Fragmentize "Factory reset" setting screen.

Split the screen into 2 fragments.

Bug: 3148480

src/com/android/settings/MasterClearConfirm.java

@@ -0,0 +1,95 @@
+/*
+ * 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 com.android.internal.os.storage.ExternalStorageFormatter;
+import com.android.internal.widget.LockPatternUtils;
+
+import android.app.Activity;
+import android.app.Fragment;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.CheckBox;
+
+/**
+ * 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.
+ *
+ * This is the confirmation screen.
+ */
+public class MasterClearConfirm extends Fragment {
+
+    private View mContentView;
+    private boolean mEraseSdCard;
+    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) {
+            if (Utils.isMonkeyRunning()) {
+                return;
+            }
+
+            if (mEraseSdCard) {
+                Intent intent = new Intent(ExternalStorageFormatter.FORMAT_AND_FACTORY_RESET);
+                intent.setComponent(ExternalStorageFormatter.COMPONENT_NAME);
+                getActivity().startService(intent);
+            } else {
+                getActivity().sendBroadcast(new Intent("android.intent.action.MASTER_CLEAR"));
+                // Intent handling is asynchronous -- assume it will happen soon.
+            }
+        }
+    };
+
+    /**
+     * Configure the UI for the final confirmation interaction
+     */
+    private void establishFinalConfirmationState() {
+        mFinalButton = (Button) mContentView.findViewById(R.id.execute_master_clear);
+        mFinalButton.setOnClickListener(mFinalClickListener);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        mContentView = inflater.inflate(R.layout.master_clear_confirm, null);
+        establishFinalConfirmationState();
+        return mContentView;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Bundle args = getArguments();
+        mEraseSdCard = args != null ? args.getBoolean(MasterClear.ERASE_EXTERNAL_EXTRA) : false;
+    }
+}