fixed a missign QMetaObject::disconnect which leads to connection leaking

added removeSignalHandlers()

git-svn-id: http://svn.code.sf.net/p/pythonqt/code/trunk@398 ea8d5007-eb21-0410-b261-ccb3ea6e24a9

Author: florianlink

src/PythonQt.cpp

@@ -1389,6 +1389,18 @@ void PythonQtPrivate::removeSignalEmitter(QObject* obj)
   _signalReceivers.remove(obj);
 }
 
+void PythonQt::removeSignalHandlers()
+{
+  QList<PythonQtSignalReceiver*> signalReceivers = _p->_signalReceivers.values();
+
+  // just delete all signal receivers, they will remove themselves via removeSignalEmitter()
+  foreach(PythonQtSignalReceiver* receiver, signalReceivers) {
+    delete receiver;
+  }
+  // just to be sure, clear the receiver map as well
+  _p->_signalReceivers.clear();
+}
+
 namespace
 {
 //! adapted from python source file "pythonrun.c", function "handle_system_exit"

src/PythonQt.h

@@ -365,6 +365,9 @@ class PYTHONQT_EXPORT PythonQt : public QObject {
   //! remove a signal handler from the given \c signal of \c obj
   bool removeSignalHandler(QObject* obj, const char* signal, PyObject* receiver);
 
+  //! globally removes all signal handlers (connections between QObjects and Python).
+  void removeSignalHandlers();
+
   //@}
 
   //---------------------------------------------------------------------------

src/PythonQtSignalReceiver.cpp

@@ -213,6 +213,7 @@ bool PythonQtSignalReceiver::removeSignalHandler(const char* signal, PyObject* c
     if (callable) {
       while (i.hasNext()) {
         if (i.next().isSame(sigId, callable)) {
+          QMetaObject::disconnect(_obj, sigId, this, i.value().slotId());
           i.remove();
           foundCount++;
           break;
@@ -221,6 +222,7 @@ bool PythonQtSignalReceiver::removeSignalHandler(const char* signal, PyObject* c
     } else {
       while (i.hasNext()) {
         if (i.next().signalId() == sigId) {
+          QMetaObject::disconnect(_obj, sigId, this, i.value().slotId());
           i.remove();
           foundCount++;
         }