From 74e0fc2c123f18f282e35d147b737d0b774d926e Mon Sep 17 00:00:00 2001
From: asl <asl@opencascade.com>
Date: Tue, 1 Sep 2015 09:37:00 +0300
Subject: [PATCH] Add virtual function to allow the module to abort active
 operations on document loading/saving

---
 src/CAM/CAM_Application.cxx | 17 +++++++++++++++++
 src/CAM/CAM_Application.h   |  2 ++
 src/CAM/CAM_Module.cxx      |  6 ++++++
 src/CAM/CAM_Module.h        |  2 ++
 src/STD/STD_Application.cxx | 17 +++++++++++++++++
 src/STD/STD_Application.h   |  2 ++
 6 files changed, 46 insertions(+)

diff --git a/src/CAM/CAM_Application.cxx b/src/CAM/CAM_Application.cxx
index e45d4a8cd..ed7260417 100755
--- a/src/CAM/CAM_Application.cxx
+++ b/src/CAM/CAM_Application.cxx
@@ -863,3 +863,20 @@ CAM_Application::ModuleShortInfoList CAM_Application::getVersionInfo()
   }  
   return info;
 }
+
+/*!
+  \brief Abort active operations if there are any
+ 
+  Iterates through all modules and asks each of them if there are pending operations that cannot be aborted.
+ 
+  \return \c false if some operation cannot be aborted
+*/
+bool CAM_Application::abortAllOperations()
+{
+  bool aborted = true;
+  for ( QList<CAM_Module*>::const_iterator it = myModules.begin(); it != myModules.end() && aborted; ++it )
+  {
+    aborted = (*it)->abortAllOperations();
+  }
+  return aborted;
+}
diff --git a/src/CAM/CAM_Application.h b/src/CAM/CAM_Application.h
index d25f4d4c2..5944e55d3 100755
--- a/src/CAM/CAM_Application.h
+++ b/src/CAM/CAM_Application.h
@@ -93,6 +93,8 @@ protected:
 
   static QString      moduleLibrary( const QString&, const bool = true );
 
+  virtual bool        abortAllOperations();
+
 private:
   void                readModuleList();
 
diff --git a/src/CAM/CAM_Module.cxx b/src/CAM/CAM_Module.cxx
index 5d7d569de..d3a0ddaf1 100755
--- a/src/CAM/CAM_Module.cxx
+++ b/src/CAM/CAM_Module.cxx
@@ -1134,3 +1134,9 @@ void CAM_Module::connectToStudy( CAM_Study* camStudy )
   \fn void CAM_Module::updateCommandsStatus();
   \brief Update menu/toolbar actions.
 */
+
+
+bool CAM_Module::abortAllOperations()
+{
+  return true;
+}
diff --git a/src/CAM/CAM_Module.h b/src/CAM/CAM_Module.h
index 74a2b6e75..952f18571 100755
--- a/src/CAM/CAM_Module.h
+++ b/src/CAM/CAM_Module.h
@@ -145,6 +145,8 @@ protected:
   // after activate/deactivate modules
   QMap<QPair<int, QAction*>, QKeySequence> myActionShortcutMap; //!< copy actions shortcut map
 
+  virtual bool           abortAllOperations();
+
 private:
   CAM_Application*       myApp;             //!< parent application object
   QString                myName;            //!< module title (user name)
diff --git a/src/STD/STD_Application.cxx b/src/STD/STD_Application.cxx
index dee6fd199..2f0c957fe 100755
--- a/src/STD/STD_Application.cxx
+++ b/src/STD/STD_Application.cxx
@@ -324,6 +324,9 @@ void STD_Application::onOpenDoc()
 /*! \retval true, if document was opened successful, else false.*/
 bool STD_Application::onOpenDoc( const QString& aName )
 {
+  if ( !abortAllOperations() )
+    return false;
+
   QApplication::setOverrideCursor( Qt::WaitCursor );
 
   bool res = openAction( openChoice( aName ), aName );
@@ -558,6 +561,9 @@ void STD_Application::onSaveDoc()
   if ( !activeStudy() )
     return;
 
+  if ( !abortAllOperations() )
+    return;
+
   bool isOk = false;
   if ( activeStudy()->isSaved() )
   {
@@ -593,6 +599,9 @@ bool STD_Application::onSaveAsDoc()
   if ( !study )
     return false;
 
+  if ( !abortAllOperations() )
+    return false;
+
   bool isOk = false;
   while ( !isOk )
   {
@@ -1007,3 +1016,11 @@ int STD_Application::viewManagerId( const SUIT_ViewManager* theManager) const
   return myViewMgrs.indexOf(const_cast<SUIT_ViewManager*>(theManager));
 }
 
+/*!
+  \brief Abort active operations if there are any
+  \return \c false if some operation cannot be aborted
+*/
+bool STD_Application::abortAllOperations()
+{
+  return true;
+}
diff --git a/src/STD/STD_Application.h b/src/STD/STD_Application.h
index ed3f6fed5..2b1f4653c 100755
--- a/src/STD/STD_Application.h
+++ b/src/STD/STD_Application.h
@@ -170,6 +170,8 @@ protected:
   virtual bool          closeDoc( bool ask = true );
   virtual bool          closeActiveDoc( bool permanently = true );
 
+  virtual bool          abortAllOperations();
+
 private:
   ViewManagerList       myViewMgrs;
   SUIT_ViewManager*     myActiveViewMgr;
-- 
2.39.2