UITableView+CATransaction

UITableView+CATransaction.swift

//
//  UITableView+CATransaction.swift
//
//  Created by Marcel Dierkes on 08.05.15.
//  Copyright (c) 2015 Marcel Dierkes. All rights reserved.
//

import UIKit
import QuartzCore

public extension UITableView {
    
    /**
    Animates multiple insert, delete, reload, and move operations as a group.
    
    Source: http://stackoverflow.com/a/12516056
    
    - parameter updates: The block that performs the relevant insert, delete, reload, or move operations.
    - parameter completion: A completion handler block to execute when all of the operations are finished. This block takes a single Boolean parameter that contains the value `YES` if all of the related animations completed successfully or `NO` if they were interrupted. This parameter may be `nil`.
    */
    func performBatchUpdates(updates: (() -> Void)?, completion: ((finished: Bool) -> Void)?) {
        CATransaction.begin()
        CATransaction.setCompletionBlock {
            completion?(finished: true)
        }
        
        self.beginUpdates()
        updates?()
        self.endUpdates()
        
        CATransaction.commit()
    }
}