Added autofill options on Developer Options screen.

Test: manual verification
Test: atest AutofillResetOptionsPreferenceControllerTest\
            AutofillLoggingLevelPreferenceControllerTest
Test: runtest --path packages/apps/Settings/tests/unit/src/com/android/settings/core/PreferenceControllerContractTest.java
Fixes: 65700540

Change-Id: I6b35fbf549529f4d97df164ce3fb6d641ee37650

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

@@ -39,6 +39,8 @@ import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 import com.android.settings.dashboard.RestrictedDashboardFragment;
+import com.android.settings.development.autofill.AutofillLoggingLevelPreferenceController;
+import com.android.settings.development.autofill.AutofillResetOptionsPreferenceController;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
 import com.android.settings.widget.SwitchBar;
@@ -466,6 +468,8 @@ 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 AutofillLoggingLevelPreferenceController(context));
+        controllers.add(new AutofillResetOptionsPreferenceController(context));
         return controllers;
     }
 

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

@@ -0,0 +1,112 @@
+/*
+ * 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.development.autofill;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.provider.Settings;
+import android.text.BidiFormatter;
+import android.text.InputType;
+import android.util.AttributeSet;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.util.Slog;
+import android.view.Display;
+import android.view.View;
+import android.view.autofill.AutofillManager;
+import android.widget.EditText;
+
+import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settingslib.CustomEditTextPreferenceCompat;
+
+import java.text.NumberFormat;
+
+/**
+ * Base class for Autofill integer properties that are backed by
+ * {@link android.provider.Settings.Global}.
+ */
+abstract class AbstractGlobalSettingsPreference extends CustomEditTextPreferenceCompat {
+
+    private static final String TAG = "AbstractGlobalSettingsPreference";
+
+    private final String mKey;
+    private final int mDefaultValue;
+
+    private final AutofillDeveloperSettingsObserver mObserver;
+
+    protected AbstractGlobalSettingsPreference(Context context, AttributeSet attrs,
+            String key, int defaultValue) {
+        super(context, attrs);
+
+        mKey = key;
+        mDefaultValue = defaultValue;
+        mObserver = new AutofillDeveloperSettingsObserver(context, () -> updateSummary());
+    }
+
+    @Override
+    public void onAttached() {
+        super.onAttached();
+
+        mObserver.register();
+        updateSummary();
+    }
+
+    @Override
+    public void onDetached() {
+        mObserver.unregister();
+
+        super.onDetached();
+    }
+
+    private String getCurrentValue() {
+        final int value = Settings.Global.getInt(getContext().getContentResolver(),
+                mKey, mDefaultValue);
+
+        return Integer.toString(value);
+    }
+
+    private void updateSummary() {
+        setSummary(getCurrentValue());
+
+    }
+
+    @Override
+    protected void onBindDialogView(View view) {
+        super.onBindDialogView(view);
+
+        EditText editText = view.findViewById(android.R.id.edit);
+        if (editText != null) {
+            editText.setInputType(InputType.TYPE_CLASS_NUMBER);
+            editText.setText(getCurrentValue());
+            Utils.setEditTextCursorPosition(editText);
+        }
+    }
+
+    @Override
+    protected void onDialogClosed(boolean positiveResult) {
+        if (positiveResult) {
+            final String stringValue = getText();
+            int newValue = mDefaultValue;
+            try {
+                newValue = Integer.parseInt(stringValue);
+            } catch (Exception e) {
+                Log.e(TAG, "Error converting '" + stringValue + "' to integer. Using "
+                        + mDefaultValue + " instead");
+            }
+            Settings.Global.putInt(getContext().getContentResolver(), mKey, newValue);
+        }
+    }
+}

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

@@ -0,0 +1,59 @@
+/*
+ * 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.development.autofill;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.UserHandle;
+import android.provider.Settings;
+
+final class AutofillDeveloperSettingsObserver extends ContentObserver {
+
+    private final Runnable mChangeCallback;
+    private final ContentResolver mResolver;
+
+    public AutofillDeveloperSettingsObserver(Context context, Runnable changeCallback) {
+        super(new Handler());
+
+        mResolver = context.getContentResolver();
+        mChangeCallback = changeCallback;
+    }
+
+    public void register() {
+        mResolver.registerContentObserver(Settings.Global.getUriFor(
+                Settings.Global.AUTOFILL_LOGGING_LEVEL), false, this,
+                UserHandle.USER_ALL);
+        mResolver.registerContentObserver(Settings.Global.getUriFor(
+                Settings.Global.AUTOFILL_MAX_PARTITIONS_SIZE), false, this,
+                UserHandle.USER_ALL);
+        mResolver.registerContentObserver(Settings.Global.getUriFor(
+                Settings.Global.AUTOFILL_MAX_VISIBLE_DATASETS), false, this,
+                UserHandle.USER_ALL);
+    }
+
+    public void unregister() {
+        mResolver.unregisterContentObserver(this);
+    }
+
+    @Override
+    public void onChange(boolean selfChange, Uri uri, int userId) {
+        mChangeCallback.run(); // Run Forrest, Run!
+    }
+}

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

@@ -0,0 +1,100 @@
+/*
+ * 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.development.autofill;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.provider.Settings;
+import android.view.autofill.AutofillManager;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+
+public final class AutofillLoggingLevelPreferenceController
+        extends DeveloperOptionsPreferenceController
+        implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
+
+    private static final String AUTOFILL_LOGGING_LEVEL_KEY = "autofill_logging_level";
+
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+    private final AutofillDeveloperSettingsObserver mObserver;
+
+    public AutofillLoggingLevelPreferenceController(Context context) {
+        super(context);
+
+        Resources resources = context.getResources();
+        mListValues = resources.getStringArray(R.array.autofill_logging_level_values);
+        mListSummaries = resources.getStringArray(R.array.autofill_logging_level_entries);
+        mObserver = new AutofillDeveloperSettingsObserver(mContext, () -> updateOptions());
+        mObserver.register();
+        // TODO: there should be a hook on AbstractPreferenceController where we could unregister it
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return AUTOFILL_LOGGING_LEVEL_KEY;
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        writeLevel(newValue);
+        updateOptions();
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        updateOptions();
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        super.onDeveloperOptionsSwitchDisabled();
+        writeLevel(null);
+    }
+
+    private void updateOptions() {
+        final int level = Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.AUTOFILL_LOGGING_LEVEL, AutofillManager.DEFAULT_LOGGING_LEVEL);
+
+        final int index;
+        if (level == AutofillManager.FLAG_ADD_CLIENT_DEBUG) {
+            index = 1;
+        } else if (level == AutofillManager.FLAG_ADD_CLIENT_VERBOSE) {
+            index = 2;
+        } else {
+            index = 0;
+        }
+        final ListPreference listPreference = (ListPreference) mPreference;
+        listPreference.setValue(mListValues[index]);
+        listPreference.setSummary(mListSummaries[index]);
+    }
+
+    private void writeLevel(Object newValue) {
+        int level = AutofillManager.NO_LOGGING;
+        if (newValue instanceof String) {
+            level = Integer.parseInt((String) newValue);
+        }
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.AUTOFILL_LOGGING_LEVEL, level);
+    }
+}

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

@@ -0,0 +1,30 @@
+/*
+ * 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.development.autofill;
+
+import android.content.Context;
+import android.provider.Settings;
+import android.util.AttributeSet;
+import android.view.autofill.AutofillManager;
+
+import java.text.NumberFormat;
+
+public final class AutofillMaxPartitionsPreference extends AbstractGlobalSettingsPreference {
+
+    public AutofillMaxPartitionsPreference(Context context, AttributeSet attrs) {
+        super(context, attrs, Settings.Global.AUTOFILL_MAX_PARTITIONS_SIZE,
+                AutofillManager.DEFAULT_MAX_PARTITIONS_SIZE);
+    }
+}

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

@@ -0,0 +1,85 @@
+/*
+ * 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.development.autofill;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.autofill.AutofillManager;
+
+import androidx.preference.PreferenceCategory;
+
+public final class AutofillPreferenceCategory extends PreferenceCategory {
+
+    private static final String TAG = "AutofillPreferenceCategory";
+
+    private final ContentResolver mContentResolver;
+    private final ContentObserver mSettingsObserver;
+
+    public AutofillPreferenceCategory(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        mSettingsObserver = new ContentObserver(new Handler()) {
+            @Override
+            public void onChange(boolean selfChange, Uri uri, int userId) {
+                Log.w(TAG, "Autofill Service changed, but UI cannot be refreshed");
+                // TODO(b/111838239): we cannot update the UI because AFM.isEnabled() will return
+                // the previous value. Once that's fixed, we'll need to call one of the 2 callbacks
+                // below:
+                // notifyChanged();
+                // notifyDependencyChange(shouldDisableDependents());
+            }
+        };
+        mContentResolver = context.getContentResolver();
+    }
+
+    @Override
+    public void onAttached() {
+        super.onAttached();
+
+        mContentResolver.registerContentObserver(
+                Settings.Secure.getUriFor(Settings.Secure.AUTOFILL_SERVICE), false,
+                mSettingsObserver);
+    }
+
+    @Override
+    public void onDetached() {
+        mContentResolver.unregisterContentObserver(mSettingsObserver);
+
+        super.onDetached();
+    }
+
+    // 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 boolean enabled = afm != null && afm.isEnabled();
+        Log.v(TAG, "isAutofillEnabled(): " + enabled);
+        return enabled;
+    }
+
+    @Override
+    public boolean shouldDisableDependents() {
+        final boolean shouldIt = !isAutofillEnabled();
+        Log.v(TAG, "shouldDisableDependents(): " + shouldIt);
+        return shouldIt;
+    }
+}

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

@@ -0,0 +1,64 @@
+/*
+ * 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.development.autofill;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.res.Resources;
+import android.provider.Settings;
+import android.text.TextUtils;
+import android.view.autofill.AutofillManager;
+import android.widget.Toast;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+
+public final class AutofillResetOptionsPreferenceController
+        extends DeveloperOptionsPreferenceController
+        implements PreferenceControllerMixin {
+
+    private static final String AUTOFILL_RESET_OPTIONS_KEY = "autofill_reset_developer_options";
+
+    public AutofillResetOptionsPreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return AUTOFILL_RESET_OPTIONS_KEY;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (!TextUtils.equals(AUTOFILL_RESET_OPTIONS_KEY, preference.getKey())) {
+            return false;
+        }
+        final ContentResolver contentResolver = mContext.getContentResolver();
+        Settings.Global.putInt(contentResolver, Settings.Global.AUTOFILL_LOGGING_LEVEL,
+                AutofillManager.DEFAULT_LOGGING_LEVEL);
+        Settings.Global.putInt(contentResolver, Settings.Global.AUTOFILL_MAX_PARTITIONS_SIZE,
+                AutofillManager.DEFAULT_MAX_PARTITIONS_SIZE);
+        Settings.Global.putInt(contentResolver, Settings.Global.AUTOFILL_MAX_VISIBLE_DATASETS, 0);
+        Toast.makeText(mContext, R.string.autofill_reset_developer_options_complete,
+                Toast.LENGTH_SHORT).show();
+        return true;
+    }
+}

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

@@ -0,0 +1,26 @@
+/*
+ * 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.development.autofill;
+
+import android.content.Context;
+import android.provider.Settings;
+import android.util.AttributeSet;
+
+public final class AutofillVisibleDatasetsPreference extends AbstractGlobalSettingsPreference {
+
+    public AutofillVisibleDatasetsPreference(Context context, AttributeSet attrs) {
+        super(context, attrs, Settings.Global.AUTOFILL_MAX_VISIBLE_DATASETS, 0);
+    }
+}