SimpleTime.java

/*******************************************************************************
 * Copyright 2011 The Regents of the University of California
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.ohmage.triggers.utils;

import java.util.Calendar;
import java.util.Formatter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class SimpleTime {
	private int mHour;
	private int mMinute;
	
	public SimpleTime() {
		Calendar now = Calendar.getInstance();
		mHour = now.get(Calendar.HOUR_OF_DAY);
		mMinute = now.get(Calendar.MINUTE);
	}
	
	public SimpleTime(SimpleTime time) {
		this(time.getHour(), time.getMinute());
	}
	
	public SimpleTime(int hour, int minute) {
		mHour = hour;
		mMinute = minute;
	}
	
	public void copy(SimpleTime time) {
		mHour = time.getHour();
		mMinute = time.getMinute();
	}
	
	public int getHour() {
		return mHour;
	}
	
	public int getMinute() {
		return mMinute;
	}
	
	public void setHour(int hour) {
		mHour = hour;
	}
	
	public void setMinute(int minute) {
		mMinute = minute;
	}
	
	public String toString(boolean isAmPm) {
		
		if(isAmPm) {
			String amPm = "am";
			if(mHour >= 12) {
				amPm = "pm";
			}
			
			int hour = mHour;
			if(hour > 12) {
				hour -= 12;
			}
			else if(hour == 0) {
				hour = 12;
			}
			
			return new Formatter().format("%d:%02d " + amPm, hour, mMinute).toString();
		}
		else {
			return new Formatter().format("%d:%02d", mHour, mMinute).toString();
		}
	}
	
	public int differenceInMinutes(SimpleTime time) {
		return Math.abs((time.getHour() * 60 + time.getMinute())
						- (mHour * 60 + mMinute));
	}
	
	public boolean isAfter(SimpleTime time) {
		
		int thisTime = mHour * 60 + mMinute;
		int givenTime = time.getHour() * 60 + time.getMinute();
		
		if(thisTime > givenTime) {
			return true;
		}
		
		return false;
	}
	
	public boolean isBefore(SimpleTime time) {
		
		int thisTime = mHour * 60 + mMinute;
		int givenTime = time.getHour() * 60 + time.getMinute();
		
		if(thisTime < givenTime) {
			return true;
		}
		
		return false;
	}
	
	public boolean equals(Object time) {
		if(time instanceof SimpleTime) {
			SimpleTime t = (SimpleTime) time;
			
			if(t.getHour() == mHour && t.getMinute() == mMinute) {
				return true;
			}
		}
		
		return false;
	}
	
	public boolean loadString(String time) {
		
		Pattern pattern = Pattern.compile("([01]?[0-9]|2[0-3]):[0-5][0-9]");
		Matcher matcher = pattern.matcher(time);
		if(!matcher.matches()) {
			return false;
		}
		
		String[] timeTokens = time.split(":");
		mHour = Integer.parseInt(timeTokens[0]);
		mMinute = Integer.parseInt(timeTokens[1]);
		
		return true;
	}
	
	public String toString() {
		return this.toString(true);
	}
}