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fix(is-visible-on-screen): ignore elements hidden by overflow:hidden #3676

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merged 7 commits into from Oct 10, 2022

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straker
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@straker straker commented Sep 26, 2022

This also fixes a bug in svg-non-empty-title that was discovered by this change in that it used visibleVirtual to get the title text. title elements aren't visible so it should instead use subtreeText and allow hidden elements.

For the previous overflowHidden function, I found that it was added to handle a screen reader only styling. I made sure the code still works with the new functionality.

Closes issue: #3247 and #2806

@straker straker requested a review from a team as a code owner September 26, 2022 17:12
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@WilcoFiers WilcoFiers left a comment

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Mostly done, wrapping up for the day though.

lib/checks/shared/svg-non-empty-title-evaluate.js Outdated Show resolved Hide resolved
lib/commons/math/rects-touch.js Outdated Show resolved Hide resolved
lib/commons/math/rects-touch.js Outdated Show resolved Hide resolved
lib/commons/dom/visibility-methods.js Outdated Show resolved Hide resolved
ancestors.push(vNode);
}

return ancestors.concat(getOverflowHiddenNodes(vNode.parent));
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Double points for the clean recursion 😄.

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Couple minor points

test/commons/math/rects-touch.js Outdated Show resolved Hide resolved
test/commons/math/rects-touch.js Outdated Show resolved Hide resolved

let rectA, rectB;
beforeEach(() => {
rectA = {
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Not strictly necessary, but you could consider using DOMRect in these tests. (I only learned of these a week ago, otherwise I might've used them in target-size stuff.)

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Not a bad idea. If the tests were more complicated I might consider that, but since it's a simple test I'll just leave it as is.

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2 participants