auto import from //depot/cupcake/@135843
diff --git a/src/com/android/settings/MasterClear.java b/src/com/android/settings/MasterClear.java
new file mode 100644
index 0000000..38ad608
--- /dev/null
+++ b/src/com/android/settings/MasterClear.java
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2008 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 com.android.internal.widget.LockPatternUtils;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.ICheckinService;
+import android.os.ServiceManager;
+import android.os.SystemProperties;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.Button;
+
+/**
+ * Confirm and execute a reset of the device to a clean "just out of the box"
+ * state. Multiple confirmations are required: first, a general "are you sure
+ * you want to do this?" prompt, followed by a keyguard pattern trace if the user
+ * has defined one, followed by a final strongly-worded "THIS WILL ERASE EVERYTHING
+ * ON THE PHONE" prompt. If at any time the phone is allowed to go to sleep, is
+ * locked, et cetera, then the confirmation sequence is abandoned.
+ */
+public class MasterClear extends Activity {
+
+ private static final int KEYGUARD_REQUEST = 55;
+
+ private LayoutInflater mInflater;
+ private LockPatternUtils mLockUtils;
+
+ private View mInitialView;
+ private Button mInitiateButton;
+
+ private View mFinalView;
+ private Button mFinalButton;
+
+ /**
+ * The user has gone through the multiple confirmation, so now we go ahead
+ * and invoke the Checkin Service to reset the device to its factory-default
+ * state (rebooting in the process).
+ */
+ private Button.OnClickListener mFinalClickListener = new Button.OnClickListener() {
+ public void onClick(View v) {
+
+ // Those monkeys kept committing suicide, so we add this property
+ // to disable going through with the master clear
+ if (!TextUtils.isEmpty(SystemProperties.get("ro.monkey"))) {
+ return;
+ }
+
+ ICheckinService service =
+ ICheckinService.Stub.asInterface(ServiceManager.getService("checkin"));
+ if (service != null) {
+ try {
+ // This RPC should never return
+ service.masterClear();
+ } catch (android.os.RemoteException e) {
+ // Intentionally blank - there's nothing we can do here
+ Log.w("MasterClear", "Unable to invoke ICheckinService.masterClear()");
+ }
+ } else {
+ Log.w("MasterClear", "Unable to locate ICheckinService");
+ }
+
+ /* If we reach this point, the master clear didn't happen -- the
+ * service might have been unregistered with the ServiceManager,
+ * the RPC might have thrown an exception, or for some reason
+ * the implementation of masterClear() may have returned instead
+ * of resetting the device.
+ */
+ new AlertDialog.Builder(MasterClear.this)
+ .setMessage(getText(R.string.master_clear_failed))
+ .setPositiveButton(getText(android.R.string.ok), null)
+ .show();
+ }
+ };
+
+ /**
+ * Keyguard validation is run using the standard {@link ConfirmLockPattern}
+ * component as a subactivity
+ */
+ private void runKeyguardConfirmation() {
+ final Intent intent = new Intent();
+ intent.setClassName("com.android.settings",
+ "com.android.settings.ConfirmLockPattern");
+ // supply header and footer text in the intent
+ intent.putExtra(ConfirmLockPattern.HEADER_TEXT,
+ getText(R.string.master_clear_gesture_prompt));
+ intent.putExtra(ConfirmLockPattern.FOOTER_TEXT,
+ getText(R.string.master_clear_gesture_explanation));
+ startActivityForResult(intent, KEYGUARD_REQUEST);
+ }
+
+ @Override
+ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+ super.onActivityResult(requestCode, resultCode, data);
+
+ if (requestCode != KEYGUARD_REQUEST) {
+ return;
+ }
+
+ // If the user entered a valid keyguard trace, present the final
+ // confirmation prompt; otherwise, go back to the initial state.
+ if (resultCode == Activity.RESULT_OK) {
+ establishFinalConfirmationState();
+ } else {
+ establishInitialState();
+ }
+ }
+
+ /**
+ * If the user clicks to begin the reset sequence, we next require a
+ * keyguard confirmation if the user has currently enabled one. If there
+ * is no keyguard available, we simply go to the final confirmation prompt.
+ */
+ private Button.OnClickListener mInitiateListener = new Button.OnClickListener() {
+ public void onClick(View v) {
+ if (mLockUtils.isLockPatternEnabled()) {
+ runKeyguardConfirmation();
+ } else {
+ establishFinalConfirmationState();
+ }
+ }
+ };
+
+ /**
+ * Configure the UI for the final confirmation interaction
+ */
+ private void establishFinalConfirmationState() {
+ if (mFinalView == null) {
+ mFinalView = mInflater.inflate(R.layout.master_clear_final, null);
+ mFinalButton =
+ (Button) mFinalView.findViewById(R.id.execute_master_clear);
+ mFinalButton.setOnClickListener(mFinalClickListener);
+ }
+
+ setContentView(mFinalView);
+ }
+
+ /**
+ * In its initial state, the activity presents a button for the user to
+ * click in order to initiate a confirmation sequence. This method is
+ * called from various other points in the code to reset the activity to
+ * this base state.
+ *
+ * <p>Reinflating views from resources is expensive and prevents us from
+ * caching widget pointers, so we use a single-inflate pattern: we lazy-
+ * inflate each view, caching all of the widget pointers we'll need at the
+ * time, then simply reuse the inflated views directly whenever we need
+ * to change contents.
+ */
+ private void establishInitialState() {
+ if (mInitialView == null) {
+ mInitialView = mInflater.inflate(R.layout.master_clear_primary, null);
+ mInitiateButton =
+ (Button) mInitialView.findViewById(R.id.initiate_master_clear);
+ mInitiateButton.setOnClickListener(mInitiateListener);
+ }
+
+ setContentView(mInitialView);
+ }
+
+ @Override
+ protected void onCreate(Bundle savedState) {
+ super.onCreate(savedState);
+
+ mInitialView = null;
+ mFinalView = null;
+ mInflater = LayoutInflater.from(this);
+ mLockUtils = new LockPatternUtils(getContentResolver());
+
+ establishInitialState();
+ }
+
+ /** Abandon all progress through the confirmation sequence by returning
+ * to the initial view any time the activity is interrupted (e.g. by
+ * idle timeout).
+ */
+ @Override
+ public void onPause() {
+ super.onPause();
+
+ establishInitialState();
+ }
+
+}