#include <cpBaseQtApplication/Blocker.h>
#include <QApplication>

// -------------------------------------------------------------------------
cpBaseQtApplication::Blocker::
Blocker( )
  : QObject( )
{
}

// -------------------------------------------------------------------------
cpBaseQtApplication::Blocker::
~Blocker( )
{
}

// -------------------------------------------------------------------------
void cpBaseQtApplication::Blocker::
block( )
{
  QApplication* app =
    dynamic_cast< QApplication* >( QApplication::instance( ) );
  if( app != NULL )
  {
    app->setOverrideCursor( Qt::WaitCursor );
    app->installEventFilter( this );

  } // fi
}

// -------------------------------------------------------------------------
void cpBaseQtApplication::Blocker::
unblock( )
{
  QApplication* app =
    dynamic_cast< QApplication* >( QApplication::instance( ) );
  if( app != NULL )
  {
    while( app->overrideCursor( ) )
      app->restoreOverrideCursor( );
    app->removeEventFilter( this );

  } // fi
}

// -------------------------------------------------------------------------
bool cpBaseQtApplication::Blocker::
eventFilter( QObject* obj, QEvent* event )
{
  return( true ); // -> Block all events
  /* NOTE: this should be the correct implementation:
     switch( event->type( ) )
     {
     //list event you want to prevent here ...
     case QEvent::KeyPress:
     case QEvent::KeyRelease:
     case QEvent::MouseButtonRelease:
     case QEvent::MouseButtonPress:
     case QEvent::MouseButtonDblClick:
     //...
     return( true );
     } // hctiws
     return( this->QObject::eventFilter( obj, event ) );
  */
}

// eof - $RCSfile$