android: Abstract settings

Previously we could only add settings that would change our ini file. Now we can create abstract settings in our presenter to alter things like shared preferences for theme support!

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/AbstractBooleanSetting.kt

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.features.settings.model
+
+interface AbstractBooleanSetting : AbstractSetting {
+    var boolean: Boolean
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/AbstractFloatSetting.kt

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.features.settings.model
+
+interface AbstractFloatSetting : AbstractSetting {
+    var float: Float
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/AbstractIntSetting.kt

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.features.settings.model
+
+interface AbstractIntSetting : AbstractSetting {
+    var int: Int
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/AbstractSetting.kt

@@ -0,0 +1,11 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.features.settings.model
+
+interface AbstractSetting {
+    val key: String?
+    val section: String?
+    val isRuntimeEditable: Boolean
+    val valueAsString: String
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/AbstractStringSetting.kt

@@ -0,0 +1,8 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.features.settings.model
+
+interface AbstractStringSetting : AbstractSetting {
+    var string: String
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/BooleanSetting.kt

@@ -3,10 +3,33 @@
 
 package org.yuzu.yuzu_emu.features.settings.model
 
-class BooleanSetting(
-    key: String,
-    section: String,
-    var value: Boolean
-) : Setting(key, section) {
-    override val valueAsString get() = if (value) "True" else "False"
+enum class BooleanSetting(
+    override val key: String,
+    override val section: String,
+    val defaultValue: Boolean
+) : AbstractBooleanSetting {
+    // No boolean settings currently exist
+    EMPTY_SETTING("", "", false);
+
+    override var boolean: Boolean = defaultValue
+
+    override val valueAsString: String
+        get() = boolean.toString()
+
+    override val isRuntimeEditable: Boolean
+        get() {
+            for (setting in NOT_RUNTIME_EDITABLE) {
+                if (setting == this) {
+                    return false
+                }
+            }
+            return true
+        }
+
+    companion object {
+        private val NOT_RUNTIME_EDITABLE = emptyList<BooleanSetting>()
+
+        fun from(key: String): BooleanSetting? =
+            BooleanSetting.values().firstOrNull { it.key == key }
+    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/FloatSetting.kt

@@ -3,10 +3,32 @@
 
 package org.yuzu.yuzu_emu.features.settings.model
 
-class FloatSetting(
-    key: String,
-    section: String,
-    var value: Float
-) : Setting(key, section) {
-    override val valueAsString get() = value.toString()
+enum class FloatSetting(
+    override val key: String,
+    override val section: String,
+    val defaultValue: Float
+) : AbstractFloatSetting {
+    // No float settings currently exist
+    EMPTY_SETTING("", "", 0f);
+
+    override var float: Float = defaultValue
+
+    override val valueAsString: String
+        get() = float.toString()
+
+    override val isRuntimeEditable: Boolean
+        get() {
+            for (setting in NOT_RUNTIME_EDITABLE) {
+                if (setting == this) {
+                    return false
+                }
+            }
+            return true
+        }
+
+    companion object {
+        private val NOT_RUNTIME_EDITABLE = emptyList<FloatSetting>()
+
+        fun from(key: String): FloatSetting? = FloatSetting.values().firstOrNull { it.key == key }
+    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/IntSetting.kt

@@ -3,10 +3,121 @@
 
 package org.yuzu.yuzu_emu.features.settings.model
 
-class IntSetting(
-    key: String,
-    section: String,
-    var value: Int
-) : Setting(key, section) {
-    override val valueAsString get() = value.toString()
+enum class IntSetting(
+    override val key: String,
+    override val section: String,
+    val defaultValue: Int
+) : AbstractIntSetting {
+    RENDERER_USE_SPEED_LIMIT(
+        "use_speed_limit",
+        Settings.SECTION_RENDERER,
+        1
+    ),
+    USE_DOCKED_MODE(
+        "use_docked_mode",
+        Settings.SECTION_SYSTEM,
+        0
+    ),
+    RENDERER_USE_DISK_SHADER_CACHE(
+        "use_disk_shader_cache",
+        Settings.SECTION_RENDERER,
+        1
+    ),
+    RENDERER_FORCE_MAX_CLOCK(
+        "force_max_clock",
+        Settings.SECTION_RENDERER,
+        1
+    ),
+    RENDERER_ASYNCHRONOUS_SHADERS(
+        "use_asynchronous_shaders",
+        Settings.SECTION_RENDERER,
+        0
+    ),
+    RENDERER_DEBUG(
+        "debug",
+        Settings.SECTION_RENDERER,
+        0
+    ),
+    RENDERER_SPEED_LIMIT(
+        "speed_limit",
+        Settings.SECTION_RENDERER,
+        100
+    ),
+    CPU_ACCURACY(
+        "cpu_accuracy",
+        Settings.SECTION_CPU,
+        0
+    ),
+    REGION_INDEX(
+        "region_index",
+        Settings.SECTION_SYSTEM,
+        -1
+    ),
+    LANGUAGE_INDEX(
+        "language_index",
+        Settings.SECTION_SYSTEM,
+        1
+    ),
+    RENDERER_BACKEND(
+        "backend",
+        Settings.SECTION_RENDERER,
+        1
+    ),
+    RENDERER_ACCURACY(
+        "gpu_accuracy",
+        Settings.SECTION_RENDERER,
+        0
+    ),
+    RENDERER_RESOLUTION(
+        "resolution_setup",
+        Settings.SECTION_RENDERER,
+        2
+    ),
+    RENDERER_SCALING_FILTER(
+        "scaling_filter",
+        Settings.SECTION_RENDERER,
+        1
+    ),
+    RENDERER_ANTI_ALIASING(
+        "anti_aliasing",
+        Settings.SECTION_RENDERER,
+        0
+    ),
+    RENDERER_ASPECT_RATIO(
+        "aspect_ratio",
+        Settings.SECTION_RENDERER,
+        0
+    ),
+    AUDIO_VOLUME(
+        "volume",
+        Settings.SECTION_AUDIO,
+        100
+    );
+
+    override var int: Int = defaultValue
+
+    override val valueAsString: String
+        get() = int.toString()
+
+    override val isRuntimeEditable: Boolean
+        get() {
+            for (setting in NOT_RUNTIME_EDITABLE) {
+                if (setting == this) {
+                    return false
+                }
+            }
+            return true
+        }
+
+    companion object {
+        private val NOT_RUNTIME_EDITABLE = listOf(
+            RENDERER_USE_DISK_SHADER_CACHE,
+            RENDERER_ASYNCHRONOUS_SHADERS,
+            RENDERER_DEBUG,
+            RENDERER_BACKEND,
+            RENDERER_RESOLUTION
+        )
+
+        fun from(key: String): IntSetting? = IntSetting.values().firstOrNull { it.key == key }
+    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/Setting.kt

@@ -1,27 +0,0 @@
-// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package org.yuzu.yuzu_emu.features.settings.model
-
-/**
- * Abstraction for a setting item as read from / written to yuzu's configuration ini files.
- * These files generally consist of a key/value pair, though the type of value is ambiguous and
- * must be inferred at read-time. The type of value determines which child of this class is used
- * to represent the Setting.
- */
-abstract class Setting(
-    /**
-     * @return The identifier used to write this setting to the ini file.
-     */
-    val key: String,
-    /**
-     * @return The name of the header under which this Setting should be written in the ini file.
-     */
-    val section: String
-) {
-
-    /**
-     * @return A representation of this Setting's backing value converted to a String (e.g. for serialization).
-     */
-    abstract val valueAsString: String
-}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/SettingSection.kt

@@ -8,15 +8,15 @@ package org.yuzu.yuzu_emu.features.settings.model
  * internally stored as a HashMap.
  */
 class SettingSection(val name: String) {
-    val settings = HashMap<String, Setting>()
+    val settings = HashMap<String, AbstractSetting>()
 
     /**
      * Convenience method; inserts a value directly into the backing HashMap.
      *
      * @param setting The Setting to be inserted.
      */
-    fun putSetting(setting: Setting) {
-        settings[setting.key] = setting
+    fun putSetting(setting: AbstractSetting) {
+        settings[setting.key!!] = setting
     }
 
     /**
@@ -25,7 +25,7 @@ class SettingSection(val name: String) {
      * @param key Used to retrieve the Setting.
      * @return A Setting object (you should probably cast this before using)
      */
-    fun getSetting(key: String): Setting? {
+    fun getSetting(key: String): AbstractSetting? {
         return settings[key]
     }
 

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/StringSetting.kt

@@ -3,10 +3,32 @@
 
 package org.yuzu.yuzu_emu.features.settings.model
 
-class StringSetting(
-    key: String,
-    section: String,
-    var value: String
-) : Setting(key, section) {
-    override val valueAsString get() = value
+enum class StringSetting(
+    override val key: String,
+    override val section: String,
+    defaultValue: String
+) : AbstractStringSetting {
+    // No string settings currently exist
+    EMPTY_SETTING("", "", "");
+
+    override var string: String = defaultValue
+
+    override val valueAsString: String
+        get() = string
+
+    override val isRuntimeEditable: Boolean
+        get() {
+            for (setting in NOT_RUNTIME_EDITABLE) {
+                if (setting == this) {
+                    return false
+                }
+            }
+            return true
+        }
+
+    companion object {
+        private val NOT_RUNTIME_EDITABLE = emptyList<StringSetting>()
+
+        fun from(key: String): StringSetting? = StringSetting.values().firstOrNull { it.key == key }
+    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/DateTimeSetting.kt

@@ -3,36 +3,30 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
-import org.yuzu.yuzu_emu.features.settings.model.Setting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractStringSetting
 import org.yuzu.yuzu_emu.features.settings.model.StringSetting
 
 class DateTimeSetting(
-    key: String,
-    section: String,
+    val key: String? = null,
+    setting: AbstractSetting?,
     titleId: Int,
     descriptionId: Int,
-    private val defaultValue: String,
-    setting: Setting
-) : SettingsItem(key, section, setting, titleId, descriptionId) {
+    private val defaultValue: String? = null
+) : SettingsItem(setting, titleId, descriptionId) {
     override val type = TYPE_DATETIME_SETTING
 
     val value: String
         get() = if (setting != null) {
             val setting = setting as StringSetting
-            setting.value
+            setting.string
         } else {
-            defaultValue
+            defaultValue!!
         }
 
-    fun setSelectedValue(datetime: String): StringSetting? {
-        return if (setting == null) {
-            val newSetting = StringSetting(key!!, section!!, datetime)
-            setting = newSetting
-            newSetting
-        } else {
-            val newSetting = setting as StringSetting
-            newSetting.value = datetime
-            null
-        }
+    fun setSelectedValue(datetime: String): AbstractStringSetting {
+        val stringSetting = setting as AbstractStringSetting
+        stringSetting.string = datetime
+        return stringSetting
     }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/HeaderSetting.kt

@@ -3,13 +3,12 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
-import org.yuzu.yuzu_emu.features.settings.model.Setting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
 
 class HeaderSetting(
-    key: String?,
-    setting: Setting?,
+    setting: AbstractSetting?,
     titleId: Int,
     descriptionId: Int?
-) : SettingsItem(key, null, setting, titleId, descriptionId) {
+) : SettingsItem(setting, titleId, descriptionId) {
     override val type = TYPE_HEADER
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SettingsItem.kt

@@ -3,19 +3,17 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
-import org.yuzu.yuzu_emu.features.settings.model.Setting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
 
 /**
  * ViewModel abstraction for an Item in the RecyclerView powering SettingsFragments.
- * Each one corresponds to a [Setting] object, so this class's subclasses
+ * Each one corresponds to a [AbstractSetting] object, so this class's subclasses
  * should vaguely correspond to those subclasses. There are a few with multiple analogues
  * and a few with none (Headers, for example, do not correspond to anything in the ini
  * file.)
  */
 abstract class SettingsItem(
-    val key: String?,
-    val section: String?,
-    var setting: Setting?,
+    var setting: AbstractSetting?,
     val nameId: Int,
     val descriptionId: Int?
 ) {

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SingleChoiceSetting.kt

@@ -3,27 +3,26 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
+import org.yuzu.yuzu_emu.features.settings.model.AbstractIntSetting
 import org.yuzu.yuzu_emu.features.settings.model.IntSetting
-import org.yuzu.yuzu_emu.features.settings.model.Setting
 
 class SingleChoiceSetting(
-    key: String,
-    section: String,
-    setting: Setting?,
+    setting: AbstractIntSetting?,
     titleId: Int,
     descriptionId: Int,
     val choicesId: Int,
     val valuesId: Int,
-    private val defaultValue: Int,
-) : SettingsItem(key, section, setting, titleId, descriptionId) {
+    val key: String? = null,
+    val defaultValue: Int? = null
+) : SettingsItem(setting, titleId, descriptionId) {
     override val type = TYPE_SINGLE_CHOICE
 
     val selectedValue: Int
         get() = if (setting != null) {
             val setting = setting as IntSetting
-            setting.value
+            setting.int
         } else {
-            defaultValue
+            defaultValue!!
         }
 
     /**
@@ -31,17 +30,11 @@ class SingleChoiceSetting(
      * initializes a new one and returns it, so it can be added to the Hashmap.
      *
      * @param selection New value of the int.
-     * @return null if overwritten successfully otherwise; a newly created IntSetting.
+     * @return the existing setting with the new value applied.
      */
-    fun setSelectedValue(selection: Int): IntSetting? {
-        return if (setting == null) {
-            val newSetting = IntSetting(key!!, section!!, selection)
-            setting = newSetting
-            newSetting
-        } else {
-            val newSetting = setting as IntSetting
-            newSetting.value = selection
-            null
-        }
+    fun setSelectedValue(selection: Int): AbstractIntSetting {
+        val intSetting = setting as AbstractIntSetting
+        intSetting.int = selection
+        return intSetting
     }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SliderSetting.kt

@@ -3,31 +3,32 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
+import org.yuzu.yuzu_emu.features.settings.model.AbstractFloatSetting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractIntSetting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
 import org.yuzu.yuzu_emu.features.settings.model.FloatSetting
 import org.yuzu.yuzu_emu.features.settings.model.IntSetting
-import org.yuzu.yuzu_emu.features.settings.model.Setting
 import org.yuzu.yuzu_emu.utils.Log
 import kotlin.math.roundToInt
 
 class SliderSetting(
-    key: String,
-    section: String,
-    setting: Setting?,
+    setting: AbstractSetting?,
     titleId: Int,
     descriptionId: Int,
     val min: Int,
     val max: Int,
     val units: String,
-    val defaultValue: Int,
-) : SettingsItem(key, section, setting, titleId, descriptionId) {
+    val key: String? = null,
+    val defaultValue: Int? = null,
+) : SettingsItem(setting, titleId, descriptionId) {
     override val type = TYPE_SLIDER
 
     val selectedValue: Int
         get() {
-            val setting = setting ?: return defaultValue
+            val setting = setting ?: return defaultValue!!
             return when (setting) {
-                is IntSetting -> setting.value
-                is FloatSetting -> setting.value.roundToInt()
+                is IntSetting -> setting.int
+                is FloatSetting -> setting.float.roundToInt()
                 else -> {
                     Log.error("[SliderSetting] Error casting setting type.")
                     -1
@@ -40,18 +41,12 @@ class SliderSetting(
      * initializes a new one and returns it, so it can be added to the Hashmap.
      *
      * @param selection New value of the int.
-     * @return null if overwritten successfully otherwise; a newly created IntSetting.
+     * @return the existing setting with the new value applied.
      */
-    fun setSelectedValue(selection: Int): IntSetting? {
-        return if (setting == null) {
-            val newSetting = IntSetting(key!!, section!!, selection)
-            setting = newSetting
-            newSetting
-        } else {
-            val newSetting = setting as IntSetting
-            newSetting.value = selection
-            null
-        }
+    fun setSelectedValue(selection: Int): AbstractIntSetting {
+        val intSetting = setting as AbstractIntSetting
+        intSetting.int = selection
+        return intSetting
     }
 
     /**
@@ -59,17 +54,11 @@ class SliderSetting(
      * initializes a new one and returns it, so it can be added to the Hashmap.
      *
      * @param selection New value of the float.
-     * @return null if overwritten successfully otherwise; a newly created FloatSetting.
+     * @return the existing setting with the new value applied.
      */
-    fun setSelectedValue(selection: Float): FloatSetting? {
-        return if (setting == null) {
-            val newSetting = FloatSetting(key!!, section!!, selection)
-            setting = newSetting
-            newSetting
-        } else {
-            val newSetting = setting as FloatSetting
-            newSetting.value = selection
-            null
-        }
+    fun setSelectedValue(selection: Float): AbstractFloatSetting {
+        val floatSetting = setting as AbstractFloatSetting
+        floatSetting.float = selection
+        return floatSetting
     }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/StringSingleChoiceSetting.kt

@@ -3,19 +3,19 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
-import org.yuzu.yuzu_emu.features.settings.model.Setting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractStringSetting
 import org.yuzu.yuzu_emu.features.settings.model.StringSetting
 
 class StringSingleChoiceSetting(
-    key: String,
-    section: String,
-    setting: Setting?,
+    val key: String? = null,
+    setting: AbstractSetting?,
     titleId: Int,
     descriptionId: Int,
     val choicesId: Array<String>,
     private val valuesId: Array<String>?,
-    private val defaultValue: String
-) : SettingsItem(key, section, setting, titleId, descriptionId) {
+    private val defaultValue: String? = null
+) : SettingsItem(setting, titleId, descriptionId) {
     override val type = TYPE_STRING_SINGLE_CHOICE
 
     fun getValueAt(index: Int): String? {
@@ -28,9 +28,9 @@ class StringSingleChoiceSetting(
     val selectedValue: String
         get() = if (setting != null) {
             val setting = setting as StringSetting
-            setting.value
+            setting.string
         } else {
-            defaultValue
+            defaultValue!!
         }
     val selectValueIndex: Int
         get() {
@@ -48,17 +48,11 @@ class StringSingleChoiceSetting(
      * initializes a new one and returns it, so it can be added to the Hashmap.
      *
      * @param selection New value of the int.
-     * @return null if overwritten successfully otherwise; a newly created IntSetting.
+     * @return the existing setting with the new value applied.
      */
-    fun setSelectedValue(selection: String?): StringSetting? {
-        return if (setting == null) {
-            val newSetting = StringSetting(key!!, section!!, selection!!)
-            setting = newSetting
-            newSetting
-        } else {
-            val newSetting = setting as StringSetting
-            newSetting.value = selection!!
-            null
-        }
+    fun setSelectedValue(selection: String): AbstractStringSetting {
+        val stringSetting = setting as AbstractStringSetting
+        stringSetting.string = selection
+        return stringSetting
     }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SubmenuSetting.kt

@@ -3,16 +3,13 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
-import org.yuzu.yuzu_emu.features.settings.model.Setting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
 
 class SubmenuSetting(
-    key: String?,
-    setting: Setting?,
+    setting: AbstractSetting?,
     titleId: Int,
     descriptionId: Int,
     val menuKey: String
-) : SettingsItem(
-    key, null, setting, titleId, descriptionId
-) {
+) : SettingsItem(setting, titleId, descriptionId) {
     override val type = TYPE_SUBMENU
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SwitchSetting.kt

@@ -3,67 +3,42 @@
 
 package org.yuzu.yuzu_emu.features.settings.model.view
 
-import org.yuzu.yuzu_emu.R
-import org.yuzu.yuzu_emu.YuzuApplication
+import org.yuzu.yuzu_emu.features.settings.model.AbstractBooleanSetting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractIntSetting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
 import org.yuzu.yuzu_emu.features.settings.model.BooleanSetting
 import org.yuzu.yuzu_emu.features.settings.model.IntSetting
-import org.yuzu.yuzu_emu.features.settings.model.Setting
-import org.yuzu.yuzu_emu.features.settings.ui.SettingsFragmentView
+import org.yuzu.yuzu_emu.utils.Log
 
-class SwitchSetting : SettingsItem {
+class SwitchSetting(
+    setting: AbstractSetting,
+    titleId: Int,
+    descriptionId: Int,
+    val key: String? = null,
+    val defaultValue: Boolean? = null
+) : SettingsItem(setting, titleId, descriptionId) {
     override val type = TYPE_SWITCH
 
-    private var defaultValue: Boolean
-    private var showPerformanceWarning: Boolean
-    private var fragmentView: SettingsFragmentView? = null
-
-    constructor(
-        key: String,
-        section: String,
-        setting: Setting?,
-        titleId: Int,
-        descriptionId: Int,
-        defaultValue: Boolean
-    ) : super(key, section, setting, titleId, descriptionId) {
-        this.defaultValue = defaultValue
-        showPerformanceWarning = false
-    }
-
-    constructor(
-        key: String,
-        section: String,
-        titleId: Int,
-        descriptionId: Int,
-        defaultValue: Boolean,
-        setting: Setting,
-        show_performance_warning: Boolean,
-        view: SettingsFragmentView
-    ) : super(key, section, setting, titleId, descriptionId) {
-        this.defaultValue = defaultValue
-        fragmentView = view
-        showPerformanceWarning = show_performance_warning
-    }
-
     val isChecked: Boolean
         get() {
             if (setting == null) {
-                return defaultValue
+                return defaultValue!!
             }
 
             // Try integer setting
             try {
-                val setting = setting as IntSetting
-                return setting.value == 1
+                val setting = setting as AbstractIntSetting
+                return setting.int == 1
             } catch (_: ClassCastException) {
             }
 
             // Try boolean setting
             try {
-                val setting = setting as BooleanSetting
-                return setting.value
+                val setting = setting as AbstractBooleanSetting
+                return setting.boolean
             } catch (_: ClassCastException) {
             }
-            return defaultValue
+            return defaultValue!!
         }
 
     /**
@@ -71,24 +46,20 @@ class SwitchSetting : SettingsItem {
      * initializes a new one and returns it, so it can be added to the Hashmap.
      *
      * @param checked Pretty self explanatory.
-     * @return null if overwritten successfully; otherwise, a newly created BooleanSetting.
+     * @return the existing setting with the new value applied.
      */
-    fun setChecked(checked: Boolean): IntSetting? {
-        // Show a performance warning if the setting has been disabled
-        if (showPerformanceWarning && !checked) {
-            fragmentView!!.showToastMessage(
-                YuzuApplication.appContext.getString(R.string.performance_warning), true
-            )
+    fun setChecked(checked: Boolean): AbstractSetting {
+        // Try integer setting
+        try {
+            val setting = setting as AbstractIntSetting
+            setting.int = if (checked) 1 else 0
+            return setting
+        } catch (_: ClassCastException) {
         }
 
-        return if (setting == null) {
-            val newSetting = IntSetting(key!!, section!!, if (checked) 1 else 0)
-            setting = newSetting
-            newSetting
-        } else {
-            val newSetting = setting as IntSetting
-            newSetting.value = if (checked) 1 else 0
-            null
-        }
+        // Try boolean setting
+        val setting = setting as AbstractBooleanSetting
+        setting.boolean = checked
+        return setting
     }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsAdapter.kt

@@ -101,9 +101,7 @@ class SettingsAdapter(
 
     fun onBooleanClick(item: SwitchSetting, position: Int, checked: Boolean) {
         val setting = item.setChecked(checked)
-        if (setting != null) {
-            fragmentView.putSetting(setting)
-        }
+        fragmentView.putSetting(setting)
         fragmentView.onSettingChanged()
     }
 
@@ -209,7 +207,7 @@ class SettingsAdapter(
             .setPositiveButton(android.R.string.ok, this)
             .setNegativeButton(android.R.string.cancel, defaultCancelListener)
             .setNeutralButton(R.string.slider_default) { dialog: DialogInterface, which: Int ->
-                sliderBinding.slider.value = item.defaultValue.toFloat()
+                sliderBinding.slider.value = item.defaultValue!!.toFloat()
                 onClick(dialog, which)
             }
             .show()
@@ -230,19 +228,15 @@ class SettingsAdapter(
 
                 // Get the backing Setting, which may be null (if for example it was missing from the file)
                 val setting = scSetting.setSelectedValue(value)
-                if (setting != null) {
-                    fragmentView.putSetting(setting)
-                }
+                fragmentView.putSetting(setting)
                 closeDialog()
             }
             is StringSingleChoiceSetting -> {
                 val scSetting = clickedItem as StringSingleChoiceSetting
                 val value = scSetting.getValueAt(which)
                 if (scSetting.selectedValue != value) fragmentView.onSettingChanged()
-                val setting = scSetting.setSelectedValue(value)
-                if (setting != null) {
-                    fragmentView.putSetting(setting)
-                }
+                val setting = scSetting.setSelectedValue(value!!)
+                fragmentView.putSetting(setting)
                 closeDialog()
             }
             is SliderSetting -> {
@@ -253,14 +247,10 @@ class SettingsAdapter(
                 if (sliderSetting.setting is FloatSetting) {
                     val value = sliderProgress.toFloat()
                     val setting = sliderSetting.setSelectedValue(value)
-                    if (setting != null) {
-                        fragmentView.putSetting(setting)
-                    }
+                    fragmentView.putSetting(setting)
                 } else {
                     val setting = sliderSetting.setSelectedValue(sliderProgress)
-                    if (setting != null) {
-                        fragmentView.putSetting(setting)
-                    }
+                    fragmentView.putSetting(setting)
                 }
                 closeDialog()
             }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragment.kt

@@ -15,8 +15,7 @@ import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.google.android.material.divider.MaterialDividerItemDecoration
 import org.yuzu.yuzu_emu.databinding.FragmentSettingsBinding
-import org.yuzu.yuzu_emu.features.settings.model.Setting
-import org.yuzu.yuzu_emu.features.settings.model.Settings
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
 import org.yuzu.yuzu_emu.features.settings.model.view.SettingsItem
 
 class SettingsFragment : Fragment(), SettingsFragmentView {
@@ -91,7 +90,7 @@ class SettingsFragment : Fragment(), SettingsFragmentView {
         activityView!!.showToastMessage(message!!, is_long)
     }
 
-    override fun putSetting(setting: Setting) {
+    override fun putSetting(setting: AbstractSetting) {
         fragmentPresenter.putSetting(setting)
     }
 

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -6,7 +6,9 @@ package org.yuzu.yuzu_emu.features.settings.ui
 import android.text.TextUtils
 import androidx.appcompat.app.AppCompatActivity
 import org.yuzu.yuzu_emu.R
-import org.yuzu.yuzu_emu.features.settings.model.Setting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
+import org.yuzu.yuzu_emu.features.settings.model.BooleanSetting
+import org.yuzu.yuzu_emu.features.settings.model.IntSetting
 import org.yuzu.yuzu_emu.features.settings.model.Settings
 import org.yuzu.yuzu_emu.features.settings.model.view.*
 import org.yuzu.yuzu_emu.features.settings.utils.SettingsFile
@@ -28,8 +30,11 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
         loadSettingsList()
     }
 
-    fun putSetting(setting: Setting) {
-        settings.getSection(setting.section)!!.putSetting(setting)
+    fun putSetting(setting: AbstractSetting) {
+        val section = settings.getSection(setting.section!!)!!
+        if (section.getSetting(setting.key!!) == null) {
+            section.putSetting(setting)
+        }
     }
 
     fun loadSettingsList() {
@@ -60,7 +65,6 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
         sl.apply {
             add(
                 SubmenuSetting(
-                    null,
                     null,
                     R.string.preferences_general,
                     0,
@@ -69,7 +73,6 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
             )
             add(
                 SubmenuSetting(
-                    null,
                     null,
                     R.string.preferences_system,
                     0,
@@ -78,7 +81,6 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
             )
             add(
                 SubmenuSetting(
-                    null,
                     null,
                     R.string.preferences_graphics,
                     0,
@@ -87,7 +89,6 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
             )
             add(
                 SubmenuSetting(
-                    null,
                     null,
                     R.string.preferences_audio,
                     0,
@@ -99,45 +100,36 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
 
     private fun addGeneralSettings(sl: ArrayList<SettingsItem>) {
         settingsActivity.setTitle(R.string.preferences_general)
-        val rendererSection = settings.getSection(Settings.SECTION_RENDERER)
-        val frameLimitEnable =
-            rendererSection!!.getSetting(SettingsFile.KEY_RENDERER_USE_SPEED_LIMIT)
-        val frameLimitValue = rendererSection.getSetting(SettingsFile.KEY_RENDERER_SPEED_LIMIT)
-        val cpuSection = settings.getSection(Settings.SECTION_CPU)
-        val cpuAccuracy = cpuSection!!.getSetting(SettingsFile.KEY_CPU_ACCURACY)
         sl.apply {
             add(
                 SwitchSetting(
-                    SettingsFile.KEY_RENDERER_USE_SPEED_LIMIT,
-                    Settings.SECTION_RENDERER,
-                    frameLimitEnable,
+                    IntSetting.RENDERER_USE_SPEED_LIMIT,
                     R.string.frame_limit_enable,
                     R.string.frame_limit_enable_description,
+                    IntSetting.RENDERER_USE_SPEED_LIMIT.key,
                     true
                 )
             )
             add(
                 SliderSetting(
-                    SettingsFile.KEY_RENDERER_SPEED_LIMIT,
-                    Settings.SECTION_RENDERER,
-                    frameLimitValue,
+                    IntSetting.RENDERER_SPEED_LIMIT,
                     R.string.frame_limit_slider,
                     R.string.frame_limit_slider_description,
                     1,
                     200,
                     "%",
+                    IntSetting.RENDERER_SPEED_LIMIT.key,
                     100
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_CPU_ACCURACY,
-                    Settings.SECTION_CPU,
-                    cpuAccuracy,
+                    IntSetting.CPU_ACCURACY,
                     R.string.cpu_accuracy,
                     0,
                     R.array.cpuAccuracyNames,
                     R.array.cpuAccuracyValues,
+                    IntSetting.CPU_ACCURACY.key,
                     0
                 )
             )
@@ -146,42 +138,35 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
 
     private fun addSystemSettings(sl: ArrayList<SettingsItem>) {
         settingsActivity.setTitle(R.string.preferences_system)
-        val systemSection = settings.getSection(Settings.SECTION_SYSTEM)
-        val dockedMode = systemSection!!.getSetting(SettingsFile.KEY_USE_DOCKED_MODE)
-        val region = systemSection.getSetting(SettingsFile.KEY_REGION_INDEX)
-        val language = systemSection.getSetting(SettingsFile.KEY_LANGUAGE_INDEX)
         sl.apply {
             add(
                 SwitchSetting(
-                    SettingsFile.KEY_USE_DOCKED_MODE,
-                    Settings.SECTION_SYSTEM,
-                    dockedMode,
+                    IntSetting.USE_DOCKED_MODE,
                     R.string.use_docked_mode,
                     R.string.use_docked_mode_description,
-                    false,
+                    IntSetting.USE_DOCKED_MODE.key,
+                    false
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_REGION_INDEX,
-                    Settings.SECTION_SYSTEM,
-                    region,
+                    IntSetting.REGION_INDEX,
                     R.string.emulated_region,
                     0,
                     R.array.regionNames,
                     R.array.regionValues,
+                    IntSetting.REGION_INDEX.key,
                     -1
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_LANGUAGE_INDEX,
-                    Settings.SECTION_SYSTEM,
-                    language,
+                    IntSetting.LANGUAGE_INDEX,
                     R.string.emulated_language,
                     0,
                     R.array.languageNames,
                     R.array.languageValues,
+                    IntSetting.LANGUAGE_INDEX.key,
                     1
                 )
             )
@@ -190,133 +175,106 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
 
     private fun addGraphicsSettings(sl: ArrayList<SettingsItem>) {
         settingsActivity.setTitle(R.string.preferences_graphics)
-        val rendererSection = settings.getSection(Settings.SECTION_RENDERER)
-        val rendererBackend = rendererSection!!.getSetting(SettingsFile.KEY_RENDERER_BACKEND)
-        val rendererAccuracy = rendererSection.getSetting(SettingsFile.KEY_RENDERER_ACCURACY)
-        val rendererResolution = rendererSection.getSetting(SettingsFile.KEY_RENDERER_RESOLUTION)
-        val rendererScalingFilter =
-            rendererSection.getSetting(SettingsFile.KEY_RENDERER_SCALING_FILTER)
-        val rendererAntiAliasing =
-            rendererSection.getSetting(SettingsFile.KEY_RENDERER_ANTI_ALIASING)
-        val rendererAspectRatio =
-            rendererSection.getSetting(SettingsFile.KEY_RENDERER_ASPECT_RATIO)
-        val rendererUseDiskShaderCache =
-            rendererSection.getSetting(SettingsFile.KEY_RENDERER_USE_DISK_SHADER_CACHE)
-        val rendererForceMaxClocks =
-            rendererSection.getSetting(SettingsFile.KEY_RENDERER_FORCE_MAX_CLOCK)
-        val rendererAsynchronousShaders =
-            rendererSection.getSetting(SettingsFile.KEY_RENDERER_ASYNCHRONOUS_SHADERS)
-        val rendererDebug = rendererSection.getSetting(SettingsFile.KEY_RENDERER_DEBUG)
         sl.apply {
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_RENDERER_BACKEND,
-                    Settings.SECTION_RENDERER,
-                    rendererBackend,
+                    IntSetting.RENDERER_BACKEND,
                     R.string.renderer_api,
                     0,
                     R.array.rendererApiNames,
                     R.array.rendererApiValues,
+                    IntSetting.RENDERER_BACKEND.key,
                     1
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_RENDERER_ACCURACY,
-                    Settings.SECTION_RENDERER,
-                    rendererAccuracy,
+                    IntSetting.RENDERER_ACCURACY,
                     R.string.renderer_accuracy,
                     0,
                     R.array.rendererAccuracyNames,
                     R.array.rendererAccuracyValues,
+                    IntSetting.RENDERER_ACCURACY.key,
                     0
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_RENDERER_RESOLUTION,
-                    Settings.SECTION_RENDERER,
-                    rendererResolution,
+                    IntSetting.RENDERER_RESOLUTION,
                     R.string.renderer_resolution,
                     0,
                     R.array.rendererResolutionNames,
                     R.array.rendererResolutionValues,
+                    IntSetting.RENDERER_RESOLUTION.key,
                     2
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_RENDERER_SCALING_FILTER,
-                    Settings.SECTION_RENDERER,
-                    rendererScalingFilter,
+                    IntSetting.RENDERER_SCALING_FILTER,
                     R.string.renderer_scaling_filter,
                     0,
                     R.array.rendererScalingFilterNames,
                     R.array.rendererScalingFilterValues,
+                    IntSetting.RENDERER_SCALING_FILTER.key,
                     1
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_RENDERER_ANTI_ALIASING,
-                    Settings.SECTION_RENDERER,
-                    rendererAntiAliasing,
+                    IntSetting.RENDERER_ANTI_ALIASING,
                     R.string.renderer_anti_aliasing,
                     0,
                     R.array.rendererAntiAliasingNames,
                     R.array.rendererAntiAliasingValues,
+                    IntSetting.RENDERER_ANTI_ALIASING.key,
                     0
                 )
             )
             add(
                 SingleChoiceSetting(
-                    SettingsFile.KEY_RENDERER_ASPECT_RATIO,
-                    Settings.SECTION_RENDERER,
-                    rendererAspectRatio,
+                    IntSetting.RENDERER_ASPECT_RATIO,
                     R.string.renderer_aspect_ratio,
                     0,
                     R.array.rendererAspectRatioNames,
                     R.array.rendererAspectRatioValues,
+                    IntSetting.RENDERER_ASPECT_RATIO.key,
                     0
                 )
             )
             add(
                 SwitchSetting(
-                    SettingsFile.KEY_RENDERER_USE_DISK_SHADER_CACHE,
-                    Settings.SECTION_RENDERER,
-                    rendererUseDiskShaderCache,
+                    IntSetting.RENDERER_USE_DISK_SHADER_CACHE,
                     R.string.use_disk_shader_cache,
                     R.string.use_disk_shader_cache_description,
+                    IntSetting.RENDERER_USE_DISK_SHADER_CACHE.key,
                     true
                 )
             )
             add(
                 SwitchSetting(
-                    SettingsFile.KEY_RENDERER_FORCE_MAX_CLOCK,
-                    Settings.SECTION_RENDERER,
-                    rendererForceMaxClocks,
+                    IntSetting.RENDERER_FORCE_MAX_CLOCK,
                     R.string.renderer_force_max_clock,
                     R.string.renderer_force_max_clock_description,
+                    IntSetting.RENDERER_FORCE_MAX_CLOCK.key,
                     true
                 )
             )
             add(
                 SwitchSetting(
-                    SettingsFile.KEY_RENDERER_ASYNCHRONOUS_SHADERS,
-                    Settings.SECTION_RENDERER,
-                    rendererAsynchronousShaders,
+                    IntSetting.RENDERER_ASYNCHRONOUS_SHADERS,
                     R.string.renderer_asynchronous_shaders,
                     R.string.renderer_asynchronous_shaders_description,
+                    IntSetting.RENDERER_ASYNCHRONOUS_SHADERS.key,
                     false
                 )
             )
             add(
                 SwitchSetting(
-                    SettingsFile.KEY_RENDERER_DEBUG,
-                    Settings.SECTION_RENDERER,
-                    rendererDebug,
+                    IntSetting.RENDERER_DEBUG,
                     R.string.renderer_debug,
                     R.string.renderer_debug_description,
+                    IntSetting.RENDERER_DEBUG.key,
                     false
                 )
             )
@@ -325,18 +283,15 @@ class SettingsFragmentPresenter(private val fragmentView: SettingsFragmentView)
 
     private fun addAudioSettings(sl: ArrayList<SettingsItem>) {
         settingsActivity.setTitle(R.string.preferences_audio)
-        val audioSection = settings.getSection(Settings.SECTION_AUDIO)
-        val audioVolume = audioSection!!.getSetting(SettingsFile.KEY_AUDIO_VOLUME)
         sl.add(
             SliderSetting(
-                SettingsFile.KEY_AUDIO_VOLUME,
-                Settings.SECTION_AUDIO,
-                audioVolume,
+                IntSetting.AUDIO_VOLUME,
                 R.string.audio_volume,
                 R.string.audio_volume_description,
                 0,
                 100,
                 "%",
+                IntSetting.AUDIO_VOLUME.key,
                 100
             )
         )

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragmentView.kt

@@ -3,7 +3,7 @@
 
 package org.yuzu.yuzu_emu.features.settings.ui
 
-import org.yuzu.yuzu_emu.features.settings.model.Setting
+import org.yuzu.yuzu_emu.features.settings.model.AbstractSetting
 import org.yuzu.yuzu_emu.features.settings.model.view.SettingsItem
 
 /**
@@ -49,7 +49,7 @@ interface SettingsFragmentView {
      *
      * @param setting The (possibly previously missing) new setting.
      */
-    fun putSetting(setting: Setting)
+    fun putSetting(setting: AbstractSetting)
 
     /**
      * Have the fragment tell the containing Activity that a setting was modified.

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/utils/SettingsFile.kt

@@ -21,32 +21,7 @@ import java.util.*
  */
 object SettingsFile {
     const val FILE_NAME_CONFIG = "config"
-    const val KEY_DESIGN = "design"
-
-    // CPU
-    const val KEY_CPU_ACCURACY = "cpu_accuracy"
-
-    // System
-    const val KEY_USE_DOCKED_MODE = "use_docked_mode"
-    const val KEY_REGION_INDEX = "region_index"
-    const val KEY_LANGUAGE_INDEX = "language_index"
-    const val KEY_RENDERER_BACKEND = "backend"
-
-    // Renderer
-    const val KEY_RENDERER_RESOLUTION = "resolution_setup"
-    const val KEY_RENDERER_SCALING_FILTER = "scaling_filter"
-    const val KEY_RENDERER_ANTI_ALIASING = "anti_aliasing"
-    const val KEY_RENDERER_ASPECT_RATIO = "aspect_ratio"
-    const val KEY_RENDERER_ACCURACY = "gpu_accuracy"
-    const val KEY_RENDERER_USE_DISK_SHADER_CACHE = "use_disk_shader_cache"
-    const val KEY_RENDERER_ASYNCHRONOUS_SHADERS = "use_asynchronous_shaders"
-    const val KEY_RENDERER_FORCE_MAX_CLOCK = "force_max_clock"
-    const val KEY_RENDERER_USE_SPEED_LIMIT = "use_speed_limit"
-    const val KEY_RENDERER_DEBUG = "debug"
-    const val KEY_RENDERER_SPEED_LIMIT = "speed_limit"
-
-    // Audio
-    const val KEY_AUDIO_VOLUME = "volume"
+
     private val sectionsMap = BiMap<String?, String?>()
 
     /**
@@ -75,7 +50,7 @@ object SettingsFile {
                     current = sectionFromLine(line!!, isCustomGame)
                     sections[current.name] = current
                 } else if (current != null) {
-                    val setting = settingFromLine(current, line!!)
+                    val setting = settingFromLine(line!!)
                     if (setting != null) {
                         current.putSetting(setting)
                     }
@@ -201,11 +176,10 @@ object SettingsFile {
      * For a line of text, determines what type of data is being represented, and returns
      * a Setting object containing this data.
      *
-     * @param current The section currently being parsed by the consuming method.
      * @param line    The line of text being parsed.
      * @return A typed Setting containing the key/value contained in the line.
      */
-    private fun settingFromLine(current: SettingSection, line: String): Setting? {
+    private fun settingFromLine(line: String): AbstractSetting? {
         val splitLine = line.split("=".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
         if (splitLine.size != 2) {
             Log.warning("Skipping invalid config line \"$line\"")
@@ -217,17 +191,25 @@ object SettingsFile {
             Log.warning("Skipping null value in config line \"$line\"")
             return null
         }
-        try {
-            val valueAsInt = value.toInt()
-            return IntSetting(key, current.name, valueAsInt)
-        } catch (_: NumberFormatException) {
+
+        val booleanSetting = BooleanSetting.from(key)
+        if (booleanSetting != null) {
+            booleanSetting.boolean = value.toBoolean()
+            return booleanSetting
         }
-        try {
-            val valueAsFloat = value.toFloat()
-            return FloatSetting(key, current.name, valueAsFloat)
-        } catch (_: NumberFormatException) {
+
+        val intSetting = IntSetting.from(key)
+        if (intSetting != null) {
+            intSetting.int = value.toInt()
+            return intSetting
+        }
+
+        val floatSetting = FloatSetting.from(key)
+        if (floatSetting != null) {
+            floatSetting.float = value.toFloat()
+            return floatSetting
         }
-        return StringSetting(key, current.name, value)
+        return StringSetting.from(key)
     }
 
     /**