//
// public methods
//
#region public PDFListNumberingStack OpenNumberingStack(string name)
/// <summary>
/// Opens an existing stack if the names match, or begins a new stack (setting it as current)
/// </summary>
/// <param name="name">The name of the stack to open. If the name is not null or empty</param>
/// <returns>The appropriate numbering stack.</returns>
/// <remarks>Named stacks are remembered throughout the lisf of the document, so they can be re-opened at any point.
/// Un-named stacks will only persist until they are completely colsed.</remarks>
public PDFListNumberingStack OpenNumberingStack(string name, ListStyle initStyle)
{
//if we have a current stack and either both names are empty, or the names match - then this is the one.
if (_currentStack != null && ((string.IsNullOrEmpty(name) && string.IsNullOrEmpty(_currentStack.Name)) || string.Equals(name, _currentStack.Name)))
{
return(_currentStack);
}
//otherwise if we do have a name, then lets chack and see if we have a reference.
else if (_listStacks.Count > 0 && !string.IsNullOrEmpty(name))
{
foreach (PDFListNumberingStack stack in _listStacks)
{
if (string.Equals(name, stack.Name))
{
_currentStack = stack;
return(stack);
}
}
}
//we don't have an existing stack so if we are not a group then we want to be pushed onto the current stack (if there is one)
PDFListNumberingStack newStack;
if (null != _currentStack && string.IsNullOrEmpty(name))
{
newStack = _currentStack;
}
else //otherwise just create one.
{
newStack = new PDFListNumberingStack(name);
//we only remember named stacks - so we can refer back to them.
if (!string.IsNullOrEmpty(name))
{
_listStacks.Add(newStack);
}
}
ListNumberingGroupStyle type = initStyle.NumberingStyle;
//TODO: Add pre, post and concat to style
string prefix = initStyle.NumberPrefix;
string postfix = initStyle.NumberPostfix;
bool concatenate = initStyle.ConcatenateWithParent;
newStack.Push(type, prefix, postfix, concatenate);
_currentStack = newStack;
return(_currentStack);
}
/// <summary>
/// Closes the current stack, so it is no longer current.
/// It is still retained in the list, so can be joined again, if the name of the stack is not empty.
/// </summary>
public void CloseNumberingStack()
{
if (null == _currentStack)
{
throw new NullReferenceException("Current numbering stack is empty");
}
//We pop the last one if there is more than one current list stack
if (_currentStack.Count > 1)
{
_currentStack.Pop();
}
else
{
_currentStack = null;
}
}
