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
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
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     */
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
161    public void onBackPressed() {
162        setResult(RESULT_CANCELED);
163        super.onBackPressed();
164    }
165}
166