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Allow closing a dropdown be prevented when certain elements are tapped #17
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(`core-dropdown-keep') that prevents them from being evaluated for closing the dropdown on tap. This is useful for instance if you have a search form, etc. within the dropdown that you want the user to be able to tap on without closing the menu.
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Hello all the Polymer people!
I think it would be a pretty useful feature to have the ability to prevent core-dropdown-base (and by extension, core-dropdown-menu and paper-dropdown-menu) from closing the overlay when certain elements are tapped. A good example would be a search form to filter the items provided in the dropdown.
I've come up with quite a simple way to do this by providing an attribute (core-dropdown-keep, though I'm not too sure that that's the best name) that you can set on an element in the overlay, which causes the toggleOverlay method to ignore it when it reacts to a tap.
Please let me know what you think about this.
Best regards,
Niels