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// Copyright 2020 Esri
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import UIKit
import ArcGIS
class DisplayUtilityAssociationsViewController: UIViewController {
// Set the map.
@IBOutlet var mapView: AGSMapView! {
didSet {
let map = AGSMap(basemapStyle: .arcGISTopographic)
// Add the utility network to the map.
map.utilityNetworks.add(utilityNetwork)
mapView.map = map
mapView.setViewpoint(AGSViewpoint(latitude: 41.8057655, longitude: -88.1489692, scale: 70.5310735))
mapView.graphicsOverlays.add(associationsOverlay)
}
}
@IBOutlet var toolbar: UIToolbar!
private let utilityNetwork = AGSUtilityNetwork(url: URL(string: "https://sampleserver7.arcgisonline.com/server/rest/services/UtilityNetwork/NapervilleElectric/FeatureServer")!)
private let maxScale = 2000.0
private let associationsOverlay = AGSGraphicsOverlay()
private let attachmentSymbol = AGSSimpleLineSymbol(style: .dot, color: .green, width: 5)
private let connectivitySymbol = AGSSimpleLineSymbol(style: .dot, color: .red, width: 5)
func loadUtilityNetwork() {
// WARNING: Never hardcode login information in a production application. This is done solely for the sake of the sample.
utilityNetwork.credential = AGSCredential(user: "viewer01", password: "I68VGU^nMurF")
utilityNetwork.load { [weak self] error in
guard let self = self else { return }
if let error = error {
self.presentAlert(error: error)
} else {
// Get all the edges and junctions in the network.
let sourcesByType = Dictionary(grouping: self.utilityNetwork.definition.networkSources) { $0.sourceType }
let operationalLayers = self.mapView.map?.operationalLayers
// Add all edges that are not subnet lines to the map.
let edgeLayers = sourcesByType[.edge]!
.filter { $0.sourceUsageType != .subnetLine }
.map { AGSFeatureLayer(featureTable: $0.featureTable) }
operationalLayers?.addObjects(from: edgeLayers)
// Add all the junctions to the map.
let junctionLayers = sourcesByType[.junction]!.map { AGSFeatureLayer(featureTable: $0.featureTable) }
operationalLayers?.addObjects(from: junctionLayers)
// Create a renderer for the associations.
let attachmentValue = AGSUniqueValue(description: "Attachment", label: "", symbol: self.attachmentSymbol, values: [AGSUtilityAssociationType.attachment])
let connectivityValue = AGSUniqueValue(description: "Connectivity", label: "", symbol: self.connectivitySymbol, values: [AGSUtilityAssociationType.connectivity])
self.associationsOverlay.renderer = AGSUniqueValueRenderer(fieldNames: ["AssociationType"], uniqueValues: [attachmentValue, connectivityValue], defaultLabel: "", defaultSymbol: nil)
self.createSwatches()
self.addAssociationGraphics()
self.mapViewDidChange()
}
}
}
func addAssociationGraphics() {
// Check if the current viewpoint is outside of the max scale.
if let viewpoint = mapView.currentViewpoint(with: .centerAndScale),
viewpoint.targetScale >= maxScale {
return
}
// Check if the current viewpoint has an extent.
if let viewpoint = mapView.currentViewpoint(with: .boundingGeometry) {
// Get all of the associations in extent of the viewpoint.
utilityNetwork.associations(withExtent: viewpoint.targetGeometry.extent) { [weak self] (associations, error) in
guard let self = self else { return }
if let error = error {
self.presentAlert(error: error)
} else if let associations = associations {
let graphics: [AGSGraphic] = associations.compactMap { association in
// If it the current association does not exist, add it to the graphics overlay.
let associationGID = association.globalID
guard !self.associationsOverlay.graphics.contains(where: {
($0 as! AGSGraphic).attributes["GlobalId"] as? UUID == associationGID
}) else {
return nil
}
let symbol: AGSSymbol
switch association.associationType {
case .attachment:
symbol = self.attachmentSymbol
case .connectivity:
symbol = self.connectivitySymbol
default:
return nil
}
return AGSGraphic(
geometry: association.geometry,
symbol: symbol,
attributes: [
"GlobalId": associationGID,
"AssociationType": association.associationType
]
)
}
self.associationsOverlay.graphics.addObjects(from: graphics)
}
}
}
}
// Populate the legend.
func createSwatches() {
let swatchGroup = DispatchGroup()
var attachmentImage: UIImage?
var connectivityImage: UIImage?
swatchGroup.enter()
attachmentSymbol.createSwatch(withBackgroundColor: nil, screen: .main) { (image, error) in
defer { swatchGroup.leave() }
if let error = error {
self.presentAlert(error: error)
} else if let image = image {
attachmentImage = image.withRenderingMode(.alwaysOriginal)
}
}
swatchGroup.enter()
connectivitySymbol.createSwatch(withBackgroundColor: nil, screen: .main) { (image, error) in
defer { swatchGroup.leave() }
if let error = error {
self.presentAlert(error: error)
} else if let image = image {
connectivityImage = image.withRenderingMode(.alwaysOriginal)
}
}
swatchGroup.notify(queue: .main) { [weak self] in
let attachmentBBI = UIBarButtonItem(image: attachmentImage, style: .plain, target: nil, action: nil)
let connectivityBBI = UIBarButtonItem(image: connectivityImage, style: .plain, target: nil, action: nil)
let attachmentLabel = UIBarButtonItem(title: "Attachment", style: .plain, target: nil, action: nil)
let connectivityLabel = UIBarButtonItem(title: "Connectivity", style: .plain, target: nil, action: nil)
attachmentLabel.tintColor = .label
connectivityLabel.tintColor = .label
let fixedSpace1 = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: nil, action: nil)
let fixedSpace2 = UIBarButtonItem(barButtonSystemItem: .fixedSpace, target: nil, action: nil)
let flexibleSpace1 = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
let flexibleSpace2 = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
self?.toolbar.items = [attachmentBBI, fixedSpace1, attachmentLabel, flexibleSpace1, connectivityBBI, fixedSpace2, connectivityLabel, flexibleSpace2]
}
}
// Observe the viewpoint.
func mapViewDidChange() {
self.mapView.viewpointChangedHandler = { [weak self] in
DispatchQueue.main.async {
self?.addAssociationGraphics()
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
loadUtilityNetwork()
// Add the source code button item to the right of navigation bar.
(self.navigationItem.rightBarButtonItem as? SourceCodeBarButtonItem)?.filenames = ["DisplayUtilityAssociationsViewController"]
}
}
