/*
* Copyright (C) 2008 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 com.android.settings.R;
import com.android.settings.bluetooth.LocalBluetoothProfileManager.Profile;
import android.content.Intent;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceGroup;
import android.text.TextUtils;
import android.util.Log;
/**
* ConnectSpecificProfilesActivity presents the user with all of the profiles
* for a particular device, and allows him to choose which should be connected
* (or disconnected).
*/
public class ConnectSpecificProfilesActivity extends PreferenceActivity
implements LocalBluetoothDevice.Callback, Preference.OnPreferenceChangeListener {
private static final String TAG = "ConnectSpecificProfilesActivity";
private static final String KEY_ONLINE_MODE = "online_mode";
private static final String KEY_TITLE = "title";
private static final String KEY_PROFILE_CONTAINER = "profile_container";
public static final String EXTRA_ADDRESS = "address";
private LocalBluetoothManager mManager;
private LocalBluetoothDevice mDevice;
private PreferenceGroup mProfileContainer;
private CheckBoxPreference mOnlineModePreference;
/**
* The current mode of this activity and its checkboxes (either online mode
* or offline mode). In online mode, user interactions with the profile
* checkboxes will also toggle the profile's connectivity. In offline mode,
* they will not, and only the preferred state will be saved for the
* profile.
*/
private boolean mOnlineMode;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String address;
if (savedInstanceState != null) {
address = savedInstanceState.getString(EXTRA_ADDRESS);
} else {
Intent intent = getIntent();
address = intent.getStringExtra(EXTRA_ADDRESS);
}
if (TextUtils.isEmpty(address)) {
Log.w(TAG, "Activity started without address");
finish();
}
mManager = LocalBluetoothManager.getInstance(this);
mDevice = mManager.getLocalDeviceManager().findDevice(address);
if (mDevice == null) {
Log.w(TAG, "Device not found, cannot connect to it");
finish();
}
addPreferencesFromResource(R.xml.bluetooth_device_advanced);
mProfileContainer = (PreferenceGroup) findPreference(KEY_PROFILE_CONTAINER);
// Set the title of the screen
findPreference(KEY_TITLE).setTitle(
getString(R.string.bluetooth_device_advanced_title, mDevice.getName()));
// Listen for check/uncheck of the online mode checkbox
mOnlineModePreference = (CheckBoxPreference) findPreference(KEY_ONLINE_MODE);
mOnlineModePreference.setOnPreferenceChangeListener(this);
// Add a preference for each profile
addPreferencesForProfiles();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString(EXTRA_ADDRESS, mDevice.getAddress());
}
@Override
protected void onResume() {
super.onResume();
mManager.setForegroundActivity(this);
mDevice.registerCallback(this);
refresh();
}
@Override
protected void onPause() {
super.onPause();
mDevice.unregisterCallback(this);
mManager.setForegroundActivity(null);
}
private void addPreferencesForProfiles() {
for (Profile profile : mDevice.getProfiles()) {
Preference pref = createProfilePreference(profile);
mProfileContainer.addPreference(pref);
}
}
/**
* Creates a checkbox preference for the particular profile. The key will be
* the profile's name.
*
* @param profile The profile for which the preference controls.
* @return A preference that allows the user to choose whether this profile
* will be connected to.
*/
private CheckBoxPreference createProfilePreference(Profile profile) {
CheckBoxPreference pref = new CheckBoxPreference(this);
pref.setKey(profile.toString());
pref.setTitle(profile.localizedString);
pref.setPersistent(false);
pref.setOnPreferenceChangeListener(this);
refreshProfilePreference(pref, profile);
return pref;
}
public boolean onPreferenceChange(Preference preference, Object newValue) {
String key = preference.getKey();
if (TextUtils.isEmpty(key) || newValue == null) return true;
if (key.equals(KEY_ONLINE_MODE)) {
onOnlineModeCheckedStateChanged((Boolean) newValue);
} else {
Profile profile = getProfileOf(preference);
if (profile == null) return false;
onProfileCheckedStateChanged(profile, (Boolean) newValue);
}
return true;
}
private void onOnlineModeCheckedStateChanged(boolean checked) {
setOnlineMode(checked, true);
}
private void onProfileCheckedStateChanged(Profile profile, boolean checked) {
if (mOnlineMode) {
if (checked) {
mDevice.connect(profile);
} else {
mDevice.disconnect(profile);
}
}
LocalBluetoothProfileManager profileManager = LocalBluetoothProfileManager
.getProfileManager(mManager, profile);
profileManager.setPreferred(mDevice.getAddress(), checked);
}
public void onDeviceAttributesChanged(LocalBluetoothDevice device) {
refresh();
}
private void refresh() {
// We are in 'online mode' if we are connected, connecting, or disconnecting
setOnlineMode(mDevice.isConnected() || mDevice.isBusy(), false);
refreshProfiles();
}
/**
* Switches between online/offline mode.
*
* @param onlineMode Whether to be in online mode, or offline mode.
* @param takeAction Whether to take action (i.e., connect or disconnect)
* based on the new online mode.
*/
private void setOnlineMode(boolean onlineMode, boolean takeAction) {
mOnlineMode = onlineMode;
if (takeAction) {
if (onlineMode) {
mDevice.connect();
} else {
mDevice.disconnect();
}
}
refreshOnlineModePreference();
}
private void refreshOnlineModePreference() {
mOnlineModePreference.setChecked(mOnlineMode);
/* Gray out checkbox while connecting and disconnecting */
mOnlineModePreference.setEnabled(!mDevice.isBusy());
/**
* If the device is online, show status. Otherwise, show a summary that
* describes what the checkbox does.
*/
mOnlineModePreference.setSummary(mOnlineMode ? mDevice.getSummary()
: R.string.bluetooth_device_advanced_online_mode_summary);
}
private void refreshProfiles() {
for (Profile profile : mDevice.getProfiles()) {
CheckBoxPreference profilePref =
(CheckBoxPreference) findPreference(profile.toString());
if (profilePref == null) {
profilePref = createProfilePreference(profile);
mProfileContainer.addPreference(profilePref);
} else {
refreshProfilePreference(profilePref, profile);
}
}
}
private void refreshProfilePreference(CheckBoxPreference profilePref, Profile profile) {
String address = mDevice.getAddress();
LocalBluetoothProfileManager profileManager = LocalBluetoothProfileManager
.getProfileManager(mManager, profile);
int connectionStatus = profileManager.getConnectionStatus(address);
/* Gray out checkbox while connecting and disconnecting */
profilePref.setEnabled(!mDevice.isBusy());
profilePref.setSummary(getProfileSummary(profileManager, profile, address,
connectionStatus, mOnlineMode));
profilePref.setChecked(profileManager.isPreferred(address));
}
private Profile getProfileOf(Preference pref) {
if (!(pref instanceof CheckBoxPreference)) return null;
String key = pref.getKey();
if (TextUtils.isEmpty(key)) return null;
try {
return Profile.valueOf(pref.getKey());
} catch (IllegalArgumentException e) {
return null;
}
}
private static int getProfileSummary(LocalBluetoothProfileManager profileManager,
Profile profile, String address, int connectionStatus, boolean onlineMode) {
if (!onlineMode || connectionStatus == SettingsBtStatus.CONNECTION_STATUS_DISCONNECTED) {
return getProfileSummaryForSettingPreference(profile);
} else {
return profileManager.getSummary(address);
}
}
/**
* Gets the summary that describes when checked, it will become a preferred profile.
*
* @param profile The profile to get the summary for.
* @return The summary.
*/
private static final int getProfileSummaryForSettingPreference(Profile profile) {
switch (profile) {
case A2DP:
return R.string.bluetooth_a2dp_profile_summary_use_for;
case HEADSET:
return R.string.bluetooth_headset_profile_summary_use_for;
default:
return 0;
}
}
}
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