/// <summary>
/// Throws exception for the row other DataRow/UnBound Row that tries to span
/// </summary>
/// <param name="range"></param>
internal void ContainsRow(CoveredCellInfo range)
{
var rows = dataGrid.RowGenerator.Items.Where(row => row.RowIndex >= range.Top && row.RowIndex <= range.Bottom);
if (!(rows.Any()))
{
return;
}
rows.ForEach(row =>
{
if (range.ContainsRow(row.RowIndex) && (row.RowType != RowType.DefaultRow && row.RowType != RowType.UnBoundRow || row.RowType == RowType.AddNewRow))
{
throw new Exception(string.Format("Given range {0} is not valid with the row type {1}", range, row.RowType));
}
// Throw exception when the invalid parent row merges.
if (this.dataGrid.DetailsViewDefinition.Count > 0 && this.dataGrid.IsInDetailsViewIndex(row.RowIndex + this.dataGrid.DetailsViewDefinition.Count))
{
foreach (var viewDefinition in this.dataGrid.DetailsViewDefinition)
{
var itemSource = this.dataGrid.DetailsViewManager.GetChildSource(row.RowData, viewDefinition.RelationalColumn);
if (DetailsViewHelper.GetChildSourceCount(itemSource) > 0)
{
throw new Exception(string.Format("Given range {0} is not valid with the details view row", range));
}
}
}
});
}
/// <summary>
/// Check whther any othe childview contains records
/// </summary>
/// <param name="record">RecordEntry</param>
/// <returns>true if any child contains record</returns>
internal static bool HasChildSource(this DetailsViewManager manager, RecordEntry record)
{
var provider = manager.DataGrid.View.GetPropertyAccessProvider();
foreach (var definition in manager.DataGrid.DetailsViewDefinition)
{
var childSource = provider.GetValue(record.Data, definition.RelationalColumn) as IEnumerable;
if (childSource != null && DetailsViewHelper.GetChildSourceCount(childSource) > 0)
{
return(true);
}
}
return(false);
}
/// <summary>
/// Decides whether to merge the adjacent parent rows based on child source of row data.
/// </summary>
/// <param name="dataGrid">The SfDataGrid.</param>
/// <param name="rowData">Specifies the data object to find the child items source.</param>
/// <returns>
/// Returns <b>true</b> if the DetialsViewDataGrid has items source; otherwise, <b>false</b>.
/// </returns>
public static bool CanMergeNextRows(this SfDataGrid dataGrid, object rowData)
{
if (!dataGrid.HideEmptyGridViewDefinition)
{
return(false);
}
foreach (var viewDefinition in dataGrid.DetailsViewDefinition)
{
var itemSource = dataGrid.DetailsViewManager.GetChildSource(rowData, viewDefinition.RelationalColumn);
if (DetailsViewHelper.GetChildSourceCount(itemSource) > 0)
{
return(false);
}
}
return(true);
}
internal static int GetChildSourceCount(object source)
{
//(WPF -37043) To avoid break the below method is called here.
return(DetailsViewHelper.GetChildSourceCount(source));
}
internal override List <int> ExpandDetailsView(int rowIndex, RecordEntry record, Dictionary <string, IEnumerable> detailsViewItemsSource)
{
var actualRowIndex = rowIndex;
record.IsExpanded = true;
ResetExpandedLevel(this.DataGrid);
var count = 0;
var updateDataRow = new List <int>();
var DetailsViewDefinition = this.DataGrid.DetailsViewDefinition;
// If the grid is DetailsViewDataGrid, need to access SourceDataGrid's DetailsViewDefinition(Since NotifyListener is assigned for SourceDataGrid's DetailsViewDefinition only)
if (this.DataGrid is DetailsViewDataGrid && this.DataGrid.NotifyListener != null)
{
DetailsViewDefinition = this.DataGrid.NotifyListener.SourceDataGrid.DetailsViewDefinition;
}
foreach (var detailsView in DetailsViewDefinition)
{
actualRowIndex++;
var gridViewDefinition = detailsView as GridViewDefinition;
IEnumerable itemsSource;
if (detailsViewItemsSource.TryGetValue(gridViewDefinition.RelationalColumn, out itemsSource) && itemsSource != null)
{
CreateOrUpdateDetailsViewDataRow(this.DataGrid.RowGenerator.Items, actualRowIndex, record, detailsView, count, itemsSource);
}
else if (!this.DataGrid.HideEmptyGridViewDefinition)
{
CreateOrUpdateDetailsViewDataRow(this.DataGrid.RowGenerator.Items, actualRowIndex, record, detailsView, count, null);
}
// WPF-20080 - When HideEmptyGridViewDefinition is true and there is no records in details view, need to hide DetailsViewDataRow
else
{
// WPF-19997 - Create childView only if HideEmptyGridViewDefinition
if (!record.ChildViews.ContainsKey(gridViewDefinition.RelationalColumn))
{
record.ChildViews.Add(gridViewDefinition.RelationalColumn, new NestedRecordEntry(record, record.Level)
{
NestedLevel = (actualRowIndex - rowIndex) - 1
});
ResetTopLevelGroupCache();
}
count++;
updateDataRow.Add(actualRowIndex);
this.DataGrid.VisualContainer.RowHeights.SetHidden(actualRowIndex, actualRowIndex, true);
continue;
}
updateDataRow.Add(actualRowIndex);
var view = record.ChildViews[gridViewDefinition.RelationalColumn];
if (view != null && !this.DataGrid.HideEmptyGridViewDefinition)
{
this.DataGrid.VisualContainer.RowHeights.SetHidden(actualRowIndex, actualRowIndex, false);
}
else if (view != null && DetailsViewHelper.GetChildSourceCount(view.View.SourceCollection) > 0)
{
this.DataGrid.VisualContainer.RowHeights.SetHidden(actualRowIndex, actualRowIndex, false);
}
else
{
this.DataGrid.VisualContainer.RowHeights.SetHidden(actualRowIndex, actualRowIndex, true);
}
count++;
}
if (this.DataGrid.HideEmptyGridViewDefinition)
{
if (record.ChildViews.Count == this.DataGrid.DetailsViewDefinition.Count)
{
var isExpanded = record.ChildViews.Any(view => view.Value.View != null && DetailsViewHelper.GetChildSourceCount(view.Value.View.SourceCollection) > 0);
if (!isExpanded)
{
var recordIndex = this.DataGrid.ResolveToRecordIndex(rowIndex);
this.DataGrid.DetailsViewManager.CollapseDetailsViewAt(recordIndex);
}
}
}
return(updateDataRow);
}
internal override void ExpandNestedLinesofRecord(IEnumerable itemsSource, LineSizeCollection lines, GridViewDefinition gridViewDefinition, RecordEntry recordEntry, int level)
{
if (gridViewDefinition.DataGrid.DetailsViewDefinition != null &&
gridViewDefinition.DataGrid.DetailsViewDefinition.Any())
{
var rowIndex = 1;
foreach (var item in itemsSource)
{
var actualRowIndex = rowIndex;
int index = 0;
foreach (var nestedViewDefinition in gridViewDefinition.DataGrid.DetailsViewDefinition)
{
if (nestedViewDefinition is GridViewDefinition)
{
index++;
var nestedgridViewDefinition = nestedViewDefinition as GridViewDefinition;
actualRowIndex++;
int repeatValueCount;
var isHidden = lines.GetHidden(actualRowIndex, out repeatValueCount);
LineSizeCollection nestedLines = null;
if (!isHidden)
{
nestedLines = lines.GetNestedLines(actualRowIndex) as LineSizeCollection;
}
int nestedLevel = recordEntry != null && recordEntry.ChildViews != null && recordEntry.ChildViews.ContainsKey(gridViewDefinition.RelationalColumn) ? recordEntry.ChildViews[gridViewDefinition.RelationalColumn].ExpandedLevel : level;
if (nestedLines == null)
{
var detailsViewLinesitemsource = GetChildSource((item is RecordEntry) ? (item as RecordEntry).Data : item, nestedgridViewDefinition.RelationalColumn);
int count = 0;
// If need to expand inner levels also, DetailsViewDefinition count is added with SourceCollection count
if (nestedLevel > this.DataGrid.DetailsViewManager.GetDefinitionLevel(nestedgridViewDefinition) || nestedLevel == -1)
{
count = detailsViewLinesitemsource != null?DetailsViewHelper.GetChildSourceCount(detailsViewLinesitemsource) * (nestedgridViewDefinition.DataGrid.DetailsViewDefinition.Count + 1) : 0;
}
else
{
count = detailsViewLinesitemsource != null?DetailsViewHelper.GetChildSourceCount(detailsViewLinesitemsource) : 0;
}
// While creating lines, LineCount is set by considering DetailsViewDataRow also. But if we HideEmptyGridViewDefintion is true, we need to hide it(RowHeight = 0)
if (nestedgridViewDefinition.DataGrid.HideEmptyGridViewDefinition && count == 0)
{
lines.SetHidden(actualRowIndex, actualRowIndex, true);
continue;
}
//AddNewRow, StackedHeaders, UnBoundRows and TableSummaryRows count added here
count += nestedgridViewDefinition.DataGrid.StackedHeaderRows != null ? nestedgridViewDefinition.DataGrid.StackedHeaderRows.Count : 0;
count += nestedgridViewDefinition.DataGrid.UnBoundRows != null ? nestedgridViewDefinition.DataGrid.UnBoundRows.Count : 0;
count += nestedgridViewDefinition.DataGrid.TableSummaryRows != null ? nestedgridViewDefinition.DataGrid.TableSummaryRows.Count : 0;
count += nestedgridViewDefinition.DataGrid.AddNewRowPosition != AddNewRowPosition.None ? 1 : 0;
nestedLines = new LineSizeCollection {
LineCount = count + 1, DefaultLineSize = nestedgridViewDefinition.DataGrid.RowHeight
};
}
// Below code is to set the PaddingDistance based on GridViewDefintion level
if (nestedgridViewDefinition.DataGrid.AllowDetailsViewPadding)
{
SetDetailsViewPadding(nestedLines, (item is RecordEntry) ? (item as RecordEntry).Data : item, rowIndex, actualRowIndex, gridViewDefinition.DataGrid);
}
if (nestedLevel > this.DataGrid.DetailsViewManager.GetDefinitionLevel(nestedgridViewDefinition) || nestedLevel == -1)
{
ExpandNestedLines((item is RecordEntry) ? (item as RecordEntry).Data : item, nestedLines, nestedgridViewDefinition, (item is RecordEntry) ? item as RecordEntry : null, nestedLevel);
}
lines.SetNestedLines(actualRowIndex, nestedLines);
lines.SetHidden(actualRowIndex, actualRowIndex, false);
}
}
rowIndex += gridViewDefinition.DataGrid.DetailsViewDefinition.Count + 1;
}
}
}
internal override void ExpandAllDetailsViewOfRecord(int level, RecordEntry record, int rowIndex)
{
var actualRowIndex = rowIndex;
int index = 0;
foreach (var viewDefinition in this.DataGrid.DetailsViewDefinition)
{
actualRowIndex++;
if (viewDefinition is GridViewDefinition)
{
index++;
var gridViewDefinition = viewDefinition as GridViewDefinition;
int repeatValueCount;
var isHidden = this.DataGrid.VisualContainer.RowHeights.GetHidden(actualRowIndex, out repeatValueCount);
LineSizeCollection lines = null;
if (!isHidden)
{
lines = this.DataGrid.VisualContainer.RowHeights.GetNestedLines(actualRowIndex) as LineSizeCollection;
}
//WPF-18239 - If nested lines are reset, lines will be null(even though it is visible).
// Below code is added to create nested lines
if (lines == null)
{
var itemsource = GetChildSource(record.Data, gridViewDefinition.RelationalColumn);
int count = 0;
// If need to expand inner levels also, DetailsViewDefinition count is added with SourceCollection count
if (level > 1 || level == -1)
{
count = itemsource != null?DetailsViewHelper.GetChildSourceCount(itemsource) * (gridViewDefinition.DataGrid.DetailsViewDefinition.Count + 1) : 0;
}
else
{
count = itemsource != null?DetailsViewHelper.GetChildSourceCount(itemsource) : 0;
}
if (this.DataGrid.HideEmptyGridViewDefinition && count == 0)
{
// WPF-19997 - Create childView only if HideEmptyGridViewDefinition
if (!record.ChildViews.ContainsKey(gridViewDefinition.RelationalColumn))
{
record.ChildViews.Add(gridViewDefinition.RelationalColumn, new NestedRecordEntry(record, record.Level)
{
NestedLevel = (actualRowIndex - rowIndex) - 1
});
this.ResetTopLevelGroupCache();
}
continue;
}
// AddNewRow, StackedHeaders, UnBoundRows and TableSummaryRows count added here
count += gridViewDefinition.DataGrid.StackedHeaderRows != null ? gridViewDefinition.DataGrid.StackedHeaderRows.Count : 0;
count += gridViewDefinition.DataGrid.UnBoundRows != null ? gridViewDefinition.DataGrid.UnBoundRows.Count : 0;
count += gridViewDefinition.DataGrid.TableSummaryRows != null ? gridViewDefinition.DataGrid.TableSummaryRows.Count : 0;
count += gridViewDefinition.DataGrid.AddNewRowPosition != AddNewRowPosition.None ? 1 : 0;
count += gridViewDefinition.DataGrid.FilterRowPosition != FilterRowPosition.None ? 1 : 0;
// DefaultLineSize should be set based on the SourceDataGrid's RowHeight
lines = new LineSizeCollection {
LineCount = count + 1, DefaultLineSize = gridViewDefinition.DataGrid.RowHeight
};
}
// Below code is to set the PaddingDistance based on GridViewDefintion level
if (this.DataGrid.AllowDetailsViewPadding)
{
SetDetailsViewPadding(lines, record.Data, rowIndex, actualRowIndex, this.DataGrid);
}
// Need to expand nested lines also if level is greater than 1 or need to expand all records (level is -1)
if (level > 1 || level == -1)
{
ExpandNestedLines(record.Data, lines, gridViewDefinition, record, level);
}
this.DataGrid.VisualContainer.RowHeights.SetNestedLines(actualRowIndex, lines);
this.DataGrid.VisualContainer.RowHeights.SetHidden(actualRowIndex, actualRowIndex, false);
if (!record.ChildViews.ContainsKey(gridViewDefinition.RelationalColumn))
{
record.ChildViews.Add(gridViewDefinition.RelationalColumn, new NestedRecordEntry(record, record.Level)
{
NestedLevel = (actualRowIndex - rowIndex) - 1
});
ResetTopLevelGroupCache();
}
record.ChildViews[gridViewDefinition.RelationalColumn].ExpandedLevel = level;
// Set IsNestedLevelExpanded if level is -1 (ExpandAllDetailsView is called)
if (level == -1)
{
record.ChildViews[gridViewDefinition.RelationalColumn].IsNestedLevelExpanded = true;
}
else
{
record.ChildViews[gridViewDefinition.RelationalColumn].IsNestedLevelExpanded = false;
}
}
}
}
/// <summary>
/// Refresh the merged row within the range.
/// </summary>
/// <param name="dr"></param>
internal void RefreshMergedRows(DataRowBase dr)
{
var coveredCellInfoCollection = this.dataGrid.CoveredCells.GetCoveredCellsRange(dr);
if (coveredCellInfoCollection.Count == 0)
{
return;
}
foreach (var coveredRange in coveredCellInfoCollection)
{
var invalidateRows = this.dataGrid.RowGenerator.Items.FindAll(item => item.RowIndex <= coveredRange.Bottom && item.RowIndex >= coveredRange.Top && (item.RowType == RowType.DefaultRow || item.RowType == RowType.UnBoundRow));
foreach (var invalidateRow in invalidateRows)
{
if (invalidateRow.RowType == RowType.AddNewRow && (invalidateRow.RowIndex == coveredRange.Top || invalidateRow.RowIndex == coveredRange.Bottom))
{
throw new Exception(String.Format("AddNewRow cells cannot be merged {0}", coveredRange));
}
if (!invalidateRow.IsSpannedRow)
{
this.InitializeMergedRow(invalidateRow);
}
invalidateRow.VisibleColumns.ForEach(r =>
{
var detailsViewDefinitionCount = this.dataGrid.DetailsViewDefinition.Count;
if (detailsViewDefinitionCount != 0 && this.dataGrid.IsInDetailsViewIndex(invalidateRow.RowIndex + detailsViewDefinitionCount))
{
var throwException = false;
foreach (var viewDefinition in this.dataGrid.DetailsViewDefinition)
{
var itemSource = this.dataGrid.DetailsViewManager.GetChildSource(dr.RowData, viewDefinition.RelationalColumn);
if (DetailsViewHelper.GetChildSourceCount(itemSource) > 0)
{
throwException = true;
break;
}
}
if (invalidateRow.RowIndex != coveredRange.Bottom && (throwException || !dataGrid.HideEmptyGridViewDefinition))
{
throw new Exception(String.Format("Given range is not valid {0} with the details view row", coveredRange));
}
}
if (r.ColumnIndex >= coveredRange.Left && r.ColumnIndex <= coveredRange.Right && r.GridColumn != null && !r.GridColumn.IsHidden)
{
if (r.ColumnVisibility == Visibility.Collapsed)
{
r.ColumnVisibility = Visibility.Visible;
}
}
}
);
if (!this.dataGrid.IsInDetailsViewIndex(invalidateRow.RowIndex))
{
invalidateRow.WholeRowElement.ItemsPanel.InvalidateMeasure();
invalidateRow.WholeRowElement.ItemsPanel.InvalidateArrange();
#if WPF
if (this.dataGrid.useDrawing)
{
invalidateRow.WholeRowElement.ItemsPanel.InvalidateVisual();
}
#endif
}
}
}
}