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mermaid front-end rendering initialization exception handling logic o… (#1407)

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Charlie.Wei 2023-10-26 10:19:04 +08:00 committed by GitHub
parent 48b4249790
commit 985253197f
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1 changed files with 20 additions and 9 deletions
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29
web/app/components/app/chat/mermaid/index.tsx
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@ -1,6 +1,5 @@
import React, { useEffect, useRef, useState } from 'react'
import mermaid from 'mermaid'
import { t } from 'i18next'
import CryptoJS from 'crypto-js'
let mermaidAPI: any
@ -32,6 +31,14 @@ const Flowchart = React.forwardRef((props: {
const chartId = useRef(`flowchart_${CryptoJS.MD5(props.PrimitiveCode).toString()}`)
const [isRender, setIsRender] = useState(true)
const clearFlowchartCache = () => {
for (let i = localStorage.length - 1; i >= 0; --i) {
const key = localStorage.key(i)
if (key && key.startsWith('flowchart_'))
localStorage.removeItem(key)
}
}
const renderFlowchart = async (PrimitiveCode: string) => {
try {
const cachedSvg: any = localStorage.getItem(chartId.current)
@ -44,15 +51,15 @@ const Flowchart = React.forwardRef((props: {
const svgGraph = await mermaidAPI.render(chartId.current, PrimitiveCode)
// eslint-disable-next-line @typescript-eslint/no-use-before-define
const base64Svg: any = await svgToBase64(svgGraph.svg)
localStorage.setItem(chartId.current, base64Svg)
setSvgCode(base64Svg)
if (chartId.current && base64Svg)
localStorage.setItem(chartId.current, base64Svg)
}
}
catch (error) {
localStorage.clear()
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-expect-error
console.error(error.toString())
clearFlowchartCache()
// eslint-disable-next-line @typescript-eslint/no-use-before-define
handleReRender()
}
}
@ -70,7 +77,9 @@ const Flowchart = React.forwardRef((props: {
const handleReRender = () => {
setIsRender(false)
setSvgCode(null)
localStorage.removeItem(chartId.current)
if (chartId.current)
localStorage.removeItem(chartId.current)
setTimeout(() => {
setIsRender(true)
renderFlowchart(props.PrimitiveCode)
@ -90,9 +99,11 @@ const Flowchart = React.forwardRef((props: {
// @ts-expect-error
<div ref={ref}>
{
isRender && <div id={chartId.current} className="mermaid" style={style}>{svgCode && (<img src={svgCode} style={{ width: '100%', height: 'auto' }} alt="Mermaid chart" />)}</div>
isRender
&& <div id={chartId.current} className="mermaid" style={style}>
{svgCode && <img src={svgCode} style={{ width: '100%', height: 'auto' }} alt="Mermaid chart" />}
</div>
}
<button onClick={handleReRender}>{t('appApi.merMaind.rerender')}</button>
</div>
)
})