web: fetch custom.css via fetch and add stylesheet (#4804)
* web: fetch custom.css via fetch and add stylesheet Signed-off-by: Jens Langhammer <jens@goauthentik.io> * don't hardcode path Signed-off-by: Jens Langhammer <jens@goauthentik.io> --------- Signed-off-by: Jens Langhammer <jens@goauthentik.io>
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@ -16,7 +16,7 @@
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{% block head_before %}
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{% endblock %}
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<link rel="stylesheet" type="text/css" href="{% static 'dist/authentik.css' %}">
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<link rel="stylesheet" type="text/css" href="{% static 'dist/custom.css' %}">
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<link rel="stylesheet" type="text/css" href="{% static 'dist/custom.css' %}" data-inject>
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<script src="{% static 'dist/poly.js' %}" type="module"></script>
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{% block head %}
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{% endblock %}
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@ -2,10 +2,46 @@ import { EVENT_LOCALE_CHANGE } from "@goauthentik/common/constants";
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import { LitElement } from "lit";
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let css: Promise<string[]> | undefined;
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function fetchCustomCSS(): Promise<string[]> {
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if (!css) {
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css = Promise.all(
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Array.of(...document.head.querySelectorAll<HTMLLinkElement>("link[data-inject]")).map(
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(link) => {
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return fetch(link.href)
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.then((res) => {
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return res.text();
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})
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.finally(() => {
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return "";
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});
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},
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),
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);
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}
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return css;
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}
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export class AKElement extends LitElement {
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constructor() {
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super();
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this.addEventListener(EVENT_LOCALE_CHANGE, this._handleLocaleChange);
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fetchCustomCSS().then((sheets) => {
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sheets.map((css) => {
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if (css === "") {
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return;
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}
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new CSSStyleSheet().replace(css).then((sheet) => {
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if (!this.shadowRoot) {
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return;
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}
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this.shadowRoot.adoptedStyleSheets = [
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...this.shadowRoot.adoptedStyleSheets,
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sheet,
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];
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});
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});
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});
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}
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disconnectedCallback() {
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