android: Add button to use global driver value

src/android/app/src/main/java/org/yuzu/yuzu_emu/adapters/DriverAdapter.kt

@@ -8,6 +8,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import org.yuzu.yuzu_emu.databinding.CardDriverOptionBinding
+import org.yuzu.yuzu_emu.features.settings.model.StringSetting
 import org.yuzu.yuzu_emu.model.Driver
 import org.yuzu.yuzu_emu.model.DriverViewModel
 import org.yuzu.yuzu_emu.viewholder.AbstractViewHolder
@@ -27,13 +28,17 @@ class DriverAdapter(private val driverViewModel: DriverViewModel) :
             binding.apply {
                 radioButton.isChecked = model.selected
                 root.setOnClickListener {
-                    selectItem(bindingAdapterPosition) { driverViewModel.onDriverSelected(it) }
+                    selectItem(bindingAdapterPosition) {
+                        driverViewModel.onDriverSelected(it)
+                        driverViewModel.showClearButton(!StringSetting.DRIVER_PATH.global)
+                    }
                 }
                 buttonDelete.setOnClickListener {
                     removeSelectableItem(
                         bindingAdapterPosition
                     ) { removedPosition: Int, selectedPosition: Int ->
                         driverViewModel.onDriverRemoved(removedPosition, selectedPosition)
+                        driverViewModel.showClearButton(!StringSetting.DRIVER_PATH.global)
                     }
                 }
 

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/DriverManagerFragment.kt

@@ -3,6 +3,7 @@
 
 package org.yuzu.yuzu_emu.fragments
 
+import android.annotation.SuppressLint
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -13,20 +14,26 @@ import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
 import androidx.navigation.findNavController
 import androidx.navigation.fragment.navArgs
 import androidx.recyclerview.widget.GridLayoutManager
 import com.google.android.material.transition.MaterialSharedAxis
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.yuzu.yuzu_emu.R
 import org.yuzu.yuzu_emu.adapters.DriverAdapter
 import org.yuzu.yuzu_emu.databinding.FragmentDriverManagerBinding
+import org.yuzu.yuzu_emu.features.settings.model.StringSetting
 import org.yuzu.yuzu_emu.model.Driver.Companion.toDriver
 import org.yuzu.yuzu_emu.model.DriverViewModel
 import org.yuzu.yuzu_emu.model.HomeViewModel
 import org.yuzu.yuzu_emu.utils.FileUtil
 import org.yuzu.yuzu_emu.utils.GpuDriverHelper
+import org.yuzu.yuzu_emu.utils.NativeConfig
 import java.io.File
 import java.io.IOException
 
@@ -55,12 +62,43 @@ class DriverManagerFragment : Fragment() {
         return binding.root
     }
 
+    // This is using the correct scope, lint is just acting up
+    @SuppressLint("UnsafeRepeatOnLifecycleDetector")
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         homeViewModel.setNavigationVisibility(visible = false, animated = true)
         homeViewModel.setStatusBarShadeVisibility(visible = false)
 
         driverViewModel.onOpenDriverManager(args.game)
+        if (NativeConfig.isPerGameConfigLoaded()) {
+            binding.toolbarDrivers.inflateMenu(R.menu.menu_driver_manager)
+            driverViewModel.showClearButton(!StringSetting.DRIVER_PATH.global)
+            binding.toolbarDrivers.setOnMenuItemClickListener {
+                when (it.itemId) {
+                    R.id.menu_driver_clear -> {
+                        StringSetting.DRIVER_PATH.global = true
+                        driverViewModel.updateDriverList()
+                        (binding.listDrivers.adapter as DriverAdapter)
+                            .replaceList(driverViewModel.driverList.value)
+                        driverViewModel.showClearButton(false)
+                        true
+                    }
+
+                    else -> false
+                }
+            }
+
+            viewLifecycleOwner.lifecycleScope.apply {
+                launch {
+                    repeatOnLifecycle(Lifecycle.State.STARTED) {
+                        driverViewModel.showClearButton.collect {
+                            binding.toolbarDrivers.menu
+                                .findItem(R.id.menu_driver_clear).isVisible = it
+                        }
+                    }
+                }
+            }
+        }
 
         if (!driverViewModel.isInteractionAllowed.value) {
             DriversLoadingDialogFragment().show(
@@ -168,6 +206,7 @@ class DriverManagerFragment : Fragment() {
                             val adapter = binding.listDrivers.adapter as DriverAdapter
                             adapter.addItem(driverData.toDriver())
                             adapter.selectItem(adapter.currentList.indices.last)
+                            driverViewModel.showClearButton(!StringSetting.DRIVER_PATH.global)
                             binding.listDrivers
                                 .smoothScrollToPosition(adapter.currentList.indices.last)
                         }

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/DriverViewModel.kt

@@ -9,6 +9,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
@@ -46,6 +47,9 @@ class DriverViewModel : ViewModel() {
     private val _selectedDriverTitle = MutableStateFlow("")
     val selectedDriverTitle: StateFlow<String> get() = _selectedDriverTitle
 
+    private val _showClearButton = MutableStateFlow(false)
+    val showClearButton = _showClearButton.asStateFlow()
+
     private val driversToDelete = mutableListOf<String>()
 
     init {
@@ -60,7 +64,7 @@ class DriverViewModel : ViewModel() {
         _areDriversLoading.value = false
     }
 
-    private fun updateDriverList() {
+    fun updateDriverList() {
         val selectedDriver = GpuDriverHelper.customDriverSettingData
         val newDriverList = mutableListOf(
             Driver(
@@ -81,6 +85,10 @@ class DriverViewModel : ViewModel() {
         updateDriverList()
     }
 
+    fun showClearButton(value: Boolean) {
+        _showClearButton.value = value
+    }
+
     fun onDriverSelected(position: Int) {
         if (position == 0) {
             StringSetting.DRIVER_PATH.setString("")

src/android/app/src/main/res/menu/menu_driver_manager.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/menu_driver_clear"
+        android:icon="@drawable/ic_clear"
+        android:title="@string/clear"
+        app:showAsAction="always" />
+
+</menu>