foundation.ts

/**
 * @license
 * Copyright 2016 Google Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

/** MDC Foundation */
export class MDCFoundation<AdapterType extends {} = {}> {
  static get cssClasses(): {[key: string]: string} {
    // Classes extending MDCFoundation should implement this method to return an
    // object which exports every CSS class the foundation class needs as a
    // property. e.g. {ACTIVE: 'mdc-component--active'}
    return {};
  }

  static get strings(): {[key: string]: string} {
    // Classes extending MDCFoundation should implement this method to return an
    // object which exports all semantic strings as constants. e.g. {ARIA_ROLE:
    // 'tablist'}
    return {};
  }

  static get numbers(): {[key: string]: number} {
    // Classes extending MDCFoundation should implement this method to return an
    // object which exports all of its semantic numbers as constants.
    // e.g. {ANIMATION_DELAY_MS: 350}
    return {};
  }

  static get defaultAdapter(): {} {
    // Classes extending MDCFoundation may choose to implement this getter in
    // order to provide a convenient way of viewing the necessary methods of an
    // adapter. In the future, this could also be used for adapter validation.
    return {};
  }

  constructor(protected adapter: AdapterType = {} as AdapterType) {}

  init() {
    // Subclasses should override this method to perform initialization routines
    // (registering events, etc.)
  }

  destroy() {
    // Subclasses should override this method to perform de-initialization
    // routines (de-registering events, etc.)
  }
}

/**
 * The constructor for MDCFoundation.
 */
export interface MDCFoundationConstructor<AdapterType extends object = any> {
  new(adapter: AdapterType): MDCFoundation<AdapterType>;
  readonly prototype: MDCFoundation<AdapterType>;
}

/**
 * The deprecated constructor for MDCFoundation.
 */
export interface MDCFoundationDeprecatedConstructor<
    AdapterType extends object = any> {
  readonly cssClasses: Record<string, string>;
  readonly strings: Record<string, string>;
  readonly numbers: Record<string, number>;
  readonly defaultAdapter: AdapterType;

  new(adapter?: Partial<AdapterType>): MDCFoundation<AdapterType>;
  readonly prototype: MDCFoundation<AdapterType>;
}

/**
 * Retrieves the AdapaterType from the provided MDCFoundation generic type.
 */
export type MDCFoundationAdapter<T> =
    T extends MDCFoundation<infer A>? A : never;

// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.
export default MDCFoundation;