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/*
* Copyright (C) 2015 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.notification;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.provider.Settings;
import android.util.Slog;
import com.android.settings.notification.ManagedServiceSettings.Config;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
public class ServiceListing {
private final ContentResolver mContentResolver;
private final Context mContext;
private final Config mConfig;
private final HashSet<ComponentName> mEnabledServices = new HashSet<ComponentName>();
private final List<ServiceInfo> mServices = new ArrayList<ServiceInfo>();
private final List<Callback> mCallbacks = new ArrayList<Callback>();
private boolean mListening;
public ServiceListing(Context context, Config config) {
mContext = context;
mConfig = config;
mContentResolver = context.getContentResolver();
}
public void addCallback(Callback callback) {
mCallbacks.add(callback);
}
public void removeCallback(Callback callback) {
mCallbacks.remove(callback);
}
public void setListening(boolean listening) {
if (mListening == listening) return;
mListening = listening;
if (mListening) {
// listen for package changes
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_PACKAGE_ADDED);
filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
filter.addDataScheme("package");
mContext.registerReceiver(mPackageReceiver, filter);
mContentResolver.registerContentObserver(Settings.Secure.getUriFor(mConfig.setting),
false, mSettingsObserver);
} else {
mContext.unregisterReceiver(mPackageReceiver);
mContentResolver.unregisterContentObserver(mSettingsObserver);
}
}
public static int getEnabledServicesCount(Config config, Context context) {
final String flat = Settings.Secure.getString(context.getContentResolver(), config.setting);
if (flat == null || "".equals(flat)) return 0;
final String[] components = flat.split(":");
return components.length;
}
public static int getServicesCount(Config c, PackageManager pm) {
return getServices(c, null, pm);
}
public static ServiceInfo findService(Context context, Config config, final ComponentName cn) {
final ServiceListing listing = new ServiceListing(context, config);
final List<ServiceInfo> services = listing.reload();
for (ServiceInfo service : services) {
final ComponentName serviceCN = new ComponentName(service.packageName, service.name);
if (serviceCN.equals(cn)) {
return service;
}
}
return null;
}
private static int getServices(Config c, List<ServiceInfo> list, PackageManager pm) {
int services = 0;
if (list != null) {
list.clear();
}
final int user = ActivityManager.getCurrentUser();
List<ResolveInfo> installedServices = pm.queryIntentServicesAsUser(
new Intent(c.intentAction),
PackageManager.GET_SERVICES | PackageManager.GET_META_DATA,
user);
for (int i = 0, count = installedServices.size(); i < count; i++) {
ResolveInfo resolveInfo = installedServices.get(i);
ServiceInfo info = resolveInfo.serviceInfo;
if (!c.permission.equals(info.permission)) {
Slog.w(c.tag, "Skipping " + c.noun + " service "
+ info.packageName + "/" + info.name
+ ": it does not require the permission "
+ c.permission);
continue;
}
if (list != null) {
list.add(info);
}
services++;
}
return services;
}
private void saveEnabledServices() {
StringBuilder sb = null;
for (ComponentName cn : mEnabledServices) {
if (sb == null) {
sb = new StringBuilder();
} else {
sb.append(':');
}
sb.append(cn.flattenToString());
}
Settings.Secure.putString(mContentResolver, mConfig.setting,
sb != null ? sb.toString() : "");
}
private void loadEnabledServices() {
mEnabledServices.clear();
final String flat = Settings.Secure.getString(mContentResolver, mConfig.setting);
if (flat != null && !"".equals(flat)) {
final String[] names = flat.split(":");
for (int i = 0; i < names.length; i++) {
final ComponentName cn = ComponentName.unflattenFromString(names[i]);
if (cn != null) {
mEnabledServices.add(cn);
}
}
}
}
public List<ServiceInfo> reload() {
loadEnabledServices();
getServices(mConfig, mServices, mContext.getPackageManager());
for (Callback callback : mCallbacks) {
callback.onServicesReloaded(mServices);
}
return mServices;
}
public boolean isEnabled(ComponentName cn) {
return mEnabledServices.contains(cn);
}
public void setEnabled(ComponentName cn, boolean enabled) {
if (enabled) {
mEnabledServices.add(cn);
} else {
mEnabledServices.remove(cn);
}
saveEnabledServices();
}
private final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {
@Override
public void onChange(boolean selfChange, Uri uri) {
reload();
}
};
private final BroadcastReceiver mPackageReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
reload();
}
};
public interface Callback {
void onServicesReloaded(List<ServiceInfo> services);
}
}
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