/// <summary>
/// Ensure that indent and expander, row header columns does not merge.
/// </summary>
/// <param name="column"></param>
/// <returns></returns>
internal bool CanQueryColumn(DataColumnBase column)
{
if (column.Renderer != null && column.Renderer != this.dataGrid.CellRenderers["RowHeader"] && !column.IsIndentColumn && !column.IsExpanderColumn)
{
return(true);
}
return(false);
}
public override void OnInitializeEditElement(DataColumnBase dataColumn, GridRowHeaderCell uiElement, object dataContext)
{
RowColumnIndex rowColumnIndex = new RowColumnIndex(dataColumn.RowIndex, dataColumn.ColumnIndex);
if (uiElement is GridRowHeaderCell)
{
(uiElement as GridRowHeaderCell).RowIndex = rowColumnIndex.RowIndex;
}
}
protected override void InitializeCellStyle(DataColumnBase dataColumn, object record)
{
var cell = dataColumn.ColumnElement;
var cellRowColumnIndex = new RowColumnIndex(dataColumn.RowIndex, dataColumn.ColumnIndex);
var element = cell as GridRowHeaderCell;
if (element != null)
{
element.RowIndex = cellRowColumnIndex.RowIndex;
}
base.InitializeCellStyle(dataColumn, record);
}
/// <summary>
/// Disposes all the resources used by the <see cref="Syncfusion.UI.Xaml.Grid.GridDetailsViewExpanderCell"/> class.
/// </summary>
/// <param name="isDisposing">Indicates whether the call is from Dispose method or from a finalizer.</param>
protected virtual void Dispose(bool isDisposing)
{
if (isdisposed)
{
return;
}
if (isDisposing)
{
DataGrid = null;
columnBase = null;
}
isdisposed = true;
}
private bool CheckAvailablity(int index, bool forIndentColumn)
{
if (index >= this.DataGrid.VisualContainer.ColumnCount)
{
return(false);
}
if (forIndentColumn && ((index < (this.DataGrid.View != null ? this.DataGrid.View.GroupDescriptions.Count : 0)) || (this.DataGrid.ShowRowHeader && index <= (this.DataGrid.View != null ? this.DataGrid.View.GroupDescriptions.Count : 0))))
{
if (index > this.RowLevel && (this.RowType == RowType.CaptionCoveredRow || this.RowType == RowType.SummaryCoveredRow || this.RowType == RowType.TableSummaryCoveredRow))
{
return(false);
}
}
var cc = this.CoveredCells.FirstOrDefault(cell => cell.Left == index);
DataColumnBase dataColumn = this.VisibleColumns.FirstOrDefault(column => column.ColumnIndex == index);
if (dataColumn != null)
{
if (dataColumn.ColumnVisibility == Visibility.Collapsed)
{
dataColumn.ColumnVisibility = Visibility.Visible;
}
dataColumn.IsEnsured = true;
var columnElement = dataColumn.ColumnElement as GridCell;
if (columnElement != null)
{
columnElement.GridCellRegion = "NormalCell";
}
if (this.RowType != Grid.RowType.CaptionRow && this.RowType != Grid.RowType.SummaryRow && (dataColumn.ColumnElement is GridIndentCell) && dataColumn.IndentColumnType == IndentColumnType.AfterExpander)
{
dataColumn.ColumnVisibility = Visibility.Collapsed;
}
return(true);
}
else if (cc != null && this.DataGrid.Columns.Count > 0)
{
var dc = CreateColumn(cc, index, cc.RowSpan, cc.Right - cc.Left);
dc.IsEnsured = true;
this.VisibleColumns.Add(dc);
}
else if (this.DataGrid.Columns.Count > 0 && this.RowRegion != Grid.RowRegion.Header)
{
var dc = CreateColumn(null, index, 0, 0);
dc.IsEnsured = true;
this.VisibleColumns.Add(dc);
}
return(false);
}
private void ResetLastColumnBorderThickness(DataColumnBase column, bool isLast)
{
if (column != null)
{
bool isTableSummaryRow = this.RowType == Grid.RowType.TableSummaryRow || this.RowType == Grid.RowType.TableSummaryCoveredRow;
if (isLast)
{
(column.ColumnElement as GridCell).GridCellRegion = "LastColumnCell";
}
else
{
(column.ColumnElement as GridCell).GridCellRegion = "NormalCell";
}
}
}
protected internal override double GetRowSize(DataColumnBase dataColumn, bool lineNull)
{
var index = dataColumn.RowIndex;
if (lineNull)
{
DoubleSpan[] CurrentPos = this.DataGrid.VisualContainer.ScrollRows.RangeToRegionPoints(index, index, true);
return(CurrentPos[1].Length);
}
var line = GetRowVisibleLineInfo(index);
if (line == null)
{
return(0);
}
return(line.Size);
}
private void UpdateColumn(DataColumnBase dc, int index)
{
if (index < 0 || index >= this.DataGrid.VisualContainer.ColumnCount)
{
dc.ColumnVisibility = Visibility.Collapsed;
}
else
{
dc.ColumnIndex = index;
var columnElement = dc.ColumnElement as GridCell;
if (columnElement != null)
{
columnElement.GridCellRegion = "NormalCell";
}
dc.GridColumn = this.DataGrid.Columns[ResolveToGridColumnIndex(index)];
if (dc.ColumnVisibility == Visibility.Collapsed)
{
dc.ColumnVisibility = Visibility.Visible;
}
dc.ColumnElement.ClearValue(FrameworkElement.DataContextProperty);
//dc.ColumnElement.DataContext = this.RowData;
dc.UpdateBinding(this.RowData);
}
}
/// <summary>
/// Applies the Hidden State VSM if the Column in hidden.
/// </summary>
/// <param name="column">The column.</param>
private void UpdateVisualState(bool isPreviousColumnHidden, bool isNextColumnHidden, DataColumnBase columnBase)
{
var columnElement = (GridHeaderCellControl)columnBase.ColumnElement;
if (isPreviousColumnHidden && isNextColumnHidden)
{
VisualStateManager.GoToState(columnElement, "HiddenState", true);
}
else if (isPreviousColumnHidden)
{
VisualStateManager.GoToState(columnElement, "PreviousColumnHidden", true);
}
else if (isNextColumnHidden)
{
VisualStateManager.GoToState(columnElement, "LastColumnHidden", true);
}
else
{
VisualStateManager.GoToState(columnElement, "NormalState", true);
}
}
protected override void OnRenderCell(System.Windows.Media.DrawingContext dc, Rect cellRect, DataColumnBase dataColumnBase, object dataContext)
{
}
private void SetIndentColumnType(DataColumnBase indentColumn)
{
var group = this.RowData as Group;
if (group == null)
{
return;
}
int lastGroupLevel = -1;
if (!group.IsExpanded)
{
bool isLastRow = this.DataGrid.RowGenerator.IsLastRow(group, this.RowIndex, ref lastGroupLevel);
bool isLastGroup = this.DataGrid.RowGenerator.IsLastGroup(group);
lastGroupLevel += (this.DataGrid.ShowRowHeader ? 1 : 0);
if (indentColumn.ColumnIndex == ((this.Level + (this.DataGrid.ShowRowHeader ? 1 : 0)) - 1))
{
indentColumn.IndentColumnType = IndentColumnType.InExpanderCollapsed;
if (this.RowType == RowType.CaptionCoveredRow && indentColumn.ColumnElement.Visibility == Visibility.Collapsed)
{
indentColumn.ColumnVisibility = Visibility.Visible;
}
}
else if (indentColumn.ColumnIndex < (this.Level + (this.DataGrid.ShowRowHeader ? 1 : 0) - 1))
{
indentColumn.IndentColumnType = indentColumn.ColumnIndex < lastGroupLevel ? (isLastRow ? IndentColumnType.InLastGroupRow : IndentColumnType.BeforeExpander) : (isLastGroup ? IndentColumnType.InLastGroupRow : IndentColumnType.BeforeExpander);
if (this.RowType == RowType.CaptionCoveredRow && indentColumn.ColumnElement.Visibility == Visibility.Collapsed)
{
indentColumn.ColumnVisibility = Visibility.Visible;
}
}
else
{
indentColumn.IndentColumnType = IndentColumnType.AfterExpander;
if (this.RowType == RowType.CaptionCoveredRow && indentColumn.ColumnElement.Visibility == Visibility.Visible)
{
indentColumn.ColumnVisibility = Visibility.Collapsed;
}
}
}
else
{
if (indentColumn.ColumnIndex == (this.Level + (this.DataGrid.ShowRowHeader ? 1 : 0) - 1))
{
indentColumn.IndentColumnType = IndentColumnType.InExpanderExpanded;
if (this.RowType == RowType.CaptionCoveredRow && indentColumn.ColumnElement.Visibility == Visibility.Collapsed)
{
indentColumn.ColumnVisibility = Visibility.Visible;
}
}
else if (indentColumn.ColumnIndex < (this.Level + (this.DataGrid.ShowRowHeader ? 1 : 0) - 1))
{
indentColumn.IndentColumnType = IndentColumnType.BeforeExpander;
if (this.RowType == RowType.CaptionCoveredRow && indentColumn.ColumnElement.Visibility == Visibility.Collapsed)
{
indentColumn.ColumnVisibility = Visibility.Visible;
}
}
else
{
indentColumn.IndentColumnType = IndentColumnType.AfterExpander;
if (this.RowType == RowType.CaptionCoveredRow && indentColumn.ColumnElement.Visibility == Visibility.Visible)
{
indentColumn.ColumnVisibility = Visibility.Collapsed;
}
}
}
}
/// <summary>
/// Gets CoveredCellInfo for the specified DataColumnBase.
/// </summary>
/// <param name="dc">
/// Specifies the corresponding DataColumnBase get the CoveredCellInfo.
/// </param>
/// <returns>
/// Returns the range based on DataColumnBase row and column index.
/// </returns>
public CoveredCellInfo GetCoveredCellInfo(DataColumnBase dc)
{
return(GetCoveredCellInfo(dc.RowIndex, dc.ColumnIndex));
}
/// <summary>
/// Raise query for the each column
/// </summary>
/// <param name="dataGrid"></param>
/// <param name="dc"></param>
internal void EnsureMergedCells(DataRowBase dr, DataColumnBase dc, object dataContext)
{
if (dc.GridColumn == null)
{
return;
}
var coveredCell = dataGrid.CoveredCells.GetCoveredCell(dc.RowIndex, dc.ColumnIndex, dc.GridColumn, dataContext);
if (coveredCell == null)
{
return;
}
//Throws exception for invalid range with rows.
this.dataGrid.CoveredCells.ContainsRow(coveredCell);
// Throws exception for invalid range with columns.
this.dataGrid.CoveredCells.ContainsColumn(dr, coveredCell);
if (!dc.GridColumn.hasCellTemplate &&
(dc.GridColumn.hasCellTemplateSelector ||
(dc.GridColumn.IsTemplate && ((dc.GridColumn as GridTemplateColumn).hasEditTemplateSelector || dataGrid.hasCellTemplateSelector))))
// Column has cell template selector will not get merge.
{
this.dataGrid.CoveredCells.Remove(coveredCell);
return;
}
// Raise exception for the invalid range of unbound row.
if (dr.RowType == RowType.UnBoundRow)
{
var bottomIndex = coveredCell.Bottom;
var topIndex = coveredCell.Top;
RowRegion topRowRegion = dr.RowRegion;
if (dataGrid.RowGenerator.Items.Find(row => row.RowIndex == topIndex) != null)
{
topRowRegion = dataGrid.RowGenerator.Items.Find(row => row.RowIndex == topIndex).RowRegion;
}
RowRegion bottomRowRegion = dr.RowRegion;
if (dataGrid.RowGenerator.Items.Find(row => row.RowIndex == bottomIndex) != null)
{
bottomRowRegion = dataGrid.RowGenerator.Items.Find(row => row.RowIndex == bottomIndex).RowRegion;
}
if (!dataGrid.IsUnBoundRow(bottomIndex) || !dataGrid.IsUnBoundRow(topIndex) || topRowRegion != bottomRowRegion)
{
throw new Exception(string.Format("Given range {0} is not valid", coveredCell));
}
}
dr.isSpannedRow = true;
dc.isSpannedColumn = true;
// Reset the covered cell range by bottom for Frozen rows.
if (dataGrid.FrozenRowsCount > 0 && coveredCell.Top < dataGrid.VisualContainer.FrozenRows)
{
CoveredCellInfo newCoveredCell = null;
dataGrid.CoveredCells.Remove(coveredCell);
if (coveredCell.Top < dataGrid.VisualContainer.FrozenRows && coveredCell.Bottom >= dataGrid.VisualContainer.FrozenRows)
{
newCoveredCell = new CoveredCellInfo(coveredCell.Left,
coveredCell.Right,
coveredCell.Top,
coveredCell.Bottom < dataGrid.VisualContainer.FrozenRows ? coveredCell.Bottom : dataGrid.VisualContainer.FrozenRows - 1);
}
else
{
newCoveredCell = coveredCell;
}
dataGrid.CoveredCells.Add(newCoveredCell);
this.UpdateMappedRowIndex(dr, dr.RowIndex);
dataGrid.RowGenerator.Items.ForEach(row =>
{
if (newCoveredCell != null && row.RowIndex > newCoveredCell.Bottom && row.RowIndex <= coveredCell.Bottom)
{
dataGrid.MergedCellManager.ResetCoveredRows(row);
}
}
);
}
// Reset the covered cell range by top for footer rows.
else if (dataGrid.FooterRowsCount > 0 && coveredCell.Bottom >= (this.dataGrid.VisualContainer.RowCount - this.dataGrid.VisualContainer.FooterRows) &&
coveredCell.Bottom < this.dataGrid.VisualContainer.RowCount)
{
CoveredCellInfo newCoveredCell = null;
dataGrid.CoveredCells.Remove(coveredCell);
if (coveredCell.Top < (dataGrid.VisualContainer.RowCount - dataGrid.VisualContainer.FooterRows))
{
newCoveredCell = new CoveredCellInfo(coveredCell.Left,
coveredCell.Right,
coveredCell.Top < (dataGrid.VisualContainer.RowCount - dataGrid.VisualContainer.FooterRows) ?
(dataGrid.VisualContainer.RowCount - dataGrid.VisualContainer.FooterRows) : coveredCell.Top,
coveredCell.Bottom);
}
else
{
newCoveredCell = coveredCell;
}
dataGrid.CoveredCells.Add(newCoveredCell);
this.UpdateMappedRowIndex(dr, dr.RowIndex);
dataGrid.RowGenerator.Items.ForEach(row =>
{
if (newCoveredCell != null && row.RowIndex < newCoveredCell.Top && row.RowIndex >= coveredCell.Top)
{
dataGrid.MergedCellManager.ResetCoveredRows(row);
}
}
);
}
// Reset the covered cell range by right for frozen columns
if (dataGrid.FrozenColumnCount > 0 && dc.ColumnIndex < dataGrid.VisualContainer.FrozenColumns)
{
CoveredCellInfo newCoveredCell = null;
dataGrid.CoveredCells.Remove(coveredCell);
if (coveredCell.Left < dataGrid.VisualContainer.FrozenColumns && coveredCell.Right >= dataGrid.VisualContainer.FrozenColumns)
{
newCoveredCell = new CoveredCellInfo(coveredCell.Left,
coveredCell.Right < dataGrid.VisualContainer.FrozenColumns ? coveredCell.Right : dataGrid.VisualContainer.FrozenColumns - 1,
coveredCell.Top,
coveredCell.Bottom);
}
else
{
newCoveredCell = coveredCell;
}
dataGrid.CoveredCells.Add(newCoveredCell);
this.UpdateMappedRowIndex(dr, dr.RowIndex);
dataGrid.RowGenerator.Items.ForEach(row =>
{
if (newCoveredCell != null && row.RowIndex >= coveredCell.Top && row.RowIndex <= coveredCell.Bottom)
{
row.VisibleColumns.ForEach(column =>
{
if (column.ColumnIndex > newCoveredCell.Right && column.ColumnIndex <= coveredCell.Right)
{
column.isSpannedColumn = false;
column.ColumnVisibility = Visibility.Visible;
}
});
}
}
);
}
// Reset the covered cell range by left for frozen columns
else if (dataGrid.FooterColumnCount > 0 && coveredCell.Right >= (dataGrid.VisualContainer.ColumnCount - dataGrid.VisualContainer.FooterColumns) && coveredCell.Right < dataGrid.VisualContainer.ColumnCount)
{
CoveredCellInfo newCoveredCell = null;
dataGrid.CoveredCells.Remove(coveredCell);
if ((dataGrid.VisualContainer.ColumnCount - dataGrid.VisualContainer.FooterColumns) >= coveredCell.Left && coveredCell.Right <= dataGrid.VisualContainer.ColumnCount)
{
newCoveredCell = new CoveredCellInfo(coveredCell.Left,
coveredCell.Right < (dataGrid.VisualContainer.ColumnCount - dataGrid.VisualContainer.FooterColumns) ?
coveredCell.Right : dataGrid.VisualContainer.ColumnCount - dataGrid.VisualContainer.FooterColumns,
coveredCell.Top, coveredCell.Bottom);
}
else
{
newCoveredCell = coveredCell;
}
dataGrid.CoveredCells.Add(newCoveredCell);
this.UpdateMappedRowIndex(dr, dr.RowIndex);
dataGrid.RowGenerator.Items.ForEach(row =>
{
if (newCoveredCell != null && row.RowIndex >= coveredCell.Top && row.RowIndex <= coveredCell.Bottom)
{
row.VisibleColumns.ForEach(column =>
{
if (column.ColumnIndex > newCoveredCell.Right && column.ColumnIndex <= coveredCell.Right)
{
column.isSpannedColumn = false;
column.ColumnVisibility = Visibility.Visible;
}
});
}
}
);
}
}
public override void OnUpdateEditBinding(DataColumnBase dataColumn, GridRowHeaderCell element, object dataContext)
{
}
/// <summary>
/// Updates the Cell border state for footer columns and before footer columns.
/// </summary>
/// <param name="dc"></param>
internal override void UpdateFixedColumnState(DataColumnBase dc)
{
if (this.DataGrid.VisualContainer.FooterColumns == 0 || dc.ColumnIndex <= this.DataGrid.VisualContainer.FrozenColumns - 1)
{
//When footer column is set to zero then all the cells would be normal cell.
if (this.RowType != Grid.RowType.HeaderRow)
{
if (dc.ColumnIndex == this.DataGrid.VisualContainer.FrozenColumns - 1)
{
dc.OnGridCellRegionChanged(GridCellRegion.FrozenColumnCell);
}
else
{
dc.OnGridCellRegionChanged(GridCellRegion.NormalCell);
}
}
else
{
if (dc.ColumnIndex == this.DataGrid.VisualContainer.FrozenColumns - 1)
{
(dc.ColumnElement as GridHeaderCellControl).GridCellRegion = GridCellRegion.FrozenColumnCell;
}
else
{
(dc.ColumnElement as GridHeaderCellControl).GridCellRegion = GridCellRegion.NormalCell;
}
}
return;
}
var columnCount = this.DataGrid.VisualContainer.ColumnCount;
int previousColumnIndex = this.GetPreviousColumnIndex(columnCount - this.DataGrid.FooterColumnCount);
//lastCellIndex is used to draw right border for the last body column when all the footer columns are hidden.
var lastCellIndex = this.DataGrid.GetLastColumnIndex();
//isFooterColumnHidden is used to draw the right border for previous of last body column when the last body column is in hidden.
bool isFooterColumnHidden = false;
if (dc.ColumnIndex > columnCount - this.DataGrid.FooterColumnCount)
{
isFooterColumnHidden = GetPreviousColumnIndex(dc.ColumnIndex) < columnCount - this.DataGrid.FooterColumnCount;
}
if (this.RowType != Grid.RowType.HeaderRow)
{
if (dc.ColumnIndex == previousColumnIndex && dc.ColumnIndex != lastCellIndex)
{
dc.OnGridCellRegionChanged(GridCellRegion.BeforeFooterColumnCell);
}
else if (dc.ColumnIndex == columnCount - this.DataGrid.FooterColumnCount || isFooterColumnHidden)
{
dc.OnGridCellRegionChanged(GridCellRegion.FooterColumnCell);
}
else
{
dc.OnGridCellRegionChanged(GridCellRegion.NormalCell);
}
if (this.IsSpannedRow)
{
var coveredCellInfo = this.DataGrid.CoveredCells.GetCoveredCellInfo(dc);
if (coveredCellInfo != null && previousColumnIndex == coveredCellInfo.Right)
{
dc.OnGridCellRegionChanged(GridCellRegion.BeforeFooterColumnCell);
}
}
}
else if (dc.ColumnElement is GridHeaderCellControl)
{
if (dc.ColumnIndex == columnCount - this.DataGrid.FooterColumnCount || isFooterColumnHidden)
{
(dc.ColumnElement as GridHeaderCellControl).GridCellRegion = GridCellRegion.FooterColumnCell;
}
else if (dc.ColumnIndex == previousColumnIndex && dc.ColumnIndex != lastCellIndex)
{
(dc.ColumnElement as GridHeaderCellControl).GridCellRegion = GridCellRegion.BeforeFooterColumnCell;
}
else
{
(dc.ColumnElement as GridHeaderCellControl).GridCellRegion = GridCellRegion.NormalCell;
}
}
}
protected override void CollapseColumn(DataColumnBase column)
{
base.CollapseColumn(column);
}
internal abstract void UpdateFixedColumnState(DataColumnBase dc);
protected internal virtual double GetRowSize(DataColumnBase dataColumn, bool lineNull)
{
return(0);
}
protected virtual void CollapseColumn(DataColumnBase column)
{
column.IsEnsured = true;
column.ColumnVisibility = Visibility.Collapsed;
}