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File: Fix the undo trap #39215

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Mar 4, 2022
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10 changes: 7 additions & 3 deletions packages/block-library/src/file/edit.js
Original file line number Diff line number Diff line change
Expand Up @@ -90,7 +90,10 @@ function FileEdit( {
[ id ]
);

const { toggleSelection } = useDispatch( blockEditorStore );
const {
toggleSelection,
__unstableMarkNextChangeAsNotPersistent,
} = useDispatch( blockEditorStore );

useEffect( () => {
// Upload a file drag-and-dropped into the editor.
Expand All @@ -112,11 +115,12 @@ function FileEdit( {
}, [] );

useEffect( () => {
if ( ! fileId ) {
if ( ! fileId && href ) {
// Add a unique fileId to each file block.
__unstableMarkNextChangeAsNotPersistent();
setAttributes( { fileId: `wp-block-file--media-${ clientId }` } );
}
}, [ fileId, clientId ] );
}, [ href, fileId, clientId ] );

function onSelectFile( newMedia ) {
if ( newMedia && newMedia.url ) {
Expand Down