Is it possible to show a site dashlet based on a condition, e.g. 'only show when site node has property X with value Y'? Maybe by creating a custom evaluator and adding it to the dashlet component declaration in presets.xml. Is this possible?
One approach to this would be to use a Sub-Component evaluator to decide whether or not to render the dashlet. The problem is that unless you can guarantee the location of the dashlet in the dashboard you will need to override the Sub-Component definition for all 15 slots on the dashboard and run the evaluation on all of them. This is because there is no information on which region the dashlet component will be bound to and the dashlet components are defined by their location rather than any specific identifier. More information on hiding Sub-Components based on evaluations can be found in this blog post: http://blogs.alfresco.com/wp/ddraper/2011/07/29/sub-component-evaluations/
