/*
* 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.ActionBar;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.preference.PreferenceGroup;
import android.preference.PreferenceScreen;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Switch;
import android.widget.TextView;
import com.android.settings.ProgressCategory;
import com.android.settings.R;
/**
* BluetoothSettings is the Settings screen for Bluetooth configuration and
* connection management.
*/
public final class BluetoothSettings extends DeviceListPreferenceFragment {
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_VISIBILITY_TIMEOUT = Menu.FIRST + 2;
private static final int MENU_ID_SHOW_RECEIVED = Menu.FIRST + 3;
/* 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 BluetoothEnabler mBluetoothEnabler;
private BluetoothDiscoverableEnabler mDiscoverableEnabler;
private PreferenceGroup mPairedDevicesCategory;
private PreferenceGroup mAvailableDevicesCategory;
private boolean mAvailableDevicesCategoryIsPresent;
private boolean mActivityStarted;
private TextView mEmptyView;
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) {
String action = intent.getAction();
if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
updateDeviceName();
}
}
private void updateDeviceName() {
if (mLocalAdapter.isEnabled() && mMyDevicePreference != null) {
mMyDevicePreference.setTitle(mLocalAdapter.getName());
}
}
};
public BluetoothSettings() {
mIntentFilter = new IntentFilter(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mActivityStarted = (savedInstanceState == null); // don't auto start scan after rotation
mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
getListView().setEmptyView(mEmptyView);
}
@Override
void addPreferencesForActivity() {
addPreferencesFromResource(R.xml.bluetooth_settings);
Activity activity = getActivity();
Switch actionBarSwitch = new Switch(activity);
if (activity instanceof PreferenceActivity) {
PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
final int padding = activity.getResources().getDimensionPixelSize(
R.dimen.action_bar_switch_padding);
actionBarSwitch.setPadding(0, 0, padding, 0);
activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
ActionBar.DISPLAY_SHOW_CUSTOM);
activity.getActionBar().setCustomView(actionBarSwitch, new ActionBar.LayoutParams(
ActionBar.LayoutParams.WRAP_CONTENT,
ActionBar.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_VERTICAL | Gravity.RIGHT));
}
}
mBluetoothEnabler = new BluetoothEnabler(activity, actionBarSwitch);
setHasOptionsMenu(true);
}
@Override
public void onResume() {
// resume BluetoothEnabler before calling super.onResume() so we don't get
// any onDeviceAdded() callbacks before setting up view in updateContent()
if (mBluetoothEnabler != null) {
mBluetoothEnabler.resume();
}
super.onResume();
if (mDiscoverableEnabler != null) {
mDiscoverableEnabler.resume();
}
getActivity().registerReceiver(mReceiver, mIntentFilter);
if (mLocalAdapter != null) {
updateContent(mLocalAdapter.getBluetoothState(), mActivityStarted);
}
}
@Override
public void onPause() {
super.onPause();
if (mBluetoothEnabler != null) {
mBluetoothEnabler.pause();
}
getActivity().unregisterReceiver(mReceiver);
if (mDiscoverableEnabler != null) {
mDiscoverableEnabler.pause();
}
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
if (mLocalAdapter == null) 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_IF_ROOM);
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_VISIBILITY_TIMEOUT, 0, R.string.bluetooth_visibility_timeout)
.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);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_ID_SCAN:
if (mLocalAdapter.getBluetoothState() == BluetoothAdapter.STATE_ON) {
startScanning();
}
return true;
case MENU_ID_RENAME_DEVICE:
new BluetoothNameDialogFragment().show(
getFragmentManager(), "rename device");
return true;
case MENU_ID_VISIBILITY_TIMEOUT:
new BluetoothVisibilityTimeoutFragment().show(
getFragmentManager(), "visibility timeout");
return true;
case MENU_ID_SHOW_RECEIVED:
Intent intent = new Intent(BTOPP_ACTION_OPEN_RECEIVED_FILES);
getActivity().sendBroadcast(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
private void startScanning() {
if (!mAvailableDevicesCategoryIsPresent) {
getPreferenceScreen().addPreference(mAvailableDevicesCategory);
}
mLocalAdapter.startScanning(true);
}
@Override
void onDevicePreferenceClick(BluetoothDevicePreference btPreference) {
mLocalAdapter.stopScanning();
super.onDevicePreferenceClick(btPreference);
}
private void addDeviceCategory(PreferenceGroup preferenceGroup, int titleId,
BluetoothDeviceFilter.Filter filter) {
preferenceGroup.setTitle(titleId);
getPreferenceScreen().addPreference(preferenceGroup);
setFilter(filter);
setDeviceListGroup(preferenceGroup);
addCachedDevices();
preferenceGroup.setEnabled(true);
}
private void updateContent(int bluetoothState, boolean scanState) {
final PreferenceScreen preferenceScreen = getPreferenceScreen();
int messageId = 0;
switch (bluetoothState) {
case BluetoothAdapter.STATE_ON:
preferenceScreen.removeAll();
preferenceScreen.setOrderingAsAdded(true);
mDevicePreferenceMap.clear();
// This device
if (mMyDevicePreference == null) {
mMyDevicePreference = new Preference(getActivity());
}
mMyDevicePreference.setTitle(mLocalAdapter.getName());
if (getResources().getBoolean(com.android.internal.R.bool.config_voice_capable)) {
mMyDevicePreference.setIcon(R.drawable.ic_bt_cellphone); // for phones
} else {
mMyDevicePreference.setIcon(R.drawable.ic_bt_laptop); // for tablets, etc.
}
mMyDevicePreference.setPersistent(false);
mMyDevicePreference.setEnabled(true);
preferenceScreen.addPreference(mMyDevicePreference);
if (mDiscoverableEnabler == null) {
mDiscoverableEnabler = new BluetoothDiscoverableEnabler(getActivity(),
mLocalAdapter, mMyDevicePreference);
mDiscoverableEnabler.resume();
LocalBluetoothManager.getInstance(getActivity()).setDiscoverableEnabler(
mDiscoverableEnabler);
}
// Paired devices category
if (mPairedDevicesCategory == null) {
mPairedDevicesCategory = new PreferenceCategory(getActivity());
} else {
mPairedDevicesCategory.removeAll();
}
addDeviceCategory(mPairedDevicesCategory,
R.string.bluetooth_preference_paired_devices,
BluetoothDeviceFilter.BONDED_DEVICE_FILTER);
int numberOfPairedDevices = mPairedDevicesCategory.getPreferenceCount();
mDiscoverableEnabler.setNumberOfPairedDevices(numberOfPairedDevices);
// Available devices category
if (mAvailableDevicesCategory == null) {
mAvailableDevicesCategory = new ProgressCategory(getActivity(), null);
} else {
mAvailableDevicesCategory.removeAll();
}
addDeviceCategory(mAvailableDevicesCategory,
R.string.bluetooth_preference_found_devices,
BluetoothDeviceFilter.UNBONDED_DEVICE_FILTER);
int numberOfAvailableDevices = mAvailableDevicesCategory.getPreferenceCount();
mAvailableDevicesCategoryIsPresent = true;
if (numberOfAvailableDevices == 0) {
preferenceScreen.removePreference(mAvailableDevicesCategory);
mAvailableDevicesCategoryIsPresent = false;
}
if (numberOfPairedDevices == 0) {
preferenceScreen.removePreference(mPairedDevicesCategory);
if (scanState == true) {
mActivityStarted = false;
startScanning();
} else {
if (!mAvailableDevicesCategoryIsPresent) {
getPreferenceScreen().addPreference(mAvailableDevicesCategory);
}
}
}
getActivity().invalidateOptionsMenu();
return; // not break
case BluetoothAdapter.STATE_TURNING_OFF:
messageId = R.string.bluetooth_turning_off;
break;
case BluetoothAdapter.STATE_OFF:
messageId = R.string.bluetooth_empty_list_bluetooth_off;
break;
case BluetoothAdapter.STATE_TURNING_ON:
messageId = R.string.bluetooth_turning_on;
break;
}
setDeviceListGroup(preferenceScreen);
removeAllDevices();
mEmptyView.setText(messageId);
getActivity().invalidateOptionsMenu();
}
@Override
public void onBluetoothStateChanged(int bluetoothState) {
super.onBluetoothStateChanged(bluetoothState);
updateContent(bluetoothState, true);
}
@Override
public void onScanningStateChanged(boolean started) {
super.onScanningStateChanged(started);
// Update options' enabled state
getActivity().invalidateOptionsMenu();
}
public void onDeviceBondStateChanged(CachedBluetoothDevice cachedDevice, int bondState) {
setDeviceListGroup(getPreferenceScreen());
removeAllDevices();
updateContent(mLocalAdapter.getBluetoothState(), false);
}
private final View.OnClickListener mDeviceProfilesListener = new View.OnClickListener() {
public void onClick(View v) {
// User clicked on advanced options icon for a device in the list
if (v.getTag() instanceof CachedBluetoothDevice) {
CachedBluetoothDevice device = (CachedBluetoothDevice) v.getTag();
Bundle args = new Bundle(1);
args.putParcelable(DeviceProfilesSettings.EXTRA_DEVICE, device.getDevice());
((PreferenceActivity) getActivity()).startPreferencePanel(
DeviceProfilesSettings.class.getName(), args,
R.string.bluetooth_device_advanced_title, null, null, 0);
} else {
Log.w(TAG, "onClick() called for other View: " + v); // TODO remove
}
}
};
/**
* 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);
}
}
}