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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
export class SidebarPage extends MozLitElement {
constructor() {
super();
this.clearDocument = this.clearDocument.bind(this);
}
connectedCallback() {
super.connectedCallback();
this.ownerGlobal.addEventListener("beforeunload", this.clearDocument);
}
disconnectedCallback() {
super.disconnectedCallback();
this.ownerGlobal.removeEventListener("beforeunload", this.clearDocument);
}
/**
* Clear out the document so the disconnectedCallback() will trigger properly
* and all of the custom elements can cleanup.
*/
clearDocument() {
this.ownerGlobal.document.body.textContent = "";
}
/**
* The common stylesheet for all sidebar pages.
*
* @returns {TemplateResult}
*/
stylesheet() {
return html`
<link
rel="stylesheet"
/>
`;
}
}