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Create web component util
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commit
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// biome-ignore lint/correctness/noUndeclaredDependencies: shipped by easymde
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// biome-ignore lint/correctness/noUndeclaredDependencies: shipped by easymde
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import "codemirror/lib/codemirror.css";
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import "codemirror/lib/codemirror.css";
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import "easymde/src/css/easymde.css";
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import "easymde/src/css/easymde.css";
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import { InheritedComponent } from "#core:utils/web-components";
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// biome-ignore lint/correctness/noUndeclaredDependencies: Imported by EasyMDE
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// biome-ignore lint/correctness/noUndeclaredDependencies: Imported by EasyMDE
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import type CodeMirror from "codemirror";
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import type CodeMirror from "codemirror";
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// biome-ignore lint/style/useNamingConvention: This is how they called their namespace
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// biome-ignore lint/style/useNamingConvention: This is how they called their namespace
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@ -182,23 +183,10 @@ const loadEasyMde = (textarea: HTMLTextAreaElement) => {
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}
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}
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};
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};
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class MarkdownInput extends HTMLElement {
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class MarkdownInput extends InheritedComponent<"textarea"> {
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widget: HTMLTextAreaElement;
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constructor() {
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constructor() {
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super();
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super("textarea");
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this.widget = document.createElement("textarea");
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const attributes: Attr[] = []; // We need to make a copy to delete while iterating
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for (const attr of this.attributes) {
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attributes.push(attr);
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}
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for (const attr of attributes) {
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this.removeAttributeNode(attr);
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this.widget.setAttributeNode(attr);
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}
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this.appendChild(this.widget);
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window.addEventListener("DOMContentLoaded", () => loadEasyMde(this.widget));
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window.addEventListener("DOMContentLoaded", () => loadEasyMde(this.widget));
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}
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}
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}
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}
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31
core/static/webpack/utils/web-components.ts
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31
core/static/webpack/utils/web-components.ts
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/**
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* Safari doesn't support inheriting from HTML tags on web components
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* The technique is to:
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* create a new web component
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* create the desired type inside
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* pass all attributes to the child component
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* store is at as a widget inside the parent
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*
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* To use this, you must use the tag name twice, once for creating the class
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* and the second time while calling super to pass it to the constructor
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**/
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export class InheritedComponent<
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K extends keyof HTMLElementTagNameMap,
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> extends HTMLElement {
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widget: HTMLElementTagNameMap[K];
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constructor(tagName: K) {
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super();
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this.widget = document.createElement(tagName);
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const attributes: Attr[] = []; // We need to make a copy to delete while iterating
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for (const attr of this.attributes) {
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attributes.push(attr);
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}
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for (const attr of attributes) {
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this.removeAttributeNode(attr);
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this.widget.setAttributeNode(attr);
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}
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this.appendChild(this.widget);
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}
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}
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