// // AttachmentCell.swift // InputBarAccessoryView // // Copyright © 2017-2019 Nathan Tannar. // // 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. // // Created by Nathan Tannar on 10/4/17. // import UIKit open class AttachmentCell: UICollectionViewCell { // MARK: - Properties class var reuseIdentifier: String { return "AttachmentCell" } public let containerView: UIView = { let view = UIView() view.translatesAutoresizingMaskIntoConstraints = false view.backgroundColor = .groupTableViewBackground view.layer.cornerRadius = 8 view.clipsToBounds = true return view }() open var padding: UIEdgeInsets = UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5) { didSet { updateContainerPadding() } } open lazy var deleteButton: UIButton = { [weak self] in let button = UIButton() button.setAttributedTitle(NSMutableAttributedString().bold("X", fontSize: 15, textColor: .white), for: .normal) button.setAttributedTitle(NSMutableAttributedString().bold("X", fontSize: 15, textColor: UIColor.white.withAlphaComponent(0.5)), for: .highlighted) button.layer.cornerRadius = 10 button.clipsToBounds = true button.backgroundColor = UIColor(red: 0, green: 122/255, blue: 1, alpha: 1) button.addTarget(self, action: #selector(deleteAttachment), for: .touchUpInside) return button }() open var attachment: AttachmentManager.Attachment? open var indexPath: IndexPath? open weak var manager: AttachmentManager? private var containerViewLayoutSet: NSLayoutConstraintSet? // MARK: - Initialization public override init(frame: CGRect) { super.init(frame: frame) setup() } required public init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) setup() } open override func prepareForReuse() { super.prepareForReuse() indexPath = nil manager = nil attachment = nil } // MARK: - Setup private func setup() { setupSubviews() setupConstraints() } private func setupSubviews() { contentView.addSubview(containerView) contentView.addSubview(deleteButton) } private func setupConstraints() { containerViewLayoutSet = NSLayoutConstraintSet( top: containerView.topAnchor.constraint(equalTo: contentView.topAnchor, constant: padding.top), bottom: containerView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -padding.bottom), left: containerView.leftAnchor.constraint(equalTo: contentView.leftAnchor, constant: padding.left), right: containerView.rightAnchor.constraint(equalTo: contentView.rightAnchor, constant: -padding.right) ).activate() deleteButton.addConstraints(contentView.topAnchor, right: contentView.rightAnchor, widthConstant: 20, heightConstant: 20) } private func updateContainerPadding() { containerViewLayoutSet?.top?.constant = padding.top containerViewLayoutSet?.bottom?.constant = -padding.bottom containerViewLayoutSet?.left?.constant = padding.left containerViewLayoutSet?.right?.constant = -padding.right } // MARK: - User Actions @objc func deleteAttachment() { guard let index = indexPath?.row else { return } manager?.removeAttachment(at: index) } }