InitialPagedList.kt
/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.paging
import androidx.annotation.RestrictTo
import kotlinx.coroutines.CoroutineDispatcher
import kotlinx.coroutines.CoroutineScope
/**
* InitialPagedList is an empty placeholder that's sent at the front of a stream of [PagedList].
*
* It's used solely for listening to [LoadType.REFRESH] loading events, and retrying
* any errors that occur during initial load.
*
* @suppress
*/
@RestrictTo(RestrictTo.Scope.LIBRARY)
class InitialPagedList<K : Any, V : Any>(
pagingSource: PagingSource<K, V>,
coroutineScope: CoroutineScope,
notifyDispatcher: CoroutineDispatcher,
backgroundDispatcher: CoroutineDispatcher,
config: Config,
initialLastKey: K?
) : ContiguousPagedList<K, V>(
pagingSource = pagingSource,
coroutineScope = coroutineScope,
notifyDispatcher = notifyDispatcher,
backgroundDispatcher = backgroundDispatcher,
boundaryCallback = null,
config = config,
initialPage = PagingSource.LoadResult.Page.empty(),
initialLastKey = initialLastKey
)