tacos also registers a FormComponentEventWorker. It's responsible for adding 2 more parameters to all form components... "eventListener" and "formatter" https://svn.sourceforge.net/svnroot/tacos/tacos-4.0/trunk/tacos-core/src/java/net/sf/tacos/ajax/impl/FormComponentEventWorker.java
Here's their registration https://svn.sourceforge.net/svnroot/tacos/tacos-4.0/trunk/tacos-core/src/descriptor/META-INF/tacos.enhance.xml So, my question is why don't you create your own enhancment worker and contribute it to tapestry.enhance.EnhancementWorkers configuration point? Karthik N wrote: > Hello, > > Tacos 4.0.1 - We are contemplating adding an EnhancementWorker to the > renderComponent method of AbstractComponent. > > The idea is to be able to perform certain "Security" operations in a > (hopefully) elegant fashion. > > For eg. we have cases where a Tab should hide/show itself, a TextField > should hide/show itself. > > Here are the thoughts: > > 1) Introduce a formal parameter for each component something like > renderIfUserInRoles ognl:{'ADMIN', 'SUPERVISOR'} > > 2) A custom EnhancementWorker to change the IWriter accordingly after > calling a SecurityContext.isUserInRoles( {'ADMIN', 'SUPERVISOR'} ) > which will check a ThreadLocal etc. (left out the gory details) > > 3) If the user is not in roles pass on a NullWriter to the component, > so that it will not render its content. > > So here are the questions: > > 1) After some digging we find that InjectAjaxComponentRenderWorker > already enhances AbstractComponent.renderComponent(). Methods of > this Worker are protected, so we plan to further override this > implementation and use the approach described in > http://hivemind.apache.org/override.html to override the service-point > id="ComponentRenderInterceptor" > > 2) Is this a good idea?! We would love to hear some feedback. > > Thanks, Karthik > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > ------------------------------------------------------------------------ > > _______________________________________________ > Tacos-devel mailing list > Tacos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/tacos-devel > -- Andreas Andreou - [EMAIL PROTECTED] - http://andyhot.di.uoa.gr Tapestry / Tacos developer Open Source / J2EE Consulting ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Tacos-devel mailing list Tacos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tacos-devel
