newSimpleChartWidget

newSimpleChartWidget is a constructor function for creating the Simple Chart widget.

Widget Constructor

Call newSimpleChartWidget to create a widget instance inside a browser DOM element.

import { newSimpleChartWidget } from '@dx-display/widgets-simple-chart'

const domNode = document.getElementById('widget-container')
const dataProviders = {
    ipfPath: '/your-path/ipf',
    ipfAuthHeader: 'your-header',
    feedPath: 'wss://your-path/feed',
    feedAuthHeader: 'your-header',
    schedulePath: '/api/schedule'
}
const widget = newSimpleChartWidget({
  element: domNode,
  providers: dataProviders,
})

Signature

newSimpleChartWidget(props: WidgetConstructorProps): WidgetAPI

Returns

An WidgetAPI object.

WidgetConstructorProps

Name	Type	Description
element	HTMLElement	A DOM element where the widget should be attached.
providers	Providers	An object with configuration for data providers. Refer to the Data Providers section for details
config optional	Config	Initial configuration of the widget
state optional	State	Initial state of the widget
theme optional	ThemeName | Theme	Initial theme of the widget. Refer to the Styling section for details

Widget API

getConfig

Gets the current widget config.

Signature

getConfig(): Config

Returns

Config

---

setConfig

Sets widget config.

Signature

setConfig(config: Config): void

Parameters

Name	Type	Description
config	Config	Configuration object. Omitted or undefined properties will be set to default

---

getState

Gets the current widget state.

Signature

getState(): State

Returns

State

---

updateState

Updates widget state.

Signature

updateState(state: Partial<State>): void

Parameters

Name	Type	Description
state	Partial<State>	State object. Merges with the previous state object.

---

addStateListener

Sets up a function that will be called whenever the state or specified field is changed.

Signature

addStateListener(stateChangeCallback: (state: State) => void): void
addStateListener(field: keyof State, fieldChangeCallback: (field: State[keyof State]) => void): void

Parameters

Name	Type	Description
stateChangeCallback	(state: State) => void	Function that will be called whenever the state is changed.

Or

Name	Type	Description
field	keyof State	The state field to listen for.
fieldChangeCallback	(value: State[keyof State]) => void	Function that will be called whenever the specified field is changed.

---

removeStateListener

Removes an state listener previously registered with addStateListener

Signature

removeStateListener(stateChangeCallback: (state: State) => void): void
removeStateListener(field: keyof State, fieldChangeCallback: (field: State[keyof State]) => void): void

Parameters

Name	Type	Description
stateChangeCallback	(state: State) => void	Listener that will be removed.

Or

Name	Type	Description
field	keyof State	The state field for which to remove a listener.
fieldChangeCallback	(value: State[keyof State]) => void	Listener that will be removed.

---

setSlot

Inserts custom markup into widget UI. Refer to the Extend widget UI section for details.

Signature

setSlot(slot: Slot, element: HTMLElement): void

Parameters

Name	Type	Description
slot	Slot	The place where a provided element is inserted.
element	HTMLElement	An element that is inserted.

---

setTheme

Sets widget theme.

Signature

setTheme(theme: Theme | ThemeName): void

---

unmount

Destroys the widget.

Signature

unmount(): void

Data Providers

The Data Providers object supplies an information about the endpoints required by the widget, such as the path to the endpoint and the authorization key.

interface SimpleChartWidgetDataProviders {
  ipfPath: string
  ipfAuthHeader: string
  feedPath: string
  feedAuthHeader: string
  schedulePath: string
}

Properties

Name	Type	Description
ipfPath	string	A string containing the path to the endpoint.
ipfAuthHeader	string	A string containing the authentication header for the endpoint.
feedPath	string	A string containing the path to the endpoint.
feedAuthHeader	string	A string containing the authentication header for the endpoint.
schedulePath	string	A string containing the path to the endpoint.

Configuration

Configuration is an object that defines the basic behavior of a widget and allows enabling or disabling widget features that cannot be configured within the widget's user interface.

Type

interface SimpleChartWidgetConfig {
  symbolSearchTypes?: SimpleChartWidgetSymbolSearchType[],
  symbolSearchViewMode?: SymbolSearchViewMode,
  aggregationPeriodSelectorViewMode?: ToolbarSelectorViewMode,
  rangeSelectorViewMode?: ToolbarSelectorViewMode,
  seriesTypeSelectorViewMode?: ToolbarSelectorViewMode,
  dataExportEnabled?: boolean,
  delayNotificationEnabled?: boolean,
  symbolScheduleStatusEnabled?: boolean,
  timezone?: string,
  onlyTradingHoursCandles?: boolean,
  lastPriceLineEnabled?: boolean,
  lastPriceLabelEnabled?: boolean,
  crosshairSnap?: boolean,
  crosshairSnapCandles?: SimpleChartWidgetCrosshairSnapCandles,
  locale?: LocaleSettings,
}

Properties

Name	Type	Default	Description
symbolSearchTypes Optional	SimpleChartWidgetSymbolSearchType[]	[ 'STOCK', 'FOREX', 'FUTURE', 'OPTION', 'ETF', 'PRODUCT' , 'INDEX' , 'CFD' ]	A list of instrument types uses for symbols search.
symbolSearchViewMode Optional	SymbolSearchViewMode	'available'	View mode of the symbol search in the toolbar.
aggregationPeriodSelectorViewMode Optional	ToolbarSelectorViewMode	'available'	View mode of the aggregation period select in the toolbar.
rangeSelectorViewMode Optional	ToolbarSelectorViewMode	'available'	View mode of the range select in the toolbar.
seriesTypeSelectorViewMode Optional	ToolbarSelectorViewMode	'available'	View mode of the series type select in the toolbar.
dataExportEnabled Optional	boolean	false	A flag that controls a visibility of an export button.
delayNotificationEnabled Optional	boolean	false	A flag that controls a visibility of an data delay notification.
symbolScheduleStatusEnabled Optional	boolean	false	A flag that controls a visibility of symbol schedule status in widget toolbar
timezone Optional	string	client environment timezone	String corresponds to IANA Time Zone name used to display dates in spicified time zone
onlyTradingHoursCandles Optional	boolean	false	A flag that controls if only trading hours candles are displayed
lastPriceLineEnabled Optional	boolean	false	A flag that controls visibility of last price line in chart. Ignored for volume series.
lastPriceLabelEnabled Optional	boolean	false	A flag that controls visibility of label for last price in chart. Ignored for volume series.
crosshairSnap Optional	boolean	false	A flag that controls whether the crosshair should snap to the point or follow the pointer independent of points.
crosshairSnapCandles Optional	SimpleChartWidgetCrosshairSnapCandles	'close'	Controls the snapping behavior of the crosshair specifically for candlestick charts. The value has no effect if crosshairSnap is set to false.
locale Optional	LocaleSettings	{ language: 'en', dateLocale: 'en-GB', numberLocale: 'en-GB' }	An object that defines the language and regional settings of the widget.

State

State is an object that represents the state of the widget.

Type

interface SimpleChartWidgetState {
  symbol?: string,
  aggregationPeriod: SimpleChartPeriod,
  range: SimpleChartRange,
  seriesType: SimpleChartSeriesType,
}

Properties

Name	Type	Default	Description
symbol Optional	string	undefined	A string containing the symbol by which the widget will display data.
aggregationPeriod	SimpleChartPeriod	'15m'	A string value defining aggregation period.
range	SimpleChartRange	'1D'	A string value defining chart range.
seriesType	SimpleChartSeriesType	'line'	Type of the chart.

Type Reference

Slot

Type

'header'

---

SimpleChartPeriod

Type

'1m' | '3m' | '5m' | '10m' | '15m' | '30m' | '45m' | '1H' | '2H' | '4H' | '1D' | '1W' | '1M'

---

SimpleChartRange

Type

'1D' | '1W' | '1M' | '6M' | 'YtD' | '1Y' | '5Y' | 'All'

---

SimpleChartSeriesType

Type

'candlestick' | 'line' | 'mountain' | 'volume' | 'baseLine'

---

SimpleChartWidgetSymbolSearchType

Type

'STOCK' | 'FOREX' | 'FUTURE' | 'OPTION' | 'ETF' | 'PRODUCT' | 'INDEX' | 'CFD'

---

SymbolSearchViewMode

Type

'available' | 'hidden' | 'value-only'

---

ToolbarSelectorViewMode

Type

'available' | 'hidden'

---

SimpleChartWidgetCrosshairSnapCandles

Type

'high' | 'low' | 'open' | 'close'

---

LocaleSettings

An object that defines the language and regional settings of the widget.

Type

{
  language: Language,
  dateLocale: string,
  numberLocale: string,
}

---

Language

Type

'en' | 'de' | 'ar'