Added optional confirmation dialog on deleting images

[fullybaked]

I needed a confirm dialog to prompt the user prior to deleting any images/files once they had been uploaded. Seeing as I modified your code to add it, I thought I'd send over the changes in case you want to include it in the master.

Cheers
Dave

[blueimp]

Thanks for your contribution, Dave.
However I don't plan to incorporate a confirmation dialog at the moment.
In a full blown application, I would probably rather implement an Undo operation.

[dgm]

seriously? Confirmation dialog seems like a must on destructive operations. At the very least there should be a beforeDestroy callback that could cancel the delete by returning false.

[blueimp]

You can simply override the destroy callback, as it is done in the plugin extension guide:
https://github.com/blueimp/jQuery-File-Upload/wiki/Plugin-extensions
Adding your own confirmation dialog is trivial.
Like I said, in a full-blown application, I would prefer an undo operation.

[batter]

@blueimp - This seems like a good option. If people don't want to do use it they don't have to put the data-confirm attribute on the link tag, and then they never see the confirmations. I personally am having difficulty implementing the example you linked to in above.

[Rykus0]

I tried the demo you linked to, and it creates a recursive infinite loop. I'm still pretty new with overriding functionality like this, but I'm researching it now. I thought you might like to know.

Thanks for the excellent plugin!