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
