On Wed, Nov 3, 2021 at 7:13 PM Anupam Snigdha <[email protected]>
wrote:
> This is a good scenario, but I'm not sure if this can be solved using the
> current design. You probably want a promise to the ClipboardItem? Also, I
> think the MIME type in the Clipboarditem is only useful when we are
> specifying DOMString instead of Blobs, which is currently not supported in
> Chromium. If we create a Blob after the data has been populated, then we
> can probably just use the MIME type from the Blob during the clipboard
> write operation. This feature can be implemented just like the promises to
> blobs without breaking the sites that use ClipboardItem instead of promises
> to ClipboardItem, so we should definitely consider adding this to the async
> clipboard API in the future.
> The promises to Blobs feature unblocks some of the key scenarios in Excel
> online as well as scenarios where a promise to the Blob helps in creating
> the Blob asynchronously without losing the transient user activation delay,
> so I think this feature will still be useful even if we implement promise
> to ClipboardItem.
>
Taking one step back, in my ideal world, Safari would just let me do the
following without expiring the user gesture:
// Works in Chromium, throws in Safari…
const { data, type } = await getDataOfUnknownType();
const blob = new Blob([data], { type });
navigator.clipboard.write([
new ClipboardItem({
[blob.type]: blob,
}),
]);
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