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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.settings.enterprise.ActionDisabledByAdminDialogHelper;
     32 import com.android.settingslib.HelpUtils;
     33 import com.android.settings.core.InstrumentedFragment;
     34 import com.android.settings.R;
     35 import com.android.settings.SettingsActivity;
     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 InstrumentedFragment
     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             new ActionDisabledByAdminDialogHelper(getActivity())
     74                     .prepareDialogBuilder(UserManager.DISALLOW_OUTGOING_BEAM, admin).show();
     75             mBeamDisallowedByOnlyAdmin = true;
     76             return new View(getContext());
     77         }
     78         mView = inflater.inflate(R.layout.android_beam, container, false);
     79         return mView;
     80     }
     81 
     82     @Override
     83     public void onActivityCreated(Bundle savedInstanceState) {
     84         super.onActivityCreated(savedInstanceState);
     85 
     86         SettingsActivity activity = (SettingsActivity) getActivity();
     87 
     88         mOldActivityTitle = activity.getActionBar().getTitle();
     89 
     90         mSwitchBar = activity.getSwitchBar();
     91         if (mBeamDisallowedByOnlyAdmin) {
     92             mSwitchBar.hide();
     93         } else {
     94             mSwitchBar.setChecked(!mBeamDisallowedByBase && mNfcAdapter.isNdefPushEnabled());
     95             mSwitchBar.addOnSwitchChangeListener(this);
     96             mSwitchBar.setEnabled(!mBeamDisallowedByBase);
     97             mSwitchBar.show();
     98         }
     99 
    100         activity.setTitle(R.string.android_beam_settings_title);
    101     }
    102 
    103     @Override
    104     public void onDestroyView() {
    105         super.onDestroyView();
    106         if (mOldActivityTitle != null) {
    107             getActivity().getActionBar().setTitle(mOldActivityTitle);
    108         }
    109         if (!mBeamDisallowedByOnlyAdmin) {
    110             mSwitchBar.removeOnSwitchChangeListener(this);
    111             mSwitchBar.hide();
    112         }
    113     }
    114 
    115     @Override
    116     public void onSwitchChanged(Switch switchView, boolean desiredState) {
    117         boolean success = false;
    118         mSwitchBar.setEnabled(false);
    119         if (desiredState) {
    120             success = mNfcAdapter.enableNdefPush();
    121         } else {
    122             success = mNfcAdapter.disableNdefPush();
    123         }
    124         if (success) {
    125             mSwitchBar.setChecked(desiredState);
    126         }
    127         mSwitchBar.setEnabled(true);
    128     }
    129 
    130     @Override
    131     public int getMetricsCategory() {
    132         return MetricsEvent.NFC_BEAM;
    133     }
    134 }
    135