Init checking of the existing sessions

CMakeLists.txt

@@ -82,11 +82,11 @@ ENDIF()
 
 IF( NOT USE_QT4 )
   SET( DEPENDENCIES_STRING "${DEPENDENCIES_STRING}QT5" )
-  FIND_PACKAGE( Qt5 REQUIRED Core Gui Widgets )
-  INCLUDE_DIRECTORIES( ${Qt5Core_INCLUDE_DIRS} ${Qt5Gui_INCLUDE_DIRS} ${Qt5Widgets_INCLUDE_DIRS} )
+  FIND_PACKAGE( Qt5 REQUIRED Core Gui Widgets DBus )
+  INCLUDE_DIRECTORIES( ${Qt5Core_INCLUDE_DIRS} ${Qt5Gui_INCLUDE_DIRS} ${Qt5Widgets_INCLUDE_DIRS} ${Qt5DBus_INCLUDE_DIRS})
   # Add compiler flags for building executables (-fPIE)
   SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt5Core_EXECUTABLE_COMPILE_FLAGS}" )
-  LIST(APPEND QT_LINKER_LIBS Qt5::Core Qt5::Gui Qt5::Widgets )
+  LIST(APPEND QT_LINKER_LIBS Qt5::Core Qt5::Gui Qt5::Widgets Qt5::DBus )
   LIST(APPEND QT_MODULES Core Gui Widgets )
 ENDIF()
 

app/main.cpp

@@ -22,8 +22,9 @@
  * \brief    main file
  */
 
-#include <QApplication>
 #include "config.h"
+#include <QApplication>
+#include <QDBusInterface>
 #include "plaYUVerApp.h"
 #include "SubWindowHandle.h"
 #ifdef USE_FERVOR
@@ -38,15 +39,24 @@ using namespace plaYUVer;
 
 int main( int argc, char *argv[] )
 {
-  QApplication a( argc, argv );
-  QApplication::setApplicationName("PlaYUVer");
-  QApplication::setApplicationVersion(PLAYUVER_VERSION_STRING);
-  QApplication::setOrganizationName("pixlra");
-  QApplication::setOrganizationDomain("playuver.pixlra");
-
   qRegisterMetaType<PlaYUVerStreamInfoVector>("PlaYUVerStreamInfoVector");
   qRegisterMetaTypeStreamOperators<PlaYUVerStreamInfoVector>("PlaYUVerStreamInfoVector");
 
+  QApplication a( argc, argv );
+  QApplication::setApplicationName( "PlaYUVer" );
+  QApplication::setApplicationVersion( PLAYUVER_VERSION_STRING );
+  QApplication::setOrganizationName( "pixlra" );
+  QApplication::setOrganizationDomain( "playuver.pixlra" );
+
+  /**
+   * use dbus, if available
+   * allows for resuse of running Kate instances
+   */
+  if( QDBusConnectionInterface * const sessionBusInterface = QDBusConnection::sessionBus().interface() )
+  {
+
+  }
+
   plaYUVerApp w;
   w.show();
   w.parseArgs( argc, argv );