From 40aca2ceb463eed16960df325559786ece655311 Mon Sep 17 00:00:00 2001
From: Xiaohui Chen <xiaohuic@google.com>
Date: Thu, 3 Sep 2015 11:29:45 -0700
Subject: [PATCH] Remove dead Nsd checkbox

It seems to be dead from few years ago. This cl just cleans things up.
See b/6449478 for context.

Change-Id: Ida5eca16df88c866d3557e12dcde8884706810c6
---
 res/values/strings.xml                        |  6 --
 res/xml/wireless_settings.xml                 |  6 --
 src/com/android/settings/NsdEnabler.java      | 85 -------------------
 .../android/settings/WirelessSettings.java    | 17 ----
 4 files changed, 114 deletions(-)
 delete mode 100644 src/com/android/settings/NsdEnabler.java

diff --git a/res/values/strings.xml b/res/values/strings.xml
index da2d24b3c36..89de03c4f22 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -1386,12 +1386,6 @@
     <!-- Explanation of the Android Beam feature in the Android Beam settings panel. The use of "beam" here is as a verb and not considered trademarked. [CHAR LIMIT=NONE] -->
     <string name="android_beam_explained">When this feature is turned on, you can beam app content to another NFC-capable device by holding the devices close together. For example, you can beam Browser pages, YouTube videos, People contacts, and more.\n\nJust bring the devices together (typically back to back) and then touch your screen. The app determines what gets beamed.</string>
 
-    <!-- Network service discovery settings -->
-    <!-- Used in the 1st-level settings screen to turn on NSD -->
-    <string name="nsd_quick_toggle_title">Network service discovery</string>
-    <!-- Description of NFC in the 1st level settings screen. [CHAR LIMIT=NONE] -->
-    <string name="nsd_quick_toggle_summary">Allow apps on other devices to discover apps on this device</string>
-
     <!-- Wi-Fi Settings --> <skip />
     <!-- Used in the 1st-level settings screen to turn on Wi-Fi -->
     <string name="wifi_quick_toggle_title">Wi\u2011Fi</string>
diff --git a/res/xml/wireless_settings.xml b/res/xml/wireless_settings.xml
index f08de5e826c..96f26ac3d25 100644
--- a/res/xml/wireless_settings.xml
+++ b/res/xml/wireless_settings.xml
@@ -76,12 +76,6 @@
             android:targetClass="com.android.settings.wimax.WimaxSettings" />
     </PreferenceScreen>
 
-    <SwitchPreference
-        android:key="toggle_nsd"
-        android:title="@string/nsd_quick_toggle_title"
-        android:summary="@string/nsd_quick_toggle_summary"
-        android:persistent="false" />
-
     <PreferenceScreen
         android:fragment="com.android.settings.ProxySelector"
         android:key="proxy_settings"
diff --git a/src/com/android/settings/NsdEnabler.java b/src/com/android/settings/NsdEnabler.java
deleted file mode 100644
index f638bc382fb..00000000000
--- a/src/com/android/settings/NsdEnabler.java
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Copyright (C) 2012 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.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.net.nsd.NsdManager;
-import android.preference.Preference;
-
-import android.preference.SwitchPreference;
-
-/**
- * NsdEnabler is a helper to manage network service discovery on/off checkbox state.
- */
-public class NsdEnabler implements Preference.OnPreferenceChangeListener {
-    private final Context mContext;
-    private final SwitchPreference mSwitchPreference;
-    private final IntentFilter mIntentFilter;
-    private NsdManager mNsdManager;
-
-    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            String action = intent.getAction();
-            if (NsdManager.ACTION_NSD_STATE_CHANGED.equals(action)) {
-                handleNsdStateChanged(intent.getIntExtra(NsdManager.EXTRA_NSD_STATE,
-                        NsdManager.NSD_STATE_DISABLED));
-            }
-        }
-    };
-
-    public NsdEnabler(Context context, SwitchPreference pref) {
-        mContext = context;
-        mSwitchPreference = pref;
-        mNsdManager = (NsdManager) mContext.getSystemService(Context.NSD_SERVICE);
-        mIntentFilter = new IntentFilter(NsdManager.ACTION_NSD_STATE_CHANGED);
-    }
-
-    public void resume() {
-        mContext.registerReceiver(mReceiver, mIntentFilter);
-        mSwitchPreference.setOnPreferenceChangeListener(this);
-    }
-
-    public void pause() {
-        mContext.unregisterReceiver(mReceiver);
-        mSwitchPreference.setOnPreferenceChangeListener(null);
-    }
-
-    public boolean onPreferenceChange(Preference preference, Object value) {
-
-        final boolean desiredState = (Boolean) value;
-        mSwitchPreference.setEnabled(false);
-        mNsdManager.setEnabled(desiredState);
-        return false;
-    }
-
-    private void handleNsdStateChanged(int newState) {
-        switch (newState) {
-            case NsdManager.NSD_STATE_DISABLED:
-                mSwitchPreference.setChecked(false);
-                mSwitchPreference.setEnabled(true);
-                break;
-            case NsdManager.NSD_STATE_ENABLED:
-                mSwitchPreference.setChecked(true);
-                mSwitchPreference.setEnabled(true);
-                break;
-        }
-    }
-}
diff --git a/src/com/android/settings/WirelessSettings.java b/src/com/android/settings/WirelessSettings.java
index 78995b534a9..c92e8c57fbe 100644
--- a/src/com/android/settings/WirelessSettings.java
+++ b/src/com/android/settings/WirelessSettings.java
@@ -26,7 +26,6 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.PackageManager;
-import android.content.pm.UserInfo;
 import android.content.res.Resources;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
@@ -35,7 +34,6 @@ import android.nfc.NfcAdapter;
 import android.nfc.NfcManager;
 import android.os.Bundle;
 import android.os.SystemProperties;
-import android.os.UserHandle;
 import android.os.UserManager;
 import android.preference.Preference;
 import android.preference.PreferenceScreen;
@@ -70,7 +68,6 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
     private static final String KEY_PROXY_SETTINGS = "proxy_settings";
     private static final String KEY_MOBILE_NETWORK_SETTINGS = "mobile_network_settings";
     private static final String KEY_MANAGE_MOBILE_PLAN = "manage_mobile_plan";
-    private static final String KEY_TOGGLE_NSD = "toggle_nsd"; //network service discovery
     private static final String KEY_CELL_BROADCAST_SETTINGS = "cell_broadcast_settings";
     private static final String KEY_WFC_SETTINGS = "wifi_calling_settings";
 
@@ -81,7 +78,6 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
     private SwitchPreference mAirplaneModePreference;
     private NfcEnabler mNfcEnabler;
     private NfcAdapter mNfcAdapter;
-    private NsdEnabler mNsdEnabler;
 
     private ConnectivityManager mCm;
     private TelephonyManager mTm;
@@ -232,17 +228,12 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
         mAirplaneModePreference = (SwitchPreference) findPreference(KEY_TOGGLE_AIRPLANE);
         SwitchPreference nfc = (SwitchPreference) findPreference(KEY_TOGGLE_NFC);
         PreferenceScreen androidBeam = (PreferenceScreen) findPreference(KEY_ANDROID_BEAM_SETTINGS);
-        SwitchPreference nsd = (SwitchPreference) findPreference(KEY_TOGGLE_NSD);
 
         mAirplaneModeEnabler = new AirplaneModeEnabler(activity, mAirplaneModePreference);
         mNfcEnabler = new NfcEnabler(activity, nfc, androidBeam);
 
         mButtonWfc = (PreferenceScreen) findPreference(KEY_WFC_SETTINGS);
 
-        // Remove NSD checkbox by default
-        getPreferenceScreen().removePreference(nsd);
-        //mNsdEnabler = new NsdEnabler(activity, nsd);
-
         String toggleable = Settings.Global.getString(activity.getContentResolver(),
                 Settings.Global.AIRPLANE_MODE_TOGGLEABLE_RADIOS);
 
@@ -366,9 +357,6 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
         if (mNfcEnabler != null) {
             mNfcEnabler.resume();
         }
-        if (mNsdEnabler != null) {
-            mNsdEnabler.resume();
-        }
 
         // update WFC setting
         final Context context = getActivity();
@@ -399,9 +387,6 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
         if (mNfcEnabler != null) {
             mNfcEnabler.pause();
         }
-        if (mNsdEnabler != null) {
-            mNsdEnabler.pause();
-        }
     }
 
     @Override
@@ -437,8 +422,6 @@ public class WirelessSettings extends SettingsPreferenceFragment implements Inde
             public List<String> getNonIndexableKeys(Context context) {
                 final ArrayList<String> result = new ArrayList<String>();
 
-                result.add(KEY_TOGGLE_NSD);
-
                 final UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE);
                 final boolean isSecondaryUser = !um.isAdminUser();
                 final boolean isWimaxEnabled = !isSecondaryUser