1 files changed, 15 insertions, 0 deletions
diff --git a/indra/newview/rlvhandler.h b/indra/newview/rlvhandler.h
index a5e91548ef..7fa4da767a 100644
--- a/indra/newview/rlvhandler.h
+++ b/indra/newview/rlvhandler.h
@@ -13,6 +13,8 @@ class LLViewerObject;
 
 class RlvHandler : public LLSingleton<RlvHandler>
 {
+    template<Rlv::EParamType> friend struct Rlv::CommandHandlerBaseImpl;
+
     LLSINGLETON_EMPTY_CTOR(RlvHandler);
 
     /*
@@ -25,12 +27,25 @@ public:
 protected:
     Rlv::ECmdRet processCommand(std::reference_wrapper<const RlvCommand> rlvCmdRef, bool fromObj);
 
+    /*
+     * Helper functions
+     */
 public:
     // Initialization (deliberately static so they can safely be called in tight loops)
     static bool canEnable();
     static bool isEnabled() { return mIsEnabled; }
     static bool setEnabled(bool enable);
 
+    /*
+     * Event handling
+     */
+public:
+    // The command output signal is triggered whenever a command produces channel or debug output
+    using command_output_signal_t = boost::signals2::signal<void (const RlvCommand&, S32, const std::string&)>;
+    boost::signals2::connection setCommandOutputCallback(const command_output_signal_t::slot_type& cb) { return mOnCommandOutput.connect(cb); }
+
+protected:
+    command_output_signal_t mOnCommandOutput;
 private:
     static bool mIsEnabled;
 };