🐛 add error message for link preview parse error #276 (#277)

Co-authored-by: Apurva Kanthraviya <apurvakanthraviya2001@gmail.com>

Author: apurva010

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 * **Fix**: [282](https://github.com/SimformSolutionsPvtLtd/flutter_chatview/pull/282) Upgrade
   version of audio wave forms 1.2.0
+* **Fix**: [276](https://github.com/SimformSolutionsPvtLtd/flutter_chatview/issues/276) link preview
+  custom error message
 
 ## [2.3.0]
 

README.md

@@ -1011,6 +1011,20 @@ ChatView(
 ),
 ```
 
+
+36. Use `errorBody` to displays an error message when the link cannot be parsed for preview.
+
+
+```dart
+ChatView(
+  ...
+    linkPreviewConfig: LinkPreviewConfiguration(
+      errorBody: 'Error encountered while parsing the link for preview'
+),
+  ...
+),
+```
+
 ## How to use
 
 Check out [blog](https://medium.com/simform-engineering/chatview-a-cutting-edge-chat-ui-solution-7367b1f9d772) for better understanding and basic implementation.

lib/src/models/config_models/link_preview_configuration.dart

@@ -50,6 +50,9 @@ class LinkPreviewConfiguration {
   /// Provides callback when message detect url in message.
   final StringCallback? onUrlDetect;
 
+  /// Displays an error message when the link cannot be parsed for preview.
+  final String? errorBody;
+
   const LinkPreviewConfiguration({
     this.onUrlDetect,
     this.loadingColor,
@@ -60,5 +63,6 @@ class LinkPreviewConfiguration {
     this.linkStyle,
     this.padding,
     this.proxyUrl,
+    this.errorBody,
   });
 }

lib/src/widgets/link_preview.dart

@@ -64,6 +64,7 @@ class LinkPreview extends StatelessWidget {
                 : AnyLinkPreview(
                     link: url,
                     removeElevation: true,
+                    errorBody: linkPreviewConfig?.errorBody,
                     proxyUrl: linkPreviewConfig?.proxyUrl,
                     onTap: _onLinkTap,
                     placeholderWidget: SizedBox(