PersistedNullableStringSignal class - signals_flutter library

Constructors

PersistedNullableStringSignal(String? val, String key, {SignalsKeyValueStore? store}): Creates a new NullableStringSignal.

Properties

autoDispose ↔ bool: Throws and error if read after dispose and can be disposed on last unsubscribe.
getter/setter pairinherited
codeUnits → List<int>: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
An unmodifiable list of the UTF-16 code units of this string.
no setter
debugLabel → String?: Debug label for Debug Mode
finalinherited
disposed ↔ bool: Check if the effect is disposed
getter/setter pairinherited
equalityCheck ↔ bool Function(String? a, String? b): Optional method to check if to values are the same
getter/setter pairinherited
globalId → int: Global ID of the signal
finalinherited
hashCode → int: The hash code for this object.
no setterinherited
internalValue → String?: no setterinherited
isEmpty → bool: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Whether this string is empty.
no setter
isInitialized → bool: Check if a signal value is set (does not subscribe)
no setterinherited
isNotEmpty → bool: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Whether this string is not empty.
no setter
key → String: The key to use for storing the value.
finalinherited
length → int: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
The length of the string.
no setter
loaded ↔ bool: Whether the signal has been loaded from the store.
getter/setter pairinherited
runes → Runes: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
An Iterable of Unicode code-points of this string.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
store → SignalsKeyValueStore: The store to use for storing the value.
finalinherited
value ↔ String?: Compute the current value
getter/setter pairinherited
version ↔ int: Version numbers should always be >= 0, because the special value -1 is used by Nodes to signify potentially unused but recyclable nodes.
getter/setter pairinherited

Methods

afterCreate(String? val) → void: Internal hook for after a signal is created
inherited
beforeUpdate(String? val) → void: Internal hook for after a signal is updated
inherited
call() → String?: Return the value when invoked
inherited
codeUnitAt(int index) → int: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Returns the 16-bit UTF-16 code unit at the given index.
contains(Pattern other, [int startIndex = 0]) → bool: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Whether this string contains a match of other.
decode(String value) → String?: Decodes the value from a string.
override
dispose() → void: Dispose the signal
inherited
encode(String? value) → String: Encodes the value to a string.
override
endsWith(String other) → bool: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Whether this string ends with other.
get() → String?: Helper method to get the current value
inherited
indexOf(Pattern pattern, [int start = 0]) → int: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Returns the position of the first match of pattern in this string, starting at start, inclusive:
init() → Future<void>: Initializes the signal by loading the value from the store.
inherited
internalRefresh() → bool: inherited
lastIndexOf(Pattern pattern, [int? start]) → int: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
The starting position of the last match pattern in this string.
load() → Future<String?>: Loads the value from the store.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
onDispose(void cleanup()) → void Function(): Add a cleanup function to be called when the signal is disposed
inherited
overrideWith(String? val) → Signal<String?>: Override the current signal with a new value as if it was created with it
inherited
padLeft(int width, [String padding = ' ']) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Pads this string on the left if it is shorter than width.
padRight(int width, [String padding = ' ']) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Pads this string on the right if it is shorter than width.
peek() → String?: In the rare instance that you have an effect that should write to another signal based on the previous value, but you don't want the effect to be subscribed to that signal, you can read a signals's previous value via signal.peek().
inherited
readonly() → ReadonlySignal<String?>: Returns a readonly signal
inherited
replaceAll(Pattern from, String replace) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Replaces all substrings that match from with replace.
replaceAllMapped(Pattern from, String replace(Match match)) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Replace all substrings that match from by a computed string.
replaceFirst(Pattern from, String to, [int startIndex = 0]) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Creates a new string with the first occurrence of from replaced by to.
replaceFirstMapped(Pattern from, String replace(Match match), [int startIndex = 0]) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Replace the first occurrence of from in this string.
replaceRange(int start, int? end, String replacement) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Replaces the substring from start to end with replacement.
save(String? value) → Future<void>: Saves the value to the store.
inherited
set(String? val, {bool force = false}) → bool: Set the current value by a method
inherited
split(Pattern pattern) → List<String>: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Splits the string at matches of pattern and returns a list of substrings.
splitMapJoin(Pattern pattern, {String onMatch(Match)?, String onNonMatch(String)?}) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Splits the string, converts its parts, and combines them into a new string.
startsWith(Pattern pattern, [int index = 0]) → bool: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Whether this string starts with a match of pattern.
subscribe(void fn(String? value)) → void Function(): Subscribe to value changes with a dispose function
inherited
subscribeToNode(Node node) → void: inherited
substring(int start, [int? end]) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
The substring of this string from start, inclusive, to end, exclusive.
toJson() → dynamic: Convert value to JSON
inherited
toLowerCase() → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Converts all characters in this string to lower case.
toString() → String: A string representation of this object.
inherited
toUpperCase() → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Converts all characters in this string to upper case.
trim() → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
The string without any leading and trailing whitespace.
trimLeft() → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
The string without any leading whitespace.
trimRight() → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
The string without any trailing whitespace.
unsubscribeFromNode(Node node) → void: inherited

Operators

operator *(int times) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Creates a new string by concatenating this string with itself a number of times.
operator +(String other) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
Creates a new string by concatenating this string with other.
operator ==(Object other) → bool: The equality operator.
inherited
operator [](int index) → String: Available on ReadonlySignal<String>, provided by the StringSignalExtension extension
The character (as a single-code-unit String) at the given index.