GeometryEditorToolbar - Add example
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| // Copyright 2026 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 | ||||||
| // | ||||||
| // https://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. | ||||||
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| import ArcGIS | ||||||
| import ArcGISToolkit | ||||||
| import SwiftUI | ||||||
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| struct GeometryEditorToolbarExampleView: View { | ||||||
| /// The feature whose geometry is currently being edited. | ||||||
| @State private var featureBeingEdited: Feature? | ||||||
| /// A description of an error that has occurred. | ||||||
| @State private var errorDescription: String? | ||||||
| /// The geometry editor used to edit geometries on the map. | ||||||
| @State private var geometryEditor = GeometryEditor() | ||||||
| /// The point on the screen that is being identified. | ||||||
| @State private var identifyPoint: CGPoint? | ||||||
| /// A Boolean value indicating whether the geometry edits are being saved. | ||||||
| @State private var isSavingEdits = false | ||||||
| /// A map containing example point, line, and polygon features to edit. | ||||||
| @State private var map: Map = { | ||||||
| let url = URL( | ||||||
| string: "https://arcgis.com/home/item.html?id=2ffa0c3601144e8bbd2c49cf3a7c0559" | ||||||
| )! | ||||||
| let map = Map(url: url)! | ||||||
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| let envelope = Envelope(xRange: -13059996 ... -13021110, yRange: 4005439...4068056) | ||||||
| map.initialViewpoint = Viewpoint(boundingGeometry: envelope) | ||||||
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| return map | ||||||
| }() | ||||||
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| var body: some View { | ||||||
| MapViewReader { mapViewProxy in | ||||||
| MapView(map: map) | ||||||
| .geometryEditor(geometryEditor) | ||||||
| .onSingleTapGesture { screenPoint, _ in | ||||||
| guard identifyPoint == nil, featureBeingEdited == nil else { return } | ||||||
| identifyPoint = screenPoint | ||||||
| } | ||||||
| .task(id: identifyPoint) { | ||||||
| guard let identifyPoint else { return } | ||||||
| defer { self.identifyPoint = nil } | ||||||
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| do { | ||||||
| try await editFeature(at: identifyPoint, mapViewProxy: mapViewProxy) | ||||||
| } catch { | ||||||
| errorDescription = "\(error)" | ||||||
| } | ||||||
|
CalebRas marked this conversation as resolved.
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| } | ||||||
| } | ||||||
| .overlay(alignment: .topTrailing) { | ||||||
| GeometryEditorToolbar(geometryEditor: geometryEditor) | ||||||
| .padding() | ||||||
| } | ||||||
| .toolbar { | ||||||
| ToolbarItemGroup(placement: .bottomBar) { | ||||||
| finishEditingButtons | ||||||
| } | ||||||
| } | ||||||
| .alert( | ||||||
| "Error", | ||||||
| isPresented: Binding( | ||||||
| get: { errorDescription != nil }, | ||||||
| set: { _ in errorDescription = nil } | ||||||
| ), | ||||||
| actions: {}, | ||||||
| message: { | ||||||
| Text(errorDescription ?? "An unknown error occurred") | ||||||
| } | ||||||
| ) | ||||||
| } | ||||||
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| /// Buttons for ending a geometry editing session. | ||||||
| @ViewBuilder private var finishEditingButtons: some View { | ||||||
| let canFinishEditing = featureBeingEdited != nil && !isSavingEdits | ||||||
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| Button("Cancel", systemImage: "xmark", role: .cancel) { | ||||||
| geometryEditor.stop() | ||||||
| featureBeingEdited?.setVisible(true) | ||||||
| featureBeingEdited = nil | ||||||
|
Comment on lines
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Collaborator
There was a problem hiding this comment. if let feature = featureBeingEdited.take() {
feature.setVisible(true)
}take it or leave it ;-) |
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| } | ||||||
| .disabled(!canFinishEditing) | ||||||
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| Button("Save", systemImage: "checkmark") { | ||||||
| isSavingEdits = true | ||||||
| } | ||||||
| .disabled(!canFinishEditing) | ||||||
| .task(id: isSavingEdits) { | ||||||
| guard isSavingEdits else { return } | ||||||
| defer { isSavingEdits = false } | ||||||
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| do { | ||||||
| try await saveEdits() | ||||||
| } catch { | ||||||
| self.errorDescription = "\(error)" | ||||||
|
Collaborator
There was a problem hiding this comment.
Suggested change
|
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| } | ||||||
|
CalebRas marked this conversation as resolved.
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| } | ||||||
| } | ||||||
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| /// Identifies a feature at a given screen point and starts editing its geometry. | ||||||
| /// - Parameters: | ||||||
| /// - screenPoint: The point on the screen to identify. | ||||||
| /// - mapViewProxy: A map view proxy used to perform the identify operation. | ||||||
| private func editFeature(at screenPoint: CGPoint, mapViewProxy: MapViewProxy) async throws { | ||||||
| let identifyLayerResults = try await mapViewProxy.identifyLayers( | ||||||
| screenPoint: screenPoint, | ||||||
| tolerance: 10 | ||||||
| ) | ||||||
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| guard let result = identifyLayerResults.first, | ||||||
| let feature = result.geoElements.first as? ArcGISFeature, | ||||||
| let geometry = feature.geometry else { | ||||||
| return | ||||||
| } | ||||||
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| geometryEditor.start(withInitial: geometry) | ||||||
| feature.setVisible(false) | ||||||
| featureBeingEdited = feature | ||||||
| } | ||||||
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| /// Saves the geometry editor edits to the feature being edited. | ||||||
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Collaborator
There was a problem hiding this comment. Maybe add a note to explain that the edits aren't applied to the feature service, and is only saved to the local feature table. |
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| private func saveEdits() async throws { | ||||||
| let geometry = geometryEditor.stop() | ||||||
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| guard let featureBeingEdited else { return } | ||||||
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| featureBeingEdited.geometry = geometry | ||||||
| featureBeingEdited.setVisible(true) | ||||||
| self.featureBeingEdited = nil | ||||||
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Collaborator
There was a problem hiding this comment. Should the |
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| try await featureBeingEdited.table?.update(featureBeingEdited) | ||||||
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Collaborator
There was a problem hiding this comment. Guard the table as well, so no need optional chaining. |
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| } | ||||||
|
CalebRas marked this conversation as resolved.
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| } | ||||||
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| // MARK: - Extensions | ||||||
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| private extension Feature { | ||||||
| /// Sets the visibility of the feature on its feature layer. | ||||||
| /// - Parameter visible: `true` to show the feature, otherwise `false`. | ||||||
| func setVisible(_ visible: Bool) { | ||||||
| guard let featureLayer = table?.layer as? FeatureLayer else { return } | ||||||
| featureLayer.setVisible(visible, for: self) | ||||||
| } | ||||||
| } | ||||||
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