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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.app.ActionBar;
     20 import android.content.Context;
     21 import android.nfc.NfcAdapter;
     22 import android.os.Bundle;
     23 import android.os.UserHandle;
     24 import android.os.UserManager;
     25 import android.view.LayoutInflater;
     26 import android.view.Menu;
     27 import android.view.MenuInflater;
     28 import android.view.View;
     29 import android.view.ViewGroup;
     30 import android.widget.Switch;
     31 
     32 import com.android.internal.logging.MetricsProto.MetricsEvent;
     33 import com.android.settingslib.HelpUtils;
     34 import com.android.settings.InstrumentedFragment;
     35 import com.android.settings.R;
     36 import com.android.settings.SettingsActivity;
     37 import com.android.settings.ShowAdminSupportDetailsDialog;
     38 import com.android.settings.widget.SwitchBar;
     39 import com.android.settingslib.RestrictedLockUtils;
     40 
     41 import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
     42 
     43 public class AndroidBeam extends InstrumentedFragment
     44         implements SwitchBar.OnSwitchChangeListener {
     45     private View mView;
     46     private NfcAdapter mNfcAdapter;
     47     private SwitchBar mSwitchBar;
     48     private CharSequence mOldActivityTitle;
     49     private boolean mBeamDisallowedByBase;
     50     private boolean mBeamDisallowedByOnlyAdmin;
     51 
     52     @Override
     53     public void onCreate(Bundle savedInstanceState) {
     54         super.onCreate(savedInstanceState);
     55         mNfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
     56         setHasOptionsMenu(true);
     57     }
     58 
     59     @Override
     60     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
     61         super.onCreateOptionsMenu(menu, inflater);
     62         HelpUtils.prepareHelpMenuItem(getActivity(), menu, R.string.help_uri_beam,
     63                 getClass().getName());
     64     }
     65 
     66     @Override
     67     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     68             Bundle savedInstanceState) {
     69         final EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced(
     70                 getActivity(), UserManager.DISALLOW_OUTGOING_BEAM, UserHandle.myUserId());
     71         final UserManager um = UserManager.get(getActivity());
     72         mBeamDisallowedByBase = RestrictedLockUtils.hasBaseUserRestriction(getActivity(),
     73                 UserManager.DISALLOW_OUTGOING_BEAM, UserHandle.myUserId());
     74         if (!mBeamDisallowedByBase && admin != null) {
     75             View view = inflater.inflate(R.layout.admin_support_details_empty_view, null);
     76             ShowAdminSupportDetailsDialog.setAdminSupportDetails(getActivity(), view, admin, false);
     77             view.setVisibility(View.VISIBLE);
     78             mBeamDisallowedByOnlyAdmin = true;
     79             return view;
     80         }
     81         mView = inflater.inflate(R.layout.android_beam, container, false);
     82         return mView;
     83     }
     84 
     85     @Override
     86     public void onActivityCreated(Bundle savedInstanceState) {
     87         super.onActivityCreated(savedInstanceState);
     88 
     89         SettingsActivity activity = (SettingsActivity) getActivity();
     90 
     91         mOldActivityTitle = activity.getActionBar().getTitle();
     92 
     93         mSwitchBar = activity.getSwitchBar();
     94         if (mBeamDisallowedByOnlyAdmin) {
     95             mSwitchBar.hide();
     96         } else {
     97             mSwitchBar.setChecked(!mBeamDisallowedByBase && mNfcAdapter.isNdefPushEnabled());
     98             mSwitchBar.addOnSwitchChangeListener(this);
     99             mSwitchBar.setEnabled(!mBeamDisallowedByBase);
    100             mSwitchBar.show();
    101         }
    102     }
    103 
    104     @Override
    105     public void onDestroyView() {
    106         super.onDestroyView();
    107         if (mOldActivityTitle != null) {
    108             getActivity().getActionBar().setTitle(mOldActivityTitle);
    109         }
    110         if (!mBeamDisallowedByOnlyAdmin) {
    111             mSwitchBar.removeOnSwitchChangeListener(this);
    112             mSwitchBar.hide();
    113         }
    114     }
    115 
    116     @Override
    117     public void onSwitchChanged(Switch switchView, boolean desiredState) {
    118         boolean success = false;
    119         mSwitchBar.setEnabled(false);
    120         if (desiredState) {
    121             success = mNfcAdapter.enableNdefPush();
    122         } else {
    123             success = mNfcAdapter.disableNdefPush();
    124         }
    125         if (success) {
    126             mSwitchBar.setChecked(desiredState);
    127         }
    128         mSwitchBar.setEnabled(true);
    129     }
    130 
    131     @Override
    132     protected int getMetricsCategory() {
    133         return MetricsEvent.NFC_BEAM;
    134     }
    135 }
    136