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/*
* 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.deviceinfo;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.BroadcastReceiver;
import android.content.ContentQueryMap;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.hardware.usb.UsbManager;
import android.os.Bundle;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceScreen;
import android.provider.Settings;
import android.util.Log;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import com.android.settings.Utils;
/**
* USB storage settings.
*/
public class UsbSettings extends SettingsPreferenceFragment {
private static final String TAG = "UsbSettings";
private static final String KEY_MTP = "usb_mtp";
private static final String KEY_PTP = "usb_ptp";
private static final String KEY_MASS_STORAGE = "usb_mass_storage";
private UsbManager mUsbManager;
private StorageManager storageManager;
private StorageVolume[] storageVolumes;
private CheckBoxPreference mMtp;
private CheckBoxPreference mPtp;
private CheckBoxPreference mUms;
private boolean mUsbAccessoryMode;
private final BroadcastReceiver mStateReceiver = new BroadcastReceiver() {
public void onReceive(Context content, Intent intent) {
String action = intent.getAction();
if (action.equals(UsbManager.ACTION_USB_STATE)) {
mUsbAccessoryMode = intent.getBooleanExtra(UsbManager.USB_FUNCTION_ACCESSORY, false);
Log.e(TAG, "UsbAccessoryMode " + mUsbAccessoryMode);
}
updateToggles(mUsbManager.getDefaultFunction());
}
};
private PreferenceScreen createPreferenceHierarchy() {
PreferenceScreen root = getPreferenceScreen();
if (root != null) {
root.removeAll();
}
addPreferencesFromResource(R.xml.usb_settings);
root = getPreferenceScreen();
mMtp = (CheckBoxPreference)root.findPreference(KEY_MTP);
mPtp = (CheckBoxPreference)root.findPreference(KEY_PTP);
mUms = (CheckBoxPreference)root.findPreference(KEY_MASS_STORAGE);
if (!storageVolumes[0].allowMassStorage()) {
root.removePreference(mUms);
}
return root;
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mUsbManager = (UsbManager)getSystemService(Context.USB_SERVICE);
storageManager = (StorageManager) getSystemService(Context.STORAGE_SERVICE);
storageVolumes = storageManager.getVolumeList();
}
@Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(mStateReceiver);
}
@Override
public void onResume() {
super.onResume();
// Make sure we reload the preference hierarchy since some of these settings
// depend on others...
createPreferenceHierarchy();
// ACTION_USB_STATE is sticky so this will call updateToggles
getActivity().registerReceiver(mStateReceiver,
new IntentFilter(UsbManager.ACTION_USB_STATE));
}
private void updateToggles(String function) {
if (UsbManager.USB_FUNCTION_MTP.equals(function)) {
mMtp.setChecked(true);
mPtp.setChecked(false);
mUms.setChecked(false);
} else if (UsbManager.USB_FUNCTION_PTP.equals(function)) {
mMtp.setChecked(false);
mUms.setChecked(false);
mPtp.setChecked(true);
} else if (UsbManager.USB_FUNCTION_MASS_STORAGE.equals(function)) {
mMtp.setChecked(false);
mPtp.setChecked(false);
mUms.setChecked(true);
} else {
mMtp.setChecked(false);
mPtp.setChecked(false);
mUms.setChecked(false);
}
if (!mUsbAccessoryMode) {
//Enable MTP and PTP switch while USB is not in Accessory Mode, otherwise disable it
Log.e(TAG, "USB Normal Mode");
mMtp.setEnabled(true);
mPtp.setEnabled(true);
} else {
Log.e(TAG, "USB Accessory Mode");
mMtp.setEnabled(false);
mPtp.setEnabled(false);
}
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
// Don't allow any changes to take effect as the USB host will be disconnected, killing
// the monkeys
if (Utils.isMonkeyRunning()) {
return true;
}
// temporary hack - using check boxes as radio buttons
// don't allow unchecking them
if (preference instanceof CheckBoxPreference) {
CheckBoxPreference checkBox = (CheckBoxPreference)preference;
if (!checkBox.isChecked()) {
checkBox.setChecked(true);
return true;
}
}
if (preference == mMtp) {
Settings.Secure.putInt(getContentResolver(), Settings.Secure.USB_MASS_STORAGE_ENABLED, 0 );
mUsbManager.setCurrentFunction(UsbManager.USB_FUNCTION_MTP, true);
updateToggles(UsbManager.USB_FUNCTION_MTP);
} else if (preference == mPtp) {
Settings.Secure.putInt(getContentResolver(), Settings.Secure.USB_MASS_STORAGE_ENABLED, 0 );
mUsbManager.setCurrentFunction(UsbManager.USB_FUNCTION_PTP, true);
updateToggles(UsbManager.USB_FUNCTION_PTP);
} else if (preference == mUms) {
Settings.Secure.putInt(getContentResolver(), Settings.Secure.USB_MASS_STORAGE_ENABLED, 1 );
mUsbManager.setCurrentFunction(UsbManager.USB_FUNCTION_MASS_STORAGE, true);
updateToggles(UsbManager.USB_FUNCTION_MASS_STORAGE);
}
return true;
}
}
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