// The original select2 bootstrap is overriden here to make it work with bootstrap 4 // using this // github.com/angel-vladov/select2-bootstrap-theme/blob/master/src/select2-bootstrap.scss // // We used this gist before: // gist.github.com/DaleMckeown/82995dcc482650f130a708f11a66a2a6
// // Functions // ————————————————–
/**
* We need a clone of bootstrap color-yiq mixin so we can get the same value for color */
@function bs4-color-yiq($color) {
$r: red($color); $g: green($color); $b: blue($color); $yiq: (($r * 299) + ($g * 587) + ($b * 114)) / 1000; @if ($yiq >= 150) { @return "#111"; } @else { @return "#fff"; }
}
// // Variables // ————————————————–
// Variables directly translating Bootstrap variables // ————————-
$s2bs-enable-shadows: $enable-shadows !default; $s2bs-border-radius-base: $border-radius !default; $s2bs-border-radius-large: $border-radius-lg !default; $s2bs-border-radius-small: $border-radius-sm !default; $s2bs-btn-default-bg: $input-group-addon-bg !default; // or $gray-200 $s2bs-btn-default-border: theme-color(“secondary”) !default; $s2bs-btn-default-color: bs4-color-yiq($s2bs-btn-default-bg) !default; $s2bs-caret-width-base: .25rem !default; // 4px $s2bs-caret-width-large: .3125rem !default; // 5px
$s2bs-cursor-disabled: not-allowed !default; $s2bs-dropdown-header-color: $dropdown-header-color !default; $s2bs-dropdown-link-active-bg: $dropdown-link-active-bg !default; $s2bs-dropdown-link-active-color: $dropdown-link-active-color !default; $s2bs-dropdown-link-disabled-color: $dropdown-link-disabled-color !default; $s2bs-dropdown-link-hover-bg: $dropdown-link-hover-bg !default; $s2bs-dropdown-link-hover-color: $dropdown-link-hover-color !default; $s2bs-font-size-base: $font-size-base !default; $s2bs-font-size-large: $font-size-lg !default; $s2bs-font-size-small: $font-size-sm !default;
@if variable-exists(input-font-size) {
// Added in Bootstrap 4.2 //noinspection SassScssUnresolvedVariable $s2bs-font-size-base: $input-font-size !default;
}
@if variable-exists(input-font-size-lg) {
// Added in Bootstrap 4.2 //noinspection SassScssUnresolvedVariable $s2bs-font-size-large: $input-font-size-lg !default;
}
@if variable-exists(input-font-size-sm) {
// Added in Bootstrap 4.2 //noinspection SassScssUnresolvedVariable $s2bs-font-size-small: $input-font-size-sm !default;
}
$s2bs-padding-base-horizontal: $input-btn-padding-x !default; $s2bs-padding-large-horizontal: $input-btn-padding-x-lg !default; $s2bs-padding-small-horizontal: $input-btn-padding-x-sm !default; $s2bs-padding-base-vertical: $input-btn-padding-y !default; $s2bs-padding-large-vertical: $input-btn-padding-y-lg !default; $s2bs-padding-small-vertical: $input-btn-padding-y-sm !default; $s2bs-line-height-base: $input-btn-line-height !default; $s2bs-line-height-large: $input-btn-line-height !default; $s2bs-line-height-small: $input-btn-line-height !default; $s2bs-input-bg: $input-bg !default; $s2bs-input-bg-disabled: $input-disabled-bg !default; $s2bs-input-color: $input-color !default; $s2bs-input-color-placeholder: $input-placeholder-color !default; $s2bs-input-border: $input-border-color !default; $s2bs-input-border-focus: $input-focus-border-color !default; $s2bs-input-border-radius: $input-border-radius !default; $s2bs-input-height-base: $input-height !default; $s2bs-input-height-large: $input-height-lg !default; $s2bs-input-height-small: $input-height-sm !default; $s2bs-state-warning-text: theme-color(“warning”) !default; $s2bs-state-danger-text: $form-feedback-invalid-color !default; $s2bs-state-success-text: $form-feedback-valid-color !default;
// Theme-specific variables // ————————-
$s2bs-dropdown-arrow-color: $s2bs-input-color-placeholder !default; $s2bs-dropdown-box-shadow: 0 6px 12px rgba(0,0,0,.175) !default; $s2bs-dropdown-box-shadow-above: 0px -6px 12px rgba(0,0,0,.175) !default; $s2bs-clear-selection-color: $s2bs-dropdown-arrow-color !default; $s2bs-clear-selection-hover-color: $s2bs-btn-default-color !default; $s2bs-remove-choice-color: $s2bs-input-color-placeholder !default; $s2bs-remove-choice-hover-color: $s2bs-btn-default-color !default; $s2bs-selection-choice-border-radius: $s2bs-border-radius-base !default; $s2bs-dropdown-header-padding-vertical: $s2bs-padding-base-vertical !default; $s2bs-dropdown-header-font-size: $s2bs-font-size-small !default;
// Form control variables // ————————- $s2bs-form-control-box-shadow: $input-box-shadow !default; $s2bs-form-control-focus-box-shadow: $input-focus-box-shadow !default; $s2bs-form-control-transition: $input-transition !default;
// // Mixins // ————————————————–
// @see github.com/twbs/bootstrap/blob/v4.0.0/scss/_forms.scss#L8 @mixin bootstrap-input-defaults {
@include box-shadow($s2bs-form-control-box-shadow); @include border-radius($s2bs-input-border-radius); @include transition($s2bs-form-control-transition); background-color: $s2bs-input-bg; border: 1px solid $s2bs-input-border; color: $s2bs-input-color; font-size: $s2bs-font-size-base;
}
// @see getbootstrap.com/docs/4.0/components/forms/#validation // @see github.com/twbs/bootstrap-sass/blob/master/assets/stylesheets/bootstrap/_forms.scss#L388 @mixin validation-state-focus($color) {
$shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten($color, 20%); .select2-dropdown, .select2-selection { border-color: $color; } .select2-container--focus .select2-selection, .select2-container--open .select2-selection { @include box-shadow($shadow); border-color: darken($color, 10%); &:focus { box-shadow: 0 0 0 .2rem rgba($color,.25); } } &.select2-drop-active { border-color: darken($color, 10%); &.select2-drop.select2-drop-above { border-top-color: darken($color, 10%); } }
}
// dropdown arrow when dropdown is open @mixin dropdown-arrow {
.select2-selection--single { /** * Make the dropdown arrow point up while the dropdown is visible. */ .select2-selection__arrow b { border-color: transparent transparent $s2bs-dropdown-arrow-color transparent; border-width: 0 $s2bs-caret-width-large $s2bs-caret-width-large $s2bs-caret-width-large; } }
}
.select2-container–bootstrap {
display: block; /*------------------------------------*\ #COMMON STYLES \*------------------------------------*/ .select2-selection { @include bootstrap-input-defaults; outline: 0; &.form-control { @include border-radius($s2bs-border-radius-base); } } /** * Search field in the Select2 dropdown. */ .select2-search--dropdown { .select2-search__field { @include bootstrap-input-defaults; } } /** * No outline for all search fields - in the dropdown * and inline in multi Select2s. */ .select2-search__field { outline: 0; &::-webkit-input-placeholder { color: $s2bs-input-color-placeholder; } /* Firefox 18- */ &:-moz-placeholder { color: $s2bs-input-color-placeholder; } /** * Firefox 19+ * * @see http://stackoverflow.com/questions/24236240/color-for-styled-placeholder-text-is-muted-in-firefox */ &::-moz-placeholder { color: $s2bs-input-color-placeholder; opacity: 1; } &:-ms-input-placeholder { color: $s2bs-input-color-placeholder; } } /** * Adjust Select2's choices hover and selected styles to match * Bootstrap 4's default dropdown styles. * * @see https://getbootstrap.com/docs/4.0/components/dropdowns/ */ .select2-results__option { padding: $s2bs-padding-base-vertical $s2bs-padding-base-horizontal; &[role=group] { padding: 0; } /** * Disabled results. * * @see https://select2.github.io/examples.html#disabled-results */ &[aria-disabled=true] { color: $s2bs-dropdown-link-disabled-color; cursor: $s2bs-cursor-disabled; } /** * Hover state. */ &[aria-selected=true] { background-color: $s2bs-dropdown-link-hover-bg; color: $s2bs-dropdown-link-hover-color; } /** * Selected state. */ &--highlighted[aria-selected] { background-color: $s2bs-dropdown-link-active-bg; color: $s2bs-dropdown-link-active-color; } .select2-results__option { padding: $s2bs-padding-base-vertical $s2bs-padding-base-horizontal; .select2-results__group { padding-left: 0; } .select2-results__option { margin-left: -$s2bs-padding-base-horizontal; padding-left: $s2bs-padding-base-horizontal*2; .select2-results__option { margin-left: -$s2bs-padding-base-horizontal*2; padding-left: $s2bs-padding-base-horizontal*3; .select2-results__option { margin-left: -$s2bs-padding-base-horizontal*3; padding-left: $s2bs-padding-base-horizontal*4; .select2-results__option { margin-left: -$s2bs-padding-base-horizontal*4; padding-left: $s2bs-padding-base-horizontal*5; .select2-results__option { margin-left: -$s2bs-padding-base-horizontal*5; padding-left: $s2bs-padding-base-horizontal*6; } } } } } } } .select2-results__group { color: $s2bs-dropdown-header-color; display: block; padding: $s2bs-dropdown-header-padding-vertical $s2bs-padding-base-horizontal; font-size: $s2bs-dropdown-header-font-size; line-height: $s2bs-line-height-base; white-space: nowrap; } &.select2-container--focus, &.select2-container--open { .select2-selection { border-color: $s2bs-input-border-focus; @if $s2bs-enable-shadows { box-shadow: $s2bs-form-control-box-shadow, $s2bs-form-control-focus-box-shadow; } @else { box-shadow: $s2bs-form-control-focus-box-shadow; } } } &.select2-container--open { /** * Make the dropdown arrow point up while the dropdown is visible. */ .select2-selection .select2-selection__arrow b { border-color: transparent transparent $s2bs-dropdown-arrow-color transparent; border-width: 0 $s2bs-caret-width-base $s2bs-caret-width-base $s2bs-caret-width-base; } /** * Handle border radii of the container when the dropdown is showing. */ &.select2-container--below { .select2-selection { @include border-bottom-radius(0); border-bottom-color: transparent; box-shadow: none; } } &.select2-container--above { .select2-selection { @include border-top-radius(0); border-top-color: transparent; box-shadow: none; } } } /** * Clear the selection. */ .select2-selection__clear { color: $s2bs-clear-selection-color; cursor: pointer; float: right; font-weight: bold; margin-right: 10px; &:hover { color: $s2bs-clear-selection-hover-color; } } /** * Address disabled Select2 styles. * * @see https://select2.github.io/examples.html#disabled * @see hhttps://getbootstrap.com/docs/4.0/components/forms/#disabled-forms */ &.select2-container--disabled { .select2-selection { border-color: $s2bs-input-border; @include box-shadow(none); } .select2-selection, .select2-search__field { cursor: $s2bs-cursor-disabled; } .select2-selection, .select2-selection--multiple .select2-selection__choice { background-color: $s2bs-input-bg-disabled; } .select2-selection__clear, .select2-selection--multiple .select2-selection__choice__remove { display: none; } } /*------------------------------------*\ #DROPDOWN \*------------------------------------*/ /** * Dropdown border color and box-shadow. */ .select2-dropdown { @include box-shadow($s2bs-dropdown-box-shadow); border-color: $s2bs-input-border-focus; overflow-x: hidden; margin-top: -1px; &--above { @include box-shadow($s2bs-dropdown-box-shadow-above); margin-top: 1px; } } /** * Limit the dropdown height. */ .select2-results > .select2-results__options { max-height: 200px; overflow-y: auto; } /*------------------------------------*\ #SINGLE SELECT2 \*------------------------------------*/ .select2-selection--single { height: $s2bs-input-height-base; line-height: $s2bs-line-height-base; padding: $s2bs-padding-base-vertical ($s2bs-padding-base-horizontal + $s2bs-caret-width-base*3) $s2bs-padding-base-vertical $s2bs-padding-base-horizontal; /** * Adjust the single Select2's dropdown arrow button appearance. */ .select2-selection__arrow { position: absolute; bottom: 0; right: $s2bs-padding-base-horizontal / 2; top: 0; width: $s2bs-caret-width-base; b { border-color: $s2bs-dropdown-arrow-color transparent transparent transparent; border-style: solid; border-width: $s2bs-caret-width-base $s2bs-caret-width-base 0 $s2bs-caret-width-base; height: 0; left: 0; margin-left: -$s2bs-caret-width-base; margin-top: -$s2bs-caret-width-base/2; position: absolute; top: 50%; width: 0; } } .select2-selection__rendered { color: $s2bs-input-color; padding: 0; } .select2-selection__placeholder { color: $s2bs-input-color-placeholder; } } /*------------------------------------*\ #MULTIPLE SELECT2 \*------------------------------------*/ .select2-selection--multiple { min-height: $s2bs-input-height-base; padding: 0; height: auto; .select2-selection__rendered { box-sizing: border-box; display: block; line-height: $s2bs-line-height-base; list-style: none; margin: 0; overflow: hidden; padding: 0; width: 100%; text-overflow: ellipsis; white-space: nowrap; } .select2-selection__placeholder { color: $s2bs-input-color-placeholder; float: left; margin-top: 5px; } /** * Make Multi Select2's choices match Bootstrap 4's default button styles. */ .select2-selection__choice { color: $s2bs-input-color; background: $s2bs-btn-default-bg; border: 1px solid $s2bs-btn-default-border; border-radius: $s2bs-selection-choice-border-radius; cursor: default; float: left; margin: calc(#{$s2bs-padding-base-vertical} - 1px) 0 0 $s2bs-padding-base-horizontal/2; padding: 0 $s2bs-padding-base-vertical; } /** * Minus 2px borders. */ .select2-search--inline { .select2-search__field { background: transparent; padding: 0 $s2bs-padding-base-horizontal; height: $s2bs-input-height-base; line-height: $s2bs-line-height-base; margin: -$border-width 0; // Compensate for input borders included in height min-width: 5em; } } .select2-selection__choice__remove { color: $s2bs-remove-choice-color; cursor: pointer; display: inline-block; font-weight: bold; margin-right: $s2bs-padding-base-vertical / 2; &:hover { color: $s2bs-remove-choice-hover-color; } } /** * Clear the selection. */ .select2-selection__clear { margin-top: $s2bs-padding-base-vertical; } } /** * Address Bootstrap control sizing classes * * 1. Reset Bootstrap defaults. * 2. Adjust the dropdown arrow button icon position. * * @see https://getbootstrap.com/docs/4.0/components/forms/#sizing */ /* 1 */ .select2-selection--single.form-control-sm, .input-group-sm & .select2-selection--single, .form-group-sm & .select2-selection--single { @include border-radius($s2bs-border-radius-small); font-size: $s2bs-font-size-small; height: $s2bs-input-height-small; line-height: $s2bs-line-height-small; padding: $s2bs-padding-small-vertical $s2bs-padding-small-horizontal + $s2bs-caret-width-base*3 $s2bs-padding-small-vertical $s2bs-padding-small-horizontal; /* 2 */ .select2-selection__arrow b { margin-left: -$s2bs-padding-small-vertical; } } .select2-selection--multiple.form-control-sm, .input-group-sm & .select2-selection--multiple, .form-group-sm & .select2-selection--multiple { @include border-radius($s2bs-border-radius-small); min-height: $s2bs-input-height-small; .select2-selection__choice { font-size: $s2bs-font-size-small; line-height: $s2bs-line-height-small; margin: calc(#{$s2bs-padding-small-vertical} - 1px) 0 0 $s2bs-padding-small-horizontal/2; padding: 0 $s2bs-padding-small-vertical; } .select2-search--inline .select2-search__field { padding: 0 $s2bs-padding-small-horizontal; font-size: $s2bs-font-size-small; height: $s2bs-input-height-small; line-height: $s2bs-line-height-small; } .select2-selection__clear { margin-top: $s2bs-padding-small-vertical; } } .select2-selection--single.form-control-lg, .input-group-lg & .select2-selection--single, .form-group-lg & .select2-selection--single { @include border-radius($s2bs-border-radius-large); font-size: $s2bs-font-size-large; height: $s2bs-input-height-large; line-height: $s2bs-line-height-large; padding: $s2bs-padding-large-vertical $s2bs-padding-large-horizontal + $s2bs-caret-width-large*3 $s2bs-padding-large-vertical $s2bs-padding-large-horizontal; /* 1 */ .select2-selection__arrow { width: $s2bs-caret-width-large; b { border-width: $s2bs-caret-width-large $s2bs-caret-width-large 0 $s2bs-caret-width-large; margin-left: -$s2bs-caret-width-large; margin-left: -$s2bs-padding-large-vertical; margin-top: -$s2bs-caret-width-large/2; } } } .select2-selection--multiple.form-control-lg, .input-group-lg & .select2-selection--multiple, .form-group-lg & .select2-selection--multiple { min-height: $s2bs-input-height-large; border-radius: $s2bs-border-radius-large; .select2-selection__choice { font-size: $s2bs-font-size-large; line-height: $s2bs-line-height-large; border-radius: $s2bs-selection-choice-border-radius; margin: calc(#{$s2bs-padding-large-vertical} - 1px) 0 0 $s2bs-padding-large-horizontal/2; padding: 0 $s2bs-padding-large-vertical; } .select2-search--inline .select2-search__field { padding: 0 $s2bs-padding-large-horizontal; font-size: $s2bs-font-size-large; height: $s2bs-input-height-large; line-height: $s2bs-line-height-large; } .select2-selection__clear { margin-top: $s2bs-padding-large-vertical; } } .select2-selection.form-control-lg.select2-container--open { @include dropdown-arrow; } .input-group-lg & .select2-selection { &.select2-container--open { @include dropdown-arrow; } } /*------------------------------------*\ #RTL SUPPORT \*------------------------------------*/ &[dir="rtl"] { /** * Single Select2 * * 1. Makes sure that .select2-selection__placeholder is positioned * correctly. */ .select2-selection--single { padding-left: $s2bs-padding-base-horizontal + $s2bs-caret-width-base*3; padding-right: $s2bs-padding-base-horizontal; .select2-selection__rendered { padding-right: 0; padding-left: 0; text-align: right; /* 1 */ } .select2-selection__clear { float: left; } .select2-selection__arrow { left: $s2bs-padding-base-horizontal; right: auto; b { margin-left: 0; } } } /** * Multiple Select2 */ .select2-selection--multiple { .select2-selection__choice, .select2-selection__placeholder, .select2-search--inline { float: right; } .select2-selection__choice { margin-left: 0; margin-right: $s2bs-padding-base-horizontal/2; } .select2-selection__choice__remove { margin-left: 2px; margin-right: auto; } } } .select2-dropdown[dir="rtl"] { .select2-results__options { text-align: right; } }
}
/————————————\
#ADDITIONAL GOODIES
*————————————*/
/**
* Address Bootstrap's validation states * * If a Select2 widget parent has one of Bootstrap's validation state modifier * classes, adjust Select2's border colors and focus states accordingly. * You may apply said classes to the Select2 dropdown (body > .select2-container) * via JavaScript match Bootstraps' to make its styles match. * * @see https://getbootstrap.com/docs/4.0/components/forms/#validation */
.is-valid {
@include validation-state-focus($s2bs-state-success-text);
}
.is-invalid {
@include validation-state-focus($s2bs-state-danger-text);
}
/* Validation classes on parent element. Preserved Bootstrap 3 validation classes */
.has-warning {
@include validation-state-focus($s2bs-state-warning-text);
}
.has-error {
@include validation-state-focus($s2bs-state-danger-text);
}
.has-success {
@include validation-state-focus($s2bs-state-success-text);
}
/**
* Select2 widgets in Bootstrap Input Groups * * @see https://getbootstrap.com/docs/4.0/components/input-group/ * @see https://github.com/twbs/bootstrap/blob/v4.0.0-beta.2/scss/_input-group.scss */
/**
* Reset rounded corners */
.input-group > .select2-hidden-accessible {
&:first-child + .select2-container--bootstrap > .selection > .select2-selection, &:first-child + .select2-container--bootstrap > .selection > .select2-selection.form-control { @include border-right-radius(0); } &:not(:first-child) + .select2-container--bootstrap:not(:last-child) > .selection > .select2-selection, &:not(:first-child) + .select2-container--bootstrap:not(:last-child) > .selection > .select2-selection.form-control { border-radius: 0; } &:not(:first-child):not(:last-child) + .select2-container--bootstrap:last-child > .selection > .select2-selection, &:not(:first-child):not(:last-child) + .select2-container--bootstrap:last-child > .selection > .select2-selection.form-control { @include border-left-radius(0); }
}
.input-group > .select2-container–bootstrap {
flex: 1 1 auto; position: relative; z-index: 2; width: 1%; margin-bottom: 0; > .selection { display: flex; flex: 1 1 auto; > .select2-selection.form-control { float: none; } } /** * Adjust z-index like Bootstrap does to show the focus-box-shadow * above appended buttons in .input-group and .form-group. */ &.select2-container--open, /* .form-group */ &.select2-container--focus /* .input-group */ { z-index: 3; } /** * Adjust alignment of Bootstrap buttons in Bootstrap Input Groups to address * Multi Select2's height which - depending on how many elements have been selected - * may grow taller than its initial size. * * @see https://github.com/twbs/bootstrap/blob/v4.0.0-beta.2/scss/_input-group.scss */ &, .input-group-append, .input-group-prepend, .input-group-append .btn, .input-group-prepend .btn { vertical-align: top; }
}
/**
* Temporary fix for https://github.com/select2/select2-bootstrap-theme/issues/9 * * Provides `!important` for certain properties of the class applied to the * original `<select>` element to hide it. * * @see https://github.com/select2/select2/pull/3301 * @see https://github.com/fk/select2/commit/31830c7b32cb3d8e1b12d5b434dee40a6e753ada */
.form-control.select2-hidden-accessible {
position: absolute !important; width: 1px !important;
}
/**
* Display override for inline forms */
.form-inline .select2-container–bootstrap {
@include media-breakpoint-up(sm) { display: inline-block; }
}