[Webkit-unassigned] [Bug 128924] New: Shifted document touch handling in iframes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=128924

           Summary: Shifted document touch handling in iframes
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: iOS
        OS/Version: iOS 7.0
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Event Handling
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: hero at engineeriam.net


Created an attachment (id=224406)
 --> (https://bugs.webkit.org/attachment.cgi?id=224406&action=review)
illustrates the problem

Touch events bound to iframe document node is not handled correctly, if topmost window iframe parents has no touch events bound.

How-to reproduce:
- Put the iframe into div with margin-left 150px
- Bind touchend to document inside the iframe 
- Iframe area which is 150px from the right border will not trigger touch events

Workarounds:
- Bind touch event to any iframe parent node in the topmost window (even iframe element itself)
- Listen to body touch instead of the document node

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