1 /*
2  * Copyright (C) 2024 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 
17 package com.android.systemui.scene.session.shared
18 
19 import androidx.compose.runtime.getValue
20 import androidx.compose.runtime.mutableStateOf
21 import androidx.compose.runtime.setValue
22 
23 /** Data store for [Session][com.android.systemui.scene.session.ui.composable.Session]. */
24 class SessionStorage {
25     private var _storage by mutableStateOf(hashMapOf<String, StorageEntry>())
26 
27     /**
28      * Data store containing all state retained for invocations of
29      * [rememberSession][com.android.systemui.scene.session.ui.composable.Session.rememberSession]
30      */
31     val storage: MutableMap<String, StorageEntry>
32         get() = _storage
33 
34     /**
35      * Storage for an individual invocation of
36      * [rememberSession][com.android.systemui.scene.session.ui.composable.Session.rememberSession]
37      */
38     class StorageEntry(val keys: Array<out Any?>, var stored: Any?)
39 
40     /** Clears the data store; any downstream usage within `@Composable`s will be recomposed. */
clearnull41     fun clear() {
42         _storage = hashMapOf()
43     }
44 }
45