50 lines
1.8 KiB
TypeScript
50 lines
1.8 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import * as browser from 'vs/base/browser/browser';
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import { mainWindow } from 'vs/base/browser/window';
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import * as platform from 'vs/base/common/platform';
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export const enum KeyboardSupport {
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Always,
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FullScreen,
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None
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}
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const safeNavigator = typeof navigator === 'object' ? navigator : {} as { [key: string]: any };
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/**
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* Browser feature we can support in current platform, browser and environment.
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*/
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export const BrowserFeatures = {
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clipboard: {
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writeText: (
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platform.isNative
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|| (document.queryCommandSupported && document.queryCommandSupported('copy'))
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|| !!(safeNavigator && safeNavigator.clipboard && safeNavigator.clipboard.writeText)
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),
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readText: (
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platform.isNative
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|| !!(safeNavigator && safeNavigator.clipboard && safeNavigator.clipboard.readText)
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)
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},
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keyboard: (() => {
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if (platform.isNative || browser.isStandalone()) {
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return KeyboardSupport.Always;
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}
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if ((<any>safeNavigator).keyboard || browser.isSafari) {
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return KeyboardSupport.FullScreen;
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}
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return KeyboardSupport.None;
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})(),
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// 'ontouchstart' in window always evaluates to true with typescript's modern typings. This causes `window` to be
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// `never` later in `window.navigator`. That's why we need the explicit `window as Window` cast
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touch: 'ontouchstart' in mainWindow || safeNavigator.maxTouchPoints > 0,
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pointerEvents: mainWindow.PointerEvent && ('ontouchstart' in mainWindow || navigator.maxTouchPoints > 0)
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};
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