mirror of
https://github.com/JohnEstropia/CoreStore.git
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174 lines
4.8 KiB
Swift
174 lines
4.8 KiB
Swift
//
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// LiveQuery.swift
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// CoreStore
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//
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// Copyright © 2018 John Rommel Estropia
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//
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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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//
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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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//
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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.
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//
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//#if canImport(SwiftUI) && canImport(Combine)
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//
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//import CoreData
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//import Combine
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//import SwiftUI
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//
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//
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//#warning("TODO: autoupdating doesn't work yet")
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//@available(iOS 13.0, tvOS 13.0, watchOS 6.0, macOS 10.15, *)
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//@propertyWrapper
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//public struct LiveQuery<Result: LiveResult>: DynamicProperty {
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//
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// // MARK: Public
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//
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// @Environment(\.dataStack)
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// public var dataStack: DataStack
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//
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// public typealias ObjectType = Result.ObjectType
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//
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//
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// // MARK: @propertyWrapper
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//
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// public var wrappedValue: Result {
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//
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// get {
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//
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// return self.backingWrapper!.wrappedValue
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// }
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// set {
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//
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// self.backingWrapper!.wrappedValue = newValue
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// }
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// }
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//
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// public var projectedValue: ObservedObject<Result>.Wrapper {
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//
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// return self.backingWrapper!.projectedValue
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// }
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//
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//
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// // MARK: DynamicProperty
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//
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// public mutating func update() {
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//
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// SwiftUI.withAnimation {
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//
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// let dataStack = self.dataStack
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//
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// if self.backingWrapper == nil {
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//
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// self.backingWrapper = ObservedObject(wrappedValue: self.newLiveResult(dataStack))
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// }
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// else {
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//
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// self.backingWrapper!.wrappedValue = self.newLiveResult(dataStack)
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// }
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// self.backingWrapper!.update()
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// }
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// }
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//
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//
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// // MARK: FilePrivate
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//
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// fileprivate let newLiveResult: (DataStack) -> Result
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//
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// fileprivate init(newLiveResult: @escaping (DataStack) -> Result) {
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//
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// self.newLiveResult = newLiveResult
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// }
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//
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//
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// // MARK: Private
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//
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//// private var nonMutatingWrappedValue: LazyNonmutating<Result> = .init { fatalError() }
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//
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// private var currentDataStack: DataStack?
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// private var backingWrapper: ObservedObject<Result>?
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//
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// private mutating func set(dataStack: DataStack) -> Bool {
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//
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// guard self.currentDataStack != dataStack else {
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//
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// return false
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// }
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// self.currentDataStack = dataStack
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// if self.backingWrapper == nil {
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//
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// self.backingWrapper = ObservedObject(wrappedValue: self.newLiveResult(dataStack))
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// }
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// else {
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//
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// self.backingWrapper?.wrappedValue = self.newLiveResult(dataStack)
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// }
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// return true
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// }
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//
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//
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// // MARK: - LazyNonmutating
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//
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// fileprivate final class LazyNonmutating<Value> {
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//
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// // MARK: FilePrivate
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//
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// lazy var wrappedValue: Value = self.initializer()
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//
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// init(_ initializer: @escaping () -> Value) {
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//
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// self.initializer = initializer
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// }
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//
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//
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// // MARK: Private
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//
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// private var initializer: () -> Value
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// }
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//}
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//
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//
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//#if canImport(UIKit) || canImport(AppKit)
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//
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//@available(iOS 13.0, tvOS 13.0, watchOS 6.0, macOS 10.15, *)
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//extension LiveQuery {
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//
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// public init<D: DynamicObject>(liveList: LiveList<D>) where Result == LiveList<D> {
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//
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// self.init(
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// newLiveResult: { _ in liveList }
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// )
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// }
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//
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// public init<D: DynamicObject>(_ clauseChain: FetchChainBuilder<D>) where Result == LiveList<D> {
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//
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// self.init(
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// newLiveResult: { $0.liveList(clauseChain) }
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// )
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// }
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//
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// public init<D: DynamicObject>(_ clauseChain: SectionMonitorChainBuilder<D>) where Result == LiveList<D> {
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//
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// self.init(
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// newLiveResult: { $0.liveList(clauseChain) }
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// )
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// }
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//}
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//
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//#endif
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//
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//#endif
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