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widget.tsx
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widget.tsx
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import { React, type AllWidgetProps, FormattedMessage, type DataSource, DataSourceComponent, type FeatureLayerQueryParams } from 'jimu-core'
import { JimuMapViewComponent, type JimuMapView, type FeatureLayerDataSource, type FeatureDataRecord } from 'jimu-arcgis'
import defaultMessages from './translations/default'
import Sketch from 'esri/widgets/Sketch'
import GraphicsLayer from 'esri/layers/GraphicsLayer'
import geometryEngine from 'esri/geometry/geometryEngine'
import Graphic from 'esri/Graphic'
import { type Geometry, type Polygon } from 'esri/geometry'
import { type SimpleFillSymbol } from 'esri/symbols'
import Slider from 'esri/widgets/Slider'
import type FeatureLayerView from 'esri/views/layers/FeatureLayerView'
const { useState, useRef, useEffect } = React
export default function (props: AllWidgetProps<unknown>) {
const apiSketchWidgetContainer = useRef<HTMLDivElement>()
const apiSliderWidgetContainer = useRef<HTMLDivElement>()
const distanceNum = useRef<Slider>()
const [featureLayerDataSource, setFeatureLayerDataSource] = useState<FeatureLayerDataSource>(undefined)
const [featureLayerView, setFeatureLayerView] = useState<FeatureLayerView>(undefined)
const [jimuMapView, setJimuMapView] = useState<JimuMapView>(undefined)
const [sketchWidget, setSketchWidget] = useState<Sketch>(undefined)
const queryParams = {
where: '1=1',
outFields: ['*'],
pageSize: 10
} as FeatureLayerQueryParams
let bufferDistance = 100
let featureFilter: __esri.FeatureFilter = null
useEffect(() => {
if (!featureLayerView && featureLayerDataSource) {
// featureLayerView has to be set first, because it's used in updateFilter(), which is called from updateBuffer(), which is called from initSketch()
const getFlView = async (layerId: string) => {
const fl = jimuMapView.view.map.findLayerById(layerId)
const flView = await jimuMapView.view.whenLayerView(fl) as FeatureLayerView
console.log('setFeatureLayerView')
setFeatureLayerView(flView) // this will trigger useEffect again, but this time with featureLayerView set
}
const layerId = featureLayerDataSource.layer?.id
getFlView(layerId)
} else if (jimuMapView && featureLayerDataSource) {
// we have a featureLayerView and the other dependencies, so we can initialize the UI
initSketch()
initSlider()
}
}, [jimuMapView, featureLayerDataSource, featureLayerView])
const sketchGraphicsLayer = new GraphicsLayer({ id: 'sketchGraphicsLayer' })
let filterGeometry: Geometry = null
const bufferGraphic = new Graphic({
geometry: null,
symbol: {
type: 'simple-fill',
color: [51, 51, 204, 0.4],
style: 'solid',
outline: {
color: 'white',
width: 1
}
} as unknown as SimpleFillSymbol
})
sketchGraphicsLayer.add(bufferGraphic)
const executeAttributiveQuery = async () => {
const fl = jimuMapView.view.map.findLayerById('18d0de1c6e2-layer-2')
const featureLayerView = await jimuMapView.view.whenLayerView(fl) as FeatureLayerView
const flvResults = await featureLayerView.queryFeatures({
geometry: bufferGraphic.geometry,
spatialRelationship: 'contains'
})
const dsResult = await featureLayerDataSource.query({
where: `objectid in (${flvResults.features.map((r: Graphic) => r.getObjectId()).join(',')})`
})
console.log('dsResult', dsResult)
const records = dsResult?.records as FeatureDataRecord[]
if (records.length > 0) {
featureLayerDataSource.selectRecordsByIds(records.map((r: any) => r.getId()), records)
} else {
featureLayerDataSource.clearSelection()
}
console.log('records selected', records)
}
const initSketch = () => {
const container = document.createElement('div')
apiSketchWidgetContainer.current.appendChild(container)
const sketch = new Sketch({
layer: sketchGraphicsLayer,
view: jimuMapView.view,
container: container,
// graphic will be selected as soon as it is created
creationMode: 'update',
availableCreateTools: ['point', 'polyline'],
visibleElements: {
undoRedoMenu: false,
selectionTools: {
'lasso-selection': false,
'rectangle-selection': false
},
settingsMenu: false,
snappingControls: false
}
})
sketch.on('create', (evt: __esri.SketchCreateEvent) => {
if (evt.state === 'complete') {
filterGeometry = evt.graphic.geometry as Geometry
updateBuffer(bufferDistance, 'meters')
executeAttributiveQuery()
}
})
setSketchWidget(sketch)
jimuMapView.view.map.add(sketchGraphicsLayer)
}
const initSlider = () => {
const container = document.createElement('div')
apiSliderWidgetContainer.current.appendChild(container)
requestAnimationFrame(() => {
apiSliderWidgetContainer.current.style.height = '70px'
})
distanceNum.current = new Slider({
container: apiSliderWidgetContainer.current,
min: 0,
max: 1000,
values: [bufferDistance],
steps: 1,
visibleElements: {
rangeLabels: true,
labels: true
}
})
// listen to change and input events on UI components
distanceNum.current.on('thumb-drag', async (evt: __esri.SliderThumbDragEvent) => {
bufferDistance = distanceNum.current.values[0]
updateBuffer(bufferDistance, 'meters')
if (evt.state === 'stop') {
executeAttributiveQuery()
}
})
}
// update the buffer graphic if user is filtering by distance
const updateBuffer = (distance: number, unit: __esri.LinearUnits): void => {
// TODO: clean up buffer when removing the Sketch graphic
if (distance > 0 && filterGeometry) {
bufferGraphic.geometry = geometryEngine.geodesicBuffer(filterGeometry, distance, unit) as Polygon
updateFilter()
} else {
bufferGraphic.geometry = null
updateFilter()
}
}
const updateFilter = () => {
featureFilter = {
geometry: filterGeometry,
spatialRelationship: 'intersects',
distance: bufferDistance,
units: 'meters'
} as unknown as __esri.FeatureFilter
// set effect on excluded features
// make them gray and transparent
if (featureLayerView) {
featureLayerView.featureEffect = {
filter: featureFilter,
excludedEffect: 'grayscale(100%) opacity(30%)'
} as unknown as __esri.FeatureEffect
}
}
const onActiveViewChange = (jmv: JimuMapView) => {
// TODO: try this out with multiple maps on the same page
// if we have a "previous" map where the widget was already added, we're hiding the old widget until it is shown again from via useEffect with the new settings.
// (ex: case where two Maps in single Experience page and user is switching between them in the Settings)
if (sketchWidget) {
requestAnimationFrame(() => {
apiSketchWidgetContainer.current.style.display = 'none'
})
}
if (distanceNum.current) {
requestAnimationFrame(() => {
apiSliderWidgetContainer.current.style.display = 'none'
})
}
setJimuMapView(jmv)
}
const onDataSourceCreated = (ds: DataSource) => {
setFeatureLayerDataSource(ds as FeatureLayerDataSource)
}
const dsConfigured = !!((props.useDataSources && props.useDataSources.length > 0))
const mapConfigured = !!((props.useMapWidgetIds && props.useMapWidgetIds.length > 0))
return <div className="widget-use-map-view" style={{ width: '100%', height: '100%', overflow: 'hidden' }}>
{!mapConfigured && <h3><FormattedMessage id="pleaseSelectMap" defaultMessage={defaultMessages.pleaseSelectAMap} /></h3>}
{!dsConfigured && <h3><FormattedMessage id="pleaseSelectDs" defaultMessage={defaultMessages.pleaseSelectDs} /></h3>}
<div ref={apiSketchWidgetContainer} />
<div ref={apiSliderWidgetContainer} />
<JimuMapViewComponent
useMapWidgetId={props.useMapWidgetIds?.[0]}
onActiveViewChange={onActiveViewChange}
/>
<DataSourceComponent useDataSource={props.useDataSources?.[0]} query={queryParams} widgetId={props.id} queryCount onDataSourceCreated={onDataSourceCreated} />
</div>
}