RE: Should Datepickers be treated as a Modal Dialog?

If the datepicker is in the form of a modal (a widget with its own close button, and presumably atop a semi-opaque overlay) that temporarily supersedes all other activity, then it should trap focus like a modal. Otherwise, a user could accidently navigate away from the widget and become confused.

I don't see it as any different from a modal containing a small form. I would treat it as a modal dialog, including the role of dialog on the container.

Every example of an "accessible" date picker I have looked at online does not treat the datepicker as a modal dialog. Is this because it is not a seen as a modal dialog but rather a specific task based widget? Should the datepicker container <div> take on the same characteristics as a modal such as hiding the background from screen readers when the datepicker calendar is active?

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