From f4bc2e1d91ed32b9bcb23eff4ff4696147745d11 Mon Sep 17 00:00:00 2001
From: Fironn <shihomihashi@gmail.com>
Date: Thu, 20 Jun 2024 15:29:00 +0900
Subject: [PATCH 1/2] add onDrawerChanged event handler

---
 lib/src/helper/utils.dart |  4 ++++
 lib/src/slider.dart       | 42 ++++++++++++++++++++++++---------------
 2 files changed, 30 insertions(+), 16 deletions(-)

diff --git a/lib/src/helper/utils.dart b/lib/src/helper/utils.dart
index f8f870d..58a264e 100644
--- a/lib/src/helper/utils.dart
+++ b/lib/src/helper/utils.dart
@@ -2,6 +2,10 @@ import 'dart:ui';
 
 import 'package:flutter_slider_drawer/flutter_slider_drawer.dart';
 
+/// Signature for the callback that's called when a [DrawerController] is
+/// opened or closed.
+typedef DrawerCallback = void Function(bool isOpened);
+
 class Utils {
   ///
   /// This method get Offset base on [sliderOpen] type
diff --git a/lib/src/slider.dart b/lib/src/slider.dart
index 1ac125c..8fbdef8 100644
--- a/lib/src/slider.dart
+++ b/lib/src/slider.dart
@@ -92,20 +92,24 @@ class SliderDrawer extends StatefulWidget {
   ///
   final bool isCupertino;
 
-  const SliderDrawer(
-      {Key? key,
-      required this.slider,
-      required this.child,
-      this.isDraggable = true,
-      this.animationDuration = 400,
-      this.sliderOpenSize = 265,
-      this.splashColor = const Color(0xffffff),
-      this.sliderCloseSize = 0,
-      this.slideDirection = SlideDirection.LEFT_TO_RIGHT,
-      this.sliderBoxShadow,
-      this.appBar = const SliderAppBar(),
-      this.isCupertino = false})
-      : super(key: key);
+  /// Optional callback that is called when the [Scaffold.drawer] is opened or closed.
+  final DrawerCallback? onDrawerChanged;
+
+  const SliderDrawer({
+    Key? key,
+    required this.slider,
+    required this.child,
+    this.isDraggable = true,
+    this.animationDuration = 400,
+    this.sliderOpenSize = 265,
+    this.splashColor = const Color(0xffffff),
+    this.sliderCloseSize = 0,
+    this.slideDirection = SlideDirection.LEFT_TO_RIGHT,
+    this.sliderBoxShadow,
+    this.appBar = const SliderAppBar(),
+    this.isCupertino = false,
+    this.onDrawerChanged,
+  }) : super(key: key);
 
   @override
   SliderDrawerState createState() => SliderDrawerState();
@@ -146,8 +150,14 @@ class SliderDrawerState extends State<SliderDrawer>
     super.initState();
 
     _animationDrawerController = AnimationController(
-        vsync: this,
-        duration: Duration(milliseconds: widget.animationDuration));
+        vsync: this, duration: Duration(milliseconds: widget.animationDuration))
+      ..addStatusListener((status) {
+        if (status == AnimationStatus.completed) {
+          widget.onDrawerChanged!(true);
+        } else if (status == AnimationStatus.dismissed) {
+          widget.onDrawerChanged!(false);
+        }
+      });
 
     _animation =
         Tween<double>(begin: widget.sliderCloseSize, end: widget.sliderOpenSize)

From 06f1ecc52afad50e470ada6fd8619a57fdac8a12 Mon Sep 17 00:00:00 2001
From: Fironn <shihomihashi@gmail.com>
Date: Tue, 18 Mar 2025 12:06:08 +0900
Subject: [PATCH 2/2] use onDrawerChanged?.call();

---
 lib/src/slider.dart | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/src/slider.dart b/lib/src/slider.dart
index 8fbdef8..d72c180 100644
--- a/lib/src/slider.dart
+++ b/lib/src/slider.dart
@@ -153,9 +153,9 @@ class SliderDrawerState extends State<SliderDrawer>
         vsync: this, duration: Duration(milliseconds: widget.animationDuration))
       ..addStatusListener((status) {
         if (status == AnimationStatus.completed) {
-          widget.onDrawerChanged!(true);
+          widget.onDrawerChanged?.call(true);
         } else if (status == AnimationStatus.dismissed) {
-          widget.onDrawerChanged!(false);
+          widget.onDrawerChanged?.call(false);
         }
       });