src/com/android/settings/deviceinfo/MiscFilesHandler.java - platform/packages/apps/Settings - Git at Google

 /*
  * 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) {
             String[] children = dir.list();
             if (children != null) {
                 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);
             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;
         }
     }
 }
	/*
	* 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) {
	String[] children = dir.list();
	if (children != null) {
	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);
	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;
	}
	}
	}