tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-range.ts

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 *      http://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.
 */

import Popper from "popper.js";

class Range extends HTMLElement {

  private popper: Popper;
  private timeout: number;

  constructor() {
    super();
  }

  connectedCallback(): void {
    let range = this.range;
    let listener = this.showPopper.bind(this);
    range.addEventListener("input", listener);
    range.addEventListener("focus", listener);
  }

  get range(): HTMLInputElement {
    return this.querySelector("input[type=range]");
  }

  get tooltip(): HTMLElement {
    return this.querySelector(".popover");
  }

  get tooltipBody(): HTMLElement {
    return this.querySelector(".popover-body");
  }

  showPopper(): void {
    let tooltip = this.tooltip;
    let range = this.range;

    // update value to display
    this.tooltipBody.innerHTML = `${range.value}`; // todo: use html from lit-html

    // init
    if (!this.popper) {
      this.popper = new Popper(range, tooltip, {
        placement: "right"
      });
    }

    // show
    tooltip.classList.remove("d-none");

    // hide after some seconds
    if (this.timeout) {
      window.clearTimeout(this.timeout);
    }
    this.timeout = window.setTimeout(() => {
      tooltip.classList.add("d-none");
      console.log("timeout");
    }, 5_000);
  }
}

document.addEventListener("DOMContentLoaded", function (event: Event): void {
  window.customElements.define("tobago-range", Range);
});