Cache parsed emojies

lib/ui/tiles/post_tile.dart

@@ -521,7 +521,7 @@ class _PostTileState extends State<PostTile> {
       context: context,
       title: tr("Update comment content"),
       message: tr("New content:"),
-      defaultValue: comment.content,
+      defaultValue: comment.content.isNull ? "" : comment.content.content,
       hint: tr("New content..."),
     );
 
@@ -529,7 +529,7 @@ class _PostTileState extends State<PostTile> {
       return showSimpleSnack(context, tr("Could not update comment content!"));
 
     setState(() {
-      comment.content = newContent;
+      comment.content.content = newContent;
     });
   }
 
@@ -591,7 +591,7 @@ class _PostTileState extends State<PostTile> {
       context: context,
       title: tr("Update post content"),
       message: tr("Please enter message content: "),
-      defaultValue: widget.post.content == null ? "" : widget.post.content,
+      defaultValue: widget.post.content.isNull == null ? "" : widget.post.content.content,
       hint: tr("Post content"),
     );
 
@@ -602,7 +602,7 @@ class _PostTileState extends State<PostTile> {
       return;
     }
 
-    setState(() => widget.post.content = newContent);
+    setState(() => widget.post.content.content = newContent);
   }
 
   /// Perform the deletion of the post

lib/ui/widgets/text_widget.dart

@@ -1,8 +1,8 @@
+import 'package:comunic/models/displayed_content.dart';
 import 'package:comunic/utils/bbcode_parser.dart';
 import 'package:comunic/utils/input_utils.dart';
 import 'package:comunic/utils/navigation_utils.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_emoji/flutter_emoji.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 /// Text widget
@@ -11,8 +11,8 @@ import 'package:url_launcher/url_launcher.dart';
 ///
 /// @author Pierre Hubert
 
-class TextWidget extends StatefulWidget {
-  final String content;
+class TextWidget extends StatelessWidget {
+  final DisplayedString content;
   final bool parseBBcode;
   final TextStyle style;
 
@@ -25,38 +25,28 @@ class TextWidget extends StatefulWidget {
         assert(parseBBcode != null),
         super(key: key);
 
-  @override
-  _TextWidgetState createState() => _TextWidgetState();
-}
-
-class _TextWidgetState extends State<TextWidget> {
-  Widget _cache;
-
   @override
   Widget build(BuildContext context) {
-    if (_cache == null) _cache = doBuild();
+    if (this.content.isNull || this.content.isEmpty) return Text("");
 
-    return _cache;
-  }
-
-  Widget doBuild() {
-    var content = EmojiParser().emojify(this.widget.content);
+    var content = this.content.parsedString;
 
     // Parse BBcode
-    if (this.widget.parseBBcode)
+    if (parseBBcode)
       return BBCodeParsedWidget(
         text: content,
-        parseCallback: (style, text) => _parseLinks(text, style),
+        parseCallback: (style, text) => _parseLinks(context, text, style),
       );
 
     // Just parse link
     return RichText(
-      text: TextSpan(children: _parseLinks(content, widget.style)),
+      text: TextSpan(children: _parseLinks(context, content, style)),
     );
   }
 
   /// Sub parse function
-  List<InlineSpan> _parseLinks(String text, TextStyle style) {
+  List<InlineSpan> _parseLinks(
+      BuildContext context, String text, TextStyle style) {
     if (style == null) style = TextStyle();
 
     var buff = StringBuffer();