富文本消息显示大重构！！！

* 将所有的 custom element 以正确的方式重新编写
* 可以正确解析 Markdown 文本, 图片, 斜体文本元素且不会杂糅了
* 通过 DOM 操作使得所有的文本聚合在一起, 并且取消了消息自带的填充边距, 删除了原本消息内无法正常工作的 "无边框显示模式"
* 添加新的 custom-element: chat-text 和 chat-text-container

client/index.ts

@@ -9,6 +9,8 @@ import ReactDOM from 'react-dom/client'
 import './ui/custom-elements/chat-image.ts'
 import './ui/custom-elements/chat-video.ts'
 import './ui/custom-elements/chat-file.ts'
+import './ui/custom-elements/chat-text.ts'
+import './ui/custom-elements/chat-text-container.ts'
 
 import App from './ui/App.tsx'
 import AppMobile from './ui/AppMobile.tsx'

client/ui/chat/ChatFragment.tsx

@@ -29,6 +29,7 @@ import PreferenceUpdater from "../preference/PreferenceUpdater.ts"
 import SystemMessage from "./SystemMessage.tsx"
 import JoinRequestsList from "./JoinRequestsList.tsx"
 import getUrlForFileByHash from "../../getUrlForFileByHash.ts"
+import escapeHTML from "../../escapeHtml.ts"
 
 interface Args extends React.HTMLAttributes<HTMLElement> {
     target: string
@@ -38,24 +39,47 @@ interface Args extends React.HTMLAttributes<HTMLElement> {
     openUserInfoDialog: (user: User | string) => void
 }
 
+const sanitizeConfig = {
+    ALLOWED_TAGS: [
+        "chat-image",
+        "chat-video",
+        "chat-file",
+        'chat-text',
+        "chat-link",
+    ],
+    ALLOWED_ATTR: [
+        'underline',
+        'em',
+
+        'src',
+        'alt',
+        'href',
+        'name',
+    ],
+}
+
 const markedInstance = new marked.Marked({
     renderer: {
+        text({ text }) {
+            console.log('普通文字', text)
+            return `<chat-text>${escapeHTML(text)}</chat-text>`
+        },
+        em({ text }) {
+            console.log('斜体', text)
+            return `<chat-text em="true">${escapeHTML(text)}</chat-text>`
+        },
         heading({ tokens, depth: _depth }) {
             const text = this.parser.parseInline(tokens)
-            return `<span>${text}</span>`
+            return `<chat-text>${escapeHTML(text)}</chat-text>`
-        },
-        paragraph({ tokens }) {
-            const text = this.parser.parseInline(tokens)
-            return `<span>${text}</span>`
         },
         image({ text, href }) {
             const type = /^(Video|File)=.*/.exec(text)?.[1] || 'Image'
             if (/tws:\/\/file\?hash=[A-Za-z0-9]+$/.test(href)) {
                 const url = getUrlForFileByHash(/^tws:\/\/file\?hash=(.*)/.exec(href)?.[1])
                 return ({
-                    Image: `<chat-image src="${url}" alt="${text}"></chat-image>`,
+                    Image: `<chat-image src="${url}" alt="${escapeHTML(text)}"></chat-image>`,
                     Video: `<chat-video src="${url}"></chat-video>`,
-                    File: `<chat-file href="${url}" name="${/^Video|File=(.*)/.exec(text)?.[1] || 'Unnamed file'}"></chat-file>`,
+                    File: `<chat-file href="${url}" name="${escapeHTML(/^Video|File=(.*)/.exec(text)?.[1] || 'Unnamed file')}"></chat-file>`,
                 })?.[type] || ``
             }
             return ``
@@ -377,21 +401,7 @@ export default function ChatFragment({ target, showReturnButton, onReturnButtonC
                             (() => {
                                 let date = new Date(0)
                                 return messagesList.map((msg) => {
-                                    const rendeText = DOMPurify.sanitize(markedInstance.parse(msg.text) as string, {
+                                    const rendeText = DOMPurify.sanitize(markedInstance.parse(msg.text) as string, sanitizeConfig)
-                                        ALLOWED_TAGS: [
-                                            "chat-image",
-                                            "chat-video",
-                                            "chat-file",
-                                            "span",
-                                            "chat-link",
-                                        ],
-                                        ALLOWED_ATTR: [
-                                            'src',
-                                            'alt',
-                                            'href',
-                                            'name',
-                                        ],
-                                    }).replaceAll('\n', '<br>')
                                     const lastDate = date
                                     date = new Date(msg.time)
 

client/ui/chat/Message.tsx

@@ -21,6 +21,34 @@ interface Args extends React.HTMLAttributes<HTMLElement> {
     openUserInfoDialog: (user: User | string) => void
 }
 
+function prettyFlatParsedMessage(html: string) {
+    const elements = new DOMParser().parseFromString(html, 'text/html').body.children
+    let ls: Element[] = []
+    let ret = ''
+    // 第一个元素时, 不会被聚合在一起
+    let lastElementType = ''
+    function checkContinuousElement(tagName: string) {
+        if (lastElementType != tagName) {
+            if (lastElementType == 'chat-text')
+                ret += `<chat-text-container>${ls.map((v) => v.outerHTML).join('')}</chat-text-container>`
+            else
+                ret += ls.map((v) => v.outerHTML).join('')
+            ls = []
+        }
+    }
+    for (const e of elements) {
+        console.log(e)
+        // 当出现非文本元素时, 将文本聚合在一起
+        // 如果是其他类型, 虽然也执行聚合, 但是不会有外层包裹
+        checkContinuousElement(e.nodeName.toLowerCase())
+        ls.push(e)
+        lastElementType = e.nodeName.toLowerCase()
+    }
+    // 最后将剩余的转换
+    checkContinuousElement('')
+    return ret
+}
+
 export default function Message({ userId, rawData, renderHTML, message, openUserInfoDialog, ...props }: Args) {
     const isAtRight = Client.myUserProfile?.id == userId
 
@@ -44,15 +72,15 @@ export default function Message({ userId, rawData, renderHTML, message, openUser
 
     const [isDropDownOpen, setDropDownOpen] = React.useState(false)
 
-    const [isUsingFullDisplay, setIsUsingFullDisplay] = React.useState(false)
+    /* const [isUsingFullDisplay, setIsUsingFullDisplay] = React.useState(false) */
 
-    React.useEffect(() => {
+    /* React.useEffect(() => {
         const text = $(dropDownRef.current as HTMLElement).find('#msg').text().trim()
         setIsUsingFullDisplay(text == '' || (
             rawData.split("tws:\/\/file\?hash=").length == 2
             && /\<\/chat\-(file|image|video)\>(\<\/span\>)?$/.test(renderHTML.trim())
         ))
-    }, [renderHTML])
+    }, [renderHTML]) */
 
     return (
         <div
@@ -122,10 +150,11 @@ export default function Message({ userId, rawData, renderHTML, message, openUser
                     minWidth: "0%",
                     [isAtRight ? "marginRight" : "marginLeft"]: "55px",
                     marginTop: "-5px",
-                    padding: isUsingFullDisplay ? undefined : "13px",
-                    paddingTop: isUsingFullDisplay ? undefined : "14px",
                     alignSelf: isAtRight ? "flex-end" : "flex-start",
-                    backgroundColor: isUsingFullDisplay ? "inherit" : undefined
+                    // boxShadow: isUsingFullDisplay ? 'inherit' : 'var(--mdui-elevation-level1)',
+                    // padding: isUsingFullDisplay ?  undefined : "13px",
+                    // paddingTop: isUsingFullDisplay ?  undefined : "14px",
+                    // backgroundColor: isUsingFullDisplay ? "inherit" : undefined
                 }}>
                 <mdui-dialog close-on-overlay-click close-on-esc ref={messageJsonDialogRef}>
                     {
@@ -138,10 +167,12 @@ export default function Message({ userId, rawData, renderHTML, message, openUser
                         slot="trigger"
                         id="msg"
                         style={{
-                            fontSize: "94%"
+                            fontSize: "94%",
+                            display: 'flex',
+                            flexDirection: 'column',
                         }}
                         dangerouslySetInnerHTML={{
-                            __html: renderHTML
+                            __html: prettyFlatParsedMessage(renderHTML)
                         }} />
                     <mdui-menu onClick={(e) => {
                         e.stopPropagation()

client/ui/custom-elements/chat-text-container.ts

@@ -0,0 +1,16 @@
+customElements.define('chat-text-container', class extends HTMLElement {
+    declare container: HTMLDivElement
+    constructor() {
+        super()
+
+        this.attachShadow({ mode: 'open' })
+    }
+    connectedCallback() {
+        const shadow = this.shadowRoot as ShadowRoot
+        
+        this.container = document.createElement('div')
+        this.container.style.padding = '13px'
+        shadow.appendChild(this.container)
+        this.container.innerHTML = this.innerHTML
+    }
+})

client/ui/custom-elements/chat-text.ts

@@ -0,0 +1,29 @@
+import { $ } from 'mdui'
+
+customElements.define('chat-text', class extends HTMLElement {
+    declare span: HTMLSpanElement
+    static observedAttributes = ['underline', 'em']
+    constructor() {
+        super()
+
+        this.attachShadow({ mode: 'open' })
+    }
+    connectedCallback() {
+        const shadow = this.shadowRoot as ShadowRoot
+        
+        this.span = document.createElement('span')
+        this.span.style.whiteSpace = 'pre-wrap'
+        this.span.style.fontSynthesis = 'style weight'
+        shadow.appendChild(this.span)
+
+        this.update()
+    }
+    attributeChangedCallback(_name: string, _oldValue: unknown, _newValue: unknown) {
+        this.update()
+    }
+    update() {
+        this.span.textContent = this.textContent
+        this.span.style.textDecoration = $(this).attr('underline') ? 'underline' : ''
+        this.span.style.fontStyle = $(this).attr('em') ? 'italic' : ''
+    }
+})