Hide verbose state events from the timeline (#2225)

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/EventContent.kt

@@ -85,7 +85,11 @@ data class ProfileChangeContent(
 data class StateContent(
     val stateKey: String,
     val content: OtherState
-) : EventContent
+) : EventContent {
+    fun isVisibleInTimeline(): Boolean {
+        return content.isVisibleInTimeline()
+    }
+}
 
 data class FailedToParseMessageLikeContent(
     val eventType: String,

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/timeline/item/event/OtherState.kt

@@ -41,4 +41,30 @@ sealed interface OtherState {
     data object SpaceChild : OtherState
     data object SpaceParent : OtherState
     data class Custom(val eventType: String) : OtherState
+
+    fun isVisibleInTimeline() = when (this) {
+        // Visible
+        is RoomAvatar,
+        is RoomName,
+        is RoomTopic,
+        is RoomThirdPartyInvite,
+        is RoomCreate,
+        is RoomEncryption,
+        is Custom -> true
+        // Hidden
+        is RoomAliases,
+        is RoomCanonicalAlias,
+        is RoomGuestAccess,
+        is RoomHistoryVisibility,
+        is RoomJoinRules,
+        is RoomPinnedEvents,
+        is RoomPowerLevels,
+        is RoomServerAcl,
+        is RoomTombstone,
+        is SpaceChild,
+        is SpaceParent,
+        is PolicyRuleRoom,
+        is PolicyRuleServer,
+        is PolicyRuleUser -> false
+    }
 }