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Bug 167256

Summary:	Keyboard navigation in Projects unusably slow if something in clipboard
Product:	platform	Reporter:	Tomas Pavek <tpavek>
Component:	Explorer	Assignee:	t_h <t_h>
Status:	VERIFIED FIXED
Severity:	blocker	CC:	mkubec, mmirilovic, sustaining
Priority:	P2
Version:	6.x
Hardware:	All
OS:	Windows Vista
Issue Type:	DEFECT	Exception Reporter:
Attachments:	profiling snapshot additional perf. improvements for projectui, milane please review

Description Tomas Pavek 2009-06-17 18:00:21 UTC

200906150201

Even with a simple project, try to Ctrl-C on a file in projects explorer and then move around via keyboard. It's
unusably slow, the IDE totally choked up. I even got the slowness warning reporting AWT blocked for more than 1s.
Attaching the snapshot. It seems like there is no single culprit - perhaps the explorer (or the treeview) should try to
handle consecutive selection changes better.

It's ok with empty clipboard, or if there's e.g. just a text.

Comment 1 Tomas Pavek 2009-06-17 18:01:18 UTC

Created attachment 83717 [details]
profiling snapshot

Comment 2 t_h 2009-06-19 16:40:13 UTC

The reason of slowness was paste action update (especially
org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider.canCopy() is rather slow). I fixed it on explorer's
side where paste action update was invoked when not necessary. 
core-main #428c7d138e45

Comment 3 Quality Engineering 2009-06-20 08:06:05 UTC

Integrated into 'main-golden', will be available in build *200906200201* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Changeset: http://hg.netbeans.org/main-golden/rev/428c7d138e45
User: Tomas Holy <t_h@netbeans.org>
Log: #167256: Keyboard navigation in Projects unusably slow if something in clipboard

Comment 4 t_h 2009-06-24 09:46:48 UTC

Created attachment 83980 [details]
additional perf. improvements for projectui, milane please review

Comment 5 Milan Kubec 2009-06-26 09:27:12 UTC

The patch looks OK. Do projectui tests are pass?

Comment 6 rdelaplante 2009-07-06 19:19:54 UTC

Please have a look at issue #168188 to see if it is caused by this bug.  If yes, please include this fix in NB 6.7 patch 1.

Comment 7 t_h 2009-07-07 07:38:51 UTC

*** Issue 168188 has been marked as a duplicate of this issue. ***

Comment 8 Marian Mirilovic 2009-07-07 09:38:56 UTC

verified

Comment 9 Marian Mirilovic 2009-07-07 09:54:53 UTC

Comment 10 pgebauer 2009-07-07 10:33:49 UTC

The fix has been ported into the release67_fixes repository.
http://hg.netbeans.org/release67_fixes/rev/d0850a22f23f

Comment 11 Quality Engineering 2009-07-07 17:30:43 UTC

Integrated into 'main-golden', will be available in build *200907071400* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Changeset: http://hg.netbeans.org/main-golden/rev/7a94213a56b4
User: Tomas Holy <t_h@netbeans.org>
Log: #167256: additional perf. improvements.

Comment 12 Tomas Pavek 2009-09-10 12:41:41 UTC

*** Issue 159566 has been marked as a duplicate of this issue. ***

Comment 13 dasprid 2015-12-11 14:08:25 UTC

This bug seems to have been appeared again. When I have some larger image in my clipboard, the projects navigation via keyboard gets very sluggish.