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68 lines
2.5 KiB
68 lines
2.5 KiB
/**
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* Copyright 2018 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the 'License');
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an 'AS IS' BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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module.exports = function install(hostWindow) {
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const ctrlOrCmdCodes = new Set(
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['KeyD', 'KeyE', 'KeyD', 'KeyG', 'KeyN', 'KeyO', 'KeyP', 'KeyQ', 'KeyR', 'KeyS',
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'KeyT', 'KeyW', 'KeyY', 'Tab', 'PageUp', 'PageDown', 'F4']);
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const cmdCodes = new Set(['BracketLeft', 'BracketRight', 'Comma']);
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const cmdOptionCodes = new Set(['ArrowLeft', 'ArrowRight', 'KeyB']);
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const ctrlShiftCodes = new Set(['KeyQ', 'KeyW']);
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const altCodes = new Set(['Home', 'ArrowLeft', 'ArrowRight', 'F4']);
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function preventDefaultShortcuts(event) {
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let prevent = false;
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if (navigator.userAgent.match(/Mac OS X/)) {
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if (event.metaKey) {
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if (event.keyCode > 48 && event.keyCode <= 57) // 1-9
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prevent = true;
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if (ctrlOrCmdCodes.has(event.code) || cmdCodes.has(event.code))
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prevent = true;
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if (event.shiftKey && cmdOptionCodes.has(event.code))
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prevent = true;
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if (event.code === 'ArrowLeft' || event.code === 'ArrowRight') {
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if (!event.contentEditable && event.target.nodeName !== 'INPUT' && event.target.nodeName !== 'TEXTAREA')
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prevent = true;
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}
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}
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} else {
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if (event.code === 'F4')
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prevent = true;
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if (event.ctrlKey) {
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if (event.keyCode > 48 && event.keyCode <= 57) // 1-9
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prevent = true;
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if (ctrlOrCmdCodes.has(event.code))
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prevent = true;
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if (event.shiftKey && ctrlShiftCodes.has(event.code))
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prevent = true;
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}
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if (event.altKey && altCodes.has(event.code))
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prevent = true;
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}
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if (prevent)
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event.preventDefault();
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}
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document.addEventListener('keydown', preventDefaultShortcuts, false);
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document.addEventListener('keydown', event => {
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if ((event.key === 'q' || event.key === 'Q') && (event.metaKey || event.ctrlKey)) {
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hostWindow.closeBrowser();
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event.preventDefault();
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}
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});
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};
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