[Pr Required (急需提交)] Modify the Structs to Conform OptionSet Protocol (修改一些结构体以遵从OptionSet协议)

[haren724]

Now I have some trouble with Filter Result ViewModel. The classes like
现在我在Filter Result ViewModel上遇到了一些问题。比如这种class

class FRWidescreenResolution<ObjectType>: FilterResultsModel where ObjectType: ObservableObject {
    weak var parent: ObjectType?
    
    required init() {}
    
    @AppStorage("StandardDefinition") public var standardDefinition = true
    @AppStorage("1280x720") public var resolution1280x720 = true
    @AppStorage("1920x1080-FullHD") public var resolution1920x1080 = true
    @AppStorage("2560x1440") public var resolution2560x1440 = true
    @AppStorage("3840x2160-4K") public var resolution3840x2160 = true
}

need to be converted into
需要被转换成

struct FRWidescreenResolution: OptionSet {
    let rawValue: Int
    
    static let allOptions = [
        "StandardDefinition",
        "1280x720",
        "Mature",
        "1920x1080-FullHD",
        "2560x1440",
        "3840x2160-4K"
    ]
    
    static let standardDefinition   = Self.init(rawValue: 1 << 0)
    static let resolution1280x720   = Self.init(rawValue: 1 << 1)
    static let resolution1920x1080  = Self.init(rawValue: 1 << 2)
    static let resolution2560x1440  = Self.init(rawValue: 1 << 3)
    static let resolution3840x2160  = Self.init(rawValue: 1 << 4)
    
    static let all: Self            = [.standardDefinition, resolution1280x720, resolution1920x1080, .resolution2560x1440, .resolution3840x2160]
    static let none: Self           = []
}

And then it comes to UI code. Make a full use of the allOptions created above to the ForEach
然后，对于UI代码的更改，充分利用上面创建的“allOptions”到“ForEach”

ForEach(Array(zip(FRWidescreenResolution.allOptions.indices, FRWidescreenResolution.allOptions)), id: \.0) { (i, option) in
    Toggle(option, isOn: Binding<Bool>(get: {
        viewModel.widescreenResolution.contains(FRWidescreenResolution(rawValue: 1 << i))
    }, set: {
        if $0 {
            viewModel.widescreenResolution.insert(FRWidescreenResolution(rawValue: 1 << i))
        } else {
            viewModel.widescreenResolution.remove(FRWidescreenResolution(rawValue: 1 << i))
        }
        print(String(describing: viewModel.widescreenResolution))
    }))
}

Last. The declaration of struct's variable needs to be modified. And because there's no methods in newly created struct anymore, so the .reset() call should be changed into = .all
最后一点，需要修改一下结构体变量的声明方法。而且因为新创建的结构体中不再有内部方法，所以.reset()调用应该更改为= .all

class FilterResultsViewModel: ObservableObject {
    // ... some codes
    @AppStorage("FRWidescreenResolution") public var widescreenResolution = FRWidescreenResolution.all
    // ... some codes
    public func reset() {
        // ... some codes
        self.widescreenResolution = .all
        // ... some codes
    }
}