On Fri, 22 Oct 2021 17:32:10 GMT, Martin Fox <d...@openjdk.java.net> wrote:
> During a drag-and-drop operation on the Mac the Command key will filter out > every drag source operation except `NSDragOperationGeneric` (this behavior is > provided by the OS). JavaFX drag sources only set the Move, Copy, and Link > drag operation bits so the Command key reduces the set of available > operations to nothing. > > This PR changes nothing about how JavaFX behaves when the dnd operation > involves an external application. As a drag source the same set of operations > will be broadcast and as a drag destination the operations will be > interpreted as they have always been. > > For internal dnd within the JavaFX app `NSDragOperationMove` and > `NSDragOperationGeneric` will both be set if the drag source specifies > `TransferMode.MOVE`. On the other end a drag destination will interpret > `NSDragOperationGeneric` and `NSDragOperationMove` as synonyms. > > As part of this PR it was necessary to verify that `NSDragOperationGeneric` > was not already being used during an internal drag operation. There's a > clause in `mapJavaMaskToNsOperation:` which translates > `com_sun_glass_ui_Clipboard_ACTION_ANY` to `NSDragOperationEvery` and this > includes the Generic bit. I believe this is a red herring, the Java dnd code > converts `TransferMode.ANY` to a bitwise-OR of COPY, MOVE, and REFERENCE so > `com_sun_glass_ui_Clipboard_ACTION_ANY` will never be passed down to the > platform level. This pull request has now been integrated. Changeset: f939d094 Author: Martin Fox <belden...@users.noreply.github.com> Committer: Kevin Rushforth <k...@openjdk.org> URL: https://git.openjdk.java.net/jfx/commit/f939d094e3f02575c77a12c3a986d5f601a65a1d Stats: 87 lines in 3 files changed: 78 ins; 1 del; 8 mod 8227371: Drag&Drop while holding the CMD key does not work on macOS Reviewed-by: pbansal, kcr ------------- PR: https://git.openjdk.java.net/jfx/pull/651
