src/main/java/net/bionicmessage/objects/RecurrenceManager.java

   1 /*
   2  * Redistribution and use in source and binary forms, with or without modification, are
   3  * permitted provided that the following conditions are met:
   4  *
   5  *    1. Redistributions of source code must retain the above copyright notice, this list of
   6  *       conditions and the following disclaimer.
   7  *
   8  *    2. Redistributions in binary form must reproduce the above copyright notice, this list
   9  *       of conditions and the following disclaimer in the documentation and/or other materials
  10  *       provided with the distribution.
  11  *
  12  * THIS SOFTWARE IS PROVIDED BY Mathew McBride ``AS IS'' AND ANY EXPRESS OR IMPLIED
  13  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  14  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
  15  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  16  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  17  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  18  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  19  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  20  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  21  *
  22  * The views and conclusions contained in the software and documentation are those of the
  23  * authors and should not be interpreted as representing official policies, either expressed
  24  * or implied, of Mathew McBride.
  25  */
  26 package net.bionicmessage.objects;
  27
  28 import java.util.ArrayList;
  29 import java.util.List;
  30 import net.fortuna.ical4j.model.Calendar;
  31 import net.fortuna.ical4j.model.Component;
  32 import net.fortuna.ical4j.model.ComponentList;
  33 import net.fortuna.ical4j.model.Date;
  34 import net.fortuna.ical4j.model.property.ExDate;
  35 import net.fortuna.ical4j.model.property.RecurrenceId;
  36 import net.fortuna.ical4j.model.property.Uid;
  37
  38 /**
  39  *
  40  * @author matt
  41  */
  42 public class RecurrenceManager {
  43
  44     public static List<String> getDetatchedRecurrenceUids(Calendar c) {
  45         ArrayList<String> uids = new ArrayList();
  46         ComponentList clist = (ComponentList) c.getComponents(Component.VEVENT);
  47         for (int i = 0; i < clist.size(); i++) {
  48             Component occurance = (Component) clist.get(i);
  49             Uid ui = (Uid) occurance.getProperty(Uid.UID);
  50             if (occurance.getProperty(RecurrenceId.RECURRENCE_ID) != null) {
  51                 RecurrenceId rid = (RecurrenceId) occurance.getProperty(RecurrenceId.RECURRENCE_ID);
  52                 uids.add(rid.getValue());
  53             }
  54         }
  55         return uids;
  56     }
  57
  58     public static Calendar obtainStandaloneRecurrence(Calendar c, String recurrenceId) {
  59         ArrayList<String> uids = new ArrayList();
  60         ComponentList clist = (ComponentList) c.getComponents(Component.VEVENT);
  61         for (int i = 0; i < clist.size(); i++) {
  62             Component occurance = (Component) clist.get(i);
  63             Uid ui = (Uid) occurance.getProperty(Uid.UID);
  64             if (occurance.getProperty(RecurrenceId.RECURRENCE_ID) != null) {
  65                 RecurrenceId rid = (RecurrenceId) occurance.getProperty(RecurrenceId.RECURRENCE_ID);
  66                 // Correct the UID
  67                 ui.setValue(ui.getValue()+"-r"+recurrenceId);
  68                 occurance.getProperties().remove(ui);
  69                 occurance.getProperties().add(ui);
  70                 if (rid.getValue().equals(recurrenceId)) {
  71                     Calendar standalone = new Calendar();
  72                     standalone.getComponents().add(occurance);
  73                     return standalone;
  74                 }
  75             }
  76         }
  77         return null;
  78     }
  79
  80     public static ExDate getExdateForCalendar(Calendar c, ExDate exd) {
  81         ArrayList<Date> detatchedDates = new ArrayList();
  82         ComponentList clist = (ComponentList) c.getComponents(Component.VEVENT);
  83         for (int i = 0; i < clist.size(); i++) {
  84             Component occurance = (Component) clist.get(i);
  85             if (occurance.getProperty(RecurrenceId.RECURRENCE_ID) != null) {
  86                 RecurrenceId rid = (RecurrenceId) occurance.getProperty(RecurrenceId.RECURRENCE_ID);
  87                 detatchedDates.add(rid.getDate());
  88             }
  89         }
  90         for (Date d : detatchedDates) {
  91             exd.getDates().add(d);
  92         }
  93         return exd;
  94     }
  95
  96     public static Calendar obtainMasterEvent(Calendar c) {
  97         ComponentList clist = (ComponentList) c.getComponents(Component.VEVENT);
  98         for (int i = 0; i < clist.size(); i++) {
  99             Component occurance = (Component) clist.get(i);
 100             if (occurance.getProperty(RecurrenceId.RECURRENCE_ID) == null) {
 101                 Calendar cm = new Calendar();
 102                 // Add the changed exdate
 103                 ExDate exd = (ExDate) occurance.getProperty(ExDate.EXDATE);
 104                 if (exd == null)
 105                     exd = new ExDate();
 106                 else
 107                     occurance.getProperties().remove(exd);
 108                 getExdateForCalendar(c, exd);
 109                 occurance.getProperties().add(exd);
 110                 cm.getComponents().add(occurance);
 111                 return cm;
 112             }
 113         }
 114         return null;
 115     }
 116 }