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diff --git a/src/gui/models/shopitems.h b/src/gui/models/shopitems.h
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+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2014  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GUI_MODELS_SHOPITEMS_H
+#define GUI_MODELS_SHOPITEMS_H
+
+#include "gui/models/listmodel.h"
+
+#include <string>
+#include <vector>
+
+#include "localconsts.h"
+
+class ShopItem;
+
+/**
+ * This class handles the list of items available in a shop.
+ *
+ * The addItem routine can automatically check, if an item already exists and
+ * only adds duplicates to the old item, if one is found. The original
+ * distribution of the duplicates can be retrieved from the item.
+ *
+ * This functionality can be enabled in the constructor.
+ */
+class ShopItems final : public ListModel
+{
+    public:
+        /**
+         * Constructor.
+         *
+         * @param mergeDuplicates lets the Shop look for duplicate entries and
+         *                        merges them to one item.
+         */
+        explicit ShopItems(const bool mergeDuplicates = false);
+
+        A_DELETE_COPY(ShopItems)
+
+        ~ShopItems();
+
+        /**
+         * Adds an item to the list.
+         */
+        void addItem(const int id, const unsigned char color,
+                     const int amount, const int price);
+
+        /**
+         * Adds an item to the list (used by sell dialog). Looks for
+         * duplicate entries, if mergeDuplicates was turned on.
+         *
+         * @param inventoryIndex the inventory index of the item
+         * @param id the id of the item
+         * @param quantity number of available copies of the item
+         * @param price price of the item
+         */
+        void addItem2(const int inventoryIndex, const int id,
+                      const unsigned char color,
+                      const int amount, const int price);
+
+        void addItemNoDup(const int id, const unsigned char color,
+                          const int amount, const int price);
+
+        /**
+         * Returns the number of items in the shop.
+         */
+        int getNumberOfElements() override final A_WARN_UNUSED
+        { return static_cast<int>(mShopItems.size()); }
+
+        bool empty() const A_WARN_UNUSED
+        { return mShopItems.empty(); }
+
+        /**
+         * Returns the name of item number i in the shop.
+         *
+         * @param i the index to retrieve
+         */
+        std::string getElementAt(int i) override final A_WARN_UNUSED;
+
+        /**
+         * Returns the item number i in the shop.
+         */
+        ShopItem *at(unsigned int i) const A_WARN_UNUSED;
+
+        /**
+         * Removes an element from the shop.
+         *
+         * @param i index to remove
+         */
+        void erase(const unsigned int i);
+
+        /**
+         * Removes an element from the shop and destroy it.
+         *
+         * @param i index to remove
+         */
+        void del(const unsigned int i);
+
+        /**
+         * Clears the list of items in the shop.
+         */
+        void clear();
+
+        std::vector<ShopItem*> &items() A_WARN_UNUSED
+        { return mShopItems; }
+
+    private:
+        /**
+         * Searches the current items in the shop for the specified
+         * id and returns the item if found, or 0 else.
+         * 
+         * @return the item found or 0
+         */
+        ShopItem *findItem(const int id,
+                           const unsigned char color) const A_WARN_UNUSED;
+
+        /** The list of items in the shop. */
+        std::vector<ShopItem*> mShopItems;
+
+        /** Look for duplicate entries on addition. */
+        bool mMergeDuplicates;
+};
+
+#endif  // GUI_MODELS_SHOPITEMS_H