For #11342 - Fixes missing space for the FAB

app/src/main/java/org/mozilla/fenix/tabtray/TabTrayDialogFragment.kt

@@ -94,7 +94,10 @@ class TabTrayDialogFragment : AppCompatDialogFragment(), TabTrayInteractor {
     override fun onConfigurationChanged(newConfig: Configuration) {
         super.onConfigurationChanged(newConfig)
 
-        if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
+        val isLandscape = newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE
+        tabTrayView.setTopOffset(isLandscape)
+
+        if (isLandscape) {
             tabTrayView.expand()
         }
     }

app/src/main/java/org/mozilla/fenix/tabtray/TabTrayView.kt

@@ -104,7 +104,7 @@ class TabTrayView(
             expand()
         }
 
-        behavior.setExpandedOffset(view.context.resources.getDimension(R.dimen.tab_tray_top_offset).toInt())
+        setTopOffset(startingInLandscape)
 
         (view.tabsTray as? BrowserTabsTray)?.also { tray ->
             TabsTouchHelper(tray.tabsAdapter).attachToRecyclerView(tray)
@@ -199,6 +199,16 @@ class TabTrayView(
         }
     }
 
+    fun setTopOffset(landscape: Boolean) {
+        val topOffset = if (landscape) {
+            0
+        } else {
+            view.context.resources.getDimension(R.dimen.tab_tray_top_offset).toInt()
+        }
+
+        behavior.setExpandedOffset(topOffset)
+    }
+
     companion object {
         private const val DEFAULT_TAB_ID = 0
         private const val PRIVATE_TAB_ID = 1

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

@@ -7,5 +7,4 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/tabLayout"
     android:layout_height="match_parent"
-    android:layout_width="match_parent"
-    android:clipToPadding="false" />
+    android:layout_width="match_parent" />

app/src/main/res/values/styles.xml

@@ -560,6 +560,8 @@
     <style name="BottomSheetModal" parent="Widget.Design.BottomSheet.Modal">
         <item name="shapeAppearance">@style/BottomSheetShapeAppearance</item>
         <item name="behavior_fitToContents">false</item>
+        <item name="behavior_expandedOffset">80</item>
+        <item name="behavior_skipCollapsed">true</item>
     </style>
 
     <style name="TabTrayFab" parent="Widget.MaterialComponents.ExtendedFloatingActionButton">