import { ReactWidget } from '@jupyterlab/apputils' ; import React , { useEffect , useState , ReactElement } from 'react' ; import { IndicatorComponent } from './indicator' ; import { ResourceUsage } from './model' ; /**
 * A CpuView component to display CPU usage.
 */ const CpuViewComponent = ( { model , label , } ) : ReactElement => { const [ text , setText ] = useState ( '' ) ; const [ values , setValues ] = useState ( [ ] ) ; const update = ( ) : void => { const { cpuLimit , currentCpuPercent } = model ; const newValues = model . values . map ( ( value ) => Math . min ( 1 , value . cpuPercent / cpuLimit ) ) ; const newText = `${ ( currentCpuPercent * 100 ) . toFixed ( 0 ) }%` ; setText ( newText ) ; setValues ( newValues ) ; } ; useEffect ( ( ) => { model . changed . connect ( update ) ; return ( ) : void => { model . changed . disconnect ( update ) ; } ; } , [ model ] ) ; return ( < IndicatorComponent enabled = { model . cpuAvailable } values = { values } label = { label } color = { '#0072B3' } text = { text } / > ) ; } ; /**
 * A namespace for CpuView statics.
 */ export namespace CpuView { param model param label export const createCpuView = ( model , label ) : ReactWidget => { return ReactWidget . create ( < CpuViewComponent model = { model } label = { label } / > ) ; } ; }