001 /**
002 * Copyright 2004-2013 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package org.kuali.hr.time.timezone.service;
017
018 import java.util.List;
019
020 import org.apache.commons.lang.ObjectUtils;
021 import org.apache.commons.lang.StringUtils;
022 import org.joda.time.DateTime;
023 import org.joda.time.DateTimeZone;
024 import org.kuali.hr.job.Job;
025 import org.kuali.hr.location.Location;
026 import org.kuali.hr.time.principal.PrincipalHRAttributes;
027 import org.kuali.hr.time.service.base.TkServiceLocator;
028 import org.kuali.hr.time.timeblock.TimeBlock;
029 import org.kuali.hr.time.util.TKContext;
030 import org.kuali.hr.time.util.TKUtils;
031 import org.kuali.rice.krad.util.GlobalVariables;
032
033 public class TimezoneServiceImpl implements TimezoneService {
034
035 @Override
036 public String getUserTimezone(String principalId) {
037 PrincipalHRAttributes principalCalendar = TkServiceLocator.getPrincipalHRAttributeService().getPrincipalCalendar(principalId, TKUtils.getCurrentDate());
038 if(principalCalendar != null && principalCalendar.getTimezone() != null){
039 return principalCalendar.getTimezone();
040 }
041 List<Job> jobs = TkServiceLocator.getJobService().getJobs(TKContext.getPrincipalId(), TKUtils.getCurrentDate());
042 if (jobs.size() > 0) {
043 // Grab the location off the first job in the list
044 Location location = TkServiceLocator.getLocationService().getLocation(jobs.get(0).getLocation(), TKUtils.getCurrentDate());
045 if (location!=null){
046 if(StringUtils.isNotBlank(location.getTimezone())){
047 return location.getTimezone();
048 }
049 }
050 }
051 return TKUtils.getSystemTimeZone();
052 }
053
054 /**
055 * Used to determine if an override condition exists for a user timezone
056 */
057 @Override
058 public String getUserTimezone() {
059 String timezone = "";
060 if (GlobalVariables.getUserSession() != null) {
061 timezone = getUserTimezone(GlobalVariables.getUserSession().getPrincipalId());
062 }
063 return timezone;
064 }
065
066 @Override
067 public DateTimeZone getUserTimezoneWithFallback() {
068 String tzid = getUserTimezone();
069 if (StringUtils.isEmpty(tzid)) {
070 return TKUtils.getSystemDateTimeZone();
071 } else {
072 return DateTimeZone.forID(tzid);
073 }
074 }
075
076 /**
077 * Translation needed for UI Display
078 * @param timeBlocks
079 * @param timezone
080 * @return timeblock list modified with times offset for timezone
081 */
082 public List<TimeBlock> translateForTimezone(List<TimeBlock> timeBlocks, DateTimeZone timezone){
083 for(TimeBlock tb : timeBlocks){
084 //No need for translation if it matches the current timezone
085 if(ObjectUtils.equals(timezone, TKUtils.getSystemDateTimeZone())){
086 tb.setBeginTimeDisplay(new DateTime(tb.getBeginTimestamp()));
087 tb.setEndTimeDisplay(new DateTime(tb.getEndTimestamp()));
088 }
089 else {
090 tb.setBeginTimeDisplay(new DateTime(tb.getBeginTimestamp(), timezone));
091 tb.setEndTimeDisplay(new DateTime(tb.getEndTimestamp(), timezone));
092 }
093 }
094 return timeBlocks;
095 }
096
097 public void translateForTimezone(List<TimeBlock> timeBlocks) {
098 translateForTimezone(timeBlocks, getUserTimezoneWithFallback());
099 }
100
101 @Override
102 public boolean isSameTimezone() {
103 String userTimezone = getUserTimezone();
104 if(StringUtils.isNotBlank(userTimezone)) {
105 return StringUtils.equals(TKUtils.getSystemTimeZone(), userTimezone);
106 }
107 return true;
108 }
109
110
111 public long getTimezoneOffsetFromServerTime(DateTimeZone dtz){
112 long systemOffsetUTC = TKUtils.getSystemDateTimeZone().getOffset(null);
113 long tzOffsetUTC = dtz.getOffset(null);
114 return tzOffsetUTC - systemOffsetUTC;
115 }
116
117
118
119 }