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

   1 /*
   2  Copyright (C) 2024 Rubén Beltrán del Río
   3
   4  This program is free software: you can redistribute it and/or modify
   5  it under the terms of the GNU General Public License as published by
   6  the Free Software Foundation, either version 3 of the License, or
   7  (at your option) any later version.
   8
   9  This program is distributed in the hope that it will be useful,
  10  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  GNU General Public License for more details.
  13
  14  You should have received a copy of the GNU General Public License
  15  along with this program. If not, see https://map.tranquil.systems.
  16  */
  17 import Foundation
  18
  19 class Debouncer {
  20
  21   // MARK: - Properties
  22   private let queue = DispatchQueue.global(qos: .utility)
  23   private var workItem = DispatchWorkItem(block: {})
  24   private var interval: TimeInterval
  25
  26   // MARK: - Initializer
  27   init(seconds: TimeInterval) {
  28     self.interval = seconds
  29   }
  30
  31   // MARK: - Debouncing function
  32   func debounce(action: @escaping (() -> Void)) {
  33     workItem.cancel()
  34     workItem = DispatchWorkItem(block: { action() })
  35     queue.asyncAfter(deadline: .now() + interval, execute: workItem)
  36   }
  37 }