| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366 | <template>  <view id="_root" :class="(selectable?'_select ':'')+'_root'">    <slot v-if="!nodes[0]" />    <!-- #ifndef APP-PLUS-NVUE -->    <node v-else :childs="nodes" :opts="[lazyLoad,loadingImg,errorImg,showImgMenu]" />    <!-- #endif -->    <!-- #ifdef APP-PLUS-NVUE -->    <web-view ref="web" src="/static/app-plus/mp-html/local.html" :style="'margin-top:-2px;height:' + height + 'px'" @onPostMessage="_onMessage" />    <!-- #endif -->  </view></template><script>	import props from './props.js';/** * mp-html v2.0.4 * @description 富文本组件 * @tutorial https://github.com/jin-yufeng/mp-html * @property {String}			bgColor		背景颜色,只适用与APP-PLUS-NVUE * @property {String}			content		用于渲染的富文本字符串(默认 true ) * @property {Boolean}			copyLink	是否允许外部链接被点击时自动复制 * @property {String}			domain		主域名,用于拼接链接 * @property {String}			errorImg	图片出错时的占位图链接 * @property {Boolean}			lazyLoad	是否开启图片懒加载(默认 true ) * @property {string}			loadingImg	图片加载过程中的占位图链接 * @property {Boolean}			pauseVideo	是否在播放一个视频时自动暂停其它视频(默认 true ) * @property {Boolean}			previewImg	是否允许图片被点击时自动预览(默认 true ) * @property {Boolean}			scrollTable	是否给每个表格添加一个滚动层使其能单独横向滚动 * @property {Boolean}			selectable	是否开启长按复制 * @property {Boolean}			setTitle	是否将 title 标签的内容设置到页面标题(默认 true ) * @property {Boolean}			showImgMenu	是否允许图片被长按时显示菜单(默认 true ) * @property {Object}			tagStyle	标签的默认样式 * @property {Boolean | Number}	useAnchor	是否使用锚点链接 *  * @event {Function}	load	dom 结构加载完毕时触发 * @event {Function}	ready	所有图片加载完毕时触发 * @event {Function}	imgTap	图片被点击时触发 * @event {Function}	linkTap	链接被点击时触发 * @event {Function}	error	媒体加载出错时触发 */const plugins=[]const parser = require('./parser')// #ifndef APP-PLUS-NVUEimport node from './node/node'// #endif// #ifdef APP-PLUS-NVUEconst dom = weex.requireModule('dom')// #endifexport default {  name: 'mp-html',  data() {    return {      nodes: [],      // #ifdef APP-PLUS-NVUE      height: 0      // #endif    }  },  mixins:[props],  // #ifndef APP-PLUS-NVUE  components: {    node  },  // #endif  watch: {    content(content) {      this.setContent(content)    }  },  created() {    this.plugins = []    for (let i = plugins.length; i--;)      this.plugins.push(new plugins[i](this))  },  mounted() {    if (this.content && !this.nodes.length)      this.setContent(this.content)  },  beforeDestroy() {    this._hook('onDetached')    clearInterval(this._timer)  },  methods: {    /**     * @description 将锚点跳转的范围限定在一个 scroll-view 内     * @param {Object} page scroll-view 所在页面的示例     * @param {String} selector scroll-view 的选择器     * @param {String} scrollTop scroll-view scroll-top 属性绑定的变量名     */    in(page, selector, scrollTop) {      // #ifndef APP-PLUS-NVUE      if (page && selector && scrollTop)        this._in = {          page,          selector,          scrollTop        }      // #endif    },    /**     * @description 锚点跳转     * @param {String} id 要跳转的锚点 id     * @param {Number} offset 跳转位置的偏移量     * @returns {Promise}     */    navigateTo(id, offset) {      return new Promise((resolve, reject) => {        if (!this.useAnchor)          return reject('Anchor is disabled')        offset = offset || parseInt(this.useAnchor) || 0        // #ifdef APP-PLUS-NVUE        if (!id) {          dom.scrollToElement(this.$refs.web, {            offset          })          resolve()        } else {          this._navigateTo = {            resolve,            reject,            offset          }          this.$refs.web.evalJs('uni.postMessage({data:{action:"getOffset",offset:(document.getElementById(' + id + ')||{}).offsetTop}})')        }        // #endif        // #ifndef APP-PLUS-NVUE        let deep = ' '        // #ifdef MP-WEIXIN || MP-QQ || MP-TOUTIAO        deep = '>>>'        // #endif        const selector = uni.createSelectorQuery()          // #ifndef MP-ALIPAY          .in(this._in ? this._in.page : this)          // #endif          .select((this._in ? this._in.selector : '._root') + (id ? `${deep}#${id}` : '')).boundingClientRect()        if (this._in)          selector.select(this._in.selector).scrollOffset()            .select(this._in.selector).boundingClientRect() // 获取 scroll-view 的位置和滚动距离        else          selector.selectViewport().scrollOffset() // 获取窗口的滚动距离        selector.exec(res => {          if (!res[0])            return reject('Label not found')          const scrollTop = res[1].scrollTop + res[0].top - (res[2] ? res[2].top : 0) + offset          if (this._in)            // scroll-view 跳转            this._in.page[this._in.scrollTop] = scrollTop          else            // 页面跳转            uni.pageScrollTo({              scrollTop,              duration: 300            })          resolve()        })        // #endif      })    },    /**     * @description 获取文本内容     * @return {String}     */    getText() {      let text = '';      (function traversal(nodes) {        for (let i = 0; i < nodes.length; i++) {          const node = nodes[i]          if (node.type == 'text')            text += node.text.replace(/&/g, '&')          else if (node.name == 'br')            text += '\n'          else {            // 块级标签前后加换行            const isBlock = node.name == 'p' || node.name == 'div' || node.name == 'tr' || node.name == 'li' || (node.name[0] == 'h' && node.name[1] > '0' && node.name[1] < '7')            if (isBlock && text && text[text.length - 1] != '\n')              text += '\n'            // 递归获取子节点的文本            if (node.children)              traversal(node.children)            if (isBlock && text[text.length - 1] != '\n')              text += '\n'            else if (node.name == 'td' || node.name == 'th')              text += '\t'          }        }      })(this.nodes)      return text    },    /**     * @description 获取内容大小和位置     * @return {Promise}     */    getRect() {      return new Promise((resolve, reject) => {        uni.createSelectorQuery()          // #ifndef MP-ALIPAY          .in(this)          // #endif          .select('#_root').boundingClientRect().exec(res => res[0] ? resolve(res[0]) : reject('Root label not found'))      })    },    /**     * @description 设置内容     * @param {String} content html 内容     * @param {Boolean} append 是否在尾部追加     */    setContent(content, append) {      if (!append || !this.imgList)        this.imgList = []      const nodes = new parser(this).parse(content)      // #ifdef APP-PLUS-NVUE      if (this._ready)        this._set(nodes, append)      // #endif      this.$set(this, 'nodes', append ? (this.nodes || []).concat(nodes) : nodes)      // #ifndef APP-PLUS-NVUE      this._videos = []      this.$nextTick(() => {        this._hook('onLoad')        this.$emit('load')      })      // 等待图片加载完毕      let height      clearInterval(this._timer)      this._timer = setInterval(() => {        this.getRect().then(rect => {          // 350ms 总高度无变化就触发 ready 事件          if (rect.height == height) {            this.$emit('ready', rect)            clearInterval(this._timer)          }          height = rect.height        }).catch(() => { })      }, 350)      // #endif    },    /**     * @description 调用插件钩子函数     */    _hook(name) {      for (let i = plugins.length; i--;)        if (this.plugins[i][name])          this.plugins[i][name]()    },    // #ifdef APP-PLUS-NVUE    /**     * @description 设置内容     */    _set(nodes, append) {      this.$refs.web.evalJs('setContent(' + JSON.stringify(nodes) + ',' + JSON.stringify([this.bgColor, this.errorImg, this.loadingImg, this.pauseVideo, this.scrollTable, this.selectable]) + ',' + append + ')')    },    /**     * @description 接收到 web-view 消息     */    _onMessage(e) {      const message = e.detail.data[0]      switch (message.action) {        // web-view 初始化完毕        case 'onJSBridgeReady':          this._ready = true          if (this.nodes)            this._set(this.nodes)          break        // 内容 dom 加载完毕        case 'onLoad':          this.height = message.height          this._hook('onLoad')          this.$emit('load')          break        // 所有图片加载完毕        case 'onReady':          this.getRect().then(res => {            this.$emit('ready', res)          }).catch(() => { })          break        // 总高度发生变化        case 'onHeightChange':          this.height = message.height          break        // 图片点击        case 'onImgTap':          this.$emit('imgTap', message.attrs)          if (this.previewImg)            uni.previewImage({              current: parseInt(message.attrs.i),              urls: this.imgList            })          break        // 链接点击        case 'onLinkTap':          const href = message.attrs.href          this.$emit('linkTap', message.attrs)          if (href) {            // 锚点跳转            if (href[0] == '#') {              if (this.useAnchor)                dom.scrollToElement(this.$refs.web, {                  offset: message.offset                })            }            // 打开外链            else if (href.includes('://')) {              if (this.copyLink)                plus.runtime.openWeb(href)            }            else              uni.navigateTo({                url: href,                fail() {                  wx.switchTab({                    url: href                  })                }              })          }          break        // 获取到锚点的偏移量        case 'getOffset':          if (typeof message.offset == 'number') {            dom.scrollToElement(this.$refs.web, {              offset: message.offset + this._navigateTo.offset            })            this._navigateTo.resolve()          } else            this._navigateTo.reject('Label not found')          break        // 点击        case 'onClick':          this.$emit('tap')          break        // 出错        case 'onError':          this.$emit('error', {            source: message.source,            attrs: message.attrs          })      }    }    // #endif  }}</script><style>/* #ifndef APP-PLUS-NVUE *//* 根节点样式 */._root {  overflow: auto;  -webkit-overflow-scrolling: touch;}/* 长按复制 */._select {  user-select: text;}/* #endif */</style>
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