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645 lines
21 KiB
645 lines
21 KiB
<template> |
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<view> |
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<slot v-if="!nodes.length" /> |
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<!--#ifdef APP-PLUS-NVUE--> |
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<web-view id="_top" ref="web" :style="'margin-top:-2px;height:'+height+'px'" @onPostMessage="_message" /> |
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<!--#endif--> |
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<!--#ifndef APP-PLUS-NVUE--> |
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<view id="_top" :style="showAm+(selectable?';user-select:text;-webkit-user-select:text':'')"> |
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<!--#ifdef H5 || MP-360--> |
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<div :id="'rtf'+uid"></div> |
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<!--#endif--> |
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<!--#ifndef H5 || MP-360--> |
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<trees :nodes="nodes" :lazyLoad="lazyLoad" :loading="loadingImg" /> |
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<!--#endif--> |
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</view> |
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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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var search; |
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// #ifndef H5 || APP-PLUS-NVUE || MP-360 |
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import trees from './libs/trees'; |
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var cache = {}, |
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// #ifdef MP-WEIXIN || MP-TOUTIAO |
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fs = uni.getFileSystemManager ? uni.getFileSystemManager() : null, |
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// #endif |
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Parser = require('./libs/MpHtmlParser.js'); |
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var dom; |
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// 计算 cache 的 key |
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function hash(str) { |
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for (var i = str.length, val = 5381; i--;) |
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val += (val << 5) + str.charCodeAt(i); |
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return val; |
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} |
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// #endif |
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// #ifdef H5 || APP-PLUS-NVUE || MP-360 |
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var { |
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windowWidth, |
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platform |
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} = uni.getSystemInfoSync(), |
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cfg = require('./libs/config.js'); |
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// #endif |
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// #ifdef APP-PLUS-NVUE |
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var weexDom = weex.requireModule('dom'); |
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// #endif |
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/** |
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* Parser 富文本组件 |
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* @tutorial https://github.com/jin-yufeng/Parser |
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* @property {String} html 富文本数据 |
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* @property {Boolean} autopause 是否在播放一个视频时自动暂停其他视频 |
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* @property {Boolean} autoscroll 是否自动给所有表格添加一个滚动层 |
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* @property {Boolean} autosetTitle 是否自动将 title 标签中的内容设置到页面标题 |
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* @property {Number} compress 压缩等级 |
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* @property {String} domain 图片、视频等链接的主域名 |
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* @property {Boolean} lazyLoad 是否开启图片懒加载 |
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* @property {String} loadingImg 图片加载完成前的占位图 |
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* @property {Boolean} selectable 是否开启长按复制 |
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* @property {Object} tagStyle 标签的默认样式 |
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* @property {Boolean} showWithAnimation 是否使用渐显动画 |
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* @property {Boolean} useAnchor 是否使用锚点 |
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* @property {Boolean} useCache 是否缓存解析结果 |
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* @event {Function} parse 解析完成事件 |
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* @event {Function} load dom 加载完成事件 |
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* @event {Function} ready 所有图片加载完毕事件 |
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* @event {Function} error 错误事件 |
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* @event {Function} imgtap 图片点击事件 |
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* @event {Function} linkpress 链接点击事件 |
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* @author JinYufeng |
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* @version 20201029 |
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* @listens MIT |
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*/ |
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export default { |
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name: 'parser', |
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data() { |
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return { |
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// #ifdef H5 || MP-360 |
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uid: this._uid, |
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// #endif |
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// #ifdef APP-PLUS-NVUE |
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height: 1, |
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// #endif |
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// #ifndef APP-PLUS-NVUE |
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showAm: '', |
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// #endif |
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nodes: [] |
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} |
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}, |
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// #ifndef H5 || APP-PLUS-NVUE || MP-360 |
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components: { |
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trees |
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}, |
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// #endif |
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props: { |
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html: String, |
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autopause: { |
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type: Boolean, |
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default: true |
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}, |
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autoscroll: Boolean, |
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autosetTitle: { |
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type: Boolean, |
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default: true |
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}, |
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// #ifndef H5 || APP-PLUS-NVUE || MP-360 |
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compress: Number, |
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loadingImg: String, |
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useCache: Boolean, |
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// #endif |
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domain: String, |
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lazyLoad: Boolean, |
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selectable: Boolean, |
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tagStyle: Object, |
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showWithAnimation: Boolean, |
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useAnchor: Boolean |
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}, |
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watch: { |
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html(html) { |
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this.setContent(html); |
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} |
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}, |
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created() { |
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// 图片数组 |
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this.imgList = []; |
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this.imgList.each = function(f) { |
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for (var i = 0, len = this.length; i < len; i++) |
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this.setItem(i, f(this[i], i, this)); |
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} |
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this.imgList.setItem = function(i, src) { |
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if (i == void 0 || !src) return; |
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// #ifndef MP-ALIPAY || APP-PLUS |
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// 去重 |
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if (src.indexOf('http') == 0 && this.includes(src)) { |
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var newSrc = src.split('://')[0]; |
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for (var j = newSrc.length, c; c = src[j]; j++) { |
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if (c == '/' && src[j - 1] != '/' && src[j + 1] != '/') break; |
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newSrc += Math.random() > 0.5 ? c.toUpperCase() : c; |
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} |
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newSrc += src.substr(j); |
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return this[i] = newSrc; |
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} |
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// #endif |
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this[i] = src; |
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// 暂存 data src |
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if (src.includes('data:image')) { |
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var filePath, info = src.match(/data:image\/(\S+?);(\S+?),(.+)/); |
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if (!info) return; |
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// #ifdef MP-WEIXIN || MP-TOUTIAO |
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filePath = `${wx.env.USER_DATA_PATH}/${Date.now()}.${info[1]}`; |
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fs && fs.writeFile({ |
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filePath, |
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data: info[3], |
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encoding: info[2], |
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success: () => this[i] = filePath |
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}) |
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// #endif |
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// #ifdef APP-PLUS |
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filePath = `_doc/parser_tmp/${Date.now()}.${info[1]}`; |
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var bitmap = new plus.nativeObj.Bitmap(); |
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bitmap.loadBase64Data(src, () => { |
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bitmap.save(filePath, {}, () => { |
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bitmap.clear() |
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this[i] = filePath; |
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}) |
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}) |
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// #endif |
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} |
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} |
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}, |
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mounted() { |
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// #ifdef H5 || MP-360 |
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this.document = document.getElementById('rtf' + this._uid); |
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// #endif |
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// #ifndef H5 || APP-PLUS-NVUE || MP-360 |
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if (dom) this.document = new dom(this); |
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// #endif |
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if (search) this.search = args => search(this, args); |
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// #ifdef APP-PLUS-NVUE |
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this.document = this.$refs.web; |
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setTimeout(() => { |
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// #endif |
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if (this.html) this.setContent(this.html); |
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// #ifdef APP-PLUS-NVUE |
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}, 30) |
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// #endif |
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}, |
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beforeDestroy() { |
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// #ifdef H5 || MP-360 |
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if (this._observer) this._observer.disconnect(); |
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// #endif |
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this.imgList.each(src => { |
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// #ifdef APP-PLUS |
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if (src && src.includes('_doc')) { |
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plus.io.resolveLocalFileSystemURL(src, entry => { |
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entry.remove(); |
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}); |
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} |
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// #endif |
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// #ifdef MP-WEIXIN || MP-TOUTIAO |
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if (src && src.includes(uni.env.USER_DATA_PATH)) |
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fs && fs.unlink({ |
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filePath: src |
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}) |
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// #endif |
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}) |
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clearInterval(this._timer); |
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}, |
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methods: { |
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// 设置富文本内容 |
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setContent(html, append) { |
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// #ifdef APP-PLUS-NVUE |
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if (!html) |
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return this.height = 1; |
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if (append) |
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this.$refs.web.evalJs("var b=document.createElement('div');b.innerHTML='" + html.replace(/'/g, "\\'") + |
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"';document.getElementById('parser').appendChild(b)"); |
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else { |
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html = |
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'<meta charset="utf-8" /><meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no"><style>html,body{width:100%;height:100%;overflow:hidden}body{margin:0}</style><base href="' + |
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this.domain + '"><div id="parser"' + (this.selectable ? '>' : ' style="user-select:none">') + this._handleHtml(html).replace(/\n/g, '\\n') + |
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'</div><script>"use strict";function e(e){if(window.__dcloud_weex_postMessage||window.__dcloud_weex_){var t={data:[e]};window.__dcloud_weex_postMessage?window.__dcloud_weex_postMessage(t):window.__dcloud_weex_.postMessage(JSON.stringify(t))}}document.body.onclick=function(){e({action:"click"})},' + |
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(this.showWithAnimation ? 'document.body.style.animation="_show .5s",' : '') + |
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'setTimeout(function(){e({action:"load",text:document.body.innerText,height:document.getElementById("parser").scrollHeight})},50);\x3c/script>'; |
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if (platform == 'android') html = html.replace(/%/g, '%25'); |
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this.$refs.web.evalJs("document.write('" + html.replace(/'/g, "\\'") + "');document.close()"); |
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} |
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this.$refs.web.evalJs( |
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'var t=document.getElementsByTagName("title");t.length&&e({action:"getTitle",title:t[0].innerText});for(var o,n=document.getElementsByTagName("style"),r=1;o=n[r++];)o.innerHTML=o.innerHTML.replace(/body/g,"#parser");for(var a,c=document.getElementsByTagName("img"),s=[],i=0==c.length,d=0,l=0,g=0;a=c[l];l++)parseInt(a.style.width||a.getAttribute("width"))>' + |
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windowWidth + '&&(a.style.height="auto"),a.onload=function(){++d==c.length&&(i=!0)},a.onerror=function(){++d==c.length&&(i=!0),' + (cfg.errorImg ? 'this.src="' + cfg.errorImg + '",' : '') + |
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'e({action:"error",source:"img",target:this})},a.hasAttribute("ignore")||"A"==a.parentElement.nodeName||(a.i=g++,s.push(a.getAttribute("original-src")||a.src||a.getAttribute("data-src")),a.onclick=function(t){t.stopPropagation(),e({action:"preview",img:{i:this.i,src:this.src}})});e({action:"getImgList",imgList:s});for(var u,m=document.getElementsByTagName("a"),f=0;u=m[f];f++)u.onclick=function(m){m.stopPropagation();var t,o=this.getAttribute("href");if("#"==o[0]){var n=document.getElementById(o.substr(1));n&&(t=n.offsetTop)}return e({action:"linkpress",href:o,offset:t}),!1};for(var h,y=document.getElementsByTagName("video"),v=0;h=y[v];v++)h.style.maxWidth="100%",h.onerror=function(){e({action:"error",source:"video",target:this})}' + |
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(this.autopause ? ',h.onplay=function(){for(var e,t=0;e=y[t];t++)e!=this&&e.pause()}' : '') + |
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';for(var _,p=document.getElementsByTagName("audio"),w=0;_=p[w];w++)_.onerror=function(){e({action:"error",source:"audio",target:this})};' + |
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(this.autoscroll ? 'for(var T,E=document.getElementsByTagName("table"),B=0;T=E[B];B++){var N=document.createElement("div");N.style.overflow="scroll",T.parentNode.replaceChild(N,T),N.appendChild(T)}' : '') + |
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'var x=document.getElementById("parser");clearInterval(window.timer),window.timer=setInterval(function(){i&&clearInterval(window.timer),e({action:"ready",ready:i,height:x.scrollHeight})},350)' |
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) |
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this.nodes = [1]; |
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// #endif |
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// #ifdef H5 || MP-360 |
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if (!html) { |
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if (this.rtf && !append) this.rtf.parentNode.removeChild(this.rtf); |
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return; |
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} |
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var div = document.createElement('div'); |
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if (!append) { |
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if (this.rtf) this.rtf.parentNode.removeChild(this.rtf); |
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this.rtf = div; |
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} else { |
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if (!this.rtf) this.rtf = div; |
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else this.rtf.appendChild(div); |
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} |
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div.innerHTML = this._handleHtml(html, append); |
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for (var styles = this.rtf.getElementsByTagName('style'), i = 0, style; style = styles[i++];) { |
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style.innerHTML = style.innerHTML.replace(/body/g, '#rtf' + this._uid); |
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style.setAttribute('scoped', 'true'); |
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} |
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// 懒加载 |
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if (!this._observer && this.lazyLoad && IntersectionObserver) { |
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this._observer = new IntersectionObserver(changes => { |
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for (let item, i = 0; item = changes[i++];) { |
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if (item.isIntersecting) { |
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item.target.src = item.target.getAttribute('data-src'); |
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item.target.removeAttribute('data-src'); |
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this._observer.unobserve(item.target); |
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} |
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} |
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}, { |
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rootMargin: '500px 0px 500px 0px' |
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}) |
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} |
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var _ts = this; |
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// 获取标题 |
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var title = this.rtf.getElementsByTagName('title'); |
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if (title.length && this.autosetTitle) |
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uni.setNavigationBarTitle({ |
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title: title[0].innerText |
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}) |
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// 填充 domain |
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var fill = target => { |
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var src = target.getAttribute('src'); |
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if (this.domain && src) { |
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if (src[0] == '/') { |
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if (src[1] == '/') |
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target.src = (this.domain.includes('://') ? this.domain.split('://')[0] : '') + ':' + src; |
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else target.src = this.domain + src; |
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} else if (!src.includes('://') && src.indexOf('data:') != 0) target.src = this.domain + '/' + src; |
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} |
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} |
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// 图片处理 |
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this.imgList.length = 0; |
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var imgs = this.rtf.getElementsByTagName('img'); |
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for (let i = 0, j = 0, img; img = imgs[i]; i++) { |
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if (parseInt(img.style.width || img.getAttribute('width')) > windowWidth) |
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img.style.height = 'auto'; |
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fill(img); |
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if (!img.hasAttribute('ignore') && img.parentElement.nodeName != 'A') { |
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img.i = j++; |
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_ts.imgList.push(img.getAttribute('original-src') || img.src || img.getAttribute('data-src')); |
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img.onclick = function(e) { |
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e.stopPropagation(); |
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var preview = true; |
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this.ignore = () => preview = false; |
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_ts.$emit('imgtap', this); |
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if (preview) { |
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uni.previewImage({ |
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current: this.i, |
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urls: _ts.imgList |
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}); |
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} |
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} |
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} |
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img.onerror = function() { |
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if (cfg.errorImg) |
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_ts.imgList[this.i] = this.src = cfg.errorImg; |
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_ts.$emit('error', { |
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source: 'img', |
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target: this |
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}); |
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} |
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if (_ts.lazyLoad && this._observer && img.src && img.i != 0) { |
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img.setAttribute('data-src', img.src); |
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img.removeAttribute('src'); |
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this._observer.observe(img); |
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} |
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} |
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// 链接处理 |
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var links = this.rtf.getElementsByTagName('a'); |
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for (var link of links) { |
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link.onclick = function(e) { |
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e.stopPropagation(); |
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var jump = true, |
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href = this.getAttribute('href'); |
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_ts.$emit('linkpress', { |
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href, |
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ignore: () => jump = false |
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}); |
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if (jump && href) { |
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if (href[0] == '#') { |
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if (_ts.useAnchor) { |
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_ts.navigateTo({ |
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id: href.substr(1) |
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}) |
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} |
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} else if (href.indexOf('http') == 0 || href.indexOf('//') == 0) |
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return true; |
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else |
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uni.navigateTo({ |
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url: href |
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}) |
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} |
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return false; |
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} |
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} |
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// 视频处理 |
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var videos = this.rtf.getElementsByTagName('video'); |
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_ts.videoContexts = videos; |
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for (let video, i = 0; video = videos[i++];) { |
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fill(video); |
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video.style.maxWidth = '100%'; |
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video.onerror = function() { |
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_ts.$emit('error', { |
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source: 'video', |
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target: this |
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}); |
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} |
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video.onplay = function() { |
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if (_ts.autopause) |
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for (let item, i = 0; item = _ts.videoContexts[i++];) |
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if (item != this) item.pause(); |
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} |
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} |
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// 音频处理 |
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var audios = this.rtf.getElementsByTagName('audio'); |
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for (var audio of audios) { |
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fill(audio); |
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audio.onerror = function() { |
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_ts.$emit('error', { |
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source: 'audio', |
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target: this |
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}); |
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} |
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} |
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// 表格处理 |
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if (this.autoscroll) { |
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var tables = this.rtf.getElementsByTagName('table'); |
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for (var table of tables) { |
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let div = document.createElement('div'); |
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div.style.overflow = 'scroll'; |
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table.parentNode.replaceChild(div, table); |
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div.appendChild(table); |
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} |
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} |
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if (!append) this.document.appendChild(this.rtf); |
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this.$nextTick(() => { |
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this.nodes = [1]; |
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this.$emit('load'); |
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}); |
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setTimeout(() => this.showAm = '', 500); |
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// #endif |
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// #ifndef APP-PLUS-NVUE |
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// #ifndef H5 || MP-360 |
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var nodes; |
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if (!html) return this.nodes = []; |
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var parser = new Parser(html, this); |
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// 缓存读取 |
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if (this.useCache) { |
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var hashVal = hash(html); |
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if (cache[hashVal]) |
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nodes = cache[hashVal]; |
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else { |
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nodes = parser.parse(); |
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cache[hashVal] = nodes; |
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} |
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} else nodes = parser.parse(); |
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this.$emit('parse', nodes); |
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if (append) this.nodes = this.nodes.concat(nodes); |
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else this.nodes = nodes; |
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if (nodes.length && nodes.title && this.autosetTitle) |
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uni.setNavigationBarTitle({ |
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title: nodes.title |
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}) |
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if (this.imgList) this.imgList.length = 0; |
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this.videoContexts = []; |
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this.$nextTick(() => { |
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(function f(cs) { |
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for (var i = cs.length; i--;) { |
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if (cs[i].top) { |
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cs[i].controls = []; |
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cs[i].init(); |
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f(cs[i].$children); |
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} |
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} |
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})(this.$children) |
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this.$emit('load'); |
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}) |
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// #endif |
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var height; |
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clearInterval(this._timer); |
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this._timer = setInterval(() => { |
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// #ifdef H5 || MP-360 |
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this.rect = this.rtf.getBoundingClientRect(); |
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// #endif |
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// #ifndef H5 || MP-360 |
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uni.createSelectorQuery().in(this) |
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.select('#_top').boundingClientRect().exec(res => { |
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if (!res) return; |
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this.rect = res[0]; |
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// #endif |
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if (this.rect.height == height) { |
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this.$emit('ready', this.rect) |
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clearInterval(this._timer); |
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} |
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height = this.rect.height; |
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// #ifndef H5 || MP-360 |
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}); |
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// #endif |
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}, 350); |
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if (this.showWithAnimation && !append) this.showAm = 'animation:_show .5s'; |
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// #endif |
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}, |
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// 获取文本内容 |
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getText(ns = this.nodes) { |
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var txt = ''; |
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// #ifdef APP-PLUS-NVUE |
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txt = this._text; |
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// #endif |
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// #ifdef H5 || MP-360 |
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txt = this.rtf.innerText; |
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// #endif |
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// #ifndef H5 || APP-PLUS-NVUE || MP-360 |
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for (var i = 0, n; n = ns[i++];) { |
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if (n.type == 'text') txt += n.text.replace(/ /g, '\u00A0').replace(/</g, '<').replace(/>/g, '>') |
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.replace(/&/g, '&'); |
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else if (n.type == 'br') txt += '\n'; |
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else { |
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// 块级标签前后加换行 |
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var block = n.name == 'p' || n.name == 'div' || n.name == 'tr' || n.name == 'li' || (n.name[0] == 'h' && n.name[1] > |
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'0' && n.name[1] < '7'); |
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if (block && txt && txt[txt.length - 1] != '\n') txt += '\n'; |
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if (n.children) txt += this.getText(n.children); |
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if (block && txt[txt.length - 1] != '\n') txt += '\n'; |
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else if (n.name == 'td' || n.name == 'th') txt += '\t'; |
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} |
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} |
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// #endif |
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return txt; |
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}, |
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// 锚点跳转 |
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in (obj) { |
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if (obj.page && obj.selector && obj.scrollTop) this._in = obj; |
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}, |
|
navigateTo(obj) { |
|
if (!this.useAnchor) return obj.fail && obj.fail('Anchor is disabled'); |
|
// #ifdef APP-PLUS-NVUE |
|
if (!obj.id) |
|
weexDom.scrollToElement(this.$refs.web); |
|
else |
|
this.$refs.web.evalJs('var pos=document.getElementById("' + obj.id + |
|
'");if(pos)post({action:"linkpress",href:"#",offset:pos.offsetTop+' + (obj.offset || 0) + '})'); |
|
obj.success && obj.success(); |
|
// #endif |
|
// #ifndef APP-PLUS-NVUE |
|
var d = ' '; |
|
// #ifdef MP-WEIXIN || MP-QQ || MP-TOUTIAO |
|
d = '>>>'; |
|
// #endif |
|
var selector = uni.createSelectorQuery().in(this._in ? this._in.page : this).select((this._in ? this._in.selector : |
|
'#_top') + (obj.id ? `${d}#${obj.id},${this._in?this._in.selector:'#_top'}${d}.${obj.id}` : '')).boundingClientRect(); |
|
if (this._in) selector.select(this._in.selector).scrollOffset().select(this._in.selector).boundingClientRect(); |
|
else selector.selectViewport().scrollOffset(); |
|
selector.exec(res => { |
|
if (!res[0]) return obj.fail && obj.fail('Label not found') |
|
var scrollTop = res[1].scrollTop + res[0].top - (res[2] ? res[2].top : 0) + (obj.offset || 0); |
|
if (this._in) this._in.page[this._in.scrollTop] = scrollTop; |
|
else uni.pageScrollTo({ |
|
scrollTop, |
|
duration: 300 |
|
}) |
|
obj.success && obj.success(); |
|
}) |
|
// #endif |
|
}, |
|
// 获取视频对象 |
|
getVideoContext(id) { |
|
// #ifndef APP-PLUS-NVUE |
|
if (!id) return this.videoContexts; |
|
else |
|
for (var i = this.videoContexts.length; i--;) |
|
if (this.videoContexts[i].id == id) return this.videoContexts[i]; |
|
// #endif |
|
}, |
|
// #ifdef H5 || APP-PLUS-NVUE || MP-360 |
|
_handleHtml(html, append) { |
|
if (!append) { |
|
// 处理 tag-style 和 userAgentStyles |
|
var style = '<style>@keyframes _show{0%{opacity:0}100%{opacity:1}}img{max-width:100%}'; |
|
for (var item in cfg.userAgentStyles) |
|
style += `${item}{${cfg.userAgentStyles[item]}}`; |
|
for (item in this.tagStyle) |
|
style += `${item}{${this.tagStyle[item]}}`; |
|
style += '</style>'; |
|
html = style + html; |
|
} |
|
// 处理 rpx |
|
if (html.includes('rpx')) |
|
html = html.replace(/[0-9.]+\s*rpx/g, $ => (parseFloat($) * windowWidth / 750) + 'px'); |
|
return html; |
|
}, |
|
// #endif |
|
// #ifdef APP-PLUS-NVUE |
|
_message(e) { |
|
// 接收 web-view 消息 |
|
var d = e.detail.data[0]; |
|
switch (d.action) { |
|
case 'load': |
|
this.$emit('load'); |
|
this.height = d.height; |
|
this._text = d.text; |
|
break; |
|
case 'getTitle': |
|
if (this.autosetTitle) |
|
uni.setNavigationBarTitle({ |
|
title: d.title |
|
}) |
|
break; |
|
case 'getImgList': |
|
this.imgList.length = 0; |
|
for (var i = d.imgList.length; i--;) |
|
this.imgList.setItem(i, d.imgList[i]); |
|
break; |
|
case 'preview': |
|
var preview = true; |
|
d.img.ignore = () => preview = false; |
|
this.$emit('imgtap', d.img); |
|
if (preview) |
|
uni.previewImage({ |
|
current: d.img.i, |
|
urls: this.imgList |
|
}) |
|
break; |
|
case 'linkpress': |
|
var jump = true, |
|
href = d.href; |
|
this.$emit('linkpress', { |
|
href, |
|
ignore: () => jump = false |
|
}) |
|
if (jump && href) { |
|
if (href[0] == '#') { |
|
if (this.useAnchor) |
|
weexDom.scrollToElement(this.$refs.web, { |
|
offset: d.offset |
|
}) |
|
} else if (href.includes('://')) |
|
plus.runtime.openWeb(href); |
|
else |
|
uni.navigateTo({ |
|
url: href |
|
}) |
|
} |
|
break; |
|
case 'error': |
|
if (d.source == 'img' && cfg.errorImg) |
|
this.imgList.setItem(d.target.i, cfg.errorImg); |
|
this.$emit('error', { |
|
source: d.source, |
|
target: d.target |
|
}) |
|
break; |
|
case 'ready': |
|
this.height = d.height; |
|
if (d.ready) uni.createSelectorQuery().in(this).select('#_top').boundingClientRect().exec(res => { |
|
this.rect = res[0]; |
|
this.$emit('ready', res[0]); |
|
}) |
|
break; |
|
case 'click': |
|
this.$emit('click'); |
|
this.$emit('tap'); |
|
} |
|
}, |
|
// #endif |
|
} |
|
} |
|
</script> |
|
|
|
<style> |
|
@keyframes _show { |
|
0% { |
|
opacity: 0; |
|
} |
|
|
|
100% { |
|
opacity: 1; |
|
} |
|
} |
|
|
|
/* #ifdef MP-WEIXIN */ |
|
:host { |
|
display: block; |
|
overflow: auto; |
|
-webkit-overflow-scrolling: touch; |
|
} |
|
|
|
/* #endif */ |
|
</style>
|
|
|