107 lines
2.6 KiB
JavaScript
107 lines
2.6 KiB
JavaScript
/**
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Attributes:
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@property {string} name - The name of the icon, takes precedence over the path
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@property {string} path - The path of the icon file
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*/
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export class DotDungeonIcon extends HTMLElement {
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static elementName = `dd-icon`;
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static formAssociated = false;
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#shadow;
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static #styles = ``;
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static _cache = new Map();
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#style;
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#container;
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_name;
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_path;
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constructor() {
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super();
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this.#shadow = this.attachShadow({ mode: `open`, delegatesFocus: true });
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if (DotDungeonIcon.#styles) this.#embedStyles();
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this.#container = document.createElement(`div`);
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this.#shadow.appendChild(this.#container);
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};
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async connectedCallback() {
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this._name = this.getAttribute(`name`);
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this._path = this.getAttribute(`path`);
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/*
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This converts all of the double-dash prefixed properties on the element to
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CSS variables so that they don't all need to be provided by doing style=""
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*/
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for (const attrVar of this.attributes) {
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if (attrVar.name?.startsWith(`var:`)) {
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const prop = attrVar.name.replace(`var:`, ``);
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this.style.setProperty(`--` + prop, attrVar.value);
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};
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};
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/*
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Style fetching if we haven't gotten them yet
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*/
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if (!DotDungeonIcon.#styles) {
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fetch(`./systems/dotdungeon/.styles/v3/components/icon.css`)
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.then(r => r.text())
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.then(t => {
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DotDungeonIcon.#styles = t;
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this.#embedStyles();
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});
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};
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/*
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Try to retrieve the icon if it isn't present, try the path then default to
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the slot content, as then we can have a default per-icon usage
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*/
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let content;
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// TODO: Make name request
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if (this._name) {
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content = await this.#getIcon(`./systems/dotdungeon/assets/${this._name}.svg`);
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};
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// TODO: make path request
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if (this._path && !content) {
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content = await this.#getIcon(this._path);
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};
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// TODO: insert content into DOM
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if (content) {
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this.#container.appendChild(content);
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};
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};
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#embedStyles() {
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this.#style = document.createElement(`style`);
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this.#style.innerHTML = DotDungeonIcon.#styles;
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this.#shadow.appendChild(this.#style);
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};
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async #getIcon(path) {
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// Cache hit!
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if (DotDungeonIcon._cache.has(path)) {
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console.debug(`.dungeon | Icon ${path} cache hit`);
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return DotDungeonIcon._cache.get(path);
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};
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const r = await fetch(path);
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switch (r.status) {
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case 200:
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case 201:
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break;
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default:
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console.error(`.dungeon | Failed to fetch icon: ${path}`);
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return;
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};
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console.debug(`.dungeon | Adding icon ${path} to the cache`);
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const temp = document.createElement(`div`);
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temp.innerHTML = await r.text();
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const svg = temp.querySelector(`svg`);
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DotDungeonIcon._cache.set(path, svg);
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return svg;
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};
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};
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