:fix: update CHANGELOG.md (#225)

- Provide support for older versions of flutter as well.

Co-authored-by: Parth Baraiya <[email protected]>

Author: ParthBaraiya

.gitignore

@@ -60,4 +60,4 @@ ios/Frameworks/
 ios/Runner.xcworkspace/xcshareddata/
 example/ios/Flutter/flutter_export_environment.sh
 flutter_showcaseview.iml
-pubspec.lock
+pubspec.lock

CHANGELOG.md

@@ -3,6 +3,8 @@
 - Fixed [#62](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/62) - While using ShowCase widget, not scrolling to respective widget when its not visible.
 - Fixed [#131](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/131) - Support of other gestures onTargetLongPress and onTargetDoubleTap
 - Fixed [#140](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/140) - disableAnimation at ShowcaseWidget level
+- Fixed [#71](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/71) - Highlight Not working when widget is not visible on screen
+- Add flutter 3.0 support.
 
 ## [1.1.5] - March 4, 2022
 

example/.gitignore

@@ -79,4 +79,9 @@ windows/flutter/generated_plugins.cmake
 # Linux Project
 linux/flutter/generated_plugin_registrant.cc
 linux/flutter/generated_plugin_registrant.h
-linux/flutter/generated_plugins.cmake
+linux/flutter/generated_plugins.cmake
+
+# macOS Project
+macos/Flutter/ephemeral/Flutter-Generated.xcconfig
+macos/Flutter/ephemeral/flutter_export_environment.sh
+macos/Flutter/GeneratedPluginRegistrant.swift

lib/src/extension.dart

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2021 Simform Solutions
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+// TODO: remove this function if we remove support for flutter 2.x
+T? ambiguate<T>(T? object) => object;

lib/src/layout_overlays.dart

@@ -22,6 +22,7 @@
 
 import 'package:flutter/material.dart';
 
+import 'extension.dart';
 import 'showcase_widget.dart';
 
 /// Displays an overlay Widget anchored directly above the center of this
@@ -124,20 +125,23 @@ class _OverlayBuilderState extends State<OverlayBuilder> {
     super.initState();
 
     if (widget.showOverlay) {
-      WidgetsBinding.instance.addPostFrameCallback((_) => showOverlay());
+      ambiguate(WidgetsBinding.instance)
+          ?.addPostFrameCallback((_) => showOverlay());
     }
   }
 
   @override
   void didUpdateWidget(OverlayBuilder oldWidget) {
     super.didUpdateWidget(oldWidget);
-    WidgetsBinding.instance.addPostFrameCallback((_) => syncWidgetAndOverlay());
+    ambiguate(WidgetsBinding.instance)
+        ?.addPostFrameCallback((_) => syncWidgetAndOverlay());
   }
 
   @override
   void reassemble() {
     super.reassemble();
-    WidgetsBinding.instance.addPostFrameCallback((_) => syncWidgetAndOverlay());
+    ambiguate(WidgetsBinding.instance)
+        ?.addPostFrameCallback((_) => syncWidgetAndOverlay());
   }
 
   @override
@@ -193,8 +197,8 @@ class _OverlayBuilderState extends State<OverlayBuilder> {
   }
 
   void buildOverlay() async {
-    WidgetsBinding.instance
-        .addPostFrameCallback((_) => _overlayEntry?.markNeedsBuild());
+    ambiguate(WidgetsBinding.instance)
+        ?.addPostFrameCallback((_) => _overlayEntry?.markNeedsBuild());
   }
 
   @override

lib/src/measure_size.dart

@@ -23,6 +23,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
 
+import 'extension.dart';
+
 typedef OnWidgetSizeChange = void Function(Size? size);
 
 class MeasureSize extends StatefulWidget {
@@ -41,7 +43,8 @@ class MeasureSize extends StatefulWidget {
 class _MeasureSizeState extends State<MeasureSize> {
   @override
   Widget build(BuildContext context) {
-    SchedulerBinding.instance.addPostFrameCallback(postFrameCallback);
+    ambiguate(SchedulerBinding.instance)
+        ?.addPostFrameCallback(postFrameCallback);
     return Container(
       key: widgetKey,
       child: widget.child,

lib/src/showcase.dart

@@ -26,6 +26,7 @@ import 'dart:ui';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
+import 'extension.dart';
 import 'get_position.dart';
 import 'layout_overlays.dart';
 import 'shape_clipper.dart';
@@ -187,7 +188,7 @@ class _ShowcaseState extends State<Showcase> {
   }
 
   void _scrollIntoView() {
-    WidgetsBinding.instance.addPostFrameCallback((timeStamp) async {
+    ambiguate(WidgetsBinding.instance)?.addPostFrameCallback((timeStamp) async {
       setState(() {
         _isScrollRunning = true;
       });