mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-24 09:48:21 +00:00
49bf24693d
Summary: Created a new demo that shows off how to: - Inject dependencies to section controllers - Objects shared between section controllers - Things that aren't the core "object" - Announce changes from the VC that make their way to the section controllers - Without calling updates Closes https://github.com/Instagram/IGListKit/pull/612 Differential Revision: D4827188 Pulled By: rnystrom fbshipit-source-id: 9575df0e105fd06f9a59db49432b19e8b824e0e3
38 lines
1.2 KiB
Swift
38 lines
1.2 KiB
Swift
/**
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Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
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The examples provided by Facebook are for non-commercial testing and evaluation
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purposes only. Facebook reserves all rights not expressly granted.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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import UIKit
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@objc
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protocol IncrementListener: class {
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func didIncrement(announcer: IncrementAnnouncer, value: Int)
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}
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final class IncrementAnnouncer: NSObject {
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private var value: Int = 0
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private let map: NSHashTable<IncrementListener> = NSHashTable<IncrementListener>.weakObjects()
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func addListener(listener: IncrementListener) {
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map.add(listener)
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}
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func increment() {
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value += 1
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for listener in map.allObjects {
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listener.didIncrement(announcer: self, value: value)
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}
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}
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}
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