/**
* Copyright 2017-2020 Plexus Interop Deutsche Bank AG
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*/
import { Logger, LoggerFactory } from '../../logger';
export class DomUtils {
private static log: Logger = LoggerFactory.getLogger('DomUtils');
public static iFrameLoaded(iFrameElement: HTMLIFrameElement): Promise<HTMLIFrameElement> {
return new Promise((resolve) => {
iFrameElement.addEventListener('load', () => {
resolve(iFrameElement);
}, false);
});
}
public static getOrCreateHiddenIFrame(id: string, url: string): Promise<HTMLIFrameElement> {
let iFrameElement = document.getElementById(id) as HTMLIFrameElement;
if (iFrameElement) {
DomUtils.log.debug(`iFrame [${id}] already exist`);
return Promise.resolve(iFrameElement as HTMLIFrameElement);
} else {
iFrameElement = document.createElement('iframe');
iFrameElement.setAttribute('id', id);
iFrameElement.setAttribute('src', url);
iFrameElement.style.cssText = 'position:absolute;width:1px;height:1px;left:-9999px;display:none';
document.body.appendChild(iFrameElement);
}
return DomUtils.iFrameLoaded(iFrameElement);
}
public static getOrigin(url: string): string {
if (url.startsWith('/')) {
return window.location.origin;
}
const parts = url.split('/');
if (parts.length > 2 && parts[0].indexOf('http') === 0) {
return parts[0] + '//' + parts[2];
} else {
throw new Error(`Couldn't get origin, unsupported URL - ${url}`);
}
}
public static getQueryParam(name: string): string | undefined {
const top = DomUtils.getTopWindow(window);
const value = (new RegExp('[?&]' + encodeURIComponent(name) + '=([^&]*)')).exec(top.location.search);
return value ? decodeURIComponent(value[1]) : undefined;
}
public static getTopWindow(window: Window): Window {
try {
if (window.parent && window.parent !== window) {
return DomUtils.getTopWindow(window.parent);
} else {
return window;
}
} catch (e) {
// parent from other domain, we should stop here
return window;
}
}
}
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