquipmentCommand;
+		}
+
+		public override bool CanExecute()
+		{
+			return removeOldCommand.CanExecute() && addNewCommand.CanExecute();
+		}
+
+		public override string Description
+		{
+			get
+			{
+				return Translation.GetTranslation("replaceUnitEquipmentCommandDescription", "replace {0} with {1} for {2}", removeOldCommand.EquipItem.Name, addNewCommand.EquipItem.Name, removeOldCommand.Unit.Name);
+			}
+		}
+
+		public override string UndoDescription
+		{
+			get
+			{
+				return Translation.GetTranslation("replaceUnitEquipmentCommandUndoDescription", "replace {0} with {1} for {2}", addNewCommand.EquipItem.Name, removeOldCommand.EquipItem.Name, removeOldCommand.Unit.Name);
+			}
+		}
+
+		public override bool Execute()
+		{
+			this.Redo();
+			return true;
+		}
+
+		public override void Redo()
+		{
+			removeOldCommand.Redo();
+			addNewCommand.Redo();
+		}
+
+		public override void Undo()
+		{
+			addNewCommand.Undo();
+			removeOldCommand.Undo();
+		}
+
+		public override string Name
+		{
+			get
+			{
+				return "Replace required equipment";
+			}
+		}
+	}
+}