Prompt user to Setup a device lock if not set

This add below changes on selecting private space setting:
1. Prompt user to setup device lock if not already set
2. If device lock is set authenticate user first before displaying private space settings page

Screenshot - https://screenshot.googleplex.com/4SrYHbBMJfVuoRy.png
https://screenshot.googleplex.com/6vNWm7Lg83vfnH8.png
RecordingLink - https://drive.google.com/file/d/1r4zb3ILPRqwvP5tlwfjQ9GgnDAW4vZg6/view?usp=drive_link

Bug: 289016927
Test: atest PrivateSpaceSettingsAuthenticatorTest , atest SecuritySettingsTest
Change-Id: I0e5dfb30213843c0dec60a17d01c30cd91db89b0

src/com/android/settings/privatespace/PrivateSpaceAuthenticationActivity.java

@@ -0,0 +1,152 @@
+/*
+ * 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.privatespace;
+
+import static android.app.admin.DevicePolicyManager.ACTION_SET_NEW_PASSWORD;
+
+import android.app.AlertDialog;
+import android.app.KeyguardManager;
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Flags;
+import android.util.Log;
+
+import androidx.activity.result.ActivityResult;
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.FragmentActivity;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.R;
+import com.android.settings.core.SubSettingLauncher;
+import com.android.settingslib.transition.SettingsTransitionHelper;
+
+import com.google.android.setupdesign.util.ThemeHelper;
+
+/**
+ * Prompts user to set a device lock if not set with an alert dialog.
+ * If a lock is already set then first authenticates user before displaying private space settings
+ * page.
+ */
+public class PrivateSpaceAuthenticationActivity extends FragmentActivity {
+    private static final String TAG = "PrivateSpaceAuthCheck";
+    private PrivateSpaceMaintainer mPrivateSpaceMaintainer;
+    private KeyguardManager mKeyguardManager;
+
+    private final ActivityResultLauncher<Intent> mSetDeviceLock =
+            registerForActivityResult(new ActivityResultContracts.StartActivityForResult(),
+                    this::onSetDeviceLockResult);
+    private final ActivityResultLauncher<Intent> mVerifyDeviceLock =
+            registerForActivityResult(new ActivityResultContracts.StartActivityForResult(),
+                    this::onVerifyDeviceLock);
+
+    static class Injector {
+        PrivateSpaceMaintainer injectPrivateSpaceMaintainer(Context context) {
+            return PrivateSpaceMaintainer.getInstance(context);
+        }
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (Flags.allowPrivateProfile()) {
+            ThemeHelper.trySetDynamicColor(this);
+            mPrivateSpaceMaintainer = new Injector().injectPrivateSpaceMaintainer(
+                    getApplicationContext());
+            if (getKeyguardManager().isDeviceSecure()) {
+                if (savedInstanceState == null) {
+                    Intent credentialIntent =
+                            mPrivateSpaceMaintainer.getPrivateProfileLockCredentialIntent();
+                    if (credentialIntent != null) {
+                        mVerifyDeviceLock.launch(credentialIntent);
+                    } else {
+                        Log.e(TAG, "verifyCredentialIntent is null even though device lock is set");
+                        finish();
+                    }
+                }
+            } else {
+                promptToSetDeviceLock();
+            }
+        } else {
+            Log.w(TAG, "allowPrivateProfile flag is Off!");
+            finish();
+        }
+    }
+
+    /** Show private space settings page on device lock authentications */
+    @VisibleForTesting
+    public void onLockAuthentication(Context context) {
+        new SubSettingLauncher(context)
+                        .setDestination(PrivateSpaceDashboardFragment.class.getName())
+                        .setTransitionType(
+                                SettingsTransitionHelper.TransitionType.TRANSITION_SLIDE)
+                        .setSourceMetricsCategory(SettingsEnums.PRIVATE_SPACE_SETTINGS)
+                        .launch();
+    }
+
+    @VisibleForTesting
+    public void setPrivateSpaceMaintainer(Injector injector) {
+        mPrivateSpaceMaintainer = injector.injectPrivateSpaceMaintainer(getApplicationContext());
+    }
+
+    private void promptToSetDeviceLock() {
+        new AlertDialog.Builder(this)
+                .setTitle(R.string.no_device_lock_title)
+                .setMessage(R.string.no_device_lock_summary)
+                .setPositiveButton(
+                        R.string.no_device_lock_action_label,
+                        (DialogInterface dialog, int which) -> {
+                            mSetDeviceLock.launch(new Intent(ACTION_SET_NEW_PASSWORD));
+                        })
+                .setNegativeButton(
+                        R.string.no_device_lock_cancel,
+                        (DialogInterface dialog, int which) -> finish())
+                .setOnCancelListener(
+                        (DialogInterface dialog) -> {
+                            finish();
+                        })
+                .show();
+    }
+
+    private KeyguardManager getKeyguardManager() {
+        if (mKeyguardManager == null) {
+            mKeyguardManager = getSystemService(KeyguardManager.class);
+        }
+        return  mKeyguardManager;
+    }
+
+    private void onSetDeviceLockResult(@Nullable ActivityResult result) {
+        if (result != null) {
+            if (getKeyguardManager().isDeviceSecure()) {
+                onLockAuthentication(this);
+            }
+            finish();
+        }
+    }
+
+    private void onVerifyDeviceLock(@Nullable ActivityResult result) {
+        if (result != null && result.getResultCode() == RESULT_OK) {
+            onLockAuthentication(this);
+        }
+        finish();
+    }
+}