39 lines
1.1 KiB
Plaintext
39 lines
1.1 KiB
Plaintext
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule KeyBindingUtil
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* @format
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* @flow
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*/
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'use strict';
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var UserAgent = require('fbjs/lib/UserAgent');
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var isOSX = UserAgent.isPlatform('Mac OS X');
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var KeyBindingUtil = {
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/**
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* Check whether the ctrlKey modifier is *not* being used in conjunction with
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* the altKey modifier. If they are combined, the result is an `altGraph`
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* key modifier, which should not be handled by this set of key bindings.
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*/
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isCtrlKeyCommand: function (e: SyntheticKeyboardEvent<>): boolean {
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return !!e.ctrlKey && !e.altKey;
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},
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isOptionKeyCommand: function (e: SyntheticKeyboardEvent<>): boolean {
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return isOSX && e.altKey;
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},
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hasCommandModifier: function (e: SyntheticKeyboardEvent<>): boolean {
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return isOSX ? !!e.metaKey && !e.altKey : KeyBindingUtil.isCtrlKeyCommand(e);
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}
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};
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module.exports = KeyBindingUtil; |