<template>
  <view class="u-time-axis-item">
    <slot name="content" />
    <view class="u-time-axis-node" :style="[nodeStyle]">
      <slot name="node"><view class="u-dot"></view></slot>
    </view>
  </view>
</template>

<script>
  /**
   * timeLineItem 时间轴Item
   * @description 时间轴组件一般用于物流信息展示，各种跟时间相关的记录等场景。(搭配u-time-line使用)
   * @tutorial https://www.uviewui.com/components/timeLine.html
   * @property {String} bg-color 左边节点的背景颜色，一般通过slot内容自定义背景颜色即可（默认#ffffff）
   * @property {String Number} node-top 节点左边图标绝对定位的top值，单位rpx
   * @example <u-time-line-item node-top="2">...</u-time-line-item>
   */
  export default {
    name: 'u-time-line-item',
    props: {
      // 节点的背景颜色
      bgColor: {
        type: String,
        default: '#ffffff',
      },
      // 节点左边图标绝对定位的top值
      nodeTop: {
        type: [String, Number],
        default: '',
      },
    },
    data() {
      return {};
    },
    computed: {
      nodeStyle() {
        let style = {
          backgroundColor: this.bgColor,
        };
        if (this.nodeTop != '') style.top = this.nodeTop + 'rpx';
        return style;
      },
    },
  };
</script>

<style lang="scss" scoped>
  .u-time-axis-item {
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
    margin-bottom: 32rpx;
  }

  .u-time-axis-node {
    position: absolute;
    top: 12rpx;
    left: -40rpx;
    transform-origin: 0;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    font-size: 24rpx;
  }

  .u-dot {
    height: 16rpx;
    width: 16rpx;
    border-radius: 100rpx;
    background: #ddd;
  }
</style>