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- <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>
- /**
- * 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
- */
- import parser from './parser.js';
- const plugins = [];
- // #ifndef APP-PLUS-NVUE
- import node from './node';
- // #endif
- // #ifdef APP-PLUS-NVUE
- const dom = weex.requireModule('dom');
- // #endif
- export default {
- name: 'mp-html',
- data() {
- return {
- nodes: [],
- // #ifdef APP-PLUS-NVUE
- height: 0,
- // #endif
- };
- },
- props: {
- // #ifdef APP-PLUS-NVUE
- bgColor: String,
- // #endif
- content: String,
- copyLink: {
- type: Boolean,
- default: true,
- },
- domain: String,
- errorImg: {
- type: String,
- default: '',
- },
- lazyLoad: {
- type: Boolean,
- default: true,
- },
- loadingImg: {
- type: String,
- default: '',
- },
- pauseVideo: {
- type: Boolean,
- default: true,
- },
- previewImg: {
- type: Boolean,
- default: true,
- },
- scrollTable: Boolean,
- selectable: Boolean,
- setTitle: {
- type: Boolean,
- default: true,
- },
- showImgMenu: {
- type: Boolean,
- default: true,
- },
- tagStyle: Object,
- useAnchor: null,
- },
- // #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;
- // 页面跳转
- else
- 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;
- /* margin: 30rpx; */
- text-align: justify;
- }
- /* 长按复制 */
- ._select {
- user-select: text;
- }
- /* #endif */
- </style>
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