<template>
  <!-- #ifdef APP -->
  <scroll-view class="page-scroll-view" style="padding-bottom: var(--uni-safe-area-inset-bottom);">
  <!-- #endif -->
    <view class="page uni-list-cell-db-text" id="page">
      <page-head :title="data.title"></page-head>
      <page-intro content="本页演示 uni.createSelectorQuery：通过 select/selectAll 与 boundingClientRect 获取节点布局信息（left、top、right、bottom、width、height）；含 view、text、image、scroll-view 及子组件多根节点等查询示例，可测试 .fields/.node 结果；底部可跳转「滚动容器中的 createSelectorQuery」子页。"></page-intro>
      <button class="btn btn-get-node-info" @click="getNodeInfo">getNodeInfo</button>
      <button class="btn btn-get-all-node-info" @click="getAllNodeInfo">getAllNodeInfo</button>
      <view id="rect-1-2" class="rect-1-2">
        <view class="rect rect1"></view>
        <view class="rect rect2"></view>
      </view>
      <view class="rect-info-1-2">
        <view class="rect-info" v-for="(nodeInfo, index) in data.nodeInfoList" :key="index">
          <view class="node-info-item">
            <text class="node-info-item-k">left: </text>
            <text class="node-info-item-v">{{nodeInfo.left}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">top: </text>
            <text class="node-info-item-v">{{nodeInfo.top}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">right: </text>
            <text class="node-info-item-v">{{nodeInfo.right}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">bottom: </text>
            <text class="node-info-item-v">{{nodeInfo.bottom}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">width: </text>
            <text class="node-info-item-v">{{nodeInfo.width}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">height: </text>
            <text class="node-info-item-v">{{nodeInfo.height}}</text>
          </view>
        </view>
      </view>
      <node-child class="node-child"></node-child>
      <text>子组件多根节点</text>
      <multi-child ref="multiChildRef" id="multi-child"></multi-child>
      <text>子组件多根节点(仅测试，用于验证查询是否超出范围)</text>
      <multi-child id="multi-child-2"></multi-child>
      <view>
        <text>测试.fields</text>
        <text>{{data.fieldsResultContainNode}}</text>
      </view>
      <view>
        <text>测试.node</text>
        <text>{{data.nodeResultContainNode}}</text>
      </view>
      <canvas id="canvas1"></canvas>

      <!-- text 组件 -->
      <view class="uni-common-mt">
        <text class="uni-title-text">Text 组件查询示例</text>
        <text id="test-text" class="test-text">这是一个测试文本元素</text>
        <button class="btn" @click="getTextNodeInfo">查询 Text 节点信息</button>
        <view v-if="data.textNodeInfo" class="rect-info">
          <view class="node-info-item">
            <text class="node-info-item-k">left: </text>
            <text class="node-info-item-v">{{data.textNodeInfo!.left}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">right: </text>
            <text class="node-info-item-v">{{data.textNodeInfo!.right}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">top: </text>
            <text class="node-info-item-v">{{data.textNodeInfo!.top}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">bottom: </text>
            <text class="node-info-item-v">{{data.textNodeInfo!.bottom}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">width: </text>
            <text class="node-info-item-v">{{data.textNodeInfo!.width}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">height: </text>
            <text class="node-info-item-v">{{data.textNodeInfo!.height}}</text>
          </view>
        </view>
      </view>

      <!-- image 组件 -->
      <view class="uni-common-mt">
        <text class="uni-title-text">Image 组件查询示例</text>
        <image id="test-image" class="test-image" src="/static/test-image/logo.png" mode="aspectFit"></image>
        <button class="btn" @click="getImageNodeInfo">查询 Image 节点信息</button>
        <view v-if="data.imageNodeInfo" class="rect-info">
          <view class="node-info-item">
            <text class="node-info-item-k">left: </text>
            <text class="node-info-item-v">{{data.imageNodeInfo!.left}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">right: </text>
            <text class="node-info-item-v">{{data.imageNodeInfo!.right}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">top: </text>
            <text class="node-info-item-v">{{data.imageNodeInfo!.top}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">bottom: </text>
            <text class="node-info-item-v">{{data.imageNodeInfo!.bottom}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">width: </text>
            <text class="node-info-item-v">{{data.imageNodeInfo!.width}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">height: </text>
            <text class="node-info-item-v">{{data.imageNodeInfo!.height}}</text>
          </view>
        </view>
      </view>

      <!-- scroll-view 组件 -->
      <view class="uni-common-mt">
        <text class="uni-title-text">Scroll-view 组件查询示例</text>
        <scroll-view id="test-scroll-view" class="test-scroll-view">
          <view style="padding: 10px;">
            <text v-for="i in 10" :key="i">Scroll-view 第 {{i}} 行</text>
          </view>
        </scroll-view>
        <button class="btn" @click="getScrollViewNodeInfo">查询 Scroll-view 节点信息</button>
        <view v-if="data.scrollViewNodeInfo" class="rect-info">
          <view class="node-info-item">
            <text class="node-info-item-k">left: </text>
            <text class="node-info-item-v">{{data.scrollViewNodeInfo!.left}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">right: </text>
            <text class="node-info-item-v">{{data.scrollViewNodeInfo!.right}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">top: </text>
            <text class="node-info-item-v">{{data.scrollViewNodeInfo!.top}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">bottom: </text>
            <text class="node-info-item-v">{{data.scrollViewNodeInfo!.bottom}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">width: </text>
            <text class="node-info-item-v">{{data.scrollViewNodeInfo!.width}}</text>
          </view>
          <view class="node-info-item">
            <text class="node-info-item-k">height: </text>
            <text class="node-info-item-v">{{data.scrollViewNodeInfo!.height}}</text>
          </view>
        </view>
      </view>
    </view>
    <navigator url="/pages/API/create-selector-query/create-selector-query-onScroll"><button>滚动容器中的createSelectorQuery</button></navigator>
  <!-- #ifdef APP -->
  </scroll-view>
  <!-- #endif -->
</template>

<script setup lang="uts">
  import nodeChild from './nodes-info-child.uvue'
  import multiChild from './selector-query-child-multi.uvue'

  type NodeInfoType = {
    left : number | null,
    top : number | null,
    right : number | null,
    bottom : number | null,
    width : number | null,
    height : number | null,
  }

  type DataType = {
    title: string;
    nodeInfoList: NodeInfoType[];
    rootNodeInfo: NodeInfoType | null;
    selectCount: number;
    selectAllCount: number;
    fieldsResultContainNode: boolean;
    nodeResultContainNode: boolean;
    textNodeInfo: NodeInfoType | null;
    imageNodeInfo: NodeInfoType | null;
    scrollViewNodeInfo: NodeInfoType | null;
  }
  // 使用reactive避免ref数据在自动化测试中无法访问
  const data = reactive({
    title: 'createSelectorQuery',
    nodeInfoList: [],
    // 仅用于自动化测试
    rootNodeInfo: null,
    //供自动化测试使用
    // resizeRectValid: false
    // TODO
    selectCount: 0,
    selectAllCount: 0,
    fieldsResultContainNode: false,
    nodeResultContainNode: false,
    textNodeInfo: null,
    imageNodeInfo: null,
    scrollViewNodeInfo: null
  } as DataType)

  const multiChildRef = ref<ComponentPublicInstance | null>(null)

  // 仅用于自动化测试
  const onChildReady = (count: number, allCount: number) => {
    // 通过事件传递数据，子组件在ready时通过事件发送数据
    data.selectCount = count
    data.selectAllCount = allCount
  }

  // 仅用于自动化测试
  const getRootNodeInfo = (selector: string) => {
    uni.createSelectorQuery().select(selector).boundingClientRect().exec((ret) => {
      if (ret.length == 1) {
        const nodeInfo = ret[0] as NodeInfo;
        const nodeType = {
          left: nodeInfo.left,
          top: nodeInfo.top,
          right: nodeInfo.right,
          bottom: nodeInfo.bottom,
          width: nodeInfo.width,
          height: nodeInfo.height,
        } as NodeInfoType;
        data.rootNodeInfo = nodeType
      }
    })
  }

  const getNodeInfo = () => {
    uni.createSelectorQuery().select('.rect1').boundingClientRect().exec((ret) => {
      data.nodeInfoList.length = 0
      const i = ret[0] as NodeInfo
      data.nodeInfoList.push({
        left: i.left,
        top: i.top,
        right: i.right,
        bottom: i.bottom,
        width: i.width,
        height: i.height,
      } as NodeInfoType)
    })
  }

  const getAllNodeInfo = () => {
    uni.createSelectorQuery().selectAll('.rect').boundingClientRect().exec((ret) => {
      data.nodeInfoList.length = 0
      const array = ret[0] as NodeInfo[]
      array.forEach((i) => {
        data.nodeInfoList.push({
          left: i.left,
          top: i.top,
          right: i.right,
          bottom: i.bottom,
          width: i.width,
          height: i.height,
        } as NodeInfoType)
      })
    })
  }

  // test .fields
  const testFields = () => {
    uni.createSelectorQuery().select('.rect1').fields({
      node: true
    } as NodeField, (ret) => {
      const isElement = (ret as NodeInfo).node instanceof UniElement
      if (isElement) {
        data.fieldsResultContainNode = true
      } else {
        data.fieldsResultContainNode = false
      }
    }).exec()
  }

  // test .node
  const testNode = () => {
    uni.createSelectorQuery().select('#canvas1').node((ret) => {
      const isElement = (ret as NodeInfo).node instanceof UniElement
      const isCanvasElement = ((ret as NodeInfo).node as UniCanvasElement).tagName == 'CANVAS'
      if (isElement && isCanvasElement) {
        data.nodeResultContainNode = true
      } else {
        data.nodeResultContainNode = false
      }
    }).exec()
  }

  // 查询 text 节点信息
  const getTextNodeInfo = () => {
    uni.createSelectorQuery().select('#test-text').boundingClientRect().exec((ret) => {
      if (ret.length > 0) {
        const i = ret[0] as NodeInfo
        data.textNodeInfo = {
          left: i.left,
          top: i.top,
          right: i.right,
          bottom: i.bottom,
          width: i.width,
          height: i.height,
        } as NodeInfoType
      }
    })
  }

  // 查询 image 节点信息
  const getImageNodeInfo = () => {
    uni.createSelectorQuery().select('#test-image').boundingClientRect().exec((ret) => {
      if (ret.length > 0) {
        const i = ret[0] as NodeInfo
        data.imageNodeInfo = {
          left: i.left,
          top: i.top,
          right: i.right,
          bottom: i.bottom,
          width: i.width,
          height: i.height,
        } as NodeInfoType
      }
    })
  }

  // 查询 scroll-view 节点信息
  const getScrollViewNodeInfo = () => {
    uni.createSelectorQuery().select('#test-scroll-view').boundingClientRect().exec((ret) => {
      if (ret.length > 0) {
        const i = ret[0] as NodeInfo
        data.scrollViewNodeInfo = {
          left: i.left,
          top: i.top,
          right: i.right,
          bottom: i.bottom,
          width: i.width,
          height: i.height,
        } as NodeInfoType
      }
    })
  }

  onLoad(() => {
    uni.$on('childDataReady', onChildReady)
  })

  onUnload(() => {
    uni.$off('childDataReady', onChildReady)
  })

  onReady(() => {
    testFields()
    testNode()
  })

  onResize(() => {
    //供自动化测试使用
    /* var rect12Element = uni.getElementById("rect-1-2")
    if(rect12Element != null) {
      var domRect = rect12Element.getBoundingClientRect()
      if(domRect.width > 100) {
        data.resizeRectValid = true
      }
    } */
  })

  defineExpose({
    data,
    getRootNodeInfo,
    getTextNodeInfo,
    getImageNodeInfo,
    getScrollViewNodeInfo
  })
</script>

<style>
  .page {
    padding: 15px;
  }

  .btn {
    margin-top: 15px;
  }

  .rect-1-2 {
    flex-direction: row;
    margin-top: 15px;
  }

  .rect {
    width: 150px;
    height: 100px;
  }

  .rect1 {
    background-color: dodgerblue;
  }

  .rect2 {
    margin-left: auto;
    background-color: seagreen;
  }

  .rect-info-1-2 {
    flex-direction: row;
    margin-top: 15px;
  }

  .rect-info {
    flex: 1;
    flex-direction: column;
  }

  .node-info-item {
    flex-direction: row;
  }

  .node-info-item-k {
    width: 72px;
    line-height: 2;
  }

  .node-info-item-v {
    font-weight: bold;
    line-height: 2;
  }

  .test-text {
    padding: 10px;
    background-color: #d6d6d6;
    margin: 10px 0;
    font-size: 16px;
    color: #333;
  }

  .test-image {
    margin: 10px 0;
    width: 100px;
    height: 100px;
  }

  .test-scroll-view {
    margin: 10px 0;
    width: 300px;
    height: 100px;
    border: 1px solid #ccc;
  }

</style>