Fix various CFv2 scrolling issues.

app/src/main/java/org/thoughtcrime/securesms/conversation/mutiselect/MultiselectItemDecoration.kt

@@ -35,6 +35,7 @@ import org.thoughtcrime.securesms.R
 import org.thoughtcrime.securesms.conversation.ConversationAdapterBridge
 import org.thoughtcrime.securesms.conversation.ConversationAdapterBridge.PulseRequest
 import org.thoughtcrime.securesms.conversation.v2.items.InteractiveConversationElement
+import org.thoughtcrime.securesms.keyvalue.SignalStore
 import org.thoughtcrime.securesms.util.FeatureFlags
 import org.thoughtcrime.securesms.util.ThemeUtil
 import org.thoughtcrime.securesms.util.ViewUtil
@@ -570,7 +571,7 @@ class MultiselectItemDecoration(
   }
 
   private fun RecyclerView.getMultiselectableChildren(): Sequence<Multiselectable> {
-    return if (FeatureFlags.useConversationFragmentV2()) {
+    return if (SignalStore.internalValues().useConversationItemV2()) {
       children.map { getChildViewHolder(it) }.filterIsInstance<Multiselectable>()
     } else {
       children.filterIsInstance<Multiselectable>()
@@ -578,7 +579,7 @@ class MultiselectItemDecoration(
   }
 
   private fun RecyclerView.getInteractableChildren(): Sequence<InteractiveConversationElement> {
-    return if (FeatureFlags.useConversationFragmentV2()) {
+    return if (SignalStore.internalValues().useConversationItemV2()) {
       children.map { getChildViewHolder(it) }.filterIsInstance<InteractiveConversationElement>()
     } else {
       children.filterIsInstance<InteractiveConversationElement>()
@@ -586,7 +587,7 @@ class MultiselectItemDecoration(
   }
 
   private fun resolveMultiselectable(parent: RecyclerView, child: View): Multiselectable? {
-    return if (FeatureFlags.useConversationFragmentV2()) {
+    return if (SignalStore.internalValues().useConversationItemV2()) {
       parent.getChildViewHolder(child) as? Multiselectable
     } else {
       child as? Multiselectable

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationAdapterV2.kt

@@ -168,11 +168,6 @@ class ConversationAdapterV2(
     notifyItemRangeChanged(0, itemCount)
   }
 
-  /** [messagePosition] is one-based index and adapter is zero-based. */
-  fun getAdapterPositionForMessagePosition(messagePosition: Int): Int {
-    return messagePosition - 1
-  }
-
   fun getLastVisibleConversationMessage(position: Int): ConversationMessage? {
     return try {
       getConversationMessage(position) ?: getConversationMessage(position - 1)

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationFragment.kt

@@ -49,7 +49,6 @@ import androidx.core.app.ActivityOptionsCompat
 import androidx.core.content.ContextCompat
 import androidx.core.content.pm.ShortcutManagerCompat
 import androidx.core.view.ViewCompat
-import androidx.core.view.doOnNextLayout
 import androidx.core.view.doOnPreDraw
 import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
@@ -135,6 +134,7 @@ import org.thoughtcrime.securesms.conversation.AttachmentKeyboardButton
 import org.thoughtcrime.securesms.conversation.BadDecryptLearnMoreDialog
 import org.thoughtcrime.securesms.conversation.ConversationAdapter
 import org.thoughtcrime.securesms.conversation.ConversationBottomSheetCallback
+import org.thoughtcrime.securesms.conversation.ConversationData
 import org.thoughtcrime.securesms.conversation.ConversationHeaderView
 import org.thoughtcrime.securesms.conversation.ConversationIntents
 import org.thoughtcrime.securesms.conversation.ConversationIntents.ConversationScreenType
@@ -757,12 +757,7 @@ class ConversationFragment :
       .subscribeOn(Schedulers.io())
       .doOnSuccess { state ->
         SignalLocalMetrics.ConversationOpen.onDataLoaded()
-        binding.conversationItemRecycler.doOnNextLayout {
-          layoutManager.scrollToPositionWithOffset(
-            adapter.getAdapterPositionForMessagePosition(state.meta.getStartPosition()),
-            binding.conversationItemRecycler.height
-          )
-        }
+        moveToStartPosition(state.meta)
         conversationItemDecorations.setFirstUnreadCount(state.meta.unreadCount)
       }
       .flatMapObservable { it.items.data }
@@ -1411,9 +1406,8 @@ class ConversationFragment :
     )
 
     scrollToPositionDelegate = ScrollToPositionDelegate(
-      binding.conversationItemRecycler,
-      adapter::canJumpToPosition,
-      adapter::getAdapterPositionForMessagePosition
+      recyclerView = binding.conversationItemRecycler,
+      canJumpToPosition = adapter::canJumpToPosition
     )
 
     adapter.setPagingController(viewModel.pagingController)
@@ -2106,6 +2100,18 @@ class ConversationFragment :
 
   //region Scroll Handling
 
+  private fun moveToStartPosition(meta: ConversationData) {
+    scrollToPositionDelegate.requestScrollPosition(
+      position = meta.getStartPosition(),
+      smooth = true,
+      scrollStrategy = if (meta.shouldJumpToMessage()) {
+        jumpAndPulseScrollStrategy
+      } else {
+        ScrollToPositionDelegate.DefaultScrollStrategy
+      }
+    )
+  }
+
   /**
    * Requests a jump to the desired position, and ensures that the position desired will be visible on the screen.
    */

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationRepository.kt

@@ -298,16 +298,15 @@ class ConversationRepository(
     oldConversationRepository.markGiftBadgeRevealed(messageId)
   }
 
-  /** Quoted Message position is a zero-based index, so we need to convert it to 1-based */
   fun getQuotedMessagePosition(threadId: Long, quote: Quote): Single<Int> {
     return Single.fromCallable {
-      SignalDatabase.messages.getQuotedMessagePosition(threadId, quote.id, quote.author) + 1
+      SignalDatabase.messages.getQuotedMessagePosition(threadId, quote.id, quote.author)
     }.subscribeOn(Schedulers.io())
   }
 
   fun getMessageResultPosition(threadId: Long, messageResult: MessageResult): Single<Int> {
     return Single.fromCallable {
-      SignalDatabase.messages.getMessagePositionInConversation(threadId, messageResult.receivedTimestampMs) + 1
+      SignalDatabase.messages.getMessagePositionInConversation(threadId, messageResult.receivedTimestampMs)
     }.subscribeOn(Schedulers.io())
   }