/*
* 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 static com.android.documentsui.DocumentsActivity.TAG;
import static com.android.documentsui.DocumentsActivity.State.ACTION_CREATE;
import static com.android.documentsui.DocumentsActivity.State.ACTION_MANAGE;
import static com.android.documentsui.DocumentsActivity.State.MODE_GRID;
import static com.android.documentsui.DocumentsActivity.State.MODE_LIST;
import static com.android.documentsui.DocumentsActivity.State.MODE_UNKNOWN;
import static com.android.documentsui.DocumentsActivity.State.SORT_ORDER_UNKNOWN;
import static com.android.documentsui.model.DocumentInfo.getCursorInt;
import static com.android.documentsui.model.DocumentInfo.getCursorLong;
import static com.android.documentsui.model.DocumentInfo.getCursorString;
import android.app.ActivityManager;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.ContentProviderClient;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.Loader;
import android.content.res.Resources;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.InsetDrawable;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.CancellationSignal;
import android.os.OperationCanceledException;
import android.os.Parcelable;
import android.provider.DocumentsContract;
import android.provider.DocumentsContract.Document;
import android.text.format.DateUtils;
import android.text.format.Formatter;
import android.text.format.Time;
import android.util.Log;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import android.view.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.MultiChoiceModeListener;
import android.widget.AbsListView.RecyclerListener;
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 android.widget.Toast;
import com.android.documentsui.DocumentsActivity.State;
import com.android.documentsui.ProviderExecutor.Preemptable;
import com.android.documentsui.RecentsProvider.StateColumns;
import com.android.documentsui.model.DocumentInfo;
import com.android.documentsui.model.RootInfo;
import com.google.android.collect.Lists;
import java.util.ArrayList;
import java.util.List;
/**
* Display the documents inside a single directory.
*/
public class DirectoryFragment extends Fragment {
private View mEmptyView;
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 ANIM_NONE = 1;
public static final int ANIM_SIDE = 2;
public static final int ANIM_DOWN = 3;
public static final int ANIM_UP = 4;
private int mType = TYPE_NORMAL;
private String mStateKey;
private int mLastMode = MODE_UNKNOWN;
private int mLastSortOrder = SORT_ORDER_UNKNOWN;
private boolean mLastShowSize = false;
private boolean mHideGridTitles = false;
private boolean mSvelteRecents;
private Point mThumbSize;
private DocumentsAdapter mAdapter;
private LoaderCallbacks<DirectoryResult> mCallbacks;
private static final String EXTRA_TYPE = "type";
private static final String EXTRA_ROOT = "root";
private static final String EXTRA_DOC = "doc";
private static final String EXTRA_QUERY = "query";
private static final String EXTRA_IGNORE_STATE = "ignoreState";
private final int mLoaderId = 42;
public static void showNormal(FragmentManager fm, RootInfo root, DocumentInfo doc, int anim) {
show(fm, TYPE_NORMAL, root, doc, null, anim);
}
public static void showSearch(FragmentManager fm, RootInfo root, String query, int anim) {
show(fm, TYPE_SEARCH, root, null, query, anim);
}
public static void showRecentsOpen(FragmentManager fm, int anim) {
show(fm, TYPE_RECENT_OPEN, null, null, null, anim);
}
private static void show(FragmentManager fm, int type, RootInfo root, DocumentInfo doc,
String query, int anim) {
final Bundle args = new Bundle();
args.putInt(EXTRA_TYPE, type);
args.putParcelable(EXTRA_ROOT, root);
args.putParcelable(EXTRA_DOC, doc);
args.putString(EXTRA_QUERY, query);
final FragmentTransaction ft = fm.beginTransaction();
switch (anim) {
case ANIM_SIDE:
args.putBoolean(EXTRA_IGNORE_STATE, true);
break;
case ANIM_DOWN:
args.putBoolean(EXTRA_IGNORE_STATE, true);
ft.setCustomAnimations(R.animator.dir_down, R.animator.dir_frozen);
break;
case ANIM_UP:
ft.setCustomAnimations(R.animator.dir_frozen, R.animator.dir_up);
break;
}
final DirectoryFragment fragment = new DirectoryFragment();
fragment.setArguments(args);
ft.replace(R.id.container_directory, fragment);
ft.commitAllowingStateLoss();
}
private static String buildStateKey(RootInfo root, DocumentInfo doc) {
final StringBuilder builder = new StringBuilder();
builder.append(root != null ? root.authority : "null").append(';');
builder.append(root != null ? root.rootId : "null").append(';');
builder.append(doc != null ? doc.documentId : "null");
return builder.toString();
}
public static DirectoryFragment get(FragmentManager fm) {
// TODO: deal with multiple directories shown at once
return (DirectoryFragment) fm.findFragmentById(R.id.container_directory);
}
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final Context context = inflater.getContext();
final Resources res = context.getResources();
final View view = inflater.inflate(R.layout.fragment_directory, container, false);
mEmptyView = view.findViewById(android.R.id.empty);
mListView = (ListView) view.findViewById(R.id.list);
mListView.setOnItemClickListener(mItemListener);
mListView.setMultiChoiceModeListener(mMultiListener);
mListView.setRecyclerListener(mRecycleListener);
// Indent our list divider to align with text
final Drawable divider = mListView.getDivider();
final boolean insetLeft = res.getBoolean(R.bool.list_divider_inset_left);
final int insetSize = res.getDimensionPixelSize(R.dimen.list_divider_inset);
if (insetLeft) {
mListView.setDivider(new InsetDrawable(divider, insetSize, 0, 0, 0));
} else {
mListView.setDivider(new InsetDrawable(divider, 0, 0, insetSize, 0));
}
mGridView = (GridView) view.findViewById(R.id.grid);
mGridView.setOnItemClickListener(mItemListener);
mGridView.setMultiChoiceModeListener(mMultiListener);
mGridView.setRecyclerListener(mRecycleListener);
return view;
}
@Override
public void onDestroyView() {
super.onDestroyView();
// Cancel any outstanding thumbnail requests
final ViewGroup target = (mListView.getAdapter() != null) ? mListView : mGridView;
final int count = target.getChildCount();
for (int i = 0; i < count; i++) {
final View view = target.getChildAt(i);
mRecycleListener.onMovedToScrapHeap(view);
}
// Tear down any selection in progress
mListView.setChoiceMode(AbsListView.CHOICE_MODE_NONE);
mGridView.setChoiceMode(AbsListView.CHOICE_MODE_NONE);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final Context context = getActivity();
final State state = getDisplayState(DirectoryFragment.this);
final RootInfo root = getArguments().getParcelable(EXTRA_ROOT);
final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC);
mAdapter = new DocumentsAdapter();
mType = getArguments().getInt(EXTRA_TYPE);
mStateKey = buildStateKey(root, doc);
if (mType == TYPE_RECENT_OPEN) {
// Hide titles when showing recents for picking images/videos
mHideGridTitles = MimePredicate.mimeMatches(
MimePredicate.VISUAL_MIMES, state.acceptMimes);
} else {
mHideGridTitles = (doc != null) && doc.isGridTitlesHidden();
}
final ActivityManager am = (ActivityManager) context.getSystemService(
Context.ACTIVITY_SERVICE);
mSvelteRecents = am.isLowRamDevice() && (mType == TYPE_RECENT_OPEN);
mCallbacks = new LoaderCallbacks<DirectoryResult>() {
@Override
public Loader<DirectoryResult> onCreateLoader(int id, Bundle args) {
final String query = getArguments().getString(EXTRA_QUERY);
Uri contentsUri;
switch (mType) {
case TYPE_NORMAL:
contentsUri = DocumentsContract.buildChildDocumentsUri(
doc.authority, doc.documentId);
if (state.action == ACTION_MANAGE) {
contentsUri = DocumentsContract.setManageMode(contentsUri);
}
return new DirectoryLoader(
context, mType, root, doc, contentsUri, state.userSortOrder);
case TYPE_SEARCH:
contentsUri = DocumentsContract.buildSearchDocumentsUri(
root.authority, root.rootId, query);
if (state.action == ACTION_MANAGE) {
contentsUri = DocumentsContract.setManageMode(contentsUri);
}
return new DirectoryLoader(
context, mType, root, doc, contentsUri, state.userSortOrder);
case TYPE_RECENT_OPEN:
final RootsCache roots = DocumentsApplication.getRootsCache(context);
return new RecentLoader(context, roots, state);
default:
throw new IllegalStateException("Unknown type " + mType);
}
}
@Override
public void onLoadFinished(Loader<DirectoryResult> loader, DirectoryResult result) {
if (!isAdded()) return;
mAdapter.swapResult(result);
// Push latest state up to UI
// TODO: if mode change was racing with us, don't overwrite it
if (result.mode != MODE_UNKNOWN) {
state.derivedMode = result.mode;
}
state.derivedSortOrder = result.sortOrder;
((DocumentsActivity) context).onStateChanged();
updateDisplayState();
// When launched into empty recents, show drawer
if (mType == TYPE_RECENT_OPEN && mAdapter.isEmpty() && !state.stackTouched) {
((DocumentsActivity) context).setRootsDrawerOpen(true);
}
// Restore any previous instance state
final SparseArray<Parcelable> container = state.dirState.remove(mStateKey);
if (container != null && !getArguments().getBoolean(EXTRA_IGNORE_STATE, false)) {
getView().restoreHierarchyState(container);
} else if (mLastSortOrder != state.derivedSortOrder) {
mListView.smoothScrollToPosition(0);
mGridView.smoothScrollToPosition(0);
}
mLastSortOrder = state.derivedSortOrder;
}
@Override
public void onLoaderReset(Loader<DirectoryResult> loader) {
mAdapter.swapResult(null);
}
};
// Kick off loader at least once
getLoaderManager().restartLoader(mLoaderId, null, mCallbacks);
updateDisplayState();
}
@Override
public void onStop() {
super.onStop();
// Remember last scroll location
final SparseArray<Parcelable> container = new SparseArray<Parcelable>();
getView().saveHierarchyState(container);
final State state = getDisplayState(this);
state.dirState.put(mStateKey, container);
}
@Override
public void onResume() {
super.onResume();
updateDisplayState();
}
public void onDisplayStateChanged() {
updateDisplayState();
}
public void onUserSortOrderChanged() {
// Sort order change always triggers reload; we'll trigger state change
// on the flip side.
getLoaderManager().restartLoader(mLoaderId, null, mCallbacks);
}
public void onUserModeChanged() {
final ContentResolver resolver = getActivity().getContentResolver();
final State state = getDisplayState(this);
final RootInfo root = getArguments().getParcelable(EXTRA_ROOT);
final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC);
if (root != null && doc != null) {
final Uri stateUri = RecentsProvider.buildState(
root.authority, root.rootId, doc.documentId);
final ContentValues values = new ContentValues();
values.put(StateColumns.MODE, state.userMode);
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
resolver.insert(stateUri, values);
return null;
}
}.execute();
}
// Mode change is just visual change; no need to kick loader, and
// deliver change event immediately.
state.derivedMode = state.userMode;
((DocumentsActivity) getActivity()).onStateChanged();
updateDisplayState();
}
private void updateDisplayState() {
final State state = getDisplayState(this);
if (mLastMode == state.derivedMode && mLastShowSize == state.showSize) return;
mLastMode = state.derivedMode;
mLastShowSize = state.showSize;
mListView.setVisibility(state.derivedMode == MODE_LIST ? View.VISIBLE : View.GONE);
mGridView.setVisibility(state.derivedMode == MODE_GRID ? View.VISIBLE : View.GONE);
final int choiceMode;
if (state.allowMultiple) {
choiceMode = ListView.CHOICE_MODE_MULTIPLE_MODAL;
} else {
choiceMode = ListView.CHOICE_MODE_NONE;
}
final int thumbSize;
if (state.derivedMode == MODE_GRID) {
thumbSize = getResources().getDimensionPixelSize(R.dimen.grid_width);
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.derivedMode == MODE_LIST) {
thumbSize = getResources().getDimensionPixelSize(R.dimen.icon_size);
mGridView.setAdapter(null);
mGridView.setChoiceMode(ListView.CHOICE_MODE_NONE);
mListView.setAdapter(mAdapter);
mListView.setChoiceMode(choiceMode);
mCurrentView = mListView;
} else {
throw new IllegalStateException("Unknown state " + state.derivedMode);
}
mThumbSize = new Point(thumbSize, thumbSize);
}
private OnItemClickListener mItemListener = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
final Cursor cursor = mAdapter.getItem(position);
if (cursor != null) {
final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE);
final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS);
if (isDocumentEnabled(docMimeType, docFlags)) {
final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor);
((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);
mode.setTitle(getResources()
.getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount()));
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
final State state = getDisplayState(DirectoryFragment.this);
final MenuItem open = menu.findItem(R.id.menu_open);
final MenuItem share = menu.findItem(R.id.menu_share);
final MenuItem delete = menu.findItem(R.id.menu_delete);
final boolean manageMode = state.action == ACTION_MANAGE;
open.setVisible(!manageMode);
share.setVisible(manageMode);
delete.setVisible(manageMode);
return true;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
final SparseBooleanArray checked = mCurrentView.getCheckedItemPositions();
final ArrayList<DocumentInfo> docs = Lists.newArrayList();
final int size = checked.size();
for (int i = 0; i < size; i++) {
if (checked.valueAt(i)) {
final Cursor cursor = mAdapter.getItem(checked.keyAt(i));
final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor);
docs.add(doc);
}
}
final int id = item.getItemId();
if (id == R.id.menu_open) {
DocumentsActivity.get(DirectoryFragment.this).onDocumentsPicked(docs);
mode.finish();
return true;
} else if (id == R.id.menu_share) {
onShareDocuments(docs);
mode.finish();
return true;
} else if (id == R.id.menu_delete) {
onDeleteDocuments(docs);
mode.finish();
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 and footer items cannot be checked
boolean valid = false;
final Cursor cursor = mAdapter.getItem(position);
if (cursor != null) {
final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE);
final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS);
if (!Document.MIME_TYPE_DIR.equals(docMimeType)) {
valid = isDocumentEnabled(docMimeType, docFlags);
}
}
if (!valid) {
mCurrentView.setItemChecked(position, false);
}
}
mode.setTitle(getResources()
.getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount()));
}
};
private RecyclerListener mRecycleListener = new RecyclerListener() {
@Override
public void onMovedToScrapHeap(View view) {
final ImageView iconThumb = (ImageView) view.findViewById(R.id.icon_thumb);
if (iconThumb != null) {
final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag();
if (oldTask != null) {
oldTask.preempt();
iconThumb.setTag(null);
}
}
}
};
private void onShareDocuments(List<DocumentInfo> docs) {
Intent intent;
if (docs.size() == 1) {
final DocumentInfo doc = docs.get(0);
intent = new Intent(Intent.ACTION_SEND);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setType(doc.mimeType);
intent.putExtra(Intent.EXTRA_STREAM, doc.derivedUri);
} else if (docs.size() > 1) {
intent = new Intent(Intent.ACTION_SEND_MULTIPLE);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addCategory(Intent.CATEGORY_DEFAULT);
final ArrayList<String> mimeTypes = Lists.newArrayList();
final ArrayList<Uri> uris = Lists.newArrayList();
for (DocumentInfo doc : docs) {
mimeTypes.add(doc.mimeType);
uris.add(doc.derivedUri);
}
intent.setType(findCommonMimeType(mimeTypes));
intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris);
} else {
return;
}
intent = Intent.createChooser(intent, getActivity().getText(R.string.share_via));
startActivity(intent);
}
private void onDeleteDocuments(List<DocumentInfo> docs) {
final Context context = getActivity();
final ContentResolver resolver = context.getContentResolver();
boolean hadTrouble = false;
for (DocumentInfo doc : docs) {
if (!doc.isDeleteSupported()) {
Log.w(TAG, "Skipping " + doc);
hadTrouble = true;
continue;
}
ContentProviderClient client = null;
try {
client = DocumentsApplication.acquireUnstableProviderOrThrow(
resolver, doc.derivedUri.getAuthority());
DocumentsContract.deleteDocument(client, doc.derivedUri);
} catch (Exception e) {
Log.w(TAG, "Failed to delete " + doc);
hadTrouble = true;
} finally {
ContentProviderClient.releaseQuietly(client);
}
}
if (hadTrouble) {
Toast.makeText(context, R.string.toast_failed_delete, Toast.LENGTH_SHORT).show();
}
}
private static State getDisplayState(Fragment fragment) {
return ((DocumentsActivity) fragment.getActivity()).getDisplayState();
}
private static abstract class Footer {
private final int mItemViewType;
public Footer(int itemViewType) {
mItemViewType = itemViewType;
}
public abstract View getView(View convertView, ViewGroup parent);
public int getItemViewType() {
return mItemViewType;
}
}
private class LoadingFooter extends Footer {
public LoadingFooter() {
super(1);
}
@Override
public View getView(View convertView, ViewGroup parent) {
final Context context = parent.getContext();
final State state = getDisplayState(DirectoryFragment.this);
if (convertView == null) {
final LayoutInflater inflater = LayoutInflater.from(context);
if (state.derivedMode == MODE_LIST) {
convertView = inflater.inflate(R.layout.item_loading_list, parent, false);
} else if (state.derivedMode == MODE_GRID) {
convertView = inflater.inflate(R.layout.item_loading_grid, parent, false);
} else {
throw new IllegalStateException();
}
}
return convertView;
}
}
private class MessageFooter extends Footer {
private final int mIcon;
private final String mMessage;
public MessageFooter(int itemViewType, int icon, String message) {
super(itemViewType);
mIcon = icon;
mMessage = message;
}
@Override
public View getView(View convertView, ViewGroup parent) {
final Context context = parent.getContext();
final State state = getDisplayState(DirectoryFragment.this);
if (convertView == null) {
final LayoutInflater inflater = LayoutInflater.from(context);
if (state.derivedMode == MODE_LIST) {
convertView = inflater.inflate(R.layout.item_message_list, parent, false);
} else if (state.derivedMode == MODE_GRID) {
convertView = inflater.inflate(R.layout.item_message_grid, parent, false);
} else {
throw new IllegalStateException();
}
}
final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon);
final TextView title = (TextView) convertView.findViewById(android.R.id.title);
icon.setImageResource(mIcon);
title.setText(mMessage);
return convertView;
}
}
private class DocumentsAdapter extends BaseAdapter {
private Cursor mCursor;
private int mCursorCount;
private List<Footer> mFooters = Lists.newArrayList();
public void swapResult(DirectoryResult result) {
mCursor = result != null ? result.cursor : null;
mCursorCount = mCursor != null ? mCursor.getCount() : 0;
mFooters.clear();
final Bundle extras = mCursor != null ? mCursor.getExtras() : null;
if (extras != null) {
final String info = extras.getString(DocumentsContract.EXTRA_INFO);
if (info != null) {
mFooters.add(new MessageFooter(2, R.drawable.ic_dialog_info, info));
}
final String error = extras.getString(DocumentsContract.EXTRA_ERROR);
if (error != null) {
mFooters.add(new MessageFooter(3, R.drawable.ic_dialog_alert, error));
}
if (extras.getBoolean(DocumentsContract.EXTRA_LOADING, false)) {
mFooters.add(new LoadingFooter());
}
}
if (result != null && result.exception != null) {
mFooters.add(new MessageFooter(
3, R.drawable.ic_dialog_alert, getString(R.string.query_error)));
}
if (isEmpty()) {
mEmptyView.setVisibility(View.VISIBLE);
} else {
mEmptyView.setVisibility(View.GONE);
}
notifyDataSetChanged();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (position < mCursorCount) {
return getDocumentView(position, convertView, parent);
} else {
position -= mCursorCount;
convertView = mFooters.get(position).getView(convertView, parent);
// Only the view itself is disabled; contents inside shouldn't
// be dimmed.
convertView.setEnabled(false);
return convertView;
}
}
private View getDocumentView(int position, View convertView, ViewGroup parent) {
final Context context = parent.getContext();
final State state = getDisplayState(DirectoryFragment.this);
final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC);
final RootsCache roots = DocumentsApplication.getRootsCache(context);
final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache(
context, mThumbSize);
if (convertView == null) {
final LayoutInflater inflater = LayoutInflater.from(context);
if (state.derivedMode == MODE_LIST) {
convertView = inflater.inflate(R.layout.item_doc_list, parent, false);
} else if (state.derivedMode == MODE_GRID) {
convertView = inflater.inflate(R.layout.item_doc_grid, parent, false);
} else {
throw new IllegalStateException();
}
}
final Cursor cursor = getItem(position);
final String docAuthority = getCursorString(cursor, RootCursorWrapper.COLUMN_AUTHORITY);
final String docRootId = getCursorString(cursor, RootCursorWrapper.COLUMN_ROOT_ID);
final String docId = getCursorString(cursor, Document.COLUMN_DOCUMENT_ID);
final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE);
final String docDisplayName = getCursorString(cursor, Document.COLUMN_DISPLAY_NAME);
final long docLastModified = getCursorLong(cursor, Document.COLUMN_LAST_MODIFIED);
final int docIcon = getCursorInt(cursor, Document.COLUMN_ICON);
final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS);
final String docSummary = getCursorString(cursor, Document.COLUMN_SUMMARY);
final long docSize = getCursorLong(cursor, Document.COLUMN_SIZE);
final View line1 = convertView.findViewById(R.id.line1);
final View line2 = convertView.findViewById(R.id.line2);
final ImageView iconMime = (ImageView) convertView.findViewById(R.id.icon_mime);
final ImageView iconThumb = (ImageView) convertView.findViewById(R.id.icon_thumb);
final TextView title = (TextView) convertView.findViewById(android.R.id.title);
final ImageView icon1 = (ImageView) convertView.findViewById(android.R.id.icon1);
final ImageView icon2 = (ImageView) convertView.findViewById(android.R.id.icon2);
final TextView summary = (TextView) convertView.findViewById(android.R.id.summary);
final TextView date = (TextView) convertView.findViewById(R.id.date);
final TextView size = (TextView) convertView.findViewById(R.id.size);
final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag();
if (oldTask != null) {
oldTask.preempt();
iconThumb.setTag(null);
}
iconMime.animate().cancel();
iconThumb.animate().cancel();
final boolean supportsThumbnail = (docFlags & Document.FLAG_SUPPORTS_THUMBNAIL) != 0;
final boolean allowThumbnail = (state.derivedMode == MODE_GRID)
|| MimePredicate.mimeMatches(MimePredicate.VISUAL_MIMES, docMimeType);
final boolean showThumbnail = supportsThumbnail && allowThumbnail && !mSvelteRecents;
final boolean enabled = isDocumentEnabled(docMimeType, docFlags);
final float iconAlpha = (state.derivedMode == MODE_LIST && !enabled) ? 0.5f : 1f;
boolean cacheHit = false;
if (showThumbnail) {
final Uri uri = DocumentsContract.buildDocumentUri(docAuthority, docId);
final Bitmap cachedResult = thumbs.get(uri);
if (cachedResult != null) {
iconThumb.setImageBitmap(cachedResult);
cacheHit = true;
} else {
iconThumb.setImageDrawable(null);
final ThumbnailAsyncTask task = new ThumbnailAsyncTask(
uri, iconMime, iconThumb, mThumbSize, iconAlpha);
iconThumb.setTag(task);
ProviderExecutor.forAuthority(docAuthority).execute(task);
}
}
// Always throw MIME icon into place, even when a thumbnail is being
// loaded in background.
if (cacheHit) {
iconMime.setAlpha(0f);
iconMime.setImageDrawable(null);
iconThumb.setAlpha(1f);
} else {
iconMime.setAlpha(1f);
iconThumb.setAlpha(0f);
iconThumb.setImageDrawable(null);
if (docIcon != 0) {
iconMime.setImageDrawable(
IconUtils.loadPackageIcon(context, docAuthority, docIcon));
} else {
iconMime.setImageDrawable(IconUtils.loadMimeIcon(
context, docMimeType, docAuthority, docId, state.derivedMode));
}
}
boolean hasLine1 = false;
boolean hasLine2 = false;
final boolean hideTitle = (state.derivedMode == MODE_GRID) && mHideGridTitles;
if (!hideTitle) {
title.setText(docDisplayName);
hasLine1 = true;
}
Drawable iconDrawable = null;
if (mType == TYPE_RECENT_OPEN) {
// We've already had to enumerate roots before any results can
// be shown, so this will never block.
final RootInfo root = roots.getRootBlocking(docAuthority, docRootId);
if (state.derivedMode == MODE_GRID) {
iconDrawable = root.loadGridIcon(context);
} else {
iconDrawable = root.loadIcon(context);
}
if (summary != null) {
final boolean alwaysShowSummary = getResources()
.getBoolean(R.bool.always_show_summary);
if (alwaysShowSummary) {
summary.setText(root.getDirectoryString());
summary.setVisibility(View.VISIBLE);
hasLine2 = true;
} else {
if (iconDrawable != null && roots.isIconUniqueBlocking(root)) {
// No summary needed if icon speaks for itself
summary.setVisibility(View.INVISIBLE);
} else {
summary.setText(root.getDirectoryString());
summary.setVisibility(View.VISIBLE);
summary.setTextAlignment(TextView.TEXT_ALIGNMENT_TEXT_END);
hasLine2 = true;
}
}
}
} else {
// Directories showing thumbnails in grid mode get a little icon
// hint to remind user they're a directory.
if (Document.MIME_TYPE_DIR.equals(docMimeType) && state.derivedMode == MODE_GRID
&& showThumbnail) {
iconDrawable = IconUtils.applyTintAttr(context, R.drawable.ic_doc_folder,
android.R.attr.textColorPrimaryInverse);
}
if (summary != null) {
if (docSummary != null) {
summary.setText(docSummary);
summary.setVisibility(View.VISIBLE);
hasLine2 = true;
} else {
summary.setVisibility(View.INVISIBLE);
}
}
}
if (icon1 != null) icon1.setVisibility(View.GONE);
if (icon2 != null) icon2.setVisibility(View.GONE);
if (iconDrawable != null) {
if (hasLine1) {
icon1.setVisibility(View.VISIBLE);
icon1.setImageDrawable(iconDrawable);
} else {
icon2.setVisibility(View.VISIBLE);
icon2.setImageDrawable(iconDrawable);
}
}
if (docLastModified == -1) {
date.setText(null);
} else {
date.setText(formatTime(context, docLastModified));
hasLine2 = true;
}
if (state.showSize) {
size.setVisibility(View.VISIBLE);
if (Document.MIME_TYPE_DIR.equals(docMimeType) || docSize == -1) {
size.setText(null);
} else {
size.setText(Formatter.formatFileSize(context, docSize));
hasLine2 = true;
}
} else {
size.setVisibility(View.GONE);
}
if (line1 != null) {
line1.setVisibility(hasLine1 ? View.VISIBLE : View.GONE);
}
if (line2 != null) {
line2.setVisibility(hasLine2 ? View.VISIBLE : View.GONE);
}
setEnabledRecursive(convertView, enabled);
iconMime.setAlpha(iconAlpha);
iconThumb.setAlpha(iconAlpha);
if (icon1 != null) icon1.setAlpha(iconAlpha);
if (icon2 != null) icon2.setAlpha(iconAlpha);
return convertView;
}
@Override
public int getCount() {
return mCursorCount + mFooters.size();
}
@Override
public Cursor getItem(int position) {
if (position < mCursorCount) {
mCursor.moveToPosition(position);
return mCursor;
} else {
return null;
}
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getViewTypeCount() {
return 4;
}
@Override
public int getItemViewType(int position) {
if (position < mCursorCount) {
return 0;
} else {
position -= mCursorCount;
return mFooters.get(position).getItemViewType();
}
}
}
private static class ThumbnailAsyncTask extends AsyncTask<Uri, Void, Bitmap>
implements Preemptable {
private final Uri mUri;
private final ImageView mIconMime;
private final ImageView mIconThumb;
private final Point mThumbSize;
private final float mTargetAlpha;
private final CancellationSignal mSignal;
public ThumbnailAsyncTask(Uri uri, ImageView iconMime, ImageView iconThumb, Point thumbSize,
float targetAlpha) {
mUri = uri;
mIconMime = iconMime;
mIconThumb = iconThumb;
mThumbSize = thumbSize;
mTargetAlpha = targetAlpha;
mSignal = new CancellationSignal();
}
@Override
public void preempt() {
cancel(false);
mSignal.cancel();
}
@Override
protected Bitmap doInBackground(Uri... params) {
if (isCancelled()) return null;
final Context context = mIconThumb.getContext();
final ContentResolver resolver = context.getContentResolver();
ContentProviderClient client = null;
Bitmap result = null;
try {
client = DocumentsApplication.acquireUnstableProviderOrThrow(
resolver, mUri.getAuthority());
result = DocumentsContract.getDocumentThumbnail(client, mUri, mThumbSize, mSignal);
if (result != null) {
final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache(
context, mThumbSize);
thumbs.put(mUri, result);
}
} catch (Exception e) {
if (!(e instanceof OperationCanceledException)) {
Log.w(TAG, "Failed to load thumbnail for " + mUri + ": " + e);
}
} finally {
ContentProviderClient.releaseQuietly(client);
}
return result;
}
@Override
protected void onPostExecute(Bitmap result) {
if (mIconThumb.getTag() == this && result != null) {
mIconThumb.setTag(null);
mIconThumb.setImageBitmap(result);
mIconMime.setAlpha(mTargetAlpha);
mIconMime.animate().alpha(0f).start();
mIconThumb.setAlpha(0f);
mIconThumb.animate().alpha(mTargetAlpha).start();
}
}
}
private static String formatTime(Context context, long when) {
// TODO: DateUtils should make this easier
Time then = new Time();
then.set(when);
Time now = new Time();
now.setToNow();
int flags = DateUtils.FORMAT_NO_NOON | DateUtils.FORMAT_NO_MIDNIGHT
| DateUtils.FORMAT_ABBREV_ALL;
if (then.year != now.year) {
flags |= DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE;
} else if (then.yearDay != now.yearDay) {
flags |= DateUtils.FORMAT_SHOW_DATE;
} else {
flags |= DateUtils.FORMAT_SHOW_TIME;
}
return DateUtils.formatDateTime(context, when, flags);
}
private String findCommonMimeType(List<String> mimeTypes) {
String[] commonType = mimeTypes.get(0).split("/");
if (commonType.length != 2) {
return "*/*";
}
for (int i = 1; i < mimeTypes.size(); i++) {
String[] type = mimeTypes.get(i).split("/");
if (type.length != 2) continue;
if (!commonType[1].equals(type[1])) {
commonType[1] = "*";
}
if (!commonType[0].equals(type[0])) {
commonType[0] = "*";
commonType[1] = "*";
break;
}
}
return commonType[0] + "/" + commonType[1];
}
private void setEnabledRecursive(View v, boolean enabled) {
if (v == null) return;
if (v.isEnabled() == enabled) return;
v.setEnabled(enabled);
if (v instanceof ViewGroup) {
final ViewGroup vg = (ViewGroup) v;
for (int i = vg.getChildCount() - 1; i >= 0; i--) {
setEnabledRecursive(vg.getChildAt(i), enabled);
}
}
}
private boolean isDocumentEnabled(String docMimeType, int docFlags) {
final State state = getDisplayState(DirectoryFragment.this);
// Directories are always enabled
if (Document.MIME_TYPE_DIR.equals(docMimeType)) {
return true;
}
// Read-only files are disabled when creating
if (state.action == ACTION_CREATE && (docFlags & Document.FLAG_SUPPORTS_WRITE) == 0) {
return false;
}
return MimePredicate.mimeMatches(state.acceptMimes, docMimeType);
}
}
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