From 0ca7e1648d54237e42da4eb61737a5f31ad913cc Mon Sep 17 00:00:00 2001
From: apo <apo@opencascade.com>
Date: Thu, 30 Nov 2006 13:45:27 +0000
Subject: [PATCH] To check ColoredPrs3dHolder on _non_existent before its
 handling

---
 src/VISUGUI/VisuGUI_Slider.cxx | 24 ++++++++++++++++++++----
 src/VISUGUI/VisuGUI_Slider.h   |  1 +
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/VISUGUI/VisuGUI_Slider.cxx b/src/VISUGUI/VisuGUI_Slider.cxx
index 32e1f3e8..068783ea 100644
--- a/src/VISUGUI/VisuGUI_Slider.cxx
+++ b/src/VISUGUI/VisuGUI_Slider.cxx
@@ -229,12 +229,26 @@ VisuGUI_Slider::~VisuGUI_Slider()
 {
 }
 
+bool VisuGUI_Slider::checkHolderList()
+{
+  THolderList aHolderList;
+  THolderList::const_iterator anIter = myHolderList.begin();
+  THolderList::const_iterator anIterEnd = myHolderList.end();
+  for(; anIter != anIterEnd; anIter++){
+    VISU::ColoredPrs3dHolder_var aHolder = *anIter;
+    if(!aHolder->_non_existent())
+      aHolderList.push_back(aHolder);
+  }
+  myHolderList.swap(aHolderList);
+  return myHolderList.empty();
+}
+
 void VisuGUI_Slider::enableControls( bool on )
 {
   widget()->setEnabled( on );
   if( on )
   {
-    if( myHolderList.empty() )
+    if( checkHolderList() )
       return;
 
     myTimeStampStrings->clear();
@@ -288,7 +302,7 @@ void VisuGUI_Slider::enableControls( bool on )
 
 void VisuGUI_Slider::updateMemoryState()
 {
-  if( myHolderList.empty() )
+  if( checkHolderList() )
     return;
 
   VISU::ColoredPrs3dHolder_var aHolder = myHolderList.front();
@@ -337,7 +351,7 @@ void VisuGUI_Slider::onSelectionChanged()
     }
   }
 
-  enableControls( !myHolderList.empty() );
+  enableControls( !checkHolderList() );
   updateMemoryState();
 }
 
@@ -396,8 +410,10 @@ void VisuGUI_Slider::onLast()
 
 void VisuGUI_Slider::onValueChanged( int value )
 {
-  if( myHolderList.empty() )
+  if( checkHolderList() ){
+    enableControls( false );
     return;
+  }
 
   VISU::ColoredPrs3dHolder_var aHolder = myHolderList.front();
 
diff --git a/src/VISUGUI/VisuGUI_Slider.h b/src/VISUGUI/VisuGUI_Slider.h
index a15037c1..652236ea 100644
--- a/src/VISUGUI/VisuGUI_Slider.h
+++ b/src/VISUGUI/VisuGUI_Slider.h
@@ -85,6 +85,7 @@ public slots:
 protected:
   virtual void     enableControls( bool );
   virtual void     updateMemoryState();
+  virtual bool     checkHolderList();
 
 private:
   VisuGUI_Module*  myModule;
-- 
2.39.2