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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| // | ||
| // Timings.swift | ||
| // rem | ||
| // | ||
| // Created by Jason McGhee on 12/30/23. | ||
| // | ||
|
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| import Foundation | ||
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| class Debouncer { | ||
| private var lastFireTime: DispatchTime = .now() | ||
| private var delay: TimeInterval | ||
| private var workItem: DispatchWorkItem? | ||
|
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| init(delay: TimeInterval) { | ||
| self.delay = delay | ||
| } | ||
|
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| func debounce(action: @escaping () -> Void) { | ||
| workItem?.cancel() | ||
| workItem = DispatchWorkItem { action() } | ||
| let deadline = lastFireTime + delay | ||
| DispatchQueue.main.asyncAfter(deadline: deadline, execute: workItem!) | ||
| lastFireTime = deadline | ||
| } | ||
| } | ||
|
|
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| class Throttler { | ||
| private var lastExecution: Date = Date.distantPast | ||
| private let delay: TimeInterval | ||
| private var workItem: DispatchWorkItem? | ||
| private let queue: DispatchQueue | ||
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| init(delay: TimeInterval, queue: DispatchQueue = DispatchQueue.main) { | ||
| self.delay = delay | ||
| self.queue = queue | ||
| } | ||
|
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| func throttle(_ block: @escaping () -> Void) { | ||
| workItem?.cancel() | ||
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| let now = Date() | ||
| let deadline = lastExecution.addingTimeInterval(delay) | ||
| if now >= deadline { | ||
| lastExecution = now | ||
| block() | ||
| } else { | ||
| workItem = DispatchWorkItem { | ||
| self.lastExecution = Date() | ||
| block() | ||
| } | ||
| let dispatchDelay = DispatchTimeInterval.milliseconds(Int((deadline.timeIntervalSince(now)) * 1000)) | ||
| queue.asyncAfter(deadline: .now() + dispatchDelay, execute: workItem!) | ||
| } | ||
| } | ||
| } |