1:1 translation from the RxJava implementation, should match the
previous behavior.
Dropped the return value from functions of the form
```
fun foo(t: T, ...): Observable<T>
```
where the Observable produced the original argument `t`.
The caller already has the result if necessary.
While this conversion is not flow-based overall, some sections use
flows to use the flatMapMerge and retryWhen operators.
Removed RetryWithDelay as it was only used here.
Inlined fetchAllImageUrlsFromPageList instead of converting it to a
suspending equivalent. fetchAllImageUrlsFromPageList is no longer
used in the app, but was not removed as it is part of source-api.
(However, it does not seem to be used exposed in extensions-lib or
used in tachiyomi-extensions.)
runBlocking is used as a temporary stop-gap.
When restarting a download, the page count would display as 0 until
the first page download completion, after all the existing pages were
rechecked.
To fix, calculate downloadedImages from pages instead of relying on
the downloader to reset and increment the count.
Includes side effects:
- No longer need to restart app for user agent string change to take effect
- parseAs extension function requires a Json instance in the calling context, which doesn't necessarily need to be the default one provided by Injekt
`it.id` is the source ID of the source being sorted.
`state.value.manga!!.id` is the manga ID of the selected manga.
`state.value.manga!!.source` is the source ID of the selected manga.
(cherry picked from commit dc2eaf0788)
Inline readImageHeaderSubscription in PageHolder
Inline readImageHeaderSubscription in PagerPageHolder and
WebtoonPageHolder by converting setImage() into a suspend function.
The image processing runs in the loadPageAndProcessStatus
continuation.
Use suspendCancellableCoroutine as a substitute for doOnUnsubscribe
in WebtoonPageHolder.
Closing openStream after the frame.setImage but before the PageHolder
is recycled causes the page display to fail for reasons that are not
currently understood.
Remove subscription handling from WebtoonViewer/WebtoonBaseHolder as
it is no longer used.
Inline statusJob into loadJob, using supervisorScope to load the page
and track status changes in parallel.
- supervisorScope does not complete until both the child loadPage
coroutine and statusFlow.collectLatest have completed.
- Cancelling supervisorScope cancels the child loadPage coroutine and
statusFlow.collectLatest.
- Use supervisorScope instead of coroutineScope to let status
collection continue if loadPage fails.
Inline progressJob into loadJob, using collectLatest's cancellation
to avoid cancelling the progressFlow collection explicitly.
- collectLatest cancels the previous action block when the flow
emits a new value. This means the DOWNLOAD_IMAGE
progressFlow.collectLatest gets automatically cancelled when
statusFlow emits a new state.
Convert launchLoadJob to suspend function, move job launch to caller,
and rename as loadPageAndProcessStatus.
`it.id` is the source ID of the source being sorted.
`state.value.manga!!.id` is the manga ID of the selected manga.
`state.value.manga!!.source` is the source ID of the selected manga.
