From 773cdd179a0bf7b59fe1e79496b498e51fb2922e Mon Sep 17 00:00:00 2001
From: asl <asl@opencascade.com>
Date: Thu, 18 Mar 2010 10:26:35 +0000
Subject: [PATCH] implementation of copy/paste mechanism allowing the active
 module to use own copy/paste implementation

---
 src/LightApp/LightApp_Application.cxx | 33 ++++++++++++++++++++++++--
 src/LightApp/LightApp_Application.h   |  4 +++-
 src/LightApp/LightApp_Module.cxx      | 34 +++++++++++++++++++++++++++
 src/LightApp/LightApp_Module.h        |  5 ++++
 4 files changed, 73 insertions(+), 3 deletions(-)

diff --git a/src/LightApp/LightApp_Application.cxx b/src/LightApp/LightApp_Application.cxx
index 13075b408..e66cf34c3 100644
--- a/src/LightApp/LightApp_Application.cxx
+++ b/src/LightApp/LightApp_Application.cxx
@@ -27,11 +27,14 @@
 // E.A. : On windows with python 2.6, there is a conflict
 // E.A. : between pymath.h and Standard_math.h which define
 // E.A. : some same symbols : acosh, asinh, ...
-#include <Standard_math.hxx>
-#include <pymath.h>
+  #include <Standard_math.hxx>
+  #ifndef DISABLE_PYCONSOLE
+    #include <pymath.h>
+  #endif
 #endif
 
 #ifndef DISABLE_PYCONSOLE
+  
   #include "LightApp_PyInterp.h" // WARNING! This include must be the first!
   #include <PyConsole_Console.h>
 #endif
@@ -1015,6 +1018,12 @@ void LightApp_Application::onHelpContextModule( const QString& theComponentName,
 */
 void LightApp_Application::onSelectionChanged()
 {
+  LightApp_Module* m = dynamic_cast<LightApp_Module*>( activeModule() );
+  bool canCopy  = m ? m->canCopy() : false;
+  bool canPaste = m ? m->canPaste() : false;
+
+  action( EditCopyId )->setEnabled(canCopy);
+  action( EditPasteId )->setEnabled(canPaste);
 }
 
 /*!
@@ -3250,3 +3259,23 @@ void LightApp_Application::clearKnownViewManagers()
       removeViewManager(aMgr);
   }
 }
+
+/*!
+  Copy of current selection 
+ */
+void LightApp_Application::onCopy()
+{
+  LightApp_Module* m = dynamic_cast<LightApp_Module*>( activeModule() );
+  if( m )
+    m->copy();
+}
+
+/*!
+  Paste of current data in clipboard
+ */
+void LightApp_Application::onPaste()
+{
+  LightApp_Module* m = dynamic_cast<LightApp_Module*>( activeModule() );
+  if( m )
+    m->paste();
+}
diff --git a/src/LightApp/LightApp_Application.h b/src/LightApp/LightApp_Application.h
index 27d0852af..8a6911a2d 100644
--- a/src/LightApp/LightApp_Application.h
+++ b/src/LightApp/LightApp_Application.h
@@ -167,6 +167,9 @@ public slots:
   virtual void                        onOpenDoc();
   virtual void                        onHelpAbout();
   virtual bool                        onOpenDoc( const QString& );
+  virtual void                        onCopy();
+  virtual void                        onPaste();
+  virtual void                        onSelectionChanged();
 
 protected:
   virtual void                        createActions();
@@ -181,7 +184,6 @@ protected:
 
   virtual void                        setActiveStudy( SUIT_Study* );
   virtual void                        updateCommandsStatus();
-  virtual void                        onSelectionChanged();
 
   virtual void                        beforeCloseDoc( SUIT_Study* );
   virtual void                        afterCloseDoc();
diff --git a/src/LightApp/LightApp_Module.cxx b/src/LightApp/LightApp_Module.cxx
index 228234513..46d4b48da 100644
--- a/src/LightApp/LightApp_Module.cxx
+++ b/src/LightApp/LightApp_Module.cxx
@@ -649,3 +649,37 @@ bool LightApp_Module::reusableOperation( const int id )
 {
  return true;
 } 
+
+/*!
+  virtual method
+  \return true if module can copy the current selection
+*/
+bool LightApp_Module::canCopy() const
+{
+  return false;
+}
+
+/*!
+  virtual method
+  \return true if module can paste previously copied data
+*/
+bool LightApp_Module::canPaste() const
+{
+  return false;
+}
+
+/*!
+  virtual method
+  \brief Copies the current selection into clipboard
+*/
+void LightApp_Module::copy()
+{
+}
+
+/*!
+  virtual method
+  \brief Pastes the current data in the clipboard
+*/
+void LightApp_Module::paste()
+{
+}
diff --git a/src/LightApp/LightApp_Module.h b/src/LightApp/LightApp_Module.h
index c608497e5..971586ad2 100644
--- a/src/LightApp/LightApp_Module.h
+++ b/src/LightApp/LightApp_Module.h
@@ -92,6 +92,11 @@ public:
   virtual LightApp_Displayer*         displayer();
   virtual LightApp_Selection*         createSelection() const;
 
+  virtual bool                        canCopy() const;
+  virtual bool                        canPaste() const;
+  virtual void                        copy();
+  virtual void                        paste();
+
 public slots:
   virtual bool                        activateModule( SUIT_Study* );
   virtual bool                        deactivateModule( SUIT_Study* );
-- 
2.39.2