NetNewsWire/Frameworks/Account/Feedly/FeedlyOperation.swift

69 lines
1.4 KiB
Swift

//
// FeedlyOperation.swift
// Account
//
// Created by Kiel Gillard on 20/9/19.
// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
//
import Foundation
protocol FeedlyOperationDelegate: class {
func feedlyOperation(_ operation: FeedlyOperation, didFailWith error: Error)
}
/// Abstract class common to all the tasks required to ingest content from Feedly into NetNewsWire.
/// Each task should try to have a single responsibility so they can be easily composed with others.
class FeedlyOperation: Operation {
weak var delegate: FeedlyOperationDelegate?
func didFinish() {
self.isExecutingOperation = false
self.isFinishedOperation = true
}
func didFinish(_ error: Error) {
assert(delegate != nil)
delegate?.feedlyOperation(self, didFailWith: error)
didFinish()
}
override func start() {
isExecutingOperation = true
DispatchQueue.main.async {
self.main()
}
}
override func cancel() {
super.cancel()
}
override var isExecuting: Bool {
return isExecutingOperation
}
var isExecutingOperation = false {
willSet {
willChangeValue(for: \.isExecuting)
}
didSet {
didChangeValue(for: \.isExecuting)
}
}
override var isFinished: Bool {
return isFinishedOperation
}
private var isFinishedOperation = false {
willSet {
willChangeValue(for: \.isFinished)
}
didSet {
didChangeValue(for: \.isFinished)
}
}
}