From e9ee9a2bdb4fe45183e82cc71763a33341840aaa Mon Sep 17 00:00:00 2001
From: mpv <mikhail.ponikarov@opencascade.com>
Date: Fri, 4 Apr 2014 11:31:43 +0400
Subject: [PATCH] Access to feature by index in group

---
 src/Model/Model_Document.cxx     | 8 ++++++++
 src/Model/Model_Document.h       | 4 ++++
 src/ModelAPI/ModelAPI_Document.h | 5 +++++
 3 files changed, 17 insertions(+)

diff --git a/src/Model/Model_Document.cxx b/src/Model/Model_Document.cxx
index 8a3f0bf45..3aea0ff6e 100644
--- a/src/Model/Model_Document.cxx
+++ b/src/Model/Model_Document.cxx
@@ -191,6 +191,14 @@ shared_ptr<ModelAPI_Iterator> Model_Document::featuresIterator(const string theG
   return shared_ptr<ModelAPI_Iterator>(new Model_Iterator(aThis, groupLabel(theGroup)));
 }
 
+shared_ptr<ModelAPI_Feature> Model_Document::feature(const string& theGroupID, const int theIndex)
+{
+  // TODO: optimize this method
+  shared_ptr<ModelAPI_Iterator>  anIter = featuresIterator(theGroupID);
+  for(int a = 0; a != theIndex; anIter->next()) a++;
+  return anIter->current();
+}
+
 Model_Document::Model_Document(const std::string theID)
     : myID(theID), myDoc(new TDocStd_Document("BinOcaf")) // binary OCAF format
 {
diff --git a/src/Model/Model_Document.h b/src/Model/Model_Document.h
index bc7d6db74..d96aa15dd 100644
--- a/src/Model/Model_Document.h
+++ b/src/Model/Model_Document.h
@@ -78,6 +78,10 @@ public:
 
   MODEL_EXPORT virtual const std::string& id() const {return myID;}
 
+  //! Returns the feature in the group by the index (started from zero)
+  MODEL_EXPORT virtual std::shared_ptr<ModelAPI_Feature> 
+    feature(const std::string& theGroupID, const int theIndex);
+
 protected:
 
   //! Returns (creates if needed) the group label
diff --git a/src/ModelAPI/ModelAPI_Document.h b/src/ModelAPI/ModelAPI_Document.h
index 90a6a9184..e40e9f5b5 100644
--- a/src/ModelAPI/ModelAPI_Document.h
+++ b/src/ModelAPI/ModelAPI_Document.h
@@ -78,8 +78,13 @@ public:
   MODELAPI_EXPORT virtual std::shared_ptr<ModelAPI_Iterator> featuresIterator(
     const std::string theGroup) = 0;
 
+  ///! Returns the id of hte document
   MODELAPI_EXPORT virtual const std::string& id() const = 0;
 
+  //! Returns the feature in the group by the index (started from zero)
+  MODELAPI_EXPORT virtual std::shared_ptr<ModelAPI_Feature> 
+    feature(const std::string& theGroupID, const int theIndex) = 0;
+
 protected:
   /// Only for SWIG wrapping it is here
   MODELAPI_EXPORT ModelAPI_Document()
-- 
2.39.2