class ImageButton(DOMWidget):
disabled = Bool(False, help="Enable or disable user changes.", sync=True)
_view_name = Unicode('ImageButtonView', sync=True)
format = Unicode('png', sync=True)
width = CUnicode(sync=True)
height = CUnicode(sync=True)
_b64value = Unicode(sync=True)
value = Bytes()
def _value_changed(self, name, old, new):
self._b64value = base64.b64encode(new)
def __init__(self, **kwargs):
super(ImageButton, self).__init__(**kwargs)
self._click_handlers = CallbackDispatcher()
self.on_msg(self._handle_button_msg)
def on_click(self, callback, remove=False):
self._click_handlers.register_callback(callback, remove=remove)
def _handle_button_msg(self, _, content):
if content.get('event', '') == 'click':
self._click_handlers(self, content)
def __init__(self, **kwargs):
super(ImageButton, self).__init__(**kwargs)
self._click_handlers = CallbackDispatcher()
self.on_msg(self._handle_button_msg)
