youtube-music/src/plugins/music-together/element.ts

import { ElementFromHtml } from '@/plugins/utils/renderer';

import itemHTML from './templates/item.html?raw';
import popupHTML from './templates/popup.html?raw';

type Placement =
  'top'
  | 'bottom'
  | 'right'
  | 'left'
  | 'center'
  | 'middle'
  | 'center-middle'
  | 'top-left'
  | 'top-right'
  | 'bottom-left'
  | 'bottom-right';
type PopupItem = (ItemRendererProps & { type: 'item'; })
  | { type: 'divider'; }
  | { type: 'custom'; element: HTMLElement; };

type PopupProps = {
  data: PopupItem[];
  anchorAt?: Placement;
  popupAt?: Placement;
}
export const Popup = (props: PopupProps) => {
  const popup = ElementFromHtml(popupHTML);
  const container = popup.querySelector<HTMLElement>('.music-together-popup-container')!;
  const items = props.data
    .map((props) => {
      if (props.type === 'item') return {
        type: 'item' as const,
        ...ItemRenderer(props),
      };
      if (props.type === 'divider') return {
        type: 'divider' as const,
        element: ElementFromHtml('<div class="music-together-divider horizontal"></div>'),
      };
      if (props.type === 'custom') return {
        type: 'custom' as const,
        element: props.element,
      };

      return null;
    })
    .filter(Boolean);

  container.append(...items.map(({ element }) => element));
  popup.style.setProperty('opacity', '0');
  popup.style.setProperty('pointer-events', 'none');

  document.body.append(popup);

  return {
    element: popup,
    container,
    items,

    show(x: number, y: number, anchor?: HTMLElement) {
      let left = x;
      let top = y;

      if (anchor) {
        if (props.anchorAt?.includes('right')) left += anchor.clientWidth;
        if (props.anchorAt?.includes('bottom')) top += anchor.clientHeight;
        if (props.anchorAt?.includes('center')) left += anchor.clientWidth / 2;
        if (props.anchorAt?.includes('middle')) top += anchor.clientHeight / 2;
      }

      if (props.popupAt?.includes('right')) left -= popup.clientWidth;
      if (props.popupAt?.includes('bottom')) top -= popup.clientHeight;
      if (props.popupAt?.includes('center')) left -= popup.clientWidth / 2;
      if (props.popupAt?.includes('middle')) top -= popup.clientHeight / 2;

      popup.style.setProperty('left', `${left}px`);
      popup.style.setProperty('top', `${top}px`);
      popup.style.setProperty('opacity', '1');
      popup.style.setProperty('pointer-events', 'unset');

      setTimeout(() => {
        const onClose = (event: MouseEvent) => {
          const isPopupClick = event.composedPath().some((element) => element === popup);
          if (!isPopupClick) {
            this.dismiss();
            document.removeEventListener('click', onClose);
          }
        };
        document.addEventListener('click', onClose);
      }, 16);
    },
    showAtAnchor(anchor: HTMLElement) {
      const { x, y } = anchor.getBoundingClientRect();
      this.show(x, y, anchor);
    },

    isShowing() {
      return popup.style.getPropertyValue('opacity') === '1';
    },

    dismiss() {
      popup.style.setProperty('opacity', '0');
      popup.style.setProperty('pointer-events', 'none');
    }
  };
};

type ItemRendererProps = {
  id?: string;
  icon?: Element;
  text: string;
  onClick?: () => void;
};
export const ItemRenderer = (props: ItemRendererProps) => {
  const element = ElementFromHtml(itemHTML);
  const iconContainer = element.querySelector<HTMLElement>('div.icon')!;
  const textContainer = element.querySelector<HTMLElement>('div.text')!;
  if (props.icon) iconContainer.appendChild(props.icon);
  textContainer.append(props.text);

  if (props.onClick) {
    element.addEventListener('click', () => {
      props.onClick?.();
    });
  }
  if (props.id) element.id = props.id;

  return {
    element,
    setIcon(icon: Element) {
      iconContainer.replaceChildren(icon);
    },
    setText(text: string) {
      textContainer.replaceChildren(text);
    },
    id: props.id
  };
};