35 lines
1.0 KiB
JavaScript
35 lines
1.0 KiB
JavaScript
import { noChange } from '../lit-html.js';
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import { directive, Directive, PartType } from '../directive.js';
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/**
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* @license
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* Copyright 2020 Google LLC
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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class TemplateContentDirective extends Directive {
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constructor(partInfo) {
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super(partInfo);
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if (partInfo.type !== PartType.CHILD) {
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throw new Error('templateContent can only be used in child bindings');
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}
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}
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render(template) {
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if (this._previousTemplate === template) {
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return noChange;
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}
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this._previousTemplate = template;
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return document.importNode(template.content, true);
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}
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}
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/**
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* Renders the content of a template element as HTML.
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*
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* Note, the template should be developer controlled and not user controlled.
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* Rendering a user-controlled template with this directive
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* could lead to cross-site-scripting vulnerabilities.
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*/
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const templateContent = directive(TemplateContentDirective);
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export { templateContent };
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//# sourceMappingURL=template-content.js.map
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