38 lines
1.6 KiB
TypeScript
38 lines
1.6 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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// This is intended to fix re-resizer because of its unguarded `instanceof TouchEvent` checks.
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export function polyfillTouchEvent() {
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// Firefox doesn't have touch events without touch devices being present, so create a fake
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// one we can rely on lying about.
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if (!window.TouchEvent) {
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// We have no intention of actually using this, so just lie.
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window.TouchEvent = class TouchEvent extends UIEvent {
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public get altKey(): boolean { return false; }
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public get changedTouches(): any { return []; }
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public get ctrlKey(): boolean { return false; }
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public get metaKey(): boolean { return false; }
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public get shiftKey(): boolean { return false; }
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public get targetTouches(): any { return []; }
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public get touches(): any { return []; }
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public get rotation(): number { return 0.0; }
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public get scale(): number { return 0.0; }
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constructor(eventType: string, params?: any) {
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super(eventType, params);
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}
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};
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}
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}
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