Bugfixing and Refactoring

Demo/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,38 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Demo/Base.lproj/LaunchScreen.storyboard

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="8076" systemVersion="14D121" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8063"/>
+        <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
+                        <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="  Copyright © 2015 Advanced Operation. All rights reserved." textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" minimumFontSize="9" translatesAutoresizingMaskIntoConstraints="NO" id="obG-Y5-kRd">
+                                <rect key="frame" x="20" y="559" width="560" height="21"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="17"/>
+                                <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Demo" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="GJd-Yh-RWb">
+                                <rect key="frame" x="20" y="180" width="560" height="43"/>
+                                <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
+                                <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="calibratedRGB"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                        </subviews>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                        <constraints>
+                            <constraint firstAttribute="centerX" secondItem="obG-Y5-kRd" secondAttribute="centerX" id="5cz-MP-9tL"/>
+                            <constraint firstAttribute="centerX" secondItem="GJd-Yh-RWb" secondAttribute="centerX" id="Q3B-4B-g5h"/>
+                            <constraint firstItem="obG-Y5-kRd" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leading" constant="20" symbolic="YES" id="SfN-ll-jLj"/>
+                            <constraint firstAttribute="bottom" secondItem="obG-Y5-kRd" secondAttribute="bottom" constant="20" id="Y44-ml-fuU"/>
+                            <constraint firstItem="GJd-Yh-RWb" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="bottom" multiplier="1/3" constant="1" id="moa-c2-u7t"/>
+                            <constraint firstItem="GJd-Yh-RWb" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leading" constant="20" symbolic="YES" id="x7j-FC-K8j"/>
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

Demo/Base.lproj/Main.storyboard

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="8121.20" systemVersion="14E46" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="QAj-Jn-gO0">
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="8101.16"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="A4x-ux-wzS">
+            <objects>
+                <tableViewController id="djY-HX-be3" customClass="ViewController" customModule="Demo" customModuleProvider="target" sceneMemberID="viewController">
+                    <tableView key="view" clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="22" sectionFooterHeight="22" id="rcX-Sx-qcZ">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                        <prototypes>
+                            <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" reuseIdentifier="Cell" id="PXE-i2-Ei8">
+                                <rect key="frame" x="0.0" y="86" width="600" height="44"/>
+                                <autoresizingMask key="autoresizingMask"/>
+                                <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="PXE-i2-Ei8" id="0ko-qR-sHG">
+                                    <rect key="frame" x="0.0" y="0.0" width="600" height="43.5"/>
+                                    <autoresizingMask key="autoresizingMask"/>
+                                </tableViewCellContentView>
+                            </tableViewCell>
+                        </prototypes>
+                        <connections>
+                            <outlet property="dataSource" destination="djY-HX-be3" id="A5D-GP-zL5"/>
+                            <outlet property="delegate" destination="djY-HX-be3" id="qmE-g0-P8r"/>
+                        </connections>
+                    </tableView>
+                    <navigationItem key="navigationItem" id="ppX-J8-DRL">
+                        <barButtonItem key="rightBarButtonItem" title="Start" id="vvd-et-5dp">
+                            <connections>
+                                <action selector="startAction:" destination="djY-HX-be3" id="Jyu-La-aOJ"/>
+                            </connections>
+                        </barButtonItem>
+                    </navigationItem>
+                </tableViewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Ddn-se-DqH" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="1187" y="334"/>
+        </scene>
+        <!--Navigation Controller-->
+        <scene sceneID="v3F-Zp-V2C">
+            <objects>
+                <navigationController automaticallyAdjustsScrollViewInsets="NO" id="QAj-Jn-gO0" sceneMemberID="viewController">
+                    <toolbarItems/>
+                    <navigationBar key="navigationBar" contentMode="scaleToFill" id="wJY-4v-RgA">
+                        <rect key="frame" x="0.0" y="0.0" width="320" height="44"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </navigationBar>
+                    <nil name="viewControllers"/>
+                    <connections>
+                        <segue destination="djY-HX-be3" kind="relationship" relationship="rootViewController" id="wSH-6y-0Iv"/>
+                    </connections>
+                </navigationController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="AGj-78-lev" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="375" y="334"/>
+        </scene>
+    </scenes>
+</document>

Demo/Classes/AppDelegate.swift

@@ -0,0 +1,22 @@
+//
+//  AppDelegate.swift
+//  Demo
+//
+//  Created by Phillipp (LMIS) on 07/07/15.
+//  Copyright © 2015 Advanced Operation. All rights reserved.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+    var window: UIWindow?
+
+    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject:AnyObject]?) -> Bool {
+        // Override point for customization after application launch.
+        return true
+    }
+
+}
+

Demo/Classes/Operations/HTTPBinNetworkOperation.swift

@@ -0,0 +1,113 @@
+//
+// Created by Phillipp (LMIS) on 07/07/15.
+// Copyright (c) 2015 Advanced Operation. All rights reserved.
+//
+
+import Foundation
+import ADVOperation
+
+
+final class HTTPBinNetworkOperation: GroupOperation {
+
+    let cacheFile:NSURL
+
+    init(cacheFile:NSURL) {
+
+        self.cacheFile = cacheFile
+
+        super.init(operations: [])
+        self.name = "HTTPBin Operation"
+
+        let url = NSURL(string: "http://httpbin.org/image/png")!
+        let session = NSURLSession.sharedSession()
+
+        let task = session.downloadTaskWithURL(url) {
+            url, response, error in
+            self.downloadFinished(url, response: response as? NSHTTPURLResponse, error: error)
+        }
+
+        if let task = task {
+            let taskOperation = URLSessionTaskOperation(task: task)
+
+            let reachabilityCondition = ReachabilityCondition(host: url)
+            taskOperation.addCondition(reachabilityCondition)
+
+            let networkObserver = NetworkObserver()
+            taskOperation.addObserver(networkObserver)
+
+            addOperation(taskOperation)
+        }
+
+    }
+
+    private func downloadFinished(url: NSURL?, response: NSHTTPURLResponse?, error: NSError?) {
+
+        if let error = error {
+            print("download failed \(error)")
+        } else {
+            print("download succeeded")
+        }
+
+        if let localURL = url {
+            do {
+                /*
+                If we already have a file at this location, just delete it.
+                Also, swallow the error, because we don't really care about it.
+                */
+                try NSFileManager.defaultManager().removeItemAtURL(cacheFile)
+            }
+            catch {
+            }
+
+            do {
+                try NSFileManager.defaultManager().moveItemAtURL(localURL, toURL: cacheFile)
+                print("data successfully moved to \(cacheFile.absoluteString)")
+            }
+            catch let error as NSError {
+                aggregateError(error)
+            }
+
+        } else if let error = error {
+            aggregateError(error)
+        } else {
+            // Do nothing, and the operation will automatically finish.
+        }
+
+
+    }
+
+    override func finished(errors: [NSError]) {
+        guard let firstError = errors.first where userInitiated else { return }
+
+        /*
+        We failed to load the model on a user initiated operation try and present
+        an error.
+        */
+
+        let alert = AlertOperation()
+
+        alert.title = "Unable to load download image"
+
+        alert.message = "An error occurred while downloading image. \(firstError.localizedDescription). Please try again later."
+
+        // No custom action for this button.
+        alert.addAction("Retry Later", style: .Cancel)
+
+        /*
+        For this operation, the `loadHandler` is only ever invoked if there are
+        no errors, so if we get to this point we know that it was not executed.
+        This means that we can offer to the user to try loading the model again,
+        simply by creating a new copy of the operation and giving it the same
+        loadHandler.
+        */
+        alert.addAction("Retry Now") { alertOperation in
+            let retryOperation = HTTPBinNetworkOperation(cacheFile:self.cacheFile)
+            retryOperation.userInitiated = true
+            alertOperation.produceOperation(retryOperation)
+        }
+
+        produceOperation(alert)
+    }
+
+
+}

Demo/Classes/ViewControllers/ViewController.swift

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+//
+//  ViewController.swift
+//  Demo
+//
+//  Created by Phillipp on 07/07/15.
+//  Copyright © 2015 Advanced Operation. All rights reserved.
+//
+
+import UIKit
+import ADVOperation
+
+class ViewController: UITableViewController, OperationQueueDelegate {
+
+    let operationQueue = OperationQueue()
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        // Do any additional setup after loading the view, typically from a nib.
+
+//        self.operationQueue.delegate = self
+    }
+
+    // MARK: Actions
+
+    @IBAction func startAction(sender: UIBarButtonItem) {
+
+        do {
+            let cachesFolder = try NSFileManager.defaultManager().URLForDirectory(.CachesDirectory, inDomain: .UserDomainMask, appropriateForURL: nil, create: true)
+            let cacheFile = cachesFolder.URLByAppendingPathComponent("image.png")
+
+            let networkOperation = HTTPBinNetworkOperation(cacheFile: cacheFile)
+            networkOperation.userInitiated = true
+            self.operationQueue.addOperation(networkOperation)
+
+        } catch let error as NSError {
+            print("error getting caches folder \(error)")
+        }
+
+    }
+
+
+    // MARK: UITableViewDataSource
+
+    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        return self.operationQueue.operationCount
+    }
+
+    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
+        let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath:indexPath)
+        let operation = self.operationQueue.operations[indexPath.item]
+        let operationName = operation.name ?? "no name"
+        cell.textLabel?.text = "Name: \(operationName) - State: \(operation.ready)"
+
+        return cell
+    }
+
+    // MARK: OperationQueue Delegate
+
+    func operationQueue(operationQueue: OperationQueue, willAddOperation operation: NSOperation) {
+        print("OperationCount: \(operationQueue.operationCount)")
+        NSOperationQueue.mainQueue().addOperationWithBlock {
+            self.tableView.reloadData()
+        }
+    }
+
+    func operationQueue(operationQueue: OperationQueue, operationDidFinish operation: NSOperation, withErrors errors: [NSError]) {
+        print("OperationCount: \(operationQueue.operationCount)")
+        NSOperationQueue.mainQueue().addOperationWithBlock {
+            self.tableView.reloadData()
+        }
+    }
+
+
+
+}
+