// CoachMarkArrowDefaultView.swift
//
// Copyright (c) 2015, 2016 Frédéric Maquin <fred@ephread.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

import UIKit

// MARK: - Default Class
/// A concrete implementation of the coach mark arrow view and the
/// default one provided by the library.
@available(iOS 9.0, *)
public class CoachMarkArrowDefaultView: UIImageView, CoachMarkArrowView {
    // MARK: - Initialization
    public init(orientation: CoachMarkArrowOrientation) {
        let image, highlightedImage: UIImage?

        if orientation == .top {
            image = UIImage(namedInInstructions: "arrow-top")
            highlightedImage = UIImage(namedInInstructions: "arrow-top-highlighted")
        } else {
            image = UIImage(namedInInstructions: "arrow-bottom")
            highlightedImage = UIImage(namedInInstructions: "arrow-bottom-highlighted")
        }

        super.init(image: image, highlightedImage: highlightedImage)

        initializeConstraints()
    }

    required public init?(coder aDecoder: NSCoder) {
        fatalError("This class does not support NSCoding.")
    }
}

// MARK: - Private Inner Setup
@available(iOS 9.0, *)
private extension CoachMarkArrowDefaultView {
    func initializeConstraints() {
        self.translatesAutoresizingMaskIntoConstraints = false
        self.widthAnchor.constraint(equalToConstant: self.image!.size.width).isActive = true
        self.heightAnchor.constraint(equalToConstant: self.image!.size.height).isActive = true
    }
}
