<template>
  <scroll-view style="flex:1" type="nested" direction="vertical">
    <nested-scroll-header>
      <view class="scroll-header-tiem1">
        <text>会渲染的nested-scroll-header</text>
      </view>
      <!-- dom2 nested-scroll-header 没有限制节点数量 临时注释 -->
      <!-- <view class="scroll-header-tiem1">
        <text>不会渲染nested-scroll-header，因为 nested-scroll-header 只会渲染第一个子节点</text>
      </view> -->
    </nested-scroll-header>
    <nested-scroll-header>
      <swiper ref="headerRef" indicator-dots="true" circular="true">
        <swiper-item v-for="i in num" :item-id="i">
          <view class="scroll-header-tiem2">
            <text>如果存在多个头部节点，那么就使用多个 nested-scroll-header 来将其包裹</text>
          </view>
        </swiper-item>
      </swiper>
    </nested-scroll-header>
    <nested-scroll-body>
      <scroll-view style="flex:1" associative-container="nested-scroll-view">
        <view v-for="key in scrollData">
          <view class="scroll-item">
            <text class="scroll-item-title">{{key}}</text>
          </view>
        </view>
      </scroll-view>
    </nested-scroll-body>
  </scroll-view>
</template>

<script setup lang="uts">
  const scrollData = ref([] as Array<string>)
  const num = ref(0)
  const headerRef = ref<UniSwiperElement | null>(null)

  onLoad(() => {
    let lists : Array<string> = []
    for (let i = 0; i < 30; i++) {
      lists.push("item---" + i)
    }
    scrollData.value = lists
  })

  onReady(() => {
    num.value = 3
  })

</script>

<style>
  .scroll-item {
    margin-left: 6px;
    margin-right: 6px;
    margin-top: 6px;
    background-color: #fff;
    border-radius: 4px;
  }

  .scroll-item-title {
    width: 100%;
    height: 60px;
    line-height: 60px;
    text-align: center;
    color: #555;
  }

  .scroll-header-tiem1 {
    height: 200px;
    background-color: #66ccff;
    align-items: center;
    justify-content: center;
  }

  .scroll-header-tiem2 {
    height: 100px;
    background-color: #89ff8d;
    align-items: center;
    justify-content: center;
  }
</style>