'Is it possible to drag & drop between custom VS Code tree views?
The 1.66 (March 2022) release introduces a TreeDragAndDropController API which allows for handling drag & drop events for custom tree views.
However in the docs for the DataTransfer object is says:
Drag and drop controllers that implement {@link TreeDragAndDropController.handleDrag
handleDrag} can add additional mime types to the data transfer. These additional mime types will only be included in thehandleDropwhen the the drag was initiated from an element in the same drag and drop controller.
Does this mean that you cannot drag & drop between custom tree views as they would typically have a custom drag & drop controller per view? Or that you're meant to re-use a drag & drop controller between tree views in order to enable dragging & dropping between views?
I have tried various combinations and been unsuccessful in getting a full drag & drop between two tree views. I do see an error in the console on drop in some situations but that is about it.
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Source: Stack Overflow
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