private void Chart_SelectionChanged(object sender, Syncfusion.UI.Xaml.Charts.ChartSelectionChangedEventArgs e)
{
if (e.SelectedSegment == null)
{
return;
}
ViewModel viewModel = (sender as SfChart).Series[0].DataContext as ViewModel;
string Category = (e.SelectedSegment.Item as CompanyExpense).Category;
if (Category == "Home")
{
(sender as SfChart).Series[0].ItemsSource = (e.SelectedSeries.DataContext as ViewModel).Home;
viewModel.PieConverter = viewModel.Home;
}
else if (Category == "Daily Living")
{
(sender as SfChart).Series[0].ItemsSource = (e.SelectedSeries.DataContext as ViewModel).DailyLiving;
viewModel.PieConverter = viewModel.DailyLiving;
}
else if (Category == "Entertainment")
{
(sender as SfChart).Series[0].ItemsSource = (e.SelectedSeries.DataContext as ViewModel).Entertainment;
viewModel.PieConverter = viewModel.Entertainment;
}
else if (Category == "Health")
{
(sender as SfChart).Series[0].ItemsSource = (e.SelectedSeries.DataContext as ViewModel).Health;
viewModel.PieConverter = viewModel.Health;
}
else if (Category == "Transportation")
{
(sender as SfChart).Series[0].ItemsSource = (e.SelectedSeries.DataContext as ViewModel).Transportation;
viewModel.PieConverter = viewModel.Transportation;
}
else if (Category == "Personal")
{
(sender as SfChart).Series[0].ItemsSource = (e.SelectedSeries.DataContext as ViewModel).Personal;
viewModel.PieConverter = viewModel.Personal;
}
(this.AssociatedObject.DataContext as ViewModel).BackButtonVisibility = Visibility.Visible;
}
/// <summary>
/// Method used to set SegmentSelectionBrush to SelectedIndex segment
/// </summary>
/// <param name="newIndex"></param>
/// <param name="oldIndex"></param>
protected internal override void SelectedIndexChanged(int newIndex, int oldIndex)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
if (ActualArea != null && ActualArea.SelectionBehaviour != null)
{
// Resets the adornment selection when the mouse pointer moved away from the adornment or clicked the same adornment.
if (ActualArea.SelectionBehaviour.SelectionStyle == SelectionStyle.Single)
{
if (SelectedSegmentsIndexes.Contains(oldIndex))
{
SelectedSegmentsIndexes.Remove(oldIndex);
}
OnResetSegment(oldIndex);
}
if (newIndex >= 0 && ActualArea.GetEnableSegmentSelection())
{
if (!SelectedSegmentsIndexes.Contains(newIndex))
{
SelectedSegmentsIndexes.Add(newIndex);
}
// Selects the adornment when the mouse is over or clicked on adornments(adornment selection).
if (adornmentInfo != null && adornmentInfo.HighlightOnSelection)
{
UpdateAdornmentSelection(newIndex);
}
if (ActualArea != null && Segments.Count > 0)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = Segments[0],
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
NewPointInfo = GetDataPoint(newIndex),
PreviousSelectedSeries = null,
PreviousSelectedSegment = null,
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.ActualArea.PreviousSelectedSeries;
if (oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(oldIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
}
}
else if (newIndex == -1 && ActualArea != null)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
PreviousSelectedSegment = null,
PreviousSelectedSeries = this,
IsSelected = false
};
if (oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(oldIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
}
else if (newIndex >= 0 && Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
}
}
internal override void SelectedSegmentsIndexes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
if (e.NewItems != null && !(ActualArea.SelectionBehaviour.SelectionStyle == SelectionStyle.Single))
{
int oldIndex = PreviousSelectedIndex;
int newIndex = (int)e.NewItems[0];
if (newIndex >= 0 && ActualArea.GetEnableSegmentSelection())
{
// Selects the adornment when the mouse is over or clicked on adornments(adornment selection).
if (adornmentInfo != null && adornmentInfo.HighlightOnSelection)
{
UpdateAdornmentSelection(newIndex);
}
if (ActualArea != null && Segments.Count > 0)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = Segments[0],
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
NewPointInfo = GetDataPoint(newIndex),
PreviousSelectedSeries = null,
PreviousSelectedSegment = null,
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.ActualArea.PreviousSelectedSeries;
if (oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(oldIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
}
}
}
break;
case NotifyCollectionChangedAction.Remove:
if (e.OldItems != null && !(ActualArea.SelectionBehaviour.SelectionStyle == SelectionStyle.Single))
{
int newIndex = (int)e.OldItems[0];
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = PreviousSelectedIndex,
PreviousSelectedSegment = null,
PreviousSelectedSeries = this,
IsSelected = false
};
if (PreviousSelectedIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(PreviousSelectedIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
OnResetSegment(newIndex);
PreviousSelectedIndex = newIndex;
}
break;
}
}
/// <summary>
/// Method used to set SegmentSelectionBrush to <see cref="SelectedIndex"/> <see cref="ChartSegment3D"/>
/// and trigger chart selection event.
/// </summary>
/// <param name="newIndex">The New Index</param>
/// <param name="oldIndex">The Old Index</param>
protected internal override void SelectedIndexChanged(int newIndex, int oldIndex)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
if (this.ActualArea != null)
{
ChartSegment3D segment;
// Reset the oldIndex segment Interior
if (this.Area.SelectionStyle == SelectionStyle3D.Single)
{
if (SelectedSegmentsIndexes.Contains(oldIndex))
{
SelectedSegmentsIndexes.Remove(oldIndex);
}
this.OnResetSegment(oldIndex);
}
if (newIndex >= 0 && (ActualArea as SfChart3D).EnableSegmentSelection)
{
if (!SelectedSegmentsIndexes.Contains(newIndex))
{
SelectedSegmentsIndexes.Add(newIndex);
}
// Set the SegmentSelectionBrush to newIndex segment Interior
if (newIndex < Segments.Count && this.SegmentSelectionBrush != null)
{
segment = Segments[newIndex] as ChartSegment3D;
segment.BindProperties();
foreach (var item in segment.Polygons)
{
item.Fill = this.SegmentSelectionBrush;
item.ReDraw();
}
}
if (newIndex < Segments.Count)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = this.SelectedSegment,
SelectedSegments = this.Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
NewPointInfo = Segments[newIndex].Item,
PreviousSelectedSegment = null,
PreviousSelectedSeries = null,
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.Area.PreviousSelectedSeries;
if (oldIndex >= 0 && oldIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[oldIndex];
chartSelectionChangedEventArgs.OldPointInfo = Segments[oldIndex].Item;
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
this.triggerSelectionChangedEventOnLoad = true;
}
}
else if (newIndex == -1 && this.ActualArea != null)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = this.Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
PreviousSelectedSegment = null,
PreviousSelectedSeries = this,
IsSelected = false
};
if (oldIndex != -1 && oldIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[oldIndex];
chartSelectionChangedEventArgs.OldPointInfo = Segments[oldIndex].Item;
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
}
}
/// <summary>
/// Updates the chart when the selected segment index collection changed.
/// </summary>
/// <param name="sender">The Sender</param>
/// <param name="e">The Event Argument</param>
internal override void SelectedSegmentsIndexes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
if (e.NewItems != null && !((ActualArea as SfChart3D).SelectionStyle == SelectionStyle3D.Single))
{
int oldIndex = PreviousSelectedIndex;
int newIndex = (int)e.NewItems[0];
if (newIndex >= 0 && (ActualArea as SfChart3D).EnableSegmentSelection)
{
// Set the SegmentSelectionBrush to newIndex segment Interior
if (newIndex < Segments.Count && this.SegmentSelectionBrush != null)
{
ChartSegment3D segment = Segments[newIndex] as ChartSegment3D;
segment.BindProperties();
foreach (var item in segment.Polygons)
{
item.Fill = this.SegmentSelectionBrush;
item.ReDraw();
}
}
if (newIndex < Segments.Count)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = this.SelectedSegment,
SelectedSegments = this.Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
NewPointInfo = Segments[newIndex].Item,
PreviousSelectedSegment = null,
PreviousSelectedSeries = null,
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.Area.PreviousSelectedSeries;
if (oldIndex != -1 && oldIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[oldIndex];
chartSelectionChangedEventArgs.OldPointInfo = Segments[oldIndex].Item;
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
this.triggerSelectionChangedEventOnLoad = true;
}
}
}
break;
case NotifyCollectionChangedAction.Remove:
if (e.OldItems != null && !((ActualArea as SfChart3D).SelectionStyle == SelectionStyle3D.Single))
{
int newIndex = (int)e.OldItems[0];
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = this.Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = PreviousSelectedIndex,
PreviousSelectedSegment = null,
PreviousSelectedSeries = this,
IsSelected = false
};
if (this.PreviousSelectedIndex != -1 && this.PreviousSelectedIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[this.PreviousSelectedIndex];
chartSelectionChangedEventArgs.OldPointInfo = Segments[PreviousSelectedIndex].Item;
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
break;
}
}
/// <summary>
/// Method used to set SegmentSelectionBrush to SelectedIndex segment
/// </summary>
/// <param name="newIndex"></param>
/// <param name="oldIndex"></param>
protected internal override void SelectedIndexChanged(int newIndex, int oldIndex)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
if (ActualArea != null && ActualArea.SelectionBehaviour != null && !ActualArea.GetEnableSeriesSelection())
{
// Reset the old segment
if (ActualArea.SelectionBehaviour.SelectionStyle == SelectionStyle.Single)
{
if (SelectedSegmentsIndexes.Contains(oldIndex))
{
SelectedSegmentsIndexes.Remove(oldIndex);
}
OnResetSegment(oldIndex);
}
if (newIndex >= 0 && ActualArea.GetEnableSegmentSelection())
{
if (!SelectedSegmentsIndexes.Contains(newIndex))
{
SelectedSegmentsIndexes.Add(newIndex);
}
dataPoint = GetDataPoint(newIndex);
if (dataPoint != null && SegmentSelectionBrush != null)
{
// Selects the adornment when the mouse is over or clicked on adornments(adornment selection).
if (adornmentInfo != null && adornmentInfo.HighlightOnSelection)
{
UpdateAdornmentSelection(newIndex);
}
// Generate pixels for the particular data point
if (Segments.Count > 0)
{
if (Segments.Count > 0)
{
GeneratePixels();
}
}
// Set the SegmentSelectionBrush to the selected segment pixels
OnBitmapSelection(selectedSegmentPixels, SegmentSelectionBrush, true);
}
// trigger the SelectionChanged event.
if (ActualArea != null && Segments.Count > 0)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = Segments[0],
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
NewPointInfo = GetDataPoint(newIndex),
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.ActualArea.PreviousSelectedSeries;
if (oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(oldIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
}
}
else if (newIndex == -1 && ActualArea != null)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
PreviousSelectedSeries = this,
PreviousSelectedSegment = null,
IsSelected = false
};
if (oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = GetDataPoint(oldIndex);
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(oldIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
}
else if (newIndex >= 0 && Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
}
}
/// <summary>
/// Method used to set segment selection brush to selected index chart segment and trigger chart selection event
/// </summary>
/// <param name="newIndex">The New Index</param>
/// <param name="oldIndex">The Old Index</param>
protected internal override void SelectedIndexChanged(int newIndex, int oldIndex)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
if (this.ActualArea != null)
{
if (newIndex >= 0 && (ActualArea as SfChart3D).EnableSegmentSelection)
{
if (Segments.Count > 0)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = this.SelectedSegment,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = Area.PreviousSelectedSeries;
if (oldIndex != -1 && oldIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = this.GetDataPoint(oldIndex);
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
this.triggerSelectionChangedEventOnLoad = true;
}
}
else if (newIndex == -1 && this.ActualArea != null)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSeries = null,
SelectedSegments = Area.SelectedSegments,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
PreviousSelectedSegment = null,
PreviousSelectedSeries = this,
IsSelected = false
};
if (oldIndex != -1 && oldIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = this.GetDataPoint(oldIndex);
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
}
}
/// <summary>
/// Updates the chart when the selected segment index collection changed.
/// </summary>
/// <param name="sender">The Sender</param>
/// <param name="e">The Event Argument</param>
internal override void SelectedSegmentsIndexes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
if (e.NewItems != null && !((ActualArea as SfChart3D).SelectionStyle == SelectionStyle3D.Single))
{
int oldIndex = PreviousSelectedIndex;
int newIndex = (int)e.NewItems[0];
if (newIndex >= 0 && (ActualArea as SfChart3D).EnableSegmentSelection)
{
if (Segments.Count > 0)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = this.SelectedSegment,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = Area.PreviousSelectedSeries;
if (oldIndex != -1 && oldIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = this.GetDataPoint(oldIndex);
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
this.triggerSelectionChangedEventOnLoad = true;
}
}
}
break;
case NotifyCollectionChangedAction.Remove:
if (e.OldItems != null && !((ActualArea as SfChart3D).SelectionStyle == SelectionStyle3D.Single))
{
int newIndex = (int)e.OldItems[0];
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSeries = null,
SelectedSegments = Area.SelectedSegments,
SelectedIndex = newIndex,
PreviousSelectedIndex = PreviousSelectedIndex,
PreviousSelectedSegment = null,
PreviousSelectedSeries = this,
IsSelected = false
};
if (this.PreviousSelectedIndex != -1 && this.PreviousSelectedIndex < Segments.Count)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = this.Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = this.GetDataPoint(this.PreviousSelectedIndex);
}
(ActualArea as SfChart3D).OnSelectionChanged(chartSelectionChangedEventArgs);
this.PreviousSelectedIndex = newIndex;
}
break;
}
}
internal override void SelectedSegmentsIndexes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
if (e.NewItems != null && ActualArea.SelectionBehaviour.SelectionStyle != SelectionStyle.Single)
{
int oldIndex = PreviousSelectedIndex;
int newIndex = (int)e.NewItems[0];
// For adornment selection implementation
if (newIndex >= 0 && ActualArea.GetEnableSegmentSelection())
{
dataPoint = GetDataPoint(newIndex);
if (dataPoint != null && SegmentSelectionBrush != null)
{
// Selects the adornment when the mouse is over or clicked on adornments(adornment selection).
if (adornmentInfo != null && adornmentInfo.HighlightOnSelection)
{
UpdateAdornmentSelection(newIndex);
}
// Generate pixels for the particular data point
if (Segments.Count > 0)
{
GeneratePixels();
}
// Set the SegmentSelectionBrush to the selected segment pixels
OnBitmapSelection(selectedSegmentPixels, SegmentSelectionBrush, true);
}
// trigger the SelectionChanged event
if (ActualArea != null && Segments.Count > 0)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = Segments[0],
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
NewPointInfo = GetDataPoint(newIndex),
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.ActualArea.PreviousSelectedSeries;
if (oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(oldIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
else if (Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
}
}
}
break;
case NotifyCollectionChangedAction.Remove:
if (e.OldItems != null && ActualArea.SelectionBehaviour.SelectionStyle != SelectionStyle.Single)
{
int newIndex = (int)e.OldItems[0];
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = PreviousSelectedIndex,
PreviousSelectedSegment = null,
PreviousSelectedSeries = this,
IsSelected = false
};
if (PreviousSelectedIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = Segments[0];
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(PreviousSelectedIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
OnResetSegment(newIndex);
PreviousSelectedIndex = newIndex;
}
break;
}
}
internal override void SelectedSegmentsIndexes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
ChartSegment prevSelectedSegment = null;
if (prevDataPoint != null && Segments.Count > 0)
{
prevSelectedSegment = (from segment in Segments
where segment is FastLineSegment &&
(segment as FastLineSegment).xChartVals.Contains(prevDataPoint.XData)
select segment).FirstOrDefault() as ChartSegment;
}
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
if (e.NewItems != null && !(ActualArea.SelectionBehaviour.SelectionStyle == SelectionStyle.Single))
{
int oldIndex = PreviousSelectedIndex;
int newIndex = (int)e.NewItems[0];
// For adornment selection implementation
if (newIndex >= 0 && ActualArea.GetEnableSegmentSelection())
{
// Selects the adornment when the mouse is over or clicked on adornments(adornment selection).
if (adornmentInfo != null && adornmentInfo.HighlightOnSelection)
{
UpdateAdornmentSelection(newIndex);
}
if (ActualArea != null && Segments.Count > 0)
{
var selectedSegment = (from segment in Segments
where segment is FastLineSegment &&
(segment as FastLineSegment).xChartVals.Contains(dataPoint.XData)
select segment).FirstOrDefault();
if (selectedSegment != null)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = selectedSegment,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
NewPointInfo = GetDataPoint(newIndex),
IsSelected = true
};
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.ActualArea.PreviousSelectedSeries;
if (oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = prevSelectedSegment;
chartSelectionChangedEventArgs.OldPointInfo = GetDataPoint(oldIndex);
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
prevDataPoint = dataPoint;
}
}
else if (Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
}
}
}
break;
case NotifyCollectionChangedAction.Remove:
if (e.OldItems != null && !(ActualArea.SelectionBehaviour.SelectionStyle == SelectionStyle.Single))
{
int newIndex = (int)e.OldItems[0];
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = PreviousSelectedIndex,
NewPointInfo = null,
OldPointInfo = GetDataPoint(PreviousSelectedIndex),
PreviousSelectedSeries = this,
IsSelected = false
};
if (PreviousSelectedIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSegment = prevSelectedSegment;
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
OnResetSegment(newIndex);
PreviousSelectedIndex = newIndex;
}
break;
}
}
/// <summary>
/// Invoked whenever the SelectionChanged event have raised.
/// </summary>
/// <param name="args"></param>
protected internal virtual void OnSelectionChanged(ChartSelectionChangedEventArgs eventArgs)
{
}
/// <summary>
/// Method used to set SegmentSelectionBrush to selectedindex chartsegment
/// </summary>
/// <param name="newIndex"/>
/// <param name="oldIndex"/>
protected internal override void SelectedIndexChanged(int newIndex, int oldIndex)
{
CircularSeriesBase circularseries = this as CircularSeriesBase;
bool isGroupTo = circularseries != null && !double.IsNaN(circularseries.GroupTo);
ChartSelectionChangedEventArgs chartSelectionChangedEventArgs;
if (ActualArea != null && ActualArea.SelectionBehaviour != null)
{
ChartSegment selectedSegment = null, oldSegment = null;
// Reset the oldIndex segment Interior
if (ActualArea.SelectionBehaviour.SelectionStyle == SelectionStyle.Single)
{
if (SelectedSegmentsIndexes.Contains(oldIndex))
{
SelectedSegmentsIndexes.Remove(oldIndex);
}
OnResetSegment(oldIndex);
}
if (oldIndex != -1 && oldIndex < ActualData.Count)
{
object oldItem = isGroupTo ? Segments[oldIndex].Item : ActualData[oldIndex];
oldSegment = Segments.Where(segment => segment.Item == oldItem).FirstOrDefault();
}
if (newIndex >= 0 && ActualArea.GetEnableSegmentSelection())
{
if (!SelectedSegmentsIndexes.Contains(newIndex))
{
SelectedSegmentsIndexes.Add(newIndex);
}
if (Segments.Count == 0)
{
triggerSelectionChangedEventOnLoad = true;
return;
}
if (newIndex < Segments.Count || newIndex < ActualData.Count)
{
// For adornment selection implementation
if (adornmentInfo is ChartAdornmentInfo && adornmentInfo.HighlightOnSelection)
{
UpdateAdornmentSelection(newIndex);
}
// Set the SegmentSelectionBrush to newIndex segment Interior
if (this is ISegmentSelectable)
{
object newItem = isGroupTo ? Segments[newIndex].Item : ActualData[newIndex];
selectedSegment = Segments.Where(segment => segment.Item == newItem).FirstOrDefault();
if (selectedSegment != null)
{
if (this.SegmentSelectionBrush != null)
{
selectedSegment.BindProperties();
}
selectedSegment.IsSelectedSegment = true;
}
}
}
if (newIndex < Segments.Count || newIndex < ActualData.Count)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = selectedSegment,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = this,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
PreviousSelectedSegment = oldSegment,
NewPointInfo = selectedSegment != null ? selectedSegment.Item : null,
OldPointInfo = oldSegment != null ? oldSegment.Item : null,
PreviousSelectedSeries = null,
IsSelected = true
};
if (this.ActualArea.PreviousSelectedSeries != null && oldIndex != -1)
{
chartSelectionChangedEventArgs.PreviousSelectedSeries = this.ActualArea.PreviousSelectedSeries;
}
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
}
else if (newIndex == -1)
{
chartSelectionChangedEventArgs = new ChartSelectionChangedEventArgs()
{
SelectedSegment = null,
SelectedSegments = Area.SelectedSegments,
SelectedSeries = null,
SelectedIndex = newIndex,
PreviousSelectedIndex = oldIndex,
PreviousSelectedSegment = oldSegment,
NewPointInfo = null,
OldPointInfo = oldSegment.Item,
PreviousSelectedSeries = this,
IsSelected = false
};
(ActualArea as SfChart).OnSelectionChanged(chartSelectionChangedEventArgs);
PreviousSelectedIndex = newIndex;
}
}
}
