MiscFilesHandler.java revision 8128ff8cbe239c1d50f8ba12cf375c754862df0a
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.settings.deviceinfo; 18 19import com.android.settings.R; 20import com.android.settings.deviceinfo.MemoryMeasurement.FileInfo; 21 22import android.app.ListActivity; 23import android.content.Context; 24import android.os.Bundle; 25import android.text.format.Formatter; 26import android.util.Log; 27import android.util.SparseBooleanArray; 28import android.view.ActionMode; 29import android.view.LayoutInflater; 30import android.view.Menu; 31import android.view.MenuInflater; 32import android.view.MenuItem; 33import android.view.View; 34import android.view.View.OnClickListener; 35import android.view.View.OnLongClickListener; 36import android.view.ViewGroup; 37import android.widget.BaseAdapter; 38import android.widget.CompoundButton; 39import android.widget.CompoundButton.OnCheckedChangeListener; 40import android.widget.ListView; 41 42import java.io.File; 43import java.util.ArrayList; 44import java.util.List; 45 46/** 47 * This class handles the selection and removal of Misc files. 48 */ 49public class MiscFilesHandler extends ListActivity { 50 private static final String TAG = "MemorySettings"; 51 private String mNumSelectedFormat; 52 private String mNumBytesSelectedFormat; 53 private MemoryMearurementAdapter mAdapter; 54 private LayoutInflater mInflater; 55 56 @Override 57 public void onCreate(Bundle savedInstanceState) { 58 super.onCreate(savedInstanceState); 59 setFinishOnTouchOutside(true); 60 setTitle(R.string.misc_files); 61 mNumSelectedFormat = getString(R.string.misc_files_selected_count); 62 mNumBytesSelectedFormat = getString(R.string.misc_files_selected_count_bytes); 63 mAdapter = new MemoryMearurementAdapter(this); 64 mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE); 65 setContentView(R.layout.settings_storage_miscfiles_list); 66 ListView lv = getListView(); 67 lv.setItemsCanFocus(true); 68 lv.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL); 69 lv.setMultiChoiceModeListener(new ModeCallback(this)); 70 setListAdapter(mAdapter); 71 } 72 73 private class ModeCallback implements ListView.MultiChoiceModeListener { 74 private int mDataCount; 75 private final Context mContext; 76 77 public ModeCallback(Context context) { 78 mContext = context; 79 mDataCount = mAdapter.getCount(); 80 } 81 82 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 83 final MenuInflater inflater = getMenuInflater(); 84 inflater.inflate(R.menu.misc_files_menu, menu); 85 return true; 86 } 87 88 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 89 return true; 90 } 91 92 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 93 ListView lv = getListView(); 94 switch (item.getItemId()) { 95 case R.id.action_delete: 96 // delete the files selected 97 SparseBooleanArray checkedItems = lv.getCheckedItemPositions(); 98 int checkedCount = getListView().getCheckedItemCount(); 99 if (checkedCount > mDataCount) { 100 throw new IllegalStateException("checked item counts do not match. " + 101 "checkedCount: " + checkedCount + ", dataSize: " + mDataCount); 102 } 103 if (mDataCount > 0) { 104 ArrayList<Object> toRemove = new ArrayList<Object>(); 105 for (int i = 0; i < mDataCount; i++) { 106 if (!checkedItems.get(i)) { 107 //item not selected 108 continue; 109 } 110 if (MemoryMeasurement.LOGV) { 111 Log.i(TAG, "deleting: " + mAdapter.getItem(i)); 112 } 113 // delete the file 114 File file = new File(mAdapter.getItem(i).mFileName); 115 if (file.isDirectory()) { 116 deleteDir(file); 117 } else { 118 file.delete(); 119 } 120 toRemove.add(mAdapter.getItem(i)); 121 } 122 mAdapter.removeAll(toRemove); 123 mAdapter.notifyDataSetChanged(); 124 mDataCount = mAdapter.getCount(); 125 } 126 mode.finish(); 127 break; 128 129 case R.id.action_select_all: 130 // check ALL items 131 for (int i = 0; i < mDataCount; i++) { 132 lv.setItemChecked(i, true); 133 } 134 // update the title and subtitle with number selected and numberBytes selected 135 onItemCheckedStateChanged(mode, 1, 0, true); 136 break; 137 } 138 return true; 139 } 140 141 // Deletes all files and subdirectories under given dir. 142 // Returns true if all deletions were successful. 143 // If a deletion fails, the method stops attempting to delete and returns false. 144 private boolean deleteDir(File dir) { 145 if (dir.isDirectory()) { 146 String[] children = dir.list(); 147 for (int i=0; i < children.length; i++) { 148 boolean success = deleteDir(new File(dir, children[i])); 149 if (!success) { 150 return false; 151 } 152 } 153 } 154 // The directory is now empty so delete it 155 return dir.delete(); 156 } 157 158 public void onDestroyActionMode(ActionMode mode) { 159 } 160 161 public void onItemCheckedStateChanged(ActionMode mode, int position, long id, 162 boolean checked) { 163 ListView lv = getListView(); 164 int numChecked = lv.getCheckedItemCount(); 165 mode.setTitle(String.format(mNumSelectedFormat, numChecked, mAdapter.getCount())); 166 167 // total the sizes of all items selected so far 168 SparseBooleanArray checkedItems = lv.getCheckedItemPositions(); 169 long selectedDataSize = 0; 170 if (numChecked > 0) { 171 for (int i = 0; i < mDataCount; i++) { 172 if (checkedItems.get(i)) { 173 // item is checked 174 selectedDataSize += mAdapter.getItem(i).mSize; 175 } 176 } 177 } 178 mode.setSubtitle(String.format(mNumBytesSelectedFormat, 179 Formatter.formatFileSize(mContext, selectedDataSize), 180 Formatter.formatFileSize(mContext, mAdapter.getDataSize()))); 181 } 182 } 183 184 public class MemoryMearurementAdapter extends BaseAdapter { 185 private ArrayList<MemoryMeasurement.FileInfo> mData = null; 186 private long mDataSize = 0; 187 private Context mContext; 188 189 public MemoryMearurementAdapter(Context context) { 190 mContext = context; 191 MemoryMeasurement mMeasurement = MemoryMeasurement.getInstance(context); 192 mData = (ArrayList<MemoryMeasurement.FileInfo>)mMeasurement.mFileInfoForMisc; 193 if (mData != null) { 194 for (MemoryMeasurement.FileInfo info : mData) { 195 mDataSize += info.mSize; 196 } 197 } 198 } 199 200 @Override 201 public int getCount() { 202 return (mData == null) ? 0 : mData.size(); 203 } 204 205 @Override 206 public MemoryMeasurement.FileInfo getItem(int position) { 207 if (mData == null || mData.size() <= position) { 208 return null; 209 } 210 return mData.get(position); 211 } 212 213 @Override 214 public long getItemId(int position) { 215 if (mData == null || mData.size() <= position) { 216 return 0; 217 } 218 return mData.get(position).mId; 219 } 220 public void removeAll(List<Object> objs) { 221 if (mData == null) { 222 return; 223 } 224 for (Object o : objs) { 225 mData.remove(o); 226 mDataSize -= ((MemoryMeasurement.FileInfo) o).mSize; 227 } 228 } 229 230 public long getDataSize() { 231 return mDataSize; 232 } 233 234 @Override 235 public void notifyDataSetChanged() { 236 super.notifyDataSetChanged(); 237 } 238 239 @Override 240 public View getView(int position, View convertView, ViewGroup parent) { 241 final FileItemInfoLayout view = (convertView == null) ? 242 (FileItemInfoLayout) mInflater.inflate(R.layout.settings_storage_miscfiles, 243 parent, false) : (FileItemInfoLayout) convertView; 244 FileInfo item = getItem(position); 245 view.setFileName(item.mFileName); 246 view.setFileSize(Formatter.formatFileSize(mContext, item.mSize)); 247 final ListView listView = (ListView) parent; 248 final int listPosition = position; 249 view.getCheckBox().setOnCheckedChangeListener(new OnCheckedChangeListener() { 250 251 @Override 252 public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 253 listView.setItemChecked(listPosition, isChecked); 254 } 255 256 }); 257 view.setOnLongClickListener(new OnLongClickListener() { 258 @Override 259 public boolean onLongClick(View v) { 260 if (listView.getCheckedItemCount() > 0) { 261 return false; 262 } 263 listView.setItemChecked(listPosition, !view.isChecked()); 264 return true; 265 } 266 }); 267 view.setOnClickListener(new OnClickListener() { 268 @Override 269 public void onClick(View v) { 270 if (listView.getCheckedItemCount() > 0) { 271 listView.setItemChecked(listPosition, !view.isChecked()); 272 } 273 } 274 }); 275 return view; 276 } 277 } 278}