D-Net

/**

 * @license

 * Copyright Google Inc. 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 { DoCheck, ElementRef, IterableDiffers, KeyValueDiffers, Renderer } from '@angular/core';

/**

 * @ngModule CommonModule

 *

 * @whatItDoes Adds and removes CSS classes on an HTML element.

 *

 * @howToUse

 * ```

 *     <some-element [ngClass]="'first second'">...</some-element>

 *

 *     <some-element [ngClass]="['first', 'second']">...</some-element>

 *

 *     <some-element [ngClass]="{'first': true, 'second': true, 'third': false}">...</some-element>

 *

 *     <some-element [ngClass]="stringExp|arrayExp|objExp">...</some-element>

 *

 *     <some-element [ngClass]="{'class1 class2 class3' : true}">...</some-element>

 * ```

 *

 * @description

 *

 * The CSS classes are updated as follows, depending on the type of the expression evaluation:

 * - `string` - the CSS classes listed in the string (space delimited) are added,

 * - `Array` - the CSS classes declared as Array elements are added,

 * - `Object` - keys are CSS classes that get added when the expression given in the value

 *              evaluates to a truthy value, otherwise they are removed.

 *

 * @stable

 */

export declare class NgClass implements DoCheck {

    private _iterableDiffers;

    private _keyValueDiffers;

    private _ngEl;

    private _renderer;

    private _iterableDiffer;

    private _keyValueDiffer;

    private _initialClasses;

    private _rawClass;

    constructor(_iterableDiffers: IterableDiffers, _keyValueDiffers: KeyValueDiffers, _ngEl: ElementRef, _renderer: Renderer);

    klass: string;

    ngClass: string | string[] | Set<string> | {

        [klass: string]: any;

    };

    ngDoCheck(): void;

    private _cleanupClasses(rawClassVal);

    private _applyKeyValueChanges(changes);

    private _applyIterableChanges(changes);

    private _applyInitialClasses(isCleanup);

    private _applyClasses(rawClassVal, isCleanup);

    private _toggleClass(klass, enabled);

}