@finos/legend-application/lib/stores/event/IframeEventNotifierPlugin.js

Legend application core

/**
 * Copyright (c) 2020-present, Goldman Sachs
 *
 * 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 packageJson from '../../../package.json' with { type: 'json' };
import { EventNotifierPlugin, } from './EventService.js';
export class IframeEventNotifierPlugin extends EventNotifierPlugin {
    constructor() {
        super(packageJson.extensions.iframeEventNotifierPlugin, packageJson.version);
    }
    notify(event, data) {
        // NOTE: here we only open communication channel with parent frame, hence `window.parent`
        // instead of `window.top`
        //
        // To receive messages like this, the parent frame can use `window.onmessage = ...`
        //
        // Notice that we specify `targetOrigin = '*'` which means no restriction,
        // this is for flexibility, but it could also stir some security concern
        // See https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage
        window.parent.postMessage({ event, data }, '*');
    }
}
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