I'm trying to implement custom property tabs to replace the default
ones. I'm basing my work on Anthony Hunter's article as well as a code
snippet from Linda Damus.
I'm able to create new tabs using existing GMF sections and filters.
However, as soon as I provide my own filter instead of
DiagramEditPartPropertySectionFilter for example, the tab doesn't show
anymore. I've put a breakpoint is the select() method: it is never invoked!
I've verified the <propertySection> element which is correctly pointing
to my filter class. It seems that the filter must somehow register
itself into the framework. Could someone explain me how?