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
17package com.android.settings.bluetooth;
18
19import com.android.internal.app.AlertActivity;
20import com.android.internal.app.AlertController;
21import com.android.settings.R;
22
23import android.app.Activity;
24import android.bluetooth.BluetoothAdapter;
25import android.content.DialogInterface;
26import android.content.Intent;
27import android.os.Bundle;
28import android.util.Log;
29import android.view.View;
30import android.widget.TextView;
31
32/**
33 * RequestPermissionHelperActivity asks the user whether to enable discovery.
34 * This is usually started by RequestPermissionActivity.
35 */
36public 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
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
73    void createDialog() {
74        final AlertController.AlertParams p = mAlertParams;
75        p.mIconId = android.R.drawable.ic_dialog_info;
76        p.mTitle = getString(R.string.bluetooth_permission_request);
77
78        View view = getLayoutInflater().inflate(R.layout.bluetooth_discoverable, null);
79        p.mView = view;
80        TextView tv = (TextView) view.findViewById(R.id.message);
81
82        if (mEnableOnly) {
83            tv.setText(getString(R.string.bluetooth_ask_enablement));
84        } else {
85            if (mTimeout == BluetoothDiscoverableEnabler.DISCOVERABLE_TIMEOUT_NEVER) {
86                tv.setText(getString(R.string.bluetooth_ask_enablement_and_lasting_discovery));
87            } else {
88                tv.setText(getString(R.string.bluetooth_ask_enablement_and_discovery, mTimeout));
89            }
90        }
91
92        p.mPositiveButtonText = getString(R.string.yes);
93        p.mPositiveButtonListener = this;
94        p.mNegativeButtonText = getString(R.string.no);
95        p.mNegativeButtonListener = this;
96
97        setupAlert();
98    }
99
100    public void onClick(DialogInterface dialog, int which) {
101        int returnCode;
102        // FIXME: fix this ugly switch logic!
103        switch (which) {
104            case BUTTON_POSITIVE:
105                int btState = 0;
106
107                try {
108                    // TODO There's a better way.
109                    int retryCount = 30;
110                    do {
111                        btState = mLocalAdapter.getBluetoothState();
112                        Thread.sleep(100);
113                    } while (btState == BluetoothAdapter.STATE_TURNING_OFF && --retryCount > 0);
114                } catch (InterruptedException ignored) {
115                    // don't care
116                }
117
118                if (btState == BluetoothAdapter.STATE_TURNING_ON
119                        || btState == BluetoothAdapter.STATE_ON
120                        || mLocalAdapter.enable()) {
121                    returnCode = RequestPermissionActivity.RESULT_BT_STARTING_OR_STARTED;
122                } else {
123                    returnCode = RESULT_CANCELED;
124                }
125                break;
126
127            case BUTTON_NEGATIVE:
128                returnCode = RESULT_CANCELED;
129                break;
130            default:
131                return;
132        }
133        setResult(returnCode);
134    }
135
136    /**
137     * Parse the received Intent and initialize mLocalBluetoothAdapter.
138     * @return true if an error occurred; false otherwise
139     */
140    private boolean parseIntent() {
141        Intent intent = getIntent();
142        if (intent != null && intent.getAction().equals(ACTION_INTERNAL_REQUEST_BT_ON)) {
143            mEnableOnly = true;
144        } else if (intent != null
145                && intent.getAction().equals(ACTION_INTERNAL_REQUEST_BT_ON_AND_DISCOVERABLE)) {
146            mEnableOnly = false;
147            // Value used for display purposes. Not range checking.
148            mTimeout = intent.getIntExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,
149                    BluetoothDiscoverableEnabler.DEFAULT_DISCOVERABLE_TIMEOUT);
150        } else {
151            setResult(RESULT_CANCELED);
152            return true;
153        }
154
155        LocalBluetoothManager manager = LocalBluetoothManager.getInstance(this);
156        if (manager == null) {
157            Log.e(TAG, "Error: there's a problem starting Bluetooth");
158            setResult(RESULT_CANCELED);
159            return true;
160        }
161        mLocalAdapter = manager.getBluetoothAdapter();
162
163        return false;
164    }
165
166    @Override
167    public void onBackPressed() {
168        setResult(RESULT_CANCELED);
169        super.onBackPressed();
170    }
171}
172