DirectoryFragment.java revision 4ec973925fc2cd18f9ec0d0ca5af588564fded27
1/* 2 * Copyright (C) 2013 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.documentsui; 18 19import static com.android.documentsui.DocumentsActivity.TAG; 20import static com.android.documentsui.DocumentsActivity.State.ACTION_MANAGE; 21import static com.android.documentsui.DocumentsActivity.State.MODE_GRID; 22import static com.android.documentsui.DocumentsActivity.State.MODE_LIST; 23import static com.android.documentsui.DocumentsActivity.State.MODE_UNKNOWN; 24import static com.android.documentsui.DocumentsActivity.State.SORT_ORDER_UNKNOWN; 25import static com.android.documentsui.model.DocumentInfo.getCursorInt; 26import static com.android.documentsui.model.DocumentInfo.getCursorLong; 27import static com.android.documentsui.model.DocumentInfo.getCursorString; 28 29import android.app.Fragment; 30import android.app.FragmentManager; 31import android.app.FragmentTransaction; 32import android.app.LoaderManager.LoaderCallbacks; 33import android.content.ContentResolver; 34import android.content.ContentValues; 35import android.content.Context; 36import android.content.Intent; 37import android.content.Loader; 38import android.database.Cursor; 39import android.graphics.Bitmap; 40import android.graphics.Point; 41import android.graphics.drawable.Drawable; 42import android.net.Uri; 43import android.os.AsyncTask; 44import android.os.Bundle; 45import android.os.CancellationSignal; 46import android.provider.DocumentsContract; 47import android.provider.DocumentsContract.Document; 48import android.text.format.DateUtils; 49import android.text.format.Formatter; 50import android.text.format.Time; 51import android.util.Log; 52import android.util.SparseBooleanArray; 53import android.view.ActionMode; 54import android.view.LayoutInflater; 55import android.view.Menu; 56import android.view.MenuItem; 57import android.view.View; 58import android.view.ViewGroup; 59import android.widget.AbsListView; 60import android.widget.AbsListView.MultiChoiceModeListener; 61import android.widget.AbsListView.RecyclerListener; 62import android.widget.AdapterView; 63import android.widget.AdapterView.OnItemClickListener; 64import android.widget.BaseAdapter; 65import android.widget.GridView; 66import android.widget.ImageView; 67import android.widget.ListView; 68import android.widget.TextView; 69import android.widget.Toast; 70 71import com.android.documentsui.DocumentsActivity.State; 72import com.android.documentsui.RecentsProvider.StateColumns; 73import com.android.documentsui.model.DocumentInfo; 74import com.android.documentsui.model.RootInfo; 75import com.android.internal.util.Predicate; 76import com.google.android.collect.Lists; 77 78import java.util.ArrayList; 79import java.util.List; 80import java.util.concurrent.atomic.AtomicInteger; 81 82/** 83 * Display the documents inside a single directory. 84 */ 85public class DirectoryFragment extends Fragment { 86 87 private View mEmptyView; 88 private ListView mListView; 89 private GridView mGridView; 90 91 private AbsListView mCurrentView; 92 93 private Predicate<DocumentInfo> mFilter; 94 95 public static final int TYPE_NORMAL = 1; 96 public static final int TYPE_SEARCH = 2; 97 public static final int TYPE_RECENT_OPEN = 3; 98 99 private int mType = TYPE_NORMAL; 100 101 private int mLastMode = MODE_UNKNOWN; 102 private int mLastSortOrder = SORT_ORDER_UNKNOWN; 103 104 private Point mThumbSize; 105 106 private DocumentsAdapter mAdapter; 107 private LoaderCallbacks<DirectoryResult> mCallbacks; 108 109 private static final String EXTRA_TYPE = "type"; 110 private static final String EXTRA_ROOT = "root"; 111 private static final String EXTRA_DOC = "doc"; 112 private static final String EXTRA_QUERY = "query"; 113 114 /** 115 * MIME types that should always show thumbnails in list mode. 116 */ 117 private static final String[] LIST_THUMBNAIL_MIMES = new String[] { "image/*", "video/*" }; 118 119 private static AtomicInteger sLoaderId = new AtomicInteger(4000); 120 121 private final int mLoaderId = sLoaderId.incrementAndGet(); 122 123 public static void showNormal(FragmentManager fm, RootInfo root, DocumentInfo doc) { 124 show(fm, TYPE_NORMAL, root, doc, null); 125 } 126 127 public static void showSearch( 128 FragmentManager fm, RootInfo root, DocumentInfo doc, String query) { 129 show(fm, TYPE_SEARCH, root, doc, query); 130 } 131 132 public static void showRecentsOpen(FragmentManager fm) { 133 show(fm, TYPE_RECENT_OPEN, null, null, null); 134 } 135 136 private static void show( 137 FragmentManager fm, int type, RootInfo root, DocumentInfo doc, String query) { 138 final Bundle args = new Bundle(); 139 args.putInt(EXTRA_TYPE, type); 140 args.putParcelable(EXTRA_ROOT, root); 141 args.putParcelable(EXTRA_DOC, doc); 142 args.putString(EXTRA_QUERY, query); 143 144 final DirectoryFragment fragment = new DirectoryFragment(); 145 fragment.setArguments(args); 146 147 final FragmentTransaction ft = fm.beginTransaction(); 148 ft.replace(R.id.container_directory, fragment); 149 ft.commitAllowingStateLoss(); 150 } 151 152 public static DirectoryFragment get(FragmentManager fm) { 153 // TODO: deal with multiple directories shown at once 154 return (DirectoryFragment) fm.findFragmentById(R.id.container_directory); 155 } 156 157 @Override 158 public View onCreateView( 159 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 160 final Context context = inflater.getContext(); 161 final View view = inflater.inflate(R.layout.fragment_directory, container, false); 162 163 mEmptyView = view.findViewById(android.R.id.empty); 164 165 mListView = (ListView) view.findViewById(R.id.list); 166 mListView.setOnItemClickListener(mItemListener); 167 mListView.setMultiChoiceModeListener(mMultiListener); 168 mListView.setRecyclerListener(mRecycleListener); 169 170 mGridView = (GridView) view.findViewById(R.id.grid); 171 mGridView.setOnItemClickListener(mItemListener); 172 mGridView.setMultiChoiceModeListener(mMultiListener); 173 mGridView.setRecyclerListener(mRecycleListener); 174 175 return view; 176 } 177 178 @Override 179 public void onActivityCreated(Bundle savedInstanceState) { 180 super.onActivityCreated(savedInstanceState); 181 182 final Context context = getActivity(); 183 final State state = getDisplayState(DirectoryFragment.this); 184 185 mAdapter = new DocumentsAdapter(); 186 mType = getArguments().getInt(EXTRA_TYPE); 187 188 mCallbacks = new LoaderCallbacks<DirectoryResult>() { 189 @Override 190 public Loader<DirectoryResult> onCreateLoader(int id, Bundle args) { 191 final RootInfo root = getArguments().getParcelable(EXTRA_ROOT); 192 final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC); 193 final String query = getArguments().getString(EXTRA_QUERY); 194 195 Uri contentsUri; 196 switch (mType) { 197 case TYPE_NORMAL: 198 contentsUri = DocumentsContract.buildChildDocumentsUri( 199 doc.authority, doc.documentId); 200 if (state.action == ACTION_MANAGE) { 201 contentsUri = DocumentsContract.setManageMode(contentsUri); 202 } 203 return new DirectoryLoader( 204 context, mType, root, doc, contentsUri, state.userSortOrder); 205 case TYPE_SEARCH: 206 contentsUri = DocumentsContract.buildSearchDocumentsUri( 207 doc.authority, doc.documentId, query); 208 if (state.action == ACTION_MANAGE) { 209 contentsUri = DocumentsContract.setManageMode(contentsUri); 210 } 211 return new DirectoryLoader( 212 context, mType, root, doc, contentsUri, state.userSortOrder); 213 case TYPE_RECENT_OPEN: 214 final RootsCache roots = DocumentsApplication.getRootsCache(context); 215 final List<RootInfo> matchingRoots = roots.getMatchingRoots(state); 216 return new RecentLoader(context, matchingRoots, state.acceptMimes); 217 default: 218 throw new IllegalStateException("Unknown type " + mType); 219 } 220 } 221 222 @Override 223 public void onLoadFinished(Loader<DirectoryResult> loader, DirectoryResult result) { 224 if (!isAdded()) return; 225 226 mAdapter.swapCursor(result.cursor); 227 228 // Push latest state up to UI 229 // TODO: if mode change was racing with us, don't overwrite it 230 state.derivedMode = result.mode; 231 state.derivedSortOrder = result.sortOrder; 232 ((DocumentsActivity) context).onStateChanged(); 233 234 updateDisplayState(); 235 236 if (mLastSortOrder != state.derivedSortOrder) { 237 mLastSortOrder = state.derivedSortOrder; 238 mListView.smoothScrollToPosition(0); 239 mGridView.smoothScrollToPosition(0); 240 } 241 } 242 243 @Override 244 public void onLoaderReset(Loader<DirectoryResult> loader) { 245 mAdapter.swapCursor(null); 246 } 247 }; 248 249 // Kick off loader at least once 250 getLoaderManager().restartLoader(mLoaderId, null, mCallbacks); 251 252 updateDisplayState(); 253 } 254 255 @Override 256 public void onStart() { 257 super.onStart(); 258 updateDisplayState(); 259 } 260 261 public void onUserSortOrderChanged() { 262 // Sort order change always triggers reload; we'll trigger state change 263 // on the flip side. 264 getLoaderManager().restartLoader(mLoaderId, null, mCallbacks); 265 } 266 267 public void onUserModeChanged() { 268 final ContentResolver resolver = getActivity().getContentResolver(); 269 final State state = getDisplayState(this); 270 271 final RootInfo root = getArguments().getParcelable(EXTRA_ROOT); 272 final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC); 273 274 final Uri stateUri = RecentsProvider.buildState( 275 root.authority, root.rootId, doc.documentId); 276 final ContentValues values = new ContentValues(); 277 values.put(StateColumns.MODE, state.userMode); 278 279 new AsyncTask<Void, Void, Void>() { 280 @Override 281 protected Void doInBackground(Void... params) { 282 resolver.insert(stateUri, values); 283 return null; 284 } 285 }.execute(); 286 287 // Mode change is just visual change; no need to kick loader, and 288 // deliver change event immediately. 289 state.derivedMode = state.userMode; 290 ((DocumentsActivity) getActivity()).onStateChanged(); 291 292 updateDisplayState(); 293 } 294 295 private void updateDisplayState() { 296 final State state = getDisplayState(this); 297 298 mFilter = new MimePredicate(state.acceptMimes); 299 300 if (mLastMode == state.derivedMode) return; 301 mLastMode = state.derivedMode; 302 303 mListView.setVisibility(state.derivedMode == MODE_LIST ? View.VISIBLE : View.GONE); 304 mGridView.setVisibility(state.derivedMode == MODE_GRID ? View.VISIBLE : View.GONE); 305 306 final int choiceMode; 307 if (state.allowMultiple) { 308 choiceMode = ListView.CHOICE_MODE_MULTIPLE_MODAL; 309 } else { 310 choiceMode = ListView.CHOICE_MODE_NONE; 311 } 312 313 final int thumbSize; 314 if (state.derivedMode == MODE_GRID) { 315 thumbSize = getResources().getDimensionPixelSize(R.dimen.grid_width); 316 mListView.setAdapter(null); 317 mListView.setChoiceMode(ListView.CHOICE_MODE_NONE); 318 mGridView.setAdapter(mAdapter); 319 mGridView.setColumnWidth(getResources().getDimensionPixelSize(R.dimen.grid_width)); 320 mGridView.setNumColumns(GridView.AUTO_FIT); 321 mGridView.setChoiceMode(choiceMode); 322 mCurrentView = mGridView; 323 } else if (state.derivedMode == MODE_LIST) { 324 thumbSize = getResources().getDimensionPixelSize(R.dimen.icon_size); 325 mGridView.setAdapter(null); 326 mGridView.setChoiceMode(ListView.CHOICE_MODE_NONE); 327 mListView.setAdapter(mAdapter); 328 mListView.setChoiceMode(choiceMode); 329 mCurrentView = mListView; 330 } else { 331 throw new IllegalStateException("Unknown state " + state.derivedMode); 332 } 333 334 mThumbSize = new Point(thumbSize, thumbSize); 335 } 336 337 private OnItemClickListener mItemListener = new OnItemClickListener() { 338 @Override 339 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 340 final Cursor cursor = mAdapter.getItem(position); 341 if (cursor != null) { 342 final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); 343 if (mFilter.apply(doc)) { 344 ((DocumentsActivity) getActivity()).onDocumentPicked(doc); 345 } 346 } 347 } 348 }; 349 350 private MultiChoiceModeListener mMultiListener = new MultiChoiceModeListener() { 351 @Override 352 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 353 mode.getMenuInflater().inflate(R.menu.mode_directory, menu); 354 return true; 355 } 356 357 @Override 358 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 359 final State state = getDisplayState(DirectoryFragment.this); 360 361 final MenuItem open = menu.findItem(R.id.menu_open); 362 final MenuItem share = menu.findItem(R.id.menu_share); 363 final MenuItem delete = menu.findItem(R.id.menu_delete); 364 365 final boolean manageMode = state.action == ACTION_MANAGE; 366 open.setVisible(!manageMode); 367 share.setVisible(manageMode); 368 delete.setVisible(manageMode); 369 370 return true; 371 } 372 373 @Override 374 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 375 final SparseBooleanArray checked = mCurrentView.getCheckedItemPositions(); 376 final ArrayList<DocumentInfo> docs = Lists.newArrayList(); 377 final int size = checked.size(); 378 for (int i = 0; i < size; i++) { 379 if (checked.valueAt(i)) { 380 final Cursor cursor = mAdapter.getItem(checked.keyAt(i)); 381 final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); 382 docs.add(doc); 383 } 384 } 385 386 final int id = item.getItemId(); 387 if (id == R.id.menu_open) { 388 DocumentsActivity.get(DirectoryFragment.this).onDocumentsPicked(docs); 389 mode.finish(); 390 return true; 391 392 } else if (id == R.id.menu_share) { 393 onShareDocuments(docs); 394 mode.finish(); 395 return true; 396 397 } else if (id == R.id.menu_delete) { 398 onDeleteDocuments(docs); 399 mode.finish(); 400 return true; 401 402 } else { 403 return false; 404 } 405 } 406 407 @Override 408 public void onDestroyActionMode(ActionMode mode) { 409 // ignored 410 } 411 412 @Override 413 public void onItemCheckedStateChanged( 414 ActionMode mode, int position, long id, boolean checked) { 415 if (checked) { 416 // Directories and footer items cannot be checked 417 boolean valid = false; 418 419 final Cursor cursor = mAdapter.getItem(position); 420 if (cursor != null) { 421 final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); 422 423 // Only valid if non-directory matches filter 424 final State state = getDisplayState(DirectoryFragment.this); 425 valid = !Document.MIME_TYPE_DIR.equals(docMimeType) 426 && MimePredicate.mimeMatches(state.acceptMimes, docMimeType); 427 } 428 429 if (!valid) { 430 mCurrentView.setItemChecked(position, false); 431 } 432 } 433 434 mode.setTitle(getResources() 435 .getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount())); 436 } 437 }; 438 439 private RecyclerListener mRecycleListener = new RecyclerListener() { 440 @Override 441 public void onMovedToScrapHeap(View view) { 442 final ImageView iconThumb = (ImageView) view.findViewById(R.id.icon_thumb); 443 if (iconThumb != null) { 444 final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag(); 445 if (oldTask != null) { 446 oldTask.reallyCancel(); 447 iconThumb.setTag(null); 448 } 449 } 450 } 451 }; 452 453 private void onShareDocuments(List<DocumentInfo> docs) { 454 Intent intent; 455 if (docs.size() == 1) { 456 final DocumentInfo doc = docs.get(0); 457 458 intent = new Intent(Intent.ACTION_SEND); 459 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); 460 intent.addCategory(Intent.CATEGORY_DEFAULT); 461 intent.setType(doc.mimeType); 462 intent.putExtra(Intent.EXTRA_STREAM, doc.derivedUri); 463 464 } else if (docs.size() > 1) { 465 intent = new Intent(Intent.ACTION_SEND_MULTIPLE); 466 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); 467 intent.addCategory(Intent.CATEGORY_DEFAULT); 468 469 final ArrayList<String> mimeTypes = Lists.newArrayList(); 470 final ArrayList<Uri> uris = Lists.newArrayList(); 471 for (DocumentInfo doc : docs) { 472 mimeTypes.add(doc.mimeType); 473 uris.add(doc.derivedUri); 474 } 475 476 intent.setType(findCommonMimeType(mimeTypes)); 477 intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris); 478 479 } else { 480 return; 481 } 482 483 intent = Intent.createChooser(intent, getActivity().getText(R.string.share_via)); 484 startActivity(intent); 485 } 486 487 private void onDeleteDocuments(List<DocumentInfo> docs) { 488 final Context context = getActivity(); 489 final ContentResolver resolver = context.getContentResolver(); 490 491 boolean hadTrouble = false; 492 for (DocumentInfo doc : docs) { 493 if (!doc.isDeleteSupported()) { 494 Log.w(TAG, "Skipping " + doc); 495 hadTrouble = true; 496 continue; 497 } 498 499 if (!DocumentsContract.deleteDocument(resolver, doc.derivedUri)) { 500 Log.w(TAG, "Failed to delete " + doc); 501 hadTrouble = true; 502 } 503 } 504 505 if (hadTrouble) { 506 Toast.makeText(context, R.string.toast_failed_delete, Toast.LENGTH_SHORT).show(); 507 } 508 } 509 510 private static State getDisplayState(Fragment fragment) { 511 return ((DocumentsActivity) fragment.getActivity()).getDisplayState(); 512 } 513 514 private static abstract class Footer { 515 private final int mItemViewType; 516 517 public Footer(int itemViewType) { 518 mItemViewType = itemViewType; 519 } 520 521 public abstract View getView(View convertView, ViewGroup parent); 522 523 public int getItemViewType() { 524 return mItemViewType; 525 } 526 } 527 528 private static class LoadingFooter extends Footer { 529 public LoadingFooter() { 530 super(1); 531 } 532 533 @Override 534 public View getView(View convertView, ViewGroup parent) { 535 final Context context = parent.getContext(); 536 if (convertView == null) { 537 final LayoutInflater inflater = LayoutInflater.from(context); 538 convertView = inflater.inflate(R.layout.item_loading, parent, false); 539 } 540 return convertView; 541 } 542 } 543 544 private class MessageFooter extends Footer { 545 private final int mIcon; 546 private final String mMessage; 547 548 public MessageFooter(int itemViewType, int icon, String message) { 549 super(itemViewType); 550 mIcon = icon; 551 mMessage = message; 552 } 553 554 @Override 555 public View getView(View convertView, ViewGroup parent) { 556 final Context context = parent.getContext(); 557 final State state = getDisplayState(DirectoryFragment.this); 558 559 if (convertView == null) { 560 final LayoutInflater inflater = LayoutInflater.from(context); 561 if (state.derivedMode == MODE_LIST) { 562 convertView = inflater.inflate(R.layout.item_message_list, parent, false); 563 } else if (state.derivedMode == MODE_GRID) { 564 convertView = inflater.inflate(R.layout.item_message_grid, parent, false); 565 } else { 566 throw new IllegalStateException(); 567 } 568 } 569 570 final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon); 571 final TextView title = (TextView) convertView.findViewById(android.R.id.title); 572 icon.setImageResource(mIcon); 573 title.setText(mMessage); 574 return convertView; 575 } 576 } 577 578 private class DocumentsAdapter extends BaseAdapter { 579 private Cursor mCursor; 580 private int mCursorCount; 581 582 private List<Footer> mFooters = Lists.newArrayList(); 583 584 public void swapCursor(Cursor cursor) { 585 mCursor = cursor; 586 mCursorCount = cursor != null ? cursor.getCount() : 0; 587 588 mFooters.clear(); 589 590 final Bundle extras = cursor != null ? cursor.getExtras() : null; 591 if (extras != null) { 592 final String info = extras.getString(DocumentsContract.EXTRA_INFO); 593 if (info != null) { 594 mFooters.add(new MessageFooter(2, R.drawable.ic_dialog_alert, info)); 595 } 596 final String error = extras.getString(DocumentsContract.EXTRA_ERROR); 597 if (error != null) { 598 mFooters.add(new MessageFooter(3, R.drawable.ic_dialog_alert, error)); 599 } 600 if (extras.getBoolean(DocumentsContract.EXTRA_LOADING, false)) { 601 mFooters.add(new LoadingFooter()); 602 } 603 } 604 605 if (isEmpty()) { 606 mEmptyView.setVisibility(View.VISIBLE); 607 } else { 608 mEmptyView.setVisibility(View.GONE); 609 } 610 611 notifyDataSetChanged(); 612 } 613 614 @Override 615 public View getView(int position, View convertView, ViewGroup parent) { 616 if (position < mCursorCount) { 617 return getDocumentView(position, convertView, parent); 618 } else { 619 position -= mCursorCount; 620 convertView = mFooters.get(position).getView(convertView, parent); 621 // Only the view itself is disabled; contents inside shouldn't 622 // be dimmed. 623 convertView.setEnabled(false); 624 return convertView; 625 } 626 } 627 628 private View getDocumentView(int position, View convertView, ViewGroup parent) { 629 final Context context = parent.getContext(); 630 final State state = getDisplayState(DirectoryFragment.this); 631 632 final RootsCache roots = DocumentsApplication.getRootsCache(context); 633 final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( 634 context, mThumbSize); 635 636 if (convertView == null) { 637 final LayoutInflater inflater = LayoutInflater.from(context); 638 if (state.derivedMode == MODE_LIST) { 639 convertView = inflater.inflate(R.layout.item_doc_list, parent, false); 640 } else if (state.derivedMode == MODE_GRID) { 641 convertView = inflater.inflate(R.layout.item_doc_grid, parent, false); 642 } else { 643 throw new IllegalStateException(); 644 } 645 } 646 647 final Cursor cursor = getItem(position); 648 649 final String docAuthority = getCursorString(cursor, RootCursorWrapper.COLUMN_AUTHORITY); 650 final String docRootId = getCursorString(cursor, RootCursorWrapper.COLUMN_ROOT_ID); 651 final String docId = getCursorString(cursor, Document.COLUMN_DOCUMENT_ID); 652 final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); 653 final String docDisplayName = getCursorString(cursor, Document.COLUMN_DISPLAY_NAME); 654 final long docLastModified = getCursorLong(cursor, Document.COLUMN_LAST_MODIFIED); 655 final int docIcon = getCursorInt(cursor, Document.COLUMN_ICON); 656 final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); 657 final String docSummary = getCursorString(cursor, Document.COLUMN_SUMMARY); 658 final long docSize = getCursorLong(cursor, Document.COLUMN_SIZE); 659 660 final View icon = convertView.findViewById(android.R.id.icon); 661 final ImageView iconMime = (ImageView) convertView.findViewById(R.id.icon_mime); 662 final ImageView iconThumb = (ImageView) convertView.findViewById(R.id.icon_thumb); 663 final TextView title = (TextView) convertView.findViewById(android.R.id.title); 664 final View line2 = convertView.findViewById(R.id.line2); 665 final ImageView icon1 = (ImageView) convertView.findViewById(android.R.id.icon1); 666 final TextView summary = (TextView) convertView.findViewById(android.R.id.summary); 667 final TextView date = (TextView) convertView.findViewById(R.id.date); 668 final TextView size = (TextView) convertView.findViewById(R.id.size); 669 670 final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag(); 671 if (oldTask != null) { 672 oldTask.reallyCancel(); 673 iconThumb.setTag(null); 674 } 675 676 iconMime.animate().cancel(); 677 iconThumb.animate().cancel(); 678 679 final boolean supportsThumbnail = (docFlags & Document.FLAG_SUPPORTS_THUMBNAIL) != 0; 680 final boolean allowThumbnail = (state.derivedMode == MODE_GRID) 681 || MimePredicate.mimeMatches(LIST_THUMBNAIL_MIMES, docMimeType); 682 683 boolean cacheHit = false; 684 if (supportsThumbnail && allowThumbnail) { 685 final Uri uri = DocumentsContract.buildDocumentUri(docAuthority, docId); 686 final Bitmap cachedResult = thumbs.get(uri); 687 if (cachedResult != null) { 688 iconThumb.setImageBitmap(cachedResult); 689 cacheHit = true; 690 } else { 691 iconThumb.setImageDrawable(null); 692 final ThumbnailAsyncTask task = new ThumbnailAsyncTask( 693 uri, iconMime, iconThumb, mThumbSize); 694 iconThumb.setTag(task); 695 task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR); 696 } 697 } 698 699 // Always throw MIME icon into place, even when a thumbnail is being 700 // loaded in background. 701 if (cacheHit) { 702 iconMime.setAlpha(0f); 703 iconThumb.setAlpha(1f); 704 } else { 705 iconMime.setAlpha(1f); 706 iconThumb.setAlpha(0f); 707 if (docIcon != 0) { 708 iconMime.setImageDrawable( 709 IconUtils.loadPackageIcon(context, docAuthority, docIcon)); 710 } else { 711 iconMime.setImageDrawable(IconUtils.loadMimeIcon(context, docMimeType)); 712 } 713 } 714 715 title.setText(docDisplayName); 716 717 boolean hasLine2 = false; 718 719 if (mType == TYPE_RECENT_OPEN) { 720 final RootInfo root = roots.getRoot(docAuthority, docRootId); 721 final Drawable iconDrawable = root.loadIcon(context); 722 icon1.setVisibility(View.VISIBLE); 723 icon1.setImageDrawable(iconDrawable); 724 725 if (iconDrawable != null && roots.isIconUnique(root)) { 726 // No summary needed if icon speaks for itself 727 summary.setVisibility(View.INVISIBLE); 728 } else { 729 summary.setText(root.getDirectoryString()); 730 summary.setVisibility(View.VISIBLE); 731 summary.setTextAlignment(TextView.TEXT_ALIGNMENT_TEXT_END); 732 hasLine2 = true; 733 } 734 } else { 735 icon1.setVisibility(View.GONE); 736 if (docSummary != null) { 737 summary.setText(docSummary); 738 summary.setVisibility(View.VISIBLE); 739 hasLine2 = true; 740 } else { 741 summary.setVisibility(View.INVISIBLE); 742 } 743 } 744 745 if (docLastModified == -1) { 746 date.setText(null); 747 } else { 748 date.setText(formatTime(context, docLastModified)); 749 hasLine2 = true; 750 } 751 752 if (state.showSize) { 753 size.setVisibility(View.VISIBLE); 754 if (Document.MIME_TYPE_DIR.equals(docMimeType) || docSize == -1) { 755 size.setText(null); 756 } else { 757 size.setText(Formatter.formatFileSize(context, docSize)); 758 hasLine2 = true; 759 } 760 } else { 761 size.setVisibility(View.GONE); 762 } 763 764 line2.setVisibility(hasLine2 ? View.VISIBLE : View.GONE); 765 766 final boolean enabled = Document.MIME_TYPE_DIR.equals(docMimeType) 767 || MimePredicate.mimeMatches(state.acceptMimes, docMimeType); 768 if (enabled) { 769 setEnabledRecursive(convertView, true); 770 icon.setAlpha(1f); 771 icon1.setAlpha(1f); 772 } else { 773 setEnabledRecursive(convertView, false); 774 icon.setAlpha(0.5f); 775 icon1.setAlpha(0.5f); 776 } 777 778 return convertView; 779 } 780 781 @Override 782 public int getCount() { 783 return mCursorCount + mFooters.size(); 784 } 785 786 @Override 787 public Cursor getItem(int position) { 788 if (position < mCursorCount) { 789 mCursor.moveToPosition(position); 790 return mCursor; 791 } else { 792 return null; 793 } 794 } 795 796 @Override 797 public long getItemId(int position) { 798 return position; 799 } 800 801 @Override 802 public int getViewTypeCount() { 803 return 4; 804 } 805 806 @Override 807 public int getItemViewType(int position) { 808 if (position < mCursorCount) { 809 return 0; 810 } else { 811 position -= mCursorCount; 812 return mFooters.get(position).getItemViewType(); 813 } 814 } 815 } 816 817 private static class ThumbnailAsyncTask extends AsyncTask<Uri, Void, Bitmap> { 818 private final Uri mUri; 819 private final ImageView mIconMime; 820 private final ImageView mIconThumb; 821 private final Point mThumbSize; 822 private final CancellationSignal mSignal; 823 824 public ThumbnailAsyncTask( 825 Uri uri, ImageView iconMime, ImageView iconThumb, Point thumbSize) { 826 mUri = uri; 827 mIconMime = iconMime; 828 mIconThumb = iconThumb; 829 mThumbSize = thumbSize; 830 mSignal = new CancellationSignal(); 831 } 832 833 public void reallyCancel() { 834 cancel(false); 835 mSignal.cancel(); 836 } 837 838 @Override 839 protected Bitmap doInBackground(Uri... params) { 840 final Context context = mIconThumb.getContext(); 841 842 Bitmap result = null; 843 try { 844 // TODO: switch to using unstable provider 845 result = DocumentsContract.getDocumentThumbnail( 846 context.getContentResolver(), mUri, mThumbSize, mSignal); 847 if (result != null) { 848 final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( 849 context, mThumbSize); 850 thumbs.put(mUri, result); 851 } 852 } catch (Exception e) { 853 Log.w(TAG, "Failed to load thumbnail: " + e); 854 } 855 return result; 856 } 857 858 @Override 859 protected void onPostExecute(Bitmap result) { 860 if (mIconThumb.getTag() == this && result != null) { 861 mIconThumb.setTag(null); 862 mIconThumb.setImageBitmap(result); 863 864 mIconMime.setAlpha(1f); 865 mIconMime.animate().alpha(0f).start(); 866 mIconThumb.setAlpha(0f); 867 mIconThumb.animate().alpha(1f).start(); 868 } 869 } 870 } 871 872 private static String formatTime(Context context, long when) { 873 // TODO: DateUtils should make this easier 874 Time then = new Time(); 875 then.set(when); 876 Time now = new Time(); 877 now.setToNow(); 878 879 int flags = DateUtils.FORMAT_NO_NOON | DateUtils.FORMAT_NO_MIDNIGHT 880 | DateUtils.FORMAT_ABBREV_ALL; 881 882 if (then.year != now.year) { 883 flags |= DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE; 884 } else if (then.yearDay != now.yearDay) { 885 flags |= DateUtils.FORMAT_SHOW_DATE; 886 } else { 887 flags |= DateUtils.FORMAT_SHOW_TIME; 888 } 889 890 return DateUtils.formatDateTime(context, when, flags); 891 } 892 893 private String findCommonMimeType(List<String> mimeTypes) { 894 String[] commonType = mimeTypes.get(0).split("/"); 895 if (commonType.length != 2) { 896 return "*/*"; 897 } 898 899 for (int i = 1; i < mimeTypes.size(); i++) { 900 String[] type = mimeTypes.get(i).split("/"); 901 if (type.length != 2) continue; 902 903 if (!commonType[1].equals(type[1])) { 904 commonType[1] = "*"; 905 } 906 907 if (!commonType[0].equals(type[0])) { 908 commonType[0] = "*"; 909 commonType[1] = "*"; 910 break; 911 } 912 } 913 914 return commonType[0] + "/" + commonType[1]; 915 } 916 917 private void setEnabledRecursive(View v, boolean enabled) { 918 if (v.isEnabled() == enabled) return; 919 v.setEnabled(enabled); 920 921 if (v instanceof ViewGroup) { 922 final ViewGroup vg = (ViewGroup) v; 923 for (int i = vg.getChildCount() - 1; i >= 0; i--) { 924 setEnabledRecursive(vg.getChildAt(i), enabled); 925 } 926 } 927 } 928} 929