private bool checkIECIdentifier(string value, SharedMemoryVariable shmVar)
{
if (!SharedMemoryVariableList.IsValidIECIdentifier(value))
{
MessageBox.Show("The entered name is not a valid IEC 61131 identifier.\n\nPlease enter a valid name.", "Validation Failed", MessageBoxButton.OK, MessageBoxImage.Information);
ShmVarsEditor.boolHasInvalidValue = true;
ShmVarsEditor.strNewValidValue = ShmVarsEditor.GetUniqueVarName();
shmVar.Name = ShmVarsEditor.strNewValidValue;
return(false);
}
return(true);
}
private bool checkUniqueIdentifier(string value, SharedMemoryVariable shmVar)
{
if (!SharedMemoryVariableList.IsUniqueIdentifier(value, shmVar))
{
MessageBox.Show("The entered name already exists as a shared memory variable.\n\nPlease enter a unique name.", "Validation Failed", MessageBoxButton.OK, MessageBoxImage.Information);
ShmVarsEditor.boolHasInvalidValue = true;
ShmVarsEditor.strNewValidValue = ShmVarsEditor.GetUniqueVarName();
shmVar.Name = ShmVarsEditor.strNewValidValue;
return(false);
}
return(true);
}
private void DeleteSelectedRows()
{
if (xref == null)
{
return;
}
if (ShmVarDataGrid.SelectedItems.Count > 0 && MessageBox.Show("Do you really want to delete all selected variables?", "ViGET V2.0", MessageBoxButton.YesNo, MessageBoxImage.Question) != MessageBoxResult.Yes)
{
return;
}
foreach (var item in ShmVarDataGrid.SelectedItems)
{
SharedMemoryVariable shmVar = item as SharedMemoryVariable;
if (shmVar.ConnectionCounter > 0)
{
MessageBox.Show("At least one of the selected variables can not be deleted, because it is connected.\n\nNone of the selected variables will be deleted.", "Delete Not Possible");
return;
}
}
int indexOfLastDeletedRow = -1;
//remove all selected rows(shared memory variables)
while (ShmVarDataGrid.SelectedItems.Count > 0)
{
indexOfLastDeletedRow = ShmVarDataGrid.SelectedIndex;
xref.GetSharedMemoryManager().RemoveShmVar((ShmVarDataGrid.SelectedItem as SharedMemoryVariable).Name);
}
//first set focus
ShmVarDataGrid.Focus();
//set selected either the last row or the row below last deleted row
ShmVarDataGrid.SelectedIndex = Math.Min(indexOfLastDeletedRow, ListOfShmVariables.Count - 1);
//make the selected item visible
if (ShmVarDataGrid.SelectedItem != null)
{
//then create a new cell info, with the item we wish to edit and the column number of the cell we want in edit mode
DataGridCellInfo cellInfo = new DataGridCellInfo(ShmVarDataGrid.SelectedItem, ShmVarDataGrid.Columns[0]);
//set the cell to be the active one
ShmVarDataGrid.CurrentCell = cellInfo;
//scroll the item into view
ShmVarDataGrid.ScrollIntoView(ShmVarDataGrid.SelectedItem);
}
}
