Initial public commit

lib/logic/common/throttler.dart

@@ -0,0 +1,35 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+class Throttler {
+  Throttler(this.interval);
+  final Duration interval;
+
+  VoidCallback? _action;
+  Timer? _timer;
+
+  void call(VoidCallback action, {bool immediateCall = true}) {
+    // Let the latest action override whatever was there before
+    _action = action;
+    // If no timer is running, we want to start one
+    if (_timer == null) {
+      //  If immediateCall is true, we handle the action now
+      if (immediateCall) {
+        _callAction();
+      }
+      // Start a timer that will temporarily throttle subsequent calls, and eventually make a call to whatever _action is (if anything)
+      _timer = Timer(interval, _callAction);
+    }
+  }
+
+  void _callAction() {
+    _action?.call(); // If we have an action queued up, complete it.
+    _timer = null;
+  }
+
+  void reset() {
+    _action = null;
+    _timer = null;
+  }
+}