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leaflet-components/src/components/leaflet-video-overlay.ts

87 lines
3.0 KiB
TypeScript

import { VideoOverlay, LatLngBounds, LatLngBoundsExpression, LatLngExpression } from 'leaflet';
import { buildOptions, parseAttributeValue } from '../core/utils.js';
import { withProps } from '../core/with-props.js';
import { registerChildren, unregisterChildren } from '../core/register.js';
import type { PropDef } from '../types/props.js';
const PROPS = {
url: { kind: 'str', attr: 'url', default: '' },
bounds: { kind: 'str', attr: 'bounds', default: '' },
opacity: { kind: 'num', attr: 'opacity', default: 1.0 },
alt: { kind: 'str', attr: 'alt', default: '' },
interactive: { kind: 'bool-on', attr: 'interactive' },
crossOrigin: { kind: 'str', attr: 'cross-origin', default: '' },
loop: { kind: 'bool-on', attr: 'loop' },
autoplay: { kind: 'bool-on', attr: 'autoplay' },
muted: { kind: 'bool-on', attr: 'muted' },
playsInline: { kind: 'bool-on', attr: 'playsinline' },
} satisfies Record<string, PropDef>;
const PROP_BY_ATTR = new Map<string, string>(
Object.entries(PROPS).map(([name, spec]) => [spec.attr, name]),
);
export class LeafletVideoOverlay extends withProps(HTMLElement, PROPS) {
#obj?: VideoOverlay;
connectedCallback() {
const url = this.getAttribute('url') || '';
this.#obj = new VideoOverlay(
url,
this.#parsedBounds(),
buildOptions(this, PROPS, ['url', 'bounds']),
);
registerChildren(this, this.#obj);
}
disconnectedCallback() {
unregisterChildren(this);
this.#obj?.remove();
this.#obj = undefined;
}
attributeChangedCallback(name: string, _old: string | null, val: string | null) {
if (!this.#obj) return;
if (name === 'url') {
if (val) this.#obj.setUrl(val);
} else if (name === 'bounds') {
this.#obj.setBounds(new LatLngBounds(this.#parsedBounds() as LatLngExpression[]));
} else if (
name === 'loop' ||
name === 'autoplay' ||
name === 'muted' ||
name === 'playsinline'
) {
const el = this.#obj.getElement();
if (el) {
if (name === 'loop') el.loop = val !== null;
else if (name === 'autoplay') el.autoplay = val !== null;
else if (name === 'muted') el.muted = val !== null;
else if (name === 'playsinline') el.playsInline = val !== null;
}
} else {
const propName = PROP_BY_ATTR.get(name);
if (!propName) return;
const setter =
`set${propName.charAt(0).toUpperCase()}${propName.slice(1)}` as keyof VideoOverlay;
if (typeof this.#obj[setter] === 'function') {
const spec = PROPS[propName as keyof typeof PROPS];
const value = spec.kind === 'bool-on' ? val !== null : parseAttributeValue(val);
(this.#obj[setter] as (v: unknown) => void)(value);
}
}
}
#parsedBounds(): LatLngBoundsExpression {
const raw = this.getAttribute('bounds');
return raw ? (JSON.parse(raw) as LatLngBoundsExpression) : [];
}
getElement(): HTMLVideoElement | undefined {
return this.#obj?.getElement();
}
}
customElements.define('leaflet-video-overlay', LeafletVideoOverlay);