Tuesday, November 11th, 2008
The Microsoft AJAX 4.0 preview includes this Sys.Observer class that allows you to be notified of updates to POJO’s, provided you use its APIs to modify them.
Sys.Observer provides a mechanism for registering (and de-registering) listeners to be notified when values change in the object:
- Sys.Observer.addPropertyChanged(objectToObserve, callbackFunction);
However, you must use Sys.Observer to make changes to the objects being observed:
- Sys.Observer.setValue(objectToServe, "property", "newValue");
Alternatively, you can have the framework add a setValue() function directly to the object being observed:
See the full article for more details.
Posted by Ben Galbraith at 7:00 am