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 17 package com.android.documentsui; 18 19 import static com.android.documentsui.DocumentsActivity.TAG; 20 import static com.android.documentsui.DocumentsActivity.State.ACTION_CREATE; 21 import static com.android.documentsui.DocumentsActivity.State.ACTION_MANAGE; 22 import static com.android.documentsui.DocumentsActivity.State.MODE_GRID; 23 import static com.android.documentsui.DocumentsActivity.State.MODE_LIST; 24 import static com.android.documentsui.DocumentsActivity.State.MODE_UNKNOWN; 25 import static com.android.documentsui.DocumentsActivity.State.SORT_ORDER_UNKNOWN; 26 import static com.android.documentsui.model.DocumentInfo.getCursorInt; 27 import static com.android.documentsui.model.DocumentInfo.getCursorLong; 28 import static com.android.documentsui.model.DocumentInfo.getCursorString; 29 30 import android.app.ActivityManager; 31 import android.app.Fragment; 32 import android.app.FragmentManager; 33 import android.app.FragmentTransaction; 34 import android.app.LoaderManager.LoaderCallbacks; 35 import android.content.ContentProviderClient; 36 import android.content.ContentResolver; 37 import android.content.ContentValues; 38 import android.content.Context; 39 import android.content.Intent; 40 import android.content.Loader; 41 import android.content.res.Resources; 42 import android.database.Cursor; 43 import android.graphics.Bitmap; 44 import android.graphics.Point; 45 import android.graphics.drawable.Drawable; 46 import android.graphics.drawable.InsetDrawable; 47 import android.net.Uri; 48 import android.os.AsyncTask; 49 import android.os.Bundle; 50 import android.os.CancellationSignal; 51 import android.os.OperationCanceledException; 52 import android.os.Parcelable; 53 import android.provider.DocumentsContract; 54 import android.provider.DocumentsContract.Document; 55 import android.text.format.DateUtils; 56 import android.text.format.Formatter; 57 import android.text.format.Time; 58 import android.util.Log; 59 import android.util.SparseArray; 60 import android.util.SparseBooleanArray; 61 import android.view.ActionMode; 62 import android.view.LayoutInflater; 63 import android.view.Menu; 64 import android.view.MenuItem; 65 import android.view.View; 66 import android.view.ViewGroup; 67 import android.widget.AbsListView; 68 import android.widget.AbsListView.MultiChoiceModeListener; 69 import android.widget.AbsListView.RecyclerListener; 70 import android.widget.AdapterView; 71 import android.widget.AdapterView.OnItemClickListener; 72 import android.widget.BaseAdapter; 73 import android.widget.GridView; 74 import android.widget.ImageView; 75 import android.widget.ListView; 76 import android.widget.TextView; 77 import android.widget.Toast; 78 79 import com.android.documentsui.DocumentsActivity.State; 80 import com.android.documentsui.ProviderExecutor.Preemptable; 81 import com.android.documentsui.RecentsProvider.StateColumns; 82 import com.android.documentsui.model.DocumentInfo; 83 import com.android.documentsui.model.RootInfo; 84 import com.google.android.collect.Lists; 85 86 import java.util.ArrayList; 87 import java.util.List; 88 89 /** 90 * Display the documents inside a single directory. 91 */ 92 public class DirectoryFragment extends Fragment { 93 94 private View mEmptyView; 95 private ListView mListView; 96 private GridView mGridView; 97 98 private AbsListView mCurrentView; 99 100 public static final int TYPE_NORMAL = 1; 101 public static final int TYPE_SEARCH = 2; 102 public static final int TYPE_RECENT_OPEN = 3; 103 104 public static final int ANIM_NONE = 1; 105 public static final int ANIM_SIDE = 2; 106 public static final int ANIM_DOWN = 3; 107 public static final int ANIM_UP = 4; 108 109 private int mType = TYPE_NORMAL; 110 private String mStateKey; 111 112 private int mLastMode = MODE_UNKNOWN; 113 private int mLastSortOrder = SORT_ORDER_UNKNOWN; 114 private boolean mLastShowSize = false; 115 116 private boolean mHideGridTitles = false; 117 118 private boolean mSvelteRecents; 119 private Point mThumbSize; 120 121 private DocumentsAdapter mAdapter; 122 private LoaderCallbacks<DirectoryResult> mCallbacks; 123 124 private static final String EXTRA_TYPE = "type"; 125 private static final String EXTRA_ROOT = "root"; 126 private static final String EXTRA_DOC = "doc"; 127 private static final String EXTRA_QUERY = "query"; 128 private static final String EXTRA_IGNORE_STATE = "ignoreState"; 129 130 private final int mLoaderId = 42; 131 132 public static void showNormal(FragmentManager fm, RootInfo root, DocumentInfo doc, int anim) { 133 show(fm, TYPE_NORMAL, root, doc, null, anim); 134 } 135 136 public static void showSearch(FragmentManager fm, RootInfo root, String query, int anim) { 137 show(fm, TYPE_SEARCH, root, null, query, anim); 138 } 139 140 public static void showRecentsOpen(FragmentManager fm, int anim) { 141 show(fm, TYPE_RECENT_OPEN, null, null, null, anim); 142 } 143 144 private static void show(FragmentManager fm, int type, RootInfo root, DocumentInfo doc, 145 String query, int anim) { 146 final Bundle args = new Bundle(); 147 args.putInt(EXTRA_TYPE, type); 148 args.putParcelable(EXTRA_ROOT, root); 149 args.putParcelable(EXTRA_DOC, doc); 150 args.putString(EXTRA_QUERY, query); 151 152 final FragmentTransaction ft = fm.beginTransaction(); 153 switch (anim) { 154 case ANIM_SIDE: 155 args.putBoolean(EXTRA_IGNORE_STATE, true); 156 break; 157 case ANIM_DOWN: 158 args.putBoolean(EXTRA_IGNORE_STATE, true); 159 ft.setCustomAnimations(R.animator.dir_down, R.animator.dir_frozen); 160 break; 161 case ANIM_UP: 162 ft.setCustomAnimations(R.animator.dir_frozen, R.animator.dir_up); 163 break; 164 } 165 166 final DirectoryFragment fragment = new DirectoryFragment(); 167 fragment.setArguments(args); 168 169 ft.replace(R.id.container_directory, fragment); 170 ft.commitAllowingStateLoss(); 171 } 172 173 private static String buildStateKey(RootInfo root, DocumentInfo doc) { 174 final StringBuilder builder = new StringBuilder(); 175 builder.append(root != null ? root.authority : "null").append(';'); 176 builder.append(root != null ? root.rootId : "null").append(';'); 177 builder.append(doc != null ? doc.documentId : "null"); 178 return builder.toString(); 179 } 180 181 public static DirectoryFragment get(FragmentManager fm) { 182 // TODO: deal with multiple directories shown at once 183 return (DirectoryFragment) fm.findFragmentById(R.id.container_directory); 184 } 185 186 @Override 187 public View onCreateView( 188 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 189 final Context context = inflater.getContext(); 190 final Resources res = context.getResources(); 191 final View view = inflater.inflate(R.layout.fragment_directory, container, false); 192 193 mEmptyView = view.findViewById(android.R.id.empty); 194 195 mListView = (ListView) view.findViewById(R.id.list); 196 mListView.setOnItemClickListener(mItemListener); 197 mListView.setMultiChoiceModeListener(mMultiListener); 198 mListView.setRecyclerListener(mRecycleListener); 199 200 // Indent our list divider to align with text 201 final Drawable divider = mListView.getDivider(); 202 final boolean insetLeft = res.getBoolean(R.bool.list_divider_inset_left); 203 final int insetSize = res.getDimensionPixelSize(R.dimen.list_divider_inset); 204 if (insetLeft) { 205 mListView.setDivider(new InsetDrawable(divider, insetSize, 0, 0, 0)); 206 } else { 207 mListView.setDivider(new InsetDrawable(divider, 0, 0, insetSize, 0)); 208 } 209 210 mGridView = (GridView) view.findViewById(R.id.grid); 211 mGridView.setOnItemClickListener(mItemListener); 212 mGridView.setMultiChoiceModeListener(mMultiListener); 213 mGridView.setRecyclerListener(mRecycleListener); 214 215 return view; 216 } 217 218 @Override 219 public void onDestroyView() { 220 super.onDestroyView(); 221 222 // Cancel any outstanding thumbnail requests 223 final ViewGroup target = (mListView.getAdapter() != null) ? mListView : mGridView; 224 final int count = target.getChildCount(); 225 for (int i = 0; i < count; i++) { 226 final View view = target.getChildAt(i); 227 mRecycleListener.onMovedToScrapHeap(view); 228 } 229 230 // Tear down any selection in progress 231 mListView.setChoiceMode(AbsListView.CHOICE_MODE_NONE); 232 mGridView.setChoiceMode(AbsListView.CHOICE_MODE_NONE); 233 } 234 235 @Override 236 public void onActivityCreated(Bundle savedInstanceState) { 237 super.onActivityCreated(savedInstanceState); 238 239 final Context context = getActivity(); 240 final State state = getDisplayState(DirectoryFragment.this); 241 242 final RootInfo root = getArguments().getParcelable(EXTRA_ROOT); 243 final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC); 244 245 mAdapter = new DocumentsAdapter(); 246 mType = getArguments().getInt(EXTRA_TYPE); 247 mStateKey = buildStateKey(root, doc); 248 249 if (mType == TYPE_RECENT_OPEN) { 250 // Hide titles when showing recents for picking images/videos 251 mHideGridTitles = MimePredicate.mimeMatches( 252 MimePredicate.VISUAL_MIMES, state.acceptMimes); 253 } else { 254 mHideGridTitles = (doc != null) && doc.isGridTitlesHidden(); 255 } 256 257 final ActivityManager am = (ActivityManager) context.getSystemService( 258 Context.ACTIVITY_SERVICE); 259 mSvelteRecents = am.isLowRamDevice() && (mType == TYPE_RECENT_OPEN); 260 261 mCallbacks = new LoaderCallbacks<DirectoryResult>() { 262 @Override 263 public Loader<DirectoryResult> onCreateLoader(int id, Bundle args) { 264 final String query = getArguments().getString(EXTRA_QUERY); 265 266 Uri contentsUri; 267 switch (mType) { 268 case TYPE_NORMAL: 269 contentsUri = DocumentsContract.buildChildDocumentsUri( 270 doc.authority, doc.documentId); 271 if (state.action == ACTION_MANAGE) { 272 contentsUri = DocumentsContract.setManageMode(contentsUri); 273 } 274 return new DirectoryLoader( 275 context, mType, root, doc, contentsUri, state.userSortOrder); 276 case TYPE_SEARCH: 277 contentsUri = DocumentsContract.buildSearchDocumentsUri( 278 root.authority, root.rootId, query); 279 if (state.action == ACTION_MANAGE) { 280 contentsUri = DocumentsContract.setManageMode(contentsUri); 281 } 282 return new DirectoryLoader( 283 context, mType, root, doc, contentsUri, state.userSortOrder); 284 case TYPE_RECENT_OPEN: 285 final RootsCache roots = DocumentsApplication.getRootsCache(context); 286 return new RecentLoader(context, roots, state); 287 default: 288 throw new IllegalStateException("Unknown type " + mType); 289 } 290 } 291 292 @Override 293 public void onLoadFinished(Loader<DirectoryResult> loader, DirectoryResult result) { 294 if (!isAdded()) return; 295 296 mAdapter.swapResult(result); 297 298 // Push latest state up to UI 299 // TODO: if mode change was racing with us, don't overwrite it 300 if (result.mode != MODE_UNKNOWN) { 301 state.derivedMode = result.mode; 302 } 303 state.derivedSortOrder = result.sortOrder; 304 ((DocumentsActivity) context).onStateChanged(); 305 306 updateDisplayState(); 307 308 // When launched into empty recents, show drawer 309 if (mType == TYPE_RECENT_OPEN && mAdapter.isEmpty() && !state.stackTouched) { 310 ((DocumentsActivity) context).setRootsDrawerOpen(true); 311 } 312 313 // Restore any previous instance state 314 final SparseArray<Parcelable> container = state.dirState.remove(mStateKey); 315 if (container != null && !getArguments().getBoolean(EXTRA_IGNORE_STATE, false)) { 316 getView().restoreHierarchyState(container); 317 } else if (mLastSortOrder != state.derivedSortOrder) { 318 mListView.smoothScrollToPosition(0); 319 mGridView.smoothScrollToPosition(0); 320 } 321 322 mLastSortOrder = state.derivedSortOrder; 323 } 324 325 @Override 326 public void onLoaderReset(Loader<DirectoryResult> loader) { 327 mAdapter.swapResult(null); 328 } 329 }; 330 331 // Kick off loader at least once 332 getLoaderManager().restartLoader(mLoaderId, null, mCallbacks); 333 334 updateDisplayState(); 335 } 336 337 @Override 338 public void onStop() { 339 super.onStop(); 340 341 // Remember last scroll location 342 final SparseArray<Parcelable> container = new SparseArray<Parcelable>(); 343 getView().saveHierarchyState(container); 344 final State state = getDisplayState(this); 345 state.dirState.put(mStateKey, container); 346 } 347 348 @Override 349 public void onResume() { 350 super.onResume(); 351 updateDisplayState(); 352 } 353 354 public void onDisplayStateChanged() { 355 updateDisplayState(); 356 } 357 358 public void onUserSortOrderChanged() { 359 // Sort order change always triggers reload; we'll trigger state change 360 // on the flip side. 361 getLoaderManager().restartLoader(mLoaderId, null, mCallbacks); 362 } 363 364 public void onUserModeChanged() { 365 final ContentResolver resolver = getActivity().getContentResolver(); 366 final State state = getDisplayState(this); 367 368 final RootInfo root = getArguments().getParcelable(EXTRA_ROOT); 369 final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC); 370 371 if (root != null && doc != null) { 372 final Uri stateUri = RecentsProvider.buildState( 373 root.authority, root.rootId, doc.documentId); 374 final ContentValues values = new ContentValues(); 375 values.put(StateColumns.MODE, state.userMode); 376 377 new AsyncTask<Void, Void, Void>() { 378 @Override 379 protected Void doInBackground(Void... params) { 380 resolver.insert(stateUri, values); 381 return null; 382 } 383 }.execute(); 384 } 385 386 // Mode change is just visual change; no need to kick loader, and 387 // deliver change event immediately. 388 state.derivedMode = state.userMode; 389 ((DocumentsActivity) getActivity()).onStateChanged(); 390 391 updateDisplayState(); 392 } 393 394 private void updateDisplayState() { 395 final State state = getDisplayState(this); 396 397 if (mLastMode == state.derivedMode && mLastShowSize == state.showSize) return; 398 mLastMode = state.derivedMode; 399 mLastShowSize = state.showSize; 400 401 mListView.setVisibility(state.derivedMode == MODE_LIST ? View.VISIBLE : View.GONE); 402 mGridView.setVisibility(state.derivedMode == MODE_GRID ? View.VISIBLE : View.GONE); 403 404 final int choiceMode; 405 if (state.allowMultiple) { 406 choiceMode = ListView.CHOICE_MODE_MULTIPLE_MODAL; 407 } else { 408 choiceMode = ListView.CHOICE_MODE_NONE; 409 } 410 411 final int thumbSize; 412 if (state.derivedMode == MODE_GRID) { 413 thumbSize = getResources().getDimensionPixelSize(R.dimen.grid_width); 414 mListView.setAdapter(null); 415 mListView.setChoiceMode(ListView.CHOICE_MODE_NONE); 416 mGridView.setAdapter(mAdapter); 417 mGridView.setColumnWidth(getResources().getDimensionPixelSize(R.dimen.grid_width)); 418 mGridView.setNumColumns(GridView.AUTO_FIT); 419 mGridView.setChoiceMode(choiceMode); 420 mCurrentView = mGridView; 421 } else if (state.derivedMode == MODE_LIST) { 422 thumbSize = getResources().getDimensionPixelSize(R.dimen.icon_size); 423 mGridView.setAdapter(null); 424 mGridView.setChoiceMode(ListView.CHOICE_MODE_NONE); 425 mListView.setAdapter(mAdapter); 426 mListView.setChoiceMode(choiceMode); 427 mCurrentView = mListView; 428 } else { 429 throw new IllegalStateException("Unknown state " + state.derivedMode); 430 } 431 432 mThumbSize = new Point(thumbSize, thumbSize); 433 } 434 435 private OnItemClickListener mItemListener = new OnItemClickListener() { 436 @Override 437 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 438 final Cursor cursor = mAdapter.getItem(position); 439 if (cursor != null) { 440 final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); 441 final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); 442 if (isDocumentEnabled(docMimeType, docFlags)) { 443 final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); 444 ((DocumentsActivity) getActivity()).onDocumentPicked(doc); 445 } 446 } 447 } 448 }; 449 450 private MultiChoiceModeListener mMultiListener = new MultiChoiceModeListener() { 451 @Override 452 public boolean onCreateActionMode(ActionMode mode, Menu menu) { 453 mode.getMenuInflater().inflate(R.menu.mode_directory, menu); 454 mode.setTitle(getResources() 455 .getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount())); 456 return true; 457 } 458 459 @Override 460 public boolean onPrepareActionMode(ActionMode mode, Menu menu) { 461 final State state = getDisplayState(DirectoryFragment.this); 462 463 final MenuItem open = menu.findItem(R.id.menu_open); 464 final MenuItem share = menu.findItem(R.id.menu_share); 465 final MenuItem delete = menu.findItem(R.id.menu_delete); 466 467 final boolean manageMode = state.action == ACTION_MANAGE; 468 open.setVisible(!manageMode); 469 share.setVisible(manageMode); 470 delete.setVisible(manageMode); 471 472 return true; 473 } 474 475 @Override 476 public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 477 final SparseBooleanArray checked = mCurrentView.getCheckedItemPositions(); 478 final ArrayList<DocumentInfo> docs = Lists.newArrayList(); 479 final int size = checked.size(); 480 for (int i = 0; i < size; i++) { 481 if (checked.valueAt(i)) { 482 final Cursor cursor = mAdapter.getItem(checked.keyAt(i)); 483 final DocumentInfo doc = DocumentInfo.fromDirectoryCursor(cursor); 484 docs.add(doc); 485 } 486 } 487 488 final int id = item.getItemId(); 489 if (id == R.id.menu_open) { 490 DocumentsActivity.get(DirectoryFragment.this).onDocumentsPicked(docs); 491 mode.finish(); 492 return true; 493 494 } else if (id == R.id.menu_share) { 495 onShareDocuments(docs); 496 mode.finish(); 497 return true; 498 499 } else if (id == R.id.menu_delete) { 500 onDeleteDocuments(docs); 501 mode.finish(); 502 return true; 503 504 } else { 505 return false; 506 } 507 } 508 509 @Override 510 public void onDestroyActionMode(ActionMode mode) { 511 // ignored 512 } 513 514 @Override 515 public void onItemCheckedStateChanged( 516 ActionMode mode, int position, long id, boolean checked) { 517 if (checked) { 518 // Directories and footer items cannot be checked 519 boolean valid = false; 520 521 final Cursor cursor = mAdapter.getItem(position); 522 if (cursor != null) { 523 final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); 524 final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); 525 if (!Document.MIME_TYPE_DIR.equals(docMimeType)) { 526 valid = isDocumentEnabled(docMimeType, docFlags); 527 } 528 } 529 530 if (!valid) { 531 mCurrentView.setItemChecked(position, false); 532 } 533 } 534 535 mode.setTitle(getResources() 536 .getString(R.string.mode_selected_count, mCurrentView.getCheckedItemCount())); 537 } 538 }; 539 540 private RecyclerListener mRecycleListener = new RecyclerListener() { 541 @Override 542 public void onMovedToScrapHeap(View view) { 543 final ImageView iconThumb = (ImageView) view.findViewById(R.id.icon_thumb); 544 if (iconThumb != null) { 545 final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag(); 546 if (oldTask != null) { 547 oldTask.preempt(); 548 iconThumb.setTag(null); 549 } 550 } 551 } 552 }; 553 554 private void onShareDocuments(List<DocumentInfo> docs) { 555 Intent intent; 556 if (docs.size() == 1) { 557 final DocumentInfo doc = docs.get(0); 558 559 intent = new Intent(Intent.ACTION_SEND); 560 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); 561 intent.addCategory(Intent.CATEGORY_DEFAULT); 562 intent.setType(doc.mimeType); 563 intent.putExtra(Intent.EXTRA_STREAM, doc.derivedUri); 564 565 } else if (docs.size() > 1) { 566 intent = new Intent(Intent.ACTION_SEND_MULTIPLE); 567 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); 568 intent.addCategory(Intent.CATEGORY_DEFAULT); 569 570 final ArrayList<String> mimeTypes = Lists.newArrayList(); 571 final ArrayList<Uri> uris = Lists.newArrayList(); 572 for (DocumentInfo doc : docs) { 573 mimeTypes.add(doc.mimeType); 574 uris.add(doc.derivedUri); 575 } 576 577 intent.setType(findCommonMimeType(mimeTypes)); 578 intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris); 579 580 } else { 581 return; 582 } 583 584 intent = Intent.createChooser(intent, getActivity().getText(R.string.share_via)); 585 startActivity(intent); 586 } 587 588 private void onDeleteDocuments(List<DocumentInfo> docs) { 589 final Context context = getActivity(); 590 final ContentResolver resolver = context.getContentResolver(); 591 592 boolean hadTrouble = false; 593 for (DocumentInfo doc : docs) { 594 if (!doc.isDeleteSupported()) { 595 Log.w(TAG, "Skipping " + doc); 596 hadTrouble = true; 597 continue; 598 } 599 600 ContentProviderClient client = null; 601 try { 602 client = DocumentsApplication.acquireUnstableProviderOrThrow( 603 resolver, doc.derivedUri.getAuthority()); 604 DocumentsContract.deleteDocument(client, doc.derivedUri); 605 } catch (Exception e) { 606 Log.w(TAG, "Failed to delete " + doc); 607 hadTrouble = true; 608 } finally { 609 ContentProviderClient.releaseQuietly(client); 610 } 611 } 612 613 if (hadTrouble) { 614 Toast.makeText(context, R.string.toast_failed_delete, Toast.LENGTH_SHORT).show(); 615 } 616 } 617 618 private static State getDisplayState(Fragment fragment) { 619 return ((DocumentsActivity) fragment.getActivity()).getDisplayState(); 620 } 621 622 private static abstract class Footer { 623 private final int mItemViewType; 624 625 public Footer(int itemViewType) { 626 mItemViewType = itemViewType; 627 } 628 629 public abstract View getView(View convertView, ViewGroup parent); 630 631 public int getItemViewType() { 632 return mItemViewType; 633 } 634 } 635 636 private class LoadingFooter extends Footer { 637 public LoadingFooter() { 638 super(1); 639 } 640 641 @Override 642 public View getView(View convertView, ViewGroup parent) { 643 final Context context = parent.getContext(); 644 final State state = getDisplayState(DirectoryFragment.this); 645 646 if (convertView == null) { 647 final LayoutInflater inflater = LayoutInflater.from(context); 648 if (state.derivedMode == MODE_LIST) { 649 convertView = inflater.inflate(R.layout.item_loading_list, parent, false); 650 } else if (state.derivedMode == MODE_GRID) { 651 convertView = inflater.inflate(R.layout.item_loading_grid, parent, false); 652 } else { 653 throw new IllegalStateException(); 654 } 655 } 656 657 return convertView; 658 } 659 } 660 661 private class MessageFooter extends Footer { 662 private final int mIcon; 663 private final String mMessage; 664 665 public MessageFooter(int itemViewType, int icon, String message) { 666 super(itemViewType); 667 mIcon = icon; 668 mMessage = message; 669 } 670 671 @Override 672 public View getView(View convertView, ViewGroup parent) { 673 final Context context = parent.getContext(); 674 final State state = getDisplayState(DirectoryFragment.this); 675 676 if (convertView == null) { 677 final LayoutInflater inflater = LayoutInflater.from(context); 678 if (state.derivedMode == MODE_LIST) { 679 convertView = inflater.inflate(R.layout.item_message_list, parent, false); 680 } else if (state.derivedMode == MODE_GRID) { 681 convertView = inflater.inflate(R.layout.item_message_grid, parent, false); 682 } else { 683 throw new IllegalStateException(); 684 } 685 } 686 687 final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon); 688 final TextView title = (TextView) convertView.findViewById(android.R.id.title); 689 icon.setImageResource(mIcon); 690 title.setText(mMessage); 691 return convertView; 692 } 693 } 694 695 private class DocumentsAdapter extends BaseAdapter { 696 private Cursor mCursor; 697 private int mCursorCount; 698 699 private List<Footer> mFooters = Lists.newArrayList(); 700 701 public void swapResult(DirectoryResult result) { 702 mCursor = result != null ? result.cursor : null; 703 mCursorCount = mCursor != null ? mCursor.getCount() : 0; 704 705 mFooters.clear(); 706 707 final Bundle extras = mCursor != null ? mCursor.getExtras() : null; 708 if (extras != null) { 709 final String info = extras.getString(DocumentsContract.EXTRA_INFO); 710 if (info != null) { 711 mFooters.add(new MessageFooter(2, R.drawable.ic_dialog_info, info)); 712 } 713 final String error = extras.getString(DocumentsContract.EXTRA_ERROR); 714 if (error != null) { 715 mFooters.add(new MessageFooter(3, R.drawable.ic_dialog_alert, error)); 716 } 717 if (extras.getBoolean(DocumentsContract.EXTRA_LOADING, false)) { 718 mFooters.add(new LoadingFooter()); 719 } 720 } 721 722 if (result != null && result.exception != null) { 723 mFooters.add(new MessageFooter( 724 3, R.drawable.ic_dialog_alert, getString(R.string.query_error))); 725 } 726 727 if (isEmpty()) { 728 mEmptyView.setVisibility(View.VISIBLE); 729 } else { 730 mEmptyView.setVisibility(View.GONE); 731 } 732 733 notifyDataSetChanged(); 734 } 735 736 @Override 737 public View getView(int position, View convertView, ViewGroup parent) { 738 if (position < mCursorCount) { 739 return getDocumentView(position, convertView, parent); 740 } else { 741 position -= mCursorCount; 742 convertView = mFooters.get(position).getView(convertView, parent); 743 // Only the view itself is disabled; contents inside shouldn't 744 // be dimmed. 745 convertView.setEnabled(false); 746 return convertView; 747 } 748 } 749 750 private View getDocumentView(int position, View convertView, ViewGroup parent) { 751 final Context context = parent.getContext(); 752 final State state = getDisplayState(DirectoryFragment.this); 753 754 final DocumentInfo doc = getArguments().getParcelable(EXTRA_DOC); 755 756 final RootsCache roots = DocumentsApplication.getRootsCache(context); 757 final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( 758 context, mThumbSize); 759 760 if (convertView == null) { 761 final LayoutInflater inflater = LayoutInflater.from(context); 762 if (state.derivedMode == MODE_LIST) { 763 convertView = inflater.inflate(R.layout.item_doc_list, parent, false); 764 } else if (state.derivedMode == MODE_GRID) { 765 convertView = inflater.inflate(R.layout.item_doc_grid, parent, false); 766 } else { 767 throw new IllegalStateException(); 768 } 769 } 770 771 final Cursor cursor = getItem(position); 772 773 final String docAuthority = getCursorString(cursor, RootCursorWrapper.COLUMN_AUTHORITY); 774 final String docRootId = getCursorString(cursor, RootCursorWrapper.COLUMN_ROOT_ID); 775 final String docId = getCursorString(cursor, Document.COLUMN_DOCUMENT_ID); 776 final String docMimeType = getCursorString(cursor, Document.COLUMN_MIME_TYPE); 777 final String docDisplayName = getCursorString(cursor, Document.COLUMN_DISPLAY_NAME); 778 final long docLastModified = getCursorLong(cursor, Document.COLUMN_LAST_MODIFIED); 779 final int docIcon = getCursorInt(cursor, Document.COLUMN_ICON); 780 final int docFlags = getCursorInt(cursor, Document.COLUMN_FLAGS); 781 final String docSummary = getCursorString(cursor, Document.COLUMN_SUMMARY); 782 final long docSize = getCursorLong(cursor, Document.COLUMN_SIZE); 783 784 final View line1 = convertView.findViewById(R.id.line1); 785 final View line2 = convertView.findViewById(R.id.line2); 786 787 final ImageView iconMime = (ImageView) convertView.findViewById(R.id.icon_mime); 788 final ImageView iconThumb = (ImageView) convertView.findViewById(R.id.icon_thumb); 789 final TextView title = (TextView) convertView.findViewById(android.R.id.title); 790 final ImageView icon1 = (ImageView) convertView.findViewById(android.R.id.icon1); 791 final ImageView icon2 = (ImageView) convertView.findViewById(android.R.id.icon2); 792 final TextView summary = (TextView) convertView.findViewById(android.R.id.summary); 793 final TextView date = (TextView) convertView.findViewById(R.id.date); 794 final TextView size = (TextView) convertView.findViewById(R.id.size); 795 796 final ThumbnailAsyncTask oldTask = (ThumbnailAsyncTask) iconThumb.getTag(); 797 if (oldTask != null) { 798 oldTask.preempt(); 799 iconThumb.setTag(null); 800 } 801 802 iconMime.animate().cancel(); 803 iconThumb.animate().cancel(); 804 805 final boolean supportsThumbnail = (docFlags & Document.FLAG_SUPPORTS_THUMBNAIL) != 0; 806 final boolean allowThumbnail = (state.derivedMode == MODE_GRID) 807 || MimePredicate.mimeMatches(MimePredicate.VISUAL_MIMES, docMimeType); 808 final boolean showThumbnail = supportsThumbnail && allowThumbnail && !mSvelteRecents; 809 810 final boolean enabled = isDocumentEnabled(docMimeType, docFlags); 811 final float iconAlpha = (state.derivedMode == MODE_LIST && !enabled) ? 0.5f : 1f; 812 813 boolean cacheHit = false; 814 if (showThumbnail) { 815 final Uri uri = DocumentsContract.buildDocumentUri(docAuthority, docId); 816 final Bitmap cachedResult = thumbs.get(uri); 817 if (cachedResult != null) { 818 iconThumb.setImageBitmap(cachedResult); 819 cacheHit = true; 820 } else { 821 iconThumb.setImageDrawable(null); 822 final ThumbnailAsyncTask task = new ThumbnailAsyncTask( 823 uri, iconMime, iconThumb, mThumbSize, iconAlpha); 824 iconThumb.setTag(task); 825 ProviderExecutor.forAuthority(docAuthority).execute(task); 826 } 827 } 828 829 // Always throw MIME icon into place, even when a thumbnail is being 830 // loaded in background. 831 if (cacheHit) { 832 iconMime.setAlpha(0f); 833 iconMime.setImageDrawable(null); 834 iconThumb.setAlpha(1f); 835 } else { 836 iconMime.setAlpha(1f); 837 iconThumb.setAlpha(0f); 838 iconThumb.setImageDrawable(null); 839 if (docIcon != 0) { 840 iconMime.setImageDrawable( 841 IconUtils.loadPackageIcon(context, docAuthority, docIcon)); 842 } else { 843 iconMime.setImageDrawable(IconUtils.loadMimeIcon( 844 context, docMimeType, docAuthority, docId, state.derivedMode)); 845 } 846 } 847 848 boolean hasLine1 = false; 849 boolean hasLine2 = false; 850 851 final boolean hideTitle = (state.derivedMode == MODE_GRID) && mHideGridTitles; 852 if (!hideTitle) { 853 title.setText(docDisplayName); 854 hasLine1 = true; 855 } 856 857 Drawable iconDrawable = null; 858 if (mType == TYPE_RECENT_OPEN) { 859 // We've already had to enumerate roots before any results can 860 // be shown, so this will never block. 861 final RootInfo root = roots.getRootBlocking(docAuthority, docRootId); 862 if (state.derivedMode == MODE_GRID) { 863 iconDrawable = root.loadGridIcon(context); 864 } else { 865 iconDrawable = root.loadIcon(context); 866 } 867 868 if (summary != null) { 869 final boolean alwaysShowSummary = getResources() 870 .getBoolean(R.bool.always_show_summary); 871 if (alwaysShowSummary) { 872 summary.setText(root.getDirectoryString()); 873 summary.setVisibility(View.VISIBLE); 874 hasLine2 = true; 875 } else { 876 if (iconDrawable != null && roots.isIconUniqueBlocking(root)) { 877 // No summary needed if icon speaks for itself 878 summary.setVisibility(View.INVISIBLE); 879 } else { 880 summary.setText(root.getDirectoryString()); 881 summary.setVisibility(View.VISIBLE); 882 summary.setTextAlignment(TextView.TEXT_ALIGNMENT_TEXT_END); 883 hasLine2 = true; 884 } 885 } 886 } 887 } else { 888 // Directories showing thumbnails in grid mode get a little icon 889 // hint to remind user they're a directory. 890 if (Document.MIME_TYPE_DIR.equals(docMimeType) && state.derivedMode == MODE_GRID 891 && showThumbnail) { 892 iconDrawable = IconUtils.applyTintAttr(context, R.drawable.ic_doc_folder, 893 android.R.attr.textColorPrimaryInverse); 894 } 895 896 if (summary != null) { 897 if (docSummary != null) { 898 summary.setText(docSummary); 899 summary.setVisibility(View.VISIBLE); 900 hasLine2 = true; 901 } else { 902 summary.setVisibility(View.INVISIBLE); 903 } 904 } 905 } 906 907 if (icon1 != null) icon1.setVisibility(View.GONE); 908 if (icon2 != null) icon2.setVisibility(View.GONE); 909 910 if (iconDrawable != null) { 911 if (hasLine1) { 912 icon1.setVisibility(View.VISIBLE); 913 icon1.setImageDrawable(iconDrawable); 914 } else { 915 icon2.setVisibility(View.VISIBLE); 916 icon2.setImageDrawable(iconDrawable); 917 } 918 } 919 920 if (docLastModified == -1) { 921 date.setText(null); 922 } else { 923 date.setText(formatTime(context, docLastModified)); 924 hasLine2 = true; 925 } 926 927 if (state.showSize) { 928 size.setVisibility(View.VISIBLE); 929 if (Document.MIME_TYPE_DIR.equals(docMimeType) || docSize == -1) { 930 size.setText(null); 931 } else { 932 size.setText(Formatter.formatFileSize(context, docSize)); 933 hasLine2 = true; 934 } 935 } else { 936 size.setVisibility(View.GONE); 937 } 938 939 if (line1 != null) { 940 line1.setVisibility(hasLine1 ? View.VISIBLE : View.GONE); 941 } 942 if (line2 != null) { 943 line2.setVisibility(hasLine2 ? View.VISIBLE : View.GONE); 944 } 945 946 setEnabledRecursive(convertView, enabled); 947 948 iconMime.setAlpha(iconAlpha); 949 iconThumb.setAlpha(iconAlpha); 950 if (icon1 != null) icon1.setAlpha(iconAlpha); 951 if (icon2 != null) icon2.setAlpha(iconAlpha); 952 953 return convertView; 954 } 955 956 @Override 957 public int getCount() { 958 return mCursorCount + mFooters.size(); 959 } 960 961 @Override 962 public Cursor getItem(int position) { 963 if (position < mCursorCount) { 964 mCursor.moveToPosition(position); 965 return mCursor; 966 } else { 967 return null; 968 } 969 } 970 971 @Override 972 public long getItemId(int position) { 973 return position; 974 } 975 976 @Override 977 public int getViewTypeCount() { 978 return 4; 979 } 980 981 @Override 982 public int getItemViewType(int position) { 983 if (position < mCursorCount) { 984 return 0; 985 } else { 986 position -= mCursorCount; 987 return mFooters.get(position).getItemViewType(); 988 } 989 } 990 } 991 992 private static class ThumbnailAsyncTask extends AsyncTask<Uri, Void, Bitmap> 993 implements Preemptable { 994 private final Uri mUri; 995 private final ImageView mIconMime; 996 private final ImageView mIconThumb; 997 private final Point mThumbSize; 998 private final float mTargetAlpha; 999 private final CancellationSignal mSignal; 1000 1001 public ThumbnailAsyncTask(Uri uri, ImageView iconMime, ImageView iconThumb, Point thumbSize, 1002 float targetAlpha) { 1003 mUri = uri; 1004 mIconMime = iconMime; 1005 mIconThumb = iconThumb; 1006 mThumbSize = thumbSize; 1007 mTargetAlpha = targetAlpha; 1008 mSignal = new CancellationSignal(); 1009 } 1010 1011 @Override 1012 public void preempt() { 1013 cancel(false); 1014 mSignal.cancel(); 1015 } 1016 1017 @Override 1018 protected Bitmap doInBackground(Uri... params) { 1019 if (isCancelled()) return null; 1020 1021 final Context context = mIconThumb.getContext(); 1022 final ContentResolver resolver = context.getContentResolver(); 1023 1024 ContentProviderClient client = null; 1025 Bitmap result = null; 1026 try { 1027 client = DocumentsApplication.acquireUnstableProviderOrThrow( 1028 resolver, mUri.getAuthority()); 1029 result = DocumentsContract.getDocumentThumbnail(client, mUri, mThumbSize, mSignal); 1030 if (result != null) { 1031 final ThumbnailCache thumbs = DocumentsApplication.getThumbnailsCache( 1032 context, mThumbSize); 1033 thumbs.put(mUri, result); 1034 } 1035 } catch (Exception e) { 1036 if (!(e instanceof OperationCanceledException)) { 1037 Log.w(TAG, "Failed to load thumbnail for " + mUri + ": " + e); 1038 } 1039 } finally { 1040 ContentProviderClient.releaseQuietly(client); 1041 } 1042 return result; 1043 } 1044 1045 @Override 1046 protected void onPostExecute(Bitmap result) { 1047 if (mIconThumb.getTag() == this && result != null) { 1048 mIconThumb.setTag(null); 1049 mIconThumb.setImageBitmap(result); 1050 1051 mIconMime.setAlpha(mTargetAlpha); 1052 mIconMime.animate().alpha(0f).start(); 1053 mIconThumb.setAlpha(0f); 1054 mIconThumb.animate().alpha(mTargetAlpha).start(); 1055 } 1056 } 1057 } 1058 1059 private static String formatTime(Context context, long when) { 1060 // TODO: DateUtils should make this easier 1061 Time then = new Time(); 1062 then.set(when); 1063 Time now = new Time(); 1064 now.setToNow(); 1065 1066 int flags = DateUtils.FORMAT_NO_NOON | DateUtils.FORMAT_NO_MIDNIGHT 1067 | DateUtils.FORMAT_ABBREV_ALL; 1068 1069 if (then.year != now.year) { 1070 flags |= DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_DATE; 1071 } else if (then.yearDay != now.yearDay) { 1072 flags |= DateUtils.FORMAT_SHOW_DATE; 1073 } else { 1074 flags |= DateUtils.FORMAT_SHOW_TIME; 1075 } 1076 1077 return DateUtils.formatDateTime(context, when, flags); 1078 } 1079 1080 private String findCommonMimeType(List<String> mimeTypes) { 1081 String[] commonType = mimeTypes.get(0).split("/"); 1082 if (commonType.length != 2) { 1083 return "*/*"; 1084 } 1085 1086 for (int i = 1; i < mimeTypes.size(); i++) { 1087 String[] type = mimeTypes.get(i).split("/"); 1088 if (type.length != 2) continue; 1089 1090 if (!commonType[1].equals(type[1])) { 1091 commonType[1] = "*"; 1092 } 1093 1094 if (!commonType[0].equals(type[0])) { 1095 commonType[0] = "*"; 1096 commonType[1] = "*"; 1097 break; 1098 } 1099 } 1100 1101 return commonType[0] + "/" + commonType[1]; 1102 } 1103 1104 private void setEnabledRecursive(View v, boolean enabled) { 1105 if (v == null) return; 1106 if (v.isEnabled() == enabled) return; 1107 v.setEnabled(enabled); 1108 1109 if (v instanceof ViewGroup) { 1110 final ViewGroup vg = (ViewGroup) v; 1111 for (int i = vg.getChildCount() - 1; i >= 0; i--) { 1112 setEnabledRecursive(vg.getChildAt(i), enabled); 1113 } 1114 } 1115 } 1116 1117 private boolean isDocumentEnabled(String docMimeType, int docFlags) { 1118 final State state = getDisplayState(DirectoryFragment.this); 1119 1120 // Directories are always enabled 1121 if (Document.MIME_TYPE_DIR.equals(docMimeType)) { 1122 return true; 1123 } 1124 1125 // Read-only files are disabled when creating 1126 if (state.action == ACTION_CREATE && (docFlags & Document.FLAG_SUPPORTS_WRITE) == 0) { 1127 return false; 1128 } 1129 1130 return MimePredicate.mimeMatches(state.acceptMimes, docMimeType); 1131 } 1132 } 1133
