naive-ui/styles/Cascader.scss

@import './mixins/mixins.scss';

@mixin cascader-size-mixin ($size) {
  @include b(cascader-menu) {
    @include m($size + '-size') {
      @include b(cascader-submenu) {
        height: map-get($--n-height, $size) * 6.6;
        @include b(cascader-option) {
          height: map-get($--n-height, $size);
          line-height: map-get($--n-height, $size);
          font-size: map-get($--n-font-size, $size);
        }
      }
    }
  }
}

@include cascader-size-mixin('small');
@include cascader-size-mixin('medium');
@include cascader-size-mixin('large');
@include b(cascader) {
  width: 100%;    
}

@include themes-mixin {
  @include b(cascader-menu) {
    @include once {
      @include fade-in-scale-up-transition(cascader-menu, inherit, .2s);
      transform: $--n-transform-debounce-scale;
      position: relative;
      margin: 4px 0;
      display: flex;
      flex-wrap: nowrap;
      border-radius: $--n-cascader-border-radius;
      overflow: hidden;
      /** 
       * if width not set, cascader select menu's inner scroll area's width is 
       * not correct, which won't change after select menu width is set
       */
      @include b(scrollbar) {
        width: 100%;
      }
    }
    box-shadow: $--cascader-menu-box-shadow;
    @include b(cascader-submenu) {
      @include once {
        position: relative;
        overflow: hidden;
        min-width: 182px;
        @include b(scrollbar-content) {
          position: relative;
        }
        &:first-child {
          border-top-left-radius: $--n-cascader-border-radius;
          border-bottom-left-radius: $--n-cascader-border-radius;
        }
        &:last-child {
          border-top-right-radius: $--n-cascader-border-radius;
          border-bottom-right-radius: $--n-cascader-border-radius;
        }
      }
      &:not(:first-child) {
        border-left: 1px solid $--cascader-menu-border-color;
      }
      background-color: $--cascader-menu-background-color;
    }
    @include b(cascader-option) {
      @include once {
        box-sizing: border-box;
        min-width: 182px;
        background-color: transparent;
        transition:
          background-color .2s $--n-ease-in-out-cubic-bezier,
          color 0.2s $--n-ease-in-out-cubic-bezier;
        display: flex;
        padding: 0px 24px 0 33px;
        white-space: nowrap;
        position: relative;
        cursor: pointer;
      }
      color: map-get($--cascader-option-text-color, 'default');
      @include not-m(not-leaf) {
        &::after {
          @include once {
            content: '';
            height: 6px;
            width: 3px;
            position: absolute;
            right: 14px;
            transform: rotate(45deg) scale(.5);
            top: calc(50% - 4px);
            opacity: 0;
            transition: transform .3s $--n-ease-in-out-cubic-bezier, opacity .3s $--n-ease-in-out-cubic-bezier;
          }
          border-right: 1px solid $--cascader-item-check-mark-color;
          border-bottom: 1px solid $--cascader-item-check-mark-color;
        }
      }
      @include once {
        @include m(single-type) {
          padding: 0px 24px 0 18px;
        }
        @include e(checkbox) {
          position: absolute;
          top: 50%;
          transform: translateY(-50%);
          left: 10px;
          display: block;
        }
        @include e(radio) {
          position: absolute;
          top: 50%;
          transform: translateY(-50%);
          left: 10px;
          display: block;
        }
        @include e(loading) {
          @include fade-in-scale-up-transition(
            cascader-option-loading,
            $original-transform: translateY(-50%)
          );
          position: absolute;
          width: 14px;
          height: 14px;
          right: 10px;
          top: 50%;
          transform: translateY(-50%);
          display: block;
        }
      }
      @include m(selected) {
        color: map-get($--cascader-option-text-color, 'active');
        @include once {
          &::after {
            transform: rotate(45deg) scale(1);
            opacity: 1;
          }
        }
      }
      @include m(active) {
        color: map-get($--cascader-option-text-color, 'active');
      }
      @include m(disabled) {
        color: map-get($--cascader-option-text-color, 'disabled');
        @include once {
          cursor: not-allowed;
        }
      }
      @include m(tracked) {
        background-color: $--cascader-menu-tracking-rect-background-color;
      }
      @include m(not-leaf) {
        &::after {
          @include once {
            content: '';
            position: absolute;
            width: 5px;
            height: 5px;
            transform: rotate(45deg) translateY(-50%);
            right: 18px;
            top: 50%;
            opacity: 1;
            transition: opacity .3s $--n-ease-in-out-cubic-bezier;
          }
          border-top: 2px solid $--cascader-option-arrow-background-color;
          border-right: 2px solid $--cascader-option-arrow-background-color;
        }
      }
      @include once {
        @include m(loading) {
          @include m(not-leaf) {
            &::after {
              opacity: 0;
            }
          }
        }
      }
    }
    @include b(base-tracking-rect) {
      @include e(body) {
        background-color: $--cascader-menu-tracking-rect-background-color !important;
      }
    }
  }
}