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BPKAppSearchModal.swift
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BPKAppSearchModal.swift
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/*
* Backpack - Skyscanner's Design System
*
* Copyright 2018-2023 Skyscanner Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import SwiftUI
public struct BPKAppSearchModal: View {
let title: String
@Binding var inputText: String
let inputPrefix: BPKSearchInputSummary.InputPrefix
let inputHint: String
let results: BPKAppSearchModalResults
let closeAccessibilityLabel: String
let onClose: () -> Void
private var textFieldState: TextFieldState = .default
@FocusState private var inputFieldIsFocussed: Bool
public init(
title: String,
inputText: Binding<String>,
inputHint: String,
results: BPKAppSearchModalResults,
closeAccessibilityLabel: String,
inputPrefix: BPKSearchInputSummary.InputPrefix = .icon(.search),
onClose: @escaping () -> Void
) {
self.title = title
self._inputText = inputText
self.inputHint = inputHint
self.results = results
self.closeAccessibilityLabel = closeAccessibilityLabel
self.inputPrefix = inputPrefix
self.onClose = onClose
}
public var body: some View {
VStack(spacing: .base) {
makeNavigationBar(title: title, closeAccessibilityLabel: closeAccessibilityLabel, onClose: onClose)
if results.showTextField {
BPKSearchInputSummary(placeholder: inputHint, inputPrefix: inputPrefix, $inputText)
.inputState(textFieldState.inputState)
.focused($inputFieldIsFocussed)
.autocorrectionDisabled(true)
}
switch results {
case .loading(let loading):
AppSearchModalLoadingView(state: loading)
case .content(let content):
AppSearchModalContentView(state: content, onScroll: onScroll(_:))
.padding(.top, .md)
case .error(let error):
AppSearchModalErrorView(state: error)
.padding(.horizontal, .md)
}
}
.padding(.horizontal, .base)
.padding(.top, .base)
.padding(.bottom, BPKSpacing.none)
.background(.surfaceDefaultColor)
.accessibilityAddTraits(.isModal)
}
func makeNavigationBar(
title: String,
closeAccessibilityLabel: String,
onClose: @escaping () -> Void
) -> some View {
ZStack {
HStack {
BPKIconView(.close, size: .large)
.onTapGesture(perform: onClose)
.accessibilityHidden(false)
.accessibilityRemoveTraits(.isImage)
.accessibilityAddTraits(.isButton)
.accessibilityLabel(closeAccessibilityLabel)
Spacer()
}
BPKText(title, style: .heading5)
.padding(.vertical, .sm)
.accessibilityAddTraits(.isHeader)
}
.padding(.vertical, .md)
}
public func inputState(_ state: TextFieldState) -> BPKAppSearchModal {
var result = self
result.textFieldState = state
return result
}
private func onScroll(_ offset: CGPoint) {
inputFieldIsFocussed = false
}
}
extension BPKAppSearchModalResults {
var showTextField: Bool {
switch self {
case .loading, .content: return true
case .error: return false
}
}
}
struct BPKAppSearchModal_Previews: PreviewProvider {
static var previews: some View {
BPKAppSearchModal(
title: "Search Modal",
inputText: .constant(""),
inputHint: "Search",
results: .content(.init(
sections: (0..<3).map(buildSection),
shortcuts: (0..<4).map(buildShortcut)
)),
closeAccessibilityLabel: "Close",
inputPrefix: .icon(.search),
onClose: { }
)
.previewDisplayName("Content")
BPKAppSearchModal(
title: "Search Modal",
inputText: .constant("Text"),
inputHint: "Search",
results: .loading(.init(accessibilityLabel: "Loading")),
closeAccessibilityLabel: "Close",
inputPrefix: .text("From"),
onClose: { }
)
.previewDisplayName("Loading")
BPKAppSearchModal(
title: "Search Modal",
inputText: .constant(""),
inputHint: "Search",
results: .error( .init(
title: "Title",
description: "This is the subtitle",
action: .init( text: "Title for button", onActionSelected: { }),
image: Image(systemName: "photo")
)),
closeAccessibilityLabel: "Close",
onClose: { }
)
.previewDisplayName("Error")
}
static func buildSection(with index: Int) -> BPKAppSearchModalContent.Section {
return .init(
heading: .init(title: "Section \(index + 1)", action: .init(text: "Action", onActionSelected: { })),
items: (0..<1).map(buildItem)
)
}
static func buildItem(with index: Int) -> BPKAppSearchModalContent.Item {
return .init(
title: "Item No.\(index + 1)",
subtitle: "This is item No.\(index + 1)",
tertiaryLabel: "City",
icon: .recentSearches,
onItemSelected: {}
)
}
static func buildShortcut(with index: Int) -> BPKAppSearchModalContent.Shortcut {
return .init(text: "Shortcut \(index + 1)", icon: .landmark, onShortcutSelected: { })
}
}