stop refresh entire page on grid change / hide scroll to top button

app/src/main/java/ani/dantotsu/download/manga/OfflineMangaAdapter.kt

@@ -21,6 +21,7 @@ class OfflineMangaAdapter(
     private val inflater: LayoutInflater =
         context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
     private var originalItems: List<OfflineMangaModel> = items
+    private var style = context.getSharedPreferences("Dantotsu", Context.MODE_PRIVATE).getInt("offline_view", 0)
 
     override fun getCount(): Int {
         return items.size
@@ -37,15 +38,10 @@ class OfflineMangaAdapter(
     @SuppressLint("SetTextI18n")
     override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
 
-        val style = context.getSharedPreferences("Dantotsu", Context.MODE_PRIVATE).getInt("offline_view", 0)
+        val view: View = convertView ?: when(style) {
-
+            0 -> inflater.inflate(R.layout.item_media_large, parent, false) // large view
-        var view = convertView
+            1 -> inflater.inflate(R.layout.item_media_compact, parent, false) // compact view
-
+            else -> inflater.inflate(R.layout.item_media_compact, parent, false) // compact view
-        if (view == null && style == 0 ) {
-            view = inflater.inflate(R.layout.item_media_large, parent, false) // large view
-        }
-        else if (view == null && style == 1){
-            view = inflater.inflate(R.layout.item_media_compact, parent, false) // compact view
         }
 
         val item = getItem(position) as OfflineMangaModel
@@ -69,7 +65,7 @@ class OfflineMangaAdapter(
         else if (style == 1){
             val readchapter = view.findViewById<TextView>(R.id.itemCompactUserProgress) // for compact view
             readchapter.text = item.readchapter
-            totalchapter.text = " | "+item.totalchapter
+            totalchapter.text = " | " + item.totalchapter
         }
 
         // Bind item data to the views
@@ -104,4 +100,9 @@ class OfflineMangaAdapter(
         this.originalItems = items
         notifyDataSetChanged()
     }
+
+    fun notifyNewGrid(){
+        style = context.getSharedPreferences("Dantotsu", Context.MODE_PRIVATE).getInt("offline_view", 0)
+        notifyDataSetChanged()
+    }
 }

app/src/main/java/ani/dantotsu/download/manga/OfflineMangaFragment.kt

@@ -15,6 +15,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.animation.OvershootInterpolator
+import android.widget.AbsListView
 import android.widget.AutoCompleteTextView
 import android.widget.GridView
 import android.widget.ImageView
@@ -128,7 +129,11 @@ class OfflineMangaFragment : Fragment(), OfflineMangaSearchListener {
             style = 0
             context?.getSharedPreferences("Dantotsu", Context.MODE_PRIVATE)?.edit()
                 ?.putInt("offline_view", style!!)?.apply()
-            recreate(requireActivity())
+            gridView.visibility = View.GONE
+            gridView = view.findViewById(R.id.gridView)
+            gridView.adapter = adapter
+            gridView.visibility = View.VISIBLE
+            adapter.notifyNewGrid()
 
         }
 
@@ -137,7 +142,11 @@ class OfflineMangaFragment : Fragment(), OfflineMangaSearchListener {
             style = 1
             context?.getSharedPreferences("Dantotsu", Context.MODE_PRIVATE)?.edit()
                 ?.putInt("offline_view", style!!)?.apply()
-            recreate(requireActivity())
+            gridView.visibility = View.GONE
+            gridView = view.findViewById(R.id.gridView1)
+            gridView.adapter = adapter
+            gridView.visibility = View.VISIBLE
+            adapter.notifyNewGrid()
         }
 
         gridView = if(style == 0) view.findViewById(R.id.gridView) else view.findViewById(R.id.gridView1)
@@ -229,9 +238,25 @@ class OfflineMangaFragment : Fragment(), OfflineMangaSearchListener {
         }
 
         scrollTop.setOnClickListener {
-            //TODO: scroll to top
+            gridView.smoothScrollToPosition(0)
         }
 
+        // Assuming 'scrollTop' is a view that you want to hide/show
+        scrollTop.visibility = View.GONE
+
+        gridView.setOnScrollListener(object : AbsListView.OnScrollListener {
+            override fun onScrollStateChanged(view: AbsListView, scrollState: Int) {
+                // Implement behavior for different scroll states if needed
+            }
+
+            override fun onScroll(view: AbsListView, firstVisibleItem: Int, visibleItemCount: Int, totalItemCount: Int) {
+                val first = view.getChildAt(0)
+                val visibility = first != null && first.top < -height
+                scrollTop.visibility = if (visibility) View.VISIBLE else View.GONE
+            }
+        })
+
+
     }
 
     override fun onResume() {

app/src/main/res/layout/fragment_manga_offline.xml

@@ -35,6 +35,7 @@
                     android:hint="@string/manga"
                     android:textColorHint="@color/bg_opp"
                     android:transitionName="@string/search"
+                    android:fontFamily="@font/poppins_bold"
                     app:boxBackgroundColor="?attr/colorPrimaryContainer"
                     app:boxCornerRadiusBottomEnd="28dp"
                     app:boxCornerRadiusBottomStart="28dp"