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feeview: slider w step #332

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merged 1 commit into from
Nov 7, 2025
Merged

feeview: slider w step #332

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116 changes: 67 additions & 49 deletions BDKSwiftExampleWallet/View/Send/FeeView.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -24,62 +24,44 @@ struct FeeView: View {

Spacer()

HStack {
Spacer()

Picker("Select Fee", selection: $viewModel.selectedFeeIndex) {
HStack {
Image(
systemName: "bitcoinsign.gauge.chart.leftthird.topthird.rightthird",
variableValue: 0.0
)
Text(
" None • \(viewModel.recommendedFees?.minimumFee ?? 1)"
)
}
.tag(0)
HStack {
Image(
systemName: "bitcoinsign.gauge.chart.leftthird.topthird.rightthird",
variableValue: 0.33
)
Text(
" Low • \(viewModel.recommendedFees?.hourFee ?? 1)"
)
}
.tag(1)
HStack {
Image(
systemName: "bitcoinsign.gauge.chart.leftthird.topthird.rightthird",
variableValue: 0.66
)
Text(
" Medium • \(viewModel.recommendedFees?.halfHourFee ?? 1)"
)
}
.tag(2)
HStack {
Image(
systemName: "bitcoinsign.gauge.chart.leftthird.topthird.rightthird",
variableValue: 1.0
)
Text(
" High • \(viewModel.recommendedFees?.fastestFee ?? 1)"
)
}
.tag(3)
VStack(spacing: 12) {
Slider(
value: feeSliderBinding,
in: 0...3,
step: 1
) {
Text("Fee Priority")
} minimumValueLabel: {
Text(feeTitle(for: 0))
} maximumValueLabel: {
Text(feeTitle(for: 3))
}
.pickerStyle(.automatic)
.tint(.primary)
.accessibilityLabel("Select Transaction Fee")
.accessibilityValue("\(viewModel.selectedFee ?? 1) satoshis per vbyte")

Text("sat/vb")
.foregroundStyle(.secondary)
.fontWeight(.thin)
HStack(spacing: 8) {
ForEach(0..<4, id: \.self) { index in
VStack(spacing: 4) {
feeIcon(for: index)
.font(.headline)
Text("\(feeTitle(for: index)) • \(feeValue(for: index))")
.font(.caption2)
.multilineTextAlignment(.center)
.foregroundStyle(
index == viewModel.selectedFeeIndex
? .primary : .secondary
)
}
.frame(maxWidth: .infinity)
}
}

Spacer()
Text("Selected: \(viewModel.selectedFee ?? 1) sat/vb fee")
.font(.footnote)
.foregroundStyle(.secondary)
}
.padding(.horizontal)

Spacer()

Expand Down Expand Up @@ -128,6 +110,42 @@ struct FeeView: View {

}

extension FeeView {
fileprivate var feeSliderBinding: Binding<Double> {
Binding(
get: { Double(viewModel.selectedFeeIndex) },
set: { viewModel.selectedFeeIndex = Int($0.rounded()) }
)
}

fileprivate func feeValue(for index: Int) -> Int {
guard let fees = viewModel.recommendedFees else { return 1 }
switch index {
case 0: return fees.minimumFee
case 1: return fees.hourFee
case 2: return fees.halfHourFee
default: return fees.fastestFee
}
}

fileprivate func feeTitle(for index: Int) -> String {
switch index {
case 0: return "None"
case 1: return "Low"
case 2: return "Medium"
default: return "High"
}
}

@ViewBuilder
fileprivate func feeIcon(for index: Int) -> some View {
Image(
systemName: "bitcoinsign.gauge.chart.leftthird.topthird.rightthird",
variableValue: Double(index) / 3.0
)
}
}

#if DEBUG
#Preview {
FeeView(
Expand Down