git.r.bdr.sh - rbdr/map/blob - Map/Logic/Debouncer.swift

   1 // Copyright (C) 2024 Rubén Beltrán del Río
   2
   3 // This program is free software: you can redistribute it and/or modify
   4 // it under the terms of the GNU General Public License as published by
   5 // the Free Software Foundation, either version 3 of the License, or
   6 // (at your option) any later version.
   7
   8 // This program is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 // GNU General Public License for more details.
  12
  13 // You should have received a copy of the GNU General Public License
  14 // along with this program. If not, see https://map.tranquil.systems.
  15 import Foundation
  16
  17 class Debouncer {
  18
  19   // MARK: - Properties
  20   private let queue = DispatchQueue.global(qos: .utility)
  21   private var workItem = DispatchWorkItem(block: {})
  22   private var interval: TimeInterval
  23
  24   // MARK: - Initializer
  25   init(seconds: TimeInterval) {
  26     self.interval = seconds
  27   }
  28
  29   // MARK: - Debouncing function
  30   func debounce(action: @escaping (() -> Void)) {
  31     workItem.cancel()
  32     workItem = DispatchWorkItem(block: { action() })
  33     queue.asyncAfter(deadline: .now() + interval, execute: workItem)
  34   }
  35 }