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/*
* Copyright (C) 2010 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;
import android.app.ActivityManager;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.DialogInterface;
import android.content.IntentFilter;
import android.content.pm.PackageItemInfo;
import android.content.pm.ServiceInfo;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.service.notification.NotificationListenerService;
import android.util.Slog;
import android.widget.ArrayAdapter;
import android.app.ListFragment;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.provider.Settings;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import java.util.HashSet;
import java.util.List;
public class NotificationAccessSettings extends ListFragment {
static final String TAG = NotificationAccessSettings.class.getSimpleName();
private static final boolean SHOW_PACKAGE_NAME = false;
private PackageManager mPM;
private ContentResolver mCR;
private final HashSet<ComponentName> mEnabledListeners = new HashSet<ComponentName>();
private ListenerListAdapter mList;
private final Uri ENABLED_NOTIFICATION_LISTENERS_URI
= Settings.Secure.getUriFor(Settings.Secure.ENABLED_NOTIFICATION_LISTENERS);
private final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {
@Override
public void onChange(boolean selfChange, Uri uri) {
updateList();
}
};
private final BroadcastReceiver mPackageReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateList();
}
};
public class ListenerWarningDialogFragment extends DialogFragment {
static final String KEY_COMPONENT = "c";
static final String KEY_LABEL = "l";
public ListenerWarningDialogFragment setListenerInfo(ComponentName cn, String label) {
Bundle args = new Bundle();
args.putString(KEY_COMPONENT, cn.flattenToString());
args.putString(KEY_LABEL, label);
setArguments(args);
return this;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final Bundle args = getArguments();
final String label = args.getString(KEY_LABEL);
final ComponentName cn = ComponentName.unflattenFromString(args.getString(KEY_COMPONENT));
final String title = getResources().getString(
R.string.notification_listener_security_warning_title, label);
final String summary = getResources().getString(
R.string.notification_listener_security_warning_summary, label);
return new AlertDialog.Builder(getActivity())
.setMessage(summary)
.setTitle(title)
.setIconAttribute(android.R.attr.alertDialogIcon)
.setCancelable(true)
.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
mEnabledListeners.add(cn);
saveEnabledListeners();
}
})
.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// pass
}
})
.create();
}
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mPM = getActivity().getPackageManager();
mCR = getActivity().getContentResolver();
mList = new ListenerListAdapter(getActivity());
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.notification_access_settings, container, false);
}
@Override
public void onResume() {
super.onResume();
updateList();
// 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");
getActivity().registerReceiver(mPackageReceiver, filter);
mCR.registerContentObserver(ENABLED_NOTIFICATION_LISTENERS_URI, false, mSettingsObserver);
}
@Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(mPackageReceiver);
mCR.unregisterContentObserver(mSettingsObserver);
}
void loadEnabledListeners() {
mEnabledListeners.clear();
final String flat = Settings.Secure.getString(mCR,
Settings.Secure.ENABLED_NOTIFICATION_LISTENERS);
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) {
mEnabledListeners.add(cn);
}
}
}
}
void saveEnabledListeners() {
StringBuilder sb = null;
for (ComponentName cn : mEnabledListeners) {
if (sb == null) {
sb = new StringBuilder();
} else {
sb.append(':');
}
sb.append(cn.flattenToString());
}
Settings.Secure.putString(mCR,
Settings.Secure.ENABLED_NOTIFICATION_LISTENERS,
sb != null ? sb.toString() : "");
}
void updateList() {
mList.clear();
loadEnabledListeners();
final int user = ActivityManager.getCurrentUser();
List<ResolveInfo> installedServices = mPM.queryIntentServicesAsUser(
new Intent(NotificationListenerService.SERVICE_INTERFACE),
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 (!android.Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE.equals(
info.permission)) {
Slog.w(TAG, "Skipping notification listener service "
+ info.packageName + "/" + info.name
+ ": it does not require the permission "
+ android.Manifest.permission.BIND_NOTIFICATION_LISTENER_SERVICE);
continue;
}
mList.add(info);
}
mList.sort(new PackageItemInfo.DisplayNameComparator(mPM));
getListView().setAdapter(mList);
}
boolean isListenerEnabled(ServiceInfo info) {
final ComponentName cn = new ComponentName(info.packageName, info.name);
return mEnabledListeners.contains(cn);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
ServiceInfo info = mList.getItem(position);
final ComponentName cn = new ComponentName(info.packageName, info.name);
if (mEnabledListeners.contains(cn)) {
// the simple version: disabling
mEnabledListeners.remove(cn);
saveEnabledListeners();
} else {
// show a scary dialog
new ListenerWarningDialogFragment()
.setListenerInfo(cn, info.loadLabel(mPM).toString())
.show(getFragmentManager(), "dialog");
}
}
static class ViewHolder {
ImageView icon;
TextView name;
CheckBox checkbox;
TextView description;
}
class ListenerListAdapter extends ArrayAdapter<ServiceInfo> {
final LayoutInflater mInflater;
ListenerListAdapter(Context context) {
super(context, 0, 0);
mInflater = (LayoutInflater)
getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public boolean hasStableIds() {
return true;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View v;
if (convertView == null) {
v = newView(parent);
} else {
v = convertView;
}
bindView(v, position);
return v;
}
public View newView(ViewGroup parent) {
View v = mInflater.inflate(R.layout.notification_listener_item, parent, false);
ViewHolder h = new ViewHolder();
h.icon = (ImageView) v.findViewById(R.id.icon);
h.name = (TextView) v.findViewById(R.id.name);
h.checkbox = (CheckBox) v.findViewById(R.id.checkbox);
h.description = (TextView) v.findViewById(R.id.description);
v.setTag(h);
return v;
}
public void bindView(View view, int position) {
ViewHolder vh = (ViewHolder) view.getTag();
ServiceInfo info = getItem(position);
vh.icon.setImageDrawable(info.loadIcon(mPM));
vh.name.setText(info.loadLabel(mPM));
if (SHOW_PACKAGE_NAME) {
vh.description.setText(info.packageName);
vh.description.setVisibility(View.VISIBLE);
} else {
vh.description.setVisibility(View.GONE);
}
vh.checkbox.setChecked(isListenerEnabled(info));
}
}
}