1/*
2 * Copyright (C) 2010 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 com.android.quicksearchbox;
18
19import android.database.DataSetObserver;
20
21import java.util.Collection;
22
23/**
24 * A suggestion cursor that delegates all methods to another SuggestionCursor.
25 */
26public class SuggestionCursorWrapper extends AbstractSuggestionCursorWrapper {
27
28    private final SuggestionCursor mCursor;
29
30    public SuggestionCursorWrapper(String userQuery, SuggestionCursor cursor) {
31        super(userQuery);
32        mCursor = cursor;
33    }
34
35    public void close() {
36        if (mCursor != null) {
37            mCursor.close();
38        }
39    }
40
41    public int getCount() {
42        return mCursor == null ? 0 : mCursor.getCount();
43    }
44
45    public int getPosition() {
46        return mCursor == null ? 0 : mCursor.getPosition();
47    }
48
49    public void moveTo(int pos) {
50        if (mCursor != null) {
51            mCursor.moveTo(pos);
52        }
53    }
54
55    public boolean moveToNext() {
56        if (mCursor != null) {
57            return mCursor.moveToNext();
58        } else {
59            return false;
60        }
61    }
62
63    public void registerDataSetObserver(DataSetObserver observer) {
64        if (mCursor != null) {
65            mCursor.registerDataSetObserver(observer);
66        }
67    }
68
69    public void unregisterDataSetObserver(DataSetObserver observer) {
70        if (mCursor != null) {
71            mCursor.unregisterDataSetObserver(observer);
72        }
73    }
74
75    @Override
76    protected SuggestionCursor current() {
77        return mCursor;
78    }
79
80    public Collection<String> getExtraColumns() {
81        return mCursor.getExtraColumns();
82    }
83
84}
85