fix: list scroll keyboard behaviour (#304)

* fix: Keyboard now closes by clicking on space or scrolling.

* fix: Exposed system and normal message tap builders

* fmt: dartfmt

packages/stream_chat_flutter/lib/src/message_list_view.dart

@@ -136,6 +136,8 @@ class MessageListView extends StatefulWidget {
     this.messageListBuilder,
     this.errorWidgetBuilder,
     this.customAttachmentBuilders,
+    this.onMessageTap,
+    this.onSystemMessageTap,
   }) : super(key: key);
 
   /// Function used to build a custom message widget
@@ -216,6 +218,12 @@ class MessageListView extends StatefulWidget {
   /// Please change this in the [MessageWidget] if you are using a custom implementation
   final Map<String, AttachmentBuilder> customAttachmentBuilders;
 
+  /// Called when any message is tapped except a system message (use [onSystemMessageTap] instead)
+  final void Function(Message) onMessageTap;
+
+  /// Called when system message is tapped
+  final void Function(Message) onSystemMessageTap;
+
   @override
   _MessageListViewState createState() => _MessageListViewState();
 }
@@ -364,6 +372,9 @@ class _MessageListViewState extends State<MessageListView> {
               childAnchor: Alignment.topCenter,
               message: statusString,
               child: LazyLoadScrollView(
+                onPageScrollStart: () {
+                  FocusScope.of(context).unfocus();
+                },
                 onStartOfPage: () async {
                   _inBetweenList = false;
                   if (!_upToDate) {
@@ -812,6 +823,12 @@ class _MessageListViewState extends State<MessageListView> {
         }
       },
       customAttachmentBuilders: widget.customAttachmentBuilders,
+      onMessageTap: (message) {
+        if (widget.onMessageTap != null) {
+          widget.onMessageTap(message);
+        }
+        FocusScope.of(context).unfocus();
+      },
     );
   }
 
@@ -825,6 +842,12 @@ class _MessageListViewState extends State<MessageListView> {
           SystemMessage(
             key: ValueKey<String>('MESSAGE-${message.id}'),
             message: message,
+            onMessageTap: (message) {
+              if (widget.onSystemMessageTap != null) {
+                widget.onSystemMessageTap(message);
+              }
+              FocusScope.of(context).unfocus();
+            },
           );
     }
 
@@ -974,6 +997,12 @@ class _MessageListViewState extends State<MessageListView> {
         }
       },
       customAttachmentBuilders: widget.customAttachmentBuilders,
+      onMessageTap: (message) {
+        if (widget.onMessageTap != null) {
+          widget.onMessageTap(message);
+        }
+        FocusScope.of(context).unfocus();
+      },
     );
 
     if (!message.isDeleted &&

packages/stream_chat_flutter/lib/src/message_widget.dart

@@ -143,6 +143,9 @@ class MessageWidget extends StatefulWidget {
   /// Function called when quotedMessage is tapped
   final OnQuotedMessageTap onQuotedMessageTap;
 
+  /// Function called when message is tapped
+  final void Function(Message) onMessageTap;
+
   ///
   MessageWidget({
     Key key,
@@ -157,6 +160,7 @@ class MessageWidget extends StatefulWidget {
     this.borderRadiusGeometry,
     this.attachmentBorderRadiusGeometry,
     this.onMentionTap,
+    this.onMessageTap,
     this.showReactionPickerIndicator = false,
     this.showUserAvatar = DisplayWidget.show,
     this.showSendingIndicator = true,
@@ -311,6 +315,9 @@ class _MessageWidgetState extends State<MessageWidget>
       type: MaterialType.transparency,
       child: Portal(
         child: InkWell(
+          onTap: () {
+            widget.onMessageTap(widget.message);
+          },
           onLongPress: widget.message.isDeleted && !isFailedState
               ? null
               : () => onLongPress(context),