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/*
* Copyright (C) 2007 Google Inc.
*
* 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.internal.app;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.IMountService;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.widget.Toast;
/**
* This activity is shown to the user for him/her to disable USB mass storage.
* It uses the alert dialog style. It will be launched from a notification.
*/
public class UsbStorageStopActivity extends AlertActivity implements DialogInterface.OnClickListener {
private static final int POSITIVE_BUTTON = AlertDialog.BUTTON_POSITIVE;
/** Used to detect when the USB cable is unplugged, so we can call finish() */
private BroadcastReceiver mBatteryReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction() == Intent.ACTION_BATTERY_CHANGED) {
handleBatteryChanged(intent);
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set up the "dialog"
final AlertController.AlertParams p = mAlertParams;
p.mIconId = com.android.internal.R.drawable.ic_dialog_alert;
p.mTitle = getString(com.android.internal.R.string.usb_storage_stop_title);
p.mMessage = getString(com.android.internal.R.string.usb_storage_stop_message);
p.mPositiveButtonText = getString(com.android.internal.R.string.usb_storage_stop_button_mount);
p.mPositiveButtonListener = this;
p.mNegativeButtonText = getString(com.android.internal.R.string.usb_storage_stop_button_unmount);
p.mNegativeButtonListener = this;
setupAlert();
}
@Override
protected void onResume() {
super.onResume();
registerReceiver(mBatteryReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(mBatteryReceiver);
}
/**
* {@inheritDoc}
*/
public void onClick(DialogInterface dialog, int which) {
if (which == POSITIVE_BUTTON) {
stopUsbStorage();
}
// No matter what, finish the activity
finish();
}
private void stopUsbStorage() {
IMountService mountService = IMountService.Stub.asInterface(ServiceManager
.getService("mount"));
if (mountService == null) {
showStoppingError();
return;
}
try {
mountService.setMassStorageEnabled(false);
} catch (RemoteException e) {
showStoppingError();
return;
}
}
private void handleBatteryChanged(Intent intent) {
int pluggedType = intent.getIntExtra("plugged", 0);
if (pluggedType == 0) {
// It was disconnected from the plug, so finish
finish();
}
}
private void showStoppingError() {
Toast.makeText(this, com.android.internal.R.string.usb_storage_stop_error_message,
Toast.LENGTH_LONG).show();
}
}
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