glok-model/uk.co.nickthecoder.glok.property.boilerplate/OptionalStringUnaryFunction

OptionalStringUnaryFunction

class OptionalStringUnaryFunction<A, OA : ObservableValue<A>>(argA: OA, lambda: (A) -> String?) : UnaryFunction<String?, A, OA> , ObservableOptionalString

Boilerplate which avoids having to use generics.

Similar to StringUnaryFunction, but the value can also be null.

Constructors

OptionalStringUnaryFunction

constructor(argA: OA, lambda: (A) -> String?)

Properties

val argA: OA

val lambda: (A) -> String?

open override val value: String?

Functions

addBindChangeListener

open override fun addBindChangeListener(listener: ChangeListener<String?, ObservableValue<String?>>)

Identical to addChangeListener, but these listeners are guaranteed to fire BEFORE other listeners. These should be used for the sole purpose of updating single ObservableValues which are dependent on this ObservableValue. This helps (but doesn't guarantee) that properties change atomically. i.e. when one property changes, a related property also changes before other (regular) listeners fire. Therefore, the (regular) listeners cannot read inconsistent values.

open fun addBindChangeListener(lambda: (ObservableValue<String?>, String?, String?) -> Unit): ChangeListener<String?, ObservableValue<String?>>

addBindListener

open fun addBindListener(lambda: (Observable) -> Unit): InvalidationListener

open override fun addBindListener(listener: InvalidationListener)

Identical to addListener, but these listeners are guaranteed to fire BEFORE regular listeners. These should be used for the sole purpose of updating other ObservableValues which are dependent on this Observable.

addChangeListener

open override fun addChangeListener(listener: ChangeListener<String?, ObservableValue<String?>>)

open fun addChangeListener(lambda: (ObservableValue<String?>, String?, String?) -> Unit): ChangeListener<String?, ObservableValue<String?>>

fun addDependent(d: ObservableValue<*>)

open fun addListener(lambda: (Observable) -> Unit): InvalidationListener

open override fun addListener(listener: InvalidationListener)

addWeakChangeListener

open fun addWeakChangeListener(lambda: (ObservableValue<String?>, String?, String?) -> Unit): ChangeListener<String?, ObservableValue<String?>>

addWeakListener

open fun addWeakListener(lambda: (Observable) -> Unit): InvalidationListener

fun <T : Any> ObservableValue<T>.asNullable(): ObservableValue<T?>

Converts an ObservableValue, with a non-nullable to value, to an ObservableValue whose value IS nullable.

open fun defaultOf(defaultValue: String): ObservableString

open fun equalTo(other: String?): ObservableBoolean

open fun equalTo(other: ObservableValue<String?>): ObservableBoolean

override fun eval(): String?

open operator fun getValue(thisRef: Any, kProperty: KProperty<*>): String?

Lets us declare a val using a for the value of this property, using this as a delegate. e.g.

open fun isNotNull(): ObservableBoolean

open fun isNull(): ObservableBoolean

fun ObservableOptionalString.isNullOrBlank(): ObservableBoolean

fun ObservableOptionalString.isNullOrEmpty(): ObservableBoolean

open fun notEqualTo(other: String?): ObservableBoolean

open fun notEqualTo(other: ObservableValue<String?>): ObservableBoolean

notSameInstance

open fun notSameInstance(other: String?): ObservableBoolean

open fun notSameInstance(other: ObservableValue<String?>): ObservableBoolean

removeChangeListener

open override fun removeChangeListener(listener: ChangeListener<String?, ObservableValue<String?>>)

removeDependent

fun removeDependent(d: ObservableValue<*>)

open override fun removeListener(listener: InvalidationListener)

replaceNullWith

fun <T : Any> ObservableValue<T?>.replaceNullWith(defaultValue: T): ObservableValue<T>

Converts an ObservableValue, with a nullable to value, to an ObservableValue whose value is NOT nullable, by supplying a defaultValue.

open fun sameInstance(other: String?): ObservableBoolean

open fun sameInstance(other: ObservableValue<String?>): ObservableBoolean

toObservableString

open fun toObservableString(): ObservableString

open fun toObservableString(nullString: String): ObservableString