For #16397 - Fixes SignOutFragment crash and invisible button

app/src/main/java/org/mozilla/fenix/settings/account/SignOutFragment.kt

@@ -10,39 +10,36 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
-import androidx.fragment.app.DialogFragment
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import org.mozilla.fenix.addons.runIfFragmentIsAttached
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.findNavController
 import com.google.android.material.bottomsheet.BottomSheetBehavior
-import com.google.android.material.bottomsheet.BottomSheetDialogFragment
+import androidx.appcompat.app.AppCompatDialogFragment
 import kotlinx.android.synthetic.main.fragment_sign_out.view.*
 import kotlinx.coroutines.launch
 import mozilla.components.service.fxa.manager.FxaAccountManager
 import org.mozilla.fenix.R
 import org.mozilla.fenix.ext.requireComponents
 
-class SignOutFragment : BottomSheetDialogFragment() {
+class SignOutFragment : AppCompatDialogFragment() {
     private lateinit var accountManager: FxaAccountManager
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setStyle(DialogFragment.STYLE_NO_TITLE, R.style.FirefoxAccountsDialogStyle)
+        setStyle(STYLE_NO_TITLE, R.style.BottomSheet)
     }
 
-    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
-        val dialog = super.onCreateDialog(savedInstanceState)
-
-        dialog.setOnShowListener {
-            val bottomSheet = dialog.findViewById<View>(
-                com.google.android.material.R.id.design_bottom_sheet
-            ) as FrameLayout
-            val behavior = BottomSheetBehavior.from(bottomSheet)
-            behavior.state = BottomSheetBehavior.STATE_EXPANDED
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog =
+        BottomSheetDialog(requireContext(), this.theme).apply {
+            setOnShowListener {
+                val bottomSheet =
+                    findViewById<View>(com.google.android.material.R.id.design_bottom_sheet) as FrameLayout
+                val behavior = BottomSheetBehavior.from(bottomSheet)
+                behavior.state = BottomSheetBehavior.STATE_EXPANDED
+            }
         }
 
-        return dialog
-    }
-
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
@@ -63,13 +60,15 @@ class SignOutFragment : BottomSheetDialogFragment() {
         super.onViewCreated(view, savedInstanceState)
 
         view.signOutDisconnect.setOnClickListener {
-            viewLifecycleOwner.lifecycleScope.launch {
+            lifecycleScope.launch {
                 requireComponents
                     .backgroundServices.accountAbnormalities.userRequestedLogout()
                 accountManager.logout()
             }.invokeOnCompletion {
-                if (!findNavController().popBackStack(R.id.settingsFragment, false)) {
-                    dismiss()
+                runIfFragmentIsAttached {
+                    if (!findNavController().popBackStack(R.id.settingsFragment, false)) {
+                        dismiss()
+                    }
                 }
             }
         }

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

+<?xml version="1.0" encoding="utf-8"?>
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
@@ -15,24 +16,36 @@
         android:layout_width="0dp"
         android:layout_height="wrap_content"
         android:layout_marginTop="12dp"
-        app:drawableStartCompat="@drawable/ic_info"
         android:text="@string/sign_out_confirmation_message_2"
         android:textSize="16sp"
-        app:layout_constraintStart_toStartOf="parent"
+        app:drawableStartCompat="@drawable/ic_info"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
-    <Button
+    <com.google.android.material.button.MaterialButton
         android:id="@+id/signOutCancel"
-        style="@style/SitePermissionCancelButton"
+        style="@style/Widget.MaterialComponents.Button.TextButton"
+        android:layout_width="wrap_content"
+        android:layout_height="0dp"
+        android:letterSpacing="0"
+        android:padding="10dp"
+        android:scrollbars="none"
         android:text="@string/sign_out_cancel"
+        android:textAllCaps="false"
+        android:textColor="?primaryText"
+        android:textStyle="bold"
+        app:fontFamily="@font/metropolis_semibold"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@id/signOutDisconnect"
         app:layout_constraintTop_toBottomOf="@id/sign_out_message" />
 
     <com.google.android.material.button.MaterialButton
         android:id="@+id/signOutDisconnect"
-        style="@style/SitePermissionPrimaryButton"
+        style="@style/PositiveButton"
+        android:layout_width="wrap_content"
+        android:paddingStart="12dp"
+        android:paddingEnd="12dp"
         android:text="@string/sign_out_disconnect"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"

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

@@ -343,17 +343,6 @@
         <item name="fontFamily">@font/metropolis_semibold</item>
     </style>
 
-    <style name="SitePermissionCancelButton" parent="SitePermissionButton">
-        <item name="android:textColor">?accent</item>
-        <item name="android:backgroundTint">?foundation</item>
-    </style>
-
-    <style name="SitePermissionPrimaryButton" parent="SitePermissionButton">
-        <item name="android:background">@drawable/dialog_button_background</item>
-        <item name="android:textColor">?contrastText</item>
-        <item name="android:backgroundTint">?accent</item>
-    </style>
-
     <style name="DialogStyleBase" parent="NormalTheme">
         <item name="android:textAppearance">@style/TextAppearance.AppCompat</item>
         <item name="android:colorControlNormal">?accentHighContrast</item>
@@ -536,11 +525,6 @@
         <item name="fontFamily">@font/metropolis_semibold</item>
     </style>
 
-    <style name="FirefoxAccountsDialogStyle" parent="DialogStyleBase">
-        <item name="android:windowBackground">@drawable/scrim_background</item>
-        <item name="android:colorControlHighlight">@android:color/transparent</item>
-    </style>
-
     <style name="ShareDialogStyle" parent="DialogStyleBase"/>
 
     <style name="AboutItemText" parent="TextAppearance.MaterialComponents.Body2">