xwidget_el library

Classes

Dependencies
DurationFormat
Defines labels for formatting durations.
ELGrammarDefinition
Grammar definition for the Expression Language (EL).
ELParser
ELParserDefinition
Expression<T>
Base class for all expressions in the expression language.
Model
Models
ModelValueNotifier
A ValueNotifier that holds a single value.
PathInfo
A simple dot/bracket notation path parser.
PathResolution
PropertyTransformer<T>
PropertyTranslation
TranslatedProperty
TypeConverters

Enums

DurationUnits
Units of time used for duration formatting.
ModelErrors

Extensions

ColorExt on Color
ListBrackets on List
ListExt on List<E>
MapBrackets on Map<String, dynamic>
A simple utility for retrieving data using dot/bracket notation. As long as your data follows a simple convention you can use a simplified dot/bracket notation to locate any piece of data in your hierarchy. Searches return null if no data is found or if the path string is invalid.
MapExt on Map<K, V>

Constants

defaultDurationFormat → const DurationFormat
Default duration format with English labels.
millisDays → const int
millisHours → const int
millisMins → const int
millisSecs → const int

Functions

abs(dynamic value) → num?
Returns the absolute value of value.
ceil(dynamic value) → int?
Returns the smallest integer greater than or equal to value.
contains(dynamic value, dynamic searchValue) → bool
Returns true if value contains searchValue.
containsKey(Map? map, dynamic searchKey) → bool
Returns true if map contains the given searchKey.
containsValue(Map? map, dynamic searchValue) → bool
Returns true if map contains the given searchValue.
deepEquals(dynamic obj1, dynamic obj2) → bool
Performs a deep equality comparison between obj1 and obj2.
deepHashCode(dynamic value) → int
Computes a deep hash code for value.
diffDateTime(DateTime left, DateTime right) → Duration
Returns the absolute difference between two DateTimes.
endsWith(String? value, String searchValue) → bool
Returns true if value ends with searchValue.
first(dynamic value) → dynamic
Returns the first element of value.
floor(dynamic value) → int?
Returns the largest integer less than or equal to value.
formatDateTime(String format, dynamic value) → String?
Formats a DateTime value using the given format pattern.
formatDuration(Duration? value, [String precision = "s", DurationFormat? format = defaultDurationFormat]) → String?
Formats a Duration into a human‑readable string.
isBlank(String? value) → bool
Returns true if value is null or consists only of whitespace.
isEmpty(dynamic value) → bool
Returns true if value is empty or null.
isFalse(dynamic value) → bool
Returns true if value evaluates to boolean false.
isFalseOrNull(dynamic value) → bool
Returns true if value is null or evaluates to boolean false.
isNotBlank(String? value) → bool
Returns true if value is not blank.
isNotEmpty(dynamic value) → bool
Returns true if value is not empty.
isNotNull(dynamic value) → bool
Returns true if value is not null.
isNull(dynamic value) → bool
Returns true if value is null.
isTrue(dynamic value) → bool
Returns true if value evaluates to boolean true.
isTrueOrNull(dynamic value) → bool
Returns true if value is null or evaluates to boolean true.
last(dynamic value) → dynamic
Returns the last element of value.
length(dynamic value) → int
Returns the length of value.
mapsEqual(Map a, Map b) → bool
Compares two maps a and b for shallow equality.
matches(String? value, String regExp) → bool
Returns true if value fully matches the given regExp.
nonNullType(Type type) → String
Returns the non‑nullable form of a Type.
now() → DateTime
Returns the current UTC DateTime.
nowUtc() → DateTime
Returns this DateTime value in the UTC time zone.
parseBool(String? value) → bool?
Parses a string into a bool.
parseColor(String? value) → Color?
Parses a hex string into a Color.
parseDateTime(String? value) → DateTime?
Parses a string into a DateTime.
parseDouble(String? value) → double?
Parses a string into a double.
parseDuration(String? value) → Duration?
Parses a string into a Duration.
parseEnum<T extends Enum>(List<T> values, String? value) → T?
Parses a string into an enum constant of type T.
parseInt(String? value, {int? radix}) → int?
Parses a string into an int.
parseListOfDoubles(String? value) → List<double>?
Parses a comma‑separated string into a list of doubles.
parseListOfInts(String? value) → List<int>?
Parses a comma‑separated string into a list of ints.
parseListOfStrings(String? value) → List<String>?
Parses a comma‑separated string into a list of strings.
randomDouble() → double
Generates a non-negative random floating point value uniformly distributed in the range from 0.0, inclusive, to 1.0, exclusive.
randomInt(int max) → int
Generates a non-negative random integer uniformly distributed in the range from 0, inclusive, to max, exclusive.
replaceAll(String? value, String regExp, String replacement) → String?
Replaces all substrings in value that match regExp with replacement.
replaceFirst(String? value, String regExp, String replacement, [int startIndex = 0]) → String?
Replaces the first substring in value that matches regExp with replacement.
round(dynamic value) → int?
Rounds value to the nearest integer.
startsWith(String? value, String searchFor) → bool
Returns true if value starts with searchFor.
substring(String? value, int start, [int end = -1]) → String?
Returns a substring of value from start to end.
toBool(dynamic value, [Set? trueValues, Set? falseValues]) → bool?
Converts a dynamic value to a bool.
toColor(dynamic value) → Color?
Converts a dynamic value to a Color.
toDateTime(dynamic value) → DateTime?
Converts a dynamic value to a DateTime.
toDays(dynamic value) → int?
Converts a dynamic value to an integer representing days.
toDouble(dynamic value) → double?
Converts a dynamic value to an integer representing days.
toDuration(dynamic value, [String? intUnit]) → Duration?
Converts a dynamic value to a Duration.
toEnum<T extends Enum>(dynamic value, List<T> values) → T?
Converts a dynamic value to an enum constant of type T.
toHours(dynamic value) → int?
Converts a dynamic value to an integer representing hours.
toInt(dynamic value) → int?
Converts a dynamic value to an int.
toMillis(dynamic value) → int?
Converts a dynamic value to an integer representing milliseconds.
toMinutes(dynamic value) → int?
Converts a dynamic value to an integer representing minutes.
toSeconds(dynamic value) → int?
Converts a dynamic value to an integer representing seconds.
toString(dynamic value) → String?
Converts a dynamic value to a String.
tryParseBool(String? value) → bool?
Attempts to parse value into a bool. Returns null instead of throwing if parsing fails.
tryParseDateTime(String? value) → DateTime?
Attempts to parse value into a DateTime. Returns null instead of throwing if parsing fails.
tryParseDouble(String? value) → double?
Attempts to parse value into a double. Returns null instead of throwing if parsing fails.
tryParseDuration(String? value) → Duration?
Attempts to parse value into a Duration. Returns null instead of throwing if parsing fails.
tryParseEnum<T extends Enum>(List<T> values, String? value) → T?
Attempts to parse value into an enum constant of type T. Returns null instead of throwing if parsing fails.
tryParseInt(String? value) → int?
Attempts to parse value into an int. Returns null instead of throwing if parsing fails.
tryToBool(dynamic value) → bool?
Attempts to convert value to a bool. Returns null instead of throwing if conversion fails.
tryToColor(dynamic value) → Color?
Attempts to convert value to a Color. Returns null instead of throwing if conversion fails.
tryToDateTime(dynamic value) → DateTime?
Attempts to convert value to a DateTime. Returns null instead of throwing if conversion fails.
tryToDays(dynamic value) → int?
Attempts to convert value to days. Returns null instead of throwing if conversion fails.
tryToDouble(dynamic value) → double?
Attempts to convert value to a double. Returns null instead of throwing if conversion fails.
tryToDuration(dynamic value, [String? unit]) → Duration?
Attempts to convert value to a Duration. Returns null instead of throwing if conversion fails.
tryToEnum<T extends Enum>(List<T> values, dynamic value) → T?
Attempts to convert value to an enum constant of type T. Returns null instead of throwing if conversion fails.
tryToHours(dynamic value) → int?
Attempts to convert value to hours. Returns null instead of throwing if conversion fails.
tryToInt(dynamic value) → int?
Attempts to convert value to an int. Returns null instead of throwing if conversion fails.
tryToMillis(dynamic value) → int?
Attempts to convert value to milliseconds. Returns null instead of throwing if conversion fails.
tryToMinutes(dynamic value) → int?
Attempts to convert value to minutes. Returns null instead of throwing if conversion fails.
tryToSeconds(dynamic value) → int?
Attempts to convert value to seconds. Returns null instead of throwing if conversion fails.
typeOf<T>() → Type
Returns the Type of generic parameter T.

Typedefs

ModelFactory<T extends Model> = T Function(Map<String, dynamic> data, {bool? immutable, PropertyTranslation? translation})
TypeConverter<T> = T? Function(dynamic value)