1 /*
2  * Copyright (C) 2014 Google Inc.
3  * Licensed to The Android Open Source Project.
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 package com.android.mail.ui;
19 
20 import android.content.Context;
21 import android.support.v4.widget.SwipeRefreshLayout;
22 import android.util.AttributeSet;
23 import android.view.View;
24 
25 /**
26  * Overrides {@code SwipeRefreshLayout} to enable swiping the empty state.
27  */
28 public class MailSwipeRefreshLayout extends SwipeRefreshLayout {
29 
30     private View mScrollableChild;
MailSwipeRefreshLayout(Context context)31     public MailSwipeRefreshLayout(Context context) {
32         this(context, null);
33     }
34 
MailSwipeRefreshLayout(Context context, AttributeSet attr)35     public MailSwipeRefreshLayout(Context context, AttributeSet attr) {
36         super(context, attr);
37     }
38 
setScrollableChild(View scrollableChild)39     public void setScrollableChild(View scrollableChild) {
40         mScrollableChild = scrollableChild;
41     }
42 
43     @Override
canChildScrollUp()44     public boolean canChildScrollUp() {
45         return mScrollableChild.canScrollVertically(-1 /* up direction */);
46     }
47 }
48