In fact I have just tried this in all versions of Chrome 37 including the release version and this happens in all of them so it is no longer possible to debug in Chrome since the latest round of updates

Reproducible with NB 8.0 and Dev, thank you for catching that


Java: 1.8.0_05; Java HotSpot(TM) 64-Bit Server VM 25.5-b02
Runtime: Java(TM) SE Runtime Environment 1.8.0_05-b13
System: Linux version 3.11.0-12-generic running on amd64; UTF-8; en_US (nb)

I was able to reproduce this issue using Chromium 38. This bug is a consequence of the recent changes in CSS domain of Webkit debugging protocol used by Chrome.

There have been a lot of changes affecting our support recently:

* removal of CSSStyleSheetBody and CSS.getStyleSheet
https://chromium.googlesource.com/chromium/blink/+/6ca6984c74091cd8e84e99cda38d3f603c374217

* removal of CSSStyleId and CSSRuleId
https://chromium.googlesource.com/chromium/blink/+/6d10739ef5fb858cb0f376926960fc1f81f43d05

* removal of CSSRule.sourceURL
https://chromium.googlesource.com/chromium/blink/+/c3f7d4e447566281a6d895a6af6299d13eea601d

I have modified the corresponding code to handle these changes.

Modified files:
http://hg.netbeans.org/web-main/rev/71ba0c41f309
http://hg.netbeans.org/web-main/rev/84b694bee2f2

Thanks a lot, I'll try it tomorrow.

Thank you, I cannot reproduce this issue so marking as verified.

I tried to test web inspection more thoroughly in Chrome 38 and I've found other issues related to latest Chromium: 245411, 245390, 245400, 245406 or 245410.


Build: NetBeans IDE Dev (Build 201407040001)
VM: Java HotSpot(TM) 64-Bit Server VM, 25.5-b02, Java(TM) SE Runtime Environment, 1.8.0_05-b13
OS: Windows 7

As this is now verified fixed I appreciate this is in the nightly but will this be in an 8.1 patch version?  I only ask as I think a lot of people will be trying to use the inspector functionality as it is marked as a feature and it will not work.

Cheers

Adam

I tried the nightly and it looked like things were better, however, ther are still some issues.  Rules ARE now returned back to netbeans but all the relevant stylesheets come abck as null rather than the correct sheet.  Clicking on one of these refernces gives the following error:
java.lang.NullPointerException: The fileObject parameter cannot be null
	at org.openide.util.Parameters.notNull(Parameters.java:89)
	at org.netbeans.modules.parsing.api.Source.create(Source.java:132)
	at org.netbeans.modules.web.inspect.webkit.actions.GoToRuleSourceAction.actionPerformed(GoToRuleSourceAction.java:114)
	at org.netbeans.modules.web.inspect.webkit.actions.GoToRuleSourceAction$1.run(GoToRuleSourceAction.java:123)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to
	at org.openide.util.RequestProcessor.post(RequestProcessor.java:419)
	at org.netbeans.modules.web.inspect.webkit.actions.GoToRuleSourceAction.actionPerformed(GoToRuleSourceAction.java:120)
	at org.netbeans.modules.web.inspect.webkit.ui.CSSStylesSelectionPanel$5$1.mouseClicked(CSSStylesSelectionPanel.java:375)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:269)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:269)
	at java.awt.Component.processMouseEvent(Component.java:6530)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
	at java.awt.Component.processEvent(Component.java:6292)
	at java.awt.Container.processEvent(Container.java:2234)
	at java.awt.Component.dispatchEventImpl(Component.java:4883)
	at java.awt.Container.dispatchEventImpl(Container.java:2292)
	at java.awt.Component.dispatchEvent(Component.java:4705)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4542)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
	at java.awt.Container.dispatchEventImpl(Container.java:2278)
	at java.awt.Window.dispatchEventImpl(Window.java:2739)
	at java.awt.Component.dispatchEvent(Component.java:4705)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
	at java.awt.EventQueue.access$400(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:697)
	at java.awt.EventQueue$3.run(EventQueue.java:691)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
	at java.awt.EventQueue$4.run(EventQueue.java:719)
	at java.awt.EventQueue$4.run(EventQueue.java:717)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
[catch] at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Also if you select one of the lternative states e.g. hover you get the following error:

java.lang.NullPointerException
	at org.netbeans.modules.web.inspect.webkit.Utilities.findRule(Utilities.java:474)
	at org.netbeans.modules.web.inspect.webkit.Utilities.findRule(Utilities.java:480)
	at org.netbeans.modules.web.inspect.webkit.ui.CSSStylesSelectionPanel$10.run(CSSStylesSelectionPanel.java:674)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
	at java.awt.EventQueue.access$400(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:697)
	at java.awt.EventQueue$3.run(EventQueue.java:691)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
 although this is intermittent.  Sometimes it works, sometimes not.

There is also nothing shown in the properties list it always says no rule selected even when a rule IS selected.

And as previously reported after a few clicks in inspect mode the session is eventually terminated without warning.

Ignore the bit about the rules not showing.  That was user error :) However everything else applies.

Could you please report it as a new issue to web/inspection? Thank you

This fix will be in 8.0.1

Reported as a new bug Issue 245694. Hopefully those can get into 8.0.1 too :) Cheers

Adam

*** Bug 246301 has been marked as a duplicate of this bug. ***

*** Bug 246751 has been marked as a duplicate of this bug. ***