A callback fired when the button is clicked. The callback is passed the button widget.
disabled
Boolean, optional
Whether the button is disabled. Defaults to false.
style
Object, optional
An object of allowed CSS styles with their values to be set for this widget. Defaults to an empty object.
imageUrl
String, optional
Optional image url. If provided, the button will be rendered as an image and the value text will be shown on mouse hover. Only data: urls and icons loaded from gstatic.com are allowed.