node_modules/@angular/cdk/esm2015/overlay/overlay-config.js

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { NoopScrollStrategy } from './scroll/index';
/** Initial configuration used when creating an overlay. */
export class OverlayConfig {
    constructor(config) {
        /** Strategy to be used when handling scroll events while the overlay is open. */
        this.scrollStrategy = new NoopScrollStrategy();
        /** Custom class to add to the overlay pane. */
        this.panelClass = '';
        /** Whether the overlay has a backdrop. */
        this.hasBackdrop = false;
        /** Custom class to add to the backdrop */
        this.backdropClass = 'cdk-overlay-dark-backdrop';
        /**
         * Whether the overlay should be disposed of when the user goes backwards/forwards in history.
         * Note that this usually doesn't include clicking on links (unless the user is using
         * the `HashLocationStrategy`).
         */
        this.disposeOnNavigation = false;
        if (config) {
            // Use `Iterable` instead of `Array` because TypeScript, as of 3.6.3,
            // loses the array generic type in the `for of`. But we *also* have to use `Array` because
            // typescript won't iterate over an `Iterable` unless you compile with `--downlevelIteration`
            const configKeys = Object.keys(config);
            for (const key of configKeys) {
                if (config[key] !== undefined) {
                    // TypeScript, as of version 3.5, sees the left-hand-side of this expression
                    // as "I don't know *which* key this is, so the only valid value is the intersection
                    // of all the posible values." In this case, that happens to be `undefined`. TypeScript
                    // is not smart enough to see that the right-hand-side is actually an access of the same
                    // exact type with the same exact key, meaning that the value type must be identical.
                    // So we use `any` to work around this.
                    this[key] = config[key];
                }
            }
        }
    }
}
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