source: trunk/grails-app/views/study/createTimelineBandsJs.gsp @ 1430

<%@ page import="dbnp.studycapturing.EventGroup" %>
<%@ page import="dbnp.studycapturing.Subject" %>
/*
  * Creates timeline bands for displaying different timelines
  *
  * @returns array with BandInfo objects, as described on http://simile-widgets.org/wiki/Timeline_GettingStarted
  */
function createTimelineBands( timelineNr ) {
  var bandInfos = [];
  var eventSources = [];
  var overviewEventSource = new Timeline.DefaultEventSource();

  // The way the timeline should look. See http://www.linuxjournal.com/article/9301
  var theme = Timeline.ClassicTheme.create();
  var emptyEtherPainter = new Timeline.EmptyEtherPainter( { theme: theme } )

  // Now create the bands for all studies, and add them to one timeline
  // Multiple timelines on one page do not seem to work
  <g:set var="bandNr" value="${0}" />
  <g:each in="${studyList}" var="study" status="timelineNr">

        // The date that the timeline should start on
        var dateStr = "<g:formatDate format="yyyy/MM/dd HH:mm:ss" date="${study.startDate}"/>";
        firstDate = new Date ( dateStr );

        //------------- Eventgroup overview ---------------

        <g:set var="datesBandNr" value="${bandNr}" />
        // Add an empty band to show the dates
        bandInfos[${bandNr}] =
                   Timeline.createBandInfo({
                          width:          40,
                          intervalUnit:   Timeline.DateTime.DAY,
                          intervalPixels: 40,
                          showEventText:  false,
                          date:           firstDate,
                          timeZone:       +1,
                          layout:         'original',
                          theme:          theme
                   });

        // Make sure the date is printed using the relative time
        bandInfos[${bandNr}].etherPainter = new Timeline.RelativeDateEtherPainter( { theme: theme, startDate: firstDate, unit: Timeline.DateTime.DAY } );
        bandInfos[${bandNr}].labeller = new Timeline.RelativeDateLabeller( "en", 0, firstDate );

        bandTitleInfo[ timelineNr ][ ${bandNr} ] = {
          title: "${study.title}",
          subjects: "",
          className: "studytitle"
        };

        <g:set var="bandNr" value="${bandNr+1}" />
        <%
          def sortedEventGroups = study.eventGroups.sort( { a, b ->
                  return a.name <=> b.name;
          }  as Comparator );

          def orphans = study.getOrphanEvents();
          if( orphans?.size() > 0 ) {
                sortedEventGroups.add( new EventGroup(
                  id: -1,
                  name: 'No group',
                  events: orphans,
                  subjects: []
                ));
          }

        %>
        <g:each in="${sortedEventGroups}" var="eventGroup" status="i">

          //------------- Eventgroup ${bandNr} ---------------

          // Create an eventsource for all events
          eventSources[${bandNr}] = new Timeline.DefaultEventSource();

          // Load events for this eventsource (using jquery)
          var event_url = '${createLink(controller:'study', action:'events', id:( eventGroup.id ? eventGroup.id : -1 ), params: [ startDate: study.startDate.getTime(), study: study.id ])}';
          $.getJSON(event_url, $.callback( _loadJSONEvents, [0, ${bandNr}, eventSources[${bandNr}], overviewEventSource, event_url] ) );

          // Create a new timeline band
          bandInfos[${bandNr}] =
                         Timeline.createBandInfo({
                                 eventSource:    eventSources[${bandNr}],
                                 width:          30,
                                 intervalUnit:   Timeline.DateTime.DAY,
                                 intervalPixels: 40,
                                 date:           firstDate,
                                 timeZone:       +1,
                                 syncWith:       1,
                                 layout:         'original',
                                 theme:          theme
                         });

          // Make sure the date isn't printed by using the empty ether painter
          bandInfos[${bandNr}].etherPainter = emptyEtherPainter;

          // Add a title to the bandinfo
          <%
                ArrayList<Subject> sortedGroupSubjects = eventGroup.subjects.sort( { a, b -> a.name <=> b.name } as Comparator );

                // We can only show appr. 30 characters per line and as many lines as there are events
                def charsPerLine = 30;
                def numEvents = eventGroup.events?.size();
                Integer maxChars = new Integer( numEvents * charsPerLine );

                showSubjects = Subject.trimSubjectNames( sortedGroupSubjects, maxChars );
          %>
          
          bandTitleInfo[ timelineNr ][ ${bandNr} ] = {
                title: "${eventGroup.name}",
                className: "<g:if test="${ eventGroup.id == -1 || !eventGroup.id  }">no_group</g:if>",
                subjects: "${showSubjects}"
          };

          <g:set var="bandNr" value="${bandNr+1}" />
        </g:each>

        // Synchronize all bands
        <g:each in="${sortedEventGroups}" var="eventGroup" status="i">
          bandInfos[${i + datesBandNr +1}].syncWith = ${datesBandNr};
        </g:each>

  </g:each>

  return bandInfos;
}