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How to execute ajax action after image file upload with media widget?

I want to prepopulate some node fields with image metadata (using the EXIF module) right after an image is uploaded/inserted in a node image field with media browser widget and before the node is being saved.

By default, the EXIF module updates the node fields with image metadata after the node is being saved. But, ideally, I would like to hook into the file upload process and update the node fields instantly with ajax, so that users can preview and even edit the metadata related fields.

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How to execute ajax action after image file upload with media widget?

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