1 /*
2  * Copyright (C) 2017 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.views;
17 
18 import android.content.Context;
19 import android.util.AttributeSet;
20 import android.view.View;
21 import android.widget.RelativeLayout;
22 
23 /**
24  * Container to show work footer in all-apps.
25  */
26 public class WorkFooterContainer extends RelativeLayout {
27 
WorkFooterContainer(Context context)28     public WorkFooterContainer(Context context) {
29         super(context);
30     }
31 
WorkFooterContainer(Context context, AttributeSet attrs)32     public WorkFooterContainer(Context context, AttributeSet attrs) {
33         super(context, attrs);
34     }
35 
WorkFooterContainer(Context context, AttributeSet attrs, int defStyleAttr)36     public WorkFooterContainer(Context context, AttributeSet attrs, int defStyleAttr) {
37         super(context, attrs, defStyleAttr);
38     }
39 
40     @Override
onLayout(boolean changed, int l, int t, int r, int b)41     protected void onLayout(boolean changed, int l, int t, int r, int b) {
42         super.onLayout(changed, l, t, r, b);
43         updateTranslation();
44     }
45 
46     @Override
offsetTopAndBottom(int offset)47     public void offsetTopAndBottom(int offset) {
48         super.offsetTopAndBottom(offset);
49         updateTranslation();
50     }
51 
updateTranslation()52     private void updateTranslation() {
53         if (getParent() instanceof View) {
54             View parent = (View) getParent();
55             int availableBot = parent.getHeight() - parent.getPaddingBottom();
56             setTranslationY(Math.max(0, availableBot - getBottom()));
57         }
58     }
59 }
60