Imports DevExpress.XtraCharts
Imports EnvelopeGenerator.Common

Public Class EnvelopeListController
    Inherits BaseController

    Public Sub New(pState As State)
        MyBase.New(pState)
    End Sub

    Public Function ListEnvelopes() As IEnumerable(Of Envelope)
        Return EnvelopeModel.List()
    End Function
    Public Function ListCompleted() As Object
        Return EnvelopeModel.ListCompleted()
    End Function

    Public Overloads Function DeleteEnvelope(pEnvelope As Envelope, pReason As String) As Boolean
        Return MyBase.DeleteEnvelope(pEnvelope, pReason)
    End Function

    Public Function GetPieChart() As ChartControl
        Dim oChartControl As ChartControl = New ChartControl With {
            .Name = "ChartControl1",
            .Dock = DockStyle.Fill
        }

        Dim oSerie As Series = New Series("PIE Title", ViewType.Pie3D) With {
            .LegendTextPattern = "{A}"
        }

        Dim pieLabel As PieSeriesLabel = TryCast(oSerie.Label, PieSeriesLabel)
        If pieLabel IsNot Nothing Then
            pieLabel.Position = PieSeriesLabelPosition.Outside
        End If

        Dim xAxisTitle As String = "Argument"
        Dim yAxisTitle As String = "Value"

        Dim oTable As DataTable = ChartModel.LoadPIEExample()

        For Each oRow In oTable.Rows
            Dim value1 As String = CStr(oRow.Item(xAxisTitle))
            Dim value2 As String = CStr(oRow.Item(yAxisTitle))
            oSerie.Points.Add(New SeriesPoint(value1, value2))
        Next

        oSerie.ArgumentScaleType = ScaleType.Qualitative
        oChartControl.Series.Add(oSerie)

        Return oChartControl
    End Function
End Class