[Webkit-unassigned] [Bug 173838] New: [iOS DnD] [WK2] Beginning a drag session should prevent clicking via long press

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173838

            Bug ID: 173838
           Summary: [iOS DnD] [WK2] Beginning a drag session should
                    prevent clicking via long press
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: wenson_hsieh at apple.com

After r218579, WebKit no longer attempts to replace out-of-the-box UIKit long-press/drag lift disambiguation by firing events immediately. However, this means that dragging will defer the highlight long press gesture recognizer until dragging ends rather than cancel it immediately, which causes WKContentView to dispatch a synthetic click immediately upon lift. To fix this, we should bail out of the highlight long press gesture when beginning a drag.

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