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/*
* 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.accessibility;
import static com.android.settings.accessibility.AccessibilityUtil.State.OFF;
import static com.android.settings.accessibility.AccessibilityUtil.State.ON;
import android.accessibilityservice.AccessibilityServiceInfo;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.provider.Settings;
import android.view.accessibility.AccessibilityManager;
import com.android.settings.core.TogglePreferenceController;
import com.android.settingslib.accessibility.AccessibilityUtils;
import java.util.List;
import java.util.Set;
/**
* PreferenceController for accessibility services to be used by Slices.
* Wraps the common logic which enables accessibility services and checks their availability.
* <p>
* Should not be used in a {@link com.android.settings.dashboard.DashboardFragment}.
*/
public class AccessibilitySlicePreferenceController extends TogglePreferenceController {
private final ComponentName mComponentName;
private static final String EMPTY_STRING = "";
public AccessibilitySlicePreferenceController(Context context, String preferenceKey) {
super(context, preferenceKey);
mComponentName = ComponentName.unflattenFromString(getPreferenceKey());
if (mComponentName == null) {
throw new IllegalArgumentException(
"Illegal Component Name from: " + preferenceKey);
}
}
@Override
public CharSequence getSummary() {
final AccessibilityServiceInfo serviceInfo = getAccessibilityServiceInfo();
return serviceInfo == null ? EMPTY_STRING : AccessibilitySettings.getServiceSummary(
mContext, serviceInfo, isChecked());
}
@Override
public boolean isChecked() {
final ContentResolver contentResolver = mContext.getContentResolver();
final boolean accessibilityEnabled = Settings.Secure.getInt(contentResolver,
Settings.Secure.ACCESSIBILITY_ENABLED, OFF) == ON;
if (!accessibilityEnabled) {
return false;
}
final Set<ComponentName> componentNames =
AccessibilityUtils.getEnabledServicesFromSettings(mContext);
return componentNames.contains(mComponentName);
}
@Override
public boolean setChecked(boolean isChecked) {
if (getAccessibilityServiceInfo() == null) {
return false;
}
AccessibilityUtils.setAccessibilityServiceState(mContext, mComponentName, isChecked);
return isChecked == isChecked(); // Verify that it was probably changed.
}
@Override
public int getAvailabilityStatus() {
// Return unsupported when the service is disabled or not installed.
return getAccessibilityServiceInfo() == null ? UNSUPPORTED_ON_DEVICE : AVAILABLE;
}
@Override
public boolean isPublicSlice() {
return true;
}
private AccessibilityServiceInfo getAccessibilityServiceInfo() {
final AccessibilityManager accessibilityManager = mContext.getSystemService(
AccessibilityManager.class);
final List<AccessibilityServiceInfo> serviceList =
accessibilityManager.getInstalledAccessibilityServiceList();
for (AccessibilityServiceInfo serviceInfo : serviceList) {
if (mComponentName.equals(serviceInfo.getComponentName())) {
return serviceInfo;
}
}
return null;
}
}
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