1 /*
2  * Copyright (C) 2016 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.server.telecom.settings;
18 
19 import android.annotation.Nullable;
20 import android.app.ActionBar;
21 import android.app.AlertDialog;
22 import android.app.Dialog;
23 import android.app.Fragment;
24 import android.app.FragmentManager;
25 import android.app.FragmentTransaction;
26 import android.app.ListActivity;
27 import android.app.LoaderManager;
28 import android.content.BroadcastReceiver;
29 import android.content.Context;
30 import android.content.CursorLoader;
31 import android.content.DialogInterface;
32 import android.content.Intent;
33 import android.content.IntentFilter;
34 import android.content.Loader;
35 import android.database.Cursor;
36 import android.os.Bundle;
37 import android.provider.BlockedNumberContract;
38 import android.provider.ContactsContract;
39 import android.telephony.PhoneNumberFormattingTextWatcher;
40 import android.telephony.PhoneNumberUtils;
41 import android.text.Editable;
42 import android.text.InputType;
43 import android.text.TextUtils;
44 import android.text.TextWatcher;
45 import android.view.LayoutInflater;
46 import android.view.MenuItem;
47 import android.view.View;
48 import android.view.inputmethod.InputMethodManager;
49 import android.widget.Button;
50 import android.widget.EditText;
51 import android.widget.LinearLayout;
52 import android.widget.ListView;
53 import android.widget.ProgressBar;
54 import android.widget.RelativeLayout;
55 import android.widget.TextView;
56 import android.widget.Toast;
57 
58 import com.android.server.telecom.R;
59 
60 
61 /**
62  * Activity to manage blocked numbers using {@link BlockedNumberContract}.
63  */
64 public class BlockedNumbersActivity extends ListActivity
65         implements LoaderManager.LoaderCallbacks<Cursor>, View.OnClickListener, TextWatcher,
66         BlockNumberTaskFragment.Listener {
67     private static final String ACTION_MANAGE_BLOCKED_NUMBERS =
68             "android.telecom.action.MANAGE_BLOCKED_NUMBERS";
69     private static final String TAG_BLOCK_NUMBER_TASK_FRAGMENT = "block_number_task_fragment";
70     private static final String TELECOM_PACKAGE = "com.android.server.telecom";
71     private static final String[] PROJECTION = new String[] {
72             BlockedNumberContract.BlockedNumbers.COLUMN_ID,
73             BlockedNumberContract.BlockedNumbers.COLUMN_ORIGINAL_NUMBER
74     };
75 
76     private static final String SELECTION = "((" +
77             BlockedNumberContract.BlockedNumbers.COLUMN_ORIGINAL_NUMBER + " NOTNULL) AND (" +
78             BlockedNumberContract.BlockedNumbers.COLUMN_ORIGINAL_NUMBER + " != '' ))";
79 
80     private BlockNumberTaskFragment mBlockNumberTaskFragment;
81     private BlockedNumbersAdapter mAdapter;
82     private TextView mAddButton;
83     private ProgressBar mProgressBar;
84     private RelativeLayout mButterBar;
85     @Nullable private Button mBlockButton;
86     @Nullable private Button mBlockButtonNegative;
87     private TextView mReEnableButton;
88 
89     private BroadcastReceiver mBlockingStatusReceiver;
90 
getIntentForStartingActivity()91     public static Intent getIntentForStartingActivity() {
92         Intent intent = new Intent(ACTION_MANAGE_BLOCKED_NUMBERS);
93         intent.setPackage(TELECOM_PACKAGE);
94         return intent;
95     }
96 
97     @Override
onCreate(Bundle savedInstanceState)98     public void onCreate(Bundle savedInstanceState) {
99         super.onCreate(savedInstanceState);
100         setContentView(R.xml.activity_blocked_numbers);
101 
102         ActionBar actionBar = getActionBar();
103         if (actionBar != null) {
104             actionBar.setDisplayHomeAsUpEnabled(true);
105         }
106 
107         if (!BlockedNumberContract.canCurrentUserBlockNumbers(this)) {
108             TextView nonPrimaryUserText = (TextView) findViewById(R.id.non_primary_user);
109             nonPrimaryUserText.setVisibility(View.VISIBLE);
110 
111             LinearLayout manageBlockedNumbersUi =
112                     (LinearLayout) findViewById(R.id.manage_blocked_ui);
113             manageBlockedNumbersUi.setVisibility(View.GONE);
114             return;
115         }
116 
117         FragmentManager fm = getFragmentManager();
118         mBlockNumberTaskFragment =
119                 (BlockNumberTaskFragment) fm.findFragmentByTag(TAG_BLOCK_NUMBER_TASK_FRAGMENT);
120 
121         if (mBlockNumberTaskFragment == null) {
122             mBlockNumberTaskFragment = new BlockNumberTaskFragment();
123             fm.beginTransaction()
124                     .add(mBlockNumberTaskFragment, TAG_BLOCK_NUMBER_TASK_FRAGMENT).commit();
125         }
126 
127         mAddButton = (TextView) findViewById(R.id.add_blocked);
128         mAddButton.setOnClickListener(this);
129         mAddButton.setContentDescription(getText(R.string.block_number));
130 
131         mProgressBar = (ProgressBar) findViewById(R.id.progress_bar);
132         String[] fromColumns = {BlockedNumberContract.BlockedNumbers.COLUMN_ORIGINAL_NUMBER};
133         int[] toViews = {R.id.blocked_number};
134         mAdapter = new BlockedNumbersAdapter(this, R.xml.layout_blocked_number, null, fromColumns,
135                 toViews, 0);
136 
137         ListView listView = getListView();
138         listView.setAdapter(mAdapter);
139         listView.setDivider(null);
140         listView.setDividerHeight(0);
141 
142         mButterBar = (RelativeLayout) findViewById(R.id.butter_bar);
143         mReEnableButton = (TextView) mButterBar.findViewById(R.id.reenable_button);
144         mReEnableButton.setOnClickListener(this);
145 
146         updateButterBar();
147 
148         updateEnhancedCallBlockingFragment(
149                 BlockedNumbersUtil.isEnhancedCallBlockingEnabledByPlatform(this));
150 
151         mBlockingStatusReceiver = new BroadcastReceiver() {
152             @Override
153             public void onReceive(Context context, Intent intent) {
154                 updateButterBar();
155             }
156         };
157         registerReceiver(mBlockingStatusReceiver, new IntentFilter(
158                 BlockedNumberContract.SystemContract.ACTION_BLOCK_SUPPRESSION_STATE_CHANGED));
159 
160         getLoaderManager().initLoader(0, null, this);
161     }
162 
163     @Override
onDestroy()164     protected void onDestroy() {
165         if (mBlockingStatusReceiver != null) {
166             unregisterReceiver(mBlockingStatusReceiver);
167         }
168         super.onDestroy();
169     }
170 
171     @Override
onOptionsItemSelected(MenuItem item)172     public boolean onOptionsItemSelected(MenuItem item) {
173         switch (item.getItemId()) {
174             case android.R.id.home:
175                 this.finish();
176                 return true;
177             default:
178                 return super.onOptionsItemSelected(item);
179         }
180     }
181 
updateButterBar()182     private void updateButterBar() {
183         if (BlockedNumberContract.SystemContract.getBlockSuppressionStatus(this).isSuppressed) {
184             mButterBar.setVisibility(View.VISIBLE);
185         } else {
186             mButterBar.setVisibility(View.GONE);
187         }
188     }
189 
190     /**
191      * Update the visibility of {@link EnhancedCallBlockingFragment}.
192      */
updateEnhancedCallBlockingFragment(boolean show)193     private void updateEnhancedCallBlockingFragment(boolean show) {
194         FragmentManager fragmentManager = getFragmentManager();
195         Fragment fragment = fragmentManager.findFragmentById(R.id.enhanced_call_blocking_container);
196         if (!show && fragment == null) {
197             // Nothing to show, so bail early.
198             return;
199         }
200         final FragmentTransaction transaction = fragmentManager.beginTransaction();
201         if (show) {
202             if (fragment == null) {
203                 fragment = new EnhancedCallBlockingFragment();
204                 transaction.add(R.id.enhanced_call_blocking_container, fragment);
205             } else {
206                 transaction.show(fragment);
207             }
208         } else {
209             transaction.hide(fragment);
210         }
211         transaction.commit();
212     }
213 
214     @Override
onCreateLoader(int id, Bundle args)215     public Loader<Cursor> onCreateLoader(int id, Bundle args) {
216         return new CursorLoader(this, BlockedNumberContract.BlockedNumbers.CONTENT_URI,
217                 PROJECTION, SELECTION, null,
218                 BlockedNumberContract.BlockedNumbers.COLUMN_ID + " DESC");
219     }
220 
221     @Override
onLoadFinished(Loader<Cursor> loader, Cursor data)222     public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
223         mAdapter.swapCursor(data);
224         mProgressBar.setVisibility(View.GONE);
225     }
226 
227     @Override
onLoaderReset(Loader<Cursor> loader)228     public void onLoaderReset(Loader<Cursor> loader) {
229         mAdapter.swapCursor(null);
230         mProgressBar.setVisibility(View.VISIBLE);
231     }
232 
233     @Override
onClick(View view)234     public void onClick(View view) {
235         if (view == mAddButton) {
236             showAddBlockedNumberDialog();
237         } else if (view == mReEnableButton) {
238             BlockedNumberContract.SystemContract.endBlockSuppression(this);
239             mButterBar.setVisibility(View.GONE);
240         }
241     }
242 
showAddBlockedNumberDialog()243     private void showAddBlockedNumberDialog() {
244         LayoutInflater inflater = this.getLayoutInflater();
245         View dialogView = inflater.inflate(R.xml.add_blocked_number_dialog, null);
246         final EditText editText = (EditText) dialogView.findViewById(R.id.add_blocked_number);
247         editText.addTextChangedListener(new PhoneNumberFormattingTextWatcher());
248         editText.addTextChangedListener(this);
249         AlertDialog dialog = new AlertDialog.Builder(this)
250                 .setView(dialogView)
251                 .setPositiveButton(R.string.block_button, new DialogInterface.OnClickListener() {
252                     public void onClick(DialogInterface dialog, int id) {
253                         addBlockedNumber(PhoneNumberUtils.stripSeparators(
254                                 editText.getText().toString()));
255                     }
256                 })
257                 .setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
258                     public void onClick(DialogInterface dialog, int id) {
259                         dialog.dismiss();
260                     }
261                 })
262                 .create();
263         dialog.setOnShowListener(new AlertDialog.OnShowListener() {
264                     @Override
265                     public void onShow(DialogInterface dialog) {
266                         mBlockButton = ((AlertDialog) dialog)
267                                 .getButton(AlertDialog.BUTTON_POSITIVE);
268                         mBlockButtonNegative = ((AlertDialog) dialog)
269                                 .getButton(AlertDialog.BUTTON_NEGATIVE);
270                         mBlockButton.setAllCaps(false);
271                         mBlockButtonNegative.setAllCaps(false);
272                         mBlockButton.setEnabled(false);
273                         // show keyboard
274                         InputMethodManager inputMethodManager =
275                                 (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
276                         inputMethodManager.showSoftInput(editText,
277                                 InputMethodManager.SHOW_IMPLICIT);
278 
279                     }
280                 });
281         dialog.show();
282     }
283 
284     /**
285      * Add blocked number if it does not exist.
286      */
addBlockedNumber(String number)287     private void addBlockedNumber(String number) {
288         if (PhoneNumberUtils.isEmergencyNumber(number)) {
289             Toast.makeText(
290                     this,
291                     getString(R.string.blocked_numbers_block_emergency_number_message),
292                     Toast.LENGTH_SHORT).show();
293         } else {
294             // We disable the add button, to prevent the user from adding other numbers until the
295             // current number is added.
296             mAddButton.setEnabled(false);
297             mBlockNumberTaskFragment.blockIfNotAlreadyBlocked(number, this);
298         }
299     }
300 
301     @Override
beforeTextChanged(CharSequence s, int start, int count, int after)302     public void beforeTextChanged(CharSequence s, int start, int count, int after) {
303         // no-op
304     }
305 
306     @Override
onTextChanged(CharSequence text, int start, int before, int count)307     public void onTextChanged(CharSequence text, int start, int before, int count) {
308         if (mBlockButton != null) {
309             mBlockButton.setEnabled(
310                     !TextUtils.isEmpty(PhoneNumberUtils.stripSeparators(text.toString())));
311         }
312     }
313 
314     @Override
afterTextChanged(Editable s)315     public void afterTextChanged(Editable s) {
316         // no-op
317     }
318 
319     @Override
onBlocked(String number, boolean alreadyBlocked)320     public void onBlocked(String number, boolean alreadyBlocked) {
321         if (alreadyBlocked) {
322             BlockedNumbersUtil.showToastWithFormattedNumber(this,
323                     R.string.blocked_numbers_number_already_blocked_message, number);
324         } else {
325             BlockedNumbersUtil.showToastWithFormattedNumber(this,
326                     R.string.blocked_numbers_number_blocked_message, number);
327         }
328         mAddButton.setEnabled(true);
329     }
330 }
331