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annotate Simoleon/UI/CurrencyList.swift @ 162:f5de15e06c77

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Refactor code
author Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
date Tue, 31 Aug 2021 13:04:28 +0100
parents 3913aff613e8
children 1940db1ef321
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1 //
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2 // CurrencyList.swift
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3 // Simoleon
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4 //
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5 // Created by Dennis Concepción Martín on 24/8/21.
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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 CurrencyList: View {
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11 var currencies: [String]
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12 var selection: Selection
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13 @ObservedObject var currencyConversion: CurrencyConversion
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14 @State private var searchCurrency = ""
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15
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16 @Environment(\.presentationMode) private var presentation
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17 let currencyDetails: [String: CurrencyModel] = try! readJson(from: "Currencies.json")
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18
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19 var searchResults: [String] {
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20 if searchCurrency.isEmpty {
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21 return currencies.sorted()
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22 } else {
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23 return currencies.filter {$0.contains(searchCurrency.uppercased())}
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24 }
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25 }
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26
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27 var body: some View {
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28 NavigationView {
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29 List {
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30 SearchBar(placeholder: "Search...", text: $searchCurrency)
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31 .padding(.vertical)
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32 .accessibilityIdentifier("CurrencySearchBar")
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33
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34 ForEach(searchResults, id: \.self) { symbol in
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35 Button(action: {
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36 if selection == .baseSymbol {
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37 currencyConversion.baseSymbol = symbol
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38 } else {
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39 currencyConversion.quoteSymbol = symbol
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40 }
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41
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42 presentation.wrappedValue.dismiss()
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43 }) {
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44 let currency = currencyDetails[symbol]!
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45 CurrencyRow(currency: currency)
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46 }
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47 }
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48 }
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49 .listStyle()
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50 .navigationTitle("Currencies")
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51 .navigationBarTitleDisplayMode(.inline)
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52 .toolbar {
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53 ToolbarItem(placement: .cancellationAction) {
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54 Button(action: { presentation.wrappedValue.dismiss() }) {
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55 Text("Cancel")
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56 }
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57 }
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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 enum Selection {
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63 case baseSymbol, quoteSymbol
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64 }
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65 }
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66 extension View {
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67 func listStyle() -> some View {
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68 self.modifier(ListModifier())
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69 }
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70 }
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71
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72 struct CurrencyList_Previews: PreviewProvider {
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73 static var previews: some View {
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74 CurrencyList(currencies: ["USD"], selection: .baseSymbol, currencyConversion: CurrencyConversion())
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75 }
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76 }