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Bug 223051

Summary:	AssertionError at org.netbeans.modules.web.webkit.debugging.TransportHelper.sendBlockingCommand
Product:	web	Reporter:	Petr Jiricka <pjiricka>
Component:	HTML Navigator	Assignee:	Jan Becicka <jbecicka>
Status:	RESOLVED FIXED
Severity:	normal	CC:	dkonecny, jstola, mfukala, miraged, vriha
Priority:	P2
Version:	7.3
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	195930
Attachments:	stacktrace stacktrace stacktrace

Description Petr Jiricka 2012-11-30 13:12:13 UTC

Build: NetBeans IDE Dev (Build web-main-9389-on-20121130)
VM: Java HotSpot(TM) 64-Bit Server VM, 23.6-b04, Java(TM) SE Runtime Environment, 1.7.0_10-ea-b15
OS: Mac OS X

User Comments:
pjiricka: I believe it was:

1. Created the BackboneWineCellar sample HTML5 project
2. Close index.html
3. Run it in Chrome
4. Enable select mode and select "2009 Syrah Washington, USA"
5. In the popup menu of the selected node in navigator, select Go to Source




Stacktrace: 
java.lang.AssertionError
   at org.netbeans.modules.web.webkit.debugging.TransportHelper.sendBlockingCommand(TransportHelper.java:113)
   at org.netbeans.modules.web.webkit.debugging.api.Runtime.evaluate(Runtime.java:117)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel.invokeInAllDocuments(WebKitPageModel.java:662)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.updateSelection(WebKitPageModel.java:887)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.updateSelection(WebKitPageModel.java:881)
   at org.netbeans.modules.web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.updateSelection(WebKitPageModel.java:877)

Comment 1 Petr Jiricka 2012-11-30 13:12:16 UTC

Created attachment 128647 [details]
stacktrace

Comment 2 Petr Jiricka 2012-11-30 13:19:31 UTC

Now happens to me after every keystroke in index.html => P2.

Comment 3 Vladimir Riha 2012-11-30 13:35:36 UTC

Created attachment 128651 [details]
stacktrace

To reproduce:
- run some html file in Chrome 
- start Inspect Mode (note that Navigator contains some dynamic elements)
- left click on ANY element in Navigator

Comment 4 Marek Fukala 2012-11-30 14:17:34 UTC

Created attachment 128656 [details]
stacktrace

Comment 5 Marek Fukala 2012-11-30 14:18:42 UTC

this IMO belongs to web.inspect as 

web.inspect.webkit.WebKitPageModel$WebPaneSynchronizer.updateSelection() calls the TransportHelper.sendBlockingCommand() in EDT.

Comment 6 Jan Stola 2012-11-30 14:44:08 UTC

This is a regression caused by
http://hg.netbeans.org/web-main/rev/e433cf9cd71b
Honzo B., what was the reason for this change? Could you, please, revert it, i.e., stop calling Page.setSelectedNodes() in event-dispatch thread.

I understand that you overlooked that because the assertion is thrown when the Select Mode is turned on in the browser only. I should probably add another assertion into setSelectedNodes() directly to catch this kind of problems immediately.

Comment 7 Jan Stola 2012-11-30 15:54:52 UTC

I have reverted the mentioned change. Honzo B., please, let me know if there was some strong reason for it. If so, then we will have to resolve it in a different way. Thank you in advance.

Modified file: http://hg.netbeans.org/web-main/rev/f5d91a212f18

Comment 8 Jan Becicka 2012-12-03 08:31:31 UTC

Thanks and sorry. There is some minor issue with selection, which needs to be resolved.