hook up UI

src/domain/session/room/RoomViewModel.js

@@ -204,6 +204,10 @@ class ComposerViewModel extends ViewModel {
         return success;
     }
 
+    sendAttachment() {
+        this._roomVM._sendFile();
+    }
+
     get canSend() {
         return !this._isEmpty;
     }

src/platform/web/ui/session/room/MessageComposer.js

@@ -30,6 +30,11 @@ export class MessageComposer extends TemplateView {
         });
         return t.div({className: "MessageComposer"}, [
             this._input,
+            t.button({
+                className: "attach",
+                title: vm.i18n`Attach`,
+                onClick: () => vm.sendAttachment(),
+            }, vm.i18n`Attach`),
             t.button({
                 className: "send",
                 title: vm.i18n`Send`,