kplayer/kplayer/util/ImageLoadOperation.swift

//
// Created by Marco Schmickler on 21.03.15.
// Copyright (c) 2015 Marco Schmickler. All rights reserved.
//

import Foundation
import Alamofire
import Darwin

class ImageLoadOperation: NSOperation {
    internal typealias Succeeder = (UIImage) -> ()

    let imageURL: NSURL
    let succeeder: Succeeder
    let index: Int
    var request: Request?

    var manager: Manager?

    var ready1 = false


    init(imageURL: NSURL, succeeder: Succeeder, index: Int) {
        self.imageURL = imageURL
        self.succeeder = succeeder
        self.index = index
    }

    override func main() {
        if self.cancelled {
            return
        }

  //      println("do load \(imageURL.absoluteString!)")

        if let m = manager {
            request = m.request(.GET, imageURL)
        } else {
            request = Alamofire.request(.GET, imageURL)
        }

        request!.validate().response { (request, response, data, error) in
            if let e = error {
                print(e)
            }
            else if let d = data {
                self.succeeder(UIImage(data: d, scale: 1)!)
            }
        }

        while !ready1 {
            usleep(10000)
        }
    }

    override func cancel() {
//        println("cancel load \(imageURL.absoluteString!)")

        ready1 = true
        if let r = request {
            r.cancel()
        }

        super.cancel()
    }

}