Add option to reset network settings to factory

bug:16161518
Change-Id: I7c0cc58d5385352c6c9af2b27af23a744b5df977

1 files changed, 198 insertions, 0 deletions

diff --git a/src/com/android/settings/ResetNetwork.java b/src/com/android/settings/ResetNetwork.java
new file mode 100644
index 000000000..7767604d9
--- /dev/null
+++ b/src/com/android/settings/ResetNetwork.java
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2015 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 android.app.Activity;
+import android.app.Fragment;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.os.Environment;
+import android.os.SystemProperties;
+import android.os.UserManager;
+import android.preference.Preference;
+import android.preference.PreferenceActivity;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionManager;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.CheckBox;
+import android.widget.LinearLayout;
+import android.widget.Spinner;
+import android.widget.TextView;
+
+import com.android.internal.telephony.PhoneConstants;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Confirm and execute a reset of the device's network settings 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 RESET EVERYTHING" 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 initial screen.
+ */
+public class ResetNetwork extends Fragment {
+    private static final String TAG = "ResetNetwork";
+
+    // Arbitrary to avoid conficts
+    private static final int KEYGUARD_REQUEST = 55;
+
+    private List<SubscriptionInfo> mSubscriptions;
+
+    private View mContentView;
+    private Spinner mSubscriptionSpinner;
+    private Button mInitiateButton;
+
+    /**
+     * Keyguard validation is run using the standard {@link ConfirmLockPattern}
+     * component as a subactivity
+     * @param request the request code to be returned once confirmation finishes
+     * @return true if confirmation launched
+     */
+    private boolean runKeyguardConfirmation(int request) {
+        Resources res = getActivity().getResources();
+        return new ChooseLockSettingsHelper(getActivity(), this).launchConfirmationActivity(request,
+                null, res.getText(R.string.reset_network_gesture_explanation));
+    }
+
+    @Override
+    public 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) {
+            showFinalConfirmation();
+        } else {
+            establishInitialState();
+        }
+    }
+
+    private void showFinalConfirmation() {
+        Bundle args = new Bundle();
+        if (mSubscriptions.size() > 0) {
+            int selectedIndex = mSubscriptionSpinner.getSelectedItemPosition();
+            SubscriptionInfo subscription = mSubscriptions.get(selectedIndex);
+            args.putInt(PhoneConstants.SUBSCRIPTION_KEY, subscription.getSubscriptionId());
+        }
+        ((SettingsActivity) getActivity()).startPreferencePanel(ResetNetworkConfirm.class.getName(),
+                args, R.string.reset_network_confirm_title, null, null, 0);
+    }
+
+    /**
+     * 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 final Button.OnClickListener mInitiateListener = new Button.OnClickListener() {
+
+        @Override
+        public void onClick(View v) {
+            if (!runKeyguardConfirmation(KEYGUARD_REQUEST)) {
+                showFinalConfirmation();
+            }
+        }
+    };
+
+    /**
+     * 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() {
+        mSubscriptionSpinner = (Spinner) mContentView.findViewById(R.id.reset_network_subscription);
+
+        mSubscriptions = SubscriptionManager.from(getActivity()).getActiveSubscriptionInfoList();
+        if (mSubscriptions.size() > 0) {
+            // Get the default subscription in the order of data, voice, sms, first up.
+            int defaultSubscription = SubscriptionManager.getDefaultDataSubId();
+            if (!SubscriptionManager.isUsableSubIdValue(defaultSubscription)) {
+                defaultSubscription = SubscriptionManager.getDefaultVoiceSubId();
+            }
+            if (!SubscriptionManager.isUsableSubIdValue(defaultSubscription)) {
+                defaultSubscription = SubscriptionManager.getDefaultSmsSubId();
+            }
+            if (!SubscriptionManager.isUsableSubIdValue(defaultSubscription)) {
+                defaultSubscription = SubscriptionManager.getDefaultSubId();
+            }
+
+            int selectedIndex = 0;
+            int size = mSubscriptions.size();
+            List<String> subscriptionNames = new ArrayList<>();
+            for (SubscriptionInfo record : mSubscriptions) {
+                if (record.getSubscriptionId() == defaultSubscription) {
+                    // Set the first selected value to the default
+                    selectedIndex = subscriptionNames.size();
+                }
+                String name = record.getDisplayName().toString();
+                if (TextUtils.isEmpty(name)) {
+                    name = record.getNumber();
+                }
+                if (TextUtils.isEmpty(name)) {
+                    name = record.getCarrierName().toString();
+                }
+                if (TextUtils.isEmpty(name)) {
+                    name = String.format("MCC:%s MNC:%s Slot:%s Id:%s", record.getMcc(),
+                            record.getMnc(), record.getSimSlotIndex(), record.getSubscriptionId());
+                }
+                subscriptionNames.add(name);
+            }
+            ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
+                    android.R.layout.simple_spinner_item, subscriptionNames);
+            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            mSubscriptionSpinner.setAdapter(adapter);
+            mSubscriptionSpinner.setSelection(selectedIndex);
+            mSubscriptionSpinner.setVisibility(View.VISIBLE);
+        } else {
+            mSubscriptionSpinner.setVisibility(View.INVISIBLE);
+        }
+        mInitiateButton = (Button) mContentView.findViewById(R.id.initiate_reset_network);
+        mInitiateButton.setOnClickListener(mInitiateListener);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState) {
+        mContentView = inflater.inflate(R.layout.reset_network, null);
+
+        establishInitialState();
+        return mContentView;
+    }
+}