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/*
* Copyright (C) 2017 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.accessibility;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.content.ComponentName;
import android.content.Context;
import android.content.res.Resources;
import android.os.Bundle;
import android.provider.SearchIndexableResource;
import android.provider.Settings;
import androidx.preference.Preference;
import android.text.TextUtils;
import android.view.accessibility.AccessibilityManager;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.settings.R;
import com.android.settings.dashboard.DashboardFragment;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Indexable;
import com.android.settingslib.search.SearchIndexable;
import java.util.Arrays;
import java.util.List;
@SearchIndexable
public final class MagnificationPreferenceFragment extends DashboardFragment {
private static final String TAG = "MagnificationPreferenceFragment";
// Settings App preference keys
private static final String PREFERENCE_TITLE_KEY = "magnification_preference_screen_title";
// Pseudo ComponentName used to represent navbar magnification in Settings.Secure.
private static final String MAGNIFICATION_COMPONENT_ID =
"com.android.server.accessibility.MagnificationController";
private boolean mLaunchedFromSuw = false;
@Override
public int getMetricsCategory() {
return MetricsEvent.ACCESSIBILITY_SCREEN_MAGNIFICATION_SETTINGS;
}
@Override
protected String getLogTag() {
return TAG;
}
@Override
public int getHelpResource() {
return R.string.help_url_magnification;
}
@Override
protected int getPreferenceScreenResId() {
return R.xml.accessibility_magnification_settings;
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
final Bundle args = getArguments();
if ((args != null) && args.containsKey(AccessibilitySettings.EXTRA_LAUNCHED_FROM_SUW)) {
mLaunchedFromSuw = args.getBoolean(AccessibilitySettings.EXTRA_LAUNCHED_FROM_SUW);
}
use(MagnificationGesturesPreferenceController.class)
.setIsFromSUW(mLaunchedFromSuw);
use(MagnificationNavbarPreferenceController.class)
.setIsFromSUW(mLaunchedFromSuw);
}
@Override
public boolean onPreferenceTreeClick(Preference preference) {
if (mLaunchedFromSuw) {
// If invoked from SUW, redirect to fragment instrumented for Vision Settings metrics
preference.setFragment(
ToggleScreenMagnificationPreferenceFragmentForSetupWizard.class.getName());
}
return super.onPreferenceTreeClick(preference);
}
static CharSequence getConfigurationWarningStringForSecureSettingsKey(String key,
Context context) {
if (!Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED.equals(key)) {
return null;
}
if (Settings.Secure.getInt(context.getContentResolver(),
Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED, 0) == 0) {
return null;
}
final AccessibilityManager am = (AccessibilityManager) context.getSystemService(
Context.ACCESSIBILITY_SERVICE);
final String assignedId = Settings.Secure.getString(context.getContentResolver(),
Settings.Secure.ACCESSIBILITY_BUTTON_TARGET_COMPONENT);
if (!TextUtils.isEmpty(assignedId) && !MAGNIFICATION_COMPONENT_ID.equals(assignedId)) {
final ComponentName assignedComponentName = ComponentName.unflattenFromString(
assignedId);
final List<AccessibilityServiceInfo> activeServices =
am.getEnabledAccessibilityServiceList(
AccessibilityServiceInfo.FEEDBACK_ALL_MASK);
final int serviceCount = activeServices.size();
for (int i = 0; i < serviceCount; i++) {
final AccessibilityServiceInfo info = activeServices.get(i);
if (info.getComponentName().equals(assignedComponentName)) {
final CharSequence assignedServiceName = info.getResolveInfo().loadLabel(
context.getPackageManager());
return context.getString(
R.string.accessibility_screen_magnification_navbar_configuration_warning,
assignedServiceName);
}
}
}
return null;
}
/**
* @return {@code true} if this fragment should be shown, {@code false} otherwise. This
* fragment is shown in the case that more than one magnification mode is available.
*/
static boolean isApplicable(Resources res) {
return res.getBoolean(com.android.internal.R.bool.config_showNavigationBar);
}
public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
new BaseSearchIndexProvider() {
@Override
public List<SearchIndexableResource> getXmlResourcesToIndex(Context context,
boolean enabled) {
final SearchIndexableResource sir = new SearchIndexableResource(context);
sir.xmlResId = R.xml.accessibility_magnification_settings;
return Arrays.asList(sir);
}
@Override
protected boolean isPageSearchEnabled(Context context) {
return isApplicable(context.getResources());
}
@Override
public List<String> getNonIndexableKeys(Context context) {
List<String> keys = super.getNonIndexableKeys(context);
keys.add(PREFERENCE_TITLE_KEY);
return keys;
}
};
}
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