Source: jsdoc/node_modules/elements-sk/nav-links-sk/nav-links-sk.js

// 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/nav-links-sk
 * @description <h2><code>nav-links-sk</code></h2>
 *
 * <p>
 *   See also the documentation for {@link module:elements-sk/nav-button-sk}.
 * </p>
 *
 * <p>
 *   The nav-links-sk will be closed if the user presses ESC, or if focus
 *   moves off of nav-links-sk or any of its children.
 * </p>
 *
 * @attr shown - A boolean attribute controlling if the list of links is
 *   displayed or not.
 *
 * @example
 *
 * // Using nav-button-sk:
 * <nav-button-sk></nav-button-sk>
 * <nav-links-sk shown>
 *   <a href="">Main</a>
 *   <a href="">Triage</a>
 *   <a href="">Alerts</a>
 * </nav-links-sk>
 *
 * // Using a button instead of nav-button-sk:
 * <button onclick="this.nextElementSibling.shown = true;">
 *   <create-icon-sk></create-icon-sk>
 * </button>
 * <nav-links-sk>
 *   <a href="">New A</a>
 *   <a href="">New B</a>
 *   <a href="">New C</a>
 * </nav-links-sk>
 *
 */
import { define } from '../define';
import { upgradeProperty } from '../upgradeProperty';
export class NavLinksSk extends HTMLElement {
    static get observedAttributes() {
        return ['shown'];
    }
    connectedCallback() {
        upgradeProperty(this, 'shown');
    }
    /** Mirrors the shown attribute. */
    get shown() { return this.hasAttribute('shown'); }
    set shown(val) {
        if (val) {
            this.setAttribute('shown', '');
        }
        else {
            this.removeAttribute('shown');
        }
    }
    attributeChangedCallback(name, oldValue, newValue) {
        if (newValue !== null) {
            window.addEventListener('keydown', this);
        }
        else {
            window.removeEventListener('keydown', this);
            this.dispatchEvent(new CustomEvent('closed', { bubbles: true }));
        }
    }
    handleEvent(e) {
        if (e.key === 'Escape') {
            e.preventDefault();
            this.shown = false;
        }
    }
}
;
define('nav-links-sk', NavLinksSk);
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