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 */ 40 public void onLayoutComplete(); 41 } 42 43 public TimelineRelativeLayout(Context context, AttributeSet attrs, int defStyle) { 44 super(context, attrs, defStyle); 45 46 setMotionEventSplittingEnabled(false); 47 } 48 49 public TimelineRelativeLayout(Context context, AttributeSet attrs) { 50 this(context, attrs, 0); 51 } 52 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 */ 62 public void requestLayout(LayoutCallback callback) { 63 mLayoutCallback = callback; 64 65 requestLayout(); 66 } 67 68 @Override 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 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
