3c2d7c1eea
* speed up addHoverClass on large style sheets * longer strings first to prevent accidental partial matches * can add hover class when there is a multi selector with the same prefix * tweak performance
364 lines
10 KiB
TypeScript
364 lines
10 KiB
TypeScript
import { parse } from './css';
|
|
import {
|
|
serializedNodeWithId,
|
|
NodeType,
|
|
tagMap,
|
|
elementNode,
|
|
idNodeMap,
|
|
INode,
|
|
} from './types';
|
|
import { isElement } from './utils';
|
|
|
|
const tagMap: tagMap = {
|
|
script: 'noscript',
|
|
// camel case svg element tag names
|
|
altglyph: 'altGlyph',
|
|
altglyphdef: 'altGlyphDef',
|
|
altglyphitem: 'altGlyphItem',
|
|
animatecolor: 'animateColor',
|
|
animatemotion: 'animateMotion',
|
|
animatetransform: 'animateTransform',
|
|
clippath: 'clipPath',
|
|
feblend: 'feBlend',
|
|
fecolormatrix: 'feColorMatrix',
|
|
fecomponenttransfer: 'feComponentTransfer',
|
|
fecomposite: 'feComposite',
|
|
feconvolvematrix: 'feConvolveMatrix',
|
|
fediffuselighting: 'feDiffuseLighting',
|
|
fedisplacementmap: 'feDisplacementMap',
|
|
fedistantlight: 'feDistantLight',
|
|
fedropshadow: 'feDropShadow',
|
|
feflood: 'feFlood',
|
|
fefunca: 'feFuncA',
|
|
fefuncb: 'feFuncB',
|
|
fefuncg: 'feFuncG',
|
|
fefuncr: 'feFuncR',
|
|
fegaussianblur: 'feGaussianBlur',
|
|
feimage: 'feImage',
|
|
femerge: 'feMerge',
|
|
femergenode: 'feMergeNode',
|
|
femorphology: 'feMorphology',
|
|
feoffset: 'feOffset',
|
|
fepointlight: 'fePointLight',
|
|
fespecularlighting: 'feSpecularLighting',
|
|
fespotlight: 'feSpotLight',
|
|
fetile: 'feTile',
|
|
feturbulence: 'feTurbulence',
|
|
foreignobject: 'foreignObject',
|
|
glyphref: 'glyphRef',
|
|
lineargradient: 'linearGradient',
|
|
radialgradient: 'radialGradient',
|
|
};
|
|
function getTagName(n: elementNode): string {
|
|
let tagName = tagMap[n.tagName] ? tagMap[n.tagName] : n.tagName;
|
|
if (tagName === 'link' && n.attributes._cssText) {
|
|
tagName = 'style';
|
|
}
|
|
return tagName;
|
|
}
|
|
|
|
// based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#escaping
|
|
function escapeRegExp(string: string) {
|
|
return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
|
|
}
|
|
|
|
const HOVER_SELECTOR = /([^\\]):hover/;
|
|
const HOVER_SELECTOR_GLOBAL = new RegExp(HOVER_SELECTOR, 'g');
|
|
export function addHoverClass(cssText: string): string {
|
|
const ast = parse(cssText, {
|
|
silent: true,
|
|
});
|
|
|
|
if (!ast.stylesheet) {
|
|
return cssText;
|
|
}
|
|
|
|
const selectors: string[] = [];
|
|
ast.stylesheet.rules.forEach((rule) => {
|
|
if ('selectors' in rule) {
|
|
(rule.selectors || []).forEach((selector: string) => {
|
|
if (HOVER_SELECTOR.test(selector)) {
|
|
selectors.push(selector);
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
if (selectors.length === 0) return cssText;
|
|
|
|
const selectorMatcher = new RegExp(
|
|
selectors
|
|
.filter((selector, index) => selectors.indexOf(selector) === index)
|
|
.sort((a, b) => b.length - a.length)
|
|
.map((selector) => {
|
|
return escapeRegExp(selector);
|
|
})
|
|
.join('|'),
|
|
'g',
|
|
);
|
|
|
|
return cssText.replace(selectorMatcher, (selector) => {
|
|
const newSelector = selector.replace(HOVER_SELECTOR_GLOBAL, '$1.\\:hover');
|
|
return `${selector}, ${newSelector}`;
|
|
});
|
|
}
|
|
|
|
function buildNode(
|
|
n: serializedNodeWithId,
|
|
options: {
|
|
doc: Document;
|
|
hackCss: boolean;
|
|
},
|
|
): Node | null {
|
|
const { doc, hackCss } = options;
|
|
switch (n.type) {
|
|
case NodeType.Document:
|
|
return doc.implementation.createDocument(null, '', null);
|
|
case NodeType.DocumentType:
|
|
return doc.implementation.createDocumentType(
|
|
n.name || 'html',
|
|
n.publicId,
|
|
n.systemId,
|
|
);
|
|
case NodeType.Element:
|
|
const tagName = getTagName(n);
|
|
let node: Element;
|
|
if (n.isSVG) {
|
|
node = doc.createElementNS('http://www.w3.org/2000/svg', tagName);
|
|
} else {
|
|
node = doc.createElement(tagName);
|
|
}
|
|
for (const name in n.attributes) {
|
|
if (!n.attributes.hasOwnProperty(name)) {
|
|
continue;
|
|
}
|
|
let value = n.attributes[name];
|
|
value =
|
|
typeof value === 'boolean' || typeof value === 'number' ? '' : value;
|
|
// attribute names start with rr_ are internal attributes added by rrweb
|
|
if (!name.startsWith('rr_')) {
|
|
const isTextarea = tagName === 'textarea' && name === 'value';
|
|
const isRemoteOrDynamicCss =
|
|
tagName === 'style' && name === '_cssText';
|
|
if (isRemoteOrDynamicCss && hackCss) {
|
|
value = addHoverClass(value);
|
|
}
|
|
if (isTextarea || isRemoteOrDynamicCss) {
|
|
const child = doc.createTextNode(value);
|
|
// https://github.com/rrweb-io/rrweb/issues/112
|
|
for (const c of Array.from(node.childNodes)) {
|
|
if (c.nodeType === node.TEXT_NODE) {
|
|
node.removeChild(c);
|
|
}
|
|
}
|
|
node.appendChild(child);
|
|
continue;
|
|
}
|
|
if (tagName === 'iframe' && name === 'src') {
|
|
continue;
|
|
}
|
|
try {
|
|
if (n.isSVG && name === 'xlink:href') {
|
|
node.setAttributeNS('http://www.w3.org/1999/xlink', name, value);
|
|
} else if (
|
|
name === 'onload' ||
|
|
name === 'onclick' ||
|
|
name.substring(0, 7) === 'onmouse'
|
|
) {
|
|
// Rename some of the more common atttributes from https://www.w3schools.com/tags/ref_eventattributes.asp
|
|
// as setting them triggers a console.error (which shows up despite the try/catch)
|
|
// Assumption: these attributes are not used to css
|
|
node.setAttribute('_' + name, value);
|
|
} else {
|
|
node.setAttribute(name, value);
|
|
}
|
|
} catch (error) {
|
|
// skip invalid attribute
|
|
}
|
|
} else {
|
|
// handle internal attributes
|
|
if (tagName === 'canvas' && name === 'rr_dataURL') {
|
|
const image = document.createElement('img');
|
|
image.src = value;
|
|
image.onload = () => {
|
|
const ctx = (node as HTMLCanvasElement).getContext('2d');
|
|
if (ctx) {
|
|
ctx.drawImage(image, 0, 0, image.width, image.height);
|
|
}
|
|
};
|
|
}
|
|
if (name === 'rr_width') {
|
|
(node as HTMLElement).style.width = value;
|
|
}
|
|
if (name === 'rr_height') {
|
|
(node as HTMLElement).style.height = value;
|
|
}
|
|
if (name === 'rr_mediaState') {
|
|
switch (value) {
|
|
case 'played':
|
|
(node as HTMLMediaElement).play();
|
|
case 'paused':
|
|
(node as HTMLMediaElement).pause();
|
|
break;
|
|
default:
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (n.isShadowHost) {
|
|
/**
|
|
* Since node is newly rebuilt, it should be a normal element
|
|
* without shadowRoot.
|
|
* But if there are some weird situations that has defined
|
|
* custom element in the scope before we rebuild node, it may
|
|
* register the shadowRoot earlier.
|
|
* The logic in the 'else' block is just a try-my-best solution
|
|
* for the corner case, please let we know if it is wrong and
|
|
* we can remove it.
|
|
*/
|
|
if (!node.shadowRoot) {
|
|
node.attachShadow({ mode: 'open' });
|
|
} else {
|
|
while (node.shadowRoot.firstChild) {
|
|
node.shadowRoot.removeChild(node.shadowRoot.firstChild);
|
|
}
|
|
}
|
|
}
|
|
return node;
|
|
case NodeType.Text:
|
|
return doc.createTextNode(
|
|
n.isStyle && hackCss ? addHoverClass(n.textContent) : n.textContent,
|
|
);
|
|
case NodeType.CDATA:
|
|
return doc.createCDATASection(n.textContent);
|
|
case NodeType.Comment:
|
|
return doc.createComment(n.textContent);
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
|
|
export function buildNodeWithSN(
|
|
n: serializedNodeWithId,
|
|
options: {
|
|
doc: Document;
|
|
map: idNodeMap;
|
|
skipChild?: boolean;
|
|
hackCss: boolean;
|
|
afterAppend?: (n: INode) => unknown;
|
|
},
|
|
): INode | null {
|
|
const { doc, map, skipChild = false, hackCss = true, afterAppend } = options;
|
|
let node = buildNode(n, { doc, hackCss });
|
|
if (!node) {
|
|
return null;
|
|
}
|
|
if (n.rootId) {
|
|
console.assert(
|
|
((map[n.rootId] as unknown) as Document) === doc,
|
|
'Target document should has the same root id.',
|
|
);
|
|
}
|
|
// use target document as root document
|
|
if (n.type === NodeType.Document) {
|
|
// close before open to make sure document was closed
|
|
doc.close();
|
|
doc.open();
|
|
node = doc;
|
|
}
|
|
|
|
(node as INode).__sn = n;
|
|
map[n.id] = node as INode;
|
|
|
|
if (
|
|
(n.type === NodeType.Document || n.type === NodeType.Element) &&
|
|
!skipChild
|
|
) {
|
|
for (const childN of n.childNodes) {
|
|
const childNode = buildNodeWithSN(childN, {
|
|
doc,
|
|
map,
|
|
skipChild: false,
|
|
hackCss,
|
|
afterAppend,
|
|
});
|
|
if (!childNode) {
|
|
console.warn('Failed to rebuild', childN);
|
|
continue;
|
|
}
|
|
|
|
if (childN.isShadow && isElement(node) && node.shadowRoot) {
|
|
node.shadowRoot.appendChild(childNode);
|
|
} else {
|
|
node.appendChild(childNode);
|
|
}
|
|
if (afterAppend) {
|
|
afterAppend(childNode);
|
|
}
|
|
}
|
|
}
|
|
|
|
return node as INode;
|
|
}
|
|
|
|
function visit(idNodeMap: idNodeMap, onVisit: (node: INode) => void) {
|
|
function walk(node: INode) {
|
|
onVisit(node);
|
|
}
|
|
|
|
for (const key in idNodeMap) {
|
|
if (idNodeMap[key]) {
|
|
walk(idNodeMap[key]);
|
|
}
|
|
}
|
|
}
|
|
|
|
function handleScroll(node: INode) {
|
|
const n = node.__sn;
|
|
if (n.type !== NodeType.Element) {
|
|
return;
|
|
}
|
|
const el = (node as Node) as HTMLElement;
|
|
for (const name in n.attributes) {
|
|
if (!(n.attributes.hasOwnProperty(name) && name.startsWith('rr_'))) {
|
|
continue;
|
|
}
|
|
const value = n.attributes[name];
|
|
if (name === 'rr_scrollLeft') {
|
|
el.scrollLeft = value as number;
|
|
}
|
|
if (name === 'rr_scrollTop') {
|
|
el.scrollTop = value as number;
|
|
}
|
|
}
|
|
}
|
|
|
|
function rebuild(
|
|
n: serializedNodeWithId,
|
|
options: {
|
|
doc: Document;
|
|
onVisit?: (node: INode) => unknown;
|
|
hackCss?: boolean;
|
|
afterAppend?: (n: INode) => unknown;
|
|
},
|
|
): [Node | null, idNodeMap] {
|
|
const { doc, onVisit, hackCss = true, afterAppend } = options;
|
|
const idNodeMap: idNodeMap = {};
|
|
const node = buildNodeWithSN(n, {
|
|
doc,
|
|
map: idNodeMap,
|
|
skipChild: false,
|
|
hackCss,
|
|
afterAppend,
|
|
});
|
|
visit(idNodeMap, (visitedNode) => {
|
|
if (onVisit) {
|
|
onVisit(visitedNode);
|
|
}
|
|
handleScroll(visitedNode);
|
|
});
|
|
return [node, idNodeMap];
|
|
}
|
|
|
|
export default rebuild;
|