Programmatic updating and scrolling with RequestContext
RequestContext is an easy-to-use utility class that provides useful goodies. RequestContext is available for AJAX as well as non-AJAX calls. The most important goodies will be revealed in this book.
In this recipe, we will see how to specify components to be updated at runtime rather than specifying update targets at compile time declaratively. We will also see how to scroll to any component after the current AJAX request completes. Scrolling to the given component with AJAX updates is very handy in long pages and can increase the website's usability.
How to do it...
In the first
example, we will develop a counter that will be incremented in an action listener. The current counter value will be displayed in two output components h:outputText. A decision what h:outputText is responsible for the output is provided by a checkbox p:selectBooleanCheckbox. The user can decide at runtime if he/she would like to update the first or the...
