Fix files background color

lib/ui/screens/conversation_screen.dart

@@ -5,6 +5,7 @@ import 'package:comunic/helpers/events_helper.dart';
 import 'package:comunic/helpers/users_helper.dart';
 import 'package:comunic/lists/conversation_messages_list.dart';
 import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/models/conversation.dart';
 import 'package:comunic/models/conversation_message.dart';
 import 'package:comunic/models/new_conversation_message.dart';
 import 'package:comunic/ui/tiles/conversation_message_tile.dart';
@@ -41,6 +42,7 @@ class _ConversationScreenState extends SafeState<ConversationScreen> {
   final UsersHelper _usersHelper = UsersHelper();
 
   // Class members
+  Conversation _conversation;
   ConversationMessagesList _messages;
   UsersList _usersInfo = UsersList();
   ErrorLevel _error = ErrorLevel.NONE;
@@ -78,6 +80,9 @@ class _ConversationScreenState extends SafeState<ConversationScreen> {
   Future<void> _init() async {
     _scrollController = ScrollWatcher(onReachBottom: _loadOlderMessages);
 
+    _conversation =
+        await ConversationsHelper().getSingle(widget.conversationID);
+
     // Fetch latest messages
     await _loadMessages(false);
     await _loadMessages(true);
@@ -321,6 +326,7 @@ class _ConversationScreenState extends SafeState<ConversationScreen> {
                     users: _usersInfo,
                   )
                 : ConversationMessageTile(
+                    conversation: _conversation,
                     message: _messages.elementAt(i),
                     userInfo: _usersInfo.getUser(_messages[i].userID),
                     isLastMessage: _isLastMessage(i),

lib/ui/tiles/conversation_message_tile.dart

@@ -1,3 +1,4 @@
+import 'package:comunic/models/conversation.dart';
 import 'package:comunic/models/conversation_message.dart';
 import 'package:comunic/models/user.dart';
 import 'package:comunic/ui/widgets/account_image_widget.dart';
@@ -18,6 +19,7 @@ typedef OnRequestMessageUpdate = void Function(ConversationMessage);
 typedef OnRequestMessageDelete = void Function(ConversationMessage);
 
 class ConversationMessageTile extends StatelessWidget {
+  final Conversation conversation;
   final ConversationMessage message;
   final User userInfo;
   final bool isLastMessage;
@@ -27,6 +29,7 @@ class ConversationMessageTile extends StatelessWidget {
 
   const ConversationMessageTile({
     Key key,
+    @required this.conversation,
     @required this.message,
     @required this.userInfo,
     @required this.isLastMessage,
@@ -41,6 +44,12 @@ class ConversationMessageTile extends StatelessWidget {
         assert(onRequestMessageDelete != null),
         super(key: key);
 
+  Color get backgroundColor => message.isOwner
+      ? conversation.color ?? Colors.blueAccent
+      : darkTheme()
+          ? Colors.white12
+          : Colors.black12;
+
   /// Build account image
   Widget _buildAccountImage(BuildContext context) {
     return Container(
@@ -74,6 +83,7 @@ class ConversationMessageTile extends StatelessWidget {
   Widget _buildMessageFile(BuildContext context) => ConversationFileWidget(
         messageID: message.id,
         file: message.file,
+        defaultBackgroundColor: backgroundColor,
       );
 
   /// Build message date
@@ -127,7 +137,7 @@ class ConversationMessageTile extends StatelessWidget {
                                   padding: EdgeInsets.fromLTRB(
                                       15.0, 10.0, 15.0, 10.0),
                                   decoration: BoxDecoration(
-                                    color: Colors.blueAccent,
+                                    color: backgroundColor,
                                     borderRadius: BorderRadius.circular(8.0),
                                   ),
                                 ),
@@ -204,9 +214,7 @@ class ConversationMessageTile extends StatelessWidget {
                               padding:
                                   EdgeInsets.fromLTRB(15.0, 10.0, 15.0, 10.0),
                               decoration: BoxDecoration(
-                                color: darkTheme()
-                                    ? Colors.white12
-                                    : Colors.black12,
+                                color: backgroundColor,
                                 borderRadius: BorderRadius.circular(8.0),
                               ),
                             ),

lib/ui/widgets/conversation_file_tile.dart

@@ -11,9 +11,11 @@ const _AreaSize = 150.0;
 class ConversationFileWidget extends StatefulWidget {
   final int messageID;
   final ConversationMessageFile file;
+  final Color defaultBackgroundColor;
 
   const ConversationFileWidget({
     Key key,
+    @required this.defaultBackgroundColor,
     @required this.messageID,
     @required this.file,
   })  : assert(messageID != null),
@@ -28,8 +30,11 @@ class _ConversationFileWidgetState extends State<ConversationFileWidget> {
   ConversationMessageFile get file => widget.file;
 
   @override
-  Widget build(BuildContext context) =>
-      Container(width: _AreaSize, height: _AreaSize, child: _buildContent());
+  Widget build(BuildContext context) => Container(
+        width: _AreaSize,
+        height: _AreaSize,
+        child: _buildContent(),
+      );
 
   Widget _buildContent() {
     switch (file.fileType) {
@@ -45,7 +50,9 @@ class _ConversationFileWidgetState extends State<ConversationFileWidget> {
 
       // The file is not downloadable, we open it in the browser
       default:
-        return Center(
+        return Container(
+          color: widget.defaultBackgroundColor,
+          child: Center(
             child: MaterialButton(
               child: Column(
                 crossAxisAlignment: CrossAxisAlignment.center,
@@ -60,6 +67,7 @@ class _ConversationFileWidgetState extends State<ConversationFileWidget> {
               ),
               onPressed: () => launch(file.url),
             ),
+          ),
         );
         break;
     }