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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.documentsui;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.DocumentsContract;
import android.provider.DocumentsContract.Document;
import android.text.format.DateUtils;
import com.android.documentsui.base.Lookup;
import com.android.documentsui.base.RootInfo;
import com.android.documentsui.base.State;
import com.android.documentsui.base.UserId;
import com.android.documentsui.roots.ProvidersAccess;
import com.android.documentsui.roots.RootCursorWrapper;
import java.util.List;
import java.util.concurrent.Executor;
public class RecentsLoader extends MultiRootDocumentsLoader {
private static final String TAG = "RecentsLoader";
/** Ignore documents older than this age. */
public static final long REJECT_OLDER_THAN = 45 * DateUtils.DAY_IN_MILLIS;
/** MIME types that should always be excluded from the Recents view. */
private static final String[] REJECT_MIMES = new String[]{Document.MIME_TYPE_DIR};
/** Maximum documents from a single root. */
public static final int MAX_DOCS_FROM_ROOT = 64;
private final UserId mUserId;
public RecentsLoader(Context context, ProvidersAccess providers, State state,
Lookup<String, Executor> executors, Lookup<String, String> fileTypeMap, UserId userId) {
super(context, providers, state, executors, fileTypeMap);
mUserId = userId;
}
@Override
public DirectoryResult loadInBackground() {
if (!mState.canInteractWith(mUserId)) {
DirectoryResult result = new DirectoryResult();
result.exception = new CrossProfileNoPermissionException();
return result;
} else if (mUserId.isQuietModeEnabled(getContext())) {
DirectoryResult result = new DirectoryResult();
result.exception = new CrossProfileQuietModeException(mUserId);
return result;
}
return super.loadInBackground();
}
@Override
protected long getRejectBeforeTime() {
return System.currentTimeMillis() - REJECT_OLDER_THAN;
}
@Override
protected String[] getRejectMimes() {
return REJECT_MIMES;
}
@Override
protected boolean shouldIgnoreRoot(RootInfo root) {
// only query the root is local only, support recents, and is from the selected user.
return !root.isLocalOnly() || !root.supportsRecents() || !mUserId.equals(root.userId);
}
@Override
protected QueryTask getQueryTask(String authority, List<RootInfo> rootInfos) {
return new RecentsTask(authority, rootInfos);
}
private class RecentsTask extends QueryTask {
public RecentsTask(String authority, List<RootInfo> rootInfos) {
super(authority, rootInfos);
}
@Override
protected Uri getQueryUri(RootInfo rootInfo) {
return DocumentsContract.buildRecentDocumentsUri(authority, rootInfo.rootId);
}
@Override
protected RootCursorWrapper generateResultCursor(RootInfo rootInfo, Cursor oriCursor) {
return new RootCursorWrapper(rootInfo.userId, authority, rootInfo.rootId, oriCursor,
MAX_DOCS_FROM_ROOT);
}
}
}
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