1 /*
2  * Copyright (C) 2020 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.wallpaper.picker;
17 
18 import android.content.Context;
19 import android.util.AttributeSet;
20 import android.view.MotionEvent;
21 import android.view.View;
22 import android.widget.FrameLayout;
23 
24 /** A frame layout that listens to touch events and routes them to another view. */
25 public class TouchForwardingLayout extends FrameLayout {
26 
27     private View mView;
28     private boolean mForwardingEnabled;
29 
TouchForwardingLayout(Context context, AttributeSet attrs)30     public TouchForwardingLayout(Context context, AttributeSet attrs) {
31         super(context, attrs);
32     }
33 
34     @Override
dispatchTouchEvent(MotionEvent ev)35     public boolean dispatchTouchEvent(MotionEvent ev) {
36         if (mView != null && mForwardingEnabled) {
37             mView.dispatchTouchEvent(ev);
38         }
39         return true;
40     }
41 
42     /** Set the view that the touch events are routed to */
setTargetView(View view)43     public void setTargetView(View view) {
44         mView = view;
45     }
46 
setForwardingEnabled(boolean forwardingEnabled)47     public void setForwardingEnabled(boolean forwardingEnabled) {
48         mForwardingEnabled = forwardingEnabled;
49     }
50 }
51