1 files changed, 6 insertions, 1 deletions
diff --git a/main.h b/main.h
index 67b7024..52f94e6 100644
--- a/main.h
+++ b/main.h
@@ -121,7 +121,7 @@ public:
         splat->setColorScale(getColorScale(colorScaleType));
     }
 
-    // Pointer to visual components whose values are set in the main() function
+    // Pointers to visual components whose values are set in the main() function
     // after components are instantiated by the QtQuick engine
     BarChart *cpBarChart, *rpBarChart;
     Colormap *colormap;
@@ -130,6 +130,11 @@ public:
 
     ProjectionObserver *projectionObserver;
 
+    // Shared object that controls manipulation history
+    ProjectionHistory *projectionHistory;
+    Q_INVOKABLE void undoManipulation()  { projectionHistory->undo(); }
+    Q_INVOKABLE void resetManipulation() { projectionHistory->undoAll(); }
+
 public slots:
     void setCPIndices(const arma::uvec &indices) { m_cpIndices = indices; }
     void setCP(const arma::mat &cp) {