finish sender_list && plain-text-search

flutter/lib/components/modals/filter_modal_searchplain.dart

@@ -0,0 +1,60 @@
+import 'package:flutter/material.dart';
+import 'package:simplecloudnotifier/pages/message_list/message_filter_chiplet.dart';
+import 'package:simplecloudnotifier/state/app_events.dart';
+
+class FilterModalSearchPlain extends StatefulWidget {
+  @override
+  _FilterModalSearchPlainState createState() => _FilterModalSearchPlainState();
+}
+
+class _FilterModalSearchPlainState extends State<FilterModalSearchPlain> {
+  final _controller = TextEditingController();
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: const Text('Search'),
+      content: Container(
+        child: TextField(
+          autofocus: true,
+          controller: _controller,
+          decoration: InputDecoration(hintText: "Search..."),
+        ),
+      ),
+      actions: <Widget>[
+        TextButton(
+          style: TextButton.styleFrom(textStyle: Theme.of(context).textTheme.labelLarge),
+          child: const Text('Apply'),
+          onPressed: _onOkay,
+        ),
+      ],
+    );
+  }
+
+  void _onOkay() {
+    Navigator.of(context).pop();
+
+    List<MessageFilterChiplet> chiplets = [];
+    if (_controller.text.isNotEmpty) {
+      chiplets.add(MessageFilterChiplet(
+        label: _controller.text,
+        value: _controller.text,
+        type: MessageFilterChipletType.plainSearch,
+      ));
+    }
+
+    AppEvents().notifyFilterListeners([MessageFilterChipletType.plainSearch], chiplets);
+  }
+}

flutter/lib/components/modals/filter_modal_sendername.dart

@@ -73,15 +73,13 @@ class _FilterModalSendernameState extends State<FilterModalSendername> {
         TextButton(
           style: TextButton.styleFrom(textStyle: Theme.of(context).textTheme.labelLarge),
           child: const Text('Apply'),
-          onPressed: () {
-            onOkay();
-          },
+          onPressed: _onOkay,
         ),
       ],
     );
   }
 
-  void onOkay() {
+  void _onOkay() {
     Navigator.of(context).pop();
 
     final chiplets = _selectedEntries