Use ProgressiveDisplay component? http://tapestry.apache.org/tapestry5.1/tapestry-core/ref/org/apache/tapestry5/corelib/components/ProgressiveDisplay.html
see example http://lombok.demon.co.uk/tapestry5Demo/test/core/progressivedisplaydemosource or from tapestry test case http://tapestry-test.appspot.com/progressivedemo with the related src at http://svn.apache.org/viewvc/tapestry/tapestry5/trunk/tapestry-core/src/test/java/org/apache/tapestry5/integration/app1/pages/ProgressiveDemo.java?view=markup François 2011/4/15 David Woods <dwood...@gmail.com>: > Hi, I'm just getting started with Tapestry5, and very impressed so far. > > I have a zone on my page containing a grid component that takes about 20 > seconds to calculate the contents of. I don't want the loading of the page > to hang while this occurs, so I initially have the contents of the zone > hidden by an "if" component associated with a boolean property for the > visibility, and have the "get" method for the grid contents conditionally > returning null when the property is set to false. To calculate the contents > and display the zone I have an actionlink that changes the boolean property > and returns the zone body. > > The toggling works fine, but what I would like to do is display a message on > the page as soon as the actionlink is clicked saying that the load is in > progress (at the moment there is no visible change for 20s), and then this > message should go away when the zone appears. Is there a way to do this? > Also, I would appreciate any insights into whether there is a better way to > do this... > > From the tml: > > <t:actionlink t:id="toggleDomains" > zone="domainsZone">Domains</t:actionlink> > > <t:zone t:id="domainsZone"> > > <t:if test="domainsVisible"> > > <t:grid source="domains" rowsPerPage="15"/> > > </t:if> > > </t:zone> > > > From the page class: > > > @Persist > > @Property > > private boolean domainsVisible; > > > > @InjectComponent > > private Zone domainsZone; > > > > Zone onActionFromToggleDomains() { > > domainsVisible = domainsVisible ? false : true; > > return domainsZone; > > } > > > > public List<Domain> getDomains() { > > if(domainsVisible) { > > return retrieveDomainList(); > > } > > else { > > return null; > > } > > } > > > Thanks for all the interesting discussion and tips. > > > David > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
