Release 4.0.0-preview1-00183

[platform/core/csapi/tizenfx.git] / src / Tizen.NUI / src / public / BaseComponents / Scrollable.cs

diff --git a/src/Tizen.NUI/src/public/BaseComponents/Scrollable.cs b/src/Tizen.NUI/src/public/BaseComponents/Scrollable.cs
index 37b8cfd..3803986 100755 (executable)
--- a/src/Tizen.NUI/src/public/BaseComponents/Scrollable.cs
+++ b/src/Tizen.NUI/src/public/BaseComponents/Scrollable.cs
@@ -53,6 +53,8 @@ namespace Tizen.NUI.BaseComponents
             //You should not access any managed member here except static instance.
             //because the execution order of Finalizes is non-deterministic.
 
+            DisConnectFromSignals();
+
             if (swigCPtr.Handle != global::System.IntPtr.Zero)
             {
                 if (swigCMemOwn)
@@ -66,6 +68,34 @@ namespace Tizen.NUI.BaseComponents
             base.Dispose(type);
         }
 
+        private void DisConnectFromSignals()
+        {
+            // Save current CPtr.
+            global::System.Runtime.InteropServices.HandleRef currentCPtr = swigCPtr;
+
+            // Use BaseHandle CPtr as current might have been deleted already in derived classes.
+            swigCPtr = GetBaseHandleCPtrHandleRef;
+
+            if (_scrollableCompletedCallbackDelegate != null)
+            {
+                this.ScrollCompletedSignal().Disconnect(_scrollableCompletedCallbackDelegate);
+            }
+
+            if (_scrollableUpdatedCallbackDelegate != null)
+            {
+                this.ScrollUpdatedSignal().Disconnect(_scrollableUpdatedCallbackDelegate);
+            }
+
+            if (_scrollableStartedCallbackDelegate != null)
+            {
+                this.ScrollStartedSignal().Disconnect(_scrollableStartedCallbackDelegate);
+            }
+
+            // BaseHandle CPtr is used in Registry and there is danger of deletion if we keep using it here.
+            // Restore current CPtr.
+            swigCPtr = currentCPtr;
+        }
+
         public class StartedEventArgs : EventArgs
         {
             private Vector2 _vector2;