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22 lines
648 B
JavaScript
22 lines
648 B
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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function isLeftClick(event, allowKeyModifiers) {
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return event.button === 0 && (allowKeyModifiers || noKeyModifiers(event));
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}
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function noKeyModifiers(event) {
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return !event.ctrlKey && !event.shiftKey && !event.altKey && !event.metaKey;
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}
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function cancelEvent(event) {
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event.stopPropagation();
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event.preventDefault();
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}
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// Exports from this module
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exports.isLeftClick = isLeftClick;
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exports.cancelEvent = cancelEvent;
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