I am running my project as a plugin and I need an Outline view (as tree view) of elements added in my graphiti diagram. I tried to follow the "Common example" to do this, taking care of adding the extension point "org.eclipse.ui.navigator.navigatorContent" with my own GFEmfLabelProvider, RenameActionProvider and ElementNode, but the Outline task in plugin is always not available or it shows some information like in the attached output picture.
So I would kindly ask you for a better solution.
I solved my problem. I forgot to specify my own GFEmfTreeContentProvider in plugin.xml. I'm pretty new in Eclipse plugin generation and I'm sorry also because I had a wrong idea about what my code would have produced.