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Bug 87460 - "IAE: can't find specified class: org.openide.windows.TopComponent" trying to drag editor tab
Summary: "IAE: can't find specified class: org.openide.windows.TopComponent" trying to...
Status: RESOLVED FIXED
Alias: None
Product: platform
Classification: Unclassified
Component: Window System (show other bugs)
Version: 6.x
Hardware: All All
: P3 blocker (vote)
Assignee: David Simonek
URL:
Keywords: RANDOM
Depends on:
Blocks:
 
Reported: 2006-10-18 20:54 UTC by Jesse Glick
Modified: 2008-12-22 19:00 UTC (History)
1 user (show)

See Also:
Issue Type: DEFECT
Exception Reporter:

Attachments
Stack trace (3.20 KB, text/plain)
2006-10-18 20:55 UTC, Jesse Glick 		Details
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Description Jesse Glick 2006-10-18 20:54:41 UTC 
Tried to drag a (form) editor tab to a new position in the editor area. Got an
exception instead. Dev 061014.
Comment 1 Jesse Glick 2006-10-18 20:55:08 UTC 
Created attachment 35348 [details]
Stack trace
Comment 2 Marian Mirilovic 2006-10-19 09:48:13 UTC 
Jesse, 
it works for me in NB Dev(200610181800) & JDK 6.0(b101)
Comment 3 Jesse Glick 2006-10-19 18:05:26 UTC 
I cannot reproduce it either.
Comment 4 David Simonek 2006-10-23 14:53:04 UTC 
I studied the code around the exception but I can't find anything bad. Mime type
for TopComponent transferable is defined as a constant and used
everywhere...there must be smt strange elsewhere, but I can't find out what.
Closing, please reopen if problem reappers, thanks.
Comment 5 Jesse Glick 2006-10-23 16:44:08 UTC 
Looks like you are relying on the thread context class loader being able to find
TopComponent.Cloneable. While this should be true of course, it is not very
robust. Please never use the DataFlavor(String,String) constructor in NB code.
Always pass a ClassLoader parameter, thus:

new DataFlavor(MIME_TOP_COMPONENT_CLONEABLE, null,
TopComponent.Cloneable.class.getClassLoader())
Comment 6 David Simonek 2006-10-25 16:37:29 UTC 
thanks Jesse, done:

Checking in TopComponentDragSupport.java;
/cvs/core/windows/src/org/netbeans/core/windows/view/dnd/TopComponentDragSupport.java,v
 <--  TopComponentDragSupport.java
new revision: 1.24; previous revision: 1.23