from nufox.defer import defgen, waitfrom nufox.functional import partialfrom nufox.widget.window import Windowfrom nufox.widget import signal, stdfrom nufox import xulclass Example(xul.XULPage): """nufox.widget: Basic usage""" def setup(self): # Keep track of how many times pushed. self.counter = 0 # Create the window. window = self.window = Window(title=u'Press this button!') # Create a box to layout our widgets. vbox = std.VBox(flex=1) window.append(vbox) # Create a button to push. button = std.Button(label=u'A Button') # Respond to its ``clicked`` signal. button.connect(signal.clicked, self.on_button_clicked) # Create a label to update upon clicking. label = self.label = std.Label(value=u'Hello there') label2 = std.Label(value=u'(the above line will be repeated below)') label3 = self.label3 = std.Label() vbox.append(button, label, label2, label3) # Connect the ``changed`` signal from ``label`` directly to # the setting of the ``value`` attribute on ``label3``. label.connect(signal.changed, partial(label3.set, 'value')) def on_button_clicked(self): self.counter += 1 # Set the label's value. Don't bother returning it, because # it doesn't need to be linked back into any sequential chain # of events. self.label.set('value', u'You have clicked %s times' % self.counter)