The standard KVO events
change are available, as well as one event for each of the observable properties:
change:view. Review the section on KVO in Chapter 2, Key Concepts in OpenLayers if you don't remember how these events work.
In addition to the KVO related events, however, there are quite a few new events that can be triggered from a map object. As with any other event, you can register for these events using the
once() methods discussed earlier. We'll group these events into browser events, map events, and render events.
The Browser events are all events that are provided in response to the user interacting with the map's HTML element. ...