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