49 lines
1.3 KiB
JavaScript
49 lines
1.3 KiB
JavaScript
if (typeof window.KeyboardEvent !== 'function') {
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// e.g. is IE and needs "polyfill"
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const KeyboardEvent = (event, _params) => {
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// current spec for it https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/KeyboardEvent
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const params = {
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bubbles: false,
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cancelable: false,
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view: document.defaultView,
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key: false,
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location: false,
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ctrlKey: false,
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shiftKey: false,
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altKey: false,
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metaKey: false,
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repeat: false,
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..._params,
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};
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const modifiersListArray = [];
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if (params.ctrlKey) {
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modifiersListArray.push('Control');
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}
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if (params.shiftKey) {
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modifiersListArray.push('Shift');
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}
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if (params.altKey) {
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modifiersListArray.push('Alt');
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}
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if (params.metaKey) {
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modifiersListArray.push('Meta');
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}
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const ev = document.createEvent('KeyboardEvent');
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// IE Spec for it https://technet.microsoft.com/en-us/windows/ff975297(v=vs.60)
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ev.initKeyboardEvent(
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event,
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params.bubbles,
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params.cancelable,
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params.view,
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params.key,
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params.location,
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modifiersListArray.join(' '),
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params.repeat ? 1 : 0,
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params.locale,
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);
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return ev;
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};
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KeyboardEvent.prototype = window.Event.prototype;
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window.KeyboardEvent = KeyboardEvent;
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}
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