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// Copyright 2016 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 SwitchBasemapViewController: UIViewController {
@IBOutlet private weak var mapView: AGSMapView! {
didSet {
// Initialize the map with the first basemap.
mapView.map = AGSMap(basemap: basemapInfoArray.first!.basemap)
}
}
/// The basemap options plus labels.
private let basemapInfoArray: [(basemap: AGSBasemap, label: String)] = [
(.init(style: .arcGISDarkGrayBase), "Dark Gray Canvas"),
(.init(style: .arcGISImageryStandard), "Imagery"),
(.init(style: .arcGISImagery), "Imagery w/ Labels"),
(.init(style: .arcGISLightGrayBase), "Light Gray Canvas"),
(.init(style: .arcGISNavigation), "Navigation"),
(.init(style: .arcGISNavigationNight), "Navigation Night"),
(.init(style: .arcGISOceans), "Oceans"),
(.init(style: .osmStreets), "OpenStreetMap"),
(.init(style: .arcGISStreets), "Streets"),
(.init(style: .arcGISStreetsNight), "Streets Night"),
(.init(style: .osmStreetsRelief), "Streets w/ Relief"),
(.init(style: .arcGISTerrain), "Terrain w/ Labels"),
(.init(style: .arcGISTopographic), "Topographic"),
(.init(style: .arcGISHillshadeLight), "Hillshade Light"),
(.init(style: .arcGISHillshadeDark), "Hillshade Dark"),
(.init(style: .arcGISNova), "Nova")
]
override func viewDidLoad() {
super.viewDidLoad()
// Add the source code button item to the right of navigation bar.
(navigationItem.rightBarButtonItem as! SourceCodeBarButtonItem).filenames = [
"SwitchBasemapViewController",
"OptionsTableViewController"
]
}
@IBAction func changeBasemapAction(_ sender: UIBarButtonItem) {
guard let basemap = mapView.map?.basemap,
// Get the index of the basemap currently shown in the map.
let selectedIndex = basemapInfoArray.firstIndex(where: { $0.basemap == basemap }) else {
return
}
let basemapLabels = basemapInfoArray.map { $0.label }
/// A view controller allowing the user to select the basemap to show.
let controller = OptionsTableViewController(labels: basemapLabels, selectedIndex: selectedIndex) { [weak self] (newIndex) in
if let self = self {
// Update the map with the selected basemap.
self.mapView?.map?.basemap = self.basemapInfoArray[newIndex].basemap
}
}
// Configure the options controller as a popover.
controller.modalPresentationStyle = .popover
controller.presentationController?.delegate = self
controller.preferredContentSize = CGSize(width: 300, height: 300)
controller.popoverPresentationController?.barButtonItem = sender
controller.popoverPresentationController?.passthroughViews?.append(mapView)
// Show the popover.
present(controller, animated: true)
}
}
extension SwitchBasemapViewController: UIAdaptivePresentationControllerDelegate {
func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
// Show presented controller as popovers even on small displays.
return .none
}
}
