[fractal/notif-msg-types] notifications: handle non text messages more gracefully

[Alexandre Franke <afranke src gnome org>]

commit be2d8fe9166b6644f3c3efbd2c4250c6d591e51b
Author: Alexandre Franke <afranke gnome org>
Date:   Sun Jun 14 18:03:44 2020 +0200

    notifications: handle non text messages more gracefully

 fractal-gtk/src/appop/notify.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/fractal-gtk/src/appop/notify.rs b/fractal-gtk/src/appop/notify.rs
index 3dee055b..85e0216a 100644
--- a/fractal-gtk/src/appop/notify.rs
+++ b/fractal-gtk/src/appop/notify.rs
@@ -46,7 +46,13 @@ impl AppOp {
         let server_url = self.login_data.clone()?.server_url;
         let msg = self.get_message_by_id(room_id, id)?;
         let r = self.rooms.get(room_id)?;
-        let short_body = dirty_truncate(&msg.body, 80).to_string();
+        let short_body = match &msg.mtype[..] {
+            "m.audio" => i18n("An audio file has been added to the conversation."),
+            "m.image" => i18n("An image has been added to the conversation."),
+            "m.video" => i18n("A video has been added to the conversation."),
+            "m.file" => i18n("A file has been added to the conversation."),
+            _ => dirty_truncate(&msg.body, 80).to_string(),
+        };
 
         let title = if r.direct {
             i18n(" (direct message)")