void ControlTreeDataLoader.LoadData()
{
CssClass = CssClass.ConcatenateWithSpace( CssElementCreator.CssClass );
var rand = new Random();
var actualColors = ( colors ?? getDefaultColors() ).Take( seriesCollection.Count() )
.Pad( seriesCollection.Count(), () => Color.FromArgb( rand.Next( 256 ), rand.Next( 256 ), rand.Next( 256 ) ) );
Func<DataSeries, Color, BaseDataset> datasetSelector;
OptionsBase options;
switch( setup.ChartType ) {
case ChartType.Line:
datasetSelector = ( series, color ) => new Dataset( color, series.Values.TakeLast( setup.MaxXValues ) );
options = new LineOptions { bezierCurve = false };
break;
case ChartType.Bar:
datasetSelector = ( series, color ) => new BaseDataset( color, series.Values.TakeLast( setup.MaxXValues ) );
// ReSharper disable once RedundantEmptyObjectOrCollectionInitializer
options = new BarOptions { };
break;
default:
throw new UnexpectedValueException( setup.ChartType );
}
var chartData = new ChartData(
setup.Labels.TakeLast( setup.MaxXValues ),
seriesCollection.Zip( actualColors, ( series, color ) => datasetSelector( series, color ) ).ToArray() );
var canvas = new HtmlGenericControl( "canvas" );
switch( setup.ChartType ) {
case ChartType.Line:
case ChartType.Bar:
canvas.Attributes.Add( "height", "400" );
break;
default:
throw new UnexpectedValueException( setup.ChartType );
}
Controls.Add( canvas );
if( seriesCollection.Count() > 1 ) {
Controls.Add(
new Box(
"Key",
new ControlLine(
chartData.datasets.Select(
( dataset, i ) =>
new Literal
{
Text =
@"<div style='display: inline-block; vertical-align: middle; width: 20px; height: 20px; background-color: {0}; border: 1px solid {1};'> </div> {2}"
.FormatWith( dataset.fillColor, dataset.strokeColor, seriesCollection.ElementAt( i ).Name )
} as Control ).ToArray() ).ToSingleElementArray() ) );
}
// Remove this when ColumnPrimaryTable supports Excel export.
var headers = setup.XAxisTitle.ToSingleElementArray().Concat( seriesCollection.Select( v => v.Name ) );
var tableData = new List<IEnumerable<object>>( seriesCollection.First().Values.Count() );
for( var i = 0; i < tableData.Capacity; i++ ) {
var i1 = i;
tableData.Add( setup.Labels.ElementAt( i1 ).ToSingleElementArray().Concat( seriesCollection.Select( v => v.Values.ElementAt( i1 ).ToString() ) ) );
}
Controls.Add( getExportButton( headers, tableData ) );
var table = new ColumnPrimaryTable(
firstDataFieldIndex: 1,
items:
new EwfTableItem( from i in setup.XAxisTitle.ToSingleElementArray().Concat( setup.Labels ) select i.ToCell() ).ToSingleElementArray()
.Concat(
from series in seriesCollection
select new EwfTableItem( series.Name.ToCell().ToSingleElementArray().Concat( from i in series.Values select i.ToString().ToCell() ) ) ) );
Controls.Add( table );
using( var writer = new StringWriter() ) {
writer.WriteLine( "var canvas = document.getElementById( '{0}' );".FormatWith( canvas.ClientID ) );
writer.WriteLine( "canvas.width = $( canvas ).parent().width();" );
writer.WriteLine( "new Chart( canvas.getContext( '2d' ) ).{0}( {1}, {2} );".FormatWith( setup.ChartType, chartData.ToJson(), options.ToJson() ) );
jsInitStatements = writer.ToString();
}
}
