1 /*
2  * Copyright (C) 2021 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.launcher3.widget.picker;
17 
18 import android.view.ViewGroup;
19 
20 import androidx.recyclerview.widget.RecyclerView.ViewHolder;
21 
22 import com.android.launcher3.recyclerview.ViewHolderBinder;
23 import com.android.launcher3.views.StickyHeaderLayout.EmptySpaceView;
24 import com.android.launcher3.widget.model.WidgetListSpaceEntry;
25 
26 import java.util.List;
27 import java.util.function.IntSupplier;
28 
29 /**
30  * {@link ViewHolderBinder} for binding the top empty space
31  */
32 public class WidgetsSpaceViewHolderBinder
33         implements ViewHolderBinder<WidgetListSpaceEntry, ViewHolder> {
34 
35     private final IntSupplier mEmptySpaceHeightProvider;
36 
WidgetsSpaceViewHolderBinder(IntSupplier emptySpaceHeightProvider)37     public WidgetsSpaceViewHolderBinder(IntSupplier emptySpaceHeightProvider) {
38         mEmptySpaceHeightProvider = emptySpaceHeightProvider;
39     }
40 
41     @Override
newViewHolder(ViewGroup parent)42     public ViewHolder newViewHolder(ViewGroup parent) {
43         return new ViewHolder(new EmptySpaceView(parent.getContext())) { };
44     }
45 
46     @Override
bindViewHolder(ViewHolder holder, WidgetListSpaceEntry data, @ListPosition int position, List<Object> payloads)47     public void bindViewHolder(ViewHolder holder, WidgetListSpaceEntry data,
48             @ListPosition int position, List<Object> payloads) {
49         ((EmptySpaceView) holder.itemView).setFixedHeight(mEmptySpaceHeightProvider.getAsInt());
50     }
51 }
52