[PySide] can a QStandardItem emit a signal?

[Frank Rueter | OHUfx]

Hi,

I am writing a custom view for a simple data model and need to have a 
custom widget change it's background colour when it's associated 
QStandardItem has a certain attribute.
I thought I'd simply subclass QStandardItem, give it the custom 
attribute, e.g. isSelected, then a method called setSelected() which 
sets the attribute's value and emits a selectionChanged signal, to which 
I can connect the associated widget's slot that changes the background 
colour.
So this is what I have for the item:

class ElemItem(QtGui.QStandardItem):
     selectionChanged = QtCore.Signal(bool)

     def __init__(self, elementData):
         super(ElemItem, self).__init__(elementData)
         self.isSelected = False
         self.filePath = elementData

     def setSelected(self, selected):
         self.isSelected = selected
         selectionChanged.emit(selected)


However, since QStandardItem doesn't inherit QObject it doesn't seem to 
be able to emit a signal. When I try something like this in the widget:
     self.item.selectionChanged.connect(self.markAsSelected)

I get this error:
AttributeError: 'PySide.QtCore.Signal' object has no attribute 'connect'


Is this the entirely wrong way of achieving what I'm after?
I can achieve what I'm after in other ways but would like to understand 
this hiccup before moving on, so any input would be welcome.

Cheers,
frank



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