centered file preview, made text copyable

lib/view/pages/talk/components/chatBubble.dart

@@ -206,7 +206,7 @@ class _ChatBubbleState extends State<ChatBubble> with SingleTickerProviderStateM
             ),
           ),
           Visibility(
-            visible: !message.containsFile,
+            visible: widget.bubbleData.message != '{file}',
             child: ListTile(
               leading: const Icon(Icons.copy),
               title: const Text('Nachricht kopieren'),

lib/view/pages/talk/components/chatMessage.dart

@@ -21,22 +21,29 @@ class ChatMessage {
   ChatMessage({required this.originalMessage, this.originalData}) {
     if(originalData?.containsKey('file') ?? false) {
       file = originalData?['file'];
-      content = file?.name ?? 'Datei';
-    } else {
-      content = RichObjectStringProcessor.parseToString(originalMessage, originalData);
     }
+    content = RichObjectStringProcessor.parseToString(originalMessage, originalData);
   }
 
   Widget getWidget() {
 
-    if(file == null) {
-      return Linkify(
+    var contentWidget = Linkify(
       text: content,
       onOpen: onOpen,
     );
-    }
 
-    return Padding(padding: const EdgeInsets.only(top: 5), child: CachedNetworkImage(
+    if(file == null) return contentWidget;
+
+    return Padding(
+        padding: const EdgeInsets.only(top: 5),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              mainAxisSize: MainAxisSize.max,
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                CachedNetworkImage(
                   errorWidget: (context, url, error) => Row(
                     mainAxisSize: MainAxisSize.min,
                     crossAxisAlignment: CrossAxisAlignment.center,
@@ -53,7 +60,14 @@ class ChatMessage {
                   fadeOutDuration: Duration.zero,
                   errorListener: (value) {},
                   imageUrl: 'https://${AccountData().buildHttpAuthString()}@${EndpointData().nextcloud().full()}/index.php/core/preview?fileId=${file!.id}&x=100&y=-1&a=1',
-    ));
+                )
+              ],
+            ),
+            SizedBox(height: 5),
+            contentWidget
+          ],
+        )
+    );
   }
 
   Future<void> onOpen(LinkableElement link) async {