d1ea1f4c7f
Update the license headers throughout the repository to reference Google LLC rather than Google Inc, for the required license headers. PR Close #37205
40 lines
1.0 KiB
TypeScript
40 lines
1.0 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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/**
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* Represents a basic change from a previous to a new value for a single
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* property on a directive instance. Passed as a value in a
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* {@link SimpleChanges} object to the `ngOnChanges` hook.
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*
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* @see `OnChanges`
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*
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* @publicApi
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*/
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export class SimpleChange {
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constructor(public previousValue: any, public currentValue: any, public firstChange: boolean) {}
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/**
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* Check whether the new value is the first value assigned.
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*/
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isFirstChange(): boolean {
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return this.firstChange;
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}
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}
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/**
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* A hashtable of changes represented by {@link SimpleChange} objects stored
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* at the declared property name they belong to on a Directive or Component. This is
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* the type passed to the `ngOnChanges` hook.
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*
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* @see `OnChanges`
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*
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* @publicApi
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*/
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export interface SimpleChanges {
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[propName: string]: SimpleChange;
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}
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