The on process event handler. Each control will be processed when the Page is requested.
ClickServlet will process all Page controls in the order they were added to the Page.
{@link org.apache.click.control.Container} implementations should recursivelyinvoke the onProcess method on each of their child controls ensuring that all controls receive this event. However when a control onProcess method return false, no other controls onProcess method should be invoked.
When a control is processed it should return true if the Page should continue event processing, or false if no other controls should be processed and the {@link Page#onGet()} or {@link Page#onPost()} methodsshould not be invoked.
Please note: a common problem when overriding onProcess in subclasses is forgetting to call
super.onProcess(). Consider carefully whether you should call
super.onProcess() or not, especially for {@link org.apache.click.control.Container}s which by default call
onProcess on all their child controls as well.
@return true to continue Page event processing or false otherwise