for #7584 - fix about libraries toolbar theme

fixes #7584 #13970

app/src/androidTest/java/org/mozilla/fenix/ui/robots/SettingsSubMenuAboutRobot.kt

@@ -222,7 +222,7 @@ private fun assertLibrariesUsed() {
         .check(matches(withEffectiveVisibility(ViewMatchers.Visibility.VISIBLE)))
         .perform(click())
 
-    onView(withId(R.id.toolbar)).check(matches(hasDescendant(withText(containsString("Firefox Preview | OSS Libraries")))))
+    onView(withId(R.id.navigationToolbar)).check(matches(hasDescendant(withText(containsString("Firefox Preview | OSS Libraries")))))
     Espresso.pressBack()
 }
 

app/src/main/java/org/mozilla/fenix/settings/about/AboutFragment.kt

@@ -12,6 +12,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.core.content.pm.PackageInfoCompat
 import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.DividerItemDecoration
 import kotlinx.android.synthetic.main.fragment_about.*
 import org.mozilla.fenix.BrowserDirection
@@ -167,8 +168,8 @@ class AboutFragment : Fragment(), AboutPageListener {
     }
 
     private fun openLibrariesPage() {
-        val intent = Intent(requireContext(), AboutLibrariesActivity::class.java)
-        startActivity(intent)
+        val navController = findNavController()
+        navController.navigate(R.id.action_aboutFragment_to_aboutLibrariesFragment)
     }
 
     override fun onAboutItemClicked(item: AboutItem) {

app/src/main/java/org/mozilla/fenix/settings/about/AboutLibrariesFragment.kt

@@ -7,12 +7,15 @@ package org.mozilla.fenix.settings.about
 import android.graphics.Typeface
 import android.os.Bundle
 import android.text.util.Linkify
+import android.view.View
 import android.widget.ArrayAdapter
 import android.widget.ListView
 import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
-import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import kotlinx.android.synthetic.main.fragment_about_libraries.view.*
 import org.mozilla.fenix.R
+import org.mozilla.fenix.ext.showToolbar
 import java.nio.charset.Charset
 import java.util.Locale
 
@@ -27,33 +30,24 @@ import java.util.Locale
  * such as AboutLibraries (https://github.com/mikepenz/AboutLibraries)
  * but we considered the risk of introducing such third-party dependency
  * to Fenix too high. Therefore, we use Google's gradle plugin to
- * extract the dependencies and their licenses, and this activity
+ * extract the dependencies and their licenses, and this fragment
  * to show the extracted licenses to the end-user.
  */
-class AboutLibrariesActivity : AppCompatActivity() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-
+class AboutLibrariesFragment : Fragment(R.layout.fragment_about_libraries) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         val appName = getString(R.string.app_name)
-        title = getString(R.string.open_source_licenses_title, appName)
-        setContentView(R.layout.about_libraries_activity)
-
-        setSupportActionBar(findViewById(R.id.toolbar))
-        supportActionBar?.setDisplayHomeAsUpEnabled(true)
-        supportActionBar?.setDisplayShowHomeEnabled(true)
-
-        setupLibrariesListView()
-    }
+        showToolbar(getString(R.string.open_source_licenses_title, appName))
 
-    override fun onSupportNavigateUp(): Boolean {
-        onBackPressed()
-        return true
+        setupLibrariesListView(view.about_libraries_listview)
     }
 
-    private fun setupLibrariesListView() {
+    private fun setupLibrariesListView(listView: ListView) {
         val libraries = parseLibraries()
-        val listView = findViewById<ListView>(R.id.about_libraries_listview)
-        listView.adapter = ArrayAdapter(this, android.R.layout.simple_list_item_1, libraries)
+        listView.adapter = ArrayAdapter(
+            listView.context,
+            android.R.layout.simple_list_item_1,
+            libraries
+        )
         listView.setOnItemClickListener { _, _, position, _ ->
             showLicenseDialog(libraries[position])
         }
@@ -95,7 +89,7 @@ class AboutLibrariesActivity : AppCompatActivity() {
     }
 
     private fun showLicenseDialog(libraryItem: LibraryItem) {
-        val dialog = AlertDialog.Builder(this)
+        val dialog = AlertDialog.Builder(requireContext())
             .setTitle(libraryItem.name)
             .setMessage(libraryItem.license)
             .create()

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

@@ -3,23 +3,16 @@
    - 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/. -->
 
-<RelativeLayout
+<LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/about_libraries"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:fillViewport="true"
-    tools:context="org.mozilla.fenix.settings.about.AboutLibrariesActivity">
-    <androidx.appcompat.widget.Toolbar
-        android:id="@+id/toolbar"
-        android:layout_width="match_parent"
-        android:layout_height="?attr/actionBarSize"
-        android:background="?attr/colorPrimary"
-        android:elevation="4dp"
-        android:theme="@style/ThemeOverlay.AppCompat.ActionBar" />
+    android:orientation="vertical"
+    tools:context="org.mozilla.fenix.settings.about.AboutLibrariesFragment">
     <ListView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:id="@+id/about_libraries_listview" />
-</RelativeLayout>
+</LinearLayout>

app/src/main/res/navigation/nav_graph.xml

@@ -587,7 +587,16 @@
 
     <fragment
         android:id="@+id/aboutFragment"
-        android:name="org.mozilla.fenix.settings.about.AboutFragment" />
+        android:name="org.mozilla.fenix.settings.about.AboutFragment"
+        tools:layout="@layout/fragment_about">
+        <action
+            android:id="@+id/action_aboutFragment_to_aboutLibrariesFragment"
+            app:destination="@id/aboutLibrariesFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right" />
+    </fragment>
     <fragment
         android:id="@+id/secretSettingsPreference"
         android:name="org.mozilla.fenix.settings.SecretSettingsFragment"
@@ -599,6 +608,10 @@
             android:name="crashIntent"
             app:argType="android.content.Intent" />
     </fragment>
+    <fragment
+        android:id="@+id/aboutLibrariesFragment"
+        android:name="org.mozilla.fenix.settings.about.AboutLibrariesFragment"
+        tools:layout="@layout/fragment_about_libraries" />
     <fragment
         android:id="@+id/customizationFragment"
         android:name="org.mozilla.fenix.settings.CustomizationFragment"

app/src/test/java/org/mozilla/fenix/settings/about/AboutLibrariesFragmentTest.kt

@@ -7,30 +7,34 @@ package org.mozilla.fenix.settings.about
 import android.widget.ListView
 import android.widget.TextView
 import org.junit.Assert.assertTrue
+import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.mozilla.fenix.R
+import org.mozilla.fenix.createAddedTestFragmentInNavHostActivity
 import org.mozilla.fenix.helpers.FenixRobolectricTestRunner
-import org.robolectric.Robolectric
 import org.robolectric.Shadows.shadowOf
 import org.robolectric.shadows.ShadowAlertDialog
 
 @RunWith(FenixRobolectricTestRunner::class)
-class AboutLibrariesActivityTest {
-    @Test
-    fun `activity should display licenses`() {
-        val activity = Robolectric.buildActivity(AboutLibrariesActivity::class.java).create().get()
-        val listView = activity.findViewById<ListView>(R.id.about_libraries_listview)
+class AboutLibrariesFragmentTest {
+    private lateinit var fragment: AboutLibrariesFragment
+    private lateinit var librariesListView: ListView
+
+    @Before
+    fun setup() {
+        fragment = createAddedTestFragmentInNavHostActivity { AboutLibrariesFragment() }
+        librariesListView = fragment.requireView().findViewById(R.id.about_libraries_listview)
+    }
 
-        assertTrue(0 < listView.count)
+    @Test
+    fun `fragment should display licenses`() {
+        assertTrue(0 < librariesListView.count)
     }
 
     @Test
     fun `item click should open license dialog`() {
-        val activity = Robolectric.buildActivity(AboutLibrariesActivity::class.java).create().get()
-
-        val listView = activity.findViewById<ListView>(R.id.about_libraries_listview)
-        val listViewShadow = shadowOf(listView)
+        val listViewShadow = shadowOf(librariesListView)
         listViewShadow.clickFirstItemContainingText("org.mozilla.geckoview:geckoview")
 
         val alertDialogShadow = ShadowAlertDialog.getLatestDialog()