| /* |
| * Copyright (C) 2009 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.cooliris.media; |
| |
| import java.util.ArrayList; |
| |
| public interface DataSource { |
| // Load the sets to be displayed. |
| void loadMediaSets(final MediaFeed feed); |
| |
| // rangeStart->rangeEnd is inclusive |
| // Pass in Shared.INFINITY for the rangeEnd to load all items. |
| void loadItemsForSet(final MediaFeed feed, final MediaSet parentSet, int rangeStart, int rangeEnd); |
| |
| // Called when the data source will no longer be used. |
| void shutdown(); |
| |
| boolean performOperation(int operation, ArrayList<MediaBucket> mediaBuckets, Object data); |
| |
| DiskCache getThumbnailCache(); |
| |
| // This method is called so that we can setup listeners for any databases that the datasource uses |
| String[] getDatabaseUris(); |
| |
| // Called when the user explicitly requests a refresh, or when the application is brought to the foreground. |
| // Alternatively, when one or more of the database's data changes, this method will be called. |
| void refresh(final MediaFeed feed, final String[] databaseUris); |
| |
| } |