/*
* Copyright (C) 2010 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.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.os.storage.StorageVolume;
import android.text.format.Formatter;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import com.android.settings.R;
import com.android.settings.deviceinfo.StorageMeasurement.FileInfo;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* This class handles the selection and removal of Misc files.
*/
public class MiscFilesHandler extends ListActivity {
private static final String TAG = "MemorySettings";
private String mNumSelectedFormat;
private String mNumBytesSelectedFormat;
private MemoryMearurementAdapter mAdapter;
private LayoutInflater mInflater;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setFinishOnTouchOutside(true);
setTitle(R.string.misc_files);
mNumSelectedFormat = getString(R.string.misc_files_selected_count);
mNumBytesSelectedFormat = getString(R.string.misc_files_selected_count_bytes);
mAdapter = new MemoryMearurementAdapter(this);
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
setContentView(R.layout.settings_storage_miscfiles_list);
ListView lv = getListView();
lv.setItemsCanFocus(true);
lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
lv.setMultiChoiceModeListener(new ModeCallback(this));
setListAdapter(mAdapter);
}
private class ModeCallback implements ListView.MultiChoiceModeListener {
private int mDataCount;
private final Context mContext;
public ModeCallback(Context context) {
mContext = context;
mDataCount = mAdapter.getCount();
}
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
final MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.misc_files_menu, menu);
return true;
}
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return true;
}
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
ListView lv = getListView();
switch (item.getItemId()) {
case R.id.action_delete:
// delete the files selected
SparseBooleanArray checkedItems = lv.getCheckedItemPositions();
int checkedCount = getListView().getCheckedItemCount();
if (checkedCount > mDataCount) {
throw new IllegalStateException("checked item counts do not match. " +
"checkedCount: " + checkedCount + ", dataSize: " + mDataCount);
}
if (mDataCount > 0) {
ArrayList<Object> toRemove = new ArrayList<Object>();
for (int i = 0; i < mDataCount; i++) {
if (!checkedItems.get(i)) {
//item not selected
continue;
}
if (StorageMeasurement.LOGV) {
Log.i(TAG, "deleting: " + mAdapter.getItem(i));
}
// delete the file
File file = new File(mAdapter.getItem(i).mFileName);
if (file.isDirectory()) {
deleteDir(file);
} else {
file.delete();
}
toRemove.add(mAdapter.getItem(i));
}
mAdapter.removeAll(toRemove);
mAdapter.notifyDataSetChanged();
mDataCount = mAdapter.getCount();
}
mode.finish();
break;
case R.id.action_select_all:
// check ALL items
for (int i = 0; i < mDataCount; i++) {
lv.setItemChecked(i, true);
}
// update the title and subtitle with number selected and numberBytes selected
onItemCheckedStateChanged(mode, 1, 0, true);
break;
}
return true;
}
// Deletes all files and subdirectories under given dir.
// Returns true if all deletions were successful.
// If a deletion fails, the method stops attempting to delete and returns false.
private boolean deleteDir(File dir) {
if (dir.isDirectory()) {
String[] children = dir.list();
for (int i=0; i < children.length; i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
}
// The directory is now empty so delete it
return dir.delete();
}
public void onDestroyActionMode(ActionMode mode) {
// This block intentionally left blank
}
public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
boolean checked) {
ListView lv = getListView();
int numChecked = lv.getCheckedItemCount();
mode.setTitle(String.format(mNumSelectedFormat, numChecked, mAdapter.getCount()));
// total the sizes of all items selected so far
SparseBooleanArray checkedItems = lv.getCheckedItemPositions();
long selectedDataSize = 0;
if (numChecked > 0) {
for (int i = 0; i < mDataCount; i++) {
if (checkedItems.get(i)) {
// item is checked
selectedDataSize += mAdapter.getItem(i).mSize;
}
}
}
mode.setSubtitle(String.format(mNumBytesSelectedFormat,
Formatter.formatFileSize(mContext, selectedDataSize),
Formatter.formatFileSize(mContext, mAdapter.getDataSize())));
}
}
class MemoryMearurementAdapter extends BaseAdapter {
private ArrayList<StorageMeasurement.FileInfo> mData = null;
private long mDataSize = 0;
private Context mContext;
public MemoryMearurementAdapter(Activity activity) {
mContext = activity;
final StorageVolume storageVolume = activity.getIntent().getParcelableExtra(
StorageVolume.EXTRA_STORAGE_VOLUME);
StorageMeasurement mMeasurement =
StorageMeasurement.getInstance(activity, storageVolume, false /*Unused as a key*/);
if (mMeasurement == null) return;
mData = (ArrayList<StorageMeasurement.FileInfo>) mMeasurement.mFileInfoForMisc;
if (mData != null) {
for (StorageMeasurement.FileInfo info : mData) {
mDataSize += info.mSize;
}
}
}
@Override
public int getCount() {
return (mData == null) ? 0 : mData.size();
}
@Override
public StorageMeasurement.FileInfo getItem(int position) {
if (mData == null || mData.size() <= position) {
return null;
}
return mData.get(position);
}
@Override
public long getItemId(int position) {
if (mData == null || mData.size() <= position) {
return 0;
}
return mData.get(position).mId;
}
public void removeAll(List<Object> objs) {
if (mData == null) {
return;
}
for (Object o : objs) {
mData.remove(o);
mDataSize -= ((StorageMeasurement.FileInfo) o).mSize;
}
}
public long getDataSize() {
return mDataSize;
}
@Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final FileItemInfoLayout view = (convertView == null) ?
(FileItemInfoLayout) mInflater.inflate(R.layout.settings_storage_miscfiles,
parent, false) : (FileItemInfoLayout) convertView;
FileInfo item = getItem(position);
view.setFileName(item.mFileName);
view.setFileSize(Formatter.formatFileSize(mContext, item.mSize));
final ListView listView = (ListView) parent;
final int listPosition = position;
view.getCheckBox().setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
listView.setItemChecked(listPosition, isChecked);
}
});
view.setOnLongClickListener(new OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (listView.getCheckedItemCount() > 0) {
return false;
}
listView.setItemChecked(listPosition, !view.isChecked());
return true;
}
});
view.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (listView.getCheckedItemCount() > 0) {
listView.setItemChecked(listPosition, !view.isChecked());
}
}
});
return view;
}
}
}