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/*
* Copyright 2018 Allan Wang
*
* 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.
*/
package ca.allanwang.kau.kpref
import android.content.SharedPreferences
internal interface KPrefTransaction<T> {
fun get(prefs: SharedPreferences, key: String, fallback: T): T
fun set(editor: SharedPreferences.Editor, key: String, data: T)
}
internal object KPrefBooleanTransaction : KPrefTransaction<Boolean> {
override fun get(prefs: SharedPreferences, key: String, fallback: Boolean) =
prefs.getBoolean(key, fallback)
override fun set(editor: SharedPreferences.Editor, key: String, data: Boolean) {
editor.putBoolean(key, data)
}
}
internal object KPrefIntTransaction : KPrefTransaction<Int> {
override fun get(prefs: SharedPreferences, key: String, fallback: Int) =
prefs.getInt(key, fallback)
override fun set(editor: SharedPreferences.Editor, key: String, data: Int) {
editor.putInt(key, data)
}
}
internal object KPrefLongTransaction : KPrefTransaction<Long> {
override fun get(prefs: SharedPreferences, key: String, fallback: Long) =
prefs.getLong(key, fallback)
override fun set(editor: SharedPreferences.Editor, key: String, data: Long) {
editor.putLong(key, data)
}
}
internal object KPrefFloatTransaction : KPrefTransaction<Float> {
override fun get(prefs: SharedPreferences, key: String, fallback: Float) =
prefs.getFloat(key, fallback)
override fun set(editor: SharedPreferences.Editor, key: String, data: Float) {
editor.putFloat(key, data)
}
}
internal object KPrefStringTransaction : KPrefTransaction<String> {
override fun get(prefs: SharedPreferences, key: String, fallback: String) =
prefs.getString(key, fallback) ?: ""
override fun set(editor: SharedPreferences.Editor, key: String, data: String) {
editor.putString(key, data)
}
}
internal object KPrefSetTransaction : KPrefTransaction<Set<String>> {
override fun get(prefs: SharedPreferences, key: String, fallback: Set<String>) =
prefs.getStringSet(key, fallback)!!
override fun set(editor: SharedPreferences.Editor, key: String, data: Set<String>) {
editor.putStringSet(key, data)
}
}
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