/// <summary>
/// Clears the contents of our columns and resets our state.
/// </summary>
public void Clear()
{
foreach (ColumnManager manager in this.columns)
{
manager.StackPanel.Children.Clear();
}
this.rows = new Collection <DataBoundRow>();
this.hashGroupings.Clear();
this.groupingTitles.Clear();
this.lastRow = null;
this.firstVisibleItemIndex = 0;
this.lastVisibleItemIndex = -1;
SummaryManager summaryMgr = this.columns[0].SummaryManager;
if (summaryMgr != null && summaryMgr.MainPanel != null)
{
summaryMgr.MainPanel.Visibility = Visibility.Collapsed;
}
}
/// <summary>
/// Updates the summary for Look ahead/behind columns.
/// </summary>
/// <param name="dataContext">The data context for summary.</param>
/// <param name="rowIndex">Row index for the current binding.</param>
/// <param name="behindSummary">Specifies if the summary is for look behind or not.</param>
internal void UpdateSummary(object dataContext, int rowIndex, bool behindSummary)
{
if (this.columns.Count > 0 && this.columns[0].SummaryManager != null)
{
SummaryManager summaryManager = this.columns[0].SummaryManager;
Panel dataTemplate;
if (summaryManager.MainPanel.Children.Count == 0)
{
object templateObject = DataTemplateHelper.LoadContent(summaryManager.CellTemplate);
dataTemplate = templateObject as Panel;
dataTemplate.DataContext = dataContext;
summaryManager.MainPanel.Children.Insert(0, dataTemplate);
}
else
{
dataTemplate = summaryManager.MainPanel.Children[0] as Panel;
dataTemplate.DataContext = dataContext;
}
dataTemplate.Tag = String.Format(System.Globalization.CultureInfo.CurrentCulture, WrapDataGridResources.SummaryCellTemplateTagFormat, rowIndex + (behindSummary ? -1 : 1));
}
}
/// <summary>
/// Creates Look behind column.
/// </summary>
private void CreateLookBehindColumns()
{
if (this.lookBehindCellTemplate == null)
{
throw new ArgumentNullException("Look behind cell template must be defined", (Exception)null);
}
if (this.lookBehindSummaryCellTemplate == null)
{
throw new ArgumentNullException("Look behind summary cell template must be defined", (Exception)null);
}
this.lookBehindView = new LookBehindView();
this.lookBehindColumn = new ColumnManager();
Grid lookBehindLayout = DataTemplateHelper.LoadContent((this.layoutRoot.Resources["LookBehindCellTemplateGridLayout"] as DataTemplate)) as Grid;
lookBehindLayout.SetValue(Grid.ColumnSpanProperty, this.WrapDataGridColumns.Count + 1);
DataTemplate cellTemplate = this.layoutRoot.Resources["LookBehindCellTemplate"] as DataTemplate;
StackPanel summaryPanel = new StackPanel();
summaryPanel.SetValue(Grid.RowProperty, 0);
summaryPanel.SetValue(Grid.ColumnProperty, 0);
StackPanel columnPanel = new StackPanel();
columnPanel.HorizontalAlignment = HorizontalAlignment.Right;
columnPanel.Orientation = Orientation.Horizontal;
columnPanel.SetValue(Grid.RowProperty, 0);
columnPanel.SetValue(Grid.ColumnProperty, 1);
SummaryManager summary = new SummaryManager();
summary.CellTemplate = this.lookBehindSummaryCellTemplate;
summary.MainPanel = summaryPanel;
this.lookBehindColumn.SetValue(Grid.ColumnSpanProperty, 5);
this.lookBehindColumn.MasterCellTemplate = cellTemplate;
this.lookBehindColumn.CellTemplate = this.lookBehindCellTemplate;
this.lookBehindColumn.StackPanel = columnPanel;
this.lookBehindColumn.SummaryManager = summary;
this.lookBehindColumn.GridLayout = lookBehindLayout;
}
