sonarqube/plugins/sonar-core-plugin/src/main/resources/org/sonar/plugins/core/widgets/time_machine.html.erb

<%
  # Retrieve widget settings
  metric_ids = []
  (1..10).each do |index|
    metric=widget_properties["metric#{index}"]
    if metric
      metric_ids << metric.id
    end
  end
  if metric_ids.empty?
    # No metric has been selected, it's the first time the widget is displayed: 'ncloc' is the default metric
    ncloc = Metric.find(:first, :conditions => "name = 'ncloc'")
    metric_ids << ncloc.id
  end
  numberOfColumns = widget_properties["numberOfColumns"].to_i == 0 ? 4 : widget_properties["numberOfColumns"].to_i
  displaySparkLine = widget_properties["displaySparkLine"]
  
  # Retrieve the measures for each metric on each snapshot
  options = {}
  from_date = dashboard_configuration.from_datetime
  if from_date
    options[:from] = from_date
  end
  snapshots=Snapshot.for_timemachine_widget(@resource, numberOfColumns, options)
  sids = snapshots.collect{|s| s.id}.uniq
  measures=ProjectMeasure.find(:all, :conditions => {:snapshot_id => sids, :metric_id => metric_ids})

  # And prepare the rows to display
  snapshot_by_id={}
  snapshots.each do |s|
    snapshot_by_id[s.id]=s
  end
  rows_by_metric_id={}
  measures.each do |measure|
    next unless measure.metric

    if measure.metric.timemachine? && (measure.value || measure.text_value)
      row=rows_by_metric_id[measure.metric_id]
      unless row
        row=Sonar::TimemachineRow.new(measure.metric)
        rows_by_metric_id[measure.metric_id]=row
      end

      #optimization : avoid eager loading of snapshots
      measure.snapshot=snapshot_by_id[measure.snapshot_id]
      row.add_measure(measure)
    end
  end
  
  # Create the list of rows to display in the same order as defined by the user
  rows=[]
  metric_ids.each do |metric_id|
    row = rows_by_metric_id[metric_id]
    if row
      rows<<row
    end
  end
%>

<div class="widget-matrix">

<table class="data">

  <thead>
    <tr>
      <th> </th>
      <% 
        snapshots.each do |snapshot| 
          event = snapshot.event('Version')
      %>
        <th nowrap="nowrap" style="vertical-align:top">
            <%= l snapshot.created_at.to_date -%>
            <br/>
            <%= event.name unless event==nil -%>
        </th>
      <% end %>
      <% if displaySparkLine %>
      <th> </th>
      <% end %>
  </tr>
  </thead>

  <tbody>
    <%
      rows.select{|row| row.metric.val_type != Metric::VALUE_TYPE_DISTRIB}.each do |row|
    %>
    <tr class="<%= cycle 'even','odd' -%>">
      <td width="1%" nowrap="nowrap" class="left text">
        <%= row.metric.short_name %>
      </td>
    <% 
      snapshots.each do |snapshot|
        measure=row.measure(snapshot)
    %>
      <td width="1%" nowrap="nowrap" class="right"><%= format_measure(measure, :skip_span_id => true) %></td>
    <% end %>
    <%
      sparkline_url=row.sparkline_url
      if displaySparkLine && sparkline_url
    %>
      <td width="1%" >
        <%= image_tag(sparkline_url) %>
      </td>
    <% end %>
    </tr>
    <% end %>
  </tbody>

</table>

</div>