StaticChartDataSource class

An in-memory, zero-boilerplate implementation of ChartDataSource.

Enables developers to feed an existing List<Candle> or JSON map data directly into Im Charts without writing custom data provider code.

Implemented types

• ChartDataSource

Constructors

StaticChartDataSource(List<Candle> candles)

Creates a static data source populated with the given candles.

StaticChartDataSource.fromMapList(List<Map<String, dynamic>> rawList)

Convenient constructor to parse raw OHLCV maps (e.g. from a REST API) directly.

factory

Properties

candles → List<Candle>

Returns an unmodifiable view of current candles.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

appendCandle(Candle candle) → void

Appends a new closed or live candle to the dataset.

dispose() → void

Disposes any active connections or timers.

override

getHistoricalData({required String symbol, required Timeframe timeframe, int count = 500, DateTime? before}) → Future<List<Candle>>

Fetches historical OHLCV bars for the specified symbol and timeframe. Optionally pass before to fetch candles older than that timestamp (for pagination).

override

getLiveTicks(String symbol) → Stream<Tick>

Real-time stream of live trades/ticks for the given symbol.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

pushPrice(double price, {double volume = 1.0}) → void

Emits a live price tick with current timestamp.

pushTick(Tick tick) → void

Emits a new real-time Tick through the live stream.

toString() → String

A string representation of this object.

inherited

updateCandles(List<Candle> newCandles) → void

Replaces all candles with newCandles.

Operators

operator ==(Object other) → bool

The equality operator.

inherited