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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.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 android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import java.io.File;
/**
* 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_INSTALLER_CD = "usb_installer_cd";
private static final int MENU_ID_INSTALLER_CD = Menu.FIRST;
private UsbManager mUsbManager;
private String mInstallerImagePath;
private CheckBoxPreference mMtp;
private CheckBoxPreference mPtp;
private MenuItem mInstallerCd;
private final BroadcastReceiver mStateReceiver = new BroadcastReceiver() {
public void onReceive(Context content, Intent intent) {
updateToggles();
}
};
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);
return root;
}
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mUsbManager = (UsbManager)getSystemService(Context.USB_SERVICE);
mInstallerImagePath = getString(com.android.internal.R.string.config_isoImagePath);
if (!(new File(mInstallerImagePath)).exists()) {
mInstallerImagePath = null;
}
setHasOptionsMenu(mInstallerImagePath != null);
}
@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() {
if (mUsbManager.isFunctionEnabled(UsbManager.USB_FUNCTION_MTP)) {
mMtp.setChecked(true);
mPtp.setChecked(false);
} else if (mUsbManager.isFunctionEnabled(UsbManager.USB_FUNCTION_PTP)) {
mMtp.setChecked(false);
mPtp.setChecked(true);
} else {
mMtp.setChecked(false);
mPtp.setChecked(false);
}
if (mInstallerCd != null) {
if (mUsbManager.isFunctionEnabled(UsbManager.USB_FUNCTION_MASS_STORAGE)) {
mInstallerCd.setTitle( R.string.usb_label_installer_cd_done);
} else {
mInstallerCd.setTitle( R.string.usb_label_installer_cd);
}
}
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
Log.d(TAG, "onPreferenceTreeClick " + preference);
// 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) {
mUsbManager.setCurrentFunction(UsbManager.USB_FUNCTION_MTP, true);
} else if (preference == mPtp) {
mUsbManager.setCurrentFunction(UsbManager.USB_FUNCTION_PTP, true);
}
updateToggles();
return true;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
mInstallerCd = menu.add(Menu.NONE, MENU_ID_INSTALLER_CD, 0,
R.string.usb_label_installer_cd);
mInstallerCd.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_ID_INSTALLER_CD:
if (mUsbManager.isFunctionEnabled(UsbManager.USB_FUNCTION_MASS_STORAGE)) {
// Disable installer CD, return to default function.
mUsbManager.setCurrentFunction(null, false);
} else {
// Enable installer CD. Don't set as default function.
mUsbManager.setCurrentFunction(UsbManager.USB_FUNCTION_MASS_STORAGE, false);
mUsbManager.setMassStorageBackingFile(mInstallerImagePath);
}
updateToggles();
return true;
}
return super.onOptionsItemSelected(item);
}
}
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