From 96413bd04dfc4e1e41c71446ebd6338d865b7f11 Mon Sep 17 00:00:00 2001
From: luki <lukasz.g150@gmail.com>
Date: Sat, 9 Jul 2022 14:46:03 +0200
Subject: [PATCH] fix dlete menu from widget tree

---
 example/pubspec.lock        | 23 ++++++++---------------
 lib/src/side_menu_item.dart | 21 +++++++++++++++------
 pubspec.lock                | 23 ++++++++---------------
 3 files changed, 31 insertions(+), 36 deletions(-)

diff --git a/example/pubspec.lock b/example/pubspec.lock
index c99e639..1d9f0d0 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -49,7 +49,7 @@ packages:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0"
+    version: "1.16.0"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -70,7 +70,7 @@ packages:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -108,7 +108,7 @@ packages:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.3"
+    version: "0.1.4"
   meta:
     dependency: transitive
     description:
@@ -122,7 +122,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0"
+    version: "1.8.1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -134,7 +134,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.2"
   stack_trace:
     dependency: transitive
     description:
@@ -169,21 +169,14 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.8"
-  typed_data:
-    dependency: transitive
-    description:
-      name: typed_data
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.3.0"
+    version: "0.4.9"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
 sdks:
-  dart: ">=2.14.0 <3.0.0"
+  dart: ">=2.17.0-0 <3.0.0"
   flutter: ">=1.17.0"
diff --git a/lib/src/side_menu_item.dart b/lib/src/side_menu_item.dart
index dccb498..b5485c5 100644
--- a/lib/src/side_menu_item.dart
+++ b/lib/src/side_menu_item.dart
@@ -49,25 +49,34 @@ class _SideMenuItemState extends State<SideMenuItem> {
   double currentPage = 0;
   bool isHovered = false;
 
+  void _handleChange() {
+    setState(() {
+      currentPage = Global.controller.page!;
+    });
+  }
+
   @override
   void initState() {
     super.initState();
-    _nonNullableWrap(WidgetsBinding.instance)!.addPostFrameCallback((timeStamp) {
+    _nonNullableWrap(WidgetsBinding.instance)!
+        .addPostFrameCallback((timeStamp) {
       // set initialPage
       setState(() {
         currentPage = Global.controller.initialPage.toDouble();
       });
       if (mounted) {
         // set controller SideMenuItem page controller callback
-        Global.controller.addListener(() {
-          setState(() {
-            currentPage = Global.controller.page!;
-          });
-        });
+        Global.controller.addListener(_handleChange);
       }
     });
   }
 
+  @override
+  void dispose() {
+    Global.controller.removeListener(_handleChange);
+    super.dispose();
+  }
+
   /// This allows a value of type T or T?
   /// to be treated as a value of type T?.
   ///
diff --git a/pubspec.lock b/pubspec.lock
index 185e750..f4bed96 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -49,14 +49,14 @@ packages:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0"
+    version: "1.16.0"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -94,7 +94,7 @@ packages:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.3"
+    version: "0.1.4"
   meta:
     dependency: transitive
     description:
@@ -108,7 +108,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0"
+    version: "1.8.1"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -120,7 +120,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.2"
   stack_trace:
     dependency: transitive
     description:
@@ -155,21 +155,14 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.8"
-  typed_data:
-    dependency: transitive
-    description:
-      name: typed_data
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.3.0"
+    version: "0.4.9"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
 sdks:
-  dart: ">=2.14.0 <3.0.0"
+  dart: ">=2.17.0-0 <3.0.0"
   flutter: ">=1.17.0"