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Use paging library in SearchFragment.
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22 changes: 22 additions & 0 deletions
22
app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchPagingSource.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| package org.schabi.newpipe.fragments.list.search | ||
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| import androidx.paging.PagingSource | ||
| import androidx.paging.PagingState | ||
| import org.schabi.newpipe.extractor.Page | ||
| import org.schabi.newpipe.extractor.search.SearchInfo | ||
| import org.schabi.newpipe.util.ExtractorHelper | ||
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| class SearchPagingSource( | ||
| private val serviceId: Int, | ||
| private val query: String, | ||
| private val contentFilter: List<String>, | ||
| private val sortFilter: String, | ||
| ) : PagingSource<Page, SearchInfo>() { | ||
| override fun getRefreshKey(state: PagingState<Page, SearchInfo>): Page? { | ||
| TODO("Not yet implemented") | ||
| } | ||
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| override suspend fun load(params: LoadParams<Page>): LoadResult<Page, SearchInfo> { | ||
| TODO("Not yet implemented") | ||
| } | ||
| } |
23 changes: 23 additions & 0 deletions
23
app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchRemoteMediator.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| package org.schabi.newpipe.fragments.list.search | ||
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| import androidx.paging.ExperimentalPagingApi | ||
| import androidx.paging.LoadType | ||
| import androidx.paging.PagingState | ||
| import androidx.paging.RemoteMediator | ||
| import org.schabi.newpipe.extractor.Page | ||
| import org.schabi.newpipe.extractor.search.SearchInfo | ||
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| @OptIn(ExperimentalPagingApi::class) | ||
| class SearchRemoteMediator( | ||
| private val serviceId: Int, | ||
| private val query: String, | ||
| private val contentFilter: List<String>, | ||
| private val sortFilter: String | ||
| ) : RemoteMediator<Page, SearchInfo>() { | ||
| override suspend fun load( | ||
| loadType: LoadType, | ||
| state: PagingState<Page, SearchInfo> | ||
| ): MediatorResult { | ||
| TODO("Not yet implemented") | ||
| } | ||
| } |
16 changes: 16 additions & 0 deletions
16
app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchService.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,16 @@ | ||
| package org.schabi.newpipe.fragments.list.search | ||
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| import androidx.paging.Pager | ||
| import androidx.paging.PagingConfig | ||
| import androidx.paging.PagingData | ||
| import kotlinx.coroutines.flow.Flow | ||
| import org.schabi.newpipe.extractor.search.SearchInfo | ||
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| fun getSearchResultStream( | ||
| serviceId: Int, query: String, contentFilter: List<String>, sortFilter: String | ||
| ): Flow<PagingData<SearchInfo>> { | ||
| return Pager( | ||
| config = PagingConfig(pageSize = 50, enablePlaceholders = false), | ||
| pagingSourceFactory = { SearchPagingSource(serviceId, query, contentFilter, sortFilter) } | ||
| ).flow | ||
| } |
101 changes: 101 additions & 0 deletions
101
app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchViewModel.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,101 @@ | ||
| package org.schabi.newpipe.fragments.list.search | ||
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| import android.app.Application | ||
| import androidx.lifecycle.LiveData | ||
| import androidx.lifecycle.MutableLiveData | ||
| import androidx.lifecycle.ViewModel | ||
| import androidx.lifecycle.viewmodel.initializer | ||
| import androidx.lifecycle.viewmodel.viewModelFactory | ||
| import io.reactivex.rxjava3.core.Observable | ||
| import io.reactivex.rxjava3.core.Single | ||
| import io.reactivex.rxjava3.subjects.PublishSubject | ||
| import org.schabi.newpipe.App | ||
| import org.schabi.newpipe.local.history.HistoryRecordManager | ||
| import org.schabi.newpipe.util.ExtractorHelper | ||
| import java.util.concurrent.TimeUnit | ||
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| class SearchViewModel( | ||
| application: Application, | ||
| private val serviceId: Int, | ||
| private val showLocalSuggestions: Boolean, | ||
| private val showRemoteSuggestions: Boolean | ||
| ) : ViewModel() { | ||
| private val historyRecordManager = HistoryRecordManager(application) | ||
| private val suggestionPublisher = PublishSubject.create<String>() | ||
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| private val suggestionMutableLiveData = MutableLiveData<SuggestionItemResponse>() | ||
| val suggestionLiveData: LiveData<SuggestionItemResponse> get() = suggestionMutableLiveData | ||
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| private val suggestionDisposable = suggestionPublisher | ||
| .debounce(SUGGESTIONS_DEBOUNCE, TimeUnit.MILLISECONDS) | ||
| .switchMap { query: String -> | ||
| // Only show remote suggestions if they are enabled in settings and | ||
| // the query length is at least THRESHOLD_NETWORK_SUGGESTION | ||
| val shallShowRemoteSuggestionsNow = (showRemoteSuggestions && query.length >= THRESHOLD_NETWORK_SUGGESTION) | ||
| if (showLocalSuggestions && shallShowRemoteSuggestionsNow) { | ||
| Observable.zip( | ||
| getLocalSuggestionsObservable(query, 3), | ||
| getRemoteSuggestionsObservable(query) | ||
| ) { local, remote -> (local + remote).distinct() } | ||
| } else if (showLocalSuggestions) { | ||
| getLocalSuggestionsObservable(query, 25) | ||
| } else if (shallShowRemoteSuggestionsNow) { | ||
| getRemoteSuggestionsObservable(query) | ||
| } else { | ||
| Single.just(emptyList<SuggestionItem>()).toObservable() | ||
| } | ||
| } | ||
| .subscribe({ suggestions -> | ||
| suggestions.forEach { suggestionMutableLiveData.postValue(SuggestionItemSuccess(it)) } | ||
| }) { | ||
| suggestionMutableLiveData.postValue(SuggestionItemError(it)) | ||
| } | ||
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| override fun onCleared() { | ||
| suggestionDisposable.dispose() | ||
| } | ||
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| fun updateSearchQuery(query: String) { | ||
| suggestionPublisher.onNext(query) | ||
| } | ||
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| private fun getLocalSuggestionsObservable(query: String, similarQueryLimit: Int): Observable<List<SuggestionItem>> { | ||
| return historyRecordManager.getRelatedSearches(query, similarQueryLimit, 25) | ||
| .toObservable() | ||
| .map { entries -> entries.map { SuggestionItem(true, it) } } | ||
| } | ||
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| private fun getRemoteSuggestionsObservable(query: String): Observable<List<SuggestionItem>> { | ||
| return ExtractorHelper.suggestionsFor(serviceId, query) | ||
| .toObservable() | ||
| .map { entries -> entries.map { SuggestionItem(false, it) } } | ||
| } | ||
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| companion object { | ||
| /** | ||
| * How much time have to pass without emitting a item (i.e. the user stop typing) | ||
| * to fetch/show the suggestions, in milliseconds. | ||
| */ | ||
| private const val SUGGESTIONS_DEBOUNCE = 120L // ms | ||
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| /** | ||
| * The suggestions will only be fetched from network if the query meet this threshold (>=). | ||
| * (local ones will be fetched regardless of the length) | ||
| */ | ||
| private const val THRESHOLD_NETWORK_SUGGESTION = 1 | ||
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| fun getFactory( | ||
| serviceId: Int, | ||
| showLocalSuggestions: Boolean, | ||
| showRemoteSuggestions: Boolean | ||
| ) = viewModelFactory { | ||
| initializer { | ||
| SearchViewModel(App.getApp(), serviceId, showLocalSuggestions, showRemoteSuggestions) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| sealed class SuggestionItemResponse | ||
| class SuggestionItemSuccess(val item: SuggestionItem) : SuggestionItemResponse() | ||
| class SuggestionItemError(val throwable: Throwable) : SuggestionItemResponse() |
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