From ca4068bf321ebde074680a5c8bc628a3ed8c1576 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartu=20=C3=96zen?= <git@bartuzen.dev>
Date: Wed, 2 Aug 2023 08:26:08 +0300
Subject: [PATCH] Add fab to jump to top and bottom of torrent list

---
 .../qbitcontroller/ui/main/MainActivity.kt    | 24 ++++++++++++++++
 .../ui/torrentlist/TorrentListFragment.kt     | 28 +++++++++++++++++++
 app/src/main/res/drawable/ic_arrow_down.xml   | 10 +++++++
 app/src/main/res/layout/activity_main.xml     | 11 ++++++++
 4 files changed, 73 insertions(+)
 create mode 100644 app/src/main/res/drawable/ic_arrow_down.xml

diff --git a/app/src/main/java/dev/bartuzen/qbitcontroller/ui/main/MainActivity.kt b/app/src/main/java/dev/bartuzen/qbitcontroller/ui/main/MainActivity.kt
index debae62a2..8da5b2ca6 100755
--- a/app/src/main/java/dev/bartuzen/qbitcontroller/ui/main/MainActivity.kt
+++ b/app/src/main/java/dev/bartuzen/qbitcontroller/ui/main/MainActivity.kt
@@ -8,12 +8,14 @@ import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
 import android.view.View
+import android.view.animation.OvershootInterpolator
 import androidx.activity.OnBackPressedCallback
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.activity.viewModels
 import androidx.appcompat.app.ActionBarDrawerToggle
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.MenuProvider
+import androidx.core.view.ViewCompat
 import androidx.drawerlayout.widget.DrawerLayout.DrawerListener
 import androidx.fragment.app.commit
 import androidx.recyclerview.widget.ConcatAdapter
@@ -169,6 +171,7 @@ class MainActivity : AppCompatActivity() {
                 if (serverConfig != null) {
                     supportActionBar?.subtitle = null
 
+                    binding.fab.setOnClickListener(null)
                     supportFragmentManager.commit {
                         setReorderingAllowed(true)
                         val fragment = TorrentListFragment(serverConfig.id)
@@ -179,6 +182,7 @@ class MainActivity : AppCompatActivity() {
                     if (currentFragment != null) {
                         supportActionBar?.subtitle = null
 
+                        binding.fab.setOnClickListener(null)
                         supportFragmentManager.commit {
                             setReorderingAllowed(true)
                             remove(currentFragment)
@@ -238,6 +242,26 @@ class MainActivity : AppCompatActivity() {
         binding.recyclerDrawer.adapter = drawerAdapter
     }
 
+    fun setFabListener(block: () -> Boolean?) {
+        binding.fab.setOnClickListener {
+            val isMoveToTop = block()
+            if (isMoveToTop == true) {
+                binding.layoutAppBar.setExpanded(true, true)
+            } else if (isMoveToTop == false) {
+                binding.layoutAppBar.setExpanded(false, true)
+            }
+        }
+    }
+
+    fun rotateFab(isMoveToTop: Boolean) {
+        ViewCompat.animate(binding.fab)
+            .rotation(if (isMoveToTop) 0f else 180f)
+            .withLayer()
+            .setDuration(300)
+            .setInterpolator(OvershootInterpolator())
+            .start()
+    }
+
     private fun requestNotificationPermission() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
             if (!shouldShowRequestPermissionRationale(Manifest.permission.POST_NOTIFICATIONS)) {
diff --git a/app/src/main/java/dev/bartuzen/qbitcontroller/ui/torrentlist/TorrentListFragment.kt b/app/src/main/java/dev/bartuzen/qbitcontroller/ui/torrentlist/TorrentListFragment.kt
index 44a2b5bd3..664d1d223 100755
--- a/app/src/main/java/dev/bartuzen/qbitcontroller/ui/torrentlist/TorrentListFragment.kt
+++ b/app/src/main/java/dev/bartuzen/qbitcontroller/ui/torrentlist/TorrentListFragment.kt
@@ -649,6 +649,34 @@ class TorrentListFragment() : Fragment(R.layout.fragment_torrent_list) {
             )
         }
 
+        var isMoveToTop = false
+
+        parentActivity.setFabListener {
+            if (adapter.itemCount > 0) {
+                parentActivity.rotateFab(isMoveToTop)
+                if (isMoveToTop) {
+                    binding.recyclerTorrentList.smoothScrollToPosition(0)
+                } else {
+                    binding.recyclerTorrentList.smoothScrollToPosition(adapter.itemCount - 1)
+                }
+                isMoveToTop = !isMoveToTop
+                !isMoveToTop
+            } else {
+                null
+            }
+        }
+
+        binding.recyclerTorrentList.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                val layoutManager = binding.recyclerTorrentList.layoutManager as LinearLayoutManager
+                val newIsMoveToTop = layoutManager.findFirstVisibleItemPosition() != 0
+
+                if (isMoveToTop != newIsMoveToTop) {
+                    isMoveToTop = newIsMoveToTop
+                }
+            }
+        })
+
         binding.swipeRefresh.setOnRefreshListener {
             viewModel.refreshMainData(serverId)
         }
diff --git a/app/src/main/res/drawable/ic_arrow_down.xml b/app/src/main/res/drawable/ic_arrow_down.xml
new file mode 100644
index 000000000..68fd4058e
--- /dev/null
+++ b/app/src/main/res/drawable/ic_arrow_down.xml
@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M7.41,8.59L12,13.17l4.59,-4.58L18,10l-6,6 -6,-6 1.41,-1.41z" />
+</vector>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 8ff3f7ce5..00f66326e 100755
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -12,6 +12,7 @@
         android:layout_height="match_parent">
 
         <com.google.android.material.appbar.AppBarLayout
+            android:id="@+id/layout_app_bar"
             android:layout_width="match_parent"
             android:layout_height="wrap_content">
 
@@ -50,6 +51,16 @@
             android:visibility="gone"
             app:layout_behavior="@string/appbar_scrolling_view_behavior" />
 
+        <com.google.android.material.floatingactionbutton.FloatingActionButton
+            android:id="@+id/fab"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="bottom|end"
+            android:layout_margin="16dp"
+            android:src="@drawable/ic_arrow_down"
+            app:tint="#000000"
+            tools:ignore="ContentDescription" />
+
     </androidx.coordinatorlayout.widget.CoordinatorLayout>
 
     <com.google.android.material.navigation.NavigationView