Fix 7598: showModalDialogUsingTemplate doesn't blur current editor

[TomMalbran]

Since every dialog has at least one button that is not disabled (to be able to close the dialog), this will set the focus on any other button when the primary one is disabled.

[marcelgerber]

You can't even expect a dialog to have one button. Most have, but some not.

[marcelgerber]

This will select a button in the modal-body if there's one. I believe only buttons in the fooder should be focussed.

[TomMalbran]

You are right. Nice catch!

[TomMalbran]

I just got some time to fix this. It will now try to focus the primary button, then any other button in the footer and finally the actual dialog, which should now actually work for every dialog.

[JeffryBooher]

We not try and set focus to the element with the lowest tabindex first?

[TomMalbran]

I am not sure how that will work. But maybe we can first focus any input.