Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 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 | |
Steve McKay | 98f8c5f | 2017-03-03 13:52:14 -0800 | [diff] [blame] | 19 | import static com.android.documentsui.base.Shared.VERBOSE; |
| 20 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 21 | import android.content.AsyncTaskLoader; |
| 22 | import android.content.ContentProviderClient; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 23 | import android.content.ContentResolver; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 24 | import android.content.Context; |
Steve McKay | 98f8c5f | 2017-03-03 13:52:14 -0800 | [diff] [blame] | 25 | import android.content.res.Resources; |
Ben Lin | 9fea312 | 2016-10-10 18:32:26 -0700 | [diff] [blame] | 26 | import android.database.ContentObserver; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 27 | import android.database.Cursor; |
| 28 | import android.net.Uri; |
Steve McKay | 50b9bae | 2017-01-17 11:12:08 -0800 | [diff] [blame] | 29 | import android.os.Bundle; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 30 | import android.os.CancellationSignal; |
Ben Lin | 9fea312 | 2016-10-10 18:32:26 -0700 | [diff] [blame] | 31 | import android.os.Handler; |
Garfield Tan | e967033 | 2017-03-06 18:33:23 -0800 | [diff] [blame] | 32 | import android.os.Looper; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 33 | import android.os.OperationCanceledException; |
Makoto Onuki | 7777875 | 2015-07-01 14:55:14 -0700 | [diff] [blame] | 34 | import android.os.RemoteException; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 35 | import android.provider.DocumentsContract.Document; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 36 | import android.util.Log; |
| 37 | |
Tomasz Mikolajewski | b19061c | 2017-02-13 17:33:42 +0900 | [diff] [blame] | 38 | import com.android.documentsui.archives.ArchivesProvider; |
Steve McKay | 50b9bae | 2017-01-17 11:12:08 -0800 | [diff] [blame] | 39 | import com.android.documentsui.base.DebugFlags; |
Steve McKay | d080506 | 2016-09-15 14:30:38 -0700 | [diff] [blame] | 40 | import com.android.documentsui.base.DocumentInfo; |
Steve McKay | 710248d | 2017-03-14 10:09:30 -0700 | [diff] [blame] | 41 | import com.android.documentsui.base.Features; |
Steve McKay | d9caa6a | 2016-09-15 16:36:45 -0700 | [diff] [blame] | 42 | import com.android.documentsui.base.FilteringCursorWrapper; |
Steve McKay | d080506 | 2016-09-15 14:30:38 -0700 | [diff] [blame] | 43 | import com.android.documentsui.base.RootInfo; |
Steve McKay | d9caa6a | 2016-09-15 16:36:45 -0700 | [diff] [blame] | 44 | import com.android.documentsui.roots.RootCursorWrapper; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 45 | import com.android.documentsui.sorting.SortModel; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 46 | |
Steve McKay | c88f83c | 2016-08-31 12:01:43 -0700 | [diff] [blame] | 47 | import libcore.io.IoUtils; |
| 48 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 49 | public class DirectoryLoader extends AsyncTaskLoader<DirectoryResult> { |
Jeff Sharkey | 9dd0262 | 2013-09-27 16:44:11 -0700 | [diff] [blame] | 50 | |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 51 | private static final String TAG = "DirectoryLoader"; |
| 52 | |
Jeff Sharkey | 9dd0262 | 2013-09-27 16:44:11 -0700 | [diff] [blame] | 53 | private static final String[] SEARCH_REJECT_MIMES = new String[] { Document.MIME_TYPE_DIR }; |
| 54 | |
Ben Lin | 9fea312 | 2016-10-10 18:32:26 -0700 | [diff] [blame] | 55 | private final LockingContentObserver mObserver; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 56 | private final RootInfo mRoot; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 57 | private final Uri mUri; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 58 | private final SortModel mModel; |
Aga Wronska | af5ace5 | 2016-02-17 13:50:42 -0800 | [diff] [blame] | 59 | private final boolean mSearchMode; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 60 | |
Steve McKay | 7776aa5 | 2016-01-25 19:00:22 -0800 | [diff] [blame] | 61 | private DocumentInfo mDoc; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 62 | private CancellationSignal mSignal; |
| 63 | private DirectoryResult mResult; |
| 64 | |
Steve McKay | 710248d | 2017-03-14 10:09:30 -0700 | [diff] [blame] | 65 | private Features mFeatures; |
| 66 | |
Steve McKay | c88f83c | 2016-08-31 12:01:43 -0700 | [diff] [blame] | 67 | public DirectoryLoader( |
Steve McKay | 710248d | 2017-03-14 10:09:30 -0700 | [diff] [blame] | 68 | Features freatures, |
Steve McKay | c88f83c | 2016-08-31 12:01:43 -0700 | [diff] [blame] | 69 | Context context, |
| 70 | RootInfo root, |
| 71 | DocumentInfo doc, |
| 72 | Uri uri, |
| 73 | SortModel model, |
Ben Lin | 9fea312 | 2016-10-10 18:32:26 -0700 | [diff] [blame] | 74 | DirectoryReloadLock lock, |
Steve McKay | c88f83c | 2016-08-31 12:01:43 -0700 | [diff] [blame] | 75 | boolean inSearchMode) { |
| 76 | |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 77 | super(context, ProviderExecutor.forAuthority(root.authority)); |
Steve McKay | 710248d | 2017-03-14 10:09:30 -0700 | [diff] [blame] | 78 | mFeatures = freatures; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 79 | mRoot = root; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 80 | mUri = uri; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 81 | mModel = model; |
Steve McKay | 7776aa5 | 2016-01-25 19:00:22 -0800 | [diff] [blame] | 82 | mDoc = doc; |
Aga Wronska | af5ace5 | 2016-02-17 13:50:42 -0800 | [diff] [blame] | 83 | mSearchMode = inSearchMode; |
Ben Lin | 9fea312 | 2016-10-10 18:32:26 -0700 | [diff] [blame] | 84 | mObserver = new LockingContentObserver(lock, this::onContentChanged); |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | @Override |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 88 | public final DirectoryResult loadInBackground() { |
| 89 | synchronized (this) { |
| 90 | if (isLoadInBackgroundCanceled()) { |
| 91 | throw new OperationCanceledException(); |
| 92 | } |
| 93 | mSignal = new CancellationSignal(); |
| 94 | } |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 95 | |
| 96 | final ContentResolver resolver = getContext().getContentResolver(); |
Jeff Sharkey | d82b26b | 2013-09-02 15:07:28 -0700 | [diff] [blame] | 97 | final String authority = mUri.getAuthority(); |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 98 | |
| 99 | final DirectoryResult result = new DirectoryResult(); |
Tomasz Mikolajewski | e29e341 | 2016-02-24 12:53:44 +0900 | [diff] [blame] | 100 | result.doc = mDoc; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 101 | |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 102 | ContentProviderClient client = null; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 103 | Cursor cursor; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 104 | try { |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 105 | client = DocumentsApplication.acquireUnstableProviderOrThrow(resolver, authority); |
Tomasz Mikolajewski | b19061c | 2017-02-13 17:33:42 +0900 | [diff] [blame] | 106 | if (mDoc.isInArchive()) { |
| 107 | ArchivesProvider.acquireArchive(client, mUri); |
| 108 | } |
| 109 | result.client = client; |
Steve McKay | 50b9bae | 2017-01-17 11:12:08 -0800 | [diff] [blame] | 110 | |
Steve McKay | 98f8c5f | 2017-03-03 13:52:14 -0800 | [diff] [blame] | 111 | Resources resources = getContext().getResources(); |
Steve McKay | 710248d | 2017-03-14 10:09:30 -0700 | [diff] [blame] | 112 | if (mFeatures.isContentPagingEnabled()) { |
Steve McKay | f208d84 | 2017-02-27 12:57:58 -0800 | [diff] [blame] | 113 | Bundle queryArgs = new Bundle(); |
| 114 | mModel.addQuerySortArgs(queryArgs); |
Steve McKay | 50b9bae | 2017-01-17 11:12:08 -0800 | [diff] [blame] | 115 | |
Steve McKay | f208d84 | 2017-02-27 12:57:58 -0800 | [diff] [blame] | 116 | // TODO: At some point we don't want forced flags to override real paging... |
| 117 | // and that point is when we have real paging. |
| 118 | DebugFlags.addForcedPagingArgs(queryArgs); |
| 119 | |
| 120 | cursor = client.query(mUri, null, queryArgs, mSignal); |
| 121 | } else { |
| 122 | cursor = client.query( |
| 123 | mUri, null, null, null, mModel.getDocumentSortQuery(), mSignal); |
Makoto Onuki | 7777875 | 2015-07-01 14:55:14 -0700 | [diff] [blame] | 124 | } |
| 125 | |
Steve McKay | f208d84 | 2017-02-27 12:57:58 -0800 | [diff] [blame] | 126 | if (cursor == null) { |
| 127 | throw new RemoteException("Provider returned null"); |
Steve McKay | 50b9bae | 2017-01-17 11:12:08 -0800 | [diff] [blame] | 128 | } |
| 129 | |
Jeff Sharkey | 20b3227 | 2013-09-03 15:25:52 -0700 | [diff] [blame] | 130 | cursor.registerContentObserver(mObserver); |
| 131 | |
Jeff Sharkey | a35ac2d | 2013-09-10 12:04:26 -0700 | [diff] [blame] | 132 | cursor = new RootCursorWrapper(mUri.getAuthority(), mRoot.rootId, cursor, -1); |
Jeff Sharkey | d82b26b | 2013-09-02 15:07:28 -0700 | [diff] [blame] | 133 | |
Steve McKay | 710248d | 2017-03-14 10:09:30 -0700 | [diff] [blame] | 134 | if (mSearchMode && !mFeatures.isFoldersInSearchResultsEnabled()) { |
Garfield Tan | b00bbc5 | 2016-11-01 14:23:35 -0700 | [diff] [blame] | 135 | // There is no findDocumentPath API. Enable filtering on folders in search mode. |
Jeff Sharkey | 9dd0262 | 2013-09-27 16:44:11 -0700 | [diff] [blame] | 136 | cursor = new FilteringCursorWrapper(cursor, null, SEARCH_REJECT_MIMES); |
Jeff Sharkey | a35ac2d | 2013-09-10 12:04:26 -0700 | [diff] [blame] | 137 | } |
| 138 | |
Steve McKay | 98f8c5f | 2017-03-03 13:52:14 -0800 | [diff] [blame] | 139 | // TODO: When API tweaks have landed, use ContentResolver.EXTRA_HONORED_ARGS |
| 140 | // instead of checking directly for ContentResolver.QUERY_ARG_SORT_COLUMNS (won't work) |
Steve McKay | 710248d | 2017-03-14 10:09:30 -0700 | [diff] [blame] | 141 | if (mFeatures.isContentPagingEnabled() |
Steve McKay | 98f8c5f | 2017-03-03 13:52:14 -0800 | [diff] [blame] | 142 | && cursor.getExtras().containsKey(ContentResolver.QUERY_ARG_SORT_COLUMNS)) { |
| 143 | if (VERBOSE) Log.d(TAG, "Skipping sort of pre-sorted cursor. Booya!"); |
| 144 | } else { |
| 145 | cursor = mModel.sortCursor(cursor); |
| 146 | } |
Jeff Sharkey | a35ac2d | 2013-09-10 12:04:26 -0700 | [diff] [blame] | 147 | result.cursor = cursor; |
Jeff Sharkey | 1d890e0 | 2013-08-15 11:24:03 -0700 | [diff] [blame] | 148 | } catch (Exception e) { |
Jeff Sharkey | 0e8c871 | 2013-09-12 21:59:06 -0700 | [diff] [blame] | 149 | Log.w(TAG, "Failed to query", e); |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 150 | result.exception = e; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 151 | } finally { |
| 152 | synchronized (this) { |
| 153 | mSignal = null; |
| 154 | } |
Tomasz Mikolajewski | b19061c | 2017-02-13 17:33:42 +0900 | [diff] [blame] | 155 | // TODO: Remove this call. |
Ben Lin | f8f06e9 | 2017-01-27 17:15:48 -0800 | [diff] [blame] | 156 | ContentProviderClient.releaseQuietly(client); |
Jeff Sharkey | 1d890e0 | 2013-08-15 11:24:03 -0700 | [diff] [blame] | 157 | } |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 158 | |
Jeff Sharkey | 46899c8 | 2013-08-18 22:26:48 -0700 | [diff] [blame] | 159 | return result; |
Jeff Sharkey | 1d890e0 | 2013-08-15 11:24:03 -0700 | [diff] [blame] | 160 | } |
| 161 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 162 | @Override |
| 163 | public void cancelLoadInBackground() { |
| 164 | super.cancelLoadInBackground(); |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 165 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 166 | synchronized (this) { |
| 167 | if (mSignal != null) { |
| 168 | mSignal.cancel(); |
Jeff Sharkey | 46899c8 | 2013-08-18 22:26:48 -0700 | [diff] [blame] | 169 | } |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 170 | } |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 171 | } |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 172 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 173 | @Override |
| 174 | public void deliverResult(DirectoryResult result) { |
| 175 | if (isReset()) { |
| 176 | IoUtils.closeQuietly(result); |
| 177 | return; |
| 178 | } |
| 179 | DirectoryResult oldResult = mResult; |
| 180 | mResult = result; |
| 181 | |
| 182 | if (isStarted()) { |
| 183 | super.deliverResult(result); |
| 184 | } |
| 185 | |
| 186 | if (oldResult != null && oldResult != result) { |
| 187 | IoUtils.closeQuietly(oldResult); |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | @Override |
| 192 | protected void onStartLoading() { |
| 193 | if (mResult != null) { |
| 194 | deliverResult(mResult); |
| 195 | } |
| 196 | if (takeContentChanged() || mResult == null) { |
| 197 | forceLoad(); |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | @Override |
| 202 | protected void onStopLoading() { |
| 203 | cancelLoad(); |
| 204 | } |
| 205 | |
| 206 | @Override |
| 207 | public void onCanceled(DirectoryResult result) { |
| 208 | IoUtils.closeQuietly(result); |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | protected void onReset() { |
| 213 | super.onReset(); |
| 214 | |
| 215 | // Ensure the loader is stopped |
| 216 | onStopLoading(); |
| 217 | |
| 218 | IoUtils.closeQuietly(mResult); |
| 219 | mResult = null; |
| 220 | |
| 221 | getContext().getContentResolver().unregisterContentObserver(mObserver); |
| 222 | } |
Ben Lin | 9fea312 | 2016-10-10 18:32:26 -0700 | [diff] [blame] | 223 | |
| 224 | private static final class LockingContentObserver extends ContentObserver { |
| 225 | private final DirectoryReloadLock mLock; |
| 226 | private final Runnable mContentChangedCallback; |
| 227 | |
| 228 | public LockingContentObserver(DirectoryReloadLock lock, Runnable contentChangedCallback) { |
Garfield Tan | e967033 | 2017-03-06 18:33:23 -0800 | [diff] [blame] | 229 | super(new Handler(Looper.getMainLooper())); |
Ben Lin | 9fea312 | 2016-10-10 18:32:26 -0700 | [diff] [blame] | 230 | mLock = lock; |
| 231 | mContentChangedCallback = contentChangedCallback; |
| 232 | } |
| 233 | |
| 234 | @Override |
| 235 | public boolean deliverSelfNotifications() { |
| 236 | return true; |
| 237 | } |
| 238 | |
| 239 | @Override |
| 240 | public void onChange(boolean selfChange) { |
| 241 | mLock.tryUpdate(mContentChangedCallback); |
| 242 | } |
| 243 | } |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 244 | } |