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