class ComboBoxNewItemsExample(VerticalLayout, IValueChangeListener,
abstract_select.INewItemHandler):
_cities = ['Berlin', 'Brussels', 'Helsinki', 'Madrid', 'Oslo',
'Paris', 'Stockholm']
def __init__(self):
super(ComboBoxNewItemsExample, self).__init__()
self._lastAdded = False
self.setSpacing(True)
self._l = ComboBox('Please select a city')
for c in self._cities:
self._l.addItem(c)
self._l.setNewItemsAllowed(True)
self._l.setNewItemHandler(self)
self._l.setImmediate(True)
self._l.addListener(self, IValueChangeListener)
self.addComponent(self._l)
# Shows a notification when a selection is made.
def valueChange(self, event):
if not self._lastAdded:
self.getWindow().showNotification('Selected city: '
+ str(event.getProperty()))
self._lastAdded = False
def addNewItem(self, newItemCaption):
if not self._l.containsId(newItemCaption):
self.getWindow().showNotification('Added city: '
+ newItemCaption)
self._lastAdded = True
self._l.addItem(newItemCaption)
self._l.setValue(newItemCaption)
