Bug ID: JDK-8242805 The macOS toolkit does not support ACTION

JDK-8242805 : The macOS toolkit does not support ACTION_COPY DnD action via CTRL+Click

Type: Bug
Component: client-libs
Sub-Component: java.awt
Affected Version: 11,14,15,16,17,19

Priority: P3
Status: Open
Resolution: Unresolved
OS: os_x
CPU: generic

Submitted: 2020-04-15
Updated: 2025-03-14

Versions (Unresolved/Resolved/Fixed)

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Other
tbdUnresolved

Related Reports

Duplicate :	JDK-8252675 - [macos] DropTargetInInternalFrameTest.html failed on macOS
Relates :	JDK-8242174 - [macos] The NestedModelessDialogTest test make the macOS unstable
Relates :	JDK-8340713 - Open source DnD tests - Set5
Relates :	JDK-8265742 - [macos] Control+Click will invoke ACTION_COPY in a drag and drop application on MacOS

Description

According to the spec 
https://docs.oracle.com/javase/7/docs/api/java/awt/dnd/DragSourceDragEvent.html

The Ctrl+Click should cause ACTION_COPY action but in fact, ACTION_NONE is occurred during the drop.

We have a few tests for this functionality:
java/awt/dnd/CustomDragCursorTest/CustomDragCursorTest.html
java/awt/dnd/DnDCursorCrashTest/DnDCursorCrashTest.html
java/awt/dnd/DnDRemoveFocusOwnerCrashTest/DnDRemoveFocusOwnerCrashTest.html
java/awt/dnd/DragExitBeforeDropTest/DragExitBeforeDropTest.html
java/awt/dnd/DroppingVMCrashTest/DroppingVMCrashTest.html

But unfortunately, all of them pass on macOS due to bug in the robot, which skips the pressing Ctrl and run DnD just by mouse.

Comments

I have checked, that if I disable robot, and execute the steps manually the tests fail.

15-04-2020