elements-sk/modules/error-toast-sk/error-toast-sk.ts

// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @module elements-sk/error-toast-sk
 * @description <h2><code>error-toast-sk</code></h2>
 *
 * <p>
 *   Listens for 'error-sk' events that bubble up to the document and displays them.
 *   These are normally generated by errorMessage.
 * </p>
 *
 * <p>
 *   The 'error-sk' event should have 'detail' of the form:
 * </p>
 *
 * <pre>
 *    {
 *      message: "The error message to display goes here.",
 *      duration: Integer, the number of ms to display or 0 for indefinitely.
 *                Defaults to 10000 (10s)
 *    }
 * </pre>
 *
 * @example
 *
 * <footer>
 *   <error-toast-sk></error-toast-sk>
 * </footer>
 */
import { define } from '../define';
import { ToastSk } from '../toast-sk/toast-sk';
import '../toast-sk';
import { ErrorSkEventDetail } from '../errorMessage';

export class ErrorToastSk extends HTMLElement {
  private toast: ToastSk | null = null;

  private span: HTMLSpanElement | null = null;

  connectedCallback(): void {
    this.innerHTML =
      '<toast-sk><span></span><button title="Close">✗</button></toast-sk>';
    this.toast = this.firstElementChild as ToastSk;
    this.span = this.toast!.firstElementChild as HTMLSpanElement;

    document.addEventListener('error-sk', this);
    this.querySelector('button')!.addEventListener('click', (e) =>
      this.clickHandler()
    );
  }

  disconnectedCallback(): void {
    document.removeEventListener('error-sk', this);
  }

  clickHandler() {
    this.toast!.hide();
  }

  handleEvent(e: CustomEvent<ErrorSkEventDetail>) {
    this.toast!.duration = e.detail.duration;
    this.span!.textContent = e.detail.message;
    this.toast!.show();
  }
}

define('error-toast-sk', ErrorToastSk);