Improve dark theme

lib/ui/tiles/comment_tile.dart

@@ -4,6 +4,7 @@ import 'package:comunic/ui/widgets/account_image_widget.dart';
 import 'package:comunic/ui/widgets/network_image_widget.dart';
 import 'package:comunic/utils/date_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 
 /// Single comment tile
@@ -90,7 +91,7 @@ class CommentTile extends StatelessWidget {
           child: comment.hasContent
               ? Text(
                   comment.content,
-                  style: TextStyle(color: Colors.black),
+                  style: TextStyle(color: darkTheme() ? darkAccentColor : Colors.black),
                 )
               : null,
         ),

lib/ui/tiles/conversation_message_tile.dart

@@ -5,6 +5,7 @@ import 'package:comunic/ui/widgets/network_image_widget.dart';
 import 'package:comunic/ui/widgets/text_rich_content_widget.dart';
 import 'package:comunic/utils/date_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 
 /// Conversation message tile
@@ -50,20 +51,20 @@ class ConversationMessageTile extends StatelessWidget {
           width: 35.0,
         ),
         itemBuilder: (c) => [
-              // Update message content
-              PopupMenuItem(
-                enabled: message.isOwner,
-                value: _MenuChoices.REQUEST_UPDATE_CONTENT,
-                child: Text(tr("Update")),
-              ),
+          // Update message content
+          PopupMenuItem(
+            enabled: message.isOwner,
+            value: _MenuChoices.REQUEST_UPDATE_CONTENT,
+            child: Text(tr("Update")),
+          ),
 
-              // Delete the message
-              PopupMenuItem(
-                enabled: message.isOwner,
-                value: _MenuChoices.DELETE,
-                child: Text(tr("Delete")),
-              ),
-            ],
+          // Delete the message
+          PopupMenuItem(
+            enabled: message.isOwner,
+            value: _MenuChoices.DELETE,
+            child: Text(tr("Delete")),
+          ),
+        ],
         onSelected: _menuOptionSelected,
       ),
     );
@@ -201,12 +202,17 @@ class ConversationMessageTile extends StatelessWidget {
                               child: TextRichContentWidget(
                                 message.message,
                                 textAlign: TextAlign.justify,
-                                style: TextStyle(color: Colors.black),
+                                style: TextStyle(
+                                    color: darkTheme()
+                                        ? Colors.white
+                                        : Colors.black),
                               ),
                               padding:
                                   EdgeInsets.fromLTRB(15.0, 10.0, 15.0, 10.0),
                               decoration: BoxDecoration(
-                                color: Colors.black12,
+                                color: darkTheme()
+                                    ? Colors.white12
+                                    : Colors.black12,
                                 borderRadius: BorderRadius.circular(8.0),
                               ),
                             ),

lib/ui/tiles/conversation_tile.dart

@@ -3,6 +3,7 @@ import 'package:comunic/lists/users_list.dart';
 import 'package:comunic/models/conversation.dart';
 import 'package:comunic/utils/date_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 
 /// Single conversation tile
@@ -67,7 +68,9 @@ class ConversationTile extends StatelessWidget {
       // Leading icon
       leading: Icon(
         conversation.sawLastMessage ? Icons.check_circle : Icons.lens,
-        color: conversation.sawLastMessage ? null : Colors.blue,
+        color: conversation.sawLastMessage
+            ? (darkTheme() ? darkAccentColor : null)
+            : Colors.blue,
       ),
 
       // Conversation information
@@ -94,15 +97,15 @@ class ConversationTile extends StatelessWidget {
       // Trailing information
       trailing: PopupMenuButton<_PopupMenuChoices>(
         itemBuilder: (b) => <PopupMenuEntry<_PopupMenuChoices>>[
-              PopupMenuItem(
-                child: Text(tr("Update")),
-                value: _PopupMenuChoices.UPDATE,
-              ),
-              PopupMenuItem(
-                child: Text(tr("Delete")),
-                value: _PopupMenuChoices.DELETE,
-              )
-            ],
+          PopupMenuItem(
+            child: Text(tr("Update")),
+            value: _PopupMenuChoices.UPDATE,
+          ),
+          PopupMenuItem(
+            child: Text(tr("Delete")),
+            value: _PopupMenuChoices.DELETE,
+          )
+        ],
         onSelected: _conversationMenuCallback,
       ),
     );

lib/ui/tiles/post_tile.dart

@@ -141,20 +141,20 @@ class _PostTileState extends State<PostTile> {
 
         PopupMenuButton<_PostActions>(
           itemBuilder: (c) => [
-                // Update post content
-                PopupMenuItem(
-                  child: Text(tr("Update content")),
-                  value: _PostActions.UPDATE_CONTENT,
-                  enabled: widget.post.canUpdate,
-                ),
+            // Update post content
+            PopupMenuItem(
+              child: Text(tr("Update content")),
+              value: _PostActions.UPDATE_CONTENT,
+              enabled: widget.post.canUpdate,
+            ),
 
-                // Delete post
-                PopupMenuItem(
-                  child: Text(tr("Delete")),
-                  value: _PostActions.DELETE,
-                  enabled: widget.post.canDelete,
-                ),
-              ],
+            // Delete post
+            PopupMenuItem(
+              child: Text(tr("Delete")),
+              value: _PostActions.DELETE,
+              enabled: widget.post.canDelete,
+            ),
+          ],
           onSelected: _selectedPostMenuAction,
         )
       ],
@@ -333,19 +333,19 @@ class _PostTileState extends State<PostTile> {
     final comments = List<Widget>.generate(
       widget.post.comments.length,
       (num) => CommentTile(
-            comment: widget.post.comments[num],
-            user: widget.usersInfo.getUser(widget.post.comments[num].userID),
-            onUpdateLike: _updateCommentLike,
-            onUpdateComment: _updateCommentContent,
-            onDeleteComment: _deleteComment,
-          ),
+        comment: widget.post.comments[num],
+        user: widget.usersInfo.getUser(widget.post.comments[num].userID),
+        onUpdateLike: _updateCommentLike,
+        onUpdateComment: _updateCommentContent,
+        onDeleteComment: _deleteComment,
+      ),
     );
 
     // Add comments form
     comments.add(_buildCommentsForm());
 
     return Container(
-      color: Colors.grey[300],
+      color: darkTheme() ? Colors.black38 : Colors.grey[300],
       child: Padding(
         padding: const EdgeInsets.only(top: 8.0, bottom: 8.0),
         child: Column(
@@ -375,10 +375,15 @@ class _PostTileState extends State<PostTile> {
               controller: _commentController,
               onChanged: (s) => setState(() {}),
               onSubmitted: _canSubmitComment ? (s) => _submitComment() : null,
+
+              style: TextStyle(
+                color: darkTheme() ? Colors.white : null,
+              ),
+
               decoration: InputDecoration(
                 hintText: tr("New comment..."),
                 hintStyle: TextStyle(color: Colors.grey, fontSize: 12),
-                fillColor: Colors.white,
+                fillColor: darkTheme() ? Colors.black38 : Colors.white,
                 filled: true,
                 border: OutlineInputBorder(
                     borderSide: BorderSide(width: 0.5, color: Colors.grey),

lib/ui/widgets/navbar_widget.dart

@@ -1,4 +1,5 @@
 import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 
 /// Navigation bar widget
@@ -18,8 +19,8 @@ enum BarCallbackActions {
   ACTION_LOGOUT
 }
 
-const _PrimaryColor = Colors.blue;
-const _SecondaryColor = Colors.white;
+Color _primaryColor() => darkTheme() ? Colors.black : Colors.blue;
+Color _secondaryColor() => darkTheme() ? darkAccentColor : Colors.white;
 
 /// Menu item information
 class _MenuItem {
@@ -93,7 +94,7 @@ class ComunicAppBar extends StatelessWidget implements PreferredSizeWidget {
   @override
   Widget build(BuildContext context) {
     return Material(
-      color: Colors.blue,
+      color: darkTheme() ? Colors.black : Colors.blue,
       child: Row(
         crossAxisAlignment: CrossAxisAlignment.stretch,
         children: List.generate(
@@ -134,7 +135,7 @@ class _MenuItemWidget extends StatelessWidget {
 
     return Expanded(
       child: Material(
-        color: isSelected ? _SecondaryColor : _PrimaryColor,
+        color: isSelected ? _secondaryColor() : _primaryColor(),
         child: !item.isMenu
             ? InkWell(
                 child: _buildIconContainer(),
@@ -151,7 +152,7 @@ class _MenuItemWidget extends StatelessWidget {
       children: <Widget>[
         IconTheme(
           data: IconThemeData(
-              color: isSelected ? _PrimaryColor : _SecondaryColor),
+              color: isSelected ? _primaryColor() : _secondaryColor()),
           child: item.icon,
         )
       ],