We have a dashboard widget for the Mac that we want to provide to our customers. It seems that the typical delivery method is to have the user download the widget as a zip file then double-click the widget inside of the zip. Is there a way to directly download the widget without having to take the zip step? In other words, is it possible to have a button that they click which results in a popup saying something like: "Do you want to install this dashboard widget?"
No, this is not possible. Widgets consist of multiple files, so they must be downloaded as some sort of archive (whether it's a .zip or something else) and extracted by the user.