added optional onErrorCallback to handle custom error

CHANGELOG.md

@@ -1,7 +1,7 @@
 ## 0.0.1
 
 * Initial Release
-* load text from assets/file 
+* load text from assets/file
 * search text by keyword
 
 ## 0.0.2
@@ -14,8 +14,12 @@
 
 ## 0.0.4
 * textStyle issue fixed
-* default focus color change to amber 
+* default focus color change to amber
 * refactor code
 
 ## 0.0.5
 * Updated readme md and github action
+
+## 0.0.6
+* documentation update
+* added onErrorCallback for handle error 

example/lib/main.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_text_viewer/flutter_text_viewer.dart';
 
@@ -45,6 +46,12 @@ class _HomePageState extends State<HomePage> {
                     highLightColor: Colors.yellow,
                     focusColor: Colors.orange,
                     ignoreCase: true,
+                    onErrorCallback: (error) {
+                      // show error in your UI
+                      if (kDebugMode) {
+                        print("Error: $error");
+                      }
+                    },
                   ),
                   showSearchAppBar: true,
                 );

example/pubspec.lock

@@ -7,7 +7,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.2"
+    version: "2.9.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -21,21 +21,14 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
-  charcode:
-    dependency: transitive
-    description:
-      name: charcode
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.3.1"
+    version: "1.2.1"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   collection:
     dependency: transitive
     description:
@@ -56,7 +49,7 @@ packages:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -80,7 +73,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.0.4"
+    version: "0.0.6"
   image_painter:
     dependency: "direct main"
     description:
@@ -101,28 +94,28 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.11"
+    version: "0.12.12"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.4"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0"
   path:
     dependency: transitive
     description:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.1"
+    version: "1.8.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -134,7 +127,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.2"
+    version: "1.9.0"
   stack_trace:
     dependency: transitive
     description:
@@ -155,21 +148,21 @@ packages:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.1"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.9"
+    version: "0.4.12"
   vector_math:
     dependency: transitive
     description:

lib/model/text_viewer.dart

@@ -1,5 +1,7 @@
 import 'package:flutter/material.dart';
 
+typedef OnErrorCallback = void Function(String error);
+
 class TextViewer {
   /// Provide the path of the file that need to load
   /// In this case you need to pass .txt file
@@ -36,10 +38,14 @@ class TextViewer {
   ///Search text case is sensitive or not
   final bool ignoreCase;
 
+  ///Search on error Callback
+  final OnErrorCallback? onErrorCallback;
+
   const TextViewer._({
     this.assetPath,
     this.filePath,
     this.textContent,
+    this.onErrorCallback,
     required this.textStyle,
     required this.focusTextStyle,
     required this.highLightTextStyle,
@@ -56,18 +62,19 @@ class TextViewer {
     Color highLightColor = Colors.yellow,
     Color focusColor = Colors.amber,
     bool ignoreCase = true,
+    OnErrorCallback? onErrorCallback,
   }) {
     return TextViewer._(
-      assetPath: assetPath,
-      textStyle: textStyle,
-      highLightTextStyle: highLightTextStyle ??
-          textStyle.copyWith(background: Paint()..color = highLightColor),
-      focusTextStyle: focusTextStyle ??
-          textStyle.copyWith(background: Paint()..color = focusColor),
-      highLightColor: highLightColor,
-      focusColor: focusColor,
-      ignoreCase: ignoreCase,
-    );
+        assetPath: assetPath,
+        textStyle: textStyle,
+        highLightTextStyle: highLightTextStyle ??
+            textStyle.copyWith(background: Paint()..color = highLightColor),
+        focusTextStyle: focusTextStyle ??
+            textStyle.copyWith(background: Paint()..color = focusColor),
+        highLightColor: highLightColor,
+        focusColor: focusColor,
+        ignoreCase: ignoreCase,
+        onErrorCallback: onErrorCallback);
   }
 
   factory TextViewer.file(
@@ -78,6 +85,7 @@ class TextViewer {
     Color highLightColor = Colors.yellow,
     Color focusColor = Colors.amber,
     bool ignoreCase = true,
+    OnErrorCallback? onErrorCallback,
   }) {
     return TextViewer._(
       filePath: filePath,
@@ -89,6 +97,7 @@ class TextViewer {
       highLightColor: highLightColor,
       focusColor: focusColor,
       ignoreCase: ignoreCase,
+      onErrorCallback: onErrorCallback,
     );
   }
 
@@ -100,17 +109,18 @@ class TextViewer {
     Color highLightColor = Colors.yellow,
     Color focusColor = Colors.amber,
     bool ignoreCase = true,
+    OnErrorCallback? onErrorCallback,
   }) {
     return TextViewer._(
-      textContent: textContent,
-      textStyle: textStyle,
-      highLightTextStyle: highLightTextStyle ??
-          textStyle.copyWith(background: Paint()..color = highLightColor),
-      focusTextStyle: focusTextStyle ??
-          textStyle.copyWith(background: Paint()..color = focusColor),
-      highLightColor: highLightColor,
-      focusColor: focusColor,
-      ignoreCase: ignoreCase,
-    );
+        textContent: textContent,
+        textStyle: textStyle,
+        highLightTextStyle: highLightTextStyle ??
+            textStyle.copyWith(background: Paint()..color = highLightColor),
+        focusTextStyle: focusTextStyle ??
+            textStyle.copyWith(background: Paint()..color = focusColor),
+        highLightColor: highLightColor,
+        focusColor: focusColor,
+        ignoreCase: ignoreCase,
+        onErrorCallback: onErrorCallback);
   }
 }

lib/screen/text_viewer_page.dart

@@ -1,4 +1,5 @@
 import 'dart:io' if (dart.library.html) 'package:flutter_text_viewer/web.dart';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_text_viewer/model/text_viewer.dart';
@@ -126,9 +127,13 @@ class _TextViewerPageState extends State<TextViewerPage> {
               searchValue = value;
             });
           } else {
-            ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
-              content: Text('Enter some value to search'),
-            ));
+            if (widget.textViewer.onErrorCallback != null) {
+              widget.textViewer.onErrorCallback!('Enter some value to search');
+            } else {
+              ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
+                content: Text('Enter some value to search'),
+              ));
+            }
           }
         },
       );

lib/web.dart

@@ -5,12 +5,12 @@ class File {
   File(this.path) {
     throw PlatformException(
       code: 'Platform Exception',
-      message: 'ImageViewer.file does not support in web',
+      message: 'TextViewer.file does not support in web',
     );
   }
   String readAsStringSync() {
     throw PlatformException(
         code: 'Platform Exception',
-        message: 'ImageViewer.file does not support in web');
+        message: 'TextViewer.file does not support in web');
   }
 }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_text_viewer
 description: Flutter textviewer package provide easy and simple way to load and search text from assets,file and even direct input string.
-version: 0.0.5
+version: 0.0.6
 homepage: https://github.com/CodingWithTashi/flutter_text_viewer
 issue_tracker: https://github.com/CodingWithTashi/flutter_text_viewer/issues
 
@@ -15,6 +15,6 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_lints: ^2.0.0
+  flutter_lints: ^2.0.1
 
 flutter: