1 /*
2  * Copyright (C) 2022 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 package com.android.quicksearchbox
17 
18 import android.database.DataSetObserver
19 
20 /** A suggestion cursor that delegates all methods to another SuggestionCursor. */
21 open class SuggestionCursorWrapper(userQuery: String?, private val mCursor: SuggestionCursor?) :
22   AbstractSuggestionCursorWrapper(userQuery!!) {
closenull23   override fun close() {
24     if (mCursor != null) {
25       mCursor.close()
26     }
27   }
28 
29   override val count: Int
30     get() = if (mCursor == null) 0 else mCursor.count
31   override val position: Int
32     get() = if (mCursor == null) 0 else mCursor.position
33 
moveTonull34   override fun moveTo(pos: Int) {
35     if (mCursor != null) {
36       mCursor.moveTo(pos)
37     }
38   }
39 
moveToNextnull40   override fun moveToNext(): Boolean {
41     return mCursor?.moveToNext() ?: false
42   }
43 
registerDataSetObservernull44   override fun registerDataSetObserver(observer: DataSetObserver?) {
45     if (mCursor != null) {
46       mCursor.registerDataSetObserver(observer)
47     }
48   }
49 
unregisterDataSetObservernull50   override fun unregisterDataSetObserver(observer: DataSetObserver?) {
51     if (mCursor != null) {
52       mCursor.unregisterDataSetObserver(observer)
53     }
54   }
55 
56   @Override
currentnull57   override fun current(): SuggestionCursor {
58     return mCursor!!
59   }
60 
61   override val extraColumns: Collection<String>?
62     get() = mCursor?.extraColumns
63 }
64