3 files changed, 22 insertions, 1 deletions
diff --git a/indra/newview/llnotificationhandler.h b/indra/newview/llnotificationhandler.h
index 1f5cff2505..62daf5f105 100644
--- a/indra/newview/llnotificationhandler.h
+++ b/indra/newview/llnotificationhandler.h
@@ -298,6 +298,13 @@ public:
 	static bool canSpawnSessionAndLogToIM(const LLNotificationPtr& notification);
 
 	/**
+	 * Checks if passed notification can create toast.
+	 *
+	 * It returns false only for inventory accepted/declined notifications if respective IM window is open (EXT-5909)
+	 */
+	static bool canSpawnToast(const LLNotificationPtr& notification);
+
+	/**
 	 * Determines whether IM floater is opened.
 	 */
 	static bool isIMFloaterOpened(const LLNotificationPtr& notification);
diff --git a/indra/newview/llnotificationhandlerutil.cpp b/indra/newview/llnotificationhandlerutil.cpp
index 1f08756859..741d08af1e 100644
--- a/indra/newview/llnotificationhandlerutil.cpp
+++ b/indra/newview/llnotificationhandlerutil.cpp
@@ -165,7 +165,6 @@ bool LLHandlerUtil::canSpawnIMSession(const LLNotificationPtr& notification)
 {
 	return OFFER_FRIENDSHIP == notification->getName()
 			|| USER_GIVE_ITEM == notification->getName()
-			|| INVENTORY_DECLINED == notification->getName()
 			|| TELEPORT_OFFERED == notification->getName();
 }
 
@@ -184,6 +183,15 @@ bool LLHandlerUtil::canSpawnSessionAndLogToIM(const LLNotificationPtr& notificat
 }
 
 // static
+bool LLHandlerUtil::canSpawnToast(const LLNotificationPtr& notification)
+{
+	bool cannot_spawn = isIMFloaterOpened(notification) && (INVENTORY_DECLINED == notification->getName()
+			|| INVENTORY_ACCEPTED == notification->getName());
+	
+	return !cannot_spawn;
+}
+
+// static
 bool LLHandlerUtil::isIMFloaterOpened(const LLNotificationPtr& notification)
 {
 	bool res = false;
diff --git a/indra/newview/llnotificationtiphandler.cpp b/indra/newview/llnotificationtiphandler.cpp
index 4e2c5085ed..1f1afe293a 100644
--- a/indra/newview/llnotificationtiphandler.cpp
+++ b/indra/newview/llnotificationtiphandler.cpp
@@ -150,6 +150,12 @@ bool LLTipHandler::processNotification(const LLSD& notify)
 			LLHandlerUtil::spawnIMSession(name, from_id);
 		}
 
+		// don't spawn toast for inventory accepted/declined offers if respective IM window is open (EXT-5909)
+		if (!LLHandlerUtil::canSpawnToast(notification))
+		{
+			return true;
+		}
+
 		LLToastPanel* notify_box = NULL;
 		if("FriendOffline" == notification->getName() || "FriendOnline" == notification->getName())
 		{