From d0445c11df5bce33d464c9c0ef97186519cc069d Mon Sep 17 00:00:00 2001
From: nds <nds@opencascade.com>
Date: Wed, 11 Nov 2015 10:53:22 +0300
Subject: [PATCH] Method to check whether the object is a sub object of a
 composite. Should be called to correct enable state of the Delete aciton.

---
 src/XGUI/XGUI_Tools.cpp | 16 ++++++++++++++++
 src/XGUI/XGUI_Tools.h   |  7 +++++++
 2 files changed, 23 insertions(+)

diff --git a/src/XGUI/XGUI_Tools.cpp b/src/XGUI/XGUI_Tools.cpp
index b0bc95106..cd7248f45 100644
--- a/src/XGUI/XGUI_Tools.cpp
+++ b/src/XGUI/XGUI_Tools.cpp
@@ -155,6 +155,20 @@ void refsToFeatureInFeatureDocument(const ObjectPtr& theObject, std::set<Feature
   }
 }
 
+//**************************************************************
+bool XGUI_Tools::isSubOfComposite(const ObjectPtr& theObject)
+{
+  bool isSub = false;
+  std::set<FeaturePtr> aRefFeatures;
+  refsToFeatureInFeatureDocument(theObject, aRefFeatures);
+  std::set<FeaturePtr>::const_iterator anIt = aRefFeatures.begin(),
+                                       aLast = aRefFeatures.end();
+  for (; anIt != aLast && !isSub; anIt++) {
+    isSub = isSubOfComposite(theObject, *anIt);
+  }
+  return isSub;
+}
+
 //**************************************************************
 bool isSubOfComposite(const ObjectPtr& theObject, const FeaturePtr& theFeature)
 {
@@ -188,11 +202,13 @@ void refsToFeatureInAllDocuments(const ObjectPtr& theSourceObject, const ObjectP
   theAlreadyProcessed.insert(aFeature);
 
   // 1. find references in the current document
+
   std::set<FeaturePtr> aRefFeatures;
   refsToFeatureInFeatureDocument(theObject, aRefFeatures);
   std::set<FeaturePtr>::const_iterator anIt = aRefFeatures.begin(),
                                        aLast = aRefFeatures.end();
   for (; anIt != aLast; anIt++) {
+    // composite feature should not be deleted when the sub feature is to be deleted
     if (!isSubOfComposite(theSourceObject, *anIt))
       theDirectRefFeatures.insert(*anIt);
   }
diff --git a/src/XGUI/XGUI_Tools.h b/src/XGUI/XGUI_Tools.h
index 21ca7356d..48ab0d57b 100644
--- a/src/XGUI/XGUI_Tools.h
+++ b/src/XGUI/XGUI_Tools.h
@@ -128,6 +128,13 @@ void XGUI_EXPORT refsToFeatureInAllDocuments(const ObjectPtr& theSourceObject,
                                              std::set<FeaturePtr>& theDirectRefFeatures,
                                              std::set<FeaturePtr>& theIndirectRefFeatures,
                                              std::set<FeaturePtr>& theAlreadyProcessed);
+
+/*!
+* Returns true if the result is a sub object of some composite object
+* \param theObject a result object
+* \returns boolean value
+*/
+bool XGUI_EXPORT isSubOfComposite(const ObjectPtr& theObject);
 };
 
 #endif
-- 
2.39.2