LBRYFoundation/Watch-on-LBRY
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Update ytContent.tsx

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Turns out YouTube doesn't destroy the `HTMLVideoElement` once its created, so no need to check if its destroyed
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Shiba 2021-12-11 04:23:36 +03:00 • committed by GitHub
parent c7a839573a
commit 8c4f3e60e0
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1 changed files with 24 additions and 32 deletions
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56
src/scripts/ytContent.tsx
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@ -41,6 +41,8 @@ async function resolveYT(descriptor: YTDescriptor) {
return segments.join('/');
}
/** Compute the URL and determine whether or not a redirect should be performed. Delegates the redirect to callbacks. */
async function handleURLChange(ctx: UpdateContext, { onRedirect, onURL }: UpdaterOptions): Promise<void> {
if (onURL) onURL(ctx);
@ -61,6 +63,7 @@ async function findMountPoint(): Promise<HTMLDivElement | void> {
const div = document.createElement('div');
div.style.display = 'flex';
ownerBar.insertAdjacentElement('afterend', div);
return div;
}
@ -96,39 +99,7 @@ function WatchOnLbryButton({ redirect = 'app', url: pathname, time }: { redirect
const mountPointPromise = findMountPoint();
let ctxCache: UpdateContext | undefined
{(async () => {
let videoElement: HTMLVideoElement | null = null;
let renderingButton = false
const handleTimeChange = () => {
if (renderingButton) return
if (!videoElement) return
if (!ctxCache?.url) return
const time = (videoElement.currentTime ?? 0).toFixed(0)
const { url, redirect } = ctxCache
renderingButton = true
mountPointPromise.then(mountPoint => mountPoint && render(<WatchOnLbryButton time={time} url={url} redirect={redirect} />, mountPoint))
.then(() => renderingButton = false)
}
while (true) {
await sleep(200)
if (!videoElement) {
videoElement = document.querySelector('video')
if (videoElement) videoElement.addEventListener('timeupdate', handleTimeChange)
}
else if (!videoElement.parentElement) {
videoElement.removeEventListener('timeupdate', handleTimeChange)
videoElement = null
}
}
})()}
const handle = (ctx: UpdateContext) => (ctxCache = ctx) && ctx.url && handleURLChange(ctx, {
async onURL({ descriptor: { type }, url, redirect }) {
const mountPoint = await mountPointPromise;
@ -142,6 +113,27 @@ const handle = (ctx: UpdateContext) => (ctxCache = ctx) && ctx.url && handleURLC
},
});
{(async () => {
let videoElement: HTMLVideoElement | null = null;
let renderingButton = false
while(!(videoElement = document.querySelector('video'))) await sleep(200)
const handleTimeChange = () => {
if (renderingButton) return
if (!videoElement) return
if (!ctxCache?.url) return
const time = (videoElement.currentTime ?? 0).toFixed(0)
const { url, redirect } = ctxCache
renderingButton = true
mountPointPromise.then(mountPoint => mountPoint && render(<WatchOnLbryButton time={time} url={url} redirect={redirect} />, mountPoint))
.then(() => renderingButton = false)
}
videoElement.addEventListener('timeupdate', handleTimeChange)
})()}
// handle the location on load of the page
chrome.runtime.sendMessage({ url: location.href }, async (ctx: UpdateContext) => handle(ctx));