CoreStore/Sources/Internal/NotificationObserver.swift

//
//  NotificationObserver.swift
//  CoreStore
//
//  Copyright © 2014 John Rommel Estropia
//
//  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 Foundation


// MARK: - NotificationObserver

internal final class NotificationObserver {
    
    // MARK: Public
    
    let notificationName: String
    let object: AnyObject?
    let observer: NSObjectProtocol
    
    init(notificationName: String, object: AnyObject?, closure: (note: NSNotification) -> Void) {
        
        self.notificationName = notificationName
        self.object = object
        self.observer = NSNotificationCenter.defaultCenter().addObserverForName(
            notificationName,
            object: object,
            queue: nil,
            usingBlock: closure
        )
    }
    
    deinit {
        
        NSNotificationCenter.defaultCenter().removeObserver(
            self.observer,
            name: self.notificationName,
            object: self.object
        )
    }
}