vscode/extensions/simple-browser/preview-src/events.ts
Matt Bierner 3ed300eb9d
Add simple browser extension (#109276)
* Add support for TS's Hierarchical refactorings API

https://github.com/microsoft/TypeScript/pull/41975

* Add simple browser extension

This change adds a new 'simple browser' extension. This extension uses a webview to render webpages directly in VS Code. We plan on using it for optionally previewing local servers in both desktop and codespaces

The browser itself has a number of limitations due to the security around iframes:

- It traps keyboard focus
- We can't detect if a page fails to load
- We can't track the current url of the iframe

* Add experimental alert when the iframe is focused

* Disable events on focus warning

* Hooking up simple browser to opener
2021-01-04 19:06:53 -08:00

12 lines
573 B
TypeScript

/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
export function onceDocumentLoaded(f: () => void) {
if (document.readyState === 'loading' || document.readyState as string === 'uninitialized') {
document.addEventListener('DOMContentLoaded', f);
} else {
f();
}
}