Bug 1814192 - Set the delete menu item to inactive when there is no browsing data

app/src/main/java/org/mozilla/fenix/library/history/HistoryFragment.kt

@@ -17,6 +17,7 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.RadioGroup
 import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
 import androidx.core.view.MenuProvider
 import androidx.fragment.app.DialogFragment
 import androidx.lifecycle.Lifecycle
@@ -64,6 +65,8 @@ class HistoryFragment : LibraryPageFragment<History>(), UserInteractionHandler,
     private lateinit var historyInteractor: HistoryInteractor
     private lateinit var historyProvider: DefaultPagedHistoryProvider
 
+    private var deleteHistory: MenuItem? = null
+
     private var history: Flow<PagingData<History>> = Pager(
         PagingConfig(PAGE_SIZE),
         null,
@@ -190,6 +193,7 @@ class HistoryFragment : LibraryPageFragment<History>(), UserInteractionHandler,
 
         consumeFrom(historyStore) {
             historyView.update(it)
+            updateDeleteMenuItemView(!it.isEmpty)
         }
 
         requireContext().components.appStore.flowScoped(viewLifecycleOwner) { flow ->
@@ -207,6 +211,16 @@ class HistoryFragment : LibraryPageFragment<History>(), UserInteractionHandler,
         }
     }
 
+    private fun updateDeleteMenuItemView(isEnabled: Boolean) {
+        val closedTabs = requireContext().components.core.store.state.closedTabs.size
+        if (!isEnabled && closedTabs == 0) {
+            deleteHistory?.isEnabled = false
+            deleteHistory?.icon?.setTint(
+                ContextCompat.getColor(requireContext(), R.color.fx_mobile_icon_color_disabled),
+            )
+        }
+    }
+
     override fun onResume() {
         super.onResume()
 
@@ -223,6 +237,8 @@ class HistoryFragment : LibraryPageFragment<History>(), UserInteractionHandler,
                 }
         } else {
             inflater.inflate(R.menu.history_menu, menu)
+            deleteHistory = menu.findItem(R.id.history_delete)
+            updateDeleteMenuItemView(!historyStore.state.isEmpty)
         }
     }