Parameters for dnd.prepareDrag.
Exchange paths for a one-shot token that lets the next drag out of this window carry those files. Parameter shape errors are reported first; then the document origin is checked (ORIGIN_DENIED) before any path is resolved or validated, then the window's dragOut capability (NOT_SUPPORTED), then each path must resolve to a local file (INVALID_PATH) and pass path security (PERMISSION_DENIED).
Locations to drag out: native paths, file:// and file-relative:// URLs, archive:// / unpack:// entries, and path|subsong:N. File existence is not checked.
Parameters for
dnd.prepareDrag. Exchange paths for a one-shot token that lets the next drag out of this window carry those files. Parameter shape errors are reported first; then the document origin is checked (ORIGIN_DENIED) before any path is resolved or validated, then the window'sdragOutcapability (NOT_SUPPORTED), then each path must resolve to a local file (INVALID_PATH) and pass path security (PERMISSION_DENIED).