61 lines
3.1 KiB
SCSS
61 lines
3.1 KiB
SCSS
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@use '../core/tokens/m2/mat/form-field' as tokens-mat-form-field;
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@use '../core/tokens/token-utils';
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// Mixin that includes the density styles for form fields. MDC provides their own density
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// styles for MDC text-field which we cannot use. MDC relies on input elements to stretch
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// vertically when the height is reduced as per density scale. This doesn't work for our
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// form field since we support custom form field controls without a fixed height. Instead, we
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// provide spacing that makes arbitrary controls align as specified in the Material Design
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// specification. In order to support density, we need to adjust the vertical spacing to be
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// based on the density scale.
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@mixin private-text-field-density-overrides() {
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@include token-utils.use-tokens(
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tokens-mat-form-field.$prefix, tokens-mat-form-field.get-token-slots()) {
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$height: token-utils.get-token-variable(container-height);
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.mat-mdc-form-field-infix {
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// We add a minimum height to the infix container to ensure that custom controls have the
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// same default vertical space as text-field inputs (with respect to the vertical padding).
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min-height: #{$height};
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@include token-utils.create-token-slot(padding-top,
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filled-with-label-container-padding-top);
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@include token-utils.create-token-slot(padding-bottom,
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filled-with-label-container-padding-bottom);
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.mdc-text-field--outlined &,
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.mdc-text-field--no-label & {
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@include token-utils.create-token-slot(padding-top, container-vertical-padding);
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@include token-utils.create-token-slot(padding-bottom, container-vertical-padding);
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}
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}
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// By default, MDC aligns the label using percentage. This will be overwritten based
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// on whether a textarea is used. This is not possible in our implementation of the
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// form-field because we do not know what type of form-field control is set up. Hence
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// we always use a fixed position for the label. This does not have any implications.
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.mat-mdc-text-field-wrapper .mat-mdc-form-field-flex .mat-mdc-floating-label {
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top: calc(#{$height} / 2);
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}
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// We need to conditionally hide the floating label based on the height of the form field.
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.mdc-text-field--filled .mat-mdc-floating-label {
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display: token-utils.get-token-variable(filled-label-display, $fallback: block);
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}
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// For the outline appearance, we re-create the active floating label transform. This is
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// necessary because the transform for docked floating labels can be updated to account for
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// the width of prefix container.
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.mat-mdc-text-field-wrapper.mdc-text-field--outlined .mdc-notched-outline--upgraded
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.mdc-floating-label--float-above {
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// Needs to be in a string form to work around an internal check that incorrectly flags this
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// interpolation in `calc` as unnecessary. If we don't have it, Sass won't evaluate it.
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$offset: 'calc(6.75px + #{$height} / 2)';
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$translate: 'calc(#{$offset} * -1)';
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--mat-mdc-form-field-label-transform: translateY(#{$translate})
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scale(var(--mat-mdc-form-field-floating-label-scale, 0.75));
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transform: var(--mat-mdc-form-field-label-transform);
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}
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}
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}
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