/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.development;
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import android.content.Context;
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import android.os.SystemProperties;
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import androidx.annotation.VisibleForTesting;
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import androidx.preference.ListPreference;
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import androidx.preference.Preference;
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import androidx.preference.PreferenceScreen;
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import com.android.settings.core.PreferenceControllerMixin;
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import com.android.settingslib.development.DeveloperOptionsPreferenceController;
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public class BluetoothMaxConnectedAudioDevicesPreferenceController extends
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DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener,
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PreferenceControllerMixin {
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private static final String MAX_CONNECTED_AUDIO_DEVICES_PREFERENCE_KEY =
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"bluetooth_max_connected_audio_devices";
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@VisibleForTesting
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static final String MAX_CONNECTED_AUDIO_DEVICES_PROPERTY =
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"persist.bluetooth.maxconnectedaudiodevices";
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private final int mDefaultMaxConnectedAudioDevices;
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public BluetoothMaxConnectedAudioDevicesPreferenceController(Context context) {
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super(context);
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mDefaultMaxConnectedAudioDevices = mContext.getResources().getInteger(
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com.android.internal.R.integer.config_bluetooth_max_connected_audio_devices);
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}
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@Override
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public String getPreferenceKey() {
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return MAX_CONNECTED_AUDIO_DEVICES_PREFERENCE_KEY;
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}
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@Override
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public void displayPreference(PreferenceScreen screen) {
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super.displayPreference(screen);
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final ListPreference listPreference = (ListPreference) mPreference;
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final CharSequence[] entries = listPreference.getEntries();
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entries[0] = String.format(entries[0].toString(), mDefaultMaxConnectedAudioDevices);
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listPreference.setEntries(entries);
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}
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@Override
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public boolean onPreferenceChange(Preference preference, Object newValue) {
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String newValueString = newValue.toString();
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final ListPreference listPreference = (ListPreference) preference;
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if (listPreference.findIndexOfValue(newValueString) <= 0) {
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// Reset property value when default is chosen or when value is illegal
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newValueString = "";
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}
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SystemProperties.set(MAX_CONNECTED_AUDIO_DEVICES_PROPERTY, newValueString);
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updateState(preference);
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return true;
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}
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@Override
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public void updateState(Preference preference) {
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final ListPreference listPreference = (ListPreference) preference;
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final CharSequence[] entries = listPreference.getEntries();
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final String currentValue = SystemProperties.get(MAX_CONNECTED_AUDIO_DEVICES_PROPERTY);
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int index = 0;
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if (!currentValue.isEmpty()) {
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index = listPreference.findIndexOfValue(currentValue);
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if (index < 0) {
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// Reset property value when value is illegal
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SystemProperties.set(MAX_CONNECTED_AUDIO_DEVICES_PROPERTY, "");
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index = 0;
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}
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}
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listPreference.setValueIndex(index);
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listPreference.setSummary(entries[index]);
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}
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@Override
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protected void onDeveloperOptionsSwitchEnabled() {
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super.onDeveloperOptionsSwitchEnabled();
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updateState(mPreference);
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}
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@Override
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protected void onDeveloperOptionsSwitchDisabled() {
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super.onDeveloperOptionsSwitchDisabled();
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SystemProperties.set(MAX_CONNECTED_AUDIO_DEVICES_PROPERTY, "");
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updateState(mPreference);
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}
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}
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