1 /* 2 * Copyright (C) 2015 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.cts.verifier; 18 19 import android.annotation.TargetApi; 20 import android.content.Context; 21 import android.os.Handler; 22 import android.os.SystemClock; 23 import android.util.AttributeSet; 24 import android.widget.ProgressBar; 25 26 /** 27 * Can be used to show time outs for events. A progress bar will be displayed to the user. 28 * On calling start, it will start filling up. 29 */ 30 public class TimerProgressBar extends ProgressBar { TimerProgressBar(Context context)31 public TimerProgressBar(Context context) { 32 super(context); 33 setHandler(context); 34 } 35 TimerProgressBar(Context context, AttributeSet attrs)36 public TimerProgressBar(Context context, AttributeSet attrs) { 37 super(context, attrs); 38 setHandler(context); 39 } 40 TimerProgressBar(Context context, AttributeSet attrs, int defStyleAttr)41 public TimerProgressBar(Context context, AttributeSet attrs, int defStyleAttr) { 42 super(context, attrs, defStyleAttr); 43 setHandler(context); 44 } 45 46 @TargetApi(21) TimerProgressBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)47 public TimerProgressBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 48 super(context, attrs, defStyleAttr, defStyleRes); 49 setHandler(context); 50 } 51 setHandler(Context context)52 private void setHandler(Context context) { 53 mHandler = new Handler(context.getMainLooper()); 54 } 55 56 private Handler mHandler; 57 private TimerExpiredCallback mTimerExpiredCallback; 58 private long mStartTime; 59 private long mDuration; 60 private long mStepSize; 61 private boolean mForceComplete; 62 63 private Runnable mProgressCallback = new Runnable() { 64 @Override 65 public void run() { 66 if (mForceComplete) { 67 TimerProgressBar.this.setProgress(TimerProgressBar.this.getMax()); 68 return; 69 } 70 71 long currentTime = SystemClock.elapsedRealtime(); 72 int progress = (int) ((currentTime - mStartTime) / mStepSize); 73 progress = Math.min(progress, TimerProgressBar.this.getMax()); 74 TimerProgressBar.this.setProgress(progress); 75 76 if (mStartTime + mDuration > currentTime) { 77 mHandler.postDelayed(this, mStepSize); 78 } else { 79 if (mTimerExpiredCallback != null) { 80 mTimerExpiredCallback.onTimerExpired(); 81 } 82 } 83 } 84 }; 85 start(long duration, long stepSize)86 public void start(long duration, long stepSize) { 87 start(duration, stepSize, null); 88 } 89 90 /** 91 * Start filling up the progress bar. 92 * 93 * @param duration Time in milliseconds the progress bar takes to fill up completely 94 * @param stepSize Time in milliseconds between consecutive updates to progress bar's progress 95 * @param callback Callback that should be executed after the progress bar is filled completely (i.e. timer expires) 96 */ start(long duration, long stepSize, TimerExpiredCallback callback)97 public void start(long duration, long stepSize, TimerExpiredCallback callback) { 98 mDuration = duration; 99 mStepSize = stepSize; 100 mStartTime = SystemClock.elapsedRealtime(); 101 mForceComplete = false; 102 mTimerExpiredCallback = callback; 103 this.setMax((int) (duration / stepSize)); 104 this.setProgress(0); 105 mHandler.post(mProgressCallback); 106 } 107 108 /** 109 * Fill the progress bar completely. Timer expired callback won't be executed. 110 */ forceComplete()111 public void forceComplete() { 112 mForceComplete = true; 113 } 114 115 public interface TimerExpiredCallback { onTimerExpired()116 void onTimerExpired(); 117 } 118 119 } 120