openproject/app/views/rb_burndown_charts/_burndown.html.erb

<%- charts = (burndown.is_a?(Array) ? burndown : [burndown]) %>
<%- dataseries = charts[0].series(:all).collect{|series| series.name } %>

  <%= stylesheet_link_tag 'jqplot.css', :plugin => 'redmine_backlogs' %>

  <%= javascript_include_tag 'jquery-1.4.2.min.js', :plugin => 'redmine_backlogs' %>
  <!--[if IE]><%= javascript_include_tag 'jquery.jqplot/excanvas.js', :plugin => 'redmine_backlogs' %><![endif]-->
  <%= javascript_include_tag 'jquery.jqplot/jquery.jqplot.js', :plugin => 'redmine_backlogs' %>
  <%= javascript_include_tag 'jquery.jqplot/plugins/jqplot.highlighter.js', :plugin => 'redmine_backlogs' %>
  <%= javascript_include_tag 'jquery.cookies.2.2.0.min.js', :plugin => 'redmine_backlogs' %>

  <style type="text/css" media="screen">
    .jqplot-axis {
      font-size: 0.85em;
    }
    .jqplot-title {
      font-size: 1.1em;
    }
    .jqplot-y6axis-tick {
      padding-right: 0px;
    }
  </style>
  <script type="text/javascript" language="javascript">
    // Define options otherwise jqplot throws an error
    var options = {};
    // chart objects
    burndown_charts = new Object();
    // TODO: I have no idea why plain 'jQuery' doesn't work
    burndown_charts.jquery = jQuery.noConflict();

    <%- charts.each do |chart| %>
      burndown_charts[<%= chart.sprint_id%>] = {
        chart: null,
        dataset_position: {<%= chart.series.enum_for(:each_with_index).collect{|s, i| "#{s.name}: #{i}"}.join(', ') %>},
        datasets: [<%= chart.series.collect{|s| "[#{s.join(',')}]"}.join(', ') %>],
        series: [<%= chart.series.collect{|s| "{ label: '#{escape_javascript(l(s.name))}', yaxis: 'y#{s.units == :points ? '' : '2'}axis' }"}.join(',') %>],
        xticks: [<%= chart.days.enum_for(:each_with_index).collect{|d,i| "[#{i+1}, '#{escape_javascript(::I18n.t('date.abbr_day_names')[d.wday % 7])}']"}.join(',') %>],

        // add a little clearance to the chart
        max_y: <%= chart.max[:points] == 0 ? 1 : 1.01 * chart.max[:points] %>,
        max_y2: <%= chart.max[:hours] == 0 ? 1 : 1.01 * chart.max[:hours] %>,

        initialize: function() {
          decoration = !(burndown_charts.jquery('#<%= "#{div}#{chart.sprint_id}" %>').hasClass('minimal'));

          this.chart = burndown_charts.jquery.jqplot('<%= "#{div}#{chart.sprint_id}" %>', this.datasets, {
            legend: {show: decoration, location: 'sw'},
            grid: {shadow:false},
            seriesDefaults: {showMarker: decoration, shadow:false},
            axesDefaults: {showTick: decoration},
            series: this.series,
            axes:{
              xaxis:{min:1, max:<%= chart.days.length %>, tickInterval:1, ticks: this.xticks}, 
              yaxis:{min:0, max: this.max_y, tickOptions:{formatString:'%d'}},
              y2axis:{min:0, max: this.max_y2, tickOptions:{formatString:'%d'}}
              },
            highlighter:{
              tooltipAxes: 'y',
              formatString: '%s'
            }
          });
        },

        reconfigure: function(disabled) {
          if (this.chart) {
            <%- dataseries.each do |series| %>
              p = this.dataset_position['<%= "#{series}" %>'];
              if (!(p == undefined)) { this.chart.series[p].show = (disabled.indexOf('|<%= "#{series}" %>|') == -1); };
            <%- end %>
            this.chart.replot();
          }
        }
      };
    <%- end %>

    function burndown_configure(cb)
    {
      disabled = '|' + burndown_charts.jquery.cookies.get('burndown_series') + '|';

      if (!(cb == undefined)) {
        _disabled = [];
        <%- dataseries.each do |series| %>
          if (disabled.indexOf('|<%= "#{series}" %>|') != -1 && cb.value != '<%= "#{series}" %>') {
            _disabled.push('<%= "#{series}" %>');
          }
        <%- end %>
        if (!cb.checked) {
          _disabled.push(cb.value);
        }
        disabled = _disabled.join('|');
        burndown_charts.jquery.cookies.set('burndown_series', disabled, { expiresAt: new Date((new Date()).getFullYear + 100, 1, 1)});
        disabled = '|' + disabled + '|';
      }

      checkboxes = burndown_charts.jquery('.series_enabled');
      if (checkboxes) {
        /* enable all, then reset */
        checkboxes.attr('checked', true);
        <%- dataseries.each do |series| %>
          checkbox = burndown_charts.jquery('#<%= "#{series}" %>_enabled');
          if (checkbox && -1 != disabled.indexOf('|<%= "#{series}" %>|')) { checkbox.attr('checked', false); }
        <%- end %>
      }

      <%- charts.each do |chart| %>
        burndown_charts[<%= chart.sprint_id %>].reconfigure(disabled);
      <%- end %>
    }

    burndown_charts.jquery(document).ready(function(){
      <%- charts.each do |chart| %>
        burndown_charts[<%= chart.sprint_id%>].initialize();
      <%- end %>
      burndown_configure();
    });
  </script>