Line data    Source code

       1              : import 'dart:async';
       2              : import 'package:flutter/foundation.dart';
       3              : import '../debouncer_config.dart';
       4              : import 'debounce_strategy.dart';
       5              : 
       6              : /// Fires the action once, after [DebouncerConfig.delay] has passed
       7              : /// since the **last** call.
       8              : ///
       9              : /// This is the default debounce behaviour — ideal for search fields,
      10              : /// form validation, and resize handlers where you only care about
      11              : /// the final value after the user stops typing.
      12              : ///
      13              : /// Timeline:
      14              : /// ```
      15              : /// calls:  --A--B--C-----------
      16              : /// fires:  -------------------C
      17              : /// ```
      18              : class TrailingEdgeStrategy extends DebouncerStrategy {
      19            6 :   const TrailingEdgeStrategy();
      20              : 
      21            2 :   @override
      22              :   void execute(
      23              :       VoidCallback action,
      24              :       DebouncerConfig config,
      25              :       Timer? currentTimer,
      26              :       void Function(Timer?) updateTimer,
      27              :       ) {
      28            2 :     currentTimer?.cancel();
      29            6 :     updateTimer(Timer(config.delay, action));
      30              :   }
      31              : }