TF-61 Add RichTextWebController to handle rich text on composer web

lib/features/composer/presentation/controller/rich_text_web_controller.dart

@@ -0,0 +1,44 @@
+
+import 'package:core/utils/app_logger.dart';
+import 'package:get/get.dart';
+import 'package:html_editor_enhanced/html_editor.dart';
+import 'package:tmail_ui_user/features/composer/presentation/model/rich_text_style_type.dart';
+
+class RichTextWebController extends GetxController {
+
+  final editorController = HtmlEditorController(processNewLineAsBr: true);
+
+  final listTextStyleApply = RxList<RichTextStyleType>();
+
+  void onEditorSettingsChange(EditorSettings settings) {
+    log('RichTextWebController::onEditorSettingsChange():');
+    listTextStyleApply.clear();
+    if (settings.isBold) {
+      listTextStyleApply.add(RichTextStyleType.bold);
+    }
+
+    if (settings.isItalic) {
+      listTextStyleApply.add(RichTextStyleType.italic);
+    }
+
+    if (settings.isUnderline) {
+      listTextStyleApply.add(RichTextStyleType.underline);
+    }
+  }
+
+  void applyRichTextStyle(RichTextStyleType textStyleType) {
+    editorController.execCommand(textStyleType.commandAction);
+    _selectTextStyleType(textStyleType);
+  }
+
+  void _selectTextStyleType(RichTextStyleType textStyleType) {
+    if (listTextStyleApply.contains(textStyleType)) {
+      listTextStyleApply.remove(textStyleType);
+    } else {
+      listTextStyleApply.add(textStyleType);
+    }
+  }
+
+  bool isTextStyleTypeSelected(RichTextStyleType richTextStyleType) =>
+      listTextStyleApply.contains(richTextStyleType);
+}