[Webkit-unassigned] [Bug 133701] New: Web Inspector: clicking "Show All Nodes" button throws TypeError

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=133701

           Summary: Web Inspector: clicking "Show All Nodes" button throws
                    TypeError
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jonowells at apple.com
                CC: timothy at apple.com, joepeck at webkit.org,
                    webkit-bug-importer at group.apple.com,
                    graouts at webkit.org


Created an attachment (id=232818)
 --> (https://bugs.webkit.org/attachment.cgi?id=232818&action=review)
Test case

To reproduce, open attached 501nodes.html and inspect the DOM. Click the "Show All Nodes" button while inspecting the inspector.

[Error] TypeError: null is not an object (evaluating 'window.getComputedStyle(this._listItemNode).getPropertyCSSValue("padding-left").getFloatValue')
    isEventWithinDisclosureTriangle (TreeOutline.js, line 1067)
    treeElementToggled (TreeOutline.js, line 763)

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