/// <summary>
/// Sets the tag, which is connected with the given accessible element, as a current tag for the given
/// <see cref="TagTreePointer"/>
/// . An exception will be thrown, if given accessible element is not connected to any tag.
/// </summary>
/// <param name="element">an element which has a connection with some tag.</param>
/// <param name="tagPointer">
///
/// <see cref="TagTreePointer"/>
/// which will be moved to the tag connected to the given accessible element.
/// </param>
/// <returns>
/// current
/// <see cref="TagStructureContext"/>
/// instance.
/// </returns>
public virtual iText.Kernel.Pdf.Tagutils.TagStructureContext MoveTagPointerToTag(IAccessibleElement element
, TagTreePointer tagPointer)
{
PdfStructElem connectedStructElem = connectedModelToStruct.Get(element);
if (connectedStructElem == null)
{
throw new PdfException(PdfException.GivenAccessibleElementIsNotConnectedToAnyTag);
}
tagPointer.SetCurrentStructElem(connectedStructElem);
return(this);
}
private void WrapAllKidsInTag(PdfStructElem parent, PdfName wrapTagRole)
{
int kidsNum = parent.GetKids().Count;
TagTreePointer tagPointer = new TagTreePointer(document);
tagPointer.SetCurrentStructElem(parent).AddTag(0, wrapTagRole);
TagTreePointer newParentOfKids = new TagTreePointer(tagPointer);
tagPointer.MoveToParent();
for (int i = 0; i < kidsNum; ++i)
{
tagPointer.RelocateKid(1, newParentOfKids);
}
}
/// <summary>
/// Moves given
/// <see cref="TagTreePointer"/>
/// to the waiting tag which is associated with the given object.
/// If the passed object is not associated with any waiting tag,
/// <see cref="TagTreePointer"/>
/// position won't change.
/// </summary>
/// <param name="tagPointer">
/// a
/// <see cref="TagTreePointer"/>
/// which position in the tree is to be changed to the
/// waiting tag in case of the successful call.
/// </param>
/// <param name="associatedObject">
/// an object which is associated with the waiting tag to which
/// <see cref="TagTreePointer"/>
/// is to be moved.
/// </param>
/// <returns>
/// true if given object is actually associated with the waiting tag and
/// <see cref="TagTreePointer"/>
/// was moved
/// in order to point at it.
/// </returns>
public virtual bool TryMovePointerToWaitingTag(TagTreePointer tagPointer, Object associatedObject)
{
if (associatedObject == null)
{
return(false);
}
PdfStructElem waitingStructElem = associatedObjToWaitingTag.Get(associatedObject);
if (waitingStructElem != null)
{
tagPointer.SetCurrentStructElem(waitingStructElem);
return(true);
}
return(false);
}
private void RemoveOldRoot(PdfStructElem oldRoot)
{
TagTreePointer tagPointer = new TagTreePointer(document);
tagPointer.SetCurrentStructElem(oldRoot).RemoveTag();
}