58 lines
1.9 KiB
TypeScript
58 lines
1.9 KiB
TypeScript
// APIs for normalizing fullscreen operations. Note that Edge uses
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// the WebKit-prefixed APIs currently (as of Edge 16).
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export const isFullscreen = (): boolean => {
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return Boolean(
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document.fullscreenElement ||
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// @ts-ignore
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document.webkitFullscreenElement ||
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// @ts-ignore
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document.mozFullScreenElement,
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);
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};
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export const exitFullscreen = (): void => {
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if (document.exitFullscreen) {
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document.exitFullscreen();
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} else if ('webkitExitFullscreen' in document) {
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// @ts-ignore
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document.webkitExitFullscreen();
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} else if ('mozCancelFullScreen' in document) {
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// @ts-ignore
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document.mozCancelFullScreen();
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}
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};
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export const requestFullscreen = (el: Element): void => {
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if (el.requestFullscreen) {
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el.requestFullscreen();
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} else if ('webkitRequestFullscreen' in el) {
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// @ts-ignore
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el.webkitRequestFullscreen();
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} else if ('mozRequestFullScreen' in el) {
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// @ts-ignore
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el.mozRequestFullScreen();
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}
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};
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type FullscreenListener = (this: Document, ev: Event) => void;
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export const attachFullscreenListener = (listener: FullscreenListener): void => {
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if ('onfullscreenchange' in document) {
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document.addEventListener('fullscreenchange', listener);
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} else if ('onwebkitfullscreenchange' in document) {
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document.addEventListener('webkitfullscreenchange', listener);
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} else if ('onmozfullscreenchange' in document) {
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document.addEventListener('mozfullscreenchange', listener);
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}
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};
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export const detachFullscreenListener = (listener: FullscreenListener): void => {
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if ('onfullscreenchange' in document) {
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document.removeEventListener('fullscreenchange', listener);
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} else if ('onwebkitfullscreenchange' in document) {
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document.removeEventListener('webkitfullscreenchange', listener);
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} else if ('onmozfullscreenchange' in document) {
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document.removeEventListener('mozfullscreenchange', listener);
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}
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};
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