This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
There is currently no way through the API, to dynamically add actions globally for specific modes or specific (foreign) TopComponents. The ones already there appears to originate from org.netbeans.core.windows.actions.ActionUtils and cannot be readily supplemented. Currently one has to resort to hacks of this sort: http://wiki.netbeans.org/DevFaqActionAddTabPopup
I'd expect the tabs could read the actions from a well defined location in the SFS using Utilities.actionsForPath(....)