[Webkit-unassigned] [Bug 188903] New: [Cocoa] Exception (fileType 'dyn.agq8u' is not a valid UTI) raised when dragging an attachment whose file wrapper is a directory

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188903

            Bug ID: 188903
           Summary: [Cocoa] Exception (fileType 'dyn.agq8u' is not a valid
                    UTI) raised when dragging an attachment whose file
                    wrapper is a directory
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: NeedsRadar
          Severity: Normal
          Priority: P2
         Component: HTML Editing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mitz at webkit.org
                CC: wenson_hsieh at apple.com

After using -[WebView _insertAttachmentWithFileWrapper:contentType:options:completion:], passing a NSFileWrapper made from a directory (and nil for the rest of the arguments), dragging the attachment out of the web view causes an exception to be raised:

Exception Name: NSInvalidArgumentException
Description: fileType 'dyn.agq8u' is not a valid UTI
User Info: (null)

0   CoreFoundation                      0x00007fff3a1f9e4c __exceptionPreprocess + 291
1   libobjc.A.dylib                     0x00007fff67ed9efb objc_exception_throw + 48
2   AppKit                              0x00007fff381a8759 -[NSFilePromiseProvider init] + 0
3   WebKit                              0x000000010139555d WebKit::WebViewImpl::startDrag(WebCore::DragItem const&, WebKit::ShareableBitmap::Handle const&)
 + 667
4   WebKit                              0x00000001012fa07a void IPC::handleMessage<Messages::WebPageProxy::StartDrag, WebKit::WebPageProxy, void (WebKit::WebPageProxy::*)(WebCore::DragItem const&, WebKit::ShareableBitmap::Handle const&)>(IPC::Decoder&, WebKit::WebPageProxy*, void (WebKit::WebPageProxy::*)(WebCore::DragItem const&, WebKit::ShareableBitmap::Handle const&))
 + 264

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