I'm using NSOutlineView with view-based rows. I've set it up to allow drag and drop of a row. When the drag is initiated, it throws an exception with the following stack trace:
#0 0x00007fff8b6d4e4a in objc_exception_throw () #1 0x00007fff8d00412d in -[NSObject(NSObject) doesNotRecognizeSelector:] () #2 0x00007fff8cf5f322 in ___forwarding___ () #3 0x00007fff8cf5eea8 in __forwarding_prep_0___ () #4 0x00007fff88c69a1d in -[NSView _layerBackedDisplayRectIgnoringOpacity:inContext:isRootView:] () #5 0x00007fff88bf0104 in -[NSView displayRectIgnoringOpacity:inContext:] () #6 0x00007fff8900fb6f in -[NSTableView _drawView:withCellFrameUnion:inContext:] () #7 0x00007fff8901127f in __70-[NSTableView _dragImageForRowsWithIndexes:tableColumns:event:offset:]_block_invoke_2 () #8 0x00007fff86dc62ae in __NSIndexSetEnumerate () #9 0x00007fff890111fe in __70-[NSTableView _dragImageForRowsWithIndexes:tableColumns:event:offset:]_block_invoke () #10 0x00007fff86dc62ae in __NSIndexSetEnumerate () #11 0x00007fff89010c90 in -[NSTableView _dragImageForRowsWithIndexes:tableColumns:event:offset:] () #12 0x00007fff89011c8f in -[NSTableView _doImageDragUsingRowsWithIndexes:event:pasteboard:source:slideBack:startRow:] () #13 0x00007fff89012c11 in -[NSTableView _performClassicDragOfIndexes:hitRow:event:] () #14 0x00007fff88b79a99 in -[NSTableView _performDragFromMouseDown:] () #15 0x00007fff88b780c7 in -[NSTableView mouseDown:] () #16 0x00007fff88c7d0d1 in -[NSOutlineView mouseDown:] () #17 0x00007fff88b62a58 in -[NSWindow sendEvent:] () #18 0x00007fff88b015d4 in -[NSApplication sendEvent:] () #19 0x00007fff88951a19 in -[NSApplication run] () #20 0x00007fff8893c7a3 in NSApplicationMain () 2014-05-22 13:01:47.040 <app redacted>[12101:303] -[<redacted> contentsAreFlipped]: unrecognized selector sent to instance 0x102105a00 The exception is an unrecognised selector of -contentsAreFlipped (which is a method of CALayer) and the target of the message is my class that is the <item> represented by this row of the table, part of my data model. This seems to be code that is building the drag image. My datasource's -outlineView:writeItems:toPasteboard: has already been called by this time and completed fine as far as I can see. I'm not explicitly using CALayers in my table implementation anywhere, and layer backing is not set in IB. This code is a new implementation of an interface that I previously had working using cell-based rows, but is now using view-based rows. Otherwise things are much the same (except that the old code works and this doesn't). Why would the outline view be assuming that my data model object is a CALayer at this point? Why would it even be attempting to message the data model? Anyone else run into this? It's probably my bug but I'm not seeing it, and *feels* like a framework bug. But surely drag/drop of view-based outline view rows has been tested and works? OS 10.9 and 10.9 SDK. --Graham _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
