//-----------------------------
// List Box
//-----------------------------

@import '../../globals/scss/colors';
@import '../../globals/scss/css--helpers';
@import '../../globals/scss/layout';
@import '../../globals/scss/import-once';
@import '../../globals/scss/vars';

$list-box-width: 100%;
$list-box-height: rem(40px);
$list-box-inline-height: rem(32px);
$list-box-menu-width: rem(300px);

@include exports('list-box') {
  // The overall container element for a `list-box`. Has two variants,
  // `disabled` and `inline`.
  .#{$prefix}--list-box {
    position: relative;
    width: $list-box-width;
    height: $list-box-height;
    max-height: $list-box-height;
    background-color: rgba($field-01, 0.1);
  }

  // Disabled state for a `list-box`
  .#{$prefix}--list-box--disabled {
    opacity: 0.5;
  }

  .#{$prefix}--list-box--disabled,
  .#{$prefix}--list-box--disabled .#{$prefix}--list-box__field,
  .#{$prefix}--list-box--disabled .#{$prefix}--list-box__menu-icon {
    cursor: not-allowed;
  }

  // Inline variant for a `list-box`
  .#{$prefix}--list-box--inline {
    background-color: inherit;
    width: auto;
    height: $list-box-inline-height;
  }

  .#{$prefix}--list-box--inline .#{$prefix}--list-box__label {
    color: $brand-01;
  }

  .#{$prefix}--list-box--inline .#{$prefix}--list-box__field {
    padding: 0 0 0 rem(10px);
  }

  .#{$prefix}--list-box--inline .#{$prefix}--list-box__menu-icon {
    position: static;
    padding: 0 rem(10px) 0 rem(12px);
  }

  .#{$prefix}--list-box--inline > .#{$prefix}--list-box__menu {
    top: $list-box-inline-height;
    width: $list-box-menu-width;
  }

  .#{$prefix}--list-box--inline > .#{$prefix}--list-box__field[aria-expanded='true'] ~ .#{$prefix}--list-box__menu {
    outline: 1px solid $brand-01;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.1);
  }

  .#{$prefix}--list-box--inline > .#{$prefix}--list-box__field[aria-expanded='true'] {
    outline: none;
  }

  // The field we use for input, showing selection, etc.
  .#{$prefix}--list-box__field {
    @include button-reset;
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
    padding: 0 1rem;
    cursor: pointer;
  }

  .#{$prefix}--list-box__field:hover {
    background: $field-01;
  }

  .#{$prefix}--list-box__field:focus,
  .#{$prefix}--list-box__field[aria-expanded='true'] {
    outline: 1px solid $brand-01;
  }

  .#{$prefix}--list-box__field[disabled] {
    outline: none;
  }

  .#{$prefix}--list-box__field[aria-expanded='true'] ~ .#{$prefix}--list-box__menu {
    box-shadow: 0 1px 0 0 $brand-01, 1px 0 0 0 $brand-01, -1px 0 0 0 $brand-01, 0 4px 8px 0 rgba(0, 0, 0, 0.1);
  }

  // Label for a `list-box__field`
  .#{$prefix}--list-box__label {
    @include typescale('zeta');

    color: $text-01;
    font-weight: 600;
    user-select: none;
  }

  // Menu status inside of a `list-box__field`
  .#{$prefix}--list-box__menu-icon {
    display: inline-block;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    height: 100%;
    padding: 0 1rem;
    transition: transform 200ms $carbon--standard-easing;
    cursor: pointer;
  }

  .#{$prefix}--list-box__menu-icon > svg {
    fill: $brand-01;
    height: 100%;
  }

  .#{$prefix}--list-box__menu-icon--open {
    transform: rotate(180deg);
  }

  // Selection indicator for a `list-box__field`
  .#{$prefix}--list-box__selection {
    display: inline-block;
    position: absolute;
    top: 0;
    right: rem(26px);
    bottom: 0;
    height: rem(40px);
    padding: 0 1rem;
    cursor: pointer;
    user-select: none;
    transition: background-color 200ms $carbon--standard-easing;
  }

  .#{$prefix}--list-box__selection > svg {
    fill: $ui-05;
    height: 100%;
  }

  .#{$prefix}--list-box__selection:focus {
    outline: 1px solid $brand-01;
  }

  // Modifier for a selection to show that multiple selections have been made
  .#{$prefix}--list-box__selection--multi {
    @include typescale('omega');

    position: static;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    background-color: $brand-01;
    height: rem(18px);
    color: white;
    line-height: 0;
    padding: rem(5px);
    margin-right: rem(10px);
    border-radius: rem(13px);
  }

  .#{$prefix}--list-box__selection--multi > svg {
    fill: white;
    width: 0.5rem;
    height: 0.5rem;
    margin-left: rem(5px);
  }

  .#{$prefix}--list-box__selection--multi:focus,
  .#{$prefix}--list-box__selection--multi:hover {
    background-color: $brand-02;
    outline: none;
  }

  // Descendant of a `list-box` that displays a list of options to select
  .#{$prefix}--list-box__menu {
    @include box-shadow();

    position: absolute;
    left: 0;
    right: 0;
    top: $list-box-height;
    width: $list-box-width;
    background-color: $ui-01;
    max-height: rem(120px);
    overflow-y: auto;
    z-index: z('dropdown');
  }

  // Descendant of a `list-box__menu` that represents a selection for a control
  .#{$prefix}--list-box__menu-item {
    @include typescale('zeta');

    display: flex;
    align-items: center;
    height: rem(40px);
    padding: 0 1rem;
    cursor: pointer;
    user-select: none;
  }

  .#{$prefix}--list-box__menu-item:hover,
  .#{$prefix}--list-box__menu-item--highlighted {
    background-color: rgba($field-01, 0.1);
    color: $text-01;
  }

  // Tweaks for descendants

  // In multi-select scenarios, we need to target checkbox inputs
  .#{$prefix}--list-box__menu-item > .#{$prefix}--form-item.#{$prefix}--checkbox-wrapper {
    margin: 0;
  }

  // When handling input, we need to target nodes that specifically opt-in to
  // the `combobox` role in order to make sure the text input is styled
  // correctly.
  .#{$prefix}--list-box input[role='combobox'] {
    background-color: inherit;
    font-weight: 600;
    outline-offset: 0;
  }

  .#{$prefix}--list-box input[role='combobox']::placeholder {
    font-weight: 400;
  }

  .#{$prefix}--list-box--disabled input[role='combobox'] {
    opacity: 1;
  }
}