Timothy Flynn b3bfd02e64 LibWeb: Store a list of DataTransferItem on the DataTransfer object ...

When scripts receive a DataTransferItem from any IDL method, the spec
requires we return the same DataTransferItem for a particular item in
the drag data store. Meaning, we cannot just create these on the fly as
needed.

To do this, we store a list of DataTransferItem on the DataTransfer
object. We will return one of these objects any time one is requested by
a script.

It feels a bit weird to have the DataTransfer object store: the drag
data store, a DataTransferItemList, and a list of DataTransferItem. But
this is how other engines implement this as well. It basically has to be
this way as DataTransferItemList is just a proxy to the DataTransfer -
meaning, DataTransfer is the source of truth for all IDL access.

2024-08-22 14:21:13 +02:00

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