git.r.bdr.sh - rbdr/map/blob - 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           }.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
 100 private let mapFormatter: DateFormatter = {
 101   let formatter = DateFormatter()
 102   formatter.dateStyle = .short
 103   formatter.timeStyle = .none
 104   return formatter
 105 }()
 106
 107 struct ContentView_Previews: PreviewProvider {
 108   static var previews: some View {
 109     ContentView().environment(
 110       \.managedObjectContext, PersistenceController.preview.container.viewContext)
 111   }
 112 }