260 lines
8.7 KiB
TypeScript
260 lines
8.7 KiB
TypeScript
import { getAppState, initAppState } from '../../main';
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export let ctrlPressed = false;
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export function setCtrl(ctrl: boolean) {
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ctrlPressed = ctrl;
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}
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// function to turn the template into reactive content "hydating" a page
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export async function hydratePage() {
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if (import.meta.env.SSR) return;
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await initAppState();
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const appState = getAppState();
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const documentBody = document.getElementById('app');
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if (!documentBody) {
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throw new Error('Fatal Error: element with id app not found');
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}
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const { renderPage } = await import('./pageRenderer');
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// eslint-disable-next-line @typescript-eslint/no-unused-vars
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const { getCookie, setCookie } = await import('../cookieManager');
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// for every item in the appState lets check for any element with the "checksum", a hex code equivalent of the item name
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Object.keys(appState.contents).forEach((e: string) => {
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if (e === undefined) return;
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// here we check for elements with the name of "data-token-<hex code of the item name>"
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const uuid = e.split('').map((c: string) => c.charCodeAt(0).toString(16).padStart(2, '0')).join('');
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const listeningElements = document.querySelectorAll(`[${'data-token-' + uuid}]`);
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listeningElements.forEach((elm) => {
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if (elm.parentElement?.getAttribute('d-once') !== null) {
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elm.parentElement?.removeAttribute('d-once');
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return;
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}
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if (elm.parentElement?.getAttribute('d-html') !== null) {
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appState.listen(e, (change: string) => elm.innerHTML = change);
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elm.parentElement?.removeAttribute('d-html');
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} else {
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appState.listen(e, (change: string) => elm.textContent = change);
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}
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});
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});
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// here we look for elements with the d-on:click attribute and on click run the function in the attribute
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const elms = documentBody.querySelectorAll('*[d-on\\3A click]');
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elms.forEach((e) => {
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const clickFunction = e.getAttribute('d-on:click');
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e.removeAttribute('d-on:click');
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if (!clickFunction) return;
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e.addEventListener('click', () => {
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eval(clickFunction);
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});
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});
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// here we determine if an element should be deleted form the DOM via the d-if directive
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const conditionalElms = document.querySelectorAll('*[d-if]');
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conditionalElms.forEach(async (e: Element) => {
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const condition = e.getAttribute('d-if');
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const siblingConditionalElms: Array<Element> = [];
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// recursively check for subsequent elements with the d-else of d-else-if attribute
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function checkForConditionSibling(elm: Element) {
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if (!elm.nextElementSibling || typeof elm.nextElementSibling == 'undefined') return;
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if (elm.nextElementSibling?.getAttribute('d-else-if') !== null) {
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siblingConditionalElms.push(elm.nextElementSibling);
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if (!elm.nextElementSibling) return;
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checkForConditionSibling(elm.nextElementSibling);
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}
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if (elm.nextElementSibling?.getAttribute('d-else') !== null) {
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siblingConditionalElms.push(elm.nextElementSibling);
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}
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}
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checkForConditionSibling(e);
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if (siblingConditionalElms == undefined) return;
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function resetHTML() {
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e.innerHTML = '<!-- d-if -->';
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for (let i = 0; i < siblingConditionalElms.length; i++) {
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const element = siblingConditionalElms[i];
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if (!element) return;
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element.innerHTML = '<!-- d-if -->';
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}
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}
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let ifStatement = `if (!!eval(condition)) {
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e.innerHTML = originalHTML
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} `;
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for (let i = 0; i < siblingConditionalElms.length; i++) {
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const element = siblingConditionalElms[i];
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if (!element) return;
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const originHTML = element.innerHTML;
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element.innerHTML = '<!-- d-if -->';
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let statementDirective = 'else';
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if (element.getAttribute('d-else-if') !== null) {
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statementDirective = 'else if';
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}
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const condition = eval('element.getAttribute(\'d-\' + statementDirective.split(\' \').join(\'-\'))');
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if (statementDirective == 'else if') {
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statementDirective = 'else if (' + condition + ')';
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}
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ifStatement = ifStatement + statementDirective + `{
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siblingConditionalElms[${i}].innerHTML = "${originHTML}"
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}`;
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}
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e.removeAttribute('d-if');
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const originalHTML = e.innerHTML;
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if (!condition || originalHTML == undefined) return;
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if (condition.includes('appState.contents.')) {
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let reactiveProp: Array<string> | string | null | undefined = /appState\.contents\.[a-zA-Z]+/.exec(condition);
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if (!reactiveProp || !reactiveProp[0]) return;
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reactiveProp = reactiveProp[0].split('.')[2];
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if (!reactiveProp) return;
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appState.listen(reactiveProp, () => {
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resetHTML();
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eval(ifStatement);
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});
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}
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eval(ifStatement);
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});
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const pointerEnterElms = document.querySelectorAll('*[d-on\\3A pointerEnter]');
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pointerEnterElms.forEach((e) => {
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const enterFunction = e.getAttribute('d-on:pointerEnter');
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e.removeAttribute('d-on:pointerEnter');
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if (!enterFunction) return;
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e.addEventListener('pointerenter', () => {
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eval(enterFunction);
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});
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});
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const pointerExitElms = document.querySelectorAll('*[d-on\\3A pointerExit]');
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pointerExitElms.forEach((e) => {
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const exitFunction = e.getAttribute('d-on:pointerExit');
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e.removeAttribute('d-on:pointerExit');
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if (!exitFunction) return;
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e.addEventListener('pointerleave', () => {
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eval(exitFunction);
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});
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});
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const mouseDownElms = document.querySelectorAll('*[d-on\\3A mouseDown]');
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mouseDownElms.forEach((e) => {
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const downFunction = e.getAttribute('d-on:mouseDown');
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e.removeAttribute('d-on:mouseDown');
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if (!downFunction) return;
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e.addEventListener('mousedown', () => {
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eval(downFunction);
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});
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});
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const mouseUpElms = document.querySelectorAll('*[d-on\\3A mouseUp]');
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mouseUpElms.forEach((e) => {
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const dupFunction = e.getAttribute('d-on:mouseUp');
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e.removeAttribute('d-on:mouseUp');
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if (!dupFunction) return;
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e.addEventListener('mouseup', () => {
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eval(dupFunction);
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});
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});
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// here we look for elements with the d-model attribute and if there is any input in the element then we update the appState item with the name
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// of the attribute value
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// example: if the user types "hello" into a text field with the d-model attribute of "text" then we update the appState item with the name "text"
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// to "hello"
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// similar to vue.js v-model attribute
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const modelElms = document.querySelectorAll('input[d-model], textarea[d-model]');
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modelElms.forEach((e: Element) => {
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const modelName = e.getAttribute('d-model');
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if (!modelName) return;
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e.addEventListener('input', (input: Event) => {
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const target = input.target as HTMLInputElement;
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appState.contents[modelName] = target.value;
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});
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});
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const headContent = document.head.innerHTML;
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const headElements = document.querySelectorAll('devto\\3A head');
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headElements.forEach((e: Element) => {
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if (e.childNodes.length == 0) return;
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e.childNodes.forEach((elm) => {
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const child = elm as Element;
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if (child.nodeType !== 1) return;
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if (!document.head.querySelectorAll(child.tagName)) return;
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const uniqueAttributes = ['content', 'href'];
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document.head.querySelectorAll(child.tagName).forEach((headEl: Element) => {
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if (headEl.attributes.length == 0) {
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headEl.remove();
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}
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for (let i = 0; i < headEl.attributes.length; i++) {
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if (!headEl.attributes.item(i)) return;
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const itemName = headEl.attributes.item(i)?.name;
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if (!itemName) return;
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if (uniqueAttributes.indexOf(itemName) == -1) {
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if (child.attributes.getNamedItem(itemName)?.nodeValue == headEl.attributes.item(i)?.nodeValue) {
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headEl.remove();
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}
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}
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}
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});
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document.head.appendChild(child);
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});
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e.remove();
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});
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document.addEventListener('router:naviagte', () => {
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document.head.innerHTML = headContent;
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}, { once: true });
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const anchorElms = document.querySelectorAll('a');
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anchorElms.forEach((e: HTMLAnchorElement) => {
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e.addEventListener('click', async (click: MouseEvent) => {
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if (!event || click.ctrlKey) return;
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const target = click.target as HTMLElement;
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event.preventDefault();
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if (!target) return;
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const url: string | null = target.getAttribute('href');
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if (!url) return;
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await renderPage(url);
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});
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});
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function hydrateKeyDown() {
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document.body.querySelectorAll('*').forEach((e) => {
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for (let i = 0; i < e.attributes.length; i++) {
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const item = e.attributes.item(i)?.name;
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if (!item) return;
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if (item.startsWith('d-on:keydown')) {
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const key = item.split('.')[1]?.toLowerCase();
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let correctedKey = '';
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if (key && key?.length > 1) {
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key.split('').forEach((e, i, arr) => {
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if (i === 0) {
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arr[i] = e.toUpperCase();
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}
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correctedKey += arr[i];
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});
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}
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e.addEventListener('keydown', (keydown) => {
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const keyboardEvent = <KeyboardEvent>keydown;
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if (keyboardEvent.key == correctedKey) {
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const itemCode = e.getAttribute(item);
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if (!itemCode) return;
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eval(itemCode);
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}
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});
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}
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}
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});
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}
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hydrateKeyDown();
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} |