def __init__(self):
qt.QWidget.__init__(self, parent=None)
layout = qt.QVBoxLayout()
spinbox1 = qt.QSpinBox()
spinbox2 = qt.QSpinBox()
textEdit = qt.QTextEdit()
button = qt.QPushButton()
slider = qt.QSlider(q.Qt.Horizontal)
self.model = Model()
valueObserver = Observer()
self.valueObserver = valueObserver
valueObserver.bindToProperty(spinbox1, "value")
valueObserver.bindToProperty(spinbox2, "value")
valueObserver.bindToProperty(self.model, "value")
valueObserver.bindToProperty(slider, "value")
textObserver = Observer()
self.textObserver = textObserver
textObserver.bindToProperty(self.model, "someText")
textObserver.bind(textEdit,
textEdit.setPlainText,
textEdit.textChanged,
getter=textEdit.toPlainText)
button.clicked.connect(lambda: setattr(self.model, "value", 10))
layout.addWidget(spinbox1)
layout.addWidget(spinbox2)
layout.addWidget(textEdit)
layout.addWidget(button)
layout.addWidget(slider)
self.setLayout(layout)
