protected override void CancelCellEdit(FrameworkElement editingElement, object uneditedValue)
{
SpreadsheetCell data = editingElement.DataContext as SpreadsheetCell;
if (data != null)
{
data.Content = data.Tag.Value;
}
}
private void CheckForRecursion(SpreadsheetCell cell, DataTable dataTable, string cellNameToCheck)
{
if (cell.Tag.CellName.FullName == cellNameToCheck)
{
throw new RecursiveCellCallException("Infinity recursive loop detected!");
}
foreach (var consCellName in cell.Tag.DependentCells)
{
var consCell = dataTable.GetSpreadsheetCell(consCellName.Row, consCellName.Col);
CheckForRecursion(consCell, dataTable, cellNameToCheck);
}
}
public static SpreadsheetCell GetSpreadsheetCell(this DataTable dataTable, int rowNum, int colNum)
{
int rowsCount = dataTable.Rows.Count;
int colsCount = dataTable.Columns.Count;
// Instead of throwing IndexOutOfRange exception, just return null
if ((colNum < 0 || colNum > colsCount) || (rowNum < 0 || rowNum > rowsCount))
{
return(null);
}
SpreadsheetCell cell = dataTable.Rows[rowNum][colNum] as SpreadsheetCell;
return(cell);
}
protected override bool CommitCellEdit(FrameworkElement editingElement)
{
SpreadsheetCell data = editingElement.DataContext as SpreadsheetCell;
if (data != null)
{
data.UpdateAllDependentCells();
var formula = data.Content;
data.Tag.Calculate(formula, data.Table);
data.Content = data.Tag.Value;
data.UpdateAllConsequentialCells();
}
return(base.CommitCellEdit(editingElement));
}
protected override object PrepareCellForEdit(FrameworkElement editingElement, RoutedEventArgs editingEventArgs)
{
SpreadsheetCell data = editingElement.DataContext as SpreadsheetCell;
string uneditedText = string.Empty;
if (data != null)
{
uneditedText = data.Content;
data.Content = data.Tag.Formula == string.Empty ? uneditedText : data.Tag.Formula;
}
// move focus to text field and select all text
editingElement.MoveFocus(new TraversalRequest(FocusNavigationDirection.First));
var contentPresenter = editingElement as ContentPresenter;
var editingControl = ExtendedDataGridExtensions.GetVisualChild <TextBox>(contentPresenter);
editingControl.SelectAll();
return(uneditedText);
}
private void FillDefaultData(ExtendedDataGrid exGrid)
{
DataTable dataTable = new DataTable("DataTable" + this.NumberOfSheets);
int rowsNum = 17;
int colsNum = 13;
for (int i = 0; i < colsNum; i++)
{
dataTable.Columns.Add(new DataColumn(SSColumns.ToString(i), typeof(SpreadsheetCell)));
}
for (int i = 0; i < rowsNum; i++)
{
var row = dataTable.NewRow();
dataTable.Rows.Add(row);
for (int j = 0; j < colsNum; j++)
{
string cellName = SSColumns.ToString(j) + i;
row[j] = new SpreadsheetCell(string.Empty, dataTable, new SpreadsheetCellCustomInfo(new CellName(cellName, i, j)));
}
}
this.DataTables.Add(dataTable);
exGrid.ItemsSource = dataTable.DefaultView;
}
/// <summary>
/// Resize table by creating new and copying old values
/// </summary>
/// <param name="exGrid"></param>
/// <param name="oldDataTable"></param>
/// <param name="rowsNum"></param>
/// <param name="colsNum"></param>
private void ResizeTable(ExtendedDataGrid exGrid, DataTable oldDataTable, int rowsNum, int colsNum)
{
int boundRows = oldDataTable.Rows.Count < rowsNum ? oldDataTable.Rows.Count : rowsNum;
int boundCols = oldDataTable.Columns.Count < colsNum ? oldDataTable.Columns.Count : colsNum;
DataTable newDataTable = new DataTable(oldDataTable.TableName);
for (int i = 0; i < colsNum; i++)
{
newDataTable.Columns.Add(new DataColumn(SSColumns.ToString(i), typeof(SpreadsheetCell)));
}
for (int i = 0; i < rowsNum; i++)
{
var row = newDataTable.NewRow();
newDataTable.Rows.Add(row);
for (int j = 0; j < colsNum; j++)
{
string cellName = SSColumns.ToString(j) + i;
row[j] = new SpreadsheetCell(string.Empty, newDataTable, new SpreadsheetCellCustomInfo(new CellName(cellName, i, j)));
}
}
// copy data
for (int i = 0; i < boundRows; i++)
{
for (int j = 0; j < boundCols; j++)
{
SpreadsheetCell cell = newDataTable.GetSpreadsheetCell(i, j);
SpreadsheetCell oldCell = oldDataTable.GetSpreadsheetCell(i, j);
cell.Content = oldCell.Content;
cell.Tag = oldCell.Tag;
}
}
this.DataTables[this.CurrentSheetNumber] = newDataTable;
// VERY VERY DIRTY HACK because nulling throws exception, dunno why
try
{
exGrid.ItemsSource = null;
}
catch { }
exGrid.ItemsSource = newDataTable.DefaultView;
}
private void CheckForRecursion(SpreadsheetCell cell, DataTable dataTable, string cellNameToCheck)
{
if (cell.Tag.CellName.FullName == cellNameToCheck)
{
throw new RecursiveCellCallException("Infinity recursive loop detected!");
}
foreach (var consCellName in cell.Tag.DependentCells)
{
var consCell = dataTable.GetSpreadsheetCell(consCellName.Row, consCellName.Col);
CheckForRecursion(consCell, dataTable, cellNameToCheck);
}
}