<template>
  <list-view v-if="list_show" id="listview" style="flex: 1;" show-scrollbar=false :refresher-enabled="true"
    :refresher-triggered="refresherTriggered" @refresherrefresh="onRefresherrefresh" @refresherabort="onRefresherabort"
    @refresherrestore="onRefresherrestore" @refresherpulling="onRefresherpulling">
    <list-item class="item">
      <text>向下滑动触发下拉刷新</text>
    </list-item>
    <list-item v-for="index in item_count" class="item">
      <text>item-------{{index}}</text>
    </list-item>
  </list-view>
</template>

<script>
  type RefresherEventTest = {
    type : string;
    target : UniElement | null;
    currentTarget : UniElement | null;
    dy : number;
  }
  export default {
    data() {
      return {
        item_count: 20,
        list_show: false,
        refresherTriggered: true,
        // 自动化测试使用
        refresherrefreshTest: "",
        onRefresherabortTest: "",
        onRefresherrestoreTest: "",
        onRefresherpullingTest: ""
      }
    },
    onLoad() {
      //延迟显示list-view
      setTimeout(() => {
        this.list_show = true;
      }, 500)
    },
    methods: {
      onRefresherrefresh(e : UniRefresherEvent) {
        console.log('refresherrefresh-----下拉刷新被触发', e.detail.dy);
        this.refresherTriggered = true;
        this.checkEventTest({
          type: e.type,
          target: e.target,
          currentTarget: e.currentTarget,
          dy: e.detail.dy,
        } as RefresherEventTest, 'refresherrefresh')
        setTimeout(() => {
          this.refresherTriggered = false;
        }, 1000)
      },
      onRefresherabort(e : UniRefresherEvent) {
        console.log("onRefresherabort------下拉刷新被中止", e.detail)
        this.checkEventTest({
          type: e.type,
          target: e.target,
          currentTarget: e.currentTarget,
          dy: e.detail.dy,
        } as RefresherEventTest, 'refresherabort')
      },
      onRefresherrestore(e : UniRefresherEvent) {
        console.log("onRefresherrestore------下拉刷新被复位", e.detail.dy)
        this.checkEventTest({
          type: e.type,
          target: e.target,
          currentTarget: e.currentTarget,
          dy: e.detail.dy,
        } as RefresherEventTest, 'refresherrestore')
      },
      onRefresherpulling(e : UniRefresherEvent) {
        console.log("onRefresherpulling------拉刷新控件被下拉-dy=" + e.detail.dy)
        this.checkEventTest({
          type: e.type,
          target: e.target,
          currentTarget: e.currentTarget,
          dy: e.detail.dy,
        } as RefresherEventTest, 'refresherpulling')
      },
      // 自动化测试专用（由于事件event参数对象中存在循环引用，在ios端JSON.stringify报错，自动化测试无法page.data获取）
      checkEventTest(e : RefresherEventTest, eventName : String) {
        const isPass = e.type === eventName && e.target instanceof UniElement && e.currentTarget instanceof UniElement && e.dy > 0;
        const result = isPass ? `${eventName}:Success` : `${eventName}:Fail`;
        switch (eventName) {
          case 'refresherrefresh':
            this.refresherrefreshTest = result
            break;
          case 'refresherpulling':
            this.onRefresherpullingTest = result
            break;
          case 'refresherrestore':
            this.onRefresherrestoreTest = result
            break;
          case 'refresherabort':
            this.onRefresherabortTest = result
            break;
          default:
            break;
        }
      }
    }
  }
</script>
<style>
  .item {
    padding: 15px;
    margin: 0 0 5px 0;
    background-color: #fff;
    border-radius: 5px;
  }

  .button_item {
    width: 200px;
  }
</style>