deltachat-ios/Pods/InputBarAccessoryView/Sources/Plugins/AttachmentManager/Views/AttachmentsView.swift

//
//  AttachmentCollectionView.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

@available(*, deprecated, message: "AttachmentsView has been renamed to AttachmentCollectionView")
public typealias AttachmentsView = AttachmentCollectionView

open class AttachmentCollectionView: UICollectionView {
    
    // MARK: - Properties
    
    open var intrinsicContentHeight: CGFloat = 100 {
        didSet {
            invalidateIntrinsicContentSize()
        }
    }
    
    open override var intrinsicContentSize: CGSize {
        return CGSize(width: 0, height: intrinsicContentHeight)
    }
    
    // MARK: - Initialization
    
    public init() {
        let layout = UICollectionViewFlowLayout()
        layout.scrollDirection = .horizontal
        layout.minimumLineSpacing = 0
        layout.sectionInset.top = 5
        layout.sectionInset.bottom = 5
        layout.headerReferenceSize = CGSize(width: 12, height: 0)
        layout.footerReferenceSize = CGSize(width: 12, height: 0)
        super.init(frame: .zero, collectionViewLayout: layout)
        setup()
    }
    
    public override init(frame: CGRect, collectionViewLayout layout: UICollectionViewLayout) {
        super.init(frame: frame, collectionViewLayout: layout)
        setup()
    }
    
    required public init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setup()
    }
    
    // MARK: - Setup
    
    private func setup() {
        
        backgroundColor = .white
        alwaysBounceHorizontal = true
        showsHorizontalScrollIndicator = true
        setContentHuggingPriority(UILayoutPriority.defaultHigh, for: .vertical)
        register(AttachmentCell.self, forCellWithReuseIdentifier: AttachmentCell.reuseIdentifier)
        register(ImageAttachmentCell.self, forCellWithReuseIdentifier: ImageAttachmentCell.reuseIdentifier)
    }
}