[Webkit-unassigned] [Bug 91912] New: Adding new value (atomic) for property (-webkit-user-select)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=91912

           Summary: Adding new value (atomic) for property
                    (-webkit-user-select)
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: alice_cheng at apple.com


Extend webkit-user-select property to support unified draggable inline atomic selection for needs of Mail. Here, atomic selection means a visually all-or-nothing selection.

1) added code to correctly parse the new value

2) modified VisibleSelection, VisiblePosition, visible_units, FrameSelection for atomic selection

3) modified DragController, EventHandler to improve the dragging effect

4) added test to test above three modifications

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