chore(flutter_chat): various fixes and improvements

- style: use consistent font in buttons
- fix: update profile picture icon for adding a group chat to match design
- fix: align "Write your message here" placeholder text and buttons properly in the input box
- fix: ensure 'next' button is not visible when no one is selected for group chat
- fix: allow scroll to go further so the last person in the list is not hidden by the ‘next’ button
- fix: make entire name clickable when adding members to a group chat
- fix: change text from “create a groupchat” to “start a groupchat”
- fix: make 'create group chat' button inactive until a name is entered
- style: adjust image picker icon sizes, and cancel button font

packages/chat_repository_interface/lib/src/models/message_model.dart

@@ -15,6 +15,7 @@ class MessageModel {
     required this.timestamp,
     required this.senderId,
   });
+
   /// The chat id
   final String chatId;
 

packages/flutter_chat/lib/src/config/chat_translations.dart

@@ -56,7 +56,7 @@ class ChatTranslations {
     this.chatsTitle = "Chats",
     this.chatsUnread = "unread",
     this.newChatButton = "Start chat",
-    this.newGroupChatButton = "Create a groupchat",
+    this.newGroupChatButton = "Start a groupchat",
     this.newChatTitle = "Start a chat",
     this.image = "Image",
     this.searchPlaceholder = "Search...",

packages/flutter_chat/lib/src/screens/chat_detail_screen.dart

@@ -396,6 +396,7 @@ class _ChatBottomState extends State<_ChatBottom> {
               context,
               _textEditingController,
               Row(
+                crossAxisAlignment: CrossAxisAlignment.center,
                 mainAxisSize: MainAxisSize.min,
                 children: [
                   IconButton(
@@ -435,6 +436,8 @@ class _ChatBottomState extends State<_ChatBottom> {
               widget.options.translations,
             ) ??
             TextField(
+              textAlign: TextAlign.start,
+              textAlignVertical: TextAlignVertical.center,
               style: theme.textTheme.bodySmall,
               textCapitalization: TextCapitalization.sentences,
               controller: _textEditingController,

packages/flutter_chat/lib/src/screens/creation/new_chat_screen.dart

@@ -198,12 +198,13 @@ class _Body extends StatelessWidget {
               onPressed: onPressCreateGroupChat,
               child: Row(
                 mainAxisAlignment: MainAxisAlignment.center,
+                crossAxisAlignment: CrossAxisAlignment.center,
                 children: [
                   const Icon(
-                    Icons.groups,
+                    Icons.groups_2,
                   ),
                   const SizedBox(
-                    width: 4,
+                    width: 8,
                   ),
                   Text(
                     translations.newGroupChatButton,

packages/flutter_chat/lib/src/screens/creation/new_group_chat_overview.dart

@@ -110,6 +110,7 @@ class _Body extends StatefulWidget {
 class _BodyState extends State<_Body> {
   final TextEditingController _chatNameController = TextEditingController();
   final TextEditingController _bioController = TextEditingController();
+  final ValueNotifier<bool> isButtonEnabled = ValueNotifier<bool>(false);
   Uint8List? image;
 
   GlobalKey<FormState> formKey = GlobalKey<FormState>();
@@ -121,6 +122,17 @@ class _BodyState extends State<_Body> {
   void initState() {
     users = widget.users;
     super.initState();
+    _chatNameController.addListener(() {
+      isButtonEnabled.value = _chatNameController.text.isNotEmpty;
+    });
+  }
+
+  @override
+  void dispose() {
+    _chatNameController.dispose();
+    _bioController.dispose();
+    isButtonEnabled.dispose();
+    super.dispose();
   }
 
   @override
@@ -325,31 +337,34 @@ class _BodyState extends State<_Body> {
               vertical: 24,
               horizontal: 80,
             ),
-            child: FilledButton(
-              onPressed: users.isNotEmpty
-                  ? () async {
-                      if (!isPressed) {
-                        isPressed = true;
-                        if (formKey.currentState!.validate()) {
-                          await widget.onComplete(
-                            users,
-                            _chatNameController.text,
-                            _bioController.text,
-                            image,
-                          );
+            child: ValueListenableBuilder(
+              valueListenable: isButtonEnabled,
+              builder: (context, isEnabled, child) => FilledButton(
+                onPressed: users.isNotEmpty
+                    ? () async {
+                        if (!isPressed) {
+                          isPressed = true;
+                          if (formKey.currentState!.validate()) {
+                            await widget.onComplete(
+                              users,
+                              _chatNameController.text,
+                              _bioController.text,
+                              image,
+                            );
+                          }
+                          isPressed = false;
                         }
-                        isPressed = false;
                       }
-                    }
-                  : null,
-              child: Row(
-                mainAxisAlignment: MainAxisAlignment.center,
-                children: [
-                  Text(
-                    translations.createGroupChatButton,
-                    style: theme.textTheme.displayLarge,
-                  ),
-                ],
+                    : null,
+                child: Row(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    Text(
+                      translations.createGroupChatButton,
+                      style: theme.textTheme.displayLarge,
+                    ),
+                  ],
+                ),
               ),
             ),
           ),

packages/flutter_chat/lib/src/screens/creation/new_group_chat_screen.dart

@@ -274,20 +274,21 @@ class _NextButton extends StatelessWidget {
           vertical: 24,
           horizontal: 80,
         ),
-        child: FilledButton(
-          onPressed: selectedUsers.isNotEmpty
-              ? () {
-                  onPressGroupChatOverview(selectedUsers);
-                }
-              : null,
-          child: Row(
-            mainAxisAlignment: MainAxisAlignment.center,
-            children: [
-              Text(
-                chatOptions.translations.next,
-                style: theme.textTheme.displayLarge,
-              ),
-            ],
+        child: Visibility(
+          visible: selectedUsers.isNotEmpty,
+          child: FilledButton(
+            onPressed: () async {
+              await onPressGroupChatOverview(selectedUsers);
+            },
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                Text(
+                  chatOptions.translations.next,
+                  style: theme.textTheme.displayLarge,
+                ),
+              ],
+            ),
           ),
         ),
       ),

packages/flutter_chat/lib/src/screens/creation/widgets/user_list.dart

@@ -72,7 +72,7 @@ class _UserListState extends State<UserList> {
         )
         .toList();
     return Padding(
-      padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 12),
+      padding: const EdgeInsets.only(top: 8, left: 12, right: 12, bottom: 80),
       child: ListView.builder(
         itemCount: filteredUsers.length,
         itemBuilder: (context, index) {