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Extend Example with ability to edit waypoints
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| import Foundation | ||
| import SwiftUI | ||
| import MapboxDirections | ||
|
|
||
| struct RoutesView: View { | ||
| private static let distanceFormatter: LengthFormatter = .init() | ||
| private static let travelTimeFormatter: DateComponentsFormatter = { | ||
| let f = DateComponentsFormatter() | ||
| f.unitsStyle = .short | ||
| return f | ||
| }() | ||
|
|
||
| let routes: [Route] | ||
|
|
||
| var body: some View { | ||
| ScrollView { | ||
| LazyVStack(spacing: 10, content: { | ||
| ForEach(routes, id: \.distance) { route in | ||
| VStack(alignment: .leading, spacing: 3) { | ||
| headerView(for: route) | ||
| ForEach(0..<route.legs.count, id: \.self) { legIdx in | ||
| if let source = route.legs[legIdx].source?.name, | ||
| let destination = route.legs[legIdx].destination?.name { | ||
| Text("From '\(source)' to '\(destination)'").font(.title2) | ||
| } | ||
| else { | ||
| Text("Steps:").font(.title2) | ||
| } | ||
| stepsView(for: route.legs[legIdx]) | ||
| } | ||
| } | ||
| } | ||
| }) | ||
| } | ||
| .navigationTitle("Routes") | ||
| .padding(5) | ||
| } | ||
|
|
||
| @ViewBuilder | ||
| private func headerView(for route: Route) -> some View { | ||
| VStack(alignment: .leading, spacing: 10) { | ||
| HStack { | ||
| Text("Route: ").fontWeight(.bold) | ||
| Text(route.description) | ||
| .fixedSize(horizontal: false, vertical: true) | ||
| } | ||
| HStack { | ||
| Text("Distance: ").fontWeight(.bold) | ||
| Text(formattedDistance(for:route)) | ||
| } | ||
| HStack { | ||
| Text("ETA: ").fontWeight(.bold) | ||
| Text(formattedTravelTime(for: route)) | ||
| } | ||
| HStack { | ||
| Text("Typical travel time: ").fontWeight(.bold) | ||
| Text(formattedTypicalTravelTime(for: route)) | ||
| } | ||
| Divider() | ||
| } | ||
| } | ||
|
|
||
| @ViewBuilder | ||
| private func stepsView(for leg: RouteLeg) -> some View { | ||
| LazyVStack(alignment: .leading, spacing: 5, content: { | ||
| ForEach(0..<leg.steps.count, id: \.self) { stepIdx in | ||
| HStack { | ||
| Text("\(stepIdx + 1). ").fontWeight(.bold) | ||
| Text(stepDescriptions(for: leg.steps[stepIdx])) | ||
| } | ||
| .padding([.top, .bottom], 3) | ||
|
|
||
| Divider() | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| func formattedDistance(for route: Route) -> String { | ||
| return Self.distanceFormatter.string(fromMeters: route.distance) | ||
| } | ||
|
|
||
| func formattedTravelTime(for route: Route) -> String { | ||
| return Self.travelTimeFormatter.string(from: route.expectedTravelTime)! | ||
| } | ||
|
|
||
| func formattedTypicalTravelTime(for route: Route) -> String { | ||
| if let typicalTravelTime = route.typicalTravelTime, | ||
| let formattedTypicalTravelTime = Self.travelTimeFormatter.string(from: typicalTravelTime) { | ||
| return formattedTypicalTravelTime | ||
| } | ||
| else { | ||
| return "Not available" | ||
| } | ||
| } | ||
|
|
||
| func stepDescriptions(for step: RouteStep) -> String { | ||
| var description: String = "" | ||
| let direction = step.maneuverDirection?.rawValue ?? "none" | ||
| description.append("\(step.instructions) [\(step.maneuverType) \(direction)]") | ||
| if step.distance > 0 { | ||
| let formattedDistance = Self.distanceFormatter.string(fromMeters: step.distance) | ||
| description.append(" (\(step.transportType) for \(formattedDistance))") | ||
| } | ||
| return description | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| import Foundation | ||
| import SwiftUI | ||
| import CoreLocation | ||
| import MapboxDirections | ||
|
|
||
| struct Waypoint: Identifiable, Hashable { | ||
| let id: UUID = UUID() | ||
| var latitude: CLLocationDegrees = 0 | ||
| var longitude: CLLocationDegrees = 0 | ||
| var name: String = "" | ||
|
|
||
| var native: MapboxDirections.Waypoint { | ||
| .init(coordinate: .init(latitude: latitude, longitude: longitude), name: name) | ||
| } | ||
| } | ||
|
|
||
| struct WaypointsEditor: View { | ||
| @Binding | ||
| var waypoints: [Waypoint] | ||
|
|
||
| var body: some View { | ||
| List { | ||
| ForEach(waypoints) { waypoint in | ||
| HStack { | ||
| WaypointView(waypoint: .init(get: { | ||
| self.waypoints.first(where: { $0.id == waypoint.id })! | ||
| }, set: { newValue in | ||
| self.waypoints.firstIndex(of: waypoint).map { | ||
| waypoints[$0] = newValue | ||
| } | ||
| })) | ||
|
|
||
| Menu { | ||
| Button("Insert Above") { | ||
| addNewWaypoint(before: waypoint) | ||
| } | ||
| Button("Insert Below") { | ||
| addNewWaypoint(after: waypoint) | ||
| } | ||
| } label: { | ||
| Image(systemName: "ellipsis") | ||
| .frame(width: 30, height: 30, alignment: .center) | ||
| } | ||
| } | ||
| } | ||
| .onMove { indices, newOffset in | ||
| waypoints.move(fromOffsets: indices, toOffset: newOffset) | ||
| } | ||
| .onDelete { indexSet in | ||
| waypoints.remove(atOffsets: indexSet) | ||
| } | ||
| } | ||
| .listStyle(InsetGroupedListStyle()) | ||
| .toolbar { | ||
| EditButton() | ||
| } | ||
| } | ||
|
|
||
| private func addNewWaypoint(after waypoint: Waypoint) { | ||
| guard let waypointIndex = waypoints.firstIndex(of: waypoint) else { | ||
| preconditionFailure("Waypoint is in the array of waypoints") | ||
| } | ||
| let insertionIndex = waypoints.index(after: waypointIndex) | ||
| waypoints.insert(Waypoint(), at: insertionIndex) | ||
| } | ||
| private func addNewWaypoint(before waypoint: Waypoint) { | ||
| guard let insertionIndex = waypoints.firstIndex(of: waypoint) else { | ||
| preconditionFailure("Waypoint is in the array of waypoints") | ||
| } | ||
| waypoints.insert(Waypoint(), at: insertionIndex) | ||
| } | ||
| } | ||
|
|
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| struct WaypointView: View { | ||
| @Binding | ||
| var waypoint: Waypoint | ||
|
|
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| @State | ||
| private var latitudeString: String | ||
|
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| @State | ||
| private var longitudeString: String | ||
|
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| init(waypoint: Binding<Waypoint>) { | ||
| _waypoint = waypoint | ||
| _latitudeString = State<String>(initialValue: waypoint.wrappedValue.latitude.description) | ||
| _longitudeString = .init(initialValue: waypoint.wrappedValue.longitude.description) | ||
| } | ||
|
|
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| var body: some View { | ||
| HStack { | ||
| TextField("Name", text: $waypoint.name) | ||
| TextField("Lat", text: $latitudeString, onEditingChanged: { _ in | ||
| waypoint.latitude = .init(latitudeString) ?? 0 | ||
| }) | ||
|
|
||
| TextField("Lon", text: $longitudeString, onEditingChanged: { _ in | ||
| waypoint.longitude = .init(longitudeString) ?? 0 | ||
| }) | ||
| } | ||
| } | ||
| } |
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