Basic and very raw implementation of the Reply To feature.

src/widgets/context-menu.jsx

@@ -45,6 +45,11 @@ const messages = defineMessages({
     defaultMessage: 'Unmute',
     description: 'Turn notifications on'
   },
+  reply: {
+    id: 'menu_item_reply',
+    defaultMessage: 'Reply',
+    description: 'Reply to message'
+  },
   topic_delete: {
     id: 'menu_item_delete_topic',
     defaultMessage: 'Delete',
@@ -171,6 +176,13 @@ class ContextMenu extends React.Component {
           return this.retryMessage(params, errorHandler);
         }
       },
+      'menu_item_reply': {
+        id: 'menu_item_reply',
+        title: formatMessage(messages.reply),
+        handler: (params, errorHandler) => {
+          return this.replyToMessage(params, errorHandler);
+        }
+      },
       'topic_unmute': {
         id: 'topic_unmute',
         title: formatMessage(messages.unmute),
@@ -411,6 +423,11 @@ class ContextMenu extends React.Component {
     return result;
   }
 
+  replyToMessage(params, errorHandler) {
+    console.log("Reply to message", params);
+    params.pickReply({ seq: params.seq, content: params.content })
+  }
+
   render() {
     let count = 0;
     let menu = [];