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Copy pathcanIUse.ts
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58 lines (50 loc) · 2.04 KB
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as browser from 'vs/base/browser/browser';
import * as platform from 'vs/base/common/platform';
export const enum KeyboardSupport {
Always,
FullScreen,
None
}
/**
* Browser feature we can support in current platform, browser and environment.
*/
export const BrowserFeatures = {
clipboard: {
writeText: (
platform.isNative
|| (document.queryCommandSupported && document.queryCommandSupported('copy'))
|| !!(navigator && navigator.clipboard && navigator.clipboard.writeText)
),
readText: (
platform.isNative
|| !!(navigator && navigator.clipboard && navigator.clipboard.readText)
),
richText: (() => {
if (browser.isEdge) {
let index = navigator.userAgent.indexOf('Edge/');
let version = parseInt(navigator.userAgent.substring(index + 5, navigator.userAgent.indexOf('.', index)), 10);
if (!version || (version >= 12 && version <= 16)) {
return false;
}
}
return true;
})()
},
keyboard: (() => {
if (platform.isNative || browser.isStandalone) {
return KeyboardSupport.Always;
}
if ((<any>navigator).keyboard || browser.isSafari) {
return KeyboardSupport.FullScreen;
}
return KeyboardSupport.None;
})(),
// 'ontouchstart' in window always evaluates to true with typescript's modern typings. This causes `window` to be
// `never` later in `window.navigator`. That's why we need the explicit `window as Window` cast
touch: 'ontouchstart' in window || navigator.maxTouchPoints > 0 || (window as Window).navigator.msMaxTouchPoints > 0,
pointerEvents: window.PointerEvent && ('ontouchstart' in window || (window as Window).navigator.maxTouchPoints > 0 || navigator.maxTouchPoints > 0 || (window as Window).navigator.msMaxTouchPoints > 0)
};