From 6aed1127ddf72d3f450ae2be10b875c503839dcf Mon Sep 17 00:00:00 2001
From: jfa <jfa@opencascade.com>
Date: Fri, 26 Sep 2008 11:23:35 +0000
Subject: [PATCH] Fix regression List.Empty

---
 src/MeasureGUI/MeasureGUI_AngleDlg.cxx    | 14 ++++++++------
 src/MeasureGUI/MeasureGUI_DistanceDlg.cxx | 12 +++++++-----
 src/MeasureGUI/MeasureGUI_PointDlg.cxx    |  5 ++++-
 src/MeasureGUI/MeasureGUI_Skeleton.cxx    | 13 +++++++++----
 4 files changed, 28 insertions(+), 16 deletions(-)

diff --git a/src/MeasureGUI/MeasureGUI_AngleDlg.cxx b/src/MeasureGUI/MeasureGUI_AngleDlg.cxx
index 1ec8fd5c8..31f5a69e6 100644
--- a/src/MeasureGUI/MeasureGUI_AngleDlg.cxx
+++ b/src/MeasureGUI/MeasureGUI_AngleDlg.cxx
@@ -153,14 +153,16 @@ void MeasureGUI_AngleDlg::SelectionIntoArgument()
   SALOME_ListIO aSelList;
   aSelMgr->selectedObjects(aSelList);
 
-  Standard_Boolean testResult = Standard_False;
-  GEOM::GEOM_Object_var aSelectedObject =
-    GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);
+  GEOM::GEOM_Object_var aSelectedObject = GEOM::GEOM_Object::_nil();
 
-  if ( !testResult )
-    aSelectedObject = GEOM::GEOM_Object::_nil();
+  if (aSelList.Extent() > 0) {
+    Standard_Boolean testResult = Standard_False;
+    aSelectedObject = GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);
+    if (!testResult)
+      aSelectedObject = GEOM::GEOM_Object::_nil();
+  }
 
-  if ( myEditCurrentArgument == mySelEdit )
+  if (myEditCurrentArgument == mySelEdit)
     myObj = aSelectedObject;
   else
     myObj2 = aSelectedObject;
diff --git a/src/MeasureGUI/MeasureGUI_DistanceDlg.cxx b/src/MeasureGUI/MeasureGUI_DistanceDlg.cxx
index 075c27596..f5423056d 100644
--- a/src/MeasureGUI/MeasureGUI_DistanceDlg.cxx
+++ b/src/MeasureGUI/MeasureGUI_DistanceDlg.cxx
@@ -140,12 +140,14 @@ void MeasureGUI_DistanceDlg::SelectionIntoArgument()
   SALOME_ListIO aSelList;
   aSelMgr->selectedObjects(aSelList);
 
-  Standard_Boolean testResult = Standard_False;
-  GEOM::GEOM_Object_var aSelectedObject =
-    GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);
+  GEOM::GEOM_Object_var aSelectedObject = GEOM::GEOM_Object::_nil();
 
-  if ( !testResult )
-    aSelectedObject = GEOM::GEOM_Object::_nil();
+  if (aSelList.Extent() > 0) {
+    Standard_Boolean testResult = Standard_False;
+    aSelectedObject = GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);
+    if (!testResult)
+      aSelectedObject = GEOM::GEOM_Object::_nil();
+  }
 
   if ( myEditCurrentArgument == mySelEdit )
     myObj = aSelectedObject;
diff --git a/src/MeasureGUI/MeasureGUI_PointDlg.cxx b/src/MeasureGUI/MeasureGUI_PointDlg.cxx
index 843a9922c..d668675f9 100644
--- a/src/MeasureGUI/MeasureGUI_PointDlg.cxx
+++ b/src/MeasureGUI/MeasureGUI_PointDlg.cxx
@@ -131,11 +131,14 @@ void MeasureGUI_PointDlg::SelectionIntoArgument()
     SALOME_ListIO aSelList;
     aSelMgr->selectedObjects(aSelList);
 
+    if (aSelList.Extent() < 1)
+      return;
+
     Standard_Boolean testResult = Standard_False;
     GEOM::GEOM_Object_var aSelectedObject =
       GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);
 
-    if ( !testResult || aSelectedObject->_is_nil() )
+    if (!testResult || aSelectedObject->_is_nil())
       return;
 
     myObj = aSelectedObject;
diff --git a/src/MeasureGUI/MeasureGUI_Skeleton.cxx b/src/MeasureGUI/MeasureGUI_Skeleton.cxx
index 2dd79a196..fd1c345e5 100644
--- a/src/MeasureGUI/MeasureGUI_Skeleton.cxx
+++ b/src/MeasureGUI/MeasureGUI_Skeleton.cxx
@@ -250,11 +250,16 @@ void MeasureGUI_Skeleton::SelectionIntoArgument()
   SALOME_ListIO aSelList;
   aSelMgr->selectedObjects(aSelList);
 
-  Standard_Boolean testResult = Standard_False;
-  GEOM::GEOM_Object_var aSelectedObject =
-    GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);
+  GEOM::GEOM_Object_var aSelectedObject = GEOM::GEOM_Object::_nil();
 
-  if (!testResult || aSelectedObject->_is_nil()) {
+  if (aSelList.Extent() > 0) {
+    Standard_Boolean testResult = Standard_False;
+    aSelectedObject = GEOMBase::ConvertIOinGEOMObject(aSelList.First(), testResult);
+    if (!testResult)
+      aSelectedObject = GEOM::GEOM_Object::_nil();
+  }
+
+  if (aSelectedObject->_is_nil()) {
     mySelEdit->setText("");
     processObject();
     erasePreview();