1/n Start adding Face settings (base, intro)

This change refactors common biometric settings code as well to minimize
duplicated code in areas such as:
    Preference Controller
    EnrollBase
    EnrollIntro

This change also updates ChooseLock to have Face + Pin/Pattern/Pass

Bug: 110589286

Test: Fingerprint settings/enrollment still works
Test: make -j56 RunSettingsRoboTests
Change-Id: Ie35406a01b85617423beece42683ac086e9bc4a7

src/com/android/settings/biometrics/BiometricEnrollBase.java

@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2018 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.biometrics;
+
+import android.annotation.Nullable;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.os.UserHandle;
+import android.text.TextUtils;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import com.android.settings.R;
+import com.android.settings.SetupWizardUtils;
+import com.android.settings.biometrics.fingerprint.FingerprintEnrollEnrolling;
+import com.android.settings.biometrics.fingerprint.FingerprintSettings;
+import com.android.settings.core.InstrumentedActivity;
+import com.android.settings.password.ChooseLockSettingsHelper;
+import com.android.setupwizardlib.GlifLayout;
+
+/**
+ * Base activity for all fingerprint enrollment steps.
+ */
+public abstract class BiometricEnrollBase extends InstrumentedActivity
+        implements View.OnClickListener {
+    public static final int RESULT_FINISHED = BiometricSettings.RESULT_FINISHED;
+    public static final int RESULT_SKIP = BiometricSettings.RESULT_SKIP;
+    public static final int RESULT_TIMEOUT = BiometricSettings.RESULT_TIMEOUT;
+
+    protected byte[] mToken;
+    protected int mUserId;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mToken = getIntent().getByteArrayExtra(
+                ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
+        if (savedInstanceState != null && mToken == null) {
+            mToken = savedInstanceState.getByteArray(
+                    ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
+        }
+        mUserId = getIntent().getIntExtra(Intent.EXTRA_USER_ID, UserHandle.myUserId());
+    }
+
+    @Override
+    protected void onApplyThemeResource(Resources.Theme theme, int resid, boolean first) {
+        resid = SetupWizardUtils.getTheme(getIntent());
+        super.onApplyThemeResource(theme, resid, first);
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putByteArray(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, mToken);
+    }
+
+    @Override
+    protected void onPostCreate(@Nullable Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+        initViews();
+    }
+
+    protected void initViews() {
+        getWindow().setStatusBarColor(Color.TRANSPARENT);
+        Button nextButton = getNextButton();
+        if (nextButton != null) {
+            nextButton.setOnClickListener(this);
+        }
+    }
+
+    protected GlifLayout getLayout() {
+        return (GlifLayout) findViewById(R.id.setup_wizard_layout);
+    }
+
+    protected void setHeaderText(int resId, boolean force) {
+        TextView layoutTitle = getLayout().getHeaderTextView();
+        CharSequence previousTitle = layoutTitle.getText();
+        CharSequence title = getText(resId);
+        if (previousTitle != title || force) {
+            if (!TextUtils.isEmpty(previousTitle)) {
+                layoutTitle.setAccessibilityLiveRegion(View.ACCESSIBILITY_LIVE_REGION_POLITE);
+            }
+            getLayout().setHeaderText(title);
+            setTitle(title);
+        }
+    }
+
+    protected void setHeaderText(int resId) {
+        setHeaderText(resId, false /* force */);
+    }
+
+    protected Button getNextButton() {
+        return (Button) findViewById(R.id.next_button);
+    }
+
+    @Override
+    public void onClick(View v) {
+        if (v == getNextButton()) {
+            onNextButtonClick();
+        }
+    }
+
+    protected void onNextButtonClick() {
+    }
+
+    protected Intent getFingerprintEnrollingIntent() {
+        Intent intent = new Intent();
+        intent.setClassName("com.android.settings", FingerprintEnrollEnrolling.class.getName());
+        intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, mToken);
+        if (mUserId != UserHandle.USER_NULL) {
+            intent.putExtra(Intent.EXTRA_USER_ID, mUserId);
+        }
+        return intent;
+    }
+}