[RLVa] f9f8dbe23ec3 ported

- internal : reviewed @startim for CHUI (SL-3.5)
    -> fixed : "Start Conference Chat" on a selection of multiple calling cards opens an IM session
    -> fixed : actions that would result in an IM window opening shouldn't be blocked if the session is already open
    -> added : RlvActions class to mimick LLAvatarActions and lowering the rlvhandler.h include dependency

indra/newview/rlvactions.h

@@ -0,0 +1,42 @@
+/** 
+ *
+ * Copyright (c) 2009-2013, Kitty Barnett
+ * 
+ * The source code in this file is provided to you under the terms of the 
+ * GNU Lesser General Public License, version 2.1, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
+ * PARTICULAR PURPOSE. Terms of the LGPL can be found in doc/LGPL-licence.txt 
+ * in this distribution, or online at http://www.gnu.org/licenses/lgpl-2.1.txt
+ * 
+ * By copying, modifying or distributing this software, you acknowledge that
+ * you have read and understood your obligations described above, and agree to 
+ * abide by those obligations.
+ * 
+ */
+
+#ifndef RLV_ACTIONS_H
+#define RLV_ACTIONS_H
+
+// ============================================================================
+// RlvActions class declaration
+//
+
+class RlvActions
+{
+public:
+
+	/*
+	 * Returns true if the user is allowed to start a - P2P or group - conversation with the specified UUID.
+	 */
+	static bool canStartIM(const LLUUID& idRecipient);								// @startim and @startimto
+
+	/*
+	 * Returns true if a - P2P or group - IM session is open with the specified UUID.
+	 */
+	static bool hasOpenP2PSession(const LLUUID& idAgent);
+	static bool hasOpenGroupSession(const LLUUID& idGroup);
+};
+
+// ============================================================================
+
+#endif // RLV_ACTIONS_H