1 /* 2 * Copyright (C) 2008 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; 18 19 import android.accounts.Account; 20 import android.accounts.AccountManager; 21 import android.accounts.AuthenticatorDescription; 22 import android.app.Activity; 23 import android.content.Context; 24 import android.content.Intent; 25 import android.content.pm.PackageManager; 26 import android.content.pm.UserInfo; 27 import android.content.res.Resources; 28 import android.graphics.drawable.Drawable; 29 import android.os.Bundle; 30 import android.os.Environment; 31 import android.os.SystemProperties; 32 import android.os.UserHandle; 33 import android.os.UserManager; 34 import android.util.Log; 35 import android.view.LayoutInflater; 36 import android.view.View; 37 import android.view.ViewGroup; 38 import android.widget.Button; 39 import android.widget.CheckBox; 40 import android.widget.LinearLayout; 41 import android.widget.TextView; 42 43 import com.android.internal.logging.MetricsProto.MetricsEvent; 44 import com.android.settingslib.RestrictedLockUtils; 45 46 import java.util.List; 47 48 import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin; 49 50 /** 51 * Confirm and execute a reset of the device to a clean "just out of the box" 52 * state. Multiple confirmations are required: first, a general "are you sure 53 * you want to do this?" prompt, followed by a keyguard pattern trace if the user 54 * has defined one, followed by a final strongly-worded "THIS WILL ERASE EVERYTHING 55 * ON THE PHONE" prompt. If at any time the phone is allowed to go to sleep, is 56 * locked, et cetera, then the confirmation sequence is abandoned. 57 * 58 * This is the initial screen. 59 */ 60 public class MasterClear extends OptionsMenuFragment { 61 private static final String TAG = "MasterClear"; 62 63 private static final int KEYGUARD_REQUEST = 55; 64 65 static final String ERASE_EXTERNAL_EXTRA = "erase_sd"; 66 67 private View mContentView; 68 private Button mInitiateButton; 69 private View mExternalStorageContainer; 70 private CheckBox mExternalStorage; 71 72 /** 73 * Keyguard validation is run using the standard {@link ConfirmLockPattern} 74 * component as a subactivity 75 * @param request the request code to be returned once confirmation finishes 76 * @return true if confirmation launched 77 */ 78 private boolean runKeyguardConfirmation(int request) { 79 Resources res = getActivity().getResources(); 80 return new ChooseLockSettingsHelper(getActivity(), this).launchConfirmationActivity( 81 request, res.getText(R.string.master_clear_title)); 82 } 83 84 @Override 85 public void onActivityResult(int requestCode, int resultCode, Intent data) { 86 super.onActivityResult(requestCode, resultCode, data); 87 88 if (requestCode != KEYGUARD_REQUEST) { 89 return; 90 } 91 92 // If the user entered a valid keyguard trace, present the final 93 // confirmation prompt; otherwise, go back to the initial state. 94 if (resultCode == Activity.RESULT_OK) { 95 showFinalConfirmation(); 96 } else { 97 establishInitialState(); 98 } 99 } 100 101 private void showFinalConfirmation() { 102 Bundle args = new Bundle(); 103 args.putBoolean(ERASE_EXTERNAL_EXTRA, mExternalStorage.isChecked()); 104 ((SettingsActivity) getActivity()).startPreferencePanel(MasterClearConfirm.class.getName(), 105 args, R.string.master_clear_confirm_title, null, null, 0); 106 } 107 108 /** 109 * If the user clicks to begin the reset sequence, we next require a 110 * keyguard confirmation if the user has currently enabled one. If there 111 * is no keyguard available, we simply go to the final confirmation prompt. 112 */ 113 private final Button.OnClickListener mInitiateListener = new Button.OnClickListener() { 114 115 public void onClick(View v) { 116 if (!runKeyguardConfirmation(KEYGUARD_REQUEST)) { 117 showFinalConfirmation(); 118 } 119 } 120 }; 121 122 /** 123 * In its initial state, the activity presents a button for the user to 124 * click in order to initiate a confirmation sequence. This method is 125 * called from various other points in the code to reset the activity to 126 * this base state. 127 * 128 * <p>Reinflating views from resources is expensive and prevents us from 129 * caching widget pointers, so we use a single-inflate pattern: we lazy- 130 * inflate each view, caching all of the widget pointers we'll need at the 131 * time, then simply reuse the inflated views directly whenever we need 132 * to change contents. 133 */ 134 private void establishInitialState() { 135 mInitiateButton = (Button) mContentView.findViewById(R.id.initiate_master_clear); 136 mInitiateButton.setOnClickListener(mInitiateListener); 137 mExternalStorageContainer = mContentView.findViewById(R.id.erase_external_container); 138 mExternalStorage = (CheckBox) mContentView.findViewById(R.id.erase_external); 139 140 /* 141 * If the external storage is emulated, it will be erased with a factory 142 * reset at any rate. There is no need to have a separate option until 143 * we have a factory reset that only erases some directories and not 144 * others. Likewise, if it's non-removable storage, it could potentially have been 145 * encrypted, and will also need to be wiped. 146 */ 147 boolean isExtStorageEmulated = Environment.isExternalStorageEmulated(); 148 if (isExtStorageEmulated 149 || (!Environment.isExternalStorageRemovable() && isExtStorageEncrypted())) { 150 mExternalStorageContainer.setVisibility(View.GONE); 151 152 final View externalOption = mContentView.findViewById(R.id.erase_external_option_text); 153 externalOption.setVisibility(View.GONE); 154 155 final View externalAlsoErased = mContentView.findViewById(R.id.also_erases_external); 156 externalAlsoErased.setVisibility(View.VISIBLE); 157 158 // If it's not emulated, it is on a separate partition but it means we're doing 159 // a force wipe due to encryption. 160 mExternalStorage.setChecked(!isExtStorageEmulated); 161 } else { 162 mExternalStorageContainer.setOnClickListener(new View.OnClickListener() { 163 164 @Override 165 public void onClick(View v) { 166 mExternalStorage.toggle(); 167 } 168 }); 169 } 170 171 final UserManager um = (UserManager) getActivity().getSystemService(Context.USER_SERVICE); 172 loadAccountList(um); 173 StringBuffer contentDescription = new StringBuffer(); 174 View masterClearContainer = mContentView.findViewById(R.id.master_clear_container); 175 getContentDescription(masterClearContainer, contentDescription); 176 masterClearContainer.setContentDescription(contentDescription); 177 } 178 179 private void getContentDescription(View v, StringBuffer description) { 180 if (v.getVisibility() != View.VISIBLE) { 181 return; 182 } 183 if (v instanceof ViewGroup) { 184 ViewGroup vGroup = (ViewGroup) v; 185 for (int i = 0; i < vGroup.getChildCount(); i++) { 186 View nextChild = vGroup.getChildAt(i); 187 getContentDescription(nextChild, description); 188 } 189 } else if (v instanceof TextView) { 190 TextView vText = (TextView) v; 191 description.append(vText.getText()); 192 description.append(","); // Allow Talkback to pause between sections. 193 } 194 } 195 196 private boolean isExtStorageEncrypted() { 197 String state = SystemProperties.get("vold.decrypt"); 198 return !"".equals(state); 199 } 200 201 private void loadAccountList(final UserManager um) { 202 View accountsLabel = mContentView.findViewById(R.id.accounts_label); 203 LinearLayout contents = (LinearLayout)mContentView.findViewById(R.id.accounts); 204 contents.removeAllViews(); 205 206 Context context = getActivity(); 207 final List<UserInfo> profiles = um.getProfiles(UserHandle.myUserId()); 208 final int profilesSize = profiles.size(); 209 210 AccountManager mgr = AccountManager.get(context); 211 212 LayoutInflater inflater = (LayoutInflater)context.getSystemService( 213 Context.LAYOUT_INFLATER_SERVICE); 214 215 int accountsCount = 0; 216 for (int profileIndex = 0; profileIndex < profilesSize; profileIndex++) { 217 final UserInfo userInfo = profiles.get(profileIndex); 218 final int profileId = userInfo.id; 219 final UserHandle userHandle = new UserHandle(profileId); 220 Account[] accounts = mgr.getAccountsAsUser(profileId); 221 final int N = accounts.length; 222 if (N == 0) { 223 continue; 224 } 225 accountsCount += N; 226 227 AuthenticatorDescription[] descs = AccountManager.get(context) 228 .getAuthenticatorTypesAsUser(profileId); 229 final int M = descs.length; 230 231 View titleView = Utils.inflateCategoryHeader(inflater, contents); 232 final TextView titleText = (TextView) titleView.findViewById(android.R.id.title); 233 titleText.setText(userInfo.isManagedProfile() ? R.string.category_work 234 : R.string.category_personal); 235 contents.addView(titleView); 236 237 for (int i = 0; i < N; i++) { 238 Account account = accounts[i]; 239 AuthenticatorDescription desc = null; 240 for (int j = 0; j < M; j++) { 241 if (account.type.equals(descs[j].type)) { 242 desc = descs[j]; 243 break; 244 } 245 } 246 if (desc == null) { 247 Log.w(TAG, "No descriptor for account name=" + account.name 248 + " type=" + account.type); 249 continue; 250 } 251 Drawable icon = null; 252 try { 253 if (desc.iconId != 0) { 254 Context authContext = context.createPackageContextAsUser(desc.packageName, 255 0, userHandle); 256 icon = context.getPackageManager().getUserBadgedIcon( 257 authContext.getDrawable(desc.iconId), userHandle); 258 } 259 } catch (PackageManager.NameNotFoundException e) { 260 Log.w(TAG, "Bad package name for account type " + desc.type); 261 } catch (Resources.NotFoundException e) { 262 Log.w(TAG, "Invalid icon id for account type " + desc.type, e); 263 } 264 if (icon == null) { 265 icon = context.getPackageManager().getDefaultActivityIcon(); 266 } 267 268 TextView child = (TextView)inflater.inflate(R.layout.master_clear_account, 269 contents, false); 270 child.setText(account.name); 271 child.setCompoundDrawablesWithIntrinsicBounds(icon, null, null, null); 272 contents.addView(child); 273 } 274 } 275 276 if (accountsCount > 0) { 277 accountsLabel.setVisibility(View.VISIBLE); 278 contents.setVisibility(View.VISIBLE); 279 } 280 // Checking for all other users and their profiles if any. 281 View otherUsers = mContentView.findViewById(R.id.other_users_present); 282 final boolean hasOtherUsers = (um.getUserCount() - profilesSize) > 0; 283 otherUsers.setVisibility(hasOtherUsers ? View.VISIBLE : View.GONE); 284 } 285 286 @Override 287 public View onCreateView(LayoutInflater inflater, ViewGroup container, 288 Bundle savedInstanceState) { 289 final EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced( 290 getActivity(), UserManager.DISALLOW_FACTORY_RESET, UserHandle.myUserId()); 291 final UserManager um = UserManager.get(getActivity()); 292 if (!um.isAdminUser() || RestrictedLockUtils.hasBaseUserRestriction(getActivity(), 293 UserManager.DISALLOW_FACTORY_RESET, UserHandle.myUserId())) { 294 return inflater.inflate(R.layout.master_clear_disallowed_screen, null); 295 } else if (admin != null) { 296 View view = inflater.inflate(R.layout.admin_support_details_empty_view, null); 297 ShowAdminSupportDetailsDialog.setAdminSupportDetails(getActivity(), view, admin, false); 298 view.setVisibility(View.VISIBLE); 299 return view; 300 } 301 302 mContentView = inflater.inflate(R.layout.master_clear, null); 303 304 establishInitialState(); 305 return mContentView; 306 } 307 308 @Override 309 protected int getMetricsCategory() { 310 return MetricsEvent.MASTER_CLEAR; 311 } 312 } 313
