packages/DocumentsUI/src/com/android/documentsui/DirectoryFragment.java - platform/frameworks/base - Gitiles

 /*
  * Copyright (C) 2013 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.documentsui;

 import android.app.Fragment;
 import android.app.FragmentManager;
 import android.app.FragmentTransaction;
 import android.app.LoaderManager.LoaderCallbacks;
 import android.content.Context;
 import android.content.Loader;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.DocumentsContract;
 import android.text.format.DateUtils;
 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.ViewGroup;
 import android.widget.AbsListView;
 import android.widget.AbsListView.MultiChoiceModeListener;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.BaseAdapter;
 import android.widget.GridView;
 import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.TextView;

 import com.android.documentsui.DocumentsActivity.DisplayState;
 import com.android.documentsui.model.Document;
 import com.android.internal.util.Predicate;
 import com.google.android.collect.Lists;

 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;

 /**
  * Display the documents inside a single directory.
  */
 public class DirectoryFragment extends Fragment {

     // TODO: show storage backend in item views when requested

     private ListView mListView;
     private GridView mGridView;

     private AbsListView mCurrentView;

     public static final int TYPE_NORMAL = 1;
     public static final int TYPE_SEARCH = 2;
     public static final int TYPE_RECENT_OPEN = 3;
     public static final int TYPE_RECENT_CREATE = 4;

     private int mType = TYPE_NORMAL;

     private DocumentsAdapter mAdapter;
     private LoaderCallbacks<List<Document>> mCallbacks;

     private static final String EXTRA_URI = "uri";

     private static final int LOADER_DOCUMENTS = 2;

     public static void show(FragmentManager fm, Uri uri) {
         final Bundle args = new Bundle();
         args.putParcelable(EXTRA_URI, uri);

         final DirectoryFragment fragment = new DirectoryFragment();
         fragment.setArguments(args);

         final FragmentTransaction ft = fm.beginTransaction();
         ft.replace(R.id.container_directory, fragment);
         ft.commitAllowingStateLoss();
     }

     public static DirectoryFragment get(FragmentManager fm) {
         // TODO: deal with multiple directories shown at once
         return (DirectoryFragment) fm.findFragmentById(R.id.container_directory);
     }

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setHasOptionsMenu(true);
     }

     @Override
     public View onCreateView(
             LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         final Context context = inflater.getContext();

         final View view = inflater.inflate(R.layout.fragment_directory, container, false);

         mListView = (ListView) view.findViewById(R.id.list);
         mListView.setOnItemClickListener(mItemListener);
         mListView.setMultiChoiceModeListener(mMultiListener);

         mGridView = (GridView) view.findViewById(R.id.grid);
         mGridView.setOnItemClickListener(mItemListener);
         mGridView.setMultiChoiceModeListener(mMultiListener);

         mAdapter = new DocumentsAdapter();
         updateMode();

         final Uri uri = getArguments().getParcelable(EXTRA_URI);

         if (uri.getQueryParameter(DocumentsContract.PARAM_QUERY) != null) {
             mType = TYPE_SEARCH;
         } else if (RecentsProvider.buildRecentOpen().equals(uri)) {
             mType = TYPE_RECENT_OPEN;
         } else if (RecentsProvider.buildRecentCreate().equals(uri)) {
             mType = TYPE_RECENT_CREATE;
         } else {
             mType = TYPE_NORMAL;
         }

         mCallbacks = new LoaderCallbacks<List<Document>>() {
             @Override
             public Loader<List<Document>> onCreateLoader(int id, Bundle args) {
                 final DisplayState state = getDisplayState(DirectoryFragment.this);

                 final Uri contentsUri;
                 if (mType == TYPE_NORMAL) {
                     contentsUri = DocumentsContract.buildContentsUri(uri);
                 } else {
                     contentsUri = uri;
                 }

                 final Predicate<Document> filter = new MimePredicate(state.acceptMimes);

                 final Comparator<Document> sortOrder;
                 if (state.sortOrder == DisplayState.SORT_ORDER_DATE || mType == TYPE_RECENT_OPEN
                         || mType == TYPE_RECENT_CREATE) {
                     sortOrder = new Document.DateComparator();
                 } else if (state.sortOrder == DisplayState.SORT_ORDER_NAME) {
                     sortOrder = new Document.NameComparator();
                 } else {
                     throw new IllegalArgumentException("Unknown sort order " + state.sortOrder);
                 }

                 return new DirectoryLoader(context, contentsUri, mType, filter, sortOrder);
             }

             @Override
             public void onLoadFinished(Loader<List<Document>> loader, List<Document> data) {
                 mAdapter.swapDocuments(data);
             }

             @Override
             public void onLoaderReset(Loader<List<Document>> loader) {
                 mAdapter.swapDocuments(null);
             }
         };

         return view;
     }

     @Override
     public void onStart() {
         super.onStart();
         getLoaderManager().restartLoader(LOADER_DOCUMENTS, getArguments(), mCallbacks);
     }

     @Override
     public void onStop() {
         super.onStop();
         getLoaderManager().destroyLoader(LOADER_DOCUMENTS);
     }

     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         super.onCreateOptionsMenu(menu, inflater);
         inflater.inflate(R.menu.directory, menu);
     }

     @Override
     public void onPrepareOptionsMenu(Menu menu) {
         super.onPrepareOptionsMenu(menu);
         final DisplayState state = getDisplayState(this);
         menu.findItem(R.id.menu_grid).setVisible(state.mode != DisplayState.MODE_GRID);
         menu.findItem(R.id.menu_list).setVisible(state.mode != DisplayState.MODE_LIST);
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         final DisplayState state = getDisplayState(this);
         final int id = item.getItemId();
         if (id == R.id.menu_grid) {
             state.mode = DisplayState.MODE_GRID;
             updateMode();
             getFragmentManager().invalidateOptionsMenu();
             return true;
         } else if (id == R.id.menu_list) {
             state.mode = DisplayState.MODE_LIST;
             updateMode();
             getFragmentManager().invalidateOptionsMenu();
             return true;
         } else {
             return super.onOptionsItemSelected(item);
         }
     }

     private void updateMode() {
         final DisplayState state = getDisplayState(this);

         mListView.setVisibility(state.mode == DisplayState.MODE_LIST ? View.VISIBLE : View.GONE);
         mGridView.setVisibility(state.mode == DisplayState.MODE_GRID ? View.VISIBLE : View.GONE);

         final int choiceMode;
         if (state.allowMultiple) {
             choiceMode = ListView.CHOICE_MODE_MULTIPLE_MODAL;
         } else {
             choiceMode = ListView.CHOICE_MODE_NONE;
         }

         if (state.mode == DisplayState.MODE_GRID) {
             mListView.setAdapter(null);
             mListView.setChoiceMode(ListView.CHOICE_MODE_NONE);
             mGridView.setAdapter(mAdapter);
             mGridView.setColumnWidth(getResources().getDimensionPixelSize(R.dimen.grid_width));
             mGridView.setNumColumns(GridView.AUTO_FIT);
             mGridView.setChoiceMode(choiceMode);
             mCurrentView = mGridView;
         } else if (state.mode == DisplayState.MODE_LIST) {
             mGridView.setAdapter(null);
             mGridView.setChoiceMode(ListView.CHOICE_MODE_NONE);
             mListView.setAdapter(mAdapter);
             mListView.setChoiceMode(choiceMode);
             mCurrentView = mListView;
         } else {
             throw new IllegalStateException();
         }
     }

     public void updateSortOrder() {
         getLoaderManager().restartLoader(LOADER_DOCUMENTS, getArguments(), mCallbacks);
         mListView.smoothScrollToPosition(0);
         mGridView.smoothScrollToPosition(0);
     }

     private OnItemClickListener mItemListener = new OnItemClickListener() {
         @Override
         public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
             final Document doc = mAdapter.getItem(position);
             ((DocumentsActivity) getActivity()).onDocumentPicked(doc);
         }
     };

     private MultiChoiceModeListener mMultiListener = new MultiChoiceModeListener() {
         @Override
         public boolean onCreateActionMode(ActionMode mode, Menu menu) {
             mode.getMenuInflater().inflate(R.menu.mode_directory, menu);
             return true;
         }

         @Override
         public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
             return true;
         }

         @Override
         public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
             if (item.getItemId() == R.id.menu_open) {
                 final Uri uri = getArguments().getParcelable(EXTRA_URI);
                 final SparseBooleanArray checked = mCurrentView.getCheckedItemPositions();
                 final ArrayList<Document> docs = Lists.newArrayList();

                 final int size = checked.size();
                 for (int i = 0; i < size; i++) {
                     if (checked.valueAt(i)) {
                         final Document doc = mAdapter.getItem(checked.keyAt(i));
                         docs.add(doc);
                     }
                 }

                 ((DocumentsActivity) getActivity()).onDocumentsPicked(docs);
                 return true;
             } else {
                 return false;
             }
         }

         @Override
         public void onDestroyActionMode(ActionMode mode) {
             // ignored
         }

         @Override
         public void onItemCheckedStateChanged(
                 ActionMode mode, int position, long id, boolean checked) {
             if (checked) {
                 // Directories cannot be checked
                 final Document doc = mAdapter.getItem(position);
                 if (DocumentsContract.MIME_TYPE_DIRECTORY.equals(doc.mimeType)) {
                     mCurrentView.setItemChecked(position, false);
                 }
             }

             mode.setTitle(getResources()
                     .getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount()));
         }
     };

     private static DisplayState getDisplayState(Fragment fragment) {
         return ((DocumentsActivity) fragment.getActivity()).getDisplayState();
     }

     private class DocumentsAdapter extends BaseAdapter {
         private List<Document> mDocuments;

         public DocumentsAdapter() {
         }

         public void swapDocuments(List<Document> documents) {
             mDocuments = documents;
             notifyDataSetChanged();
         }

         @Override
         public View getView(int position, View convertView, ViewGroup parent) {
             final Context context = parent.getContext();

             if (convertView == null) {
                 final LayoutInflater inflater = LayoutInflater.from(context);
                 final DisplayState state = getDisplayState(DirectoryFragment.this);
                 if (state.mode == DisplayState.MODE_LIST) {
                     convertView = inflater.inflate(R.layout.item_doc_list, parent, false);
                 } else if (state.mode == DisplayState.MODE_GRID) {
                     convertView = inflater.inflate(R.layout.item_doc_grid, parent, false);
                 } else {
                     throw new IllegalStateException();
                 }
             }

             final Document doc = getItem(position);

             final TextView title = (TextView) convertView.findViewById(android.R.id.title);
             final TextView summary = (TextView) convertView.findViewById(android.R.id.summary);
             final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon);

             if (doc.isThumbnailSupported()) {
                 // TODO: load thumbnails async
                 icon.setImageURI(doc.uri);
             } else {
                 icon.setImageDrawable(RootsCache.resolveDocumentIcon(
                         context, doc.uri.getAuthority(), doc.mimeType));
             }

             title.setText(doc.displayName);
             if (summary != null) {
                 summary.setText(DateUtils.getRelativeTimeSpanString(doc.lastModified));
             }

             return convertView;
         }

         @Override
         public int getCount() {
             return mDocuments != null ? mDocuments.size() : 0;
         }

         @Override
         public Document getItem(int position) {
             return mDocuments.get(position);
         }

         @Override
         public long getItemId(int position) {
             return getItem(position).uri.hashCode();
         }
     }
 }
	/*
	* Copyright (C) 2013 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.documentsui;

	import android.app.Fragment;
	import android.app.FragmentManager;
	import android.app.FragmentTransaction;
	import android.app.LoaderManager.LoaderCallbacks;
	import android.content.Context;
	import android.content.Loader;
	import android.net.Uri;
	import android.os.Bundle;
	import android.provider.DocumentsContract;
	import android.text.format.DateUtils;
	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.ViewGroup;
	import android.widget.AbsListView;
	import android.widget.AbsListView.MultiChoiceModeListener;
	import android.widget.AdapterView;
	import android.widget.AdapterView.OnItemClickListener;
	import android.widget.BaseAdapter;
	import android.widget.GridView;
	import android.widget.ImageView;
	import android.widget.ListView;
	import android.widget.TextView;

	import com.android.documentsui.DocumentsActivity.DisplayState;
	import com.android.documentsui.model.Document;
	import com.android.internal.util.Predicate;
	import com.google.android.collect.Lists;

	import java.util.ArrayList;
	import java.util.Comparator;
	import java.util.List;

	/**
	* Display the documents inside a single directory.
	*/
	public class DirectoryFragment extends Fragment {

	// TODO: show storage backend in item views when requested

	private ListView mListView;
	private GridView mGridView;

	private AbsListView mCurrentView;

	public static final int TYPE_NORMAL = 1;
	public static final int TYPE_SEARCH = 2;
	public static final int TYPE_RECENT_OPEN = 3;
	public static final int TYPE_RECENT_CREATE = 4;

	private int mType = TYPE_NORMAL;

	private DocumentsAdapter mAdapter;
	private LoaderCallbacks<List<Document>> mCallbacks;

	private static final String EXTRA_URI = "uri";

	private static final int LOADER_DOCUMENTS = 2;

	public static void show(FragmentManager fm, Uri uri) {
	final Bundle args = new Bundle();
	args.putParcelable(EXTRA_URI, uri);

	final DirectoryFragment fragment = new DirectoryFragment();
	fragment.setArguments(args);

	final FragmentTransaction ft = fm.beginTransaction();
	ft.replace(R.id.container_directory, fragment);
	ft.commitAllowingStateLoss();
	}

	public static DirectoryFragment get(FragmentManager fm) {
	// TODO: deal with multiple directories shown at once
	return (DirectoryFragment) fm.findFragmentById(R.id.container_directory);
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setHasOptionsMenu(true);
	}

	@Override
	public View onCreateView(
	LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
	final Context context = inflater.getContext();

	final View view = inflater.inflate(R.layout.fragment_directory, container, false);

	mListView = (ListView) view.findViewById(R.id.list);
	mListView.setOnItemClickListener(mItemListener);
	mListView.setMultiChoiceModeListener(mMultiListener);

	mGridView = (GridView) view.findViewById(R.id.grid);
	mGridView.setOnItemClickListener(mItemListener);
	mGridView.setMultiChoiceModeListener(mMultiListener);

	mAdapter = new DocumentsAdapter();
	updateMode();

	final Uri uri = getArguments().getParcelable(EXTRA_URI);

	if (uri.getQueryParameter(DocumentsContract.PARAM_QUERY) != null) {
	mType = TYPE_SEARCH;
	} else if (RecentsProvider.buildRecentOpen().equals(uri)) {
	mType = TYPE_RECENT_OPEN;
	} else if (RecentsProvider.buildRecentCreate().equals(uri)) {
	mType = TYPE_RECENT_CREATE;
	} else {
	mType = TYPE_NORMAL;
	}

	mCallbacks = new LoaderCallbacks<List<Document>>() {
	@Override
	public Loader<List<Document>> onCreateLoader(int id, Bundle args) {
	final DisplayState state = getDisplayState(DirectoryFragment.this);

	final Uri contentsUri;
	if (mType == TYPE_NORMAL) {
	contentsUri = DocumentsContract.buildContentsUri(uri);
	} else {
	contentsUri = uri;
	}

	final Predicate<Document> filter = new MimePredicate(state.acceptMimes);

	final Comparator<Document> sortOrder;
	if (state.sortOrder == DisplayState.SORT_ORDER_DATE \|\| mType == TYPE_RECENT_OPEN
	\|\| mType == TYPE_RECENT_CREATE) {
	sortOrder = new Document.DateComparator();
	} else if (state.sortOrder == DisplayState.SORT_ORDER_NAME) {
	sortOrder = new Document.NameComparator();
	} else {
	throw new IllegalArgumentException("Unknown sort order " + state.sortOrder);
	}

	return new DirectoryLoader(context, contentsUri, mType, filter, sortOrder);
	}

	@Override
	public void onLoadFinished(Loader<List<Document>> loader, List<Document> data) {
	mAdapter.swapDocuments(data);
	}

	@Override
	public void onLoaderReset(Loader<List<Document>> loader) {
	mAdapter.swapDocuments(null);
	}
	};

	return view;
	}

	@Override
	public void onStart() {
	super.onStart();
	getLoaderManager().restartLoader(LOADER_DOCUMENTS, getArguments(), mCallbacks);
	}

	@Override
	public void onStop() {
	super.onStop();
	getLoaderManager().destroyLoader(LOADER_DOCUMENTS);
	}

	@Override
	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
	super.onCreateOptionsMenu(menu, inflater);
	inflater.inflate(R.menu.directory, menu);
	}

	@Override
	public void onPrepareOptionsMenu(Menu menu) {
	super.onPrepareOptionsMenu(menu);
	final DisplayState state = getDisplayState(this);
	menu.findItem(R.id.menu_grid).setVisible(state.mode != DisplayState.MODE_GRID);
	menu.findItem(R.id.menu_list).setVisible(state.mode != DisplayState.MODE_LIST);
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	final DisplayState state = getDisplayState(this);
	final int id = item.getItemId();
	if (id == R.id.menu_grid) {
	state.mode = DisplayState.MODE_GRID;
	updateMode();
	getFragmentManager().invalidateOptionsMenu();
	return true;
	} else if (id == R.id.menu_list) {
	state.mode = DisplayState.MODE_LIST;
	updateMode();
	getFragmentManager().invalidateOptionsMenu();
	return true;
	} else {
	return super.onOptionsItemSelected(item);
	}
	}

	private void updateMode() {
	final DisplayState state = getDisplayState(this);

	mListView.setVisibility(state.mode == DisplayState.MODE_LIST ? View.VISIBLE : View.GONE);
	mGridView.setVisibility(state.mode == DisplayState.MODE_GRID ? View.VISIBLE : View.GONE);

	final int choiceMode;
	if (state.allowMultiple) {
	choiceMode = ListView.CHOICE_MODE_MULTIPLE_MODAL;
	} else {
	choiceMode = ListView.CHOICE_MODE_NONE;
	}

	if (state.mode == DisplayState.MODE_GRID) {
	mListView.setAdapter(null);
	mListView.setChoiceMode(ListView.CHOICE_MODE_NONE);
	mGridView.setAdapter(mAdapter);
	mGridView.setColumnWidth(getResources().getDimensionPixelSize(R.dimen.grid_width));
	mGridView.setNumColumns(GridView.AUTO_FIT);
	mGridView.setChoiceMode(choiceMode);
	mCurrentView = mGridView;
	} else if (state.mode == DisplayState.MODE_LIST) {
	mGridView.setAdapter(null);
	mGridView.setChoiceMode(ListView.CHOICE_MODE_NONE);
	mListView.setAdapter(mAdapter);
	mListView.setChoiceMode(choiceMode);
	mCurrentView = mListView;
	} else {
	throw new IllegalStateException();
	}
	}

	public void updateSortOrder() {
	getLoaderManager().restartLoader(LOADER_DOCUMENTS, getArguments(), mCallbacks);
	mListView.smoothScrollToPosition(0);
	mGridView.smoothScrollToPosition(0);
	}

	private OnItemClickListener mItemListener = new OnItemClickListener() {
	@Override
	public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
	final Document doc = mAdapter.getItem(position);
	((DocumentsActivity) getActivity()).onDocumentPicked(doc);
	}
	};

	private MultiChoiceModeListener mMultiListener = new MultiChoiceModeListener() {
	@Override
	public boolean onCreateActionMode(ActionMode mode, Menu menu) {
	mode.getMenuInflater().inflate(R.menu.mode_directory, menu);
	return true;
	}

	@Override
	public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
	return true;
	}

	@Override
	public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
	if (item.getItemId() == R.id.menu_open) {
	final Uri uri = getArguments().getParcelable(EXTRA_URI);
	final SparseBooleanArray checked = mCurrentView.getCheckedItemPositions();
	final ArrayList<Document> docs = Lists.newArrayList();

	final int size = checked.size();
	for (int i = 0; i < size; i++) {
	if (checked.valueAt(i)) {
	final Document doc = mAdapter.getItem(checked.keyAt(i));
	docs.add(doc);
	}
	}

	((DocumentsActivity) getActivity()).onDocumentsPicked(docs);
	return true;
	} else {
	return false;
	}
	}

	@Override
	public void onDestroyActionMode(ActionMode mode) {
	// ignored
	}

	@Override
	public void onItemCheckedStateChanged(
	ActionMode mode, int position, long id, boolean checked) {
	if (checked) {
	// Directories cannot be checked
	final Document doc = mAdapter.getItem(position);
	if (DocumentsContract.MIME_TYPE_DIRECTORY.equals(doc.mimeType)) {
	mCurrentView.setItemChecked(position, false);
	}
	}

	mode.setTitle(getResources()
	.getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount()));
	}
	};

	private static DisplayState getDisplayState(Fragment fragment) {
	return ((DocumentsActivity) fragment.getActivity()).getDisplayState();
	}

	private class DocumentsAdapter extends BaseAdapter {
	private List<Document> mDocuments;

	public DocumentsAdapter() {
	}

	public void swapDocuments(List<Document> documents) {
	mDocuments = documents;
	notifyDataSetChanged();
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
	final Context context = parent.getContext();

	if (convertView == null) {
	final LayoutInflater inflater = LayoutInflater.from(context);
	final DisplayState state = getDisplayState(DirectoryFragment.this);
	if (state.mode == DisplayState.MODE_LIST) {
	convertView = inflater.inflate(R.layout.item_doc_list, parent, false);
	} else if (state.mode == DisplayState.MODE_GRID) {
	convertView = inflater.inflate(R.layout.item_doc_grid, parent, false);
	} else {
	throw new IllegalStateException();
	}
	}

	final Document doc = getItem(position);

	final TextView title = (TextView) convertView.findViewById(android.R.id.title);
	final TextView summary = (TextView) convertView.findViewById(android.R.id.summary);
	final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon);

	if (doc.isThumbnailSupported()) {
	// TODO: load thumbnails async
	icon.setImageURI(doc.uri);
	} else {
	icon.setImageDrawable(RootsCache.resolveDocumentIcon(
	context, doc.uri.getAuthority(), doc.mimeType));
	}

	title.setText(doc.displayName);
	if (summary != null) {
	summary.setText(DateUtils.getRelativeTimeSpanString(doc.lastModified));
	}

	return convertView;
	}

	@Override
	public int getCount() {
	return mDocuments != null ? mDocuments.size() : 0;
	}

	@Override
	public Document getItem(int position) {
	return mDocuments.get(position);
	}

	@Override
	public long getItemId(int position) {
	return getItem(position).uri.hashCode();
	}
	}
	}