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