Add RedactionEvent support on backend

src/gui/Pages/Chat/Timeline/EventDelegate.qml

@@ -33,6 +33,7 @@ HColumnLayout {
     readonly property bool smallAvatar: compact
     readonly property bool collapseAvatar: combine
     readonly property bool hideAvatar: onRight
+    readonly property bool isRedacted: model.event_type === "RedactionEvent"
 
     readonly property bool hideNameLine:
         model.event_type === "RoomMessageEmote" ||
@@ -221,6 +222,7 @@ HColumnLayout {
         HMenuItemPopupSpawner {
             icon.name: "remove-message"
             text: qsTr("Remove")
+            enabled: ! isRedacted
 
             popup: "Popups/RedactEvents.qml"
             popupParent: chat

src/gui/Utils.qml

@@ -200,6 +200,14 @@ QtObject {
             return qsTr(ev.content).arg(sender).arg(target)
         }
 
+        if (type === "RedactionEvent") {
+            return qsTr(
+                "<i>Removed message" +
+                `${ev.reason ? ". Reason: " + ev.reason : ""}` +
+                "</i>"
+            )
+        }
+
         return qsTr(ev.content).arg(sender)
     }