Add support for parameterNames in Signals

There were many uses cases when a proper interaction
between Python and Qml was needed, one of them was
the case to emit signals from Python an get those values
via an argument name in QML.

A simple example describing this situation can be found
in PYSIDE-634:

Python:
    sumResult = Signal(int, arguments=["sum"])
    sumResult.emit(42)
Qml:
    onSumResult: console.log(sum) // will print 42

A test case based on the same example was added.

Change-Id: I0908f97d88eaadc0c02d81bc4daca936f72f6c6a
Fixes: PYSIDE-634
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/sources/pyside2/libpyside/pysidesignal_p.h b/sources/pyside2/libpyside/pysidesignal_p.h
index a5cd67f66..8027f4459 100644
--- a/sources/pyside2/libpyside/pysidesignal_p.h
+++ b/sources/pyside2/libpyside/pysidesignal_p.h
@@ -55,6 +55,7 @@ struct PySideSignalData
 
     QByteArray signalName;
     QVector<Signature> signatures;
+    QByteArrayList *signalArguments;
 };
 
 extern "C"
@@ -64,7 +65,7 @@ extern "C"
     struct PySideSignal {
         PyObject_HEAD
         PySideSignalData *data;
-        PyObject* homonymousMethod;
+        PyObject *homonymousMethod;
     };
 
     struct PySideSignalInstance;