The dashed-border upload area in `PhotoUpload` (admin) and
`UserPhotoUpload` (gallery user-upload) is styled and labelled as a
drop zone — every locale's `upload.clickToUpload` already reads
"Click to upload or drag and drop" or its translation — but neither
component had any `onDragOver` / `onDragEnter` / `onDragLeave` /
`onDrop` handlers. Files dropped on the zone fell through to the
browser's default behaviour (open the image in a new tab), which is
what Rekoo-PS reported.
Added native HTML5 drag-and-drop wiring on both components, plumbed
through the same filter/limit/toast pipeline used by the click path
(`addFiles` helper). Visual highlight on drag-over via an `isDragOver`
flag; the listener guards against the `dragleave` strobing that fires
on every child node. Also reset the `<input>` value after onChange so
re-picking the same file still triggers an upload — matches the
new drop-then-pick mental model.
Paul Nothaft
577c4bdf29