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Focus on Layer Menu Item or Link if Remove Button is clicked #600

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Anshpreet8
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Once a layer is removed using the layer control, the focus shifts to the next layer menu item, if it exists, or the attribution link

Closes #589

@Anshpreet8 Anshpreet8 marked this pull request as draft November 26, 2021 15:46
@Anshpreet8 Anshpreet8 marked this pull request as ready for review November 26, 2021 17:43
@prushforth
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Works very well, tests too. Good work!

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👍

@prushforth prushforth merged commit 3b5eacd into Maps4HTML:main Nov 26, 2021
mapEl.removeChild(e.target.closest("fieldset").querySelector("span").layer._layerEl);
elem = elem ? root.querySelector(".leaflet-control-attribution").firstElementChild: elem = root.querySelectorAll('input')[fieldset];
setTimeout(() => elem.focus(), 800); // a timeout is set so "pressed remove layer" is announced first
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This timeout seems to cause NVDA (using Chrome) to announce the document title + map then next layer/link, I'm not hearing "pressed remove layer". In that sense I think doing without the timeout provides a better experience?

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Using a Mac and voiceover, I hear "pressed remove layer", but if that's the case with NVDA, I could remove the timeout for better consistency

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if that's the case with NVDA, I could remove the timeout for better consistency

There doesn't seem to be a whole lot of guidance on the desired behavior when removing/hiding the currently focused element. But I think removing the timeout provides a similar experience to when e.g. dialog elements are hidden as a result of closing it: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog#result

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Nothing is focused when a layer is removed using the layer control
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