feat(customselector): improve RecyclerView edge-to-edge inset handling

It allows the last item to sits above the navigation bar while preserving edge-to-edge appearance.

app/src/main/java/fr/free/nrw/commons/customselector/ui/selector/CustomSelectorActivity.kt

@@ -54,9 +54,10 @@ import fr.free.nrw.commons.databinding.CustomSelectorBottomLayoutBinding
 import fr.free.nrw.commons.databinding.CustomSelectorToolbarBinding
 import fr.free.nrw.commons.media.ZoomableActivity
 import fr.free.nrw.commons.theme.BaseActivity
-import fr.free.nrw.commons.utils.applyEdgeToEdgeAllInsets
 import fr.free.nrw.commons.upload.FileUtilsWrapper
 import fr.free.nrw.commons.utils.CustomSelectorUtils
+import fr.free.nrw.commons.utils.applyEdgeToEdgeBottomPaddingInsets
+import fr.free.nrw.commons.utils.applyEdgeToEdgeTopInsets
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
@@ -199,7 +200,8 @@ class CustomSelectorActivity :
                         .fillMaxWidth(),
             )
         }
-        applyEdgeToEdgeAllInsets(binding.root)
+        applyEdgeToEdgeTopInsets(toolbarBinding.toolbarLayout)
+        bottomSheetBinding.bottomLayout.applyEdgeToEdgeBottomPaddingInsets()
         val view = binding.root
         setContentView(view)
 

app/src/main/java/fr/free/nrw/commons/customselector/ui/selector/FolderFragment.kt

@@ -18,6 +18,7 @@ import fr.free.nrw.commons.databinding.FragmentCustomSelectorBinding
 import fr.free.nrw.commons.di.CommonsDaggerSupportFragment
 import fr.free.nrw.commons.media.MediaClient
 import fr.free.nrw.commons.upload.FileProcessor
+import fr.free.nrw.commons.utils.applyEdgeToEdgeBottomPaddingInsets
 import javax.inject.Inject
 
 /**
@@ -99,6 +100,7 @@ class FolderFragment : CommonsDaggerSupportFragment() {
         selectorRV = binding?.selectorRv
         loader = binding?.loader
         with(binding?.selectorRv) {
+            this?.applyEdgeToEdgeBottomPaddingInsets()
             this?.layoutManager = gridLayoutManager
             this?.setHasFixedSize(true)
             this?.adapter = folderAdapter

app/src/main/java/fr/free/nrw/commons/customselector/ui/selector/ImageFragment.kt

@@ -41,6 +41,7 @@ import fr.free.nrw.commons.media.MediaClient
 import fr.free.nrw.commons.theme.BaseActivity
 import fr.free.nrw.commons.upload.FileProcessor
 import fr.free.nrw.commons.upload.FileUtilsWrapper
+import fr.free.nrw.commons.utils.applyEdgeToEdgeBottomPaddingInsets
 import io.reactivex.schedulers.Schedulers
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asStateFlow
@@ -217,6 +218,7 @@ class ImageFragment :
         imageAdapter.setSingleSelection(singleSelection)
         gridLayoutManager = GridLayoutManager(context, getSpanCount())
         with(binding?.selectorRv) {
+            this?.applyEdgeToEdgeBottomPaddingInsets()
             this?.layoutManager = gridLayoutManager
             this?.setHasFixedSize(true)
             this?.adapter = imageAdapter

app/src/main/java/fr/free/nrw/commons/utils/EdgeToEdgeUtils.kt

@@ -9,6 +9,7 @@ import androidx.core.view.marginLeft
 import androidx.core.view.marginRight
 import androidx.core.view.marginTop
 import androidx.core.view.updateLayoutParams
+import androidx.core.view.updatePadding
 import fr.free.nrw.commons.R
 
 fun View.applyEdgeToEdgeInsets(
@@ -65,6 +66,38 @@ fun View.applyEdgeToEdgeInsets(
     }
 }
 
+fun View.applyEdgeToEdgeTopPaddingInsets(
+    typeMask: Int = WindowInsetsCompat.Type.systemBars(),
+) {
+    ViewCompat.setOnApplyWindowInsetsListener(this) { view, windowInsets ->
+        val insets = windowInsets.getInsets(typeMask)
+
+        view.updatePadding(
+            left = insets.left,
+            right = insets.right,
+            top = insets.top
+        )
+
+        WindowInsetsCompat.CONSUMED
+    }
+}
+
+fun View.applyEdgeToEdgeBottomPaddingInsets(
+    typeMask: Int = WindowInsetsCompat.Type.systemBars(),
+) {
+    ViewCompat.setOnApplyWindowInsetsListener(this) { view, windowInsets ->
+        val insets = windowInsets.getInsets(typeMask)
+
+        view.updatePadding(
+            left = insets.left,
+            right = insets.right,
+            bottom = insets.bottom
+        )
+
+        WindowInsetsCompat.CONSUMED
+    }
+}
+
 fun applyEdgeToEdgeAllInsets(view: View) = view.applyEdgeToEdgeInsets { insets ->
     leftMargin = insets.left
     rightMargin = insets.right

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

@@ -34,6 +34,7 @@
     app:layout_constraintEnd_toEndOf="parent"
     app:layout_constraintStart_toStartOf="parent"
     app:layout_constraintTop_toBottomOf="@id/switchWidget"
+    android:clipToPadding="false"
     />
 
   <TextView