Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Workflow.ComponentModel/AuthoringOM/Helpers.cs

@@ -0,0 +1,33 @@
+namespace System.Workflow.ComponentModel
+{
+    using System;
+    using System.Collections;
+    using System.Collections.Specialized;
+    using System.Collections.Generic;
+    using System.CodeDom;
+    using System.Workflow.ComponentModel.Design;
+    using System.Diagnostics;
+    using System.Reflection;
+
+    internal static class InternalHelpers
+    {
+        // Should only be called for BuiltIn activities
+        internal static string GenerateQualifiedNameForLockedActivity(Activity activity, string id)
+        {
+            System.Text.StringBuilder sbQId = new System.Text.StringBuilder();
+
+            // Walk up the parent chain to find the custom activity that contains this built-in activity
+            // and prepend the ID of the custom activity to the front of the qualified ID of this activity.
+            Debug.Assert(activity.Parent != null, "If this is a built-in activity, its parent should never be null.");
+            string newID = (string.IsNullOrEmpty(id)) ? activity.Name : id;
+            CompositeActivity customActivity = Helpers.GetDeclaringActivity(activity);
+            if (customActivity != null)
+                // 
+                sbQId.Append(customActivity.QualifiedName).Append(".").Append(newID);
+            else
+                sbQId.Append(newID);
+
+            return sbQId.ToString();
+        }
+    }
+}