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annotate Simoleon/Helpers/CurrencySelector.swift @ 21:c3dda63f50ed v1.1

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Added Core Data and UI changes - Implement Watchlist - Change conversion design - Improve UX
author Dennis Concepción Martín <dennisconcepcionmartin@gmail.com>
date Mon, 19 Jul 2021 19:27:12 +0100
parents 94fd7ac93060
children 4f862c618b44
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1 //
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2 // CurrencySelector.swift
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3 // Simoleon
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4 //
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5 // Created by Dennis Concepción Martín on 18/07/2021.
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6 //
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7
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8 import SwiftUI
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10 struct CurrencySelector: View {
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11 @Binding var currencyPair: String
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12 @Binding var showingCurrencySelector: Bool
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13 @State private var searchCurrency = ""
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14 @State private var searching = false
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16 var body: some View {
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17 NavigationView {
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18 Form {
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19 TextField("Search ...", text: $searchCurrency) { startedEditing in
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20 if startedEditing {
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21 withAnimation {
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22 searching = true
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23 }
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24 }
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25 } onCommit: {
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26 withAnimation {
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27 searching = false
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28 }
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29 }
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31 Section(header: Text("All currencies")) {
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32 ForEach(currencyPairs(), id: \.self) { currencyPair in
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33 Button(action: {
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34 self.currencyPair = currencyPair
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35 showingCurrencySelector = false
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36 }) {
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37 CurrencyRow(currencyPair: currencyPair)
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38 }
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39 }
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40 }
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41 }
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42 .gesture(DragGesture()
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43 .onChanged({ _ in
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44 UIApplication.shared.dismissKeyboard()
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45 })
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46 )
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47 .navigationTitle("Currencies")
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48 .navigationBarTitleDisplayMode(.inline)
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49 .toolbar {
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50 ToolbarItem(placement: .confirmationAction) {
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51 Button("OK", action: { showingCurrencySelector = false })
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52 }
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54 ToolbarItem(placement: .cancellationAction) {
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55 if searching {
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56 Button("Cancel") {
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57 searchCurrency = ""
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58 withAnimation {
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59 searching = false
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60 UIApplication.shared.dismissKeyboard()
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61 }
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62 }
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63 }
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64 }
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65 }
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66 }
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67 }
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69 private func currencyPairs() -> [String] {
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70 let currencyPairs: [String] = parseJson("CurrencyPairs.json")
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72 if searchCurrency.isEmpty {
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73 return currencyPairs
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74 } else {
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75 return currencyPairs.filter { $0.contains(searchCurrency.uppercased()) }
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76 }
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77 }
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78 }
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81 struct CurrencySelector_Previews: PreviewProvider {
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82 static var previews: some View {
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83 CurrencySelector(currencyPair: .constant("USD/GBP"), showingCurrencySelector: .constant(false))
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84 }
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85 }