Remote authenticator enrollment enrolling layout.

This flow will be included in Device Unlock settings with the
Fingerprint and Face Unlock.

Bug: b/293908453
Test: atest RemoteAuthEnrollEnrollingTest
Change-Id: I56c7fb2481ace359813c27e7538bec0baceffced

res/layout/remote_auth_enroll_enrolling.xml

@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2023 The Android Open Source Project
+
+    Licensed under the Apache License, Version 2.0 (the "License")
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+
+<com.google.android.setupdesign.GlifLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/setup_wizard_layout"
+    android:icon="@drawable/ic_lock"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:sucHeaderText="@string/security_settings_remoteauth_enroll_enrolling_title" >
+
+    <LinearLayout
+        style="@style/SudContentFrame"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:clipToPadding="false"
+        android:clipChildren="false">
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            style="@style/BiometricEnrollIntroTitle"
+            android:text="@string/security_settings_remoteauth_enroll_enrolling_list_heading" />
+
+        <ProgressBar
+            android:id="@+id/enrolling_list_progress_bar"
+            android:layout_width="@dimen/remoteauth_enrolling_progress_bar_size"
+            android:layout_height="@dimen/remoteauth_enrolling_progress_bar_size"
+            android:visibility="invisible"/>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/discovered_authenticator_list"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+        <TextView
+            style="@style/TextAppearance.ErrorText"
+            android:id="@+id/error_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_horizontal|bottom"
+            android:accessibilityLiveRegion="polite"
+            android:gravity="center"
+            android:visibility="invisible"/>
+
+    </LinearLayout>
+
+</com.google.android.setupdesign.GlifLayout>

res/layout/remote_auth_enrolling_authenticator_item.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2023 The Android Open Source Project
+
+    Licensed under the Apache License, Version 2.0 (the "License")
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/authenticator_item_layout"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginVertical="@dimen/remoteauth_enrolling_authenticator_vertical_margin"
+    android:minHeight="@dimen/remoteauth_touchable_area_minimum_span">
+
+    <TextView
+        android:id="@+id/discovered_authenticator_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="@dimen/remoteauth_enrolling_authenticator_horizontal_margin"
+        android:ellipsize="end"
+        android:maxLines="1"
+        app:layout_constrainedWidth="true"
+        app:layout_constraintHorizontal_bias="0"
+        app:layout_constraintHorizontal_chainStyle="spread_inside"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/authenticator_radio_button"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <ImageView
+        android:id="@+id/authenticator_radio_button"
+        android:layout_width="@dimen/remoteauth_icon_small_size"
+        android:layout_height="@dimen/remoteauth_icon_small_size"
+        android:background="@drawable/ic_radio_button_unchecked_black_24dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toEndOf="@id/discovered_authenticator_name"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

res/values/dimens.xml

@@ -183,8 +183,10 @@
     <dimen name="remoteauth_carousel_progress_margin">28dp</dimen>
     <dimen name="remoteauth_carousel_progress_circle_diameter">8dp</dimen>
     <dimen name="remoteauth_carousel_progress_circle_margin">4dp</dimen>
+    <dimen name="remoteauth_enrolling_authenticator_vertical_margin">12dp</dimen>
+    <dimen name="remoteauth_enrolling_authenticator_horizontal_margin">16dp</dimen>
+    <dimen name="remoteauth_enrolling_progress_bar_size">16dp</dimen>
     <dimen name="remoteauth_settings_top_margin">22dp</dimen>
-
     <dimen name="remoteauth_settings_device_horizontal_margin">16dp</dimen>
 
 

res/values/strings.xml

@@ -910,6 +910,15 @@
     <string name="security_settings_remoteauth_enroll_introduction_animation_tap_notification">Tap a notification</string>
     <!-- Subtitle for animation that explains users can unlock by swiping up on the lock screen [CHAR_LIMIT=NONE] -->
     <string name="security_settings_remoteauth_enroll_introduction_animation_swipe_up">Swipe up on the lock screen</string>
+    <!-- Strings for RemoteAuth enroll enrolling page -->
+    <!-- Title of the screen that allows users to choose from a list of available watches to enable the Watch Unlock feature [CHAR_LIMIT=45] -->
+    <string name="security_settings_remoteauth_enroll_enrolling_title">Choose your watch</string>
+    <!-- Heading text for the list of watches available for the Watch Unlock feature [CHAR_LIMIT=40] -->
+    <string name="security_settings_remoteauth_enroll_enrolling_list_heading">Available watches</string>
+    <!-- Button text to cancel enrollment [CHAR LIMIT=30] -->
+    <string name="security_settings_remoteauth_enroll_enrolling_disagree">Cancel</string>
+    <!-- Button text to start enrollment [CHAR LIMIT=30] -->
+    <string name="security_settings_remoteauth_enroll_enrolling_agree">Confirm</string>
     <!-- Strings for RemoteAuth enroll finish page -->
     <!-- Title of the dialog that shows when a paired watch has been set up successfully and can be used to unlock the phone [CHAR_LIMIT=45] -->
     <string name="security_settings_remoteauth_enroll_finish_title">You\u2019re all set!</string>

src/com/android/settings/remoteauth/enrolling/DiscoveredAuthenticatorUiState.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.remoteauth.enrolling
+
+/** UI state of a single discovered authenticator. */
+data class DiscoveredAuthenticatorUiState(
+    val name: String,
+    val isSelected: Boolean,
+    val onSelect: () -> Unit,
+)

src/com/android/settings/remoteauth/enrolling/EnrollmentUiState.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.remoteauth.enrolling
+
+/** The different states of the enrolling flow. */
+enum class EnrollmentUiState {
+    /** No enrollment is happening. */
+    NONE,
+
+    /** Searching for potential authenticators. */
+    FINDING_DEVICES,
+
+    /**
+     * An enrollment is in progress.
+     */
+    ENROLLING,
+
+    /** An enrollment has succeeded. */
+    SUCCESS,
+}

src/com/android/settings/remoteauth/enrolling/RemoteAuthEnrollEnrolling.kt

@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.remoteauth.enrolling
+
+import android.os.Bundle
+import android.view.View
+import android.widget.ProgressBar
+import android.widget.TextView
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
+
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+
+import com.android.settings.R
+import com.android.settings.remoteauth.RemoteAuthEnrollBase
+
+import com.google.android.setupcompat.template.FooterButton
+import kotlinx.coroutines.launch
+
+class RemoteAuthEnrollEnrolling :
+    RemoteAuthEnrollBase(
+        layoutResId = R.layout.remote_auth_enroll_enrolling,
+        glifLayoutId = R.id.setup_wizard_layout,
+    ) {
+    // TODO(b/293906345): Scope viewModel to navigation graph when implementing navigation.
+    private val viewModel = RemoteAuthEnrollEnrollingViewModel()
+    private val adapter = RemoteAuthEnrollEnrollingRecyclerViewAdapter()
+    private val progressBar by lazy {
+        view!!.findViewById<ProgressBar>(R.id.enrolling_list_progress_bar)
+    }
+    private val errorText by lazy { view!!.findViewById<TextView>(R.id.error_text) }
+    private val recyclerView by lazy {
+        view!!.findViewById<RecyclerView>(R.id.discovered_authenticator_list)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        // Set up adapter
+        recyclerView.layoutManager = LinearLayoutManager(context)
+        recyclerView.adapter = adapter
+
+        // Collect UIState and update UI on changes.
+        lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.STARTED) {
+                viewModel.uiState.collect {
+                    updateUi(it)
+                }
+            }
+        }
+    }
+
+    override fun onStart() {
+        super.onStart()
+        // Get list of discovered devices from viewModel.
+        viewModel.discoverDevices()
+    }
+
+    override fun initializePrimaryFooterButton(): FooterButton {
+        return FooterButton.Builder(requireContext())
+            .setText(R.string.security_settings_remoteauth_enroll_enrolling_agree)
+            .setListener(this::onPrimaryFooterButtonClick)
+            .setButtonType(FooterButton.ButtonType.NEXT)
+            .setTheme(com.google.android.setupdesign.R.style.SudGlifButton_Primary)
+            .build()
+    }
+
+    override fun initializeSecondaryFooterButton(): FooterButton? {
+        return FooterButton.Builder(requireContext())
+            .setText(R.string.security_settings_remoteauth_enroll_enrolling_disagree)
+            .setListener(this::onSecondaryFooterButtonClick)
+            .setButtonType(FooterButton.ButtonType.SKIP)
+            .setTheme(com.google.android.setupdesign.R.style.SudGlifButton_Secondary)
+            .build()
+    }
+
+    private fun onPrimaryFooterButtonClick(view: View) {
+        viewModel.registerAuthenticator()
+    }
+
+    private fun onSecondaryFooterButtonClick(view: View) {
+        // TODO(b/293906345): Wire up navigation
+    }
+
+    private fun updateUi(uiState: RemoteAuthEnrollEnrollingUiState) {
+        progressBar.visibility = View.INVISIBLE
+        primaryFooterButton.isEnabled = false
+        // TODO(b/290769765): Add unit tests for all this states.
+        when (uiState.enrollmentUiState) {
+            EnrollmentUiState.NONE -> {
+                adapter.uiStates = uiState.discoveredDeviceUiStates
+                primaryFooterButton.isEnabled = viewModel.isDeviceSelected()
+            }
+
+            EnrollmentUiState.FINDING_DEVICES -> {
+                progressBar.visibility = View.VISIBLE
+            }
+
+            EnrollmentUiState.ENROLLING -> {}
+            EnrollmentUiState.SUCCESS -> {
+                // TODO(b/293906345): Wire up navigation
+            }
+        }
+        if (uiState.errorMsg != null) {
+            errorText.visibility = View.VISIBLE
+            errorText.text = uiState.errorMsg
+        } else {
+            errorText.visibility = View.INVISIBLE
+            errorText.text = ""
+        }
+    }
+}

src/com/android/settings/remoteauth/enrolling/RemoteAuthEnrollEnrollingRecyclerViewAdapter.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.remoteauth.enrolling
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.android.settings.R
+
+class RemoteAuthEnrollEnrollingRecyclerViewAdapter :
+    RecyclerView.Adapter<RemoteAuthEnrollEnrollingRecyclerViewAdapter.ViewHolder>() {
+    var uiStates = listOf<DiscoveredAuthenticatorUiState>()
+        set(value) {
+            field = value
+            notifyDataSetChanged()
+        }
+
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.remote_auth_enrolling_authenticator_item, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(viewHolder: ViewHolder, position: Int) {
+        viewHolder.bind(uiStates[position])
+    }
+
+    override fun getItemCount() = uiStates.size
+
+    class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        private val titleTextView: TextView = view.findViewById(R.id.discovered_authenticator_name)
+        private val selectButton: ImageView = view.findViewById(R.id.authenticator_radio_button)
+        private val checkedDrawable =
+            view.context.getDrawable(R.drawable.ic_radio_button_checked_black_24dp)
+        private val uncheckedDrawable =
+            view.context.getDrawable(R.drawable.ic_radio_button_unchecked_black_24dp)
+
+        fun bind(discoveredAuthenticatorUiState: DiscoveredAuthenticatorUiState) {
+            titleTextView.text = discoveredAuthenticatorUiState.name
+            selectButton.background = if (discoveredAuthenticatorUiState.isSelected) {
+                checkedDrawable
+            } else {
+                uncheckedDrawable
+            }
+            selectButton.setOnClickListener { discoveredAuthenticatorUiState.onSelect() }
+        }
+    }
+}

src/com/android/settings/remoteauth/enrolling/RemoteAuthEnrollEnrollingUiState.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.remoteauth.enrolling
+
+/** UiState for full enrolling view. */
+data class RemoteAuthEnrollEnrollingUiState(
+    val discoveredDeviceUiStates: List<DiscoveredAuthenticatorUiState> = listOf(),
+    val enrollmentUiState: EnrollmentUiState = EnrollmentUiState.NONE,
+    // TODO(b/293906744): Change to error code in teamfood and add errors to strings.xml
+    val errorMsg: String? = null,
+)

src/com/android/settings/remoteauth/enrolling/RemoteAuthEnrollEnrollingViewModel.kt

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.remoteauth.enrolling
+
+import androidx.lifecycle.ViewModel
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import kotlin.properties.Delegates
+
+class RemoteAuthEnrollEnrollingViewModel : ViewModel() {
+    private val _uiState = MutableStateFlow(RemoteAuthEnrollEnrollingUiState())
+    val uiState: StateFlow<RemoteAuthEnrollEnrollingUiState> = _uiState.asStateFlow()
+
+    private var errorMessage: String? = null
+        set(value) {
+            field = value
+            _uiState.update { currentState ->
+                currentState.copy(
+                    errorMsg = value,
+                )
+            }
+        }
+
+    // TODO(b/293906744): Change to RemoteAuthManager.DiscoveredDevice.
+    private var selectedDevice: Any? by Delegates.observable(null) { _, _, _ -> discoverDevices() }
+
+
+    /** Returns if a device has been selected */
+    fun isDeviceSelected() = selectedDevice != null
+
+    /**
+     * Starts searching for nearby authenticators that are currently not enrolled. The devices
+     * and the state of the searching are both returned in uiState.
+     */
+    fun discoverDevices() {
+        _uiState.update { currentState ->
+            currentState.copy(enrollmentUiState = EnrollmentUiState.FINDING_DEVICES)
+        }
+
+        // TODO(b/293906744): Map RemoteAuthManager discovered devices to
+        // DiscoveredAuthenticatorUiState in viewModelScope.
+        val discoveredDeviceUiStates = listOf<DiscoveredAuthenticatorUiState>()
+
+        _uiState.update { currentState ->
+            currentState.copy(
+                discoveredDeviceUiStates = discoveredDeviceUiStates,
+                enrollmentUiState = EnrollmentUiState.NONE
+            )
+        }
+    }
+
+    /** Registers the selected discovered device, if one is selected. */
+    fun registerAuthenticator() {
+        // TODO(b/293906744): Call RemoteAuthManager.register with selected device and update
+        //  _uiState.
+    }
+}

tests/robotests/src/com/android/settings/remoteauth/enrolling/RemoteAuthEnrollEnrollingTest.kt

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.remoteauth.enrolling
+
+import android.os.Bundle
+import androidx.fragment.app.testing.launchFragmentInContainer
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.matcher.ViewMatchers.*
+import com.android.settings.R
+import org.hamcrest.core.IsNot.not
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+
+@RunWith(RobolectricTestRunner::class)
+class RemoteAuthEnrollEnrollingTest {
+    @Before
+    fun setup() {
+        launchFragmentInContainer<RemoteAuthEnrollEnrolling>(Bundle(), R.style.SudThemeGlif)
+    }
+
+    @Test
+    fun testRemoteAuthenticatorEnrollEnrolling_hasHeader() {
+        onView(withText(R.string.security_settings_remoteauth_enroll_enrolling_title)).check(
+            matches(
+                isDisplayed()
+            )
+        )
+    }
+
+    @Test
+    fun testRemoteAuthenticatorEnrollEnrolling_primaryButtonDisabled() {
+        onView(withText(R.string.security_settings_remoteauth_enroll_enrolling_agree)).check(
+            matches(
+                isNotEnabled()
+            )
+        )
+    }
+
+    @Test
+    fun testRemoteAuthenticatorEnrollEnrolling_progressBarNotDisplayed() {
+        onView(withId(R.id.enrolling_list_progress_bar)).check(matches(not(isDisplayed())))
+    }
+
+    @Test
+    fun testRemoteAuthenticatorEnrollEnrolling_errorTextNotDisplayed() {
+        onView(withId(R.id.error_text)).check(matches(not(isDisplayed())))
+    }
+}