threema-ios/Threema/UI/ViewControllers/MediaPreview/MediaPreviewCarouselContainerView.swift

//  _____ _
// |_   _| |_  _ _ ___ ___ _ __  __ _
//   | | | ' \| '_/ -_) -_) '  \/ _` |_
//   |_| |_||_|_| \___\___|_|_|_\__,_(_)
//
// Threema iOS Client
// Copyright (c) 2020 Threema GmbH
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License, version 3,
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.

import UIKit

class MediaPreviewCarouselContainerView : UIView {
    var carouselAccessibilityElement : MediaPreviewCarouselAccessibilityElement?
    var delegate : MediaPreviewViewController?
    var currentImage : MediaPreviewItem?
    var index = 0
    
    override var accessibilityElements: [Any]? {
        get {
            var carAccessibilityElements : [Any]
            
            let carAccessibilityElement : MediaPreviewCarouselAccessibilityElement
            if let theCarouselAccessibilityElement = self.carouselAccessibilityElement {
                carAccessibilityElement = theCarouselAccessibilityElement
            } else {
                carAccessibilityElement = MediaPreviewCarouselAccessibilityElement(accessibilityContainer: self, currentMediaItem: self.delegate?.getCurrentlyVisibleItem())
                index+=1
                
                carAccessibilityElement.accessibilityFrameInContainerSpace = self.frame
            }
            
            carAccessibilityElements = [carAccessibilityElement]
            self.carouselAccessibilityElement = carAccessibilityElement
            
            return carAccessibilityElements
        }
        set { }
    }
}