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‎.gitattributes‎

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# Auto detect text files and perform LF normalization
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* text=auto

‎.gitignore‎

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# Xcode
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#
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# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
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## User settings
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xcuserdata/
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## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9)
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*.xcscmblueprint
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*.xccheckout
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## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4)
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build/
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DerivedData/
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*.moved-aside
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*.pbxuser
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!default.pbxuser
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*.mode1v3
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!default.mode1v3
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*.mode2v3
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!default.mode2v3
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*.perspectivev3
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!default.perspectivev3
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## Obj-C/Swift specific
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*.hmap
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## App packaging
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*.ipa
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*.dSYM.zip
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*.dSYM
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## Playgrounds
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timeline.xctimeline
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playground.xcworkspace
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# Swift Package Manager
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#
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# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
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# Packages/
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# Package.pins
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# Package.resolved
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# *.xcodeproj
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#
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# Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata
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# hence it is not needed unless you have added a package configuration file to your project
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# .swiftpm
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.build/
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# CocoaPods
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#
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# We recommend against adding the Pods directory to your .gitignore. However
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# you should judge for yourself, the pros and cons are mentioned at:
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# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
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#
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# Pods/
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#
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# Add this line if you want to avoid checking in source code from the Xcode workspace
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# *.xcworkspace
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# Carthage
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#
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# Add this line if you want to avoid checking in source code from Carthage dependencies.
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# Carthage/Checkouts
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Carthage/Build/
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# Accio dependency management
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Dependencies/
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.accio/
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# fastlane
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#
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# It is recommended to not store the screenshots in the git repo.
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# Instead, use fastlane to re-generate the screenshots whenever they are needed.
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# For more information about the recommended setup visit:
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# https://docs.fastlane.tools/best-practices/source-control/#source-control
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fastlane/report.xml
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fastlane/Preview.html
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fastlane/screenshots/**/*.png
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fastlane/test_output
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# Code Injection
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#
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# After new code Injection tools there's a generated folder /iOSInjectionProject
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# https://github.com/johnno1962/injectionforxcode
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iOSInjectionProject/

‎.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata‎

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‎.swiftpm/xcode/package.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>IDEDidComputeMac32BitWarning</key>
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<true/>
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</dict>
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</plist>

‎LICENSE‎

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MIT License
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Copyright (c) 2023 Mehmet Ateş 
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎Package.swift‎

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// swift-tools-version: 5.9
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// The swift-tools-version declares the minimum version of Swift required to build this package.
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import PackageDescription
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let package = Package(
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name: "ErrorableView",
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products: [
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// Products define the executables and libraries a package produces, making them visible to other packages.
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.library(
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name: "ErrorableView",
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targets: ["ErrorableView"]),
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],
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targets: [
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// Targets are the basic building blocks of a package, defining a module or a test suite.
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// Targets can depend on other targets in this package and products from dependencies.
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.target(
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name: "ErrorableView"),
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.testTarget(
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name: "ErrorableViewTests",
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dependencies: ["ErrorableView"]),
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]
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)

‎README.md‎

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# ErrorableView-SwiftUI
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‎Sources/ErrorableView/ErrorableViewModelProtocol.swift‎

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//
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// ErrorableViewModelProtocol.swift
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//
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//
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// Created by Mehmet Ateş on 26.08.2023.
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//
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import Combine
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@available(macOS 10.15, *)
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@available(iOS 13.0, *)
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public protocol ErrorableViewModelProtocol: AnyObject, ObservableObject {
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var state: PageStates { get set }
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func refresh()
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}

‎Sources/ErrorableView/ErrorableViewProtocol.swift‎

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//
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// ErrorableViewModelProtocol.swift
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//
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//
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// Created by Mehmet Ateş on 26.08.2023.
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//
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import SwiftUI
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@available(macOS 11.0, *)
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@available(iOS 14.0, *)
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public protocol ErrorableViewProtocol: View where ViewModel: ErrorableViewModelProtocol {
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associatedtype ViewModel
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associatedtype Content
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var viewModel: ViewModel { get set }
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}
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@available(macOS 11.0, *)
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@available(iOS 14.0, *)
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public extension ErrorableViewProtocol where Content == AnyView {
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func createErrorableView(
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@ViewBuilder loadingView: () -> Content,
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@ViewBuilder failureView: () -> Content,
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@ViewBuilder successfulView: () -> Content
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) -> Content {
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switch viewModel.state {
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case .loading:
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loadingView()
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case .successful:
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successfulView()
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case .failure:
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failureView()
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}
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}
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func createErrorableView(
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@ViewBuilder failureView: () -> Content,
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@ViewBuilder successfulView: () -> Content
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) -> Content {
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switch viewModel.state {
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case .loading:
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loadingState
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case .successful:
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successfulView()
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case .failure:
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failureView()
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}
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}
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func createErrorableView(
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errorTitle: LocalizedStringKey,
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errorSubTitle: LocalizedStringKey? = nil,
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errorIcon: String? = nil,
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errorSystemIcon: String? = nil,
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errorButtonTitle: LocalizedStringKey,
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@ViewBuilder successfulView: () -> Content
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) -> Content {
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switch viewModel.state {
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case .loading:
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loadingState
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case .successful:
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successfulView()
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case .failure:
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failuteState(errorTitle: errorTitle, errorSubTitle: errorSubTitle, errorIcon: errorIcon, errorSystemIcon: errorSystemIcon, errorButtonTitle: errorButtonTitle)
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}
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}
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private var loadingState: Content {
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AnyView(
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VStack {
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Spacer()
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ProgressView()
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.accentColor(.accentColor)
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Spacer()
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}
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)
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}
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private func failuteState(
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errorTitle: LocalizedStringKey,
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errorSubTitle: LocalizedStringKey?,
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errorIcon: String?,
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errorSystemIcon: String?,
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errorButtonTitle: LocalizedStringKey
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) -> Content {
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AnyView(
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VStack {
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Spacer()
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if let errorSystemIcon {
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Image(systemName: errorSystemIcon)
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.font(.system(size: 60))
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.foregroundColor(.red)
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}
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if let errorIcon {
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Image(errorIcon)
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}
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Text(errorTitle)
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.font(.title)
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.fontWeight(.bold)
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.multilineTextAlignment(.center)
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.padding(.top)
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if let errorSubTitle {
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Text(errorSubTitle)
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.font(.headline)
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.fontWeight(.bold)
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.foregroundColor(.secondary)
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.multilineTextAlignment(.center)
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}
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Spacer()
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Button {
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viewModel.refresh()
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} label: {
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Text(errorButtonTitle)
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.padding()
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.background(Color.red.opacity(0.3))
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}.accentColor(Color.red)
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.clipShape(Capsule())
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Spacer()
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}
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)
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}
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}
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@available(macOS 11.0, *)
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@available(iOS 15.0, *)
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private struct Example_Preview: PreviewProvider {
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static var previews: some View {
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Example()
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}
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}
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@available(macOS 11.0, *)
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@available(iOS 15.0, *)
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private struct Example: ErrorableViewProtocol {
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typealias Content = AnyView
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typealias ViewModel = ExampleViewModel
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@ObservedObject var viewModel: ExampleViewModel = ExampleViewModel()
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var body: some View {
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NavigationView {
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createErrorableView(errorTitle: "Upps!", errorSubTitle: "We encountered an error.\n Please try again later!", errorSystemIcon: "minus.diamond.fill", errorButtonTitle: "Try Again") {
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AnyView (
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ScrollView {
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ForEach(0..<100, id: \.self) { _ in
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AsyncImage(url: URL(string: "https://picsum.photos/200")) { phase in
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if let image = phase.image {
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image
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.resizable()
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.scaledToFill()
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} else {
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Color.gray
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}
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}.frame(width: 300, height: 200, alignment: .center)
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}
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}
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)
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}
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.navigationTitle("Example")
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}.onAppear {
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Task { @MainActor in
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DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
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viewModel.state = .failure
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}
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}
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}
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}
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}
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@available(macOS 11.0, *)
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@available(iOS 15.0, *)
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private final class ExampleViewModel: ErrorableViewModelProtocol {
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@Published var state: PageStates = .loading
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func refresh() {
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state = .successful
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}
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}

‎Sources/ErrorableView/PageStates.swift‎

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//
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// PageStates.swift
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//
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//
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// Created by Mehmet Ateş on 26.08.2023.
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//
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public enum PageStates {
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case loading
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case successful
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case failure
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}

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