@import "mixins/mixins";
@import "common/var";
@import "common/transition";
@import "checkbox";

@include b(tree) {
  position: relative;
  cursor: default;
  background: $--tree-bg-color;
  color: $--tree-font-color;
  background: $--tag-default-bg;
  overflow: hidden;

  @include e(empty-block) {
    position: relative;
    min-height: 60px;
    text-align: center;
    width: 100%;
    height: 100%;
  }

  @include e(empty-text) {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: $--tree-font-color-disabled;
  }

  @include e(drop-indicator) {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background-color: $--tree-drop-bg-color;
  }
}

@include b(tree-node) {
  white-space: nowrap;
  outline: none;
  &:focus {
    /* focus */
    > .el-tree-node__content {
      color: $--tree-font-color-active;
    }
  }

  @include when(drop-inner) {
    > .el-tree-node__content .el-tree-node__label {
      background-color: $--tree-drop-bg-color;
      color: $--tree-drop-font-color;
    }
  }

  @include e(content) {
    display: flex;
    align-items: center;
    height: 23px;
    position: relative;

    .el-icon-caret-right:before {
      color: $--tree-icon-color;
    }
    & > .el-tree-node__expand-icon {
      padding: 5px 3px;
    }
    & > .el-checkbox {
      margin-right: 5px;
      margin-left: 0;
    }
    & > .is-disabled:before {
      color: $--tree-icon-color-disabled;
    }
    .el-tree-node__expand-icon.is-leaf {
      color: transparent;
      &.el-icon-caret-right::before {
        opacity: 0;
      }
    }
    &.is-pane .el-tree-node__expand-icon.is-leaf {
      margin-left: 0;
    }
    &:hover {
      .el-tree-node__expand-icon:before {
        color: $--tree-icon-color-active;
      }
      .el-icon-caret-right:not(.is-leaf) {
        &:before {
          color: $--tree-icon-color-active;
        }
        &.is-disabled:before {
          color: $--tree-icon-color-disabled;
        }
      }
      .el-tree-node__label {
        color: $--tree-font-color-hover;
      }
      &.is-pane .el-tree-node__expand-icon:not(.is-leaf):before {
        border-color: $--tree-pane-border-color-hover;
      }
    }

    .el-tree.is-dragging & {
      cursor: move;

      & * {
        pointer-events: none;
      }
    }

    .el-tree.is-dragging.is-drop-not-allow & {
      cursor: not-allowed;
    }
    @include when(pane) {
      .el-tree-node__expand-icon:not(.is-leaf) {
        transform: rotate(0deg);
        padding: 0;

        &:before {
          border: $--tree-pane-border;
          background-color: $--tree-pane-bg-color;
          content: "\e755";
          font-size: $--tree-font-size;
          width: 24px;
          height: 24px;
          display: inline-block;
          border-radius: 2px;
          color: $--tree-pane-icon-color;
          text-align: center;
          transform: scale(0.5);
          font-weight: bold;
          line-height: 24px;
        }
        &.expanded:before {
          content: "\e7c4";
        }
        &.is-disabled {
          &::before {
            color: $--tree-pane-border-color-disabled;
            border-color: $--tree-pane-border-color-disabled;
          }
        }
      }
      &:hover {
        color: $--tree-font-color-hover;
      }
    }
    @include when(disabled) {
      .el-tree-node__label {
        color: $--tree-font-color-disabled;
        &:hover {
          color: $--tree-font-color-disabled;
          cursor: no-drop;
        }
      }
    }
  }

  @include e(expand-line) {
    position: absolute;
    height: 1px;
    width: 11px;
    background-color: $--tree-pane-border-color;
    transform: translateX(-4px);
  }

  @include e(expand-icon) {
    cursor: pointer;
    color: $--tree-pane-icon-color;
    font-size: $--tree-icon-size;
    transform: rotate(0deg) scale(0.5);
    transition: transform 0.3s ease-in-out;

    &.expanded {
      transform: rotate(90deg) scale(0.5);
    }

    &.is-leaf {
      color: transparent;
      cursor: default;
      & + .el-tree-node__expand-line {
        width: 19px;
      }
    }
    @include when(disabled) {
      &:hover {
        cursor: no-drop;
      }
      & + .el-tree-node__label {
        color: $--tree-font-color-disabled;
        &:hover {
          color: $--tree-font-color-disabled;
          cursor: no-drop;
        }
      }
    }
  }

  @include e(label) {
    font-size: $--font-size-base;
    color: $--tree-font-color;
    &:hover {
      color: $--tree-font-color-hover;
      cursor: pointer;
    }
    &:active {
      color: $--tree-font-color-active;
    }
  }

  @include e(loading-icon) {
    margin-right: 8px;
    font-size: $--font-size-base;
    color: $--tree-pane-icon-color;
  }

  & > .el-tree-node__children {
    overflow: hidden;
    background-color: transparent;
  }

  &.is-expanded > .el-tree-node__children {
    display: block;
  }
  @include e(line) {
    position: absolute;
    width: 1px;
    height: 23px;
    background-color: $--tree-pane-border-color;
    left: 31px;
    top: 18px;
    transition: height 0.3s ease-in-out;
  }
}

.el-tree--highlight-current .el-tree-node.is-current > .el-tree-node__content {
  background-color: $--tree-bg-color-highlight;
}
@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {
  // 兼容IE
  .el-tree-node__expand-line {
    margin-left: -28px;
  }
}