1 /*
2  * Copyright (C) 2009 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.bluetooth;
18 
19 import com.android.internal.app.AlertActivity;
20 import com.android.internal.app.AlertController;
21 import com.android.settings.R;
22 
23 import android.app.Activity;
24 import android.bluetooth.BluetoothAdapter;
25 import android.content.DialogInterface;
26 import android.content.Intent;
27 import android.os.Bundle;
28 import android.util.Log;
29 import android.view.View;
30 import android.widget.TextView;
31 
32 /**
33  * RequestPermissionHelperActivity asks the user whether to enable discovery.
34  * This is usually started by RequestPermissionActivity.
35  */
36 public class RequestPermissionHelperActivity extends AlertActivity implements
37         DialogInterface.OnClickListener {
38     private static final String TAG = "RequestPermissionHelperActivity";
39 
40     public static final String ACTION_INTERNAL_REQUEST_BT_ON =
41         "com.android.settings.bluetooth.ACTION_INTERNAL_REQUEST_BT_ON";
42 
43     public static final String ACTION_INTERNAL_REQUEST_BT_ON_AND_DISCOVERABLE =
44         "com.android.settings.bluetooth.ACTION_INTERNAL_REQUEST_BT_ON_AND_DISCOVERABLE";
45 
46     private LocalBluetoothAdapter mLocalAdapter;
47 
48     private int mTimeout;
49 
50     // True if requesting BT to be turned on
51     // False if requesting BT to be turned on + discoverable mode
52     private boolean mEnableOnly;
53 
54     @Override
onCreate(Bundle savedInstanceState)55     protected void onCreate(Bundle savedInstanceState) {
56         super.onCreate(savedInstanceState);
57 
58         // Note: initializes mLocalAdapter and returns true on error
59         if (parseIntent()) {
60             finish();
61             return;
62         }
63 
64         createDialog();
65 
66         if (getResources().getBoolean(R.bool.auto_confirm_bluetooth_activation_dialog) == true) {
67             // dismiss dialog immediately if settings say so
68             onClick(null, BUTTON_POSITIVE);
69             dismiss();
70         }
71     }
72 
createDialog()73     void createDialog() {
74         final AlertController.AlertParams p = mAlertParams;
75 
76         if (mEnableOnly) {
77             p.mMessage = getString(R.string.bluetooth_ask_enablement);
78         } else {
79             if (mTimeout == BluetoothDiscoverableEnabler.DISCOVERABLE_TIMEOUT_NEVER) {
80                 p.mMessage = getString(R.string.bluetooth_ask_enablement_and_lasting_discovery);
81             } else {
82                 p.mMessage = getString(R.string.bluetooth_ask_enablement_and_discovery, mTimeout);
83             }
84         }
85 
86         p.mPositiveButtonText = getString(R.string.allow);
87         p.mPositiveButtonListener = this;
88         p.mNegativeButtonText = getString(R.string.deny);
89         p.mNegativeButtonListener = this;
90 
91         setupAlert();
92     }
93 
onClick(DialogInterface dialog, int which)94     public void onClick(DialogInterface dialog, int which) {
95         int returnCode;
96         // FIXME: fix this ugly switch logic!
97         switch (which) {
98             case BUTTON_POSITIVE:
99                 int btState = 0;
100 
101                 try {
102                     // TODO There's a better way.
103                     int retryCount = 30;
104                     do {
105                         btState = mLocalAdapter.getBluetoothState();
106                         Thread.sleep(100);
107                     } while (btState == BluetoothAdapter.STATE_TURNING_OFF && --retryCount > 0);
108                 } catch (InterruptedException ignored) {
109                     // don't care
110                 }
111 
112                 if (btState == BluetoothAdapter.STATE_TURNING_ON
113                         || btState == BluetoothAdapter.STATE_ON
114                         || mLocalAdapter.enable()) {
115                     returnCode = RequestPermissionActivity.RESULT_BT_STARTING_OR_STARTED;
116                 } else {
117                     returnCode = RESULT_CANCELED;
118                 }
119                 break;
120 
121             case BUTTON_NEGATIVE:
122                 returnCode = RESULT_CANCELED;
123                 break;
124             default:
125                 return;
126         }
127         setResult(returnCode);
128     }
129 
130     /**
131      * Parse the received Intent and initialize mLocalBluetoothAdapter.
132      * @return true if an error occurred; false otherwise
133      */
parseIntent()134     private boolean parseIntent() {
135         Intent intent = getIntent();
136         if (intent != null && intent.getAction().equals(ACTION_INTERNAL_REQUEST_BT_ON)) {
137             mEnableOnly = true;
138         } else if (intent != null
139                 && intent.getAction().equals(ACTION_INTERNAL_REQUEST_BT_ON_AND_DISCOVERABLE)) {
140             mEnableOnly = false;
141             // Value used for display purposes. Not range checking.
142             mTimeout = intent.getIntExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,
143                     BluetoothDiscoverableEnabler.DEFAULT_DISCOVERABLE_TIMEOUT);
144         } else {
145             setResult(RESULT_CANCELED);
146             return true;
147         }
148 
149         LocalBluetoothManager manager = LocalBluetoothManager.getInstance(this);
150         if (manager == null) {
151             Log.e(TAG, "Error: there's a problem starting Bluetooth");
152             setResult(RESULT_CANCELED);
153             return true;
154         }
155         mLocalAdapter = manager.getBluetoothAdapter();
156 
157         return false;
158     }
159 
160     @Override
onBackPressed()161     public void onBackPressed() {
162         setResult(RESULT_CANCELED);
163         super.onBackPressed();
164     }
165 }
166