private bool EndRowEdit(bool commitRowEdit, bool exitEditingMode)
{
if (this._editingRow == null)
{
return true;
}
DataGridDataErrorEventArgs dataError = null;
if (commitRowEdit)
{
dataError = CommitRowEdit(exitEditingMode);
if (dataError != null)
{
if (dataError.ThrowException)
{
throw dataError.Exception;
}
if (dataError.Cancel)
{
return false;
}
}
}
if (!commitRowEdit || dataError != null)
{
dataError = CancelRowEdit(exitEditingMode);
if (null != dataError)
{
if (dataError.ThrowException)
{
throw dataError.Exception;
}
if (dataError.Cancel)
{
return false;
}
}
}
if (exitEditingMode)
{
DataGridRow editingRow = this._editingRow;
if (this._editingRowLocation == DataGridEditingRowLocation.Top ||
this._editingRowLocation == DataGridEditingRowLocation.Bottom)
{
RemoveRow(this._editingRow,
this._editingRowLocation == DataGridEditingRowLocation.Top ? 0 :
this._lastDisplayedRowIndex - this._firstDisplayedRowIndex + 1);
this._editingRow = null;
this._editingRowLocation = DataGridEditingRowLocation.Inline;
}
else
{
if (this.AreRowHeadersVisible)
{
this._editingRow = null;
editingRow.HeaderCell.ApplyRowStatus(true /*animate*/);
}
else
{
this._editingRow = null;
}
editingRow.ApplyBackgroundBrush(true /*animate*/);
}
}
return true;
}
/// <summary>
/// Exits editing mode without trying to commit or revert the editing, and
/// without repopulating the edited row's cell.
/// </summary>
private void ExitEdit(bool keepFocus)
{
if (this._editingColumnIndex == -1)
{
return;
}
Debug.Assert(this._editingRow != null);
Debug.Assert(this._editingColumnIndex >= 0);
Debug.Assert(this._editingColumnIndex < this.ColumnsItemsInternal.Count);
Debug.Assert(this._editingColumnIndex == this.CurrentColumnIndex);
Debug.Assert(this.EditingRowIndex == this.CurrentRowIndex);
this._editingColumnIndex = -1;
this._editingRow.Cells[this.CurrentColumnIndex].ApplyCellState(false /*animate*/);
//
this.IsTabStop = true;
DataGridRow editingRow = this._editingRow;
if (this._editingRowLocation == DataGridEditingRowLocation.Top ||
this._editingRowLocation == DataGridEditingRowLocation.Bottom)
{
RemoveRow(this._editingRow,
this._editingRowLocation == DataGridEditingRowLocation.Top ? 0 :
this._lastDisplayedRowIndex - this._firstDisplayedRowIndex + 1);
this._editingRow = null;
this._editingRowLocation = DataGridEditingRowLocation.Inline;
}
else
{
if (this.AreRowHeadersVisible)
{
this._editingRow = null;
editingRow.HeaderCell.ApplyRowStatus(true /*animate*/);
}
else
{
this._editingRow = null;
}
editingRow.ApplyBackgroundBrush(true /*animate*/);
}
if (keepFocus)
{
bool success = Focus();
Debug.Assert(success);
}
}
public DataGrid()
{
this.TabNavigation = KeyboardNavigationMode.Once;
this.IsTabStop = true;
this.KeyDown += new KeyEventHandler(DataGrid_KeyDown);
this.KeyUp += new KeyEventHandler(DataGrid_KeyUp);
this.GotFocus += new RoutedEventHandler(DataGrid_GotFocus);
this.LostFocus += new RoutedEventHandler(DataGrid_LostFocus);
this.SetValueNoCallback(GridlinesVisibilityProperty, DataGridGridlines.All);
this._prefetchedRows = new List<DataGridRow>();
this._preparedRows = new List<DataGridRow>();
this._recyclableRows = new List<DataGridRow>();
this._editingBoundCells = new List<DataGridCell>(2);
this.SelectedItemsInternal = new DataGridSelectedItemsCollection(this);
this.ColumnsInternal = CreateColumnsInstance();
this.SetValueNoCallback(ColumnWidthProperty, DATAGRID_defaultColumnWidth);
this.DisplayData = new DataGridDisplayData();
this.SetValueNoCallback(RowHeightProperty, DATAGRID_defaultRowHeight);
this._minColumnWidth = DATAGRID_defaultMinColumnWidth;
this._minRowHeight = DataGridRow.DATAGRIDROW_minMinHeight;
this.DataConnection = new DataGridDataConnection(this);
this._editingRowLocation = DataGridEditingRowLocation.Inline;
this._newRowLocation = DataGridNewRowLocation.Inline;
this._showDetailsTable = new IndexToValueTable<Visibility>();
this.SetValueNoCallback(RowDetailsVisibilityProperty, DATAGRID_defaultRowDetailsVisibility);
this.AnchorRowIndex = -1;
this._editingColumnIndex = -1;
this._mouseOverRowIndex = null;
this.CurrentCellCoordinates = new DataGridCellCoordinates(-1, -1);
this.SetValueNoCallback(HeadersVisibilityProperty, DATAGRID_defaultHeadersVisibility);
this.SetValueNoCallback(HorizontalScrollBarVisibilityProperty, DATAGRID_defaultHorizontalScrollBarVisibility);
this.SetValueNoCallback(VerticalScrollBarVisibilityProperty, DATAGRID_defaultVerticalScrollBarVisibility);
this.SetValueNoCallback(ColumnHeadersHeightProperty, DATAGRID_defaultColumnHeadersHeight);
this.SetValueNoCallback(RowHeadersWidthProperty, DATAGRID_defaultRowHeadersWidth);
this.SetValueNoCallback(SelectionModeProperty, DATAGRID_defaultSelectionMode);
//
this.CanUserResizeColumns = DATAGRID_defaultCanUserResizeColumns;
}
