feat(ffi): expose a custom timeline builder that can be configured to…

… show only media, images and videos or files and audios

Instances of these timelines will be used to power the 2 different tabs shown on the new media browser. The client will be responsible for interacting with it similar to a normal timeline and transforming its data into something renderable e.g. section by date separators (which will be made configurable in a follow up PR)

bindings/matrix-sdk-ffi/src/room.rs

@@ -20,10 +20,11 @@ use ruma::{
         call::notify,
         room::{
             avatar::ImageInfo as RumaAvatarImageInfo,
-            message::RoomMessageEventContentWithoutRelation,
-            power_levels::RoomPowerLevels as RumaPowerLevels, MediaSource,
+            message::{MessageType, RoomMessageEventContentWithoutRelation},
+            power_levels::RoomPowerLevels as RumaPowerLevels,
+            MediaSource,
         },
-        TimelineEventType,
+        AnyMessageLikeEventContent, AnySyncTimelineEvent, TimelineEventType,
     },
     EventId, Int, OwnedDeviceId, OwnedUserId, RoomAliasId, UserId,
 };
@@ -52,6 +53,12 @@ pub enum Membership {
     Knocked,
 }
 
+#[derive(Debug, Clone, uniffi::Enum)]
+pub enum MediaEventsTimelineFilter {
+    ImageAndVideo,
+    FileAndAudio,
+}
+
 impl From<RoomState> for Membership {
     fn from(value: RoomState) -> Self {
         match value {
@@ -260,6 +267,43 @@ impl Room {
         Ok(Timeline::new(timeline))
     }
 
+    pub async fn media_events_timeline(
+        &self,
+        filter: MediaEventsTimelineFilter,
+    ) -> Result<Arc<Timeline>, ClientError> {
+        let room = &self.inner;
+
+        let mut builder = matrix_sdk_ui::timeline::Timeline::builder(room);
+
+        match filter {
+            MediaEventsTimelineFilter::ImageAndVideo => {
+                builder = builder.event_filter(move |event, _| match event {
+                    AnySyncTimelineEvent::MessageLike(msg) => match msg.original_content() {
+                        Some(AnyMessageLikeEventContent::RoomMessage(content)) => {
+                            matches!(content.msgtype, MessageType::Image(_) | MessageType::Video(_))
+                        }
+                        _ => false,
+                    },
+                    _ => false,
+                });
+            }
+            MediaEventsTimelineFilter::FileAndAudio => {
+                builder = builder.event_filter(move |event, _| match event {
+                    AnySyncTimelineEvent::MessageLike(msg) => match msg.original_content() {
+                        Some(AnyMessageLikeEventContent::RoomMessage(content)) => {
+                            matches!(content.msgtype, MessageType::Audio(_) | MessageType::File(_))
+                        }
+                        _ => false,
+                    },
+                    _ => false,
+                });
+            }
+        }
+
+        let timeline = builder.build().await?;
+        Ok(Timeline::new(timeline))
+    }
+
     pub fn is_encrypted(&self) -> Result<bool, ClientError> {
         Ok(RUNTIME.block_on(self.inner.is_encrypted())?)
     }