Render debug info screen with Jetpack Compose.

app/build.gradle

@@ -217,6 +217,14 @@ android {
             minHeapSize = "1024m"
         }
     }
+
+    buildFeatures {
+        compose true
+    }
+
+    composeOptions {
+        kotlinCompilerExtensionVersion = Versions.androidx_compose
+    }
 }
 
 android.applicationVariants.all { variant ->
@@ -496,6 +504,10 @@ dependencies {
     implementation Deps.mozilla_lib_dataprotect
     debugImplementation Deps.leakcanary
 
+    implementation Deps.androidx_compose_ui
+    implementation Deps.androidx_compose_ui_tooling
+    implementation Deps.androidx_compose_foundation
+    implementation Deps.androidx_compose_material
     implementation Deps.androidx_legacy
     implementation Deps.androidx_biometric
     implementation Deps.androidx_paging

app/src/main/java/org/mozilla/fenix/components/Components.kt

@@ -7,6 +7,8 @@ package org.mozilla.fenix.components
 import android.app.Application
 import android.content.Context
 import android.content.Intent
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
 import androidx.core.net.toUri
 import com.google.android.play.core.review.ReviewManagerFactory
 import mozilla.components.feature.addons.AddonManager
@@ -25,6 +27,7 @@ import org.mozilla.fenix.R
 import org.mozilla.fenix.autofill.AutofillConfirmActivity
 import org.mozilla.fenix.autofill.AutofillSearchActivity
 import org.mozilla.fenix.autofill.AutofillUnlockActivity
+import org.mozilla.fenix.ext.components
 import org.mozilla.fenix.ext.settings
 import org.mozilla.fenix.perf.AppStartReasonProvider
 import org.mozilla.fenix.perf.StartupActivityLog
@@ -173,3 +176,10 @@ class Components(private val context: Context) {
     val startupActivityLog by lazyMonitored { StartupActivityLog() }
     val startupStateProvider by lazyMonitored { StartupStateProvider(startupActivityLog, appStartReasonProvider) }
 }
+
+/**
+ * Returns the [Components] object from within a [Composable].
+ */
+val components: Components
+    @Composable
+    get() = LocalContext.current.components

app/src/main/java/org/mozilla/fenix/settings/SecretDebugSettingsFragment.kt

@@ -5,30 +5,65 @@
 package org.mozilla.fenix.settings
 
 import android.os.Bundle
-import androidx.preference.Preference
-import androidx.preference.PreferenceFragmentCompat
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.ComposeView
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import androidx.fragment.app.Fragment
 import org.mozilla.fenix.R
-import org.mozilla.fenix.ext.requireComponents
+import org.mozilla.fenix.components.components
 import org.mozilla.fenix.ext.showToolbar
 
-class SecretDebugSettingsFragment : PreferenceFragmentCompat() {
+class SecretDebugSettingsFragment : Fragment() {
 
     override fun onResume() {
         super.onResume()
+
         showToolbar(getString(R.string.preferences_debug_info))
     }
 
-    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
-        setPreferencesFromResource(R.xml.secret_info_settings_preferences, rootKey)
-
-        val store = requireComponents.core.store
-
-        requirePreference<Preference>(R.string.pref_key_search_region_home).apply {
-            summary = store.state.search.region?.home ?: "Unknown"
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        return ComposeView(requireContext()).apply {
+            setContent { DebugInfo() }
         }
+    }
+}
 
-        requirePreference<Preference>(R.string.pref_key_search_region_current).apply {
-            summary = store.state.search.region?.current ?: "Unknown"
-        }
+@Composable
+private fun DebugInfo() {
+    val store = components.core.store
+
+    Column(
+        modifier = Modifier.padding(8.dp)
+    ) {
+        Text(
+            text = stringResource(R.string.debug_info_region_home),
+            style = MaterialTheme.typography.h6,
+            modifier = Modifier.padding(4.dp)
+        )
+        Text(
+            text = store.state.search.region?.home ?: "Unknown",
+            modifier = Modifier.padding(4.dp))
+        Text(
+            text = stringResource(R.string.debug_info_region_current),
+            style = MaterialTheme.typography.h6,
+            modifier = Modifier.padding(4.dp)
+        )
+        Text(
+            text = store.state.search.region?.current ?: "Unknown",
+            modifier = Modifier.padding(4.dp)
+        )
     }
 }

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

@@ -279,8 +279,6 @@
 
     <!-- Secret Info Setting Keys -->
     <string name="pref_key_secret_debug_info" translatable="false">pref_key_secret_debug_info</string>
-    <string name="pref_key_search_region_home" translatable="false">pref_key_search_region_home</string>
-    <string name="pref_key_search_region_current" translatable="false">pref_key_search_region_current</string>
 
     <!-- Secret Settings -->
     <string name="pref_key_show_address_feature" translatable="false">pref_key_show_address_feature</string>

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

@@ -73,7 +73,6 @@
 
     <!-- Secret debug info strings -->
     <string name="debug_info_telemetry_title" translatable="false">Telemetry</string>
-    <string name="debug_info_search_title" translatable="false">Search</string>
     <string name="debug_info_region_home" translatable="false">Home region</string>
     <string name="debug_info_region_current" translatable="false">Current region</string>
 </resources>

app/src/main/res/xml/secret_info_settings_preferences.xml

@@ -1,20 +0,0 @@
-<?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/. -->
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <PreferenceCategory
-        android:title="@string/debug_info_search_title">
-        <Preference
-            android:key="@string/pref_key_search_region_home"
-            android:title="@string/debug_info_region_home"
-            android:enabled="false" />
-        <Preference
-            android:key="@string/pref_key_search_region_current"
-            android:title="@string/debug_info_region_current"
-            android:enabled="false" />
-    </PreferenceCategory>
-
-</PreferenceScreen>

buildSrc/src/main/java/Dependencies.kt

@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 object Versions {
-    const val kotlin = "1.5.20"
+    const val kotlin = "1.5.10"
     const val coroutines = "1.5.0"
 
     // These versions are linked: lint should be X+23.Y.Z of gradle_plugin version, according to:
@@ -17,6 +17,8 @@ object Versions {
     const val detekt = "1.17.1"
     const val jna = "5.6.0"
 
+    const val androidx_activity_compose = "1.3.0-rc02"
+    const val androidx_compose = "1.0.0-rc02"
     const val androidx_appcompat = "1.3.0"
     const val androidx_benchmark = "1.0.0"
     const val androidx_biometric = "1.1.0"
@@ -164,6 +166,12 @@ object Deps {
     const val sentry = "io.sentry:sentry-android:${Versions.sentry}"
     const val leakcanary = "com.squareup.leakcanary:leakcanary-android:${Versions.leakcanary}"
 
+    const val androidx_compose_ui = "androidx.compose.ui:ui:${Versions.androidx_compose}"
+    const val androidx_compose_ui_test = "androidx.compose.ui:ui-test-junit4:${Versions.androidx_compose}"
+    const val androidx_compose_ui_test_manifest = "androidx.compose.ui:ui-test-manifest:${Versions.androidx_compose}"
+    const val androidx_compose_ui_tooling = "androidx.compose.ui:ui-tooling:${Versions.androidx_compose}"
+    const val androidx_compose_foundation = "androidx.compose.foundation:foundation:${Versions.androidx_compose}"
+    const val androidx_compose_material = "androidx.compose.material:material:${Versions.androidx_compose}"
     const val androidx_annotation = "androidx.annotation:annotation:${Versions.androidx_annotation}"
     const val androidx_benchmark_junit4 = "androidx.benchmark:benchmark-junit4:${Versions.androidx_benchmark}"
     const val androidx_biometric = "androidx.biometric:biometric:${Versions.androidx_biometric}"