diff --git a/src/libslic3r/SLA/SLASupportTree.cpp b/src/libslic3r/SLA/SLASupportTree.cpp
index 66ec0d5edd..9ebaa98e0a 100644
--- a/src/libslic3r/SLA/SLASupportTree.cpp
+++ b/src/libslic3r/SLA/SLASupportTree.cpp
@@ -1635,6 +1635,12 @@ SlicedSupports SLASupportTree::slice(float layerh, float init_layerh) const
     return {};
 }
 
+// Here we should implement the support editing
+void SLASupportTree::mouse_event(const MouseEvent &)
+{
+
+}
+
 SLASupportTree::SLASupportTree(const Model& model,
                                const SupportConfig& cfg,
                                const Controller& ctl): m_impl(new Impl())
diff --git a/src/libslic3r/SLA/SLASupportTree.hpp b/src/libslic3r/SLA/SLASupportTree.hpp
index 1658eb6b38..0ebbacdadb 100644
--- a/src/libslic3r/SLA/SLASupportTree.hpp
+++ b/src/libslic3r/SLA/SLASupportTree.hpp
@@ -106,10 +106,25 @@ public:
     SLASupportsStoppedException(): std::runtime_error("") {}
 };
 
+/// A simple type carrying mouse event info. For support editing purposes
+struct MouseEvent {
+    enum Buttons {
+        M_RIGHT, M_LEFT, M_MIDDLE
+    } button;
+
+    enum Type {
+        ENGAGE, RELEASE, MOVE
+    } type;
+
+    Vec3d coords;
+};
+
 /// The class containing mesh data for the generated supports.
 class SLASupportTree {
     class Impl;
     std::unique_ptr<Impl> m_impl;
+    std::function<void()> m_vcallback;
+
     Impl& get() { return *m_impl; }
     const Impl& get() const { return *m_impl; }
 
@@ -144,6 +159,16 @@ public:
 
     /// Get the sliced 2d layers of the support geometry.
     SlicedSupports slice(float layerh, float init_layerh = -1.0) const;
+
+    /// The function to call when mouse events should be propagated to the
+    /// supports for editing
+    void mouse_event(const MouseEvent&);
+
+    /// The provided callback will be called if the supports change their shape
+    /// or need to be repainted
+    inline void on_supports_changed(std::function<void()> callback) {
+        m_vcallback = callback;
+    }
 };
 
 }