Fix the problem that the autofill could be searched.

PreferenceCategory will not be indexed by default. The auto fill
category use the AutofillPreferenceCategory class in the xml so
it will be indexed.
The solution is to create a controller to replace AutofillPreferenceCategory.

Fix: 185914894
Test: manual adb test to see the log
Change-Id: Id0e3bcc33a3132434a6bd1fe91e1c6915116d06d

res/xml/development_settings.xml

@@ -648,7 +648,7 @@
             android:title="@string/reset_shortcut_manager_throttling" />
     </PreferenceCategory>
 
-    <com.android.settings.development.autofill.AutofillPreferenceCategory
+    <PreferenceCategory
         android:key="debug_autofill_category"
         android:title="@string/debug_autofill_category"
         settings:searchable="false"
@@ -672,7 +672,7 @@
             android:key="autofill_reset_developer_options"
             android:title="@string/autofill_reset_developer_options" />
 
-    </com.android.settings.development.autofill.AutofillPreferenceCategory>
+    </PreferenceCategory>
 
     <PreferenceCategory
         android:key="storage_category"

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -47,6 +47,7 @@ import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 import com.android.settings.core.SubSettingLauncher;
 import com.android.settings.dashboard.RestrictedDashboardFragment;
+import com.android.settings.development.autofill.AutofillCategoryController;
 import com.android.settings.development.autofill.AutofillLoggingLevelPreferenceController;
 import com.android.settings.development.autofill.AutofillResetOptionsPreferenceController;
 import com.android.settings.development.bluetooth.AbstractBluetoothDialogPreferenceController;
@@ -566,6 +567,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new DefaultLaunchPreferenceController(context, "density"));
         controllers.add(new DefaultLaunchPreferenceController(context, "background_check"));
         controllers.add(new DefaultLaunchPreferenceController(context, "inactive_apps"));
+        controllers.add(new AutofillCategoryController(context, lifecycle));
         controllers.add(new AutofillLoggingLevelPreferenceController(context, lifecycle));
         controllers.add(new AutofillResetOptionsPreferenceController(context));
         controllers.add(new BluetoothCodecDialogPreferenceController(context, lifecycle,

src/com/android/settings/development/autofill/AutofillCategoryController.java

@@ -1,15 +1,17 @@
 /*
- * Copyright (C) 2018 The Android Open Source Project
+ * Copyright (C) 2022 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
+ * 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.
+ * 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.development.autofill;
@@ -21,23 +23,36 @@ import android.net.Uri;
 import android.os.Handler;
 import android.os.Looper;
 import android.provider.Settings;
-import android.util.AttributeSet;
 import android.util.Log;
 import android.view.autofill.AutofillManager;
 
-import androidx.preference.PreferenceCategory;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnStart;
+import com.android.settingslib.core.lifecycle.events.OnStop;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
 
-public final class AutofillPreferenceCategory extends PreferenceCategory {
+/**
+ * Controller class for observing the state of AutofillManager.
+ */
+public class AutofillCategoryController extends DeveloperOptionsPreferenceController implements
+        LifecycleObserver, OnStart, OnStop {
 
-    private static final String TAG = "AutofillPreferenceCategory";
+    private static final String TAG = "AutofillCategoryController";
+
+    private static final String CATEGORY_KEY = "debug_autofill_category";
     private static final long DELAYED_MESSAGE_TIME_MS = 2000;
 
-    private final ContentResolver mContentResolver;
-    private final ContentObserver mSettingsObserver;
+    private ContentResolver mContentResolver;
+    private ContentObserver mSettingsObserver;
     private final Handler mHandler = new Handler(Looper.getMainLooper());
 
-    public AutofillPreferenceCategory(Context context, AttributeSet attrs) {
-        super(context, attrs);
+    public AutofillCategoryController(Context context, Lifecycle lifecycle) {
+        super(context);
+
+        if (lifecycle != null) {
+            lifecycle.addObserver(this);
+        }
 
         mSettingsObserver = new ContentObserver(mHandler) {
             @Override
@@ -45,7 +60,8 @@ public final class AutofillPreferenceCategory extends PreferenceCategory {
                 // We cannot apply the change yet because AutofillManager.isEnabled() state is
                 // updated by a ContentObserver as well and there's no guarantee of which observer
                 // is called first - hence, it's possible that the state didn't change here yet.
-                mHandler.postDelayed(() -> notifyDependencyChange(shouldDisableDependents()),
+                mHandler.postDelayed(
+                        () -> mPreference.notifyDependencyChange(shouldDisableDependents()),
                         DELAYED_MESSAGE_TIME_MS);
             }
         };
@@ -53,32 +69,33 @@ public final class AutofillPreferenceCategory extends PreferenceCategory {
     }
 
     @Override
-    public void onAttached() {
-        super.onAttached();
-
-        mContentResolver.registerContentObserver(
-                Settings.Secure.getUriFor(Settings.Secure.AUTOFILL_SERVICE), false,
-                mSettingsObserver);
+    public String getPreferenceKey() {
+        return CATEGORY_KEY;
     }
 
     @Override
-    public void onDetached() {
-        mContentResolver.unregisterContentObserver(mSettingsObserver);
+    public void onStart() {
+        mContentResolver.registerContentObserver(
+                Settings.Secure.getUriFor(Settings.Secure.AUTOFILL_SERVICE), false,
+                mSettingsObserver);
 
-        super.onDetached();
+    }
+
+    @Override
+    public void onStop() {
+        mContentResolver.unregisterContentObserver(mSettingsObserver);
     }
 
     // PreferenceCategory.isEnabled() always return false, so we rather not change that logic
     // decide whether the children should be shown using isAutofillEnabled() instead.
     private boolean isAutofillEnabled() {
-        final AutofillManager afm = getContext().getSystemService(AutofillManager.class);
+        final AutofillManager afm = mContext.getSystemService(AutofillManager.class);
         final boolean enabled = afm != null && afm.isEnabled();
         Log.v(TAG, "isAutofillEnabled(): " + enabled);
         return enabled;
     }
 
-    @Override
-    public boolean shouldDisableDependents() {
+    private boolean shouldDisableDependents() {
         final boolean shouldIt = !isAutofillEnabled();
         Log.v(TAG, "shouldDisableDependents(): " + shouldIt);
         return shouldIt;