[Webkit-unassigned] [Bug 119305] New: Fix a bug that mousedown without mouseup in a frame disturbs click event in another frame

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=119305

           Summary: Fix a bug that mousedown without mouseup in a frame
                    disturbs click event in another frame
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: Event Handling
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: ap at webkit.org, tkent at chromium.org,
                    benjamin at webkit.org, enrica at apple.com


Consider merging https://chromium.googlesource.com/chromium/blink/+/01502bee2013aeb0c5b300d4b9bb00ba1e45e596

If a mouse button is clicked but mouseup event for it is not dispatched
(it happens frequently because of context menus) and mousedown in
another frame is default-prevented, 'click' event for the latter mouse
click is not dispatched.

EventHandler::m_capturingMouseEventsNode wrongly continues to hold a node
for the first click, and it prevents hit-testing for the second click. We
should alwyas clear m_capturingMouseEventsNode in mousedown handling code.

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