pco/app/uview-ui/components/u-parse/libs/trees.vue

<template>
  <view :class="'interlayer '+(c||'')" :style="s">
    <block v-for="(n, i) in nodes" v-bind:key="i">
      <!--图片-->
      <view v-if="n.name=='img'" :class="'_img '+n.attrs.class" :style="n.attrs.style" :data-attrs="n.attrs"
            @tap.stop="imgtap">
        <rich-text v-if="ctrl[i]!=0"
                   :nodes="[{attrs:{src:loading&&(ctrl[i]||0)<2?loading:(lazyLoad&&!ctrl[i]?placeholder:(ctrl[i]==3?errorImg:n.attrs.src||'')),alt:n.attrs.alt||'',width:n.attrs.width||'',style:'-webkit-touch-callout:none;max-width:100%;display:block'+(n.attrs.height?';height:'+n.attrs.height:'')},name:'img'}]"/>
        <image class="_image" :src="lazyLoad&&!ctrl[i]?placeholder:n.attrs.src" :lazy-load="lazyLoad"
               :show-menu-by-longpress="!n.attrs.ignore" :data-i="i" :data-index="n.attrs.i" data-source="img"
               @load="loadImg"
               @error="error"/>
      </view>
      <!--文本-->
      <text v-else-if="n.type=='text'" decode>{{ n.text }}</text>
      <!--#ifndef MP-BAIDU-->
      <text v-else-if="n.name=='br'">\n</text>
      <!--#endif-->
      <!--视频-->
      <view v-else-if="((n.lazyLoad&&!n.attrs.autoplay)||(n.name=='video'&&!loadVideo))&&ctrl[i]==undefined"
            :id="n.attrs.id"
            :class="'_video '+(n.attrs.class||'')" :style="n.attrs.style" :data-i="i" @tap.stop="_loadVideo"/>
      <video v-else-if="n.name=='video'" :id="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style"
             :autoplay="n.attrs.autoplay||ctrl[i]==0"
             :controls="n.attrs.controls" :loop="n.attrs.loop" :muted="n.attrs.muted" :poster="n.attrs.poster"
             :src="n.attrs.source[ctrl[i]||0]"
             :unit-id="n.attrs['unit-id']" :data-id="n.attrs.id" :data-i="i" data-source="video" @error="error"
             @play="play"/>
      <!--音频-->
      <audio v-else-if="n.name=='audio'" :ref="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style"
             :author="n.attrs.author"
             :autoplay="n.attrs.autoplay" :controls="n.attrs.controls" :loop="n.attrs.loop" :name="n.attrs.name"
             :poster="n.attrs.poster"
             :src="n.attrs.source[ctrl[i]||0]" :data-i="i" :data-id="n.attrs.id" data-source="audio"
             @error.native="error"
             @play.native="play"/>
      <!--链接-->
      <view v-else-if="n.name=='a'" :id="n.attrs.id" :class="'_a '+(n.attrs.class||'')" hover-class="_hover"
            :style="n.attrs.style"
            :data-attrs="n.attrs" @tap.stop="linkpress">
        <trees class="_span" c="_span" :nodes="n.children"/>
      </view>
      <!--广告-->
      <!--<ad v-else-if="n.name=='ad'" :class="n.attrs.class" :style="n.attrs.style" :unit-id="n.attrs['unit-id']" :appid="n.attrs.appid" :apid="n.attrs.apid" :type="n.attrs.type" :adpid="n.attrs.adpid" data-source="ad" @error="error" />-->
      <!--列表-->
      <view v-else-if="n.name=='li'" :id="n.attrs.id" :class="n.attrs.class"
            :style="(n.attrs.style||'')+';display:flex;flex-direction:row'">
        <view v-if="n.type=='ol'" class="_ol-bef">{{ n.num }}</view>
        <view v-else class="_ul-bef">
          <view v-if="n.floor%3==0" class="_ul-p1">█</view>
          <view v-else-if="n.floor%3==2" class="_ul-p2"/>
          <view v-else class="_ul-p1" style="border-radius:50%">█</view>
        </view>
        <trees class="_li" c="_li" :nodes="n.children" :lazyLoad="lazyLoad" :loading="loading"/>
      </view>
      <!--表格-->
      <view v-else-if="n.name=='table'&&n.c&&n.flag" :id="n.attrs.id" :class="n.attrs.class"
            :style="(n.attrs.style||'')+';display:grid'">
        <trees v-for="(cell,n) in n.children" v-bind:key="n" :class="cell.attrs.class" :c="cell.attrs.class"
               :style="cell.attrs.style"
               :s="cell.attrs.style" :nodes="cell.children"/>
      </view>
      <view v-else-if="n.name=='table'&&n.c" :id="n.attrs.id" :class="n.attrs.class"
            :style="(n.attrs.style||'')+';display:table'">
        <view v-for="(tbody, o) in n.children" v-bind:key="o" :class="tbody.attrs.class"
              :style="(tbody.attrs.style||'')+(tbody.name[0]=='t'?';display:table-'+(tbody.name=='tr'?'row':'row-group'):'')">
          <view v-for="(tr, p) in tbody.children" v-bind:key="p" :class="tr.attrs.class"
                :style="(tr.attrs.style||'')+(tr.name[0]=='t'?';display:table-'+(tr.name=='tr'?'row':'cell'):'')">
            <trees v-if="tr.name=='td'" :nodes="tr.children"/>
            <trees v-else v-for="(td, q) in tr.children" v-bind:key="q" :class="td.attrs.class" :c="td.attrs.class"
                   :style="(td.attrs.style||'')+(td.name[0]=='t'?';display:table-'+(td.name=='tr'?'row':'cell'):'')"
                   :s="(td.attrs.style||'')+(td.name[0]=='t'?';display:table-'+(td.name=='tr'?'row':'cell'):'')"
                   :nodes="td.children"/>
          </view>
        </view>
      </view>
      <!--#ifdef APP-PLUS-->
      <iframe v-else-if="n.name=='iframe'" :style="n.attrs.style" :allowfullscreen="n.attrs.allowfullscreen"
              :frameborder="n.attrs.frameborder"
              :width="n.attrs.width" :height="n.attrs.height" :src="n.attrs.src"/>
      <embed v-else-if="n.name=='embed'" :style="n.attrs.style" :width="n.attrs.width" :height="n.attrs.height"
             :src="n.attrs.src"/>
      <!--#endif-->
      <!--富文本-->
      <!--#ifdef MP-WEIXIN || MP-QQ || APP-PLUS-->
      <rich-text v-else-if="handler.use(n)" :id="n.attrs.id" :class="'_p __'+n.name" :nodes="[n]"/>
      <!--#endif-->
      <!--#ifndef MP-WEIXIN || MP-QQ || APP-PLUS-->
      <rich-text v-else-if="!n.c" :id="n.attrs.id" :nodes="[n]" style="display:inline"/>
      <!--#endif-->
      <trees v-else :class="(n.attrs.id||'')+' _'+n.name+' '+(n.attrs.class||'')"
             :c="(n.attrs.id||'')+' _'+n.name+' '+(n.attrs.class||'')"
             :style="n.attrs.style" :s="n.attrs.style" :nodes="n.children" :lazyLoad="lazyLoad" :loading="loading"/>
    </block>
  </view>
</template>
<script module="handler" lang="wxs" src="./handler.wxs"></script>
<script>
global.Parser = {};
import trees from './trees'

const errorImg = require('../libs/config.js').errorImg;
export default {
  components: {
    trees
  },
  name: 'trees',
  data() {
    return {
      ctrl: [],
      placeholder: 'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="300" height="225"/>',
      errorImg,
      loadVideo: typeof plus == 'undefined',
      // #ifndef MP-ALIPAY
      c: '',
      s: ''
      // #endif
    }
  },
  props: {
    nodes: Array,
    lazyLoad: Boolean,
    loading: String,
    // #ifdef MP-ALIPAY
    c: String,
    s: String
    // #endif
  },
  mounted() {
    for (this.top = this.$parent; this.top.$options.name != 'parser'; this.top = this.top.$parent) ;
    this.init();
  },
  // #ifdef APP-PLUS
  beforeDestroy() {
    this.observer && this.observer.disconnect();
  },
  // #endif
  methods: {
    init() {
      for (var i = this.nodes.length, n; n = this.nodes[--i];) {
        if (n.name == 'img') {
          this.top.imgList.setItem(n.attrs.i, n.attrs['original-src'] || n.attrs.src);
          // #ifdef APP-PLUS
          if (this.lazyLoad && !this.observer) {
            this.observer = uni.createIntersectionObserver(this).relativeToViewport({
              top: 500,
              bottom: 500
            });
            setTimeout(() => {
              this.observer.observe('._img', res => {
                if (res.intersectionRatio) {
                  for (var j = this.nodes.length; j--;)
                    if (this.nodes[j].name == 'img')
                      this.$set(this.ctrl, j, 1);
                  this.observer.disconnect();
                }
              })
            }, 0)
          }
          // #endif
        } else if (n.name == 'video' || n.name == 'audio') {
          var ctx;
          if (n.name == 'video') {
            ctx = uni.createVideoContext(n.attrs.id
                // #ifndef MP-BAIDU
                , this
                // #endif
            );
          } else if (this.$refs[n.attrs.id])
            ctx = this.$refs[n.attrs.id][0];
          if (ctx) {
            ctx.id = n.attrs.id;
            this.top.videoContexts.push(ctx);
          }
        }
      }
      // #ifdef APP-PLUS
      // APP 上避免 video 错位需要延时渲染
      setTimeout(() => {
        this.loadVideo = true;
      }, 1000)
      // #endif
    },
    play(e) {
      var contexts = this.top.videoContexts;
      if (contexts.length > 1 && this.top.autopause)
        for (var i = contexts.length; i--;)
          if (contexts[i].id != e.currentTarget.dataset.id)
            contexts[i].pause();
    },
    imgtap(e) {
      var attrs = e.currentTarget.dataset.attrs;
      if (!attrs.ignore) {
        var preview = true,
            data = {
              id: e.target.id,
              src: attrs.src,
              ignore: () => preview = false
            };
        global.Parser.onImgtap && global.Parser.onImgtap(data);
        this.top.$emit('imgtap', data);
        if (preview) {
          var urls = this.top.imgList,
              current = urls[attrs.i] ? parseInt(attrs.i) : (urls = [attrs.src], 0);
          uni.previewImage({
            current,
            urls
          })
        }
      }
    },
    loadImg(e) {
      var i = e.currentTarget.dataset.i;
      if (this.lazyLoad && !this.ctrl[i]) {
        // #ifdef QUICKAPP-WEBVIEW
        this.$set(this.ctrl, i, 0);
        this.$nextTick(function () {
          // #endif
          // #ifndef APP-PLUS
          this.$set(this.ctrl, i, 1);
          // #endif
          // #ifdef QUICKAPP-WEBVIEW
        })
        // #endif
      } else if (this.loading && this.ctrl[i] != 2) {
        // #ifdef QUICKAPP-WEBVIEW
        this.$set(this.ctrl, i, 0);
        this.$nextTick(function () {
          // #endif
          this.$set(this.ctrl, i, 2);
          // #ifdef QUICKAPP-WEBVIEW
        })
        // #endif
      }
    },
    linkpress(e) {
      var jump = true,
          attrs = e.currentTarget.dataset.attrs;
      attrs.ignore = () => jump = false;
      global.Parser.onLinkpress && global.Parser.onLinkpress(attrs);
      this.top.$emit('linkpress', attrs);
      if (jump) {
        // #ifdef MP
        if (attrs['app-id']) {
          return uni.navigateToMiniProgram({
            appId: attrs['app-id'],
            path: attrs.path
          })
        }
        // #endif
        if (attrs.href) {
          if (attrs.href[0] == '#') {
            if (this.top.useAnchor)
              this.top.navigateTo({
                id: attrs.href.substring(1)
              })
          } else if (attrs.href.indexOf('http') == 0 || attrs.href.indexOf('//') == 0) {
            // #ifdef APP-PLUS
            plus.runtime.openWeb(attrs.href);
            // #endif
            // #ifndef APP-PLUS
            uni.setClipboardData({
              data: attrs.href,
              success: () =>
                  uni.showToast({
                    title: '链接已复制'
                  })
            })
            // #endif
          } else
            uni.navigateTo({
              url: attrs.href,
              fail() {
                uni.switchTab({
                  url: attrs.href,
                })
              }
            })
        }
      }
    },
    error(e) {
      var target = e.currentTarget,
          source = target.dataset.source,
          i = target.dataset.i;
      if (source == 'video' || source == 'audio') {
        // 加载其他 source
        var index = this.ctrl[i] ? this.ctrl[i].i + 1 : 1;
        if (index < this.nodes[i].attrs.source.length)
          this.$set(this.ctrl, i, index);
        if (e.detail.__args__)
          e.detail = e.detail.__args__[0];
      } else if (errorImg && source == 'img') {
        this.top.imgList.setItem(target.dataset.index, errorImg);
        this.$set(this.ctrl, i, 3);
      }
      this.top && this.top.$emit('error', {
        source,
        target,
        errMsg: e.detail.errMsg
      });
    },
    _loadVideo(e) {
      this.$set(this.ctrl, e.target.dataset.i, 0);
    }
  }
}
</script>

<style>
/* 在这里引入自定义样式 */

/* 链接和图片效果 */
._a {
  display: inline;
  padding: 1.5px 0 1.5px 0;
  color: #366092;
  word-break: break-all;
}

._hover {
  text-decoration: underline;
  opacity: 0.7;
}

._img {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
}

/* #ifdef MP-WEIXIN */
:host {
  display: inline;
}

/* #endif */

/* #ifndef MP-ALIPAY || APP-PLUS */
.interlayer {
  display: inherit;
  flex-direction: inherit;
  flex-wrap: inherit;
  align-content: inherit;
  align-items: inherit;
  justify-content: inherit;
  width: 100%;
  white-space: inherit;
}

/* #endif */

._b,
._strong {
  font-weight: bold;
}

/* #ifndef MP-ALIPAY */
._blockquote,
._div,
._p,
._ol,
._ul,
._li {
  display: block;
}

/* #endif */

._code {
  font-family: monospace;
}

._del {
  text-decoration: line-through;
}

._em,
._i {
  font-style: italic;
}

._h1 {
  font-size: 2em;
}

._h2 {
  font-size: 1.5em;
}

._h3 {
  font-size: 1.17em;
}

._h5 {
  font-size: 0.83em;
}

._h6 {
  font-size: 0.67em;
}

._h1,
._h2,
._h3,
._h4,
._h5,
._h6 {
  display: block;
  font-weight: bold;
}

._image {
  display: block;
  width: 100%;
  height: 360px;
  margin-top: -360px;
  opacity: 0;
}

._ins {
  text-decoration: underline;
}

._li {
  flex: 1;
  width: 0;
}

._ol-bef {
  width: 36px;
  margin-right: 5px;
  text-align: right;
}

._ul-bef {
  display: block;
  margin: 0 12px 0 23px;
  line-height: normal;
}

._ol-bef,
._ul-bef {
  flex: none;
  user-select: none;
}

._ul-p1 {
  display: inline-block;
  width: 0.3em;
  height: 0.3em;
  overflow: hidden;
  line-height: 0.3em;
}

._ul-p2 {
  display: inline-block;
  width: 0.23em;
  height: 0.23em;
  border: 0.05em solid black;
  border-radius: 50%;
}

._q::before {
  content: '"';
}

._q::after {
  content: '"';
}

._sub {
  font-size: smaller;
  vertical-align: sub;
}

._sup {
  font-size: smaller;
  vertical-align: super;
}

/* #ifdef MP-ALIPAY || APP-PLUS || QUICKAPP-WEBVIEW */
._abbr,
._b,
._code,
._del,
._em,
._i,
._ins,
._label,
._q,
._span,
._strong,
._sub,
._sup {
  display: inline;
}

/* #endif */

/* #ifdef MP-WEIXIN || MP-QQ */
.__bdo,
.__bdi,
.__ruby,
.__rt {
  display: inline-block;
}

/* #endif */
._video {
  position: relative;
  display: inline-block;
  width: 300px;
  height: 225px;
  background-color: black;
}

._video::after {
  position: absolute;
  top: 50%;
  left: 50%;
  margin: -15px 0 0 -15px;
  content: '';
  border-color: transparent transparent transparent white;
  border-style: solid;
  border-width: 15px 0 15px 30px;
}
</style>