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Fix preference change listener going away
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app/src/main/java/app/tivi/settings/TiviPreferencesImpl.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| /* | ||
| * Copyright 2018 Google LLC | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package app.tivi.settings | ||
|
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| import android.content.Context | ||
| import android.content.SharedPreferences | ||
| import androidx.appcompat.app.AppCompatDelegate | ||
| import androidx.core.content.edit | ||
| import app.tivi.R | ||
| import app.tivi.settings.TiviPreferences.Theme | ||
| import javax.inject.Inject | ||
| import javax.inject.Named | ||
|
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| class TiviPreferencesImpl @Inject constructor( | ||
| private val context: Context, | ||
| @Named("app") private val sharedPreferences: SharedPreferences | ||
| ) : TiviPreferences { | ||
| private val listener = SharedPreferences.OnSharedPreferenceChangeListener { _, key -> | ||
| when (key) { | ||
| KEY_THEME -> updateUsingThemePreference() | ||
| } | ||
| } | ||
|
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| private val defaultThemeValue = context.getString(R.string.pref_theme_default_value) | ||
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| companion object { | ||
| const val KEY_THEME = "pref_theme" | ||
| } | ||
|
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| override fun setup() { | ||
| updateUsingThemePreference() | ||
| sharedPreferences.registerOnSharedPreferenceChangeListener(listener) | ||
| } | ||
|
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| override var themePreference: Theme | ||
| get() = getThemeForStorageValue(sharedPreferences.getString(KEY_THEME, defaultThemeValue)!!) | ||
| set(value) = sharedPreferences.edit { | ||
| putString(KEY_THEME, getStorageKeyForTheme(value)) | ||
| } | ||
|
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| private fun getStorageKeyForTheme(theme: Theme) = when (theme) { | ||
| Theme.LIGHT -> context.getString(R.string.pref_theme_light_value) | ||
| Theme.DARK -> context.getString(R.string.pref_theme_dark_value) | ||
| Theme.BATTERY_SAVER_ONLY -> context.getString(R.string.pref_theme_battery_value) | ||
| Theme.SYSTEM -> context.getString(R.string.pref_theme_system_value) | ||
| } | ||
|
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| private fun getThemeForStorageValue(value: String) = when (value) { | ||
| context.getString(R.string.pref_theme_system_value) -> Theme.SYSTEM | ||
| context.getString(R.string.pref_theme_light_value) -> Theme.LIGHT | ||
| context.getString(R.string.pref_theme_dark_value) -> Theme.DARK | ||
| context.getString(R.string.pref_theme_battery_value) -> Theme.BATTERY_SAVER_ONLY | ||
| else -> throw IllegalArgumentException("Invalid preference value for theme") | ||
| } | ||
|
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| private fun updateUsingThemePreference() = when (themePreference) { | ||
| Theme.DARK -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES) | ||
| Theme.LIGHT -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO) | ||
| Theme.SYSTEM -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM) | ||
| Theme.BATTERY_SAVER_ONLY -> AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * Copyright 2019 Google LLC | ||
| * | ||
| * 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. | ||
| */ | ||
|
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| package app.tivi.settings | ||
|
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| interface TiviPreferences { | ||
|
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| fun setup() | ||
|
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| val themePreference: Theme | ||
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| enum class Theme { | ||
| LIGHT, | ||
| DARK, | ||
| BATTERY_SAVER_ONLY, | ||
| SYSTEM | ||
| } | ||
| } |