Window.

def view_input(window):
    """Window.

    """
    store = window.store

    def change_label(sender):
        """event func"""
        store.label.value = sender.value

    window += Input(
        label='Introducir: ',
        cursor=red('_'),
        left_l='< ',
        right_l=' >',
        on_enter=change_label,
        ref='input'
    )
    window += Label(
        cordx=28,
        ref='label'
    )