ten-design-vue/lib/theme/components/tree.less

ten-vue

/* dependencies icon,checkbox */
@import "../vars.less";

.ten-tree {
  background: #fff;
  .ten-tree-node {
    &__content {
      display: flex;
      position: relative;
      align-items: center;
      line-height: 40px;
      padding-left: 28px;
      background: #fff;
      cursor: pointer;
      &:hover, &--selected:not([class*='showcheckbox']):not([class*='parentselected']) {
        background: @primary-color-ligher-7;
      }
      &--disabled {
        color: @disabled-color;
      }

      &::after {
        content: '';
        display: none;
        position: absolute;
        left: 0;
        width: 100%;
        height: 4px;
        background: @primary-color-ligher-6;
      }

      // drag
      &--dragpos {
        &-center {
          background-color: @primary-color-ligher-6;
        }
        &-top {
          &::after {
            display: block;
            top: -2px;
          }
        }
        &-bottom {
          &::after {
            display: block;
            bottom: -2px;
          }
        }
      }
    }

    &__content--disabled .ten-tree-node__expand {
      color: @disabled-color;
    }

    &__expand {
      position: absolute;
      top: 8px;
      left: 0;
      display: inline-block;
      width: 24px;
      height: 24px;
      color: @text-color-lighter-2;
      i {
        position: relative;
        top: 5px;
        left: 5px;
        display: block;
        width: 14px;
        height: 14px;
        font-size: 14px;
      }

      .ten-icon--carret_right {
        transition: transform 0.2s;
      }
      &--expanded .ten-icon--carret_right {
        transform: rotate(90deg);
      }
      &--children {
        cursor: pointer;
      }
    }
    
    &__checkbox {
      margin-right: 8px;
    }

    &__children {
      padding-left: 24px + 6px;
    }
  }
}

.ten-tree--uninitialized * {
  transition: none!important;
}

.ten-treeselect {
  background: #fff;
  max-height: 400px;
  overflow-y: auto;
}