capture the component that trigger an event in context

[FabienArcellier]

On a click or an event, a developer can consult the identifier at the origin of the event from the context. This allows it to adapt the behavior of its event handler or to retrieve the parent to add interface components.

def increment(state, context):
    print(context['target'])

def increment(state, ui, context):
   container = ui.parent(context['target'])
    with ui.find(container):
      pass

def increment(state, ui, context):
   container = ui.parent(context['target'], level=3) # third parent
    with ui.find(container):
      pass

definition of done

• add a documentation section about Context into EventHandler