40 lines
1.4 KiB
TypeScript
40 lines
1.4 KiB
TypeScript
/**
|
|
* Copyright (c) Microsoft Corporation.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
export class Utils {
|
|
parentElementOrShadowHost(element: Element): Element | undefined {
|
|
if (element.parentElement)
|
|
return element.parentElement;
|
|
if (!element.parentNode)
|
|
return;
|
|
if (element.parentNode.nodeType === Node.DOCUMENT_FRAGMENT_NODE && (element.parentNode as ShadowRoot).host)
|
|
return (element.parentNode as ShadowRoot).host;
|
|
}
|
|
|
|
deepElementFromPoint(document: Document, x: number, y: number): Element | undefined {
|
|
let container: Document | ShadowRoot | null = document;
|
|
let element: Element | undefined;
|
|
while (container) {
|
|
const innerElement = container.elementFromPoint(x, y) as Element | undefined;
|
|
if (!innerElement || element === innerElement)
|
|
break;
|
|
element = innerElement;
|
|
container = element.shadowRoot;
|
|
}
|
|
return element;
|
|
}
|
|
}
|