mirror of
https://git.mihon.tech/mihonapp/mihon
synced 2024-11-23 05:35:51 +03:00
Simplify PageHolder load Job (#9086)
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.
This commit is contained in:
Two-Ai
GitHub
parent
dc2eaf0788
commit
4635e58405
2 changed files with 54 additions and 144 deletions
|
|
@ -19,10 +19,12 @@ import kotlinx.coroutines.Job
|
|||
import kotlinx.coroutines.MainScope
|
||||
import kotlinx.coroutines.flow.collectLatest
|
||||
import kotlinx.coroutines.launch
|
||||
import kotlinx.coroutines.supervisorScope
|
||||
import rx.Observable
|
||||
import rx.Subscription
|
||||
import rx.android.schedulers.AndroidSchedulers
|
||||
import rx.schedulers.Schedulers
|
||||
import tachiyomi.core.util.lang.launchIO
|
||||
import java.io.BufferedInputStream
|
||||
import java.io.ByteArrayInputStream
|
||||
import java.io.InputStream
|
||||
|
|
@ -60,20 +62,10 @@ class PagerPageHolder(
|
|||
private val scope = MainScope()
|
||||
|
||||
/**
|
||||
* Job for loading the page.
|
||||
* Job for loading the page and processing changes to the page's status.
|
||||
*/
|
||||
private var loadJob: Job? = null
|
||||
|
||||
/**
|
||||
* Job for status changes of the page.
|
||||
*/
|
||||
private var statusJob: Job? = null
|
||||
|
||||
/**
|
||||
* Job for progress changes of the page.
|
||||
*/
|
||||
private var progressJob: Job? = null
|
||||
|
||||
/**
|
||||
* Subscription used to read the header of the image. This is needed in order to instantiate
|
||||
* the appropiate image view depending if the image is animated (GIF).
|
||||
|
|
@ -82,7 +74,7 @@ class PagerPageHolder(
|
|||
|
||||
init {
|
||||
addView(progressIndicator)
|
||||
launchLoadJob()
|
||||
loadJob = scope.launch { loadPageAndProcessStatus() }
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -91,75 +83,42 @@ class PagerPageHolder(
|
|||
@SuppressLint("ClickableViewAccessibility")
|
||||
override fun onDetachedFromWindow() {
|
||||
super.onDetachedFromWindow()
|
||||
cancelProgressJob()
|
||||
cancelLoadJob()
|
||||
loadJob?.cancel()
|
||||
loadJob = null
|
||||
unsubscribeReadImageHeader()
|
||||
}
|
||||
|
||||
/**
|
||||
* Starts loading the page and processing changes to the page's status.
|
||||
* Loads the page and processes changes to the page's status.
|
||||
*
|
||||
* @see processStatus
|
||||
* Returns immediately if the page has no PageLoader.
|
||||
* Otherwise, this function does not return. It will continue to process status changes until
|
||||
* the Job is cancelled.
|
||||
*/
|
||||
private fun launchLoadJob() {
|
||||
loadJob?.cancel()
|
||||
statusJob?.cancel()
|
||||
|
||||
private suspend fun loadPageAndProcessStatus() {
|
||||
val loader = page.chapter.pageLoader ?: return
|
||||
loadJob = scope.launch {
|
||||
loader.loadPage(page)
|
||||
}
|
||||
statusJob = scope.launch {
|
||||
page.statusFlow.collectLatest { processStatus(it) }
|
||||
}
|
||||
}
|
||||
|
||||
private fun launchProgressJob() {
|
||||
progressJob?.cancel()
|
||||
progressJob = scope.launch {
|
||||
page.progressFlow.collectLatest { value -> progressIndicator.setProgress(value) }
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when the status of the page changes.
|
||||
*
|
||||
* @param status the new status of the page.
|
||||
*/
|
||||
private fun processStatus(status: Page.State) {
|
||||
when (status) {
|
||||
Page.State.QUEUE -> setQueued()
|
||||
Page.State.LOAD_PAGE -> setLoading()
|
||||
Page.State.DOWNLOAD_IMAGE -> {
|
||||
launchProgressJob()
|
||||
setDownloading()
|
||||
supervisorScope {
|
||||
launchIO {
|
||||
loader.loadPage(page)
|
||||
}
|
||||
Page.State.READY -> {
|
||||
setImage()
|
||||
cancelProgressJob()
|
||||
}
|
||||
Page.State.ERROR -> {
|
||||
setError()
|
||||
cancelProgressJob()
|
||||
page.statusFlow.collectLatest { state ->
|
||||
when (state) {
|
||||
Page.State.QUEUE -> setQueued()
|
||||
Page.State.LOAD_PAGE -> setLoading()
|
||||
Page.State.DOWNLOAD_IMAGE -> {
|
||||
setDownloading()
|
||||
page.progressFlow.collectLatest { value ->
|
||||
progressIndicator.setProgress(value)
|
||||
}
|
||||
}
|
||||
Page.State.READY -> setImage()
|
||||
Page.State.ERROR -> setError()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Cancels loading the page and processing changes to the page's status.
|
||||
*/
|
||||
private fun cancelLoadJob() {
|
||||
loadJob?.cancel()
|
||||
loadJob = null
|
||||
statusJob?.cancel()
|
||||
statusJob = null
|
||||
}
|
||||
|
||||
private fun cancelProgressJob() {
|
||||
progressJob?.cancel()
|
||||
progressJob = null
|
||||
}
|
||||
|
||||
/**
|
||||
* Unsubscribes from the read image header subscription.
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -24,10 +24,12 @@ import kotlinx.coroutines.Job
|
|||
import kotlinx.coroutines.MainScope
|
||||
import kotlinx.coroutines.flow.collectLatest
|
||||
import kotlinx.coroutines.launch
|
||||
import kotlinx.coroutines.supervisorScope
|
||||
import rx.Observable
|
||||
import rx.Subscription
|
||||
import rx.android.schedulers.AndroidSchedulers
|
||||
import rx.schedulers.Schedulers
|
||||
import tachiyomi.core.util.lang.launchIO
|
||||
import java.io.BufferedInputStream
|
||||
import java.io.InputStream
|
||||
|
||||
|
|
@ -77,16 +79,6 @@ class WebtoonPageHolder(
|
|||
*/
|
||||
private var loadJob: Job? = null
|
||||
|
||||
/**
|
||||
* Job for status changes of the page.
|
||||
*/
|
||||
private var statusJob: Job? = null
|
||||
|
||||
/**
|
||||
* Job for progress changes of the page.
|
||||
*/
|
||||
private var progressJob: Job? = null
|
||||
|
||||
/**
|
||||
* Subscription used to read the header of the image. This is needed in order to instantiate
|
||||
* the appropriate image view depending if the image is animated (GIF).
|
||||
|
|
@ -106,7 +98,8 @@ class WebtoonPageHolder(
|
|||
*/
|
||||
fun bind(page: ReaderPage) {
|
||||
this.page = page
|
||||
launchLoadJob()
|
||||
loadJob?.cancel()
|
||||
loadJob = scope.launch { loadPageAndProcessStatus() }
|
||||
refreshLayoutParams()
|
||||
}
|
||||
|
||||
|
|
@ -126,8 +119,8 @@ class WebtoonPageHolder(
|
|||
* Called when the view is recycled and added to the view pool.
|
||||
*/
|
||||
override fun recycle() {
|
||||
cancelLoadJob()
|
||||
cancelProgressJob()
|
||||
loadJob?.cancel()
|
||||
loadJob = null
|
||||
unsubscribeReadImageHeader()
|
||||
|
||||
removeErrorLayout()
|
||||
|
|
@ -136,78 +129,36 @@ class WebtoonPageHolder(
|
|||
}
|
||||
|
||||
/**
|
||||
* Starts loading the page and processing changes to the page's status.
|
||||
* Loads the page and processes changes to the page's status.
|
||||
*
|
||||
* @see processStatus
|
||||
* Returns immediately if there is no page or the page has no PageLoader.
|
||||
* Otherwise, this function does not return. It will continue to process status changes until
|
||||
* the Job is cancelled.
|
||||
*/
|
||||
private fun launchLoadJob() {
|
||||
cancelLoadJob()
|
||||
|
||||
private suspend fun loadPageAndProcessStatus() {
|
||||
val page = page ?: return
|
||||
val loader = page.chapter.pageLoader ?: return
|
||||
loadJob = scope.launch {
|
||||
loader.loadPage(page)
|
||||
}
|
||||
statusJob = scope.launch {
|
||||
page.statusFlow.collectLatest { processStatus(it) }
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Observes the progress of the page and updates view.
|
||||
*/
|
||||
private fun launchProgressJob() {
|
||||
cancelProgressJob()
|
||||
|
||||
val page = page ?: return
|
||||
|
||||
progressJob = scope.launch {
|
||||
page.progressFlow.collectLatest { value -> progressIndicator.setProgress(value) }
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when the status of the page changes.
|
||||
*
|
||||
* @param status the new status of the page.
|
||||
*/
|
||||
private fun processStatus(status: Page.State) {
|
||||
when (status) {
|
||||
Page.State.QUEUE -> setQueued()
|
||||
Page.State.LOAD_PAGE -> setLoading()
|
||||
Page.State.DOWNLOAD_IMAGE -> {
|
||||
launchProgressJob()
|
||||
setDownloading()
|
||||
supervisorScope {
|
||||
launchIO {
|
||||
loader.loadPage(page)
|
||||
}
|
||||
Page.State.READY -> {
|
||||
setImage()
|
||||
cancelProgressJob()
|
||||
}
|
||||
Page.State.ERROR -> {
|
||||
setError()
|
||||
cancelProgressJob()
|
||||
page.statusFlow.collectLatest { state ->
|
||||
when (state) {
|
||||
Page.State.QUEUE -> setQueued()
|
||||
Page.State.LOAD_PAGE -> setLoading()
|
||||
Page.State.DOWNLOAD_IMAGE -> {
|
||||
setDownloading()
|
||||
page.progressFlow.collectLatest { value ->
|
||||
progressIndicator.setProgress(value)
|
||||
}
|
||||
}
|
||||
Page.State.READY -> setImage()
|
||||
Page.State.ERROR -> setError()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Cancels loading the page and processing changes to the page's status.
|
||||
*/
|
||||
private fun cancelLoadJob() {
|
||||
loadJob?.cancel()
|
||||
loadJob = null
|
||||
statusJob?.cancel()
|
||||
statusJob = null
|
||||
}
|
||||
|
||||
/**
|
||||
* Unsubscribes from the progress subscription.
|
||||
*/
|
||||
private fun cancelProgressJob() {
|
||||
progressJob?.cancel()
|
||||
progressJob = null
|
||||
}
|
||||
|
||||
/**
|
||||
* Unsubscribes from the read image header subscription.
|
||||
*/
|
||||
|
|
|
|||
Loading…
Reference in a new issue