/// <summary>
/// Get the next item in the datagrid, if exists.
/// </summary>
/// <param name="rowVM"></param>
/// <returns></returns>
public IGridRowVM GetNextRow(IGridRowVM rowVM)
{
if (rowVM == null)
{
return(null);
}
IEnumerator <IGridRowVM> enumRow = _collDataRow.GetEnumerator();
enumRow.MoveNext();
// find the current one
while (enumRow.Current != null)
{
if (enumRow.Current == _selectedRow)
{
break;
}
enumRow.MoveNext();
}
// no more next
if (enumRow.Current == null)
{
return(null);
}
// now, next the next, if exist
enumRow.MoveNext();
return(enumRow.Current);
}
/// <summary>
/// refresh a cell, by the col and row.
/// (called because of a row relation: update the linked cell.
/// </summary>
/// <param name="columnVM"></param>
/// <param name="rowVM"></param>
public void RefreshCell(IGridColumnVM columnVM, IGridRowVM rowVM)
{
IGridCellVM value = this.Where(x => x.RowBinding == rowVM && x.ColumnBinding == columnVM).FirstOrDefault();
if (value == null)
{
return;
}
value.Refresh();
}
/// <summary>
/// Delete the row data model, delete also the corresponding View model.
/// Update the UI.
/// </summary>
/// <param name="row"></param>
public void DelRow(IGridRowVM row)
{
// get the next item in the datagrid, if exists
IGridRowVM selectedRowVM = _selectedRow;
// remove the VM
GridRowVM rowVM = selectedRowVM as GridRowVM;
_collDataRow.Remove(selectedRowVM);
// remove the row from the datagrid
_dynDataGrid.RemoveRow(rowVM.GridRow);
RaisePropertyChanged("CollDataRow");
// get the next one or the last, if exists
_selectedRow = GetNextOrLast(selectedRowVM);
RaisePropertyChanged("SelectedRow");
}
//=====================================================================
#region Privates methods.
/// <summary>
/// Create a mapped value of a cell, between a col and a row.
/// </summary>
/// <param name="columnBinding"></param>
/// <param name="rowBinding"></param>
/// <returns></returns>
private IGridCellVM Create(IGridColumnVM columnBinding, IGridRowVM rowBinding)
{
// find the cell in the row, by the column
IGridCell cell = rowBinding.GridRow.FindCellByColumn(columnBinding.GridColumn);
if (cell == null)
{
throw new Exception("The cell is not found in the dataGrid!");
}
// create the cellVM, can be a value or a component (button, combobox,...)
IGridCellVM mapValue = _gridFactory.CreateCellVM(cell);
mapValue.ColumnBinding = columnBinding;
mapValue.RowBinding = rowBinding;
Add(mapValue);
return(mapValue);
}
/// <summary>
/// get the next one or the last, if exists.
/// </summary>
/// <param name="rowVM"></param>
/// <returns></returns>
public IGridRowVM GetNextOrLast(IGridRowVM rowVM)
{
if (rowVM == null)
{
return(null);
}
// nom more item
if (_collDataRow.Count == 0)
{
return(null);
}
IGridRowVM nextRowVM = GetNextRow(rowVM);
if (nextRowVM != null)
{
// the last item exists, return it
return(nextRowVM);
}
// find the last one
return(_collDataRow.Last());
}
