1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.android.intentresolver.emptystate
17 
18 import com.android.intentresolver.ResolverListAdapter
19 
20 /**
21  * Empty state provider that combines multiple providers. Providers earlier in the list have
22  * priority, that is if there is a provider that returns non-null empty state then all further
23  * providers will be ignored.
24  */
25 class CompositeEmptyStateProvider(
26     private vararg val providers: EmptyStateProvider,
27 ) : EmptyStateProvider {
28 
getEmptyStatenull29     override fun getEmptyState(resolverListAdapter: ResolverListAdapter): EmptyState? {
30         return providers.firstNotNullOfOrNull { it.getEmptyState(resolverListAdapter) }
31     }
32 }
33