1 /*
2  * Copyright (C) 2014 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.example.android.wearable.timer.util;
18 
19 import android.os.SystemClock;
20 
21 /** This class represents a timer. */
22 public class TimerObj {
23 
24     // Start time in milliseconds.
25     public long startTime;
26 
27     // Length of the timer in milliseconds.
28     public long originalLength;
29 
30     /**
31      * Construct a timer with a specific start time and length.
32      *
33      * @param startTime the start time of the timer.
34      * @param timerLength the length of the timer.
35      */
TimerObj(long startTime, long timerLength)36     public TimerObj(long startTime, long timerLength) {
37         this.startTime = startTime;
38         this.originalLength = timerLength;
39     }
40 
41     /**
42      * Calculate the time left of this timer.
43      * @return the time left for this timer.
44      */
timeLeft()45     public long timeLeft() {
46         long millis = SystemClock.elapsedRealtime();
47         return originalLength - (millis - startTime);
48     }
49 }
50