/*
* Copyright (C) 2008 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.app.DialogFragment;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.IPackageDataObserver;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.hardware.usb.UsbManager;
import android.os.Bundle;
import android.os.Environment;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.storage.IMountService;
import android.os.storage.StorageEventListener;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import com.android.settings.Utils;
import com.google.common.collect.Lists;
import java.util.ArrayList;
import java.util.List;
/**
* Panel showing storage usage on disk for known {@link StorageVolume} returned
* by {@link StorageManager}. Calculates and displays usage of data types.
*/
public class Memory extends SettingsPreferenceFragment {
private static final String TAG = "MemorySettings";
private static final String TAG_CONFIRM_CLEAR_CACHE = "confirmClearCache";
private static final int DLG_CONFIRM_UNMOUNT = 1;
private static final int DLG_ERROR_UNMOUNT = 2;
// The mountToggle Preference that has last been clicked.
// Assumes no two successive unmount event on 2 different volumes are performed before the first
// one's preference is disabled
private static Preference sLastClickedMountToggle;
private static String sClickedMountPoint;
// Access using getMountService()
private IMountService mMountService;
private StorageManager mStorageManager;
private UsbManager mUsbManager;
private ArrayList<StorageVolumePreferenceCategory> mCategories = Lists.newArrayList();
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
final Context context = getActivity();
mUsbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
mStorageManager = StorageManager.from(context);
mStorageManager.registerListener(mStorageListener);
addPreferencesFromResource(R.xml.device_info_memory);
addCategory(StorageVolumePreferenceCategory.buildForInternal(context));
final StorageVolume[] storageVolumes = mStorageManager.getVolumeList();
for (StorageVolume volume : storageVolumes) {
if (!volume.isEmulated()) {
addCategory(StorageVolumePreferenceCategory.buildForPhysical(context, volume));
}
}
setHasOptionsMenu(true);
}
private void addCategory(StorageVolumePreferenceCategory category) {
mCategories.add(category);
getPreferenceScreen().addPreference(category);
category.init();
}
private boolean isMassStorageEnabled() {
// Mass storage is enabled if primary volume supports it
final StorageVolume[] volumes = mStorageManager.getVolumeList();
final StorageVolume primary = StorageManager.getPrimaryVolume(volumes);
return primary != null && primary.allowMassStorage();
}
@Override
public void onResume() {
super.onResume();
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_SCANNER_STARTED);
intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentFilter.addDataScheme("file");
getActivity().registerReceiver(mMediaScannerReceiver, intentFilter);
intentFilter = new IntentFilter();
intentFilter.addAction(UsbManager.ACTION_USB_STATE);
getActivity().registerReceiver(mMediaScannerReceiver, intentFilter);
for (StorageVolumePreferenceCategory category : mCategories) {
category.onResume();
}
}
StorageEventListener mStorageListener = new StorageEventListener() {
@Override
public void onStorageStateChanged(String path, String oldState, String newState) {
Log.i(TAG, "Received storage state changed notification that " + path +
" changed state from " + oldState + " to " + newState);
for (StorageVolumePreferenceCategory category : mCategories) {
final StorageVolume volume = category.getStorageVolume();
if (volume != null && path.equals(volume.getPath())) {
category.onStorageStateChanged();
break;
}
}
}
};
@Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(mMediaScannerReceiver);
for (StorageVolumePreferenceCategory category : mCategories) {
category.onPause();
}
}
@Override
public void onDestroy() {
if (mStorageManager != null && mStorageListener != null) {
mStorageManager.unregisterListener(mStorageListener);
}
super.onDestroy();
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.storage, menu);
}
@Override
public void onPrepareOptionsMenu(Menu menu) {
final MenuItem usb = menu.findItem(R.id.storage_usb);
usb.setVisible(true);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.storage_usb:
if (getActivity() instanceof PreferenceActivity) {
((PreferenceActivity) getActivity()).startPreferencePanel(
UsbSettings.class.getCanonicalName(),
null,
R.string.storage_title_usb, null,
this, 0);
} else {
startFragment(this, UsbSettings.class.getCanonicalName(), -1, null);
}
return true;
}
return super.onOptionsItemSelected(item);
}
private synchronized IMountService getMountService() {
if (mMountService == null) {
IBinder service = ServiceManager.getService("mount");
if (service != null) {
mMountService = IMountService.Stub.asInterface(service);
} else {
Log.e(TAG, "Can't get mount service");
}
}
return mMountService;
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
if (StorageVolumePreferenceCategory.KEY_CACHE.equals(preference.getKey())) {
ConfirmClearCacheFragment.show(this);
return true;
}
for (StorageVolumePreferenceCategory category : mCategories) {
Intent intent = category.intentForClick(preference);
if (intent != null) {
// Don't go across app boundary if monkey is running
if (!Utils.isMonkeyRunning()) {
startActivity(intent);
}
return true;
}
final StorageVolume volume = category.getStorageVolume();
if (volume != null && category.mountToggleClicked(preference)) {
sLastClickedMountToggle = preference;
sClickedMountPoint = volume.getPath();
String state = mStorageManager.getVolumeState(volume.getPath());
if (Environment.MEDIA_MOUNTED.equals(state) ||
Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
unmount();
} else {
mount();
}
return true;
}
}
return false;
}
private final BroadcastReceiver mMediaScannerReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(UsbManager.ACTION_USB_STATE)) {
boolean isUsbConnected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);
String usbFunction = mUsbManager.getDefaultFunction();
for (StorageVolumePreferenceCategory category : mCategories) {
category.onUsbStateChanged(isUsbConnected, usbFunction);
}
} else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
for (StorageVolumePreferenceCategory category : mCategories) {
category.onMediaScannerFinished();
}
}
}
};
@Override
public Dialog onCreateDialog(int id) {
switch (id) {
case DLG_CONFIRM_UNMOUNT:
return new AlertDialog.Builder(getActivity())
.setTitle(R.string.dlg_confirm_unmount_title)
.setPositiveButton(R.string.dlg_ok, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
doUnmount();
}})
.setNegativeButton(R.string.cancel, null)
.setMessage(R.string.dlg_confirm_unmount_text)
.create();
case DLG_ERROR_UNMOUNT:
return new AlertDialog.Builder(getActivity())
.setTitle(R.string.dlg_error_unmount_title)
.setNeutralButton(R.string.dlg_ok, null)
.setMessage(R.string.dlg_error_unmount_text)
.create();
}
return null;
}
private void doUnmount() {
// Present a toast here
Toast.makeText(getActivity(), R.string.unmount_inform_text, Toast.LENGTH_SHORT).show();
IMountService mountService = getMountService();
try {
sLastClickedMountToggle.setEnabled(false);
sLastClickedMountToggle.setTitle(getString(R.string.sd_ejecting_title));
sLastClickedMountToggle.setSummary(getString(R.string.sd_ejecting_summary));
mountService.unmountVolume(sClickedMountPoint, true, false);
} catch (RemoteException e) {
// Informative dialog to user that unmount failed.
showDialogInner(DLG_ERROR_UNMOUNT);
}
}
private void showDialogInner(int id) {
removeDialog(id);
showDialog(id);
}
private boolean hasAppsAccessingStorage() throws RemoteException {
IMountService mountService = getMountService();
int stUsers[] = mountService.getStorageUsers(sClickedMountPoint);
if (stUsers != null && stUsers.length > 0) {
return true;
}
// TODO FIXME Parameterize with mountPoint and uncomment.
// On HC-MR2, no apps can be installed on sd and the emulated internal storage is not
// removable: application cannot interfere with unmount
/*
ActivityManager am = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
List<ApplicationInfo> list = am.getRunningExternalApplications();
if (list != null && list.size() > 0) {
return true;
}
*/
// Better safe than sorry. Assume the storage is used to ask for confirmation.
return true;
}
private void unmount() {
// Check if external media is in use.
try {
if (hasAppsAccessingStorage()) {
// Present dialog to user
showDialogInner(DLG_CONFIRM_UNMOUNT);
} else {
doUnmount();
}
} catch (RemoteException e) {
// Very unlikely. But present an error dialog anyway
Log.e(TAG, "Is MountService running?");
showDialogInner(DLG_ERROR_UNMOUNT);
}
}
private void mount() {
IMountService mountService = getMountService();
try {
if (mountService != null) {
mountService.mountVolume(sClickedMountPoint);
} else {
Log.e(TAG, "Mount service is null, can't mount");
}
} catch (RemoteException ex) {
// Not much can be done
}
}
private void onCacheCleared() {
for (StorageVolumePreferenceCategory category : mCategories) {
category.onCacheCleared();
}
}
private static class ClearCacheObserver extends IPackageDataObserver.Stub {
private final Memory mTarget;
private int mRemaining;
public ClearCacheObserver(Memory target, int remaining) {
mTarget = target;
mRemaining = remaining;
}
@Override
public void onRemoveCompleted(final String packageName, final boolean succeeded) {
synchronized (this) {
if (--mRemaining == 0) {
mTarget.onCacheCleared();
}
}
}
}
/**
* Dialog to request user confirmation before clearing all cache data.
*/
public static class ConfirmClearCacheFragment extends DialogFragment {
public static void show(Memory parent) {
if (!parent.isAdded()) return;
final ConfirmClearCacheFragment dialog = new ConfirmClearCacheFragment();
dialog.setTargetFragment(parent, 0);
dialog.show(parent.getFragmentManager(), TAG_CONFIRM_CLEAR_CACHE);
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Context context = getActivity();
final AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle(R.string.memory_clear_cache_title);
builder.setMessage(getString(R.string.memory_clear_cache_message));
builder.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
final Memory target = (Memory) getTargetFragment();
final PackageManager pm = context.getPackageManager();
final List<PackageInfo> infos = pm.getInstalledPackages(0);
final ClearCacheObserver observer = new ClearCacheObserver(
target, infos.size());
for (PackageInfo info : infos) {
pm.deleteApplicationCacheFiles(info.packageName, observer);
}
}
});
builder.setNegativeButton(android.R.string.cancel, null);
return builder.create();
}
}
}