[Webkit-unassigned] [Bug 66547] New: dragleave does not include e.relatedTarget

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=66547

           Summary: dragleave does not include e.relatedTarget
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: http://jsfiddle.net/pimvdb/HU6Mk/8/
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pimvdb at live.nl


Created an attachment (id=104491)
 --> (https://bugs.webkit.org/attachment.cgi?id=104491&action=review)
Test case

Scenario:

 - a drag element
 - a drop target element, which has a child element
 - drop target element has a 'dragleave' event bound which uses e.relatedTarget


Problem:

In the event handler for 'dragleave', 'e.relatedTarget' is null. This is unfortunate, because when dragging inside the drop target element from the parent into the child, 'e.relatedTarget' is not the parent element. As a result, it is impossible to determine whether the dragging is still happening inside the parent element or that the mouse dragged outside the parent element.

This property is available on Firefox and should be available as said in the specification:

http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-eventgroupings-mouseevents

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