From d16fc2e44606a352f9f9dec76855ba81da0c8823 Mon Sep 17 00:00:00 2001
From: Alexander Capehart <alex@oxycblt.org>
Date: Thu, 29 Dec 2022 13:39:31 -0700
Subject: [PATCH] queue: re-add adaptive divider visibility

Re-add the adaptive divider functionality that was accidentally removed prior.
---
 .github/ISSUE_TEMPLATE/bug-crash-report.yml   |  2 +-
 .../auxio/playback/queue/QueueFragment.kt     | 20 +++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/.github/ISSUE_TEMPLATE/bug-crash-report.yml b/.github/ISSUE_TEMPLATE/bug-crash-report.yml
index 6f0519f62..0faf9621c 100644
--- a/.github/ISSUE_TEMPLATE/bug-crash-report.yml
+++ b/.github/ISSUE_TEMPLATE/bug-crash-report.yml
@@ -1,5 +1,5 @@
 name: Bug/Crash Report
-description: File a bug report
+description: Report a problem
 labels: ["bug"]
 assignees:
   - OxygenCobalt
diff --git a/app/src/main/java/org/oxycblt/auxio/playback/queue/QueueFragment.kt b/app/src/main/java/org/oxycblt/auxio/playback/queue/QueueFragment.kt
index 9dfbc9962..b86db473e 100644
--- a/app/src/main/java/org/oxycblt/auxio/playback/queue/QueueFragment.kt
+++ b/app/src/main/java/org/oxycblt/auxio/playback/queue/QueueFragment.kt
@@ -19,6 +19,7 @@ package org.oxycblt.auxio.playback.queue
 
 import android.os.Bundle
 import android.view.LayoutInflater
+import androidx.core.view.isInvisible
 import androidx.fragment.app.activityViewModels
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -54,6 +55,18 @@ class QueueFragment : ViewBindingFragment<FragmentQueueBinding>(), QueueAdapter.
             touchHelper.attachToRecyclerView(this)
         }
 
+        // Sometimes the scroll can change without the listener being updated, so we also
+        // check for relayout events.
+        binding.queueRecycler.apply {
+            addOnLayoutChangeListener { _, _, _, _, _, _, _, _, _ -> updateDivider() }
+            addOnScrollListener(
+                object : RecyclerView.OnScrollListener() {
+                    override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                        updateDivider()
+                    }
+                })
+        }
+
         // --- VIEWMODEL SETUP ----
         collectImmediately(
             queueModel.queue, queueModel.index, playbackModel.isPlaying, ::updateQueue)
@@ -73,6 +86,13 @@ class QueueFragment : ViewBindingFragment<FragmentQueueBinding>(), QueueAdapter.
         touchHelper.startDrag(viewHolder)
     }
 
+    private fun updateDivider() {
+        val binding = requireBinding()
+        binding.queueDivider.isInvisible =
+            (binding.queueRecycler.layoutManager as LinearLayoutManager)
+                .findFirstCompletelyVisibleItemPosition() < 1
+    }
+
     private fun updateQueue(queue: List<Song>, index: Int, isPlaying: Boolean) {
         val binding = requireBinding()