Debug: Show all events

res/css/_components.scss

@@ -124,6 +124,7 @@
 @import "./views/messages/_SenderProfile.scss";
 @import "./views/messages/_TextualEvent.scss";
 @import "./views/messages/_UnknownBody.scss";
+@import "./views/messages/_ViewSourceEvent.scss";
 @import "./views/room_settings/_AliasSettings.scss";
 @import "./views/room_settings/_ColorSettings.scss";
 @import "./views/rooms/_AppsDrawer.scss";

res/css/views/messages/_ViewSourceEvent.scss

@@ -0,0 +1,50 @@
+/*
+Copyright 2019 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+.mx_EventTile_content.mx_ViewSourceEvent {
+    display: flex;
+    opacity: 0.6;
+    font-size: 12px;
+
+    pre, code {
+        flex: 1;
+    }
+
+    pre {
+        line-height: 1.2;
+        margin: 3.5px 0;
+    }
+
+    .mx_ViewSourceEvent_toggle {
+        width: 12px;
+        mask-repeat: no-repeat;
+        mask-position: 0 center;
+        mask-size: auto 12px;
+        visibility: hidden;
+        background-color: $accent-color;
+        mask-image: url('$(res)/img/feather-customised/widget/maximise.svg');
+    }
+
+    &.mx_ViewSourceEvent_expanded .mx_ViewSourceEvent_toggle {
+        mask-position: 0 bottom;
+        margin-bottom: 7px;
+        mask-image: url('$(res)/img/feather-customised/widget/minimise.svg');
+    }
+
+    &:hover .mx_ViewSourceEvent_toggle {
+        visibility: visible;
+    }
+}