taler-ios

iOS apps for GNU Taler (wallet)
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ChoicesView.swift (3462B)

      1 /*
      2  * This file is part of GNU Taler, ©2022-26 Taler Systems S.A.
      3  * See LICENSE.md
      4  */
      5 /**
      6  * @author Marc Stibane
      7  */
      8 import SwiftUI
      9 import taler_swift
     10 
     11 struct ChoicesView: View, Sendable {
     12     let stack: CallStack
     13     let choiceTriple: [ChoiceTriple]
     14     let showHeader: Bool
     15     let automaticIndex: Int?
     16     @Binding var selectedChoice: Int?
     17 
     18     @ViewBuilder
     19     func selectedBackground(_ useColor: Bool) -> some View {
     20         let is26: Bool = if #available(iOS 26.0, *) { true } else { false }
     21         let color: Color = useColor ? WalletColors().primaryAccent
     22                                     : .secondary
     23         if #available(iOS 17.0, *) {
     24             RoundedRectangle(cornerRadius: is26 ? 26 : 10)
     25                 .fill(.background)
     26                 .strokeBorder(color, lineWidth: 2.4)
     27         } else {
     28             RoundedRectangle(cornerRadius: 10)
     29                 .strokeBorder(color, lineWidth: 2.4)
     30                 .foregroundColor(Color.clear)
     31         }
     32     }
     33 
     34     var body: some View {
     35         ForEach(choiceTriple, id: \.1) { choice in
     36             let selectionDetail: ChoiceSelectionDetail = choice.0
     37             let contractChoice: ContractChoice = choice.1
     38             let index: Int = choice.2
     39             let isPaymentPossible = selectionDetail.status == .paymentPossible
     40             let payAutomatic = automaticIndex == index
     41             let scopeInfo = selectionDetail.scopeInfo
     42             let amount = selectionDetail.amountRaw
     43             /// If it contains money, always show it. Disable but don’t hide it if insufficient - that serves as advertisement what you could buy if you had more money / tokens.
     44             /// If it only contains tokens, and insufficient, then hide it. Most probably there is a money payment option to acquire those tokens, which is advertisement enough.
     45             /// Tokens only, paymentPossible. If automaticIndex, then also hide it (and auto-pay it). Otherwise show it, so the user can select it.
     46             if (!amount.isZero || isPaymentPossible) && !payAutomatic {
     47                 Section {
     48                     let amountV = HStack {
     49                         Spacer()
     50                         AmountV(stack: stack.push(),
     51                                 scope: scopeInfo,
     52                                amount: contractChoice.amount)
     53                             .foregroundColor(isPaymentPossible ? .primary : .secondary  )
     54                     } .overlay {
     55                         Color.primary.opacity(INVISIBLE)        // Color.clear doesn't accept taps!
     56                             .contentShape(.rect)
     57                             .onTapGesture {
     58                                 if isPaymentPossible {
     59                                     selectedChoice = index
     60                                 }
     61                             }
     62                     }
     63                     if index == selectedChoice {
     64                         amountV.listRowBackground (
     65                             selectedBackground(isPaymentPossible)
     66 //                          .padding(.top, n == 1 ? 0 : -15)
     67 //                          .padding(.bottom, n == 10 ? 0 : -15)
     68                         )
     69                     } else {
     70                         amountV
     71                     }
     72                 } header: {
     73                     if showHeader {
     74                         if let description = contractChoice.descI18n {
     75                             Text(description)
     76                 }   }   }
     77             }
     78         }
     79     }
     80 }