| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | import { NoopScrollStrategy } from './scroll/index';
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| 9 | /** Initial configuration used when creating an overlay. */
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| 10 | export class OverlayConfig {
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| 11 | constructor(config) {
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| 12 | /** Strategy to be used when handling scroll events while the overlay is open. */
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| 13 | this.scrollStrategy = new NoopScrollStrategy();
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| 14 | /** Custom class to add to the overlay pane. */
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| 15 | this.panelClass = '';
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| 16 | /** Whether the overlay has a backdrop. */
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| 17 | this.hasBackdrop = false;
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| 18 | /** Custom class to add to the backdrop */
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| 19 | this.backdropClass = 'cdk-overlay-dark-backdrop';
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| 20 | /**
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| 21 | * Whether the overlay should be disposed of when the user goes backwards/forwards in history.
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| 22 | * Note that this usually doesn't include clicking on links (unless the user is using
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| 23 | * the `HashLocationStrategy`).
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| 24 | */
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| 25 | this.disposeOnNavigation = false;
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| 26 | if (config) {
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| 27 | // Use `Iterable` instead of `Array` because TypeScript, as of 3.6.3,
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| 28 | // loses the array generic type in the `for of`. But we *also* have to use `Array` because
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| 29 | // typescript won't iterate over an `Iterable` unless you compile with `--downlevelIteration`
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| 30 | const configKeys = Object.keys(config);
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| 31 | for (const key of configKeys) {
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| 32 | if (config[key] !== undefined) {
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| 33 | // TypeScript, as of version 3.5, sees the left-hand-side of this expression
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| 34 | // as "I don't know *which* key this is, so the only valid value is the intersection
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| 35 | // of all the posible values." In this case, that happens to be `undefined`. TypeScript
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| 36 | // is not smart enough to see that the right-hand-side is actually an access of the same
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| 37 | // exact type with the same exact key, meaning that the value type must be identical.
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| 38 | // So we use `any` to work around this.
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| 39 | this[key] = config[key];
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| 40 | }
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| 41 | }
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| 42 | }
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| 43 | }
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| 44 | }
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| 45 | //# 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