Feat/link regexp (#1329)

* Allow for custom regular expression validation of links. (#1048)

* Fix the default RegExp for link validation to support port and match the beginning.

flutter_quill_extensions/lib/embeds/toolbar/image_button.dart

@@ -18,6 +18,7 @@ class ImageButton extends StatelessWidget {
     this.iconTheme,
     this.dialogTheme,
     this.tooltip,
+    this.linkRegExp,
     Key? key,
   }) : super(key: key);
 
@@ -40,6 +41,7 @@ class ImageButton extends StatelessWidget {
 
   final QuillDialogTheme? dialogTheme;
   final String? tooltip;
+  final RegExp? linkRegExp;
 
   @override
   Widget build(BuildContext context) {
@@ -90,7 +92,10 @@ class ImageButton extends StatelessWidget {
   void _typeLink(BuildContext context) {
     showDialog<String>(
       context: context,
-      builder: (_) => LinkDialog(dialogTheme: dialogTheme),
+      builder: (_) => LinkDialog(
+        dialogTheme: dialogTheme,
+        linkRegExp: linkRegExp,
+      ),
     ).then(_linkSubmitted);
   }
 

flutter_quill_extensions/lib/embeds/toolbar/image_video_utils.dart

@@ -10,10 +10,16 @@ import 'package:image_picker/image_picker.dart';
 import '../embed_types.dart';
 
 class LinkDialog extends StatefulWidget {
-  const LinkDialog({this.dialogTheme, this.link, Key? key}) : super(key: key);
+  const LinkDialog({
+    this.dialogTheme,
+    this.link,
+    this.linkRegExp,
+    Key? key,
+  }) : super(key: key);
 
   final QuillDialogTheme? dialogTheme;
   final String? link;
+  final RegExp? linkRegExp;
 
   @override
   LinkDialogState createState() => LinkDialogState();
@@ -22,12 +28,14 @@ class LinkDialog extends StatefulWidget {
 class LinkDialogState extends State<LinkDialog> {
   late String _link;
   late TextEditingController _controller;
+  late RegExp _linkRegExp;
 
   @override
   void initState() {
     super.initState();
     _link = widget.link ?? '';
     _controller = TextEditingController(text: _link);
+    _linkRegExp = widget.linkRegExp ?? AutoFormatMultipleLinksRule.linkRegExp;
   }
 
   @override
@@ -48,8 +56,7 @@ class LinkDialogState extends State<LinkDialog> {
       ),
       actions: [
         TextButton(
-          onPressed: _link.isNotEmpty &&
+          onPressed: _link.isNotEmpty && _linkRegExp.hasMatch(_link)
-                  AutoFormatMultipleLinksRule.linkRegExp.hasMatch(_link)
               ? _applyLink
               : null,
           child: Text(

flutter_quill_extensions/lib/embeds/toolbar/video_button.dart

@@ -18,6 +18,7 @@ class VideoButton extends StatelessWidget {
     this.iconTheme,
     this.dialogTheme,
     this.tooltip,
+    this.linkRegExp,
     Key? key,
   }) : super(key: key);
 
@@ -39,8 +40,11 @@ class VideoButton extends StatelessWidget {
   final QuillIconTheme? iconTheme;
 
   final QuillDialogTheme? dialogTheme;
+
   final String? tooltip;
 
+  final RegExp? linkRegExp;
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);

flutter_quill_extensions/lib/flutter_quill_extensions.dart

@@ -49,6 +49,8 @@ class FlutterQuillEmbeds {
     FilePickImpl? filePickImpl,
     WebImagePickImpl? webImagePickImpl,
     WebVideoPickImpl? webVideoPickImpl,
+    RegExp? imageLinkRegExp,
+    RegExp? videoLinkRegExp,
   }) =>
       [
         if (showImageButton)
@@ -63,6 +65,7 @@ class FlutterQuillEmbeds {
                 mediaPickSettingSelector: mediaPickSettingSelector,
                 iconTheme: iconTheme,
                 dialogTheme: dialogTheme,
+                linkRegExp: imageLinkRegExp,
               ),
         if (showVideoButton)
           (controller, toolbarIconSize, iconTheme, dialogTheme) => VideoButton(
@@ -76,7 +79,8 @@ class FlutterQuillEmbeds {
                 mediaPickSettingSelector: mediaPickSettingSelector,
                 iconTheme: iconTheme,
                 dialogTheme: dialogTheme,
-              ),
+                linkRegExp: videoLinkRegExp,
+          ),
         if ((onImagePickCallback != null || onVideoPickCallback != null) &&
             showCameraButton)
           (controller, toolbarIconSize, iconTheme, dialogTheme) => CameraButton(

lib/src/models/rules/insert.dart

@@ -330,7 +330,7 @@ class AutoFormatMultipleLinksRule extends InsertRule {
   // https://example.net/
   // URL generator tool (https://www.randomlists.com/urls) is used.
   static const _linkPattern =
-      r'(https?:\/\/|www\.)[\w-\.]+\.[\w-\.]+(\/([\S]+)?)?';
+      r'^https?:\/\/[\w\-]+(\.[\w\-]+)*(:\d+)?(\/.*)?$';
   static final linkRegExp = RegExp(_linkPattern, caseSensitive: false);
 
   @override

lib/src/widgets/toolbar.dart

@@ -154,6 +154,10 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
 
     /// The space occupied by toolbar divider
     double? sectionDividerSpace,
+
+    /// Validate the legitimacy of hyperlinks
+    RegExp? linkRegExp,
+
     Key? key,
   }) {
     final isButtonGroupShown = [
@@ -551,6 +555,7 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
             iconTheme: iconTheme,
             dialogTheme: dialogTheme,
             afterButtonPressed: afterButtonPressed,
+            linkRegExp: linkRegExp,
           ),
         if (showSearchButton)
           SearchButton(

lib/src/widgets/toolbar/link_style_button.dart

@@ -18,6 +18,7 @@ class LinkStyleButton extends StatefulWidget {
     this.dialogTheme,
     this.afterButtonPressed,
     this.tooltip,
+    this.linkRegExp,
     Key? key,
   }) : super(key: key);
 
@@ -28,6 +29,7 @@ class LinkStyleButton extends StatefulWidget {
   final QuillDialogTheme? dialogTheme;
   final VoidCallback? afterButtonPressed;
   final String? tooltip;
+  final RegExp? linkRegExp;
 
   @override
   _LinkStyleButtonState createState() => _LinkStyleButtonState();
@@ -108,7 +110,11 @@ class _LinkStyleButtonState extends State<LinkStyleButton> {
         text ??=
             len == 0 ? '' : widget.controller.document.getPlainText(index, len);
         return _LinkDialog(
-            dialogTheme: widget.dialogTheme, link: link, text: text);
+          dialogTheme: widget.dialogTheme,
+          link: link,
+          text: text,
+          linkRegExp: widget.linkRegExp,
+        );
       },
     ).then(
       (value) {
@@ -143,12 +149,18 @@ class _LinkStyleButtonState extends State<LinkStyleButton> {
 }
 
 class _LinkDialog extends StatefulWidget {
-  const _LinkDialog({this.dialogTheme, this.link, this.text, Key? key})
+  const _LinkDialog({
-      : super(key: key);
+    this.dialogTheme,
+    this.link,
+    this.text,
+    this.linkRegExp,
+    Key? key,
+  }) : super(key: key);
 
   final QuillDialogTheme? dialogTheme;
   final String? link;
   final String? text;
+  final RegExp? linkRegExp;
 
   @override
   _LinkDialogState createState() => _LinkDialogState();
@@ -157,6 +169,7 @@ class _LinkDialog extends StatefulWidget {
 class _LinkDialogState extends State<_LinkDialog> {
   late String _link;
   late String _text;
+  late RegExp linkRegExp;
   late TextEditingController _linkController;
   late TextEditingController _textController;
 
@@ -165,6 +178,7 @@ class _LinkDialogState extends State<_LinkDialog> {
     super.initState();
     _link = widget.link ?? '';
     _text = widget.text ?? '';
+    linkRegExp = widget.linkRegExp ?? AutoFormatMultipleLinksRule.linkRegExp;
     _linkController = TextEditingController(text: _link);
     _textController = TextEditingController(text: _text);
   }
@@ -218,8 +232,7 @@ class _LinkDialogState extends State<_LinkDialog> {
     if (_text.isEmpty || _link.isEmpty) {
       return false;
     }
-
+    if (!linkRegExp.hasMatch(_link)) {
-    if (!AutoFormatMultipleLinksRule.linkRegExp.hasMatch(_link)) {
       return false;
     }