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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      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
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     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.
     15  */
     16 
     17 package com.android.settings.nfc;
     18 
     19 import android.nfc.NfcAdapter;
     20 import android.os.Bundle;
     21 import android.os.UserHandle;
     22 import android.os.UserManager;
     23 import android.view.LayoutInflater;
     24 import android.view.Menu;
     25 import android.view.MenuInflater;
     26 import android.view.View;
     27 import android.view.ViewGroup;
     28 import android.widget.Switch;
     29 
     30 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     31 import com.android.settingslib.HelpUtils;
     32 import com.android.settings.core.InstrumentedPreferenceFragment;
     33 import com.android.settings.R;
     34 import com.android.settings.SettingsActivity;
     35 import com.android.settings.ShowAdminSupportDetailsDialog;
     36 import com.android.settings.widget.SwitchBar;
     37 import com.android.settingslib.RestrictedLockUtils;
     38 
     39 import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
     40 
     41 public class AndroidBeam extends InstrumentedPreferenceFragment
     42         implements SwitchBar.OnSwitchChangeListener {
     43     private View mView;
     44     private NfcAdapter mNfcAdapter;
     45     private SwitchBar mSwitchBar;
     46     private CharSequence mOldActivityTitle;
     47     private boolean mBeamDisallowedByBase;
     48     private boolean mBeamDisallowedByOnlyAdmin;
     49 
     50     @Override
     51     public void onCreate(Bundle savedInstanceState) {
     52         super.onCreate(savedInstanceState);
     53         mNfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
     54         setHasOptionsMenu(true);
     55     }
     56 
     57     @Override
     58     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
     59         super.onCreateOptionsMenu(menu, inflater);
     60         HelpUtils.prepareHelpMenuItem(getActivity(), menu, R.string.help_uri_beam,
     61                 getClass().getName());
     62     }
     63 
     64     @Override
     65     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     66             Bundle savedInstanceState) {
     67         final EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(
     68                 getActivity(), UserManager.DISALLOW_OUTGOING_BEAM, UserHandle.myUserId());
     69         final UserManager um = UserManager.get(getActivity());
     70         mBeamDisallowedByBase = RestrictedLockUtils.hasBaseUserRestriction(getActivity(),
     71                 UserManager.DISALLOW_OUTGOING_BEAM, UserHandle.myUserId());
     72         if (!mBeamDisallowedByBase && admin != null) {
     73             View view = inflater.inflate(R.layout.admin_support_details_empty_view, null);
     74             ShowAdminSupportDetailsDialog.setAdminSupportDetails(getActivity(), view, admin, false);
     75             view.setVisibility(View.VISIBLE);
     76             mBeamDisallowedByOnlyAdmin = true;
     77             return view;
     78         }
     79         mView = inflater.inflate(R.layout.android_beam, container, false);
     80         return mView;
     81     }
     82 
     83     @Override
     84     public void onActivityCreated(Bundle savedInstanceState) {
     85         super.onActivityCreated(savedInstanceState);
     86 
     87         SettingsActivity activity = (SettingsActivity) getActivity();
     88 
     89         mOldActivityTitle = activity.getActionBar().getTitle();
     90 
     91         mSwitchBar = activity.getSwitchBar();
     92         if (mBeamDisallowedByOnlyAdmin) {
     93             mSwitchBar.hide();
     94         } else {
     95             mSwitchBar.setChecked(!mBeamDisallowedByBase && mNfcAdapter.isNdefPushEnabled());
     96             mSwitchBar.addOnSwitchChangeListener(this);
     97             mSwitchBar.setEnabled(!mBeamDisallowedByBase);
     98             mSwitchBar.show();
     99         }
    100     }
    101 
    102     @Override
    103     public void onDestroyView() {
    104         super.onDestroyView();
    105         if (mOldActivityTitle != null) {
    106             getActivity().getActionBar().setTitle(mOldActivityTitle);
    107         }
    108         if (!mBeamDisallowedByOnlyAdmin) {
    109             mSwitchBar.removeOnSwitchChangeListener(this);
    110             mSwitchBar.hide();
    111         }
    112     }
    113 
    114     @Override
    115     public void onSwitchChanged(Switch switchView, boolean desiredState) {
    116         boolean success = false;
    117         mSwitchBar.setEnabled(false);
    118         if (desiredState) {
    119             success = mNfcAdapter.enableNdefPush();
    120         } else {
    121             success = mNfcAdapter.disableNdefPush();
    122         }
    123         if (success) {
    124             mSwitchBar.setChecked(desiredState);
    125         }
    126         mSwitchBar.setEnabled(true);
    127     }
    128 
    129     @Override
    130     public int getMetricsCategory() {
    131         return MetricsEvent.NFC_BEAM;
    132     }
    133 }
    134