/
SankeyItemControlProvider.cs
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/
SankeyItemControlProvider.cs
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using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using DevExpress.DashboardCommon;
using DevExpress.DashboardCommon.ViewerData;
using DevExpress.DashboardWin;
using DevExpress.DataProcessing;
using DevExpress.Utils;
using DevExpress.Utils.Extensions;
using DevExpress.XtraCharts.Sankey;
using DevExpress.XtraReports.UI;
namespace DevExpress.DashboardWin.CustomItemExtension {
public class SankeyItemControlProvider : CustomControlProviderBase {
DashboardFlatDataSource flatData;
MultiDimensionalData multiDimensionalData;
SankeyDiagramControl sankey;
CustomDashboardItem<SankeyItemMetadata> dashboardItem;
ToolTipController toolTipController;
protected override Control Control { get { return sankey; } }
public SankeyItemControlProvider(CustomDashboardItem<SankeyItemMetadata> dashboardItem) {
this.dashboardItem = dashboardItem;
sankey = new DashboardSankeyDiagramControl();
sankey.BorderOptions.Thickness = 0;
sankey.EmptySankeyText.Text = string.Empty;
sankey.SelectedItemsChanged += Sankey_SelectedItemsChanged;
toolTipController = new ToolTipController();
toolTipController.BeforeShow += ToolTipController_BeforeShow;
sankey.ToolTipController = toolTipController;
sankey.SelectedItemsChanging += Sankey_SelectedItemsChanging;
sankey.HighlightedItemsChanged += Sankey_HighlightedItemsChanged;
}
protected override void UpdateControl(CustomItemData customItemData) {
multiDimensionalData = customItemData.GetMultiDimensionalData();
flatData = customItemData.GetFlatData(new DashboardFlatDataSourceOptions() { AddColoringColumns = true, AddDisplayTextColumns = true });
ClearBindings();
if(ValidateBindings()) {
SetDataBindings(flatData);
SetSelectionMode();
}
}
protected override void SetSelection(CustomItemSelection selection) {
IList<DashboardFlatDataSourceRow> selectedRows = selection.GetDashboardFlatDataSourceRows(flatData);
sankey.SelectedItems.Clear();
selectedRows.ForEach(r => sankey.SelectedItems.Add(r));
}
protected override XRControl GetPrintableControl(CustomItemData customItemData, CustomItemExportInfo exportInfo) {
PrintableComponentContainer container = new PrintableComponentContainer();
container.PrintableComponent = sankey;
return container;
}
void Sankey_HighlightedItemsChanged(object sender, SankeyHighlightedItemsChangedEventArgs e) {
if((sankey.SelectionMode == SankeySelectionMode.Single && e.HighlightedNodes.Count > 0) || e.HighlightedLinks.Any(x => HasSpecialValues(x)))
sankey.HighlightedItems.Clear();
}
void Sankey_SelectedItemsChanging(object sender, SankeySelectedItemsChangingEventArgs e) {
if(e.Action == DevExpress.XtraCharts.SelectedItemsChangedAction.Reset) {
e.Cancel = true;
return;
}
if((sankey.SelectionMode == SankeySelectionMode.Single && e.NewNodes.Count > 0) || e.NewLinks.Any(x => HasSpecialValues(x)))
e.Cancel = true;
}
void ToolTipController_BeforeShow(object sender, DevExpress.Utils.ToolTipControllerShowEventArgs e) {
if(dashboardItem.Metadata.Weight == null)
e.ToolTip = string.Empty;
else if(e.SelectedObject is SankeyLink) {
SankeyLink link = e.SelectedObject as SankeyLink;
e.ToolTip = multiDimensionalData.GetMeasures()[0].Format(link.TotalWeight);
} else if(e.SelectedObject is SankeyNode) {
SankeyNode node = e.SelectedObject as SankeyNode;
e.ToolTip = multiDimensionalData.GetMeasures()[0].Format(node.TotalWeight);
}
}
void Sankey_SelectedItemsChanged(object sender, SankeySelectedItemsChangedEventArgs e) {
if(sankey.SelectedItems.Count == 0 && Interactivity.CanClearMasterFilter)
Interactivity.ClearMasterFilter();
else if(sankey.SelectedItems.Count > 0 && Interactivity.CanSetMasterFilter)
Interactivity.SetMasterFilter(sankey.SelectedItems.OfType<DashboardFlatDataSourceRow>());
}
bool ValidateBindings() {
if(Interactivity.IsDrillDownEnabled) {
sankey.EmptySankeyText.Text = "The Sankey Item does not support Drill-Down";
return false;
}
if(dashboardItem.Metadata.Source == null || dashboardItem.Metadata.Target == null) {
sankey.EmptySankeyText.Text = "Add the Source and Target dimensions";
return false;
}
if(dashboardItem.Metadata.Source.GetDefinition().Equals(dashboardItem.Metadata.Target.GetDefinition())) {
sankey.EmptySankeyText.Text = "Add different data fields to the Source and Target sections";
return false;
}
return true;
}
void SetDataBindings(DashboardFlatDataSource flatData) {
sankey.Colorizer = new SankeyItemColorizer(flatData);
sankey.SourceDataMember = flatData.GetDisplayTextColumn(dashboardItem.Metadata.Source.UniqueId).Name;
sankey.TargetDataMember = flatData.GetDisplayTextColumn(dashboardItem.Metadata.Target.UniqueId).Name;
if(dashboardItem.Metadata.Weight != null)
sankey.WeightDataMember = dashboardItem.Metadata.Weight.UniqueId;
try {
sankey.DataSource = flatData;
} catch {
sankey.DataSource = null;
}
}
void ClearBindings() {
sankey.DataSource = null;
sankey.Colorizer = null;
sankey.SourceDataMember = null;
sankey.TargetDataMember = null;
sankey.WeightDataMember = null;
}
void SetSelectionMode() {
switch(Interactivity.MasterFilterMode) {
case DashboardItemMasterFilterMode.None:
sankey.SelectionMode = SankeySelectionMode.None;
return;
case DashboardItemMasterFilterMode.Multiple:
sankey.SelectionMode = SankeySelectionMode.Extended;
break;
case DashboardItemMasterFilterMode.Single:
sankey.SelectionMode = SankeySelectionMode.Single;
break;
}
}
bool HasSpecialValues(SankeyLink link) {
DashboardFlatDataSourceRow row = (DashboardFlatDataSourceRow)link.Tags[0];
return SpecialValues.IsOthersValue(flatData.GetValue(dashboardItem.Metadata.Source.UniqueId, row))
|| SpecialValues.IsOthersValue(flatData.GetValue(dashboardItem.Metadata.Target.UniqueId, row));
}
}
class SankeyItemColorizer : ISankeyColorizer {
readonly Color nodeDefaultColor = Color.FromArgb(255, 95, 139, 149);
readonly DashboardFlatDataSource flatData;
public SankeyItemColorizer(DashboardFlatDataSource flatData) {
this.flatData = flatData;
}
public Color GetLinkSourceColor(SankeyLink link) {
return GetLinkColorBase(link);
}
public Color GetLinkTargetColor(SankeyLink link) {
return GetLinkColorBase(link);
}
public Color GetLinkColorBase(SankeyLink link) {
DashboardFlatDataSourceRow row = link.Tags[0] as DashboardFlatDataSourceRow;
int colorData = (int)flatData.GetValue(flatData.GetColoringColumn().Name, row);
return Color.FromArgb(colorData);
}
public Color GetNodeColor(SankeyNode info) {
return nodeDefaultColor;
}
}
public class DashboardSankeyDiagramControl : SankeyDiagramControl {
protected override void OnMouseUp(MouseEventArgs e) {
if(e.Button != MouseButtons.Right)
base.OnMouseUp(e);
}
}
}