diff options
Diffstat (limited to 'core/src/main/kotlin/ca/allanwang/kau/kpref/KPrefDelegate.kt')
| -rw-r--r-- | core/src/main/kotlin/ca/allanwang/kau/kpref/KPrefDelegate.kt | 69 |
1 files changed, 34 insertions, 35 deletions
diff --git a/core/src/main/kotlin/ca/allanwang/kau/kpref/KPrefDelegate.kt b/core/src/main/kotlin/ca/allanwang/kau/kpref/KPrefDelegate.kt index 60d03ad..b80479e 100644 --- a/core/src/main/kotlin/ca/allanwang/kau/kpref/KPrefDelegate.kt +++ b/core/src/main/kotlin/ca/allanwang/kau/kpref/KPrefDelegate.kt @@ -3,15 +3,29 @@ package ca.allanwang.kau.kpref import ca.allanwang.kau.kotlin.ILazyResettable -fun KPref.kpref(key: String, fallback: Boolean, postSetter: (value: Boolean) -> Unit = {}) = KPrefDelegate(key, fallback, this, postSetter) -fun KPref.kpref(key: String, fallback: Double, postSetter: (value: Float) -> Unit = {}) = KPrefDelegate(key, fallback.toFloat(), this, postSetter) -fun KPref.kpref(key: String, fallback: Float, postSetter: (value: Float) -> Unit = {}) = KPrefDelegate(key, fallback, this, postSetter) -fun KPref.kpref(key: String, fallback: Int, postSetter: (value: Int) -> Unit = {}) = KPrefDelegate(key, fallback, this, postSetter) -fun KPref.kpref(key: String, fallback: Long, postSetter: (value: Long) -> Unit = {}) = KPrefDelegate(key, fallback, this, postSetter) -fun KPref.kpref(key: String, fallback: Set<String>, postSetter: (value: Set<String>) -> Unit = {}) = KPrefDelegate(key, StringSet(fallback), this, postSetter) -fun KPref.kpref(key: String, fallback: String, postSetter: (value: String) -> Unit = {}) = KPrefDelegate(key, fallback, this, postSetter) +fun KPref.kpref(key: String, fallback: Boolean, postSetter: (value: Boolean) -> Unit = {}) = + KPrefDelegate(key, fallback, this, KPrefBooleanTransaction, postSetter) -class StringSet(set: Collection<String>) : LinkedHashSet<String>(set) +fun KPref.kpref(key: String, fallback: Float, postSetter: (value: Float) -> Unit = {}) = + KPrefDelegate(key, fallback, this, KPrefFloatTransaction, postSetter) + +@Deprecated("Double is not supported in SharedPreferences; cast to float yourself", + ReplaceWith("kpref(key, fallback.toFloat(), postSetter)"), + DeprecationLevel.WARNING) +fun KPref.kpref(key: String, fallback: Double, postSetter: (value: Float) -> Unit = {}) = + kpref(key, fallback.toFloat(), postSetter) + +fun KPref.kpref(key: String, fallback: Int, postSetter: (value: Int) -> Unit = {}) = + KPrefDelegate(key, fallback, this, KPrefIntTransaction, postSetter) + +fun KPref.kpref(key: String, fallback: Long, postSetter: (value: Long) -> Unit = {}) = + KPrefDelegate(key, fallback, this, KPrefLongTransaction, postSetter) + +fun KPref.kpref(key: String, fallback: Set<String>, postSetter: (value: Set<String>) -> Unit = {}) = + KPrefDelegate(key, fallback, this, KPrefSetTransaction, postSetter) + +fun KPref.kpref(key: String, fallback: String, postSetter: (value: String) -> Unit = {}) = + KPrefDelegate(key, fallback, this, KPrefStringTransaction, postSetter) /** * Created by Allan Wang on 2017-06-07. @@ -20,20 +34,24 @@ class StringSet(set: Collection<String>) : LinkedHashSet<String>(set) * Contains a unique key for the shared preference as well as a nonnull fallback item * Also contains an optional mutable postSetter that will be called every time a new value is given */ -class KPrefDelegate<T : Any> internal constructor( - private val key: String, private val fallback: T, private val pref: KPref, private var postSetter: (value: T) -> Unit = {}, lock: Any? = null +class KPrefDelegate<T> internal constructor( + private val key: String, + private val fallback: T, + private val pref: KPref, + private val transaction: KPrefTransaction<T>, + private var postSetter: (value: T) -> Unit = {} ) : ILazyResettable<T> { private object UNINITIALIZED @Volatile - private var _value: Any = UNINITIALIZED - private val lock = lock ?: this + private var _value: Any? = UNINITIALIZED + private val lock = this init { if (pref.prefMap.containsKey(key)) throw KPrefException("$key is already used elsewhere in preference ${pref.PREFERENCE_NAME}") - pref.prefMap.put(key, this@KPrefDelegate) + pref.prefMap[key] = this@KPrefDelegate } override fun invalidate() { @@ -53,15 +71,7 @@ class KPrefDelegate<T : Any> internal constructor( @Suppress("UNCHECKED_CAST") _v2 as T } else { - _value = when (fallback) { - is Boolean -> pref.sp.getBoolean(key, fallback) - is Float -> pref.sp.getFloat(key, fallback) - is Int -> pref.sp.getInt(key, fallback) - is Long -> pref.sp.getLong(key, fallback) - is StringSet -> StringSet(pref.sp.getStringSet(key, fallback)) - is String -> pref.sp.getString(key, fallback) - else -> throw KPrefException(fallback) - } + _value = transaction.get(pref.sp, key, fallback) @Suppress("UNCHECKED_CAST") _value as T } @@ -75,21 +85,10 @@ class KPrefDelegate<T : Any> internal constructor( operator fun setValue(any: Any, property: kotlin.reflect.KProperty<*>, t: T) { _value = t val editor = pref.sp.edit() - when (t) { - is Boolean -> editor.putBoolean(key, t) - is Float -> editor.putFloat(key, t) - is Int -> editor.putInt(key, t) - is Long -> editor.putLong(key, t) - is StringSet -> editor.putStringSet(key, t) - is String -> editor.putString(key, t) - else -> throw KPrefException(t) - } + transaction.set(editor, key, t) editor.apply() postSetter(t) } } -class KPrefException(message: String) : IllegalAccessException(message) { - constructor(element: Any?) : this("Invalid type in pref cache: ${element?.javaClass?.simpleName - ?: "null"}") -}
\ No newline at end of file +class KPrefException(message: String) : IllegalAccessException(message)
\ No newline at end of file |