Provide a way to reproduce or a simple sample on GitHub etc, thanks. Gj
On Sunday, December 9, 2018, Marc Streckfuß <marc.streckf...@gmail.com> wrote: > Hey Guys, > > So this issue is on Netbeans 8.2, I cannot test them with NB 9.0 yet as > I have other issues preventing an upgrade. > I am also talking about the Netbeans Platform Facility here, not > Netbeans itself. > > I tried adding Properties Support by adding a Navigator with the Nodes > API, which works so far (I can see the Nodes in the Navigator panel). > The Problem is that selecting a Node in the Navigator leads to a > StackOverflowException because TreeView's Weak PropertyChangeListener > (that's my finding so far, the debugger only shows that it's a > WeakListenerImpl) and EMLookup/ProxyLookup hang at ArrayList#addAll() > because it calls Collection#toArray, which in turn calls addAll at some > point. > > java.lang.StackOverflowError > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > getComputed(ProxyLookup.java:1306) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > computeDelegate(ProxyLookup.java:1116) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1090) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1073) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > size(ProxyLookup.java:1158) > at > org.openide.explorer.DefaultEMLookup$NoNodeLookup$ > ExclusionResult.allItems(DefaultEMLookup.java:254) > at > org.openide.util.lookup.ProxyLookup$LazyCollection.computeSingleResult( > ProxyLookup.java:1296) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > computeDelegate(ProxyLookup.java:1123) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1090) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1073) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > toArray(ProxyLookup.java:1179) > at java.util.ArrayList.addAll(ArrayList.java:581) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > computeDelegate(ProxyLookup.java:1143) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1090) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1073) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > size(ProxyLookup.java:1158) > at > org.openide.explorer.DefaultEMLookup$NoNodeLookup$ > ExclusionResult.allItems(DefaultEMLookup.java:254) > at > org.openide.util.lookup.ProxyLookup$LazyCollection.computeSingleResult( > ProxyLookup.java:1296) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > computeDelegate(ProxyLookup.java:1123) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1090) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > delegate(ProxyLookup.java:1073) > at > org.openide.util.lookup.ProxyLookup$LazyCollection. > toArray(ProxyLookup.java:1179) > at java.util.ArrayList.addAll(ArrayList.java:581) > > With a Breakpoint on addAll I could see that it happens in > PropertyChangeSupport#fire() with a selectedNodes event. > Now since my code is really simple (actually only extending AbstractNode > and using the ChildFactory), I am unsure how to proceed/try to debug. > > Also this kind of error has been seen on the issue tracker: > https://netbeans.org/bugzilla/show_bug.cgi?id=210689 (the exception is > only different since we have enough RAM) > Is there a way to find out what the fuzz is about those Lookups? Could > that be related to my code doing something wrong? or not registering > something to the lookup? > Is there a workaround to use the Properties Panel without Nodes? (as > that's essentially what I need, I already have a graphical > representation of the contents of the Navigator) > > Thanks in Advance, > Marc Streckfuß > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@netbeans.apache.org > For additional commands, e-mail: users-h...@netbeans.apache.org > > For further information about the NetBeans mailing lists, visit: > https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists > >
