android: Convert DateTimeSetting to Kotlin

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

@@ -1,40 +0,0 @@
-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.StringSetting;
-
-public final class DateTimeSetting extends SettingsItem {
-    private String mDefaultValue;
-
-    public DateTimeSetting(String key, String section, int titleId, int descriptionId,
-                           String defaultValue, Setting setting) {
-        super(key, section, setting, titleId, descriptionId);
-        mDefaultValue = defaultValue;
-    }
-
-    public String getValue() {
-        if (getSetting() != null) {
-            StringSetting setting = (StringSetting) getSetting();
-            return setting.getValue();
-        } else {
-            return mDefaultValue;
-        }
-    }
-
-    public StringSetting setSelectedValue(String datetime) {
-        if (getSetting() == null) {
-            StringSetting setting = new StringSetting(getKey(), getSection(), datetime);
-            setSetting(setting);
-            return setting;
-        } else {
-            StringSetting setting = (StringSetting) getSetting();
-            setting.setValue(datetime);
-            return null;
-        }
-    }
-
-    @Override
-    public int getType() {
-        return TYPE_DATETIME_SETTING;
-    }
-}

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

@@ -0,0 +1,35 @@
+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.StringSetting
+
+class DateTimeSetting(
+    key: String,
+    section: String,
+    titleId: Int,
+    descriptionId: Int,
+    private val defaultValue: String,
+    setting: Setting
+) : SettingsItem(key, section, setting, titleId, descriptionId) {
+    override val type = TYPE_DATETIME_SETTING
+
+    val value: String
+        get() = if (setting != null) {
+            val setting = setting as StringSetting
+            setting.value
+        } else {
+            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
+        }
+    }
+}