HKSingleParty/99_references/ionic-react-conference-app-main_old/src/pages/About.tsx

import React, { useState } from 'react';
import {
  IonHeader,
  IonToolbar,
  IonContent,
  IonPage,
  IonButtons,
  IonMenuButton,
  IonButton,
  IonIcon,
  IonDatetime,
  IonSelectOption,
  IonList,
  IonItem,
  IonLabel,
  IonSelect,
  IonPopover,
  IonText,
} from '@ionic/react';
import './About.scss';
import { ellipsisHorizontal, ellipsisVertical } from 'ionicons/icons';
import AboutPopover from '../components/AboutPopover';
import { format, parseISO } from 'date-fns';

interface AboutProps {}

const About: React.FC<AboutProps> = () => {
  const [showPopover, setShowPopover] = useState(false);
  const [popoverEvent, setPopoverEvent] = useState<MouseEvent>();
  const [location, setLocation] = useState<
    'madison' | 'austin' | 'chicago' | 'seattle'
  >('madison');
  const [conferenceDate, setConferenceDate] = useState(
    '2047-05-17T00:00:00-05:00'
  );

  const selectOptions = {
    header: 'Select a Location',
  };

  const presentPopover = (e: React.MouseEvent) => {
    setPopoverEvent(e.nativeEvent);
    setShowPopover(true);
  };

  function displayDate(date: string, dateFormat: string) {
    return format(parseISO(date), dateFormat);
  }

  return (
    <IonPage id="about-page">
      <IonContent>
        <IonHeader className="ion-no-border">
          <IonToolbar>
            <IonButtons slot="start">
              <IonMenuButton></IonMenuButton>
            </IonButtons>
            <IonButtons slot="end">
              <IonButton onClick={presentPopover}>
                <IonIcon
                  slot="icon-only"
                  ios={ellipsisHorizontal}
                  md={ellipsisVertical}
                ></IonIcon>
              </IonButton>
            </IonButtons>
          </IonToolbar>
        </IonHeader>

        <div className="about-header">
          {/* Instead of loading an image each time the select changes, use opacity to transition them */}
          <div
            className="about-image madison"
            style={{ opacity: location === 'madison' ? '1' : undefined }}
          ></div>
          <div
            className="about-image austin"
            style={{ opacity: location === 'austin' ? '1' : undefined }}
          ></div>
          <div
            className="about-image chicago"
            style={{ opacity: location === 'chicago' ? '1' : undefined }}
          ></div>
          <div
            className="about-image seattle"
            style={{ opacity: location === 'seattle' ? '1' : undefined }}
          ></div>
        </div>
        <div className="about-info">
          <h3 className="ion-padding-top ion-padding-start">About</h3>

          <p className="ion-padding-start ion-padding-end">
            The Ionic Conference is a one-day conference on{' '}
            {displayDate(conferenceDate, 'MMM dd, yyyy')} featuring talks from
            the Ionic team. It is focused on Ionic applications being built with
            Ionic Framework. This includes migrating apps to the latest version
            of the framework, Angular concepts, Webpack, Sass, and many other
            technologies used in Ionic 2. Tickets are completely sold out, and
            we’re expecting more than 1000 developers – making this the largest
            Ionic conference ever!
          </p>

          <h3 className="ion-padding-top ion-padding-start">Details</h3>

          <IonList lines="none">
            <IonItem>
              <IonSelect
                label="Location"
                value={location}
                interfaceOptions={selectOptions}
                onIonChange={(e) => setLocation(e.detail.value as any)}
              >
                <IonSelectOption value="madison">Madison, WI</IonSelectOption>
                <IonSelectOption value="austin">Austin, TX</IonSelectOption>
                <IonSelectOption value="chicago">Chicago, IL</IonSelectOption>
                <IonSelectOption value="seattle">Seattle, WA</IonSelectOption>
              </IonSelect>
            </IonItem>
            <IonItem button={true} id="open-date-input">
              <IonLabel>Date</IonLabel>
              <IonText slot="end">
                {displayDate(conferenceDate, 'MMM dd, yyyy')}
              </IonText>
              <IonPopover
                id="date-input-popover"
                trigger="open-date-input"
                showBackdrop={false}
                side="top"
                alignment="end"
              >
                <IonDatetime
                  max="2056"
                  value={conferenceDate}
                  onIonChange={(e) =>
                    setConferenceDate(e.detail.value! as string)
                  }
                  presentation="date"
                ></IonDatetime>
              </IonPopover>
            </IonItem>
          </IonList>

          <h3 className="ion-padding-top ion-padding-start">Internet</h3>

          <IonList lines="none">
            <IonItem>
              <IonLabel>Wifi network</IonLabel>
              <IonLabel className="ion-text-end">
                ica{displayDate(conferenceDate, 'y')}
              </IonLabel>
            </IonItem>
            <IonItem>
              <IonLabel>Password</IonLabel>
              <IonLabel className="ion-text-end">makegoodthings</IonLabel>
            </IonItem>
          </IonList>
        </div>
      </IonContent>

      <IonPopover
        isOpen={showPopover}
        event={popoverEvent}
        onDidDismiss={() => setShowPopover(false)}
      >
        <AboutPopover dismiss={() => setShowPopover(false)} />
      </IonPopover>
    </IonPage>
  );
};

export default React.memo(About);