Wikimedia Bugzilla is closed!

I think the following situations should trigger an event: (arguments to pass)
* Switch to a new page (page-DOM-object, page caption)
* Success: 
** Upload (file name, UI-upload-item-DOM-object)
** Publish (file name, UI-upload-item-DOM-object)
* Error:
** Upload (file name, UI-upload-item-DOM-object, raw API-response)
** Publish (file name, UI-upload-item-DOM-object, raw API-response)

... and perhaps more like "before publish"

How an implementation could look like? What do I imagine:
$(document).triggerHandler('upwiz',
 'community event',
 'error',
 'publish',
 upload.name,
 <DOM NODE>,
 jqXHR.response
)