GanttDataProvider

Default dataset to show.

This object configures available data series, metadata and a function to calculate the values. Every key is a dataset name, and every value is an SeriesMetaData object with the following properties:

• text - the text to display in the legend
• total - the total value of the series
• color - the color of the series
• callback - the function to calculate the value of the series

// Metadata object example
duration : {
    text : 'Duration',
    total : 0,
    color : '#CC0033',
    callback : this.prototype.getTaskDuration
}

Color

Color is an optional parameter. If not provided, the default color will be used. Series color can be styles with CSS using attribute selector:

.b-timeline-overlay-chart path[data-series="name"] { stroke: #FF0000; }
.b-timeline-overlay-chart circle[data-series="name"] { fill: #FF0000; }

Callback

Callback is used to generate series data. It is called for every leaf task for every interval, specified by unit, between project start and end dates. For example, to calculate working time of the task in the given period:

new Gantt({
  features : {
    timelineChart : {
      dataProvider : {
        meta : {
          duration : {
            callback : (task, start, end) {
              // default implementation
              return task.effectiveCalendar.calculateDurationMs(start, end);
            }
          }
        }
      }
    }
  }
});

Returns dataset for the chart