From 77efbb50066a030d1f44f8de8d06ace9f284e3a2 Mon Sep 17 00:00:00 2001
From: Bjørn Lindeijer <bjorn@lindeijer.nl>
Date: Sun, 3 Sep 2006 15:00:47 +0000
Subject: Introduced SelectionListener to fix updating problem in inventory
 window (should also be used to fix similar problem in trade, buy and sell
 dialogs). Made the ItemInfo be passed around as a reference instead of a
 pointer, since it is never NULL.

---
 src/gui/itemcontainer.h | 35 ++++++++++++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

(limited to 'src/gui/itemcontainer.h')

diff --git a/src/gui/itemcontainer.h b/src/gui/itemcontainer.h
index f52f37ec..a2d5f0f7 100644
--- a/src/gui/itemcontainer.h
+++ b/src/gui/itemcontainer.h
@@ -27,9 +27,12 @@
 #include <guichan/mouselistener.hpp>
 #include <guichan/widget.hpp>
 
+#include <list>
+
 class Image;
 class Inventory;
 class Item;
+class SelectionListener;
 
 /**
  * An item container. Used to show items in inventory and trade dialog.
@@ -76,16 +79,46 @@ class ItemContainer : public gcn::Widget, public gcn::MouseListener
         Item* getItem();
 
         /**
-         * Set selected item to -1.
+         * Sets selected item to NULL.
          */
         void selectNone();
 
+        /**
+         * Adds a listener to the list that's notified each time a change to
+         * the selection occurs.
+         */
+        void addSelectionListener(SelectionListener *listener)
+        {
+            mListeners.push_back(listener);
+        }
+
+        /**
+         * Removes a listener from the list that's notified each time a change
+         * to the selection occurs.
+         */
+        void removeSelectionListener(SelectionListener *listener)
+        {
+            mListeners.remove(listener);
+        }
+
     private:
+        /**
+         * Sets the currently selected item.
+         */
+        void setSelectedItem(Item *item);
+
+        /**
+         * Sends out selection events to the list of selection listeners.
+         */
+        void fireSelectionChangedEvent();
+
         Inventory *mInventory;
         Image *mSelImg;
         Item *mSelectedItem;
 
         int mMaxItems;
+
+        std::list<SelectionListener*> mListeners;
 };
 
 #endif
-- 
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