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[rbdr/map] / Map / Views / ContentView.swift
1 //
2 // ContentView.swift
3 // Map
4 //
5 // Created by Ruben Beltran del Rio on 2/1/21.
6 //
7
8 import CoreData
9 import SwiftUI
10
11 struct ContentView: View {
12 @Environment(\.managedObjectContext) private var viewContext
13
14 @EnvironmentObject var store: AppStore
15
16 @FetchRequest(
17 sortDescriptors: [NSSortDescriptor(keyPath: \Map.createdAt, ascending: true)],
18 animation: .default)
19 private var maps: FetchedResults<Map>
20
21 var body: some View {
22 NavigationView {
23 List {
24 if maps.count == 0 {
25 DefaultMapView()
26 }
27 ForEach(maps) { map in
28 NavigationLink(destination: MapDetailView(map: map)) {
29 HStack {
30 Text(map.title ?? "Untitled Map")
31 Spacer()
32 Text(mapFormatter.string(from: (map.createdAt ?? Date())))
33 .font(.caption)
34 .padding(.vertical, 2.0)
35 .padding(.horizontal, 4.0)
36 .background(Color.accentColor)
37 .foregroundColor(Color.black)
38 .cornerRadius(2.0)
39 }.padding(.leading, 8.0)
40 }
41 }
42 .onDelete(perform: deleteMaps)
43 }.frame(minWidth: 250.0, alignment: .leading)
44 .toolbar {
45 HStack {
46 Button(action: toggleSidebar) {
47 Label("Toggle Sidebar", systemImage: "sidebar.left")
48 }
49 Button(action: addMap) {
50 Label("Add Map", systemImage: "plus")
51 }
52 }
53 }
54 }
55 }
56
57 private func toggleSidebar() {
58 NSApp.keyWindow?.firstResponder?.tryToPerform(
59 #selector(NSSplitViewController.toggleSidebar(_:)), with: nil)
60 }
61
62 private func addMap() {
63 withAnimation {
64 let newMap = Map(context: viewContext)
65 newMap.uuid = UUID()
66 newMap.createdAt = Date()
67 newMap.title = "Map \(newMap.createdAt!.format())"
68 newMap.content = ""
69
70 do {
71 try viewContext.save()
72 } catch {
73 let nsError = error as NSError
74 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
75 }
76 }
77 }
78
79 private func deleteMaps(offsets: IndexSet) {
80
81 withAnimation {
82 offsets.map { maps[$0] }.forEach(viewContext.delete)
83
84 do {
85 try viewContext.save()
86 } catch {
87 let nsError = error as NSError
88 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
89 }
90 }
91 }
92 }
93
94 private let mapFormatter: DateFormatter = {
95 let formatter = DateFormatter()
96 formatter.dateStyle = .short
97 formatter.timeStyle = .none
98 return formatter
99 }()
100
101 struct ContentView_Previews: PreviewProvider {
102 static var previews: some View {
103 ContentView().environment(
104 \.managedObjectContext, PersistenceController.preview.container.viewContext)
105 }
106 }