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Refine UIKit to SwiftUI Measurement Strategies (#162)
* Update UIKit from swiftUI measurement strategies * Add example code * Swiftlint and fixes * CI fixes * Updates for self review * Updates for PR feedback
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137 changes: 137 additions & 0 deletions
137
...e/EpoxyExample/ViewControllers/SwiftUI/EpoxyInSwiftUISizingStrategiesViewController.swift
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,137 @@ | ||
| // Created by Bryn Bodayle on 2/5/24. | ||
| // Copyright © 2024 Airbnb Inc. All rights reserved. | ||
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| import Epoxy | ||
| import SwiftUI | ||
| import UIKit | ||
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| // MARK: - EpoxyInSwiftUISizingStrategiesViewController | ||
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| /// Demo of the various sizing strategies for UIKit views bridged to SwiftUI | ||
| final class EpoxyInSwiftUISizingStrategiesViewController: UIHostingController<EpoxyInSwiftUISizingStrategiesView> { | ||
| init() { | ||
| super.init(rootView: EpoxyInSwiftUISizingStrategiesView()) | ||
| } | ||
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| required init?(coder _: NSCoder) { | ||
| fatalError("init(coder:) has not been implemented") | ||
| } | ||
| } | ||
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| // MARK: - EpoxyInSwiftUISizingStrategiesView | ||
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| struct EpoxyInSwiftUISizingStrategiesView: View { | ||
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| // MARK: Internal | ||
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| let text = "The text" | ||
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| var body: some View { | ||
| ScrollView { | ||
| LazyVStack(alignment: .leading, spacing: 12) { | ||
| Text("Word Count: \(wordCount)") | ||
| .padding() | ||
| Slider(value: $wordCount, in: 0...100) | ||
| .padding() | ||
| Text("Proposed Width/Height set to 150pt") | ||
| .padding() | ||
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| ForEach(SwiftUIMeasurementContainerStrategy.allCases) { value in | ||
| Text(value.displayString) | ||
| .bold() | ||
| .padding() | ||
| LabelView( | ||
| text: BeloIpsum.sentence(count: 1, wordCount: Int(wordCount)), | ||
| measurementStrategy: value) | ||
| .frame(width: value.proposedWidth, height: value.proposedHeight) | ||
| .border(.red) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| // MARK: Private | ||
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| @State private var wordCount = 12.0 | ||
| } | ||
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| // MARK: - SwiftUIMeasurementContainerStrategy + Identifiable, CaseIterable | ||
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| extension SwiftUIMeasurementContainerStrategy: Identifiable, CaseIterable { | ||
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| // MARK: Public | ||
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| public static var allCases: [SwiftUIMeasurementContainerStrategy] = [ | ||
| .automatic, | ||
| .proposed, | ||
| .intrinsicHeightProposedOrIntrinsicWidth, | ||
| .intrinsicHeightProposedWidth, | ||
| .intrinsicWidthProposedHeight, | ||
| .intrinsic, | ||
| ] | ||
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| public var id: Self { | ||
| self | ||
| } | ||
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| // MARK: Internal | ||
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| var displayString: String { | ||
| switch self { | ||
| case .automatic: | ||
| return "Automatic" | ||
| case .proposed: | ||
| return "Proposed" | ||
| case .intrinsicHeightProposedOrIntrinsicWidth: | ||
| return "Intrinsic Height, Proposed Width or Intrinsic Width" | ||
| case .intrinsicHeightProposedWidth: | ||
| return "Intrinsic Height, Proposed Width" | ||
| case .intrinsicWidthProposedHeight: | ||
| return "Intrinsic Width, Proposed Height" | ||
| case .intrinsic: | ||
| return "Intrinsic" | ||
| } | ||
| } | ||
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| var proposedWidth: CGFloat? { | ||
| switch self { | ||
| case .proposed, .intrinsicHeightProposedWidth: | ||
| return 150 | ||
| default: | ||
| return nil | ||
| } | ||
| } | ||
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| var proposedHeight: CGFloat? { | ||
| switch self { | ||
| case .proposed, .intrinsicWidthProposedHeight: | ||
| return 150 | ||
| default: | ||
| return nil | ||
| } | ||
| } | ||
| } | ||
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| // MARK: - LabelView | ||
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| struct LabelView: UIViewConfiguringSwiftUIView { | ||
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| let text: String? | ||
| let measurementStrategy: SwiftUIMeasurementContainerStrategy | ||
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| var configurations = [SwiftUIView<UILabel, Void>.Configuration]() | ||
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| var body: some View { | ||
| UILabel.swiftUIView { | ||
| let label = UILabel(frame: .zero) | ||
| label.numberOfLines = 0 | ||
| return label | ||
| } | ||
| .configure { context in | ||
| context.view.text = text | ||
| context.container.invalidateIntrinsicContentSize() | ||
| } | ||
| .configurations(configurations) | ||
| .sizing(measurementStrategy) | ||
| } | ||
| } |
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