RFR: 8233955: VM crashes if more than one file are added to ClipboardContent via drag and drop

[Lukasz Kostyra]

On Thu, 11 May 2023 16:24:20 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> modules/javafx.graphics/src/main/native-glass/mac/GlassDraggingSource.m line 44:
>> 
>>> 42:     return self->dragOperation;
>>> 43: }
>>> 44: 
>> 
>> `sourceOperationMaskForDraggingContext` replaces the deprecated `draggingSourceOperationMaskForLocal:` over in GlassViewDelegate.m. There's some logic there that needs to be copied over here. Basically the Apple documentation on how the Cmd key filters the set of available operations doesn't match reality and we have to compensate for that.
>
> This sounds like it could be the reason for the functional regression in handling the CMD modifier while dragging.

Good catch, I'll take a look into that

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PR Review Comment: https://git.openjdk.org/jfx/pull/1089#discussion_r1192270396