/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.bluetooth;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Resources;
import android.os.Bundle;
import android.provider.Settings;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceCategory;
import android.support.v7.preference.PreferenceGroup;
import android.support.v7.preference.PreferenceScreen;
import android.text.BidiFormatter;
import android.text.Spannable;
import android.text.style.TextAppearanceSpan;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.settings.LinkifyUtils;
import com.android.settings.R;
import com.android.settings.SettingsActivity;
import com.android.settings.dashboard.SummaryLoader;
import com.android.settings.location.ScanningSettings;
import com.android.settings.search.BaseSearchIndexProvider;
import com.android.settings.search.Indexable;
import com.android.settings.search.SearchIndexableRaw;
import com.android.settings.widget.SwitchBar;
import com.android.settingslib.bluetooth.BluetoothCallback;
import com.android.settingslib.bluetooth.BluetoothDeviceFilter;
import com.android.settingslib.bluetooth.CachedBluetoothDevice;
import com.android.settingslib.bluetooth.LocalBluetoothManager;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import static android.os.UserManager.DISALLOW_CONFIG_BLUETOOTH;
/**
* BluetoothSettings is the Settings screen for Bluetooth configuration and
* connection management.
*/
public final class BluetoothSettings extends DeviceListPreferenceFragment implements Indexable {
private static final String TAG = "BluetoothSettings";
private static final int MENU_ID_SCAN = Menu.FIRST;
private static final int MENU_ID_RENAME_DEVICE = Menu.FIRST + 1;
private static final int MENU_ID_SHOW_RECEIVED = Menu.FIRST + 2;
/* Private intent to show the list of received files */
private static final String BTOPP_ACTION_OPEN_RECEIVED_FILES =
"android.btopp.intent.action.OPEN_RECEIVED_FILES";
private static final String BTOPP_PACKAGE =
"com.android.bluetooth";
private static final String KEY_PAIRED_DEVICES = "paired_devices";
private static View mSettingsDialogView = null;
private BluetoothEnabler mBluetoothEnabler;
private PreferenceGroup mPairedDevicesCategory;
private PreferenceGroup mAvailableDevicesCategory;
private boolean mAvailableDevicesCategoryIsPresent;
private boolean mInitialScanStarted;
private boolean mInitiateDiscoverable;
private SwitchBar mSwitchBar;
private final IntentFilter mIntentFilter;
// accessed from inner class (not private to avoid thunks)
Preference mMyDevicePreference;
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
final int state =
intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
updateDeviceName(context);
}
if (state == BluetoothAdapter.STATE_ON) {
mInitiateDiscoverable = true;
}
}
private void updateDeviceName(Context context) {
if (mLocalAdapter.isEnabled() && mMyDevicePreference != null) {
final Resources res = context.getResources();
final Locale locale = res.getConfiguration().getLocales().get(0);
final BidiFormatter bidiFormatter = BidiFormatter.getInstance(locale);
mMyDevicePreference.setSummary(res.getString(
R.string.bluetooth_is_visible_message,
bidiFormatter.unicodeWrap(mLocalAdapter.getName())));
}
}
};
public BluetoothSettings() {
super(DISALLOW_CONFIG_BLUETOOTH);
mIntentFilter = new IntentFilter(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);
}
@Override
protected int getMetricsCategory() {
return MetricsEvent.BLUETOOTH;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mInitialScanStarted = false;
mInitiateDiscoverable = true;
final SettingsActivity activity = (SettingsActivity) getActivity();
mSwitchBar = activity.getSwitchBar();
mBluetoothEnabler = new BluetoothEnabler(activity, mSwitchBar);
mBluetoothEnabler.setupSwitchBar();
}
@Override
public void onDestroyView() {
super.onDestroyView();
mBluetoothEnabler.teardownSwitchBar();
}
@Override
void addPreferencesForActivity() {
addPreferencesFromResource(R.xml.bluetooth_settings);
mPairedDevicesCategory = new PreferenceCategory(getPrefContext());
mPairedDevicesCategory.setKey(KEY_PAIRED_DEVICES);
mPairedDevicesCategory.setOrder(1);
getPreferenceScreen().addPreference(mPairedDevicesCategory);
mAvailableDevicesCategory = new BluetoothProgressCategory(getActivity());
mAvailableDevicesCategory.setSelectable(false);
mAvailableDevicesCategory.setOrder(2);
getPreferenceScreen().addPreference(mAvailableDevicesCategory);
mMyDevicePreference = new Preference(getPrefContext());
mMyDevicePreference.setSelectable(false);
mMyDevicePreference.setOrder(3);
getPreferenceScreen().addPreference(mMyDevicePreference);
setHasOptionsMenu(true);
}
@Override
public void onStart() {
// resume BluetoothEnabler before calling super.onStart() so we don't get
// any onDeviceAdded() callbacks before setting up view in updateContent()
if (mBluetoothEnabler != null) {
mBluetoothEnabler.resume(getActivity());
}
super.onStart();
mInitiateDiscoverable = true;
if (isUiRestricted()) {
setDeviceListGroup(getPreferenceScreen());
if (!isUiRestrictedByOnlyAdmin()) {
getEmptyTextView().setText(R.string.bluetooth_empty_list_user_restricted);
}
removeAllDevices();
return;
}
getActivity().registerReceiver(mReceiver, mIntentFilter);
if (mLocalAdapter != null) {
updateContent(mLocalAdapter.getBluetoothState());
}
}
@Override
public void onStop() {
super.onStop();
if (mBluetoothEnabler != null) {
mBluetoothEnabler.pause();
}
// Make the device only visible to connected devices.
mLocalAdapter.setScanMode(BluetoothAdapter.SCAN_MODE_CONNECTABLE);
if (isUiRestricted()) {
return;
}
getActivity().unregisterReceiver(mReceiver);
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
if (mLocalAdapter == null) return;
// If the user is not allowed to configure bluetooth, do not show the menu.
if (isUiRestricted()) return;
boolean bluetoothIsEnabled = mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON;
boolean isDiscovering = mLocalAdapter.isDiscovering();
int textId = isDiscovering ? R.string.bluetooth_searching_for_devices :
R.string.bluetooth_search_for_devices;
menu.add(Menu.NONE, MENU_ID_SCAN, 0, textId)
.setEnabled(bluetoothIsEnabled && !isDiscovering)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
menu.add(Menu.NONE, MENU_ID_RENAME_DEVICE, 0, R.string.bluetooth_rename_device)
.setEnabled(bluetoothIsEnabled)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
menu.add(Menu.NONE, MENU_ID_SHOW_RECEIVED, 0, R.string.bluetooth_show_received_files)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_ID_SCAN:
if (mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON) {
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_BLUETOOTH_SCAN);
startScanning();
}
return true;
case MENU_ID_RENAME_DEVICE:
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_BLUETOOTH_RENAME);
new BluetoothNameDialogFragment().show(
getFragmentManager(), "rename device");
return true;
case MENU_ID_SHOW_RECEIVED:
MetricsLogger.action(getActivity(), MetricsEvent.ACTION_BLUETOOTH_FILES);
Intent intent = new Intent(BTOPP_ACTION_OPEN_RECEIVED_FILES);
intent.setPackage(BTOPP_PACKAGE);
getActivity().sendBroadcast(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
private void startScanning() {
if (isUiRestricted()) {
return;
}
if (!mAvailableDevicesCategoryIsPresent) {
getPreferenceScreen().addPreference(mAvailableDevicesCategory);
mAvailableDevicesCategoryIsPresent = true;
}
if (mAvailableDevicesCategory != null) {
setDeviceListGroup(mAvailableDevicesCategory);
removeAllDevices();
}
mLocalManager.getCachedDeviceManager().clearNonBondedDevices();
mAvailableDevicesCategory.removeAll();
mInitialScanStarted = true;
mLocalAdapter.startScanning(true);
}
@Override
void onDevicePreferenceClick(BluetoothDevicePreference btPreference) {
mLocalAdapter.stopScanning();
super.onDevicePreferenceClick(btPreference);
}
private void addDeviceCategory(PreferenceGroup preferenceGroup, int titleId,
BluetoothDeviceFilter.Filter filter, boolean addCachedDevices) {
cacheRemoveAllPrefs(preferenceGroup);
preferenceGroup.setTitle(titleId);
setFilter(filter);
setDeviceListGroup(preferenceGroup);
if (addCachedDevices) {
addCachedDevices();
}
preferenceGroup.setEnabled(true);
removeCachedPrefs(preferenceGroup);
}
private void updateContent(int bluetoothState) {
final PreferenceScreen preferenceScreen = getPreferenceScreen();
int messageId = 0;
switch (bluetoothState) {
case BluetoothAdapter.STATE_ON:
mDevicePreferenceMap.clear();
if (isUiRestricted()) {
messageId = R.string.bluetooth_empty_list_user_restricted;
break;
}
getPreferenceScreen().removeAll();
getPreferenceScreen().addPreference(mPairedDevicesCategory);
getPreferenceScreen().addPreference(mAvailableDevicesCategory);
getPreferenceScreen().addPreference(mMyDevicePreference);
// Paired devices category
addDeviceCategory(mPairedDevicesCategory,
R.string.bluetooth_preference_paired_devices,
BluetoothDeviceFilter.BONDED_DEVICE_FILTER, true);
int numberOfPairedDevices = mPairedDevicesCategory.getPreferenceCount();
if (isUiRestricted() || numberOfPairedDevices <= 0) {
if (preferenceScreen.findPreference(KEY_PAIRED_DEVICES) != null) {
preferenceScreen.removePreference(mPairedDevicesCategory);
}
} else {
if (preferenceScreen.findPreference(KEY_PAIRED_DEVICES) == null) {
preferenceScreen.addPreference(mPairedDevicesCategory);
}
}
// Available devices category
addDeviceCategory(mAvailableDevicesCategory,
R.string.bluetooth_preference_found_devices,
BluetoothDeviceFilter.UNBONDED_DEVICE_FILTER, mInitialScanStarted);
if (!mInitialScanStarted) {
startScanning();
}
final Resources res = getResources();
final Locale locale = res.getConfiguration().getLocales().get(0);
final BidiFormatter bidiFormatter = BidiFormatter.getInstance(locale);
mMyDevicePreference.setSummary(res.getString(
R.string.bluetooth_is_visible_message,
bidiFormatter.unicodeWrap(mLocalAdapter.getName())));
getActivity().invalidateOptionsMenu();
// mLocalAdapter.setScanMode is internally synchronized so it is okay for multiple
// threads to execute.
if (mInitiateDiscoverable) {
// Make the device visible to other devices.
mLocalAdapter.setScanMode(BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE);
mInitiateDiscoverable = false;
}
return; // not break
case BluetoothAdapter.STATE_TURNING_OFF:
messageId = R.string.bluetooth_turning_off;
break;
case BluetoothAdapter.STATE_OFF:
setOffMessage();
if (isUiRestricted()) {
messageId = R.string.bluetooth_empty_list_user_restricted;
}
break;
case BluetoothAdapter.STATE_TURNING_ON:
messageId = R.string.bluetooth_turning_on;
mInitialScanStarted = false;
break;
}
setDeviceListGroup(preferenceScreen);
removeAllDevices();
if (messageId != 0) {
getEmptyTextView().setText(messageId);
}
if (!isUiRestricted()) {
getActivity().invalidateOptionsMenu();
}
}
private void setOffMessage() {
final TextView emptyView = getEmptyTextView();
if (emptyView == null) {
return;
}
final CharSequence briefText = getText(R.string.bluetooth_empty_list_bluetooth_off);
final ContentResolver resolver = getActivity().getContentResolver();
final boolean bleScanningMode = Settings.Global.getInt(
resolver, Settings.Global.BLE_SCAN_ALWAYS_AVAILABLE, 0) == 1;
if (!bleScanningMode) {
// Show only the brief text if the scanning mode has been turned off.
emptyView.setText(briefText, TextView.BufferType.SPANNABLE);
} else {
final StringBuilder contentBuilder = new StringBuilder();
contentBuilder.append(briefText);
contentBuilder.append("\n\n");
contentBuilder.append(getText(R.string.ble_scan_notify_text));
LinkifyUtils.linkify(emptyView, contentBuilder, new LinkifyUtils.OnClickListener() {
@Override
public void onClick() {
final SettingsActivity activity =
(SettingsActivity) BluetoothSettings.this.getActivity();
activity.startPreferencePanel(ScanningSettings.class.getName(), null,
R.string.location_scanning_screen_title, null, null, 0);
}
});
}
getPreferenceScreen().removeAll();
Spannable boldSpan = (Spannable) emptyView.getText();
boldSpan.setSpan(
new TextAppearanceSpan(getActivity(), android.R.style.TextAppearance_Medium), 0,
briefText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
@Override
public void onBluetoothStateChanged(int bluetoothState) {
super.onBluetoothStateChanged(bluetoothState);
// If BT is turned off/on staying in the same BT Settings screen
// discoverability to be set again
if (BluetoothAdapter.STATE_ON == bluetoothState)
mInitiateDiscoverable = true;
updateContent(bluetoothState);
}
@Override
public void onScanningStateChanged(boolean started) {
super.onScanningStateChanged(started);
// Update options' enabled state
if (getActivity() != null) {
getActivity().invalidateOptionsMenu();
}
}
@Override
public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
setDeviceListGroup(getPreferenceScreen());
removeAllDevices();
updateContent(mLocalAdapter.getBluetoothState());
}
private final View.OnClickListener mDeviceProfilesListener = new View.OnClickListener() {
@Override
public void onClick(View v) {
// User clicked on advanced options icon for a device in the list
if (!(v.getTag() instanceof CachedBluetoothDevice)) {
Log.w(TAG, "onClick() called for other View: " + v);
return;
}
final CachedBluetoothDevice device = (CachedBluetoothDevice) v.getTag();
Bundle args = new Bundle();
args.putString(DeviceProfilesSettings.ARG_DEVICE_ADDRESS,
device.getDevice().getAddress());
DeviceProfilesSettings profileSettings = new DeviceProfilesSettings();
profileSettings.setArguments(args);
profileSettings.show(getFragmentManager(),
DeviceProfilesSettings.class.getSimpleName());
}
};
/**
* Add a listener, which enables the advanced settings icon.
* @param preference the newly added preference
*/
@Override
void initDevicePreference(BluetoothDevicePreference preference) {
CachedBluetoothDevice cachedDevice = preference.getCachedDevice();
if (cachedDevice.getBondState() == BluetoothDevice.BOND_BONDED) {
// Only paired device have an associated advanced settings screen
preference.setOnSettingsClickListener(mDeviceProfilesListener);
}
}
@Override
protected int getHelpResource() {
return R.string.help_url_bluetooth;
}
private static class SummaryProvider
implements SummaryLoader.SummaryProvider, BluetoothCallback {
private final LocalBluetoothManager mBluetoothManager;
private final Context mContext;
private final SummaryLoader mSummaryLoader;
private boolean mEnabled;
private boolean mConnected;
public SummaryProvider(Context context, SummaryLoader summaryLoader) {
mBluetoothManager = Utils.getLocalBtManager(context);
mContext = context;
mSummaryLoader = summaryLoader;
}
@Override
public void setListening(boolean listening) {
BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
if (defaultAdapter == null) return;
if (listening) {
mEnabled = defaultAdapter.isEnabled();
mConnected =
defaultAdapter.getConnectionState() == BluetoothAdapter.STATE_CONNECTED;
mSummaryLoader.setSummary(this, getSummary());
mBluetoothManager.getEventManager().registerCallback(this);
} else {
mBluetoothManager.getEventManager().unregisterCallback(this);
}
}
private CharSequence getSummary() {
return mContext.getString(!mEnabled ? R.string.bluetooth_disabled
: mConnected ? R.string.bluetooth_connected
: R.string.bluetooth_disconnected);
}
@Override
public void onBluetoothStateChanged(int bluetoothState) {
mEnabled = bluetoothState == BluetoothAdapter.STATE_ON;
mSummaryLoader.setSummary(this, getSummary());
}
@Override
public void onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state) {
mConnected = state == BluetoothAdapter.STATE_CONNECTED;
mSummaryLoader.setSummary(this, getSummary());
}
@Override
public void onScanningStateChanged(boolean started) {
}
@Override
public void onDeviceAdded(CachedBluetoothDevice cachedDevice) {
}
@Override
public void onDeviceDeleted(CachedBluetoothDevice cachedDevice) {
}
@Override
public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
}
}
public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
= new SummaryLoader.SummaryProviderFactory() {
@Override
public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
SummaryLoader summaryLoader) {
return new SummaryProvider(activity, summaryLoader);
}
};
public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
new BaseSearchIndexProvider() {
@Override
public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) {
final List<SearchIndexableRaw> result = new ArrayList<SearchIndexableRaw>();
final Resources res = context.getResources();
// Add fragment title
SearchIndexableRaw data = new SearchIndexableRaw(context);
data.title = res.getString(R.string.bluetooth_settings);
data.screenTitle = res.getString(R.string.bluetooth_settings);
result.add(data);
// Add cached paired BT devices
LocalBluetoothManager lbtm = Utils.getLocalBtManager(context);
// LocalBluetoothManager.getInstance can return null if the device does not
// support bluetooth (e.g. the emulator).
if (lbtm != null) {
Set<BluetoothDevice> bondedDevices =
lbtm.getBluetoothAdapter().getBondedDevices();
for (BluetoothDevice device : bondedDevices) {
data = new SearchIndexableRaw(context);
data.title = device.getName();
data.screenTitle = res.getString(R.string.bluetooth_settings);
data.enabled = enabled;
result.add(data);
}
}
return result;
}
};
}