CrossProcessCursor.java revision d2183654e03d589b120467f4e98da1b178ceeadb 
1/*
2 * Copyright (C) 2008 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
17package android.database;
18
19public interface CrossProcessCursor extends Cursor {
20    /**
21     * returns a pre-filled window, return NULL if no such window
22     */
23    CursorWindow getWindow();
24
25    /**
26     * copies cursor data into the window start at pos
27     */
28    void fillWindow(int pos, CursorWindow winow);
29
30    /**
31     * This function is called every time the cursor is successfully scrolled
32     * to a new position, giving the subclass a chance to update any state it
33     * may have. If it returns false the move function will also do so and the
34     * cursor will scroll to the beforeFirst position.
35     *
36     * @param oldPosition the position that we're moving from
37     * @param newPosition the position that we're moving to
38     * @return true if the move is successful, false otherwise
39     */
40    boolean onMove(int oldPosition, int newPosition);
41
42}
43