public static converter()

in src/gantt.ts [1312:1360]
41 lines of code
10 McCabe index (conditional complexity)

    public static converter(
        dataView: DataView,
        host: IVisualHost,
        colors: IColorPalette,
        colorHelper: ColorHelper,
        localizationManager: ILocalizationManager): GanttViewModel {

        if (!dataView
            || !dataView.categorical
            || !Gantt.isChartHasTask(dataView)
            || dataView.categorical.categories.length === 0) {
            return null;
        }

        const settings: GanttSettings = this.parseSettings(dataView, colorHelper);
        const taskTypes: TaskTypes = Gantt.getAllTasksTypes(dataView);
        const formatters: GanttChartFormatters = this.getFormatters(dataView, settings, host.locale || null);

        const isDurationFilled: boolean = _.findIndex(dataView.metadata.columns, col => col.roles.hasOwnProperty(GanttRoles.Duration)) !== -1,
            isEndDateFillled: boolean = _.findIndex(dataView.metadata.columns, col => col.roles.hasOwnProperty(GanttRoles.EndDate)) !== -1,
            isParentFilled: boolean = _.findIndex(dataView.metadata.columns, col => col.roles.hasOwnProperty(GanttRoles.Parent)) !== -1,
            isResourcesFilled: boolean = _.findIndex(dataView.metadata.columns, col => col.roles.hasOwnProperty(GanttRoles.Resource)) !== -1;

        const legendData: LegendData = Gantt.createLegend(host, colors, settings, taskTypes, !isDurationFilled && !isEndDateFillled);
        const milestonesData: MilestoneData = Gantt.createMilestones(dataView, host);

        let taskColor: string = (legendData.dataPoints.length <= 1) || !isDurationFilled
            ? settings.taskConfig.fill
            : null;

        const tasks: Task[] = Gantt.createTasks(dataView, taskTypes, host, formatters, colors, settings, taskColor, localizationManager, isEndDateFillled);

        // Remove empty legend if tasks isn't exist
        const types = _.groupBy(tasks, x => x.taskType);
        legendData.dataPoints = legendData.dataPoints.filter(x => types[x.label]);

        return {
            dataView,
            settings,
            taskTypes,
            tasks,
            legendData,
            milestonesData,
            isDurationFilled,
            isEndDateFillled,
            isParentFilled,
            isResourcesFilled
        };
    }