104 lines
3.5 KiB
TypeScript
104 lines
3.5 KiB
TypeScript
declare var document: Document;
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export function serializeFunction(rootNode: Node) {
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const uuidv4 = () => {
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return 'unixxxxxxxxxxx'.replace(/[xy]/g, (c) => {
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const r = (Math.random() * 16) | 0;
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const v = c === 'x' ? r : (r & 0x3) | 0x8;
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return v.toString(16);
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});
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};
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const prependCss = (uuidID: string, styleTemplate: string) => {
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if (!styleTemplate.includes(':host')) {
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styleTemplate = `:host {}\n\n${styleTemplate}`;
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}
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styleTemplate = styleTemplate.replace(/}[ \t\n]+\./g, `}\n\n.${uuidID} .`);
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styleTemplate = styleTemplate.replace(/}[ \t\n]+\*/g, `}\n\n.${uuidID} *`);
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styleTemplate = styleTemplate.replace(/\(\[/g, `[`);
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styleTemplate = styleTemplate.replace(/\]\)/g, `]`);
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styleTemplate = styleTemplate.replace(/:host/g, `.${uuidID}`);
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styleTemplate = styleTemplate.replace(/:host/g, `.${uuidID}`);
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styleTemplate = styleTemplate.replace(/{[ \t\n]+\./g, `{\n\n.${uuidID} .`);
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styleTemplate = styleTemplate.replace(/}[ \t\n]+img/g, `}\n\n.${uuidID} img`);
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styleTemplate = styleTemplate.replace(/}[ \t\n]+div/g, `}\n\n.${uuidID} div`);
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return styleTemplate;
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};
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const loopProtection: any[] = [];
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function serializeNode(nodeArg: HTMLElement | any, logThis = false) {
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if (loopProtection.includes(nodeArg)) {
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return;
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}
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loopProtection.push(nodeArg);
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// console.log(nodeArg.nodeName);
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if (nodeArg.shadowRoot) {
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nodeArg.setAttribute('smartssr', 'yes');
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// lets handle the current node
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const nodeUUID = uuidv4();
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nodeArg.classList.add(nodeUUID);
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// find all slots
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const slots = nodeArg.shadowRoot.querySelectorAll('slot');
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// handle slot element
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const slotsForMove: HTMLSlotElement[] = [];
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slots.forEach((slot: any) => {
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slotsForMove.push(slot);
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});
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for (const slot of slotsForMove) {
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const slottedLightNodesForMove: any[] = [];
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slot.assignedNodes().forEach((lightNode) => slottedLightNodesForMove.push(lightNode));
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slottedLightNodesForMove.forEach((lightNode) =>
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slot.parentNode.insertBefore(lightNode, slot)
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);
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}
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// lets modify the css
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const childNodes = nodeArg.shadowRoot.childNodes;
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// tslint:disable-next-line: prefer-for-of
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const noteForAppending: HTMLElement[] = [];
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// lets care about static css first
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if (
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(nodeArg.constructor as any).styles &&
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(nodeArg.constructor as any).styles instanceof Array
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) {
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for (const objectArg of (nodeArg.constructor as any).styles) {
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const styleTag = document.createElement('style');
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styleTag.textContent = prependCss(nodeUUID, objectArg.cssText);
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noteForAppending.push(styleTag);
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}
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}
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childNodes.forEach((childNode: ChildNode) => {
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if (childNode instanceof HTMLElement) {
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if (childNode.tagName === 'STYLE') {
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childNode.textContent = prependCss(nodeUUID, childNode.textContent);
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} else {
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serializeNode(childNode, logThis);
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}
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noteForAppending.push(childNode);
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}
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});
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while (nodeArg.firstChild) {
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nodeArg.removeChild(nodeArg.firstChild);
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}
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noteForAppending.forEach((childNode) => {
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nodeArg.append(childNode);
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});
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} else {
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nodeArg.childNodes.forEach((nodeArg2: any) => {
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serializeNode(nodeArg2, logThis);
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});
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}
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}
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rootNode.childNodes.forEach((nodeArg) => {
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serializeNode(nodeArg);
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});
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}
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