// Form control focus state // // Generate a customized focus state and for any input with the specified color, // which defaults to the `$input-focus-border-color` variable. // // We highly encourage you to not customize the default value, but instead use // this to tweak colors on an as-needed basis. This aesthetic change is based on // WebKit's default styles, but applicable to a wider range of browsers. Its // usability and accessibility should be taken into account with any change. // // Example usage: change the default blue border and shadow to white for better // contrast against a dark gray background. @mixin form-control-focus($ignore-warning: false) { &:focus { color: $input-focus-color; background-color: $input-focus-bg; border-color: $input-focus-border-color; outline: 0; @if $enable-shadows { @include box-shadow($input-box-shadow, $input-focus-box-shadow); } @else { // Avoid using mixin so we can pass custom focus shadow properly box-shadow: $input-focus-box-shadow; } } @include deprecate("The `form-control-focus()` mixin", "v4.4.0", "v5", $ignore-warning); } // This mixin uses an `if()` technique to be compatible with Dart Sass // See https://github.com/sass/sass/issues/1873#issuecomment-152293725 for more details @mixin form-validation-state-selector($state) { @if ($state == "valid" or $state == "invalid") { .was-validated #{if(&, "&", "")}:#{$state}, #{if(&, "&", "")}.is-#{$state} { @content; } } @else { #{if(&, "&", "")}.is-#{$state} { @content; } } } @mixin form-validation-state($state, $color, $icon) { .#{$state}-feedback { display: none; width: 100%; margin-top: $form-feedback-margin-top; @include font-size($form-feedback-font-size); color: $color; } .#{$state}-tooltip { position: absolute; top: 100%; left: 0; z-index: 5; display: none; max-width: 100%; // Contain to parent when possible padding: $form-feedback-tooltip-padding-y $form-feedback-tooltip-padding-x; margin-top: .1rem; @include font-size($form-feedback-tooltip-font-size); line-height: $form-feedback-tooltip-line-height; color: color-yiq($color); background-color: rgba($color, $form-feedback-tooltip-opacity); @include border-radius($form-feedback-tooltip-border-radius); // See https://github.com/twbs/bootstrap/pull/31557 // Align tooltip to form elements .form-row > .col > &, .form-row > [class*="col-"] > & { left: $form-grid-gutter-width / 2; } } @include form-validation-state-selector($state) { ~ .#{$state}-feedback, ~ .#{$state}-tooltip { display: block; } } .form-control { @include form-validation-state-selector($state) { border-color: $color; @if $enable-validation-icons { padding-right: $input-height-inner; background-image: escape-svg($icon); background-repeat: no-repeat; background-position: right $input-height-inner-quarter center; background-size: $input-height-inner-half $input-height-inner-half; } &:focus { border-color: $color; box-shadow: 0 0 0 $input-focus-width rgba($color, .25); } } } // stylelint-disable-next-line selector-no-qualifying-type textarea.form-control { @include form-validation-state-selector($state) { @if $enable-validation-icons { padding-right: $input-height-inner; background-position: top $input-height-inner-quarter right $input-height-inner-quarter; } } } .custom-select { @include form-validation-state-selector($state) { border-color: $color; @if $enable-validation-icons { padding-right: $custom-select-feedback-icon-padding-right; background: $custom-select-background, $custom-select-bg escape-svg($icon) $custom-select-feedback-icon-position / $custom-select-feedback-icon-size no-repeat; } &:focus { border-color: $color; box-shadow: 0 0 0 $input-focus-width rgba($color, .25); } } } .form-check-input { @include form-validation-state-selector($state) { ~ .form-check-label { color: $color; } ~ .#{$state}-feedback, ~ .#{$state}-tooltip { display: block; } } } .custom-control-input { @include form-validation-state-selector($state) { ~ .custom-control-label { color: $color; &::before { border-color: $color; } } &:checked { ~ .custom-control-label::before { border-color: lighten($color, 10%); @include gradient-bg(lighten($color, 10%)); } } &:focus { ~ .custom-control-label::before { box-shadow: 0 0 0 $input-focus-width rgba($color, .25); } &:not(:checked) ~ .custom-control-label::before { border-color: $color; } } } } // custom file .custom-file-input { @include form-validation-state-selector($state) { ~ .custom-file-label { border-color: $color; } &:focus { ~ .custom-file-label { border-color: $color; box-shadow: 0 0 0 $input-focus-width rgba($color, .25); } } } } }