Show album rail when entering media preview from All Media.

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationItem.java

@@ -2331,6 +2331,7 @@ public final class ConversationItem extends RelativeLayout implements BindableCo
             false,
             false,
             false,
+            false,
             MediaDatabase.Sorting.Newest.ordinal(),
             slide.isVideoGif());
         context.startActivity(MediaIntentFactory.create(context, args));

app/src/main/java/org/thoughtcrime/securesms/mediaoverview/MediaOverviewPageFragment.java

@@ -247,6 +247,7 @@ public final class MediaOverviewPageFragment extends Fragment
           true,
           true,
           threadId == MediaDatabase.ALL_THREADS,
+          true,
           sorting.ordinal(),
           attachment.isVideoGif());
       context.startActivity(MediaIntentFactory.create(context, args));

app/src/main/java/org/thoughtcrime/securesms/mediapreview/MediaIntentFactory.kt

@@ -35,6 +35,7 @@ object MediaIntentFactory {
     val leftIsRecent: Boolean = false,
     val hideAllMedia: Boolean = false,
     val showThread: Boolean = false,
+    val allMediaInRail: Boolean = false,
     val sorting: Int,
     val isVideoGif: Boolean
   ) : Parcelable

app/src/main/java/org/thoughtcrime/securesms/mediapreview/MediaPreviewV2Fragment.kt

@@ -141,6 +141,7 @@ class MediaPreviewV2Fragment : Fragment(R.layout.fragment_media_preview_v2), Med
         }.show()
     }
     viewModel.setShowThread(args.showThread)
+    viewModel.setAlwaysShowAlbumRail(args.allMediaInRail)
     val sorting = MediaDatabase.Sorting.values()[args.sorting]
     viewModel.fetchAttachments(PartAuthority.requireAttachmentId(args.initialMediaUri), args.threadId, sorting)
   }
@@ -198,9 +199,13 @@ class MediaPreviewV2Fragment : Fragment(R.layout.fragment_media_preview_v2), Med
     val currentItem: MediaDatabase.MediaRecord = currentState.mediaRecords[currentState.position]
     val currentFragment: Fragment? = childFragmentManager.findFragmentByTag("f${currentState.position}")
     val playbackControls = (currentFragment as? MediaPreviewFragment)?.playbackControls
-    val albumThumbnailMedia = currentState.mediaRecords
+    val albumThumbnailMedia = if (currentState.allMediaInAlbumRail) {
-      .filter { it.attachment != null && it.attachment!!.mmsId == currentItem.attachment?.mmsId }
+      currentState.mediaRecords.map { it.toMedia() }
-      .map { it.toMedia() }
+    } else {
+      currentState.mediaRecords
+        .filter { it.attachment != null && it.attachment!!.mmsId == currentItem.attachment?.mmsId }
+        .map { it.toMedia() }
+    }
     val caption = currentItem.attachment?.caption
     if (albumThumbnailMedia.size <= 1 && caption == null && playbackControls == null) {
       binding.mediaPreviewDetailsContainer.visibility = View.GONE

app/src/main/java/org/thoughtcrime/securesms/mediapreview/MediaPreviewV2State.kt

@@ -6,7 +6,8 @@ data class MediaPreviewV2State(
   val mediaRecords: List<MediaDatabase.MediaRecord> = emptyList(),
   val loadState: LoadState = LoadState.INIT,
   val position: Int = 0,
-  val showThread: Boolean = false
+  val showThread: Boolean = false,
+  val allMediaInAlbumRail: Boolean = false
 ) {
   enum class LoadState { INIT, READY, LOADED }
 }

app/src/main/java/org/thoughtcrime/securesms/mediapreview/MediaPreviewV2ViewModel.kt

@@ -41,6 +41,12 @@ class MediaPreviewV2ViewModel : ViewModel() {
     }
   }
 
+  fun setAlwaysShowAlbumRail(value: Boolean) {
+    store.update { oldState ->
+      oldState.copy(allMediaInAlbumRail = value)
+    }
+  }
+
   fun setCurrentPage(position: Int) {
     store.update { oldState ->
       oldState.copy(position = position, loadState = MediaPreviewV2State.LoadState.LOADED)

app/src/main/java/org/thoughtcrime/securesms/mms/AttachmentManager.java

@@ -481,6 +481,7 @@ public class AttachmentManager {
           false,
           false,
           false,
+          false,
           MediaDatabase.Sorting.Newest.ordinal(),
           slide.isVideoGif());
       context.startActivity(MediaIntentFactory.create(context, args));