feat: added more text commands

lib/src/widgets/heading_dialog.dart

@@ -0,0 +1,34 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_html/flutter_html.dart';
+
+class HeadingDialog extends StatelessWidget {
+  List formats = [
+    {'id': '1', 'title': '<h1>Heading 1</h1>'},
+    {'id': '2', 'title': '<h2>Heading 2</h2>'},
+    {'id': '3', 'title': '<h3>Heading 3</h3>'},
+    {'id': '4', 'title': '<h4>Heading 4</h4>'},
+    {'id': '5', 'title': '<h5>Heading 5</h5>'},
+    {'id': '6', 'title': '<h6>Heading 6</h6>'},
+    {'id': 'p', 'title': '<p>Text body</p>'},
+    {
+      'id': 'pre',
+      'title': '<pre><font face=\"courier\">Preformat</font></pre>'
+    },
+    {'id': 'blockquote', 'title': '<blockquote>Quote</blockquote>'},
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        for (Map format in formats)
+          InkWell(
+            child: Html(data: format['title']),
+            onTap: () => Navigator.pop(context, format['id']),
+          )
+      ],
+    );
+  }
+}