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util.ts
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util.ts
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/**
* @license
* Copyright 2016 Google Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
import {default as createFocusTrap, FocusTrap, Options} from 'focus-trap';
export type MDCDrawerFocusTrapFactory = (
element: HTMLElement | string,
userOptions?: Options,
) => FocusTrap;
export function createFocusTrapInstance(
surfaceEl: HTMLElement,
focusTrapFactory: MDCDrawerFocusTrapFactory = createFocusTrap as unknown as MDCDrawerFocusTrapFactory,
): FocusTrap {
return focusTrapFactory(surfaceEl, {
clickOutsideDeactivates: true, // Allow handling of scrim clicks.
escapeDeactivates: false, // Foundation handles ESC key.
initialFocus: undefined, // Component handles focusing on active nav item.
returnFocusOnDeactivate: false, // Component handles restoring focus.
});
}