397 lines
15 KiB
TypeScript
397 lines
15 KiB
TypeScript
import { Store, UIEventSource } from "../../Logic/UIEventSource"
|
|
import LayerConfig from "../../Models/ThemeConfig/LayerConfig"
|
|
import { ShowDataLayerOptions } from "./ShowDataLayerOptions"
|
|
import { ElementStorage } from "../../Logic/ElementStorage"
|
|
import RenderingMultiPlexerFeatureSource from "../../Logic/FeatureSource/Sources/RenderingMultiPlexerFeatureSource"
|
|
import ScrollableFullScreen from "../Base/ScrollableFullScreen"
|
|
import { LeafletMouseEvent, PathOptions } from "leaflet"
|
|
import Hash from "../../Logic/Web/Hash"
|
|
import { BBox } from "../../Logic/BBox"
|
|
import { Utils } from "../../Utils"
|
|
/*
|
|
// import 'leaflet-polylineoffset';
|
|
We don't actually import it here. It is imported in the 'MinimapImplementation'-class, which'll result in a patched 'L' object.
|
|
Even though actually importing this here would seem cleaner, we don't do this as this breaks some scripts:
|
|
- Scripts are ran in ts-node
|
|
- ts-node doesn't define the 'window'-object
|
|
- Importing this will execute some code which needs the window object
|
|
|
|
*/
|
|
|
|
/**
|
|
* The data layer shows all the given geojson elements with the appropriate icon etc
|
|
*/
|
|
export default class ShowDataLayerImplementation {
|
|
private static dataLayerIds = 0
|
|
private readonly _leafletMap: Store<L.Map>
|
|
private readonly _enablePopups: boolean
|
|
private readonly _features: RenderingMultiPlexerFeatureSource
|
|
private readonly _layerToShow: LayerConfig
|
|
private readonly _selectedElement: UIEventSource<any>
|
|
private readonly allElements: ElementStorage
|
|
// Used to generate a fresh ID when needed
|
|
private _cleanCount = 0
|
|
private geoLayer = undefined
|
|
|
|
/**
|
|
* A collection of functions to call when the current geolayer is unregistered
|
|
*/
|
|
private unregister: (() => void)[] = []
|
|
private isDirty = false
|
|
/**
|
|
* If the selected element triggers, this is used to lookup the correct layer and to open the popup
|
|
* Used to avoid a lot of callbacks on the selected element
|
|
*
|
|
* Note: the key of this dictionary is 'feature.properties.id+features.geometry.type' as one feature might have multiple presentations
|
|
* @private
|
|
*/
|
|
private readonly leafletLayersPerId = new Map<
|
|
string,
|
|
{ feature: any; activateFunc: (event: LeafletMouseEvent) => void }
|
|
>()
|
|
|
|
private readonly showDataLayerid: number
|
|
private readonly createPopup: (
|
|
tags: UIEventSource<any>,
|
|
layer: LayerConfig
|
|
) => ScrollableFullScreen
|
|
|
|
/**
|
|
* Creates a datalayer.
|
|
*
|
|
* If 'createPopup' is set, this function is called every time that 'popupOpen' is called
|
|
* @param options
|
|
*/
|
|
constructor(options: ShowDataLayerOptions & { layerToShow: LayerConfig }) {
|
|
this._leafletMap = options.leafletMap
|
|
this.showDataLayerid = ShowDataLayerImplementation.dataLayerIds
|
|
ShowDataLayerImplementation.dataLayerIds++
|
|
if (options.features === undefined) {
|
|
console.error("Invalid ShowDataLayer invocation: options.features is undefed")
|
|
throw "Invalid ShowDataLayer invocation: options.features is undefed"
|
|
}
|
|
this._features = new RenderingMultiPlexerFeatureSource(
|
|
options.features,
|
|
options.layerToShow
|
|
)
|
|
this._layerToShow = options.layerToShow
|
|
this._selectedElement = options.selectedElement
|
|
this.allElements = options.state?.allElements
|
|
this.createPopup = undefined
|
|
this._enablePopups = options.popup !== undefined
|
|
if (options.popup !== undefined) {
|
|
this.createPopup = options.popup
|
|
}
|
|
const self = this
|
|
|
|
options.leafletMap.addCallback(() => {
|
|
return self.update(options)
|
|
})
|
|
|
|
this._features.features.addCallback((_) => self.update(options))
|
|
options.doShowLayer?.addCallback((doShow) => {
|
|
const mp = options.leafletMap.data
|
|
if (mp === null) {
|
|
self.Destroy()
|
|
return true
|
|
}
|
|
if (mp == undefined) {
|
|
return
|
|
}
|
|
|
|
if (doShow) {
|
|
if (self.isDirty) {
|
|
return self.update(options)
|
|
} else {
|
|
mp.addLayer(this.geoLayer)
|
|
}
|
|
} else {
|
|
if (this.geoLayer !== undefined) {
|
|
mp.removeLayer(this.geoLayer)
|
|
this.unregister.forEach((f) => f())
|
|
this.unregister = []
|
|
}
|
|
}
|
|
})
|
|
|
|
this._selectedElement?.addCallbackAndRunD((selected) => {
|
|
if (selected === undefined) {
|
|
ScrollableFullScreen.collapse()
|
|
return
|
|
}
|
|
self.openPopupOfSelectedElement(selected)
|
|
})
|
|
|
|
this.update(options)
|
|
}
|
|
|
|
private Destroy() {
|
|
this.unregister.forEach((f) => f())
|
|
}
|
|
|
|
private openPopupOfSelectedElement(selected) {
|
|
if (selected === undefined) {
|
|
return
|
|
}
|
|
if (this._leafletMap.data === undefined) {
|
|
return
|
|
}
|
|
const v = this.leafletLayersPerId.get(selected.properties.id + selected.geometry.type)
|
|
if (v === undefined) {
|
|
return
|
|
}
|
|
const feature = v.feature
|
|
if (selected.properties.id !== feature.properties.id) {
|
|
return
|
|
}
|
|
|
|
if (feature.id !== feature.properties.id) {
|
|
// Probably a feature which has renamed
|
|
// the feature might have as id 'node/-1' and as 'feature.properties.id' = 'the newly assigned id'. That is no good too
|
|
console.log("Not opening the popup for", feature, "as probably renamed")
|
|
return
|
|
}
|
|
v.activateFunc(null)
|
|
}
|
|
|
|
private update(options: ShowDataLayerOptions): boolean {
|
|
if (this._features.features.data === undefined) {
|
|
return
|
|
}
|
|
this.isDirty = true
|
|
if (options?.doShowLayer?.data === false) {
|
|
return
|
|
}
|
|
const mp = options.leafletMap.data
|
|
|
|
if (mp === null) {
|
|
return true // Unregister as the map has been destroyed
|
|
}
|
|
if (mp === undefined) {
|
|
return
|
|
}
|
|
|
|
this._cleanCount++
|
|
// clean all the old stuff away, if any
|
|
if (this.geoLayer !== undefined) {
|
|
mp.removeLayer(this.geoLayer)
|
|
}
|
|
|
|
const self = this
|
|
|
|
this.geoLayer = new L.LayerGroup()
|
|
|
|
const selfLayer = this.geoLayer
|
|
const allFeats = this._features.features.data
|
|
for (const feat of allFeats) {
|
|
if (feat === undefined) {
|
|
continue
|
|
}
|
|
|
|
// Why not one geojson layer with _all_ features, and attaching a right-click onto every feature individually?
|
|
// Because that somehow doesn't work :(
|
|
const feature = feat
|
|
const geojsonLayer = L.geoJSON(feature, {
|
|
style: (feature) => <PathOptions>self.createStyleFor(feature),
|
|
pointToLayer: (feature, latLng) => self.pointToLayer(feature, latLng),
|
|
onEachFeature: (feature, leafletLayer) =>
|
|
self.postProcessFeature(feature, leafletLayer),
|
|
})
|
|
if (feature.geometry.type === "Point") {
|
|
geojsonLayer.on({
|
|
contextmenu: (e) => {
|
|
const o = self.leafletLayersPerId.get(feature?.properties?.id)
|
|
o?.activateFunc(<LeafletMouseEvent>e)
|
|
Utils.preventDefaultOnMouseEvent(e.originalEvent)
|
|
},
|
|
dblclick: (e) => {
|
|
const o = self.leafletLayersPerId.get(feature?.properties?.id)
|
|
o?.activateFunc(<LeafletMouseEvent>e)
|
|
Utils.preventDefaultOnMouseEvent(e.originalEvent)
|
|
},
|
|
})
|
|
}
|
|
this.geoLayer.addLayer(geojsonLayer)
|
|
try {
|
|
if (feat.geometry.type === "LineString") {
|
|
const coords = L.GeoJSON.coordsToLatLngs(feat.geometry.coordinates)
|
|
const tagsSource =
|
|
this.allElements?.addOrGetElement(feat) ??
|
|
new UIEventSource<any>(feat.properties)
|
|
let offsettedLine
|
|
tagsSource
|
|
.map((tags) =>
|
|
this._layerToShow.lineRendering[
|
|
feat.lineRenderingIndex
|
|
].GenerateLeafletStyle(tags)
|
|
)
|
|
.withEqualityStabilized((a, b) => {
|
|
if (a === b) {
|
|
return true
|
|
}
|
|
if (a === undefined || b === undefined) {
|
|
return false
|
|
}
|
|
return (
|
|
a.offset === b.offset &&
|
|
a.color === b.color &&
|
|
a.weight === b.weight &&
|
|
a.dashArray === b.dashArray
|
|
)
|
|
})
|
|
.addCallbackAndRunD((lineStyle) => {
|
|
if (offsettedLine !== undefined) {
|
|
self.geoLayer.removeLayer(offsettedLine)
|
|
}
|
|
// @ts-ignore
|
|
offsettedLine = L.polyline(coords, lineStyle)
|
|
this.postProcessFeature(feat, offsettedLine)
|
|
offsettedLine.addTo(this.geoLayer)
|
|
|
|
// If 'self.geoLayer' is not the same as the layer the feature is added to, we can safely remove this callback
|
|
return self.geoLayer !== selfLayer
|
|
})
|
|
} else {
|
|
geojsonLayer.addData(feat)
|
|
}
|
|
} catch (e) {
|
|
console.error(
|
|
"Could not add ",
|
|
feat,
|
|
"to the geojson layer in leaflet due to",
|
|
e,
|
|
e.stack
|
|
)
|
|
}
|
|
}
|
|
|
|
if ((options.zoomToFeatures ?? false) && allFeats.length > 0) {
|
|
let bound = undefined
|
|
for (const feat of allFeats) {
|
|
const fbound = BBox.get(feat)
|
|
bound = bound?.unionWith(fbound) ?? fbound
|
|
}
|
|
if (bound !== undefined) {
|
|
mp.fitBounds(bound?.toLeaflet(), { animate: false })
|
|
}
|
|
}
|
|
|
|
if (options.doShowLayer?.data ?? true) {
|
|
mp.addLayer(this.geoLayer)
|
|
}
|
|
this.isDirty = false
|
|
this.openPopupOfSelectedElement(this._selectedElement?.data)
|
|
}
|
|
|
|
private createStyleFor(feature) {
|
|
const tagsSource =
|
|
this.allElements?.addOrGetElement(feature) ?? new UIEventSource<any>(feature.properties)
|
|
// Every object is tied to exactly one layer
|
|
const layer = this._layerToShow
|
|
|
|
const pointRenderingIndex = feature.pointRenderingIndex
|
|
const lineRenderingIndex = feature.lineRenderingIndex
|
|
|
|
if (pointRenderingIndex !== undefined) {
|
|
const style = layer.mapRendering[pointRenderingIndex].GenerateLeafletStyle(
|
|
tagsSource,
|
|
this._enablePopups
|
|
)
|
|
return {
|
|
icon: style,
|
|
}
|
|
}
|
|
if (lineRenderingIndex !== undefined) {
|
|
return layer.lineRendering[lineRenderingIndex].GenerateLeafletStyle(tagsSource.data)
|
|
}
|
|
|
|
throw "Neither lineRendering nor mapRendering defined for " + feature
|
|
}
|
|
|
|
private pointToLayer(feature, latLng): L.Layer {
|
|
// Leaflet cannot handle geojson points natively
|
|
// We have to convert them to the appropriate icon
|
|
// Click handling is done in the next step
|
|
const layer: LayerConfig = this._layerToShow
|
|
if (layer === undefined) {
|
|
return
|
|
}
|
|
let tagSource =
|
|
this.allElements?.getEventSourceById(feature.properties.id) ??
|
|
new UIEventSource<any>(feature.properties)
|
|
const clickable =
|
|
!(layer.title === undefined && (layer.tagRenderings ?? []).length === 0) &&
|
|
this._enablePopups
|
|
let style: any = layer.mapRendering[feature.pointRenderingIndex].GenerateLeafletStyle(
|
|
tagSource,
|
|
clickable
|
|
)
|
|
const baseElement = style.html
|
|
if (!this._enablePopups) {
|
|
baseElement.SetStyle("cursor: initial !important")
|
|
}
|
|
style.html = style.html.ConstructElement()
|
|
return L.marker(latLng, {
|
|
icon: L.divIcon(style),
|
|
})
|
|
}
|
|
private createActivateFunction(feature, key: string, layer: LayerConfig): (event) => void {
|
|
let infobox: ScrollableFullScreen = undefined
|
|
const self = this
|
|
|
|
function activate(event: LeafletMouseEvent) {
|
|
if (infobox === undefined) {
|
|
const tags =
|
|
self.allElements?.getEventSourceById(key) ??
|
|
new UIEventSource<any>(feature.properties)
|
|
infobox = self.createPopup(tags, layer)
|
|
|
|
self.unregister.push(() => {
|
|
console.log("Destroying infobox")
|
|
infobox.Destroy()
|
|
})
|
|
}
|
|
infobox.Activate()
|
|
self._selectedElement.setData(
|
|
self.allElements.ContainingFeatures.get(feature.id) ?? feature
|
|
)
|
|
}
|
|
return activate
|
|
}
|
|
/**
|
|
* Post processing - basically adding the popup
|
|
* @param feature
|
|
* @param leafletLayer
|
|
* @private
|
|
*/
|
|
private postProcessFeature(feature, leafletLayer: L.Evented) {
|
|
const layer: LayerConfig = this._layerToShow
|
|
if (layer.title === undefined || !this._enablePopups) {
|
|
// No popup action defined -> Don't do anything
|
|
// or probably a map in the popup - no popups needed!
|
|
return
|
|
}
|
|
const key = feature.properties.id
|
|
let activate: (event) => void
|
|
if (this.leafletLayersPerId.has(key)) {
|
|
activate = this.leafletLayersPerId.get(key).activateFunc
|
|
} else {
|
|
activate = this.createActivateFunction(feature, key, layer)
|
|
}
|
|
|
|
// We also have to open on rightclick, doubleclick, ... as users sometimes do this. See #1219
|
|
leafletLayer.on({
|
|
dblclick: activate,
|
|
contextmenu: activate,
|
|
click: activate,
|
|
})
|
|
// Add the feature to the index to open the popup when needed
|
|
this.leafletLayersPerId.set(key, {
|
|
feature: feature,
|
|
activateFunc: activate,
|
|
})
|
|
if (Hash.hash.data === key) {
|
|
activate(null)
|
|
}
|
|
}
|
|
}
|