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annotate Simoleon/Favourites.swift @ 30:f76d0e26c178

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Add localisation
author Dennis Concepción Martín <dennisconcepcionmartin@gmail.com>
date Fri, 23 Jul 2021 13:19:28 +0100
parents c52966834f83
children 41a905e591e4
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1 //
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2 // Favourites.swift
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3 // Simoleon
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4 //
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5 // Created by Dennis Concepción Martín on 19/07/2021.
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6 //
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7
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8 import SwiftUI
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9
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10 struct Favourites: View {
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11 @Environment(\.managedObjectContext) private var viewContext
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12 @FetchRequest(
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13 sortDescriptors: [NSSortDescriptor(keyPath: \Favourite.currencyPair, ascending: true)],
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14 animation: .default)
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15 private var favourite: FetchedResults<Favourite>
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16
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17 var body: some View {
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18 VStack {
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19 if favourite.isEmpty {
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20 Group {
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21 Text("Tap ", comment: "First line when favourites are empty") + Text(Image(systemName: "star"))
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22 Text("to add a currency pair to favourites", comment: "Finish line when favourites are empty")
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23 .padding(.top, 5)
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24 }
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25 .foregroundColor(Color(.systemGray))
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26 } else {
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27 List {
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28 ForEach(favourite) { favourite in
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29 NavigationLink(destination: Conversion(fetchUserSettings: false, currencyPair: favourite.currencyPair)) {
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30 CurrencyRow(currencyPair: favourite.currencyPair)
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31 }
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32 }
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33 .onDelete(perform: removeFromFavourites)
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34 }
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35 .listStyle(PlainListStyle())
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36 }
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37 }
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38 .navigationTitle(Text("Favourites", comment: "Navigation title"))
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39 .toolbar {
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40 #if os(iOS)
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41 EditButton()
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42 #endif
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43 }
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44 .if(UIDevice.current.userInterfaceIdiom == .phone) { content in
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45 NavigationView { content }
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46 }
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47 }
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48
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49 private func removeFromFavourites(offsets: IndexSet) {
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50 withAnimation {
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51 offsets.map { favourite[$0] }.forEach(viewContext.delete)
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52
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53 do {
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54 try viewContext.save()
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55 } catch {
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56 let nsError = error as NSError
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57 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
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58 }
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59 }
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60 }
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61 }
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62
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63 struct Favourites_Previews: PreviewProvider {
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64 static var previews: some View {
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65 Favourites()
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66 .environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
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67 }
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68 }