Bug 22144

Summary: REGRESSION: JS error drilling down childless node
Product: WebKit Reporter: Matt Lilek <dev+webkit>
Component: Web Inspector (Deprecated)Assignee: Pavel Feldman <pfeldman>
Status: RESOLVED FIXED    
Severity: Normal CC: pfeldman, timothy, zwarich
Priority: P1 Keywords: Regression
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
URL: http://webkit.org/
Attachments:
Description Flags
patch timothy: review+

Description Matt Lilek 2008-11-08 20:15:41 PST 
Go to <http://webkit.org/> and open the inspector and double click the <body> node then double click the <div id="icon"> node.  The body will successfully become the root object of the tree, but when you do the same for the #icon div, the following JS error is thrown in the console:

.../WebCore.framework/Resources/inspector/ElementsTreeOutline.js:491: JS ERROR: TypeError: Result of expression 'this.treeOutline' [null] is not an object.
Comment 1 Pavel Feldman 2009-09-21 05:32:27 PDT 
The original problem is no longer repeatable. However, following is also a bug:

1) Open inspector using Inspect Element on the "Welcome" topic (important)
2) Double click on body
3) Double click on #icon div

Expected: Contents of body to be displayed
Actual: Contents of the welcome topic is displayed

The problem is that dblclick is being dispatched twice - via explicit listener and via tree element callback. Will issue a patch shortly.
Comment 2 Pavel Feldman 2009-09-21 05:41:21 PDT 
Created attachment 39846 [details]
patch
Comment 3 Pavel Feldman 2009-09-21 14:50:18 PDT 
Committing to http://svn.webkit.org/repository/webkit/trunk ...
	M	WebCore/ChangeLog
	M	WebCore/inspector/front-end/ElementsTreeOutline.js
Committed r48605