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
17package com.example.android.wearable.timer.util;
18
19import android.os.SystemClock;
20
21/** This class represents a timer. */
22public 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     */
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     */
45    public long timeLeft() {
46        long millis = SystemClock.elapsedRealtime();
47        return originalLength - (millis - startTime);
48    }
49}
50