138 lines
4.4 KiB
Swift
138 lines
4.4 KiB
Swift
//
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// Backport.swift
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// Ferrite
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//
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// Created by Brian Dashore on 9/29/22.
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//
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import Introspect
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import SwiftUI
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public struct Backport<Content> {
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public let content: Content
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public init(_ content: Content) {
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self.content = content
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}
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}
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extension View {
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var backport: Backport<Self> { Backport(self) }
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}
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extension Backport where Content: View {
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@ViewBuilder func alert(isPresented: Binding<Bool>,
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title: String,
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message: String?,
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buttons: [AlertButton] = []) -> some View
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{
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if #available(iOS 15, *) {
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content
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.alert(
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title,
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isPresented: isPresented,
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actions: {
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ForEach(buttons) { button in
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button.toButtonView()
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}
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},
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message: {
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if let message {
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Text(message)
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}
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}
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)
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} else {
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content
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.background {
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Color.clear
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.alert(isPresented: isPresented) {
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if let primaryButton = buttons[safe: 0],
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let secondaryButton = buttons[safe: 1]
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{
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return Alert(
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title: Text(title),
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message: message.map { Text($0) } ?? nil,
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primaryButton: primaryButton.toActionButton(),
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secondaryButton: secondaryButton.toActionButton()
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)
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} else {
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return Alert(
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title: Text(title),
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message: message.map { Text($0) } ?? nil,
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dismissButton: buttons[safe: 0].map { $0.toActionButton() } ?? .cancel()
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)
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}
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}
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}
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}
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}
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@ViewBuilder func confirmationDialog(isPresented: Binding<Bool>,
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title: String, message: String?,
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buttons: [AlertButton]) -> some View
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{
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if #available(iOS 15, *) {
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content
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.confirmationDialog(
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title,
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isPresented: isPresented,
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titleVisibility: .visible
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) {
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ForEach(buttons) { button in
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button.toButtonView()
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}
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} message: {
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if let message {
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Text(message)
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}
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}
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} else {
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content
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.actionSheet(isPresented: isPresented) {
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ActionSheet(
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title: Text(title),
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message: message.map { Text($0) } ?? nil,
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buttons: [buttons.map { $0.toActionButton() }, [.cancel()]].flatMap { $0 }
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)
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}
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}
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}
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@ViewBuilder func tint(_ color: Color) -> some View {
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if #available(iOS 15, *) {
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content
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.tint(color)
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} else {
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content
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.accentColor(color)
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}
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}
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@ViewBuilder func onAppear(callback: @escaping () -> Void) -> some View {
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if #available(iOS 15, *) {
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content
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.onAppear {
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callback()
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}
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} else {
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content
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.viewDidAppear {
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callback()
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}
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}
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}
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@ViewBuilder func introspectSearchController(customize: @escaping (UISearchController) -> Void) -> some View {
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if #available(iOS 15, *) {
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content.introspectSearchController(customize: customize)
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} else {
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content.introspectNavigationController { navigationController in
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let navigationBar = navigationController.navigationBar
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if let searchController = navigationBar.topItem?.searchController {
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customize(searchController)
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}
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}
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}
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}
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}
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