2 * Copyright (C) 2008 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.settings;
19 import android.accounts.Account;
20 import android.accounts.AccountManager;
21 import android.accounts.AuthenticatorDescription;
22 import android.app.Activity;
23 import android.app.FragmentManager;
24 import android.content.Context;
25 import android.content.Intent;
26 import android.content.pm.PackageManager;
27 import android.content.pm.UserInfo;
28 import android.content.res.Resources;
29 import android.graphics.drawable.Drawable;
30 import android.os.Bundle;
31 import android.os.Environment;
32 import android.os.SystemProperties;
33 import android.os.UserHandle;
34 import android.os.UserManager;
35 import android.support.annotation.VisibleForTesting;
36 import android.util.Log;
37 import android.view.LayoutInflater;
38 import android.view.View;
39 import android.view.View.OnScrollChangeListener;
40 import android.view.ViewGroup;
41 import android.view.ViewTreeObserver.OnGlobalLayoutListener;
42 import android.widget.Button;
43 import android.widget.CheckBox;
44 import android.widget.ImageView;
45 import android.widget.LinearLayout;
46 import android.widget.ScrollView;
47 import android.widget.TextView;
49 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
50 import com.android.settings.widget.CarrierDemoPasswordDialogFragment;
51 import com.android.settingslib.RestrictedLockUtils;
53 import java.util.List;
55 import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
58 * Confirm and execute a reset of the device to a clean "just out of the box"
59 * state. Multiple confirmations are required: first, a general "are you sure
60 * you want to do this?" prompt, followed by a keyguard pattern trace if the user
61 * has defined one, followed by a final strongly-worded "THIS WILL ERASE EVERYTHING
62 * ON THE PHONE" prompt. If at any time the phone is allowed to go to sleep, is
63 * locked, et cetera, then the confirmation sequence is abandoned.
65 * This is the initial screen.
67 public class MasterClear extends OptionsMenuFragment
68 implements CarrierDemoPasswordDialogFragment.Callback {
69 private static final String TAG = "MasterClear";
71 private static final int KEYGUARD_REQUEST = 55;
73 static final String ERASE_EXTERNAL_EXTRA = "erase_sd";
75 private View mContentView;
76 private Button mInitiateButton;
77 private View mExternalStorageContainer;
78 private CheckBox mExternalStorage;
79 private ScrollView mScrollView;
81 private final OnGlobalLayoutListener mOnGlobalLayoutListener = new OnGlobalLayoutListener() {
83 public void onGlobalLayout() {
84 mScrollView.getViewTreeObserver().removeOnGlobalLayoutListener(mOnGlobalLayoutListener);
85 mInitiateButton.setEnabled(hasReachedBottom(mScrollView));
90 * Keyguard validation is run using the standard {@link ConfirmLockPattern}
91 * component as a subactivity
92 * @param request the request code to be returned once confirmation finishes
93 * @return true if confirmation launched
95 private boolean runKeyguardConfirmation(int request) {
96 Resources res = getActivity().getResources();
97 return new ChooseLockSettingsHelper(getActivity(), this).launchConfirmationActivity(
98 request, res.getText(R.string.master_clear_title));
102 public void onActivityResult(int requestCode, int resultCode, Intent data) {
103 super.onActivityResult(requestCode, resultCode, data);
105 if (requestCode != KEYGUARD_REQUEST) {
109 // If the user entered a valid keyguard trace, present the final
110 // confirmation prompt; otherwise, go back to the initial state.
111 if (resultCode == Activity.RESULT_OK) {
112 showFinalConfirmation();
114 establishInitialState();
118 private void showFinalConfirmation() {
119 Bundle args = new Bundle();
120 args.putBoolean(ERASE_EXTERNAL_EXTRA, mExternalStorage.isChecked());
121 ((SettingsActivity) getActivity()).startPreferencePanel(
122 this, MasterClearConfirm.class.getName(),
123 args, R.string.master_clear_confirm_title, null, null, 0);
127 * If the user clicks to begin the reset sequence, we next require a
128 * keyguard confirmation if the user has currently enabled one. If there
129 * is no keyguard available, we simply go to the final confirmation prompt.
131 private final Button.OnClickListener mInitiateListener = new Button.OnClickListener() {
133 public void onClick(View v) {
134 if ( Utils.isCarrierDemoUser(v.getContext())) {
135 // Require the carrier password before displaying the final confirmation.
136 final FragmentManager fm = getChildFragmentManager();
137 if (fm != null && !fm.isDestroyed()) {
138 new CarrierDemoPasswordDialogFragment().show(fm, null /* tag */);
140 } else if (!runKeyguardConfirmation(KEYGUARD_REQUEST)) {
141 showFinalConfirmation();
147 public void onPasswordVerified() {
148 showFinalConfirmation();
152 * In its initial state, the activity presents a button for the user to
153 * click in order to initiate a confirmation sequence. This method is
154 * called from various other points in the code to reset the activity to
157 * <p>Reinflating views from resources is expensive and prevents us from
158 * caching widget pointers, so we use a single-inflate pattern: we lazy-
159 * inflate each view, caching all of the widget pointers we'll need at the
160 * time, then simply reuse the inflated views directly whenever we need
161 * to change contents.
163 private void establishInitialState() {
164 mInitiateButton = (Button) mContentView.findViewById(R.id.initiate_master_clear);
165 mInitiateButton.setOnClickListener(mInitiateListener);
166 mExternalStorageContainer = mContentView.findViewById(R.id.erase_external_container);
167 mExternalStorage = (CheckBox) mContentView.findViewById(R.id.erase_external);
168 mScrollView = (ScrollView) mContentView.findViewById(R.id.master_clear_scrollview);
171 * If the external storage is emulated, it will be erased with a factory
172 * reset at any rate. There is no need to have a separate option until
173 * we have a factory reset that only erases some directories and not
174 * others. Likewise, if it's non-removable storage, it could potentially have been
175 * encrypted, and will also need to be wiped.
177 boolean isExtStorageEmulated = Environment.isExternalStorageEmulated();
178 if (isExtStorageEmulated
179 || (!Environment.isExternalStorageRemovable() && isExtStorageEncrypted())) {
180 mExternalStorageContainer.setVisibility(View.GONE);
182 final View externalOption = mContentView.findViewById(R.id.erase_external_option_text);
183 externalOption.setVisibility(View.GONE);
185 final View externalAlsoErased = mContentView.findViewById(R.id.also_erases_external);
186 externalAlsoErased.setVisibility(View.VISIBLE);
188 // If it's not emulated, it is on a separate partition but it means we're doing
189 // a force wipe due to encryption.
190 mExternalStorage.setChecked(!isExtStorageEmulated);
192 mExternalStorageContainer.setOnClickListener(new View.OnClickListener() {
195 public void onClick(View v) {
196 mExternalStorage.toggle();
201 final UserManager um = (UserManager) getActivity().getSystemService(Context.USER_SERVICE);
203 StringBuffer contentDescription = new StringBuffer();
204 View masterClearContainer = mContentView.findViewById(R.id.master_clear_container);
205 getContentDescription(masterClearContainer, contentDescription);
206 masterClearContainer.setContentDescription(contentDescription);
208 // Set the status of initiateButton based on scrollview
209 mScrollView.setOnScrollChangeListener(new OnScrollChangeListener() {
211 public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX,
213 if (v instanceof ScrollView && hasReachedBottom((ScrollView) v)) {
214 mInitiateButton.setEnabled(true);
219 // Set the initial state of the initiateButton
220 mScrollView.getViewTreeObserver().addOnGlobalLayoutListener(mOnGlobalLayoutListener);
224 boolean hasReachedBottom(final ScrollView scrollView) {
225 if (scrollView.getChildCount() < 1) {
229 final View view = scrollView.getChildAt(0);
230 final int diff = view.getBottom() - (scrollView.getHeight() + scrollView.getScrollY());
235 private void getContentDescription(View v, StringBuffer description) {
236 if (v.getVisibility() != View.VISIBLE) {
239 if (v instanceof ViewGroup) {
240 ViewGroup vGroup = (ViewGroup) v;
241 for (int i = 0; i < vGroup.getChildCount(); i++) {
242 View nextChild = vGroup.getChildAt(i);
243 getContentDescription(nextChild, description);
245 } else if (v instanceof TextView) {
246 TextView vText = (TextView) v;
247 description.append(vText.getText());
248 description.append(","); // Allow Talkback to pause between sections.
252 private boolean isExtStorageEncrypted() {
253 String state = SystemProperties.get("vold.decrypt");
254 return !"".equals(state);
257 private void loadAccountList(final UserManager um) {
258 View accountsLabel = mContentView.findViewById(R.id.accounts_label);
259 LinearLayout contents = (LinearLayout)mContentView.findViewById(R.id.accounts);
260 contents.removeAllViews();
262 Context context = getActivity();
263 final List<UserInfo> profiles = um.getProfiles(UserHandle.myUserId());
264 final int profilesSize = profiles.size();
266 AccountManager mgr = AccountManager.get(context);
268 LayoutInflater inflater = (LayoutInflater)context.getSystemService(
269 Context.LAYOUT_INFLATER_SERVICE);
271 int accountsCount = 0;
272 for (int profileIndex = 0; profileIndex < profilesSize; profileIndex++) {
273 final UserInfo userInfo = profiles.get(profileIndex);
274 final int profileId = userInfo.id;
275 final UserHandle userHandle = new UserHandle(profileId);
276 Account[] accounts = mgr.getAccountsAsUser(profileId);
277 final int N = accounts.length;
283 AuthenticatorDescription[] descs = AccountManager.get(context)
284 .getAuthenticatorTypesAsUser(profileId);
285 final int M = descs.length;
287 if (profilesSize > 1) {
288 View titleView = Utils.inflateCategoryHeader(inflater, contents);
289 final TextView titleText = (TextView) titleView.findViewById(android.R.id.title);
290 titleText.setText(userInfo.isManagedProfile() ? R.string.category_work
291 : R.string.category_personal);
292 contents.addView(titleView);
295 for (int i = 0; i < N; i++) {
296 Account account = accounts[i];
297 AuthenticatorDescription desc = null;
298 for (int j = 0; j < M; j++) {
299 if (account.type.equals(descs[j].type)) {
305 Log.w(TAG, "No descriptor for account name=" + account.name
306 + " type=" + account.type);
309 Drawable icon = null;
311 if (desc.iconId != 0) {
312 Context authContext = context.createPackageContextAsUser(desc.packageName,
314 icon = context.getPackageManager().getUserBadgedIcon(
315 authContext.getDrawable(desc.iconId), userHandle);
317 } catch (PackageManager.NameNotFoundException e) {
318 Log.w(TAG, "Bad package name for account type " + desc.type);
319 } catch (Resources.NotFoundException e) {
320 Log.w(TAG, "Invalid icon id for account type " + desc.type, e);
323 icon = context.getPackageManager().getDefaultActivityIcon();
326 View child = inflater.inflate(R.layout.master_clear_account, contents, false);
327 ((ImageView) child.findViewById(android.R.id.icon)).setImageDrawable(icon);
328 ((TextView) child.findViewById(android.R.id.title)).setText(account.name);
329 contents.addView(child);
333 if (accountsCount > 0) {
334 accountsLabel.setVisibility(View.VISIBLE);
335 contents.setVisibility(View.VISIBLE);
337 // Checking for all other users and their profiles if any.
338 View otherUsers = mContentView.findViewById(R.id.other_users_present);
339 final boolean hasOtherUsers = (um.getUserCount() - profilesSize) > 0;
340 otherUsers.setVisibility(hasOtherUsers ? View.VISIBLE : View.GONE);
344 public View onCreateView(LayoutInflater inflater, ViewGroup container,
345 Bundle savedInstanceState) {
346 final Context context = getContext();
347 final EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(context,
348 UserManager.DISALLOW_FACTORY_RESET, UserHandle.myUserId());
349 final UserManager um = UserManager.get(context);
350 final boolean disallow = !um.isAdminUser() || RestrictedLockUtils.hasBaseUserRestriction(
351 context, UserManager.DISALLOW_FACTORY_RESET, UserHandle.myUserId());
352 if (disallow && !Utils.isCarrierDemoUser(context)) {
353 return inflater.inflate(R.layout.master_clear_disallowed_screen, null);
354 } else if (admin != null) {
355 View view = inflater.inflate(R.layout.admin_support_details_empty_view, null);
356 ShowAdminSupportDetailsDialog.setAdminSupportDetails(getActivity(), view, admin, false);
357 view.setVisibility(View.VISIBLE);
361 mContentView = inflater.inflate(R.layout.master_clear, null);
363 establishInitialState();
368 public int getMetricsCategory() {
369 return MetricsEvent.MASTER_CLEAR;