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1 /*
2  * Copyright (C) 2010 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 
17 package com.android.videoeditor.widgets;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 import android.view.View;
22 import android.view.ViewGroup;
23 import android.widget.RelativeLayout;
24 
25 /**
26  * The RelativeLayout which is the container for the timeline layout
27  */
28 public class TimelineRelativeLayout extends RelativeLayout {
29     // Instance variables
30     private LayoutCallback mLayoutCallback;
31 
32     /**
33      * Layout complete callback interface
34      */
35     public interface LayoutCallback {
36         /**
37          * This method is invoked when the layout completes after a call
38          * to requestLayout(LayoutCallback)
39          */
onLayoutComplete()40         public void onLayoutComplete();
41     }
42 
TimelineRelativeLayout(Context context, AttributeSet attrs, int defStyle)43     public TimelineRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
44         super(context, attrs, defStyle);
45 
46         setMotionEventSplittingEnabled(false);
47     }
48 
TimelineRelativeLayout(Context context, AttributeSet attrs)49     public TimelineRelativeLayout(Context context, AttributeSet attrs) {
50         this(context, attrs, 0);
51     }
52 
TimelineRelativeLayout(Context context)53     public TimelineRelativeLayout(Context context) {
54         this(context, null, 0);
55     }
56 
57     /**
58      * Request a layout and get a callback when the layout completes
59      *
60      * @param callback The layout callback
61      */
requestLayout(LayoutCallback callback)62     public void requestLayout(LayoutCallback callback) {
63         mLayoutCallback = callback;
64 
65         requestLayout();
66     }
67 
68     @Override
onLayout(boolean changed, int l, int t, int r, int b)69     public void onLayout(boolean changed, int l, int t, int r, int b) {
70         super.onLayout(changed, l, t, r, b);
71 
72         if (mLayoutCallback != null) {
73             mLayoutCallback.onLayoutComplete();
74             mLayoutCallback = null;
75         }
76     }
77 
78     @Override
setSelected(boolean selected)79     public void setSelected(boolean selected) {
80         final int childrenCount = getChildCount();
81         for (int i = 0; i < childrenCount; i++) {
82             final View childView = getChildAt(i);
83             if (childView instanceof ViewGroup) {
84                 childView.setSelected(selected);
85             }
86         }
87     }
88 }
89