public void MakeInsert(int where, int length)
{
if (length <= 0)
{
return;
}
var record = new UndoRedoRecord
{
OperationType = OperationType.Insert,
Where = where,
Length = length
};
_stack.Push(record);
}
public void MakeDelete(string text, int where, int length)
{
if (length <= 0)
{
return;
}
var record = new UndoRedoRecord
{
OperationType = OperationType.Delete,
Where = where,
Length = length,
Data = text.Substring(where, length)
};
_stack.Push(record);
}
public void MakeReplace(string text, int where, int length, int newLength)
{
if (length <= 0)
{
MakeInsert(where, newLength);
return;
}
if (newLength <= 0)
{
MakeDelete(text, where, length);
return;
}
var record = new UndoRedoRecord
{
OperationType = OperationType.Replace,
Where = where,
Length = newLength,
Data = text.Substring(where, length)
};
_stack.Push(record);
}
