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|
import SwiftUI
struct MullvadPrimaryTextField: View {
private let label: String
private let placeholder: String
@Binding private var text: String
@Binding private var suggestion: String?
private let validate: ((String) -> Bool)?
private let keyboardType: UIKeyboardType?
init(
label: String,
placeholder: String,
text: Binding<String>,
suggestion: Binding<String?>? = nil,
validate: ((String) -> Bool)? = nil,
keyboardType: UIKeyboardType? = nil
) {
self.label = label
self.placeholder = placeholder
self._text = text
self._suggestion = suggestion ?? .constant(nil)
self.validate = validate
self.keyboardType = keyboardType
}
var isValid: Bool {
validate?(text) ?? true
}
@FocusState private var isFocused: Bool
@Environment(\.isEnabled) private var isEnabled
private var showSuggestion: Bool {
if let suggestion,
!suggestion.isEmpty,
suggestion != text,
isEnabled
{
return true
}
return false
}
private var textFieldComponent: some View {
TextField(
placeholder,
text: $text,
prompt: Text(placeholder)
.foregroundColor(
isEnabled ? .MullvadTextField.inputPlaceholder : .MullvadTextField.textDisabled
)
)
.focused($isFocused)
.padding(.vertical, 12)
}
var body: some View {
VStack(alignment: .leading) {
Text(label)
.foregroundColor(.MullvadTextField.label)
VStack(spacing: 0) {
HStack(spacing: 4) {
if let keyboardType {
textFieldComponent.keyboardType(keyboardType)
} else {
textFieldComponent
}
if !text.isEmpty && isEnabled {
Button {
withAnimation {
text = ""
}
} label: {
Image.mullvadIconCross
}
.padding(0)
}
}
.zIndex(1)
.padding(.horizontal, 8)
.background(
isEnabled
? Color.MullvadTextField.background
: Color.MullvadTextField
.backgroundDisabled
)
.foregroundColor(isEnabled ? .MullvadTextField.textInput : .MullvadTextField.textDisabled)
.overlay {
if isFocused {
RoundedCorner(
cornerRadius: 4,
corners: !showSuggestion
? [.allCorners]
: [
.topLeft,
.topRight,
]
)
.stroke(
isValid
? Color.MullvadTextField.borderFocused
: Color.MullvadTextField.borderError,
lineWidth: 4
)
} else if isEnabled {
RoundedCorner(
cornerRadius: 4,
corners: !showSuggestion
? [.allCorners]
: [
.topLeft,
.topRight,
]
)
.stroke(
isValid
? Color.MullvadTextField.border
: Color.MullvadTextField.borderError,
lineWidth: 2
)
}
}
.clipShape(
RoundedCorner(
cornerRadius: 4,
corners: !showSuggestion
? [.allCorners]
: [
.topLeft,
.topRight,
]
))
if showSuggestion,
let suggestion
{
HStack {
Button {
withAnimation {
text = suggestion
}
} label: {
Text(suggestion)
.foregroundColor(.MullvadTextField.textInput)
Spacer()
}
Button {
withAnimation {
self.suggestion = nil
}
} label: {
Image.mullvadIconCross
}
}
.transition(.move(edge: .top))
.padding(.horizontal, 8)
.padding(.vertical, 12)
.background(Color.MullvadTextField.backgroundSuggestion)
}
}
.clipShape(
RoundedCorner(cornerRadius: 4)
)
}
.transformEffect(.identity)
.animation(.default, value: showSuggestion)
}
}
private struct RoundedCorner: Shape {
var cornerRadius: CGFloat = .infinity
var corners: UIRectCorner = .allCorners
var insertBy: CGFloat = 0
func path(in rect: CGRect) -> Path {
let insetRect = rect.insetBy(dx: insertBy, dy: insertBy)
let path = UIBezierPath(
roundedRect: insetRect,
byRoundingCorners: corners,
cornerRadii: CGSize(width: cornerRadius, height: cornerRadius)
)
return Path(path.cgPath)
}
}
@available(iOS 17.0, *)
#Preview {
@Previewable @State var suggestion: String? = "1234"
@Previewable @State var text = ""
VStack {
MullvadPrimaryTextField(
label: "Label",
placeholder: "Placeholder text",
text: $text,
suggestion: $suggestion
)
MullvadPrimaryTextField(
label: "Label",
placeholder: "Placeholder text",
text: $text,
suggestion: $suggestion,
validate: { _ in
false
}
)
MullvadPrimaryTextField(
label: "Label",
placeholder: "Placeholder text",
text: $text,
suggestion: $suggestion
)
.disabled(true)
}
.padding()
.background(Color.yellow)
}
class UIMullvadPrimaryTextField: UIHostingController<UIMullvadPrimaryTextField.Wrapper> {
var text: String {
get {
rootView.text
}
set {
rootView.text = newValue
}
}
struct Wrapper: View {
let label: String
let placeholder: String
@State var text = ""
@State var suggestion: String?
let validate: ((String) -> Bool)?
var contentType: UITextContentType?
var keyboardType: UIKeyboardType = .default
var submitLabel: SubmitLabel?
var body: some View {
MullvadPrimaryTextField(
label: label,
placeholder: placeholder,
text: $text,
suggestion: $suggestion,
validate: validate
)
.textContentType(contentType)
.keyboardType(keyboardType)
.apply {
if let submitLabel {
$0.submitLabel(submitLabel)
} else {
$0
}
}
}
}
init(
label: String,
placeholder: String,
validate: ((String) -> Bool)? = nil,
contentType: UITextContentType? = nil,
keyboardType: UIKeyboardType = .default
) {
let rootView = Wrapper(
label: label,
placeholder: placeholder,
validate: validate,
contentType: contentType,
keyboardType: keyboardType
)
super.init(rootView: rootView)
}
override func viewDidLoad() {
view.backgroundColor = .clear
}
required init?(coder aDecoder: NSCoder) {
fatalError("Not implemented")
}
}
struct UIMullvadPrimaryTextFieldRepresentable: UIViewRepresentable {
func makeCoordinator() -> Coordinator {
Coordinator()
}
func makeUIView(context: Context) -> UIView {
let controller = UIMullvadPrimaryTextField(label: "Label", placeholder: "Placeholder")
context.coordinator.controller = controller
return controller.view
}
func updateUIView(_ uiView: UIView, context: Context) {}
class Coordinator {
var controller: UIMullvadPrimaryTextField?
}
}
#Preview {
UIMullvadPrimaryTextFieldRepresentable()
.padding()
.background(Color.yellow)
}
|
