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Meta / Notification bar / Closable

Display a notification_bar and detect when it's closed.

from h2o_wave import main, app, Q, ui

@app('/demo')async def serve(q: Q):    if not q.client.initialized:        # Create an empty meta_card to hold the notification bar['meta'] = ui.meta_card(box='')        # Display a button to show the notification bar['form'] = ui.form_card(box='1 1 2 4', items=[            ui.button(name='show_notification_bar', label='Show notification bar'),        ])        q.client.initialized = True
    # Was the show_notification_bar button clicked?        if q.args.show_notification_bar:        # Create a notification bar['meta'].notification_bar=ui.notification_bar(            text='You can close me!',            name="my_bar",            # Get notified when the notification bar is dismissed.            events=['dismissed'],        )
    # Did we get events from the notification bar?    if        # Was the notification bar dismissed?        if            # Delete the notification bar  ['meta'].notification_bar = None        

Tags: โ€‚meta โ€‚notification_bar