]> git.r.bdr.sh - rbdr/map/blame_incremental - Map/Views/ContentView.swift
Make delete a context action
[rbdr/map] / Map / Views / ContentView.swift
... / ...
CommitLineData
1//
2// ContentView.swift
3// Map
4//
5// Created by Ruben Beltran del Rio on 2/1/21.
6//
7
8import CoreData
9import SwiftUI
10
11struct 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 }.contextMenu {
41 Button(action: { store.send(.deleteMap(map: map))}) {
42 Image(systemName: "trash")
43 Text("Delete")
44 }
45 }
46 }
47 .onDelete(perform: deleteMaps)
48 }.frame(minWidth: 250.0, alignment: .leading)
49 .toolbar {
50 HStack {
51 Button(action: toggleSidebar) {
52 Label("Toggle Sidebar", systemImage: "sidebar.left")
53 }
54 Button(action: addMap) {
55 Label("Add Map", systemImage: "plus")
56 }
57 }
58 }
59 DefaultMapView()
60 }
61 }
62
63 private func toggleSidebar() {
64 NSApp.keyWindow?.firstResponder?.tryToPerform(
65 #selector(NSSplitViewController.toggleSidebar(_:)), with: nil)
66 }
67
68 private func addMap() {
69 withAnimation {
70 let newMap = Map(context: viewContext)
71 newMap.uuid = UUID()
72 newMap.createdAt = Date()
73 newMap.title = "Map \(newMap.createdAt!.format())"
74 newMap.content = ""
75
76 do {
77 try viewContext.save()
78 } catch {
79 let nsError = error as NSError
80 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
81 }
82 }
83 }
84
85 private func deleteMaps(offsets: IndexSet) {
86
87 withAnimation {
88 offsets.map { maps[$0] }.forEach(viewContext.delete)
89
90 do {
91 try viewContext.save()
92 } catch {
93 let nsError = error as NSError
94 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
95 }
96 }
97 }
98}
99
100private let mapFormatter: DateFormatter = {
101 let formatter = DateFormatter()
102 formatter.dateStyle = .short
103 formatter.timeStyle = .none
104 return formatter
105}()
106
107struct ContentView_Previews: PreviewProvider {
108 static var previews: some View {
109 ContentView().environment(
110 \.managedObjectContext, PersistenceController.preview.container.viewContext)
111 }
112}