mirror of
https://github.com/Instagram/IGListKit
synced 2026-04-25 15:37:38 +00:00
f7220b5cfe
Summary: Used migration tool with Swift 4, fixed build errors, and killed all warnings. Only non-trivial change was in the macOS example. Will flag that one. No changelog needed for this, right? - [x] All tests pass. Demo project builds and runs. Closes https://github.com/Instagram/IGListKit/pull/941 Differential Revision: D5890505 Pulled By: rnystrom fbshipit-source-id: 7e0d3510ff0e5856a0ffd59f1a97548a72266c20
37 lines
1.2 KiB
Swift
37 lines
1.2 KiB
Swift
/**
|
|
Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
|
|
|
|
The examples provided by Facebook are for non-commercial testing and evaluation
|
|
purposes only. Facebook reserves all rights not expressly granted.
|
|
|
|
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
|
|
FACEBOOK 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 UIKit
|
|
|
|
@objc protocol IncrementListener: class {
|
|
func didIncrement(announcer: IncrementAnnouncer, value: Int)
|
|
}
|
|
|
|
final class IncrementAnnouncer: NSObject {
|
|
|
|
private var value: Int = 0
|
|
private let map: NSHashTable<IncrementListener> = NSHashTable<IncrementListener>.weakObjects()
|
|
|
|
func addListener(listener: IncrementListener) {
|
|
map.add(listener)
|
|
}
|
|
|
|
func increment() {
|
|
value += 1
|
|
for listener in map.allObjects {
|
|
listener.didIncrement(announcer: self, value: value)
|
|
}
|
|
}
|
|
|
|
}
|