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 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 19 | import android.content.AsyncTaskLoader; |
| 20 | import android.content.ContentProviderClient; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 21 | import android.content.ContentResolver; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 22 | import android.content.Context; |
| 23 | import android.database.Cursor; |
| 24 | import android.net.Uri; |
| 25 | import android.os.CancellationSignal; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 26 | import android.os.OperationCanceledException; |
Makoto Onuki | 7777875 | 2015-07-01 14:55:14 -0700 | [diff] [blame] | 27 | import android.os.RemoteException; |
Jeff Sharkey | 0e8c871 | 2013-09-12 21:59:06 -0700 | [diff] [blame] | 28 | import android.provider.DocumentsContract; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 29 | import android.provider.DocumentsContract.Document; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 30 | import android.util.Log; |
| 31 | |
Steve McKay | d080506 | 2016-09-15 14:30:38 -0700 | [diff] [blame] | 32 | import com.android.documentsui.base.DocumentInfo; |
Steve McKay | d9caa6a | 2016-09-15 16:36:45 -0700 | [diff] [blame] | 33 | import com.android.documentsui.base.FilteringCursorWrapper; |
Steve McKay | d080506 | 2016-09-15 14:30:38 -0700 | [diff] [blame] | 34 | import com.android.documentsui.base.RootInfo; |
Steve McKay | d9caa6a | 2016-09-15 16:36:45 -0700 | [diff] [blame] | 35 | import com.android.documentsui.roots.RootCursorWrapper; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 36 | import com.android.documentsui.sorting.SortModel; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 37 | |
Jeff Sharkey | 0e8c871 | 2013-09-12 21:59:06 -0700 | [diff] [blame] | 38 | import java.io.FileNotFoundException; |
| 39 | |
Steve McKay | c88f83c | 2016-08-31 12:01:43 -0700 | [diff] [blame] | 40 | import libcore.io.IoUtils; |
| 41 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 42 | public class DirectoryLoader extends AsyncTaskLoader<DirectoryResult> { |
Jeff Sharkey | 9dd0262 | 2013-09-27 16:44:11 -0700 | [diff] [blame] | 43 | |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 44 | private static final String TAG = "DirectoryLoader"; |
| 45 | |
Jeff Sharkey | 9dd0262 | 2013-09-27 16:44:11 -0700 | [diff] [blame] | 46 | private static final String[] SEARCH_REJECT_MIMES = new String[] { Document.MIME_TYPE_DIR }; |
| 47 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 48 | private final ForceLoadContentObserver mObserver = new ForceLoadContentObserver(); |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 49 | |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 50 | private final RootInfo mRoot; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 51 | private final Uri mUri; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 52 | private final SortModel mModel; |
Aga Wronska | af5ace5 | 2016-02-17 13:50:42 -0800 | [diff] [blame] | 53 | private final boolean mSearchMode; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 54 | |
Steve McKay | 7776aa5 | 2016-01-25 19:00:22 -0800 | [diff] [blame] | 55 | private DocumentInfo mDoc; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 56 | private CancellationSignal mSignal; |
| 57 | private DirectoryResult mResult; |
| 58 | |
Steve McKay | c88f83c | 2016-08-31 12:01:43 -0700 | [diff] [blame] | 59 | public DirectoryLoader( |
| 60 | Context context, |
| 61 | RootInfo root, |
| 62 | DocumentInfo doc, |
| 63 | Uri uri, |
| 64 | SortModel model, |
| 65 | boolean inSearchMode) { |
| 66 | |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 67 | super(context, ProviderExecutor.forAuthority(root.authority)); |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 68 | mRoot = root; |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 69 | mUri = uri; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 70 | mModel = model; |
Steve McKay | 7776aa5 | 2016-01-25 19:00:22 -0800 | [diff] [blame] | 71 | mDoc = doc; |
Aga Wronska | af5ace5 | 2016-02-17 13:50:42 -0800 | [diff] [blame] | 72 | mSearchMode = inSearchMode; |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | @Override |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 76 | public final DirectoryResult loadInBackground() { |
| 77 | synchronized (this) { |
| 78 | if (isLoadInBackgroundCanceled()) { |
| 79 | throw new OperationCanceledException(); |
| 80 | } |
| 81 | mSignal = new CancellationSignal(); |
| 82 | } |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 83 | |
| 84 | final ContentResolver resolver = getContext().getContentResolver(); |
Jeff Sharkey | d82b26b | 2013-09-02 15:07:28 -0700 | [diff] [blame] | 85 | final String authority = mUri.getAuthority(); |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 86 | |
| 87 | final DirectoryResult result = new DirectoryResult(); |
Tomasz Mikolajewski | e29e341 | 2016-02-24 12:53:44 +0900 | [diff] [blame] | 88 | result.doc = mDoc; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 89 | result.sortModel = mModel; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 90 | |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 91 | ContentProviderClient client = null; |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 92 | Cursor cursor; |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 93 | try { |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 94 | client = DocumentsApplication.acquireUnstableProviderOrThrow(resolver, authority); |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 95 | cursor = client.query( |
Garfield, Tan | 11d2348 | 2016-08-05 09:33:29 -0700 | [diff] [blame] | 96 | mUri, null, null, null, mModel.getDocumentSortQuery(), mSignal); |
Makoto Onuki | 7777875 | 2015-07-01 14:55:14 -0700 | [diff] [blame] | 97 | if (cursor == null) { |
| 98 | throw new RemoteException("Provider returned null"); |
| 99 | } |
| 100 | |
Jeff Sharkey | 20b3227 | 2013-09-03 15:25:52 -0700 | [diff] [blame] | 101 | cursor.registerContentObserver(mObserver); |
| 102 | |
Jeff Sharkey | a35ac2d | 2013-09-10 12:04:26 -0700 | [diff] [blame] | 103 | cursor = new RootCursorWrapper(mUri.getAuthority(), mRoot.rootId, cursor, -1); |
Jeff Sharkey | d82b26b | 2013-09-02 15:07:28 -0700 | [diff] [blame] | 104 | |
Aga Wronska | af5ace5 | 2016-02-17 13:50:42 -0800 | [diff] [blame] | 105 | if (mSearchMode) { |
Jeff Sharkey | a35ac2d | 2013-09-10 12:04:26 -0700 | [diff] [blame] | 106 | // Filter directories out of search results, for now |
Jeff Sharkey | 9dd0262 | 2013-09-27 16:44:11 -0700 | [diff] [blame] | 107 | cursor = new FilteringCursorWrapper(cursor, null, SEARCH_REJECT_MIMES); |
Jeff Sharkey | a35ac2d | 2013-09-10 12:04:26 -0700 | [diff] [blame] | 108 | } |
| 109 | |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 110 | result.client = client; |
Jeff Sharkey | a35ac2d | 2013-09-10 12:04:26 -0700 | [diff] [blame] | 111 | result.cursor = cursor; |
Jeff Sharkey | 1d890e0 | 2013-08-15 11:24:03 -0700 | [diff] [blame] | 112 | } catch (Exception e) { |
Jeff Sharkey | 0e8c871 | 2013-09-12 21:59:06 -0700 | [diff] [blame] | 113 | Log.w(TAG, "Failed to query", e); |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 114 | result.exception = e; |
Jeff Sharkey | f63b777 | 2013-10-01 17:57:41 -0700 | [diff] [blame] | 115 | ContentProviderClient.releaseQuietly(client); |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 116 | } finally { |
| 117 | synchronized (this) { |
| 118 | mSignal = null; |
| 119 | } |
Jeff Sharkey | 1d890e0 | 2013-08-15 11:24:03 -0700 | [diff] [blame] | 120 | } |
Jeff Sharkey | a4d1f22 | 2013-09-07 14:45:03 -0700 | [diff] [blame] | 121 | |
Jeff Sharkey | 46899c8 | 2013-08-18 22:26:48 -0700 | [diff] [blame] | 122 | return result; |
Jeff Sharkey | 1d890e0 | 2013-08-15 11:24:03 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 125 | @Override |
| 126 | public void cancelLoadInBackground() { |
| 127 | super.cancelLoadInBackground(); |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 128 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 129 | synchronized (this) { |
| 130 | if (mSignal != null) { |
| 131 | mSignal.cancel(); |
Jeff Sharkey | 46899c8 | 2013-08-18 22:26:48 -0700 | [diff] [blame] | 132 | } |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 133 | } |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 134 | } |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 135 | |
Jeff Sharkey | ac9e627 | 2013-08-31 21:27:44 -0700 | [diff] [blame] | 136 | @Override |
| 137 | public void deliverResult(DirectoryResult result) { |
| 138 | if (isReset()) { |
| 139 | IoUtils.closeQuietly(result); |
| 140 | return; |
| 141 | } |
| 142 | DirectoryResult oldResult = mResult; |
| 143 | mResult = result; |
| 144 | |
| 145 | if (isStarted()) { |
| 146 | super.deliverResult(result); |
| 147 | } |
| 148 | |
| 149 | if (oldResult != null && oldResult != result) { |
| 150 | IoUtils.closeQuietly(oldResult); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | @Override |
| 155 | protected void onStartLoading() { |
| 156 | if (mResult != null) { |
| 157 | deliverResult(mResult); |
| 158 | } |
| 159 | if (takeContentChanged() || mResult == null) { |
| 160 | forceLoad(); |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | @Override |
| 165 | protected void onStopLoading() { |
| 166 | cancelLoad(); |
| 167 | } |
| 168 | |
| 169 | @Override |
| 170 | public void onCanceled(DirectoryResult result) { |
| 171 | IoUtils.closeQuietly(result); |
| 172 | } |
| 173 | |
| 174 | @Override |
| 175 | protected void onReset() { |
| 176 | super.onReset(); |
| 177 | |
| 178 | // Ensure the loader is stopped |
| 179 | onStopLoading(); |
| 180 | |
| 181 | IoUtils.closeQuietly(mResult); |
| 182 | mResult = null; |
| 183 | |
| 184 | getContext().getContentResolver().unregisterContentObserver(mObserver); |
| 185 | } |
Jeff Sharkey | a5defe3 | 2013-08-05 17:56:48 -0700 | [diff] [blame] | 186 | } |