Using Progress Observers
introduction to HTML_Progress observer mechanism
Table of Contents
Introduction
The HTML_Progress_Observer class provides an implementation of the observer pattern.
In the content of the HTML_Progress package, they provide a mechanism which you can
examine each important event as it is happened. This allows the implementation of
special behavior based on the value of the progress element.
Learning part
If you want to know more and learn how to use the observer mechanism
of HTML_Progress 1.x, read article
HTML_Progress_Observer.