[Webkit-unassigned] [Bug 133114] New: Implement "touch-action:manipulation" Pointer Events CSS property to suppress 300ms touch > mouse compatibility events delay

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=133114

           Summary: Implement "touch-action:manipulation" Pointer Events
                    CSS property to suppress 300ms touch > mouse
                    compatibility events delay
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: https://dvcs.w3.org/hg/pointerevents/raw-file/tip/poin
                    terEvents.html#the-touch-action-css-property
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Events
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: redux at splintered.co.uk
                CC: benjamin at webkit.org


Although there seems to be no immediate desire to implement the full Pointer Events specification (see https://bugs.webkit.org/show_bug.cgi?id=105463), it may be worth considering at least supporting the touch-action:manipulation CSS property/value. 
This recent addition (the "manipulation" value) to the Pointer Events specification is used - in essence - to allow developers to suppress the classic 300ms delay present on touchscreen devices that by default allows for "double-tap to zoom", while retaining other abilities such as scrolling and pinch-to-zoom. It offers a compromise to the often drastic preventDefault() commonly used in touch-optimised applications (which does remove the 300ms delay, but also kills any other default interactions).

touch-action:manipulation is on track to be rolled out in both Firefox and Chrome - see

"Bug 979345 - Implement "touch-action: manipulation" CSS value for Pointer Events" https://bugzilla.mozilla.org/show_bug.cgi?id=979345
"Issue 349016:    Add support for touch-action: manipulation" https://code.google.com/p/chromium/issues/detail?id=349016

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