16b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang/* 26b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * Copyright (C) 2012 The Android Open Source Project 36b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * 46b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * Licensed under the Apache License, Version 2.0 (the "License"); 56b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * you may not use this file except in compliance with the License. 66b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * You may obtain a copy of the License at 76b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * 86b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * http://www.apache.org/licenses/LICENSE-2.0 96b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * 106b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * Unless required by applicable law or agreed to in writing, software 116b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * distributed under the License is distributed on an "AS IS" BASIS, 126b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 136b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * See the License for the specific language governing permissions and 146b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang * limitations under the License. 156b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang */ 166b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 176b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Changpackage com.android.gallery3d.data; 186b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 196b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Changimport java.util.ArrayList; 206b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 216118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang// FilterDeleteSet filters a base MediaSet to remove some deletion items (we 226118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang// expect the number to be small). The user can use the following methods to 236118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang// add/remove deletion items: 246b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang// 256118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang// void addDeletion(Path path, int index); 266118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang// void removeDelection(Path path); 276118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang// void clearDeletion(); 28c370476adcf29f311ceec70a119792a0168781e9Chih-Chung Chang// int getNumberOfDeletions(); 296b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang// 30705dc819661cb8c8e839a04577b0641bd6caad53John Reckpublic class FilterDeleteSet extends MediaSet implements ContentListener { 317817979db0c52ffeacb951625b1e821eba303285Ahbong Chang @SuppressWarnings("unused") 326b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang private static final String TAG = "FilterDeleteSet"; 336b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 346118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private static final int REQUEST_ADD = 1; 356118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private static final int REQUEST_REMOVE = 2; 366118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private static final int REQUEST_CLEAR = 3; 376118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 386118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private static class Request { 396118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int type; // one of the REQUEST_* constants 406118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Path path; 416118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int indexHint; 426118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang public Request(int type, Path path, int indexHint) { 436118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang this.type = type; 446118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang this.path = path; 456118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang this.indexHint = indexHint; 466118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 476118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 486118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 496118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private static class Deletion { 506118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Path path; 516118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int index; 526118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang public Deletion(Path path, int index) { 536118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang this.path = path; 546118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang this.index = index; 556118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 566118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 576118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 586118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // The underlying MediaSet 596b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang private final MediaSet mBaseSet; 606b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 616118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Pending Requests 626118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private ArrayList<Request> mRequests = new ArrayList<Request>(); 636118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 646118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Deletions currently in effect, ordered by index 656118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private ArrayList<Deletion> mCurrent = new ArrayList<Deletion>(); 666b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 676b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang public FilterDeleteSet(Path path, MediaSet baseSet) { 68705dc819661cb8c8e839a04577b0641bd6caad53John Reck super(path, INVALID_DATA_VERSION); 696b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang mBaseSet = baseSet; 706b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang mBaseSet.addContentListener(this); 716b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 726b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 736b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang @Override 74a9948ef755f665f1327ef80760df3858f1030454Bobby Georgescu public boolean isCameraRoll() { 75a9948ef755f665f1327ef80760df3858f1030454Bobby Georgescu return mBaseSet.isCameraRoll(); 76a9948ef755f665f1327ef80760df3858f1030454Bobby Georgescu } 77a9948ef755f665f1327ef80760df3858f1030454Bobby Georgescu 78a9948ef755f665f1327ef80760df3858f1030454Bobby Georgescu @Override 796b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang public String getName() { 806b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang return mBaseSet.getName(); 816b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 826b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 836b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang @Override 846b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang public int getMediaItemCount() { 85d87c8624a7ae477a6dea86d63866ade04f8d7e7cBobby Georgescu return mBaseSet.getMediaItemCount() - mCurrent.size(); 866b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 876b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 886118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Gets the MediaItems whose (post-deletion) index are in the range [start, 896118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // start + count). Because we remove some of the MediaItems, the index need 906118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // to be adjusted. 916118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 926118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // For example, if there are 12 items in total. The deleted items are 3, 5, 936118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 10, and the the requested range is [3, 7]: 946118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 956118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // The original index: 0 1 2 3 4 5 6 7 8 9 A B C 966118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // The deleted items: X X X 976118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // The new index: 0 1 2 3 4 5 6 7 8 9 986118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Requested: * * * * * 996118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 1006118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // We need to figure out the [3, 7] actually maps to the original index 4, 1016118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 6, 7, 8, 9. 1026118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 1036118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // We can break the MediaItems into segments, each segment other than the 1046118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // last one ends in a deleted item. The difference between the new index and 1056118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // the original index increases with each segment: 1066118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 1076118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 0 1 2 X (new index = old index) 1086118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 4 X (new index = old index - 1) 1096118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 6 7 8 9 X (new index = old index - 2) 1106118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // B C (new index = old index - 3) 1116118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // 1126b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang @Override 1136b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang public ArrayList<MediaItem> getMediaItem(int start, int count) { 1146118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (count <= 0) return new ArrayList<MediaItem>(); 1156118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 1166118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int end = start + count - 1; 1176118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int n = mCurrent.size(); 1186118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Find the segment that "start" falls into. Count the number of items 1196118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // not yet deleted until it reaches "start". 1206118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int i = 0; 1216118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (i = 0; i < n; i++) { 1226118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Deletion d = mCurrent.get(i); 1236118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (d.index - i > start) break; 1246b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 1256118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Find the segment that "end" falls into. 1266118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int j = i; 1276118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (; j < n; j++) { 1286118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Deletion d = mCurrent.get(j); 1296118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (d.index - j > end) break; 1306118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1316118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 1326118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Now get enough to cover deleted items in [start, end] 1336118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang ArrayList<MediaItem> base = mBaseSet.getMediaItem(start + i, count + (j - i)); 1346118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 1356118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Remove the deleted items. 1366118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (int m = j - 1; m >= i; m--) { 1376118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Deletion d = mCurrent.get(m); 1386118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int k = d.index - (start + i); 1396118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang base.remove(k); 1406b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 1416b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang return base; 1426b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 1436b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 1446118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // We apply the pending requests in the mRequests to construct mCurrent in reload(). 1456b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang @Override 146705dc819661cb8c8e839a04577b0641bd6caad53John Reck public long reload() { 147705dc819661cb8c8e839a04577b0641bd6caad53John Reck boolean newData = mBaseSet.reload() > mDataVersion; 1486118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang synchronized (mRequests) { 149705dc819661cb8c8e839a04577b0641bd6caad53John Reck if (!newData && mRequests.isEmpty()) { 150705dc819661cb8c8e839a04577b0641bd6caad53John Reck return mDataVersion; 151705dc819661cb8c8e839a04577b0641bd6caad53John Reck } 1526118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (int i = 0; i < mRequests.size(); i++) { 1536118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Request r = mRequests.get(i); 1546118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang switch (r.type) { 1556118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang case REQUEST_ADD: { 1566118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Add the path into mCurrent if there is no duplicate. 1576118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int n = mCurrent.size(); 1586118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int j; 1596118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (j = 0; j < n; j++) { 1606118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (mCurrent.get(j).path == r.path) break; 1616118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1626118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (j == n) { 1636118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang mCurrent.add(new Deletion(r.path, r.indexHint)); 1646118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1656118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang break; 1666118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1676118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang case REQUEST_REMOVE: { 1686118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Remove the path from mCurrent. 1696118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int n = mCurrent.size(); 1706118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (int j = 0; j < n; j++) { 1716118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (mCurrent.get(j).path == r.path) { 1726118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang mCurrent.remove(j); 1736118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang break; 1746118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1756118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1766118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang break; 1776118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1786118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang case REQUEST_CLEAR: { 1796118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang mCurrent.clear(); 1806118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang break; 1816118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1826118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1836118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1846118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang mRequests.clear(); 1856118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1866118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 1876118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (!mCurrent.isEmpty()) { 1886118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // See if the elements in mCurrent can be found in the MediaSet. We 1896118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // don't want to search the whole mBaseSet, so we just search a 1906118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // small window that contains the index hints (plus some margin). 1916118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int minIndex = mCurrent.get(0).index; 1926118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int maxIndex = minIndex; 1936118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (int i = 1; i < mCurrent.size(); i++) { 1946118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Deletion d = mCurrent.get(i); 1956118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang minIndex = Math.min(d.index, minIndex); 1966118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang maxIndex = Math.max(d.index, maxIndex); 1976118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 1986118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 1996b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang int n = mBaseSet.getMediaItemCount(); 2006118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int from = Math.max(minIndex - 5, 0); 2016118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang int to = Math.min(maxIndex + 5, n); 2026b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang ArrayList<MediaItem> items = mBaseSet.getMediaItem(from, to - from); 2036118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang ArrayList<Deletion> result = new ArrayList<Deletion>(); 2046b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang for (int i = 0; i < items.size(); i++) { 2056b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang MediaItem item = items.get(i); 2066118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (item == null) continue; 2076118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Path p = item.getPath(); 2086118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang // Find the matching path in mCurrent, if found move it to result 2096118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang for (int j = 0; j < mCurrent.size(); j++) { 2106118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Deletion d = mCurrent.get(j); 2116118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang if (d.path == p) { 2126118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang d.index = from + i; 2136118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang result.add(d); 2146118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang mCurrent.remove(j); 2156118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang break; 2166118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 2176b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 2186b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 2196118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang mCurrent = result; 2206b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 221705dc819661cb8c8e839a04577b0641bd6caad53John Reck 222705dc819661cb8c8e839a04577b0641bd6caad53John Reck mDataVersion = nextVersionNumber(); 223705dc819661cb8c8e839a04577b0641bd6caad53John Reck return mDataVersion; 2246b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 2256b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 2266118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang private void sendRequest(int type, Path path, int indexHint) { 2276118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang Request r = new Request(type, path, indexHint); 2286118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang synchronized (mRequests) { 2296118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang mRequests.add(r); 2306118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 2316118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang notifyContentChanged(); 2326118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 2336118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 2346b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang @Override 2356b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang public void onContentDirty() { 2366b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang notifyContentChanged(); 2376b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 2386b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang 2396118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang public void addDeletion(Path path, int indexHint) { 2406118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang sendRequest(REQUEST_ADD, path, indexHint); 2416118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 2426118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 2436118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang public void removeDeletion(Path path) { 2446118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang sendRequest(REQUEST_REMOVE, path, 0 /* unused */); 2456118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang } 2466118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang 2476118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang public void clearDeletion() { 2486118af9ddad8acc050133154f8f60c842c7f9bfaChih-Chung Chang sendRequest(REQUEST_CLEAR, null /* unused */ , 0 /* unused */); 2496b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang } 250c370476adcf29f311ceec70a119792a0168781e9Chih-Chung Chang 251c370476adcf29f311ceec70a119792a0168781e9Chih-Chung Chang // Returns number of deletions _in effect_ (the number will only gets 252c370476adcf29f311ceec70a119792a0168781e9Chih-Chung Chang // updated after a reload()). 253c370476adcf29f311ceec70a119792a0168781e9Chih-Chung Chang public int getNumberOfDeletions() { 254c370476adcf29f311ceec70a119792a0168781e9Chih-Chung Chang return mCurrent.size(); 255c370476adcf29f311ceec70a119792a0168781e9Chih-Chung Chang } 2566b891c6a3739f8c49d42f9db6fc76cb92c7c5f25Chih-Chung Chang} 257