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fix(select, autocomplete): no indication of active option in high contrast mode #10229

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Merged
merged 1 commit into from
Mar 6, 2018
Merged

fix(select, autocomplete): no indication of active option in high contrast mode #10229

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17 changes: 17 additions & 0 deletions src/lib/core/option/option.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,23 @@
padding-right: $mat-menu-side-padding * 2;
}
}

@include cdk-high-contrast {
$high-contrast-border-width: 1px;

// Add a margin to offset the border that we're adding to active option, in order
// to avoid the options shifting as the user is moving through the list.
margin: 0 $high-contrast-border-width;

&.mat-active {
// We use a border here, rather than an outline, because the outline will be cut off
// by the `overflow: hidden` on the panel wrapping the options, whereas a border
// will push the element inwards. This could be done using `outline-offset: -1px`,
// however the property isn't supported on IE11.
border: solid $high-contrast-border-width currentColor;
margin: 0;
}
}
}

// Collapses unwanted whitespace created by newlines in code like the following:
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