/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    View controller for the Squire tab. Examples of high-level Force Touch API. Uses Force Touch and spring loaded buttons.

*/

import Cocoa

class SquireViewController: NSViewController {

    // MARK: Properties

    @IBOutlet weak var nextPhotoButton: NSButton!

    @IBOutlet weak var imageView: NSImageView!

    @IBOutlet weak var pressureIndicator: NSLevelIndicator!

    @IBOutlet weak var levelIndicator: NSLevelIndicator!

    static let imageBaseName = "Lola"

    static let maxPhotoIndex = 4

    var photoIndex = 1

    // MARK: View Controller

    override func viewDidLoad() {

        super.viewDidLoad()

        /*

            This is how you manually set a continuous accelerator button.

            The other buttons are set in the IB Attributes Inspector for that button.

        */

        nextPhotoButton.setButtonType(.accelerator)

        nextPhotoButton.isContinuous = true

    }

    func nextPhotoName() -> String {

        photoIndex += 1

        if photoIndex > SquireViewController.maxPhotoIndex {

            photoIndex = 1

        }

        return "\(SquireViewController.imageBaseName)\(photoIndex)"

    }

    // MARK: IBActions

    @IBAction func nextPhotoAction(_ sender: NSButton) {

        var startFrame = imageView.frame

        let nextPhoto = NSImage(named: nextPhotoName())

        startFrame.origin.x = -startFrame.size.width

        let newImageView = NSImageView(frame: startFrame)

        newImageView.image = nextPhoto

        view.addSubview(newImageView)

        NSAnimationContext.runAnimationGroup({ context in

            context.duration = 0.1

            newImageView.animator().frame = self.imageView.frame

        }, completionHandler: {

            self.imageView.image = nextPhoto

            newImageView.removeFromSuperviewWithoutNeedingDisplay()

        })

    }

    @IBAction func acceleratorChanged(_ sender: NSButton) {

        if sender.doubleValue >= 1 {

            pressureIndicator.integerValue = Int((sender.doubleValue - 1.0) * 1000.0)

        }

        else {

            pressureIndicator.integerValue = 0

        }

    }

    @IBAction func multiLevelAcceleratorChanged(_ sender: NSButton) {

        levelIndicator.integerValue = sender.integerValue

    }

    @IBAction func beepAction(_ sender: NSButton) {

        NSBeep()

    }

}