Searchable

import Foundation
import SwiftUI
enum SearchablePlaygroundType: String, CaseIterable {
 case list
 case plainList
 case submit
 case isSearching
 var title: String {
 switch self {
 case .list:
 return "List"
 case .plainList:
 return "Plain style"
 case .submit:
 return "Submit"
 case .isSearching:
 return "isSearching"
 }
 }
}
struct SearchablePlayground: View {
 var body: some View {
 List(SearchablePlaygroundType.allCases, id: \.self) { type in
 NavigationLink(type.title, value: type)
 }
 .toolbar {
 PlaygroundSourceLink(file: "SearchablePlayground.swift")
 }
 .navigationDestination(for: SearchablePlaygroundType.self) {
 switch 0ドル {
 case .list:
 ListSearchablePlayground()
 .navigationTitle(0ドル.title)
 case .plainList:
 PlainListSearchablePlayground()
 .navigationTitle(0ドル.title)
 case .submit:
 SubmitSearchablePlayground()
 .navigationTitle(0ドル.title)
 case .isSearching:
 IsSearchingSearchablePlayground()
 .navigationTitle(0ドル.title)
 }
 }
 }
}
struct ListSearchablePlayground: View {
 @State var searchText = ""
 var body: some View {
 List {
 ForEach(matchingAnimals(), id: \.self) {
 Text(0ドル)
 }
 }
 .searchable(text: $searchText)
 }
 func matchingAnimals() -> [String] {
 return animals().filter {
 0ドル.lowercased().starts(with: searchText.lowercased().trimmingCharacters(in: .whitespacesAndNewlines))
 }
 }
}
struct PlainListSearchablePlayground: View {
 @State var searchText = ""
 var body: some View {
 List {
 ForEach(matchingAnimals(), id: \.self) {
 Text(0ドル)
 }
 }
 .listStyle(.plain)
 .searchable(text: $searchText)
 }
 func matchingAnimals() -> [String] {
 return animals().filter {
 0ドル.lowercased().starts(with: searchText.lowercased().trimmingCharacters(in: .whitespacesAndNewlines))
 }
 }
}
struct SubmitSearchablePlayground: View {
 @State var searchText = ""
 @State var matchingAnimals = animals()
 var body: some View {
 List {
 ForEach(matchingAnimals, id: \.self) {
 Text(0ドル)
 }
 }
 .searchable(text: $searchText)
 .onSubmit(of: .search) {
 matchingAnimals = animals().filter {
 0ドル.lowercased().starts(with: searchText.lowercased().trimmingCharacters(in: .whitespacesAndNewlines))
 }
 }
 }
}
struct IsSearchingSearchablePlayground: View {
 @State var searchText = ""
 var body: some View {
 IsSearchingView()
 .searchable(text: $searchText)
 }
 private struct IsSearchingView: View {
 @Environment(\.isSearching) var isSearching
 var body: some View {
 List {
 Text("isSearching:")
 if isSearching {
 Text("YES").foregroundStyle(.green)
 } else {
 Text("NO").foregroundStyle(.red)
 }
 }
 }
 }
}
func animals() -> [String] {
 return [
 "Alligator",
 "Ant",
 "Bat",
 "Bear",
 "Cat",
 "Cheetah",
 "Dog",
 "Dolphin",
 "Eagle",
 "Elephant",
 "Flamingo",
 "Fox",
 "Goat",
 "Gorilla",
 "Hippo",
 "Horse",
 "Ibis",
 "Insect",
 "Jackrabbit",
 "Jellyfish",
 "Kangaroo",
 "Kingfisher",
 "Lampfish",
 "Llama",
 "Manitee",
 "Monkey",
 "Narwhal",
 "Nightingale",
 "Octopus",
 "Ocelot",
 "Penguin",
 "Pufferfish",
 "Quahog",
 "Quail",
 "Rat",
 "Rhinocerous",
 "Snake",
 "Squirrel",
 "Tarantula",
 "Turtle",
 "Unicorn",
 "Vole",
 "Vulture",
 "Walrus",
 "Whale",
 "Yak",
 "Zebra"
 ]
}