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/*
* Copyright (C) 2017 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.development;
import android.bluetooth.BluetoothA2dp;
import android.bluetooth.BluetoothCodecConfig;
import android.bluetooth.BluetoothCodecStatus;
import android.bluetooth.BluetoothDevice;
import android.content.Context;
import androidx.annotation.VisibleForTesting;
import androidx.preference.ListPreference;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.core.lifecycle.Lifecycle;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnDestroy;
import com.android.settingslib.development.DeveloperOptionsPreferenceController;
public abstract class AbstractBluetoothA2dpPreferenceController extends
DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
PreferenceControllerMixin, BluetoothServiceConnectionListener, LifecycleObserver,
OnDestroy {
@VisibleForTesting
static final int STREAMING_LABEL_ID = R.string.bluetooth_select_a2dp_codec_streaming_label;
protected final BluetoothA2dpConfigStore mBluetoothA2dpConfigStore;
protected BluetoothA2dp mBluetoothA2dp;
protected ListPreference mPreference;
private final String[] mListValues;
private final String[] mListSummaries;
public AbstractBluetoothA2dpPreferenceController(Context context, Lifecycle lifecycle,
BluetoothA2dpConfigStore store) {
super(context);
mBluetoothA2dpConfigStore = store;
mListValues = getListValues();
mListSummaries = getListSummaries();
if (lifecycle != null) {
lifecycle.addObserver(this);
}
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
// Set a default value because BluetoothCodecConfig is null initially.
mPreference.setValue(mListValues[getDefaultIndex()]);
mPreference.setSummary(mListSummaries[getDefaultIndex()]);
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
if (mBluetoothA2dp == null) {
return false;
}
writeConfigurationValues(newValue);
final BluetoothCodecConfig codecConfig = mBluetoothA2dpConfigStore.createCodecConfig();
synchronized (mBluetoothA2dpConfigStore) {
if (mBluetoothA2dp != null) {
BluetoothDevice activeDevice = mBluetoothA2dp.getActiveDevice();
if (activeDevice == null) {
return false;
}
setCodecConfigPreference(activeDevice, codecConfig);
}
}
// Because the setting is not persisted into permanent storage, we cannot call update state
// here to update the preference.
// Instead, we just assume it was set and update the preference here.
final int index = mPreference.findIndexOfValue(newValue.toString());
// We only want to append "Streaming" if not using default
if (index == getDefaultIndex()) {
mPreference.setSummary(mListSummaries[index]);
} else {
mPreference.setSummary(
mContext.getResources().getString(STREAMING_LABEL_ID, mListSummaries[index]));
}
return true;
}
@Override
public void updateState(Preference preference) {
BluetoothDevice activeDevice = mBluetoothA2dp.getActiveDevice();
if (activeDevice == null || getCodecConfig(activeDevice) == null || mPreference == null) {
return;
}
BluetoothCodecConfig codecConfig;
synchronized (mBluetoothA2dpConfigStore) {
codecConfig = getCodecConfig(activeDevice);
}
final int index = getCurrentA2dpSettingIndex(codecConfig);
mPreference.setValue(mListValues[index]);
// We only want to append "Streaming" if not using default
if (index == getDefaultIndex()) {
mPreference.setSummary(mListSummaries[index]);
} else {
mPreference.setSummary(
mContext.getResources().getString(STREAMING_LABEL_ID, mListSummaries[index]));
}
writeConfigurationValues(mListValues[index]);
}
@Override
public void onBluetoothServiceConnected(BluetoothA2dp bluetoothA2dp) {
mBluetoothA2dp = bluetoothA2dp;
updateState(mPreference);
}
@Override
public void onBluetoothCodecUpdated() {
// intentional no-op
// We do not want to call update state here because the setting is not persisted in
// permanent storage.
}
@Override
public void onBluetoothServiceDisconnected() {
mBluetoothA2dp = null;
}
@Override
public void onDestroy() {
mBluetoothA2dp = null;
}
/**
* @return an array of string values that correspond to the current {@link ListPreference}.
*/
protected abstract String[] getListValues();
/**
* @return an array of string summaries that correspond to the current {@link ListPreference}.
*/
protected abstract String[] getListSummaries();
/**
* Updates the new value to the {@link BluetoothA2dpConfigStore} and the {@link BluetoothA2dp}.
*
* @param newValue the new setting value
*/
protected abstract void writeConfigurationValues(Object newValue);
/**
* @return the current selected index for the {@link ListPreference}.
*/
protected abstract int getCurrentA2dpSettingIndex(BluetoothCodecConfig config);
/**
* @return default setting index for the {@link ListPreference}.
*/
protected abstract int getDefaultIndex();
@VisibleForTesting
void setCodecConfigPreference(BluetoothDevice device,
BluetoothCodecConfig config) {
BluetoothDevice bluetoothDevice =
(device != null) ? device : mBluetoothA2dp.getActiveDevice();
if (bluetoothDevice == null) {
return;
}
mBluetoothA2dp.setCodecConfigPreference(bluetoothDevice, config);
}
@VisibleForTesting
BluetoothCodecConfig getCodecConfig(BluetoothDevice device) {
if (mBluetoothA2dp != null) {
BluetoothDevice bluetoothDevice =
(device != null) ? device : mBluetoothA2dp.getActiveDevice();
if (bluetoothDevice == null) {
return null;
}
BluetoothCodecStatus codecStatus = mBluetoothA2dp.getCodecStatus(bluetoothDevice);
if (codecStatus != null) {
return codecStatus.getCodecConfig();
}
}
return null;
}
}
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