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common/src/main/java/jp/co/soramitsu/common/domain/DarkThemeManager.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /* | ||
| This file is part of the SORA network and Polkaswap app. | ||
| Copyright (c) 2020, 2021, Polka Biome Ltd. All rights reserved. | ||
| SPDX-License-Identifier: BSD-4-Clause | ||
| Redistribution and use in source and binary forms, with or without modification, | ||
| are permitted provided that the following conditions are met: | ||
| Redistributions of source code must retain the above copyright notice, this list | ||
| of conditions and the following disclaimer. | ||
| Redistributions in binary form must reproduce the above copyright notice, this | ||
| list of conditions and the following disclaimer in the documentation and/or other | ||
| materials provided with the distribution. | ||
| All advertising materials mentioning features or use of this software must display | ||
| the following acknowledgement: This product includes software developed by Polka Biome | ||
| Ltd., SORA, and Polkaswap. | ||
| Neither the name of the Polka Biome Ltd. nor the names of its contributors may be used | ||
| to endorse or promote products derived from this software without specific prior written permission. | ||
| THIS SOFTWARE IS PROVIDED BY Polka Biome Ltd. AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, | ||
| INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Polka Biome Ltd. BE LIABLE FOR ANY | ||
| DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | ||
| BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | ||
| OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | ||
| STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | ||
| USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
|
|
||
| package jp.co.soramitsu.common.domain | ||
|
|
||
| import android.content.Context | ||
| import android.content.res.Configuration | ||
| import androidx.appcompat.app.AppCompatDelegate | ||
| import dagger.hilt.android.qualifiers.ApplicationContext | ||
| import javax.inject.Inject | ||
| import javax.inject.Singleton | ||
| import jp.co.soramitsu.common.data.SoraPreferences | ||
| import kotlinx.coroutines.ExperimentalCoroutinesApi | ||
| import kotlinx.coroutines.channels.BufferOverflow | ||
| import kotlinx.coroutines.flow.MutableSharedFlow | ||
| import kotlinx.coroutines.flow.SharingStarted | ||
| import kotlinx.coroutines.flow.StateFlow | ||
| import kotlinx.coroutines.flow.flowOn | ||
| import kotlinx.coroutines.flow.mapLatest | ||
| import kotlinx.coroutines.flow.stateIn | ||
| import kotlinx.coroutines.launch | ||
|
|
||
| @Singleton | ||
| @OptIn(ExperimentalCoroutinesApi::class) | ||
| class DarkThemeManager @Inject constructor( | ||
| @ApplicationContext private val context: Context, | ||
| private val coroutineManager: CoroutineManager, | ||
| private val soraPreferences: SoraPreferences, | ||
| ) { | ||
|
|
||
| private data class DarkModeSettings( | ||
| val isSystemDrivenUiEnabled: Boolean, | ||
| val isDarkModeEnabled: Boolean | ||
| ) | ||
|
|
||
| private val mutableDarkThemeSharedFlow = MutableSharedFlow<DarkModeSettings>( | ||
| replay = 1, | ||
| extraBufferCapacity = 0, | ||
| onBufferOverflow = BufferOverflow.DROP_OLDEST | ||
| ) | ||
|
|
||
| /** | ||
| * [darkModeStatusFlow] is used to read saved state of dark mode preferences off of SoraPreferences | ||
| * and align these results with Application Configuration | ||
| * | ||
| * Hot StateFlow is used to share the same state of UI mode between screens, and avoid unnecessary | ||
| * theme switches | ||
| */ | ||
| val darkModeStatusFlow: StateFlow<Boolean> = mutableDarkThemeSharedFlow | ||
| .mapLatest { darkModeSettings -> | ||
| with(darkModeSettings) { | ||
| return@mapLatest if (isSystemDrivenUiEnabled) { | ||
| /* | ||
| Resources.Configuration.uiMode as opposed to AppCompatDelegate.getDefaultNightMode() | ||
| is set to Configuration.UI_MODE_NIGHT_YES when system dark mode is enabled | ||
| (e.g. extreme battery settings on, or system dark mode is enabled) | ||
| */ | ||
| val currentAppUiMode = context.resources.configuration.uiMode | ||
| .and(Configuration.UI_MODE_NIGHT_MASK) | ||
|
|
||
| if (currentAppUiMode == Configuration.UI_MODE_NIGHT_YES) | ||
| AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES) | ||
| else | ||
| AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO) | ||
|
|
||
| AppCompatDelegate.getDefaultNightMode() == AppCompatDelegate.MODE_NIGHT_YES | ||
| } else { | ||
| /* | ||
| On the other hand, AppCompatDelegate controls dark theme in scope of | ||
| our application | ||
| */ | ||
| val currentAppUiMode = AppCompatDelegate.getDefaultNightMode() | ||
|
|
||
| when { | ||
| currentAppUiMode == AppCompatDelegate.MODE_NIGHT_YES && isDarkModeEnabled -> { | ||
| /* | ||
| Saved state matches system configuration; | ||
| no need to change anything | ||
| */ | ||
| true | ||
| } | ||
| currentAppUiMode == AppCompatDelegate.MODE_NIGHT_NO && !isDarkModeEnabled -> { | ||
| /* | ||
| Saved state matches system configuration; | ||
| no need to change anything | ||
| */ | ||
| false | ||
| } | ||
| else -> { | ||
| /* | ||
| Something went wrong, saved state is different from system config; | ||
| might happen due to start of the whole application (vs. moving between screens), | ||
| while user system is set to light mode | ||
| */ | ||
|
|
||
| val newUiMode = if (isDarkModeEnabled) | ||
| AppCompatDelegate.MODE_NIGHT_YES else | ||
| AppCompatDelegate.MODE_NIGHT_NO | ||
|
|
||
| AppCompatDelegate.setDefaultNightMode(newUiMode) | ||
|
|
||
| AppCompatDelegate.getDefaultNightMode() == AppCompatDelegate.MODE_NIGHT_YES | ||
| } | ||
| } | ||
| } | ||
| } | ||
| }.flowOn(coroutineManager.main.immediate).stateIn( | ||
| scope = coroutineManager.applicationScope, | ||
| started = SharingStarted.Eagerly, // Eager mode is used to apply changes as soon as possible | ||
| initialValue = AppCompatDelegate.getDefaultNightMode() | ||
| .equals(AppCompatDelegate.MODE_NIGHT_YES) | ||
| ) | ||
|
|
||
| fun updateUiModeFromCache() { | ||
| coroutineManager.applicationScope.launch { | ||
| mutableDarkThemeSharedFlow.emit( | ||
| value = DarkModeSettings( | ||
| isSystemDrivenUiEnabled = soraPreferences.getBoolean( | ||
| field = KEY_SYSTEM_DRIVEN_UI_ENABLED, | ||
| defaultValue = false | ||
| ), | ||
| isDarkModeEnabled = soraPreferences.getBoolean( | ||
| field = KEY_DARK_THEME_ENABLED, | ||
| defaultValue = false | ||
| ) | ||
| ) | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| suspend fun setDarkThemeEnabled(isEnabled: Boolean) { | ||
| val newDarkModeValue = soraPreferences.run { | ||
| putBoolean(KEY_SYSTEM_DRIVEN_UI_ENABLED, false) // deactivate this, if the other is chosen | ||
| putBoolean(KEY_DARK_THEME_ENABLED, isEnabled) | ||
| getBoolean(KEY_DARK_THEME_ENABLED, false) // double check, in case it didn't get saved | ||
| } | ||
|
|
||
| // update listeners with new value | ||
| mutableDarkThemeSharedFlow.emit( | ||
| value = DarkModeSettings( | ||
| isSystemDrivenUiEnabled = false, | ||
| isDarkModeEnabled = newDarkModeValue | ||
| ) | ||
| ) | ||
| } | ||
|
|
||
| suspend fun setSystemDrivenUiEnabled(isEnabled: Boolean) { | ||
| val newDarkModeValue = soraPreferences.run { | ||
| putBoolean(KEY_DARK_THEME_ENABLED, false) // deactivate this, if the other is chosen | ||
| putBoolean(KEY_SYSTEM_DRIVEN_UI_ENABLED, isEnabled) | ||
| getBoolean(KEY_SYSTEM_DRIVEN_UI_ENABLED, false) // double check, in case it didn't get saved | ||
| } | ||
|
|
||
| // update listeners with new value | ||
| mutableDarkThemeSharedFlow.emit( | ||
| value = DarkModeSettings( | ||
| isSystemDrivenUiEnabled = newDarkModeValue, | ||
| isDarkModeEnabled = false | ||
| ) | ||
| ) | ||
| } | ||
|
|
||
| private companion object { | ||
| const val KEY_DARK_THEME_ENABLED = "KEY_DARK_THEME_ENABLED" | ||
| const val KEY_SYSTEM_DRIVEN_UI_ENABLED = "KEY_SYSTEM_DRIVEN_UI_ENABLED" | ||
| } | ||
| } |
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