1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.utils; 18 19 import android.annotation.Nullable; 20 import android.app.ActivityManager; 21 import android.app.AlertDialog; 22 import android.app.Dialog; 23 import android.app.Fragment; 24 import android.app.Notification; 25 import android.app.NotificationManager; 26 import android.app.admin.DevicePolicyManager; 27 import android.content.ComponentName; 28 import android.content.Context; 29 import android.content.DialogInterface; 30 import android.content.pm.PackageItemInfo; 31 import android.content.pm.PackageManager; 32 import android.content.pm.ServiceInfo; 33 import android.os.Bundle; 34 import android.os.UserHandle; 35 import android.os.UserManager; 36 import android.support.v14.preference.SwitchPreference; 37 import android.support.v7.preference.Preference; 38 import android.support.v7.preference.Preference.OnPreferenceChangeListener; 39 import android.support.v7.preference.PreferenceScreen; 40 import android.util.IconDrawableFactory; 41 import android.util.Log; 42 import android.view.View; 43 44 import com.android.internal.logging.nano.MetricsProto; 45 import com.android.settings.R; 46 import com.android.settings.Utils; 47 import com.android.settings.core.instrumentation.InstrumentedDialogFragment; 48 import com.android.settings.notification.EmptyTextSettings; 49 50 import java.util.Collections; 51 import java.util.List; 52 53 public abstract class ManagedServiceSettings extends EmptyTextSettings { 54 private static final String TAG = "ManagedServiceSettings"; 55 private final Config mConfig; 56 57 protected Context mContext; 58 private PackageManager mPm; 59 private DevicePolicyManager mDpm; 60 protected ServiceListing mServiceListing; 61 protected NotificationManager mNm; 62 private IconDrawableFactory mIconDrawableFactory; 63 64 abstract protected Config getConfig(); 65 66 public ManagedServiceSettings() { 67 mConfig = getConfig(); 68 } 69 70 @Override 71 public void onCreate(Bundle icicle) { 72 super.onCreate(icicle); 73 74 mContext = getActivity(); 75 mPm = mContext.getPackageManager(); 76 mDpm = (DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE); 77 mNm = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE); 78 mIconDrawableFactory = IconDrawableFactory.newInstance(mContext); 79 mServiceListing = new ServiceListing(mContext, mConfig); 80 mServiceListing.addCallback(new ServiceListing.Callback() { 81 @Override 82 public void onServicesReloaded(List<ServiceInfo> services) { 83 updateList(services); 84 } 85 }); 86 setPreferenceScreen(getPreferenceManager().createPreferenceScreen(mContext)); 87 } 88 89 @Override 90 public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 91 super.onViewCreated(view, savedInstanceState); 92 setEmptyText(mConfig.emptyText); 93 } 94 95 @Override 96 public void onResume() { 97 super.onResume(); 98 if (!ActivityManager.isLowRamDeviceStatic()) { 99 mServiceListing.reload(); 100 mServiceListing.setListening(true); 101 } else { 102 setEmptyText(R.string.disabled_low_ram_device); 103 } 104 } 105 106 @Override 107 public void onPause() { 108 super.onPause(); 109 mServiceListing.setListening(false); 110 } 111 112 private void updateList(List<ServiceInfo> services) { 113 UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); 114 final int managedProfileId = Utils.getManagedProfileId(um, UserHandle.myUserId()); 115 116 final PreferenceScreen screen = getPreferenceScreen(); 117 screen.removeAll(); 118 Collections.sort(services, new PackageItemInfo.DisplayNameComparator(mPm)); 119 for (ServiceInfo service : services) { 120 final ComponentName cn = new ComponentName(service.packageName, service.name); 121 CharSequence title = null; 122 try { 123 title = mPm.getApplicationInfoAsUser( 124 service.packageName, 0, getCurrentUser(managedProfileId)).loadLabel(mPm); 125 } catch (PackageManager.NameNotFoundException e) { 126 // unlikely, as we are iterating over live services. 127 Log.e(TAG, "can't find package name", e); 128 } 129 final String summary = service.loadLabel(mPm).toString(); 130 final SwitchPreference pref = new SwitchPreference(getPrefContext()); 131 pref.setPersistent(false); 132 pref.setIcon(mIconDrawableFactory.getBadgedIcon(service, service.applicationInfo, 133 UserHandle.getUserId(service.applicationInfo.uid))); 134 if (title != null && !title.equals(summary)) { 135 pref.setTitle(title); 136 pref.setSummary(summary); 137 } else { 138 pref.setTitle(summary); 139 } 140 pref.setKey(cn.flattenToString()); 141 pref.setChecked(isServiceEnabled(cn)); 142 if (managedProfileId != UserHandle.USER_NULL 143 && !mDpm.isNotificationListenerServicePermitted( 144 service.packageName, managedProfileId)) { 145 pref.setSummary(R.string.work_profile_notification_access_blocked_summary); 146 } 147 pref.setOnPreferenceChangeListener(new OnPreferenceChangeListener() { 148 @Override 149 public boolean onPreferenceChange(Preference preference, Object newValue) { 150 final boolean enable = (boolean) newValue; 151 return setEnabled(cn, summary, enable); 152 } 153 }); 154 screen.addPreference(pref); 155 } 156 } 157 158 private int getCurrentUser(int managedProfileId) { 159 if (managedProfileId != UserHandle.USER_NULL) { 160 return managedProfileId; 161 } 162 return UserHandle.myUserId(); 163 } 164 165 protected boolean isServiceEnabled(ComponentName cn) { 166 return mServiceListing.isEnabled(cn); 167 } 168 169 protected boolean setEnabled(ComponentName service, String title, boolean enable) { 170 if (!enable) { 171 // the simple version: disabling 172 mServiceListing.setEnabled(service, false); 173 return true; 174 } else { 175 if (mServiceListing.isEnabled(service)) { 176 return true; // already enabled 177 } 178 // show a scary dialog 179 new ScaryWarningDialogFragment() 180 .setServiceInfo(service, title, this) 181 .show(getFragmentManager(), "dialog"); 182 return false; 183 } 184 } 185 186 protected void enable(ComponentName service) { 187 mServiceListing.setEnabled(service, true); 188 } 189 190 public static class ScaryWarningDialogFragment extends InstrumentedDialogFragment { 191 static final String KEY_COMPONENT = "c"; 192 static final String KEY_LABEL = "l"; 193 194 @Override 195 public int getMetricsCategory() { 196 return MetricsProto.MetricsEvent.DIALOG_SERVICE_ACCESS_WARNING; 197 } 198 199 public ScaryWarningDialogFragment setServiceInfo(ComponentName cn, String label, 200 Fragment target) { 201 Bundle args = new Bundle(); 202 args.putString(KEY_COMPONENT, cn.flattenToString()); 203 args.putString(KEY_LABEL, label); 204 setArguments(args); 205 setTargetFragment(target, 0); 206 return this; 207 } 208 209 @Override 210 public Dialog onCreateDialog(Bundle savedInstanceState) { 211 final Bundle args = getArguments(); 212 final String label = args.getString(KEY_LABEL); 213 final ComponentName cn = ComponentName.unflattenFromString(args 214 .getString(KEY_COMPONENT)); 215 ManagedServiceSettings parent = (ManagedServiceSettings) getTargetFragment(); 216 217 final String title = getResources().getString(parent.mConfig.warningDialogTitle, label); 218 final String summary = getResources().getString(parent.mConfig.warningDialogSummary, 219 label); 220 return new AlertDialog.Builder(getContext()) 221 .setMessage(summary) 222 .setTitle(title) 223 .setCancelable(true) 224 .setPositiveButton(R.string.allow, 225 new DialogInterface.OnClickListener() { 226 public void onClick(DialogInterface dialog, int id) { 227 parent.enable(cn); 228 } 229 }) 230 .setNegativeButton(R.string.deny, 231 new DialogInterface.OnClickListener() { 232 public void onClick(DialogInterface dialog, int id) { 233 // pass 234 } 235 }) 236 .create(); 237 } 238 } 239 240 public static class Config { 241 public String tag; 242 public String setting; 243 public String intentAction; 244 public String permission; 245 public String noun; 246 public int warningDialogTitle; 247 public int warningDialogSummary; 248 public int emptyText; 249 } 250 } 251
